ECO Codes Table (Encyclopaedia of Chess Openings)

ECO, which stands for Encyclopaedia of Chess Openings, is a classification system for Chess openings. Each opening is given an ECO code to represent that opening and the moves of that opening.

The ECO was originally published in 1974 by a Serbian company called Chess Informant. ^[1]

Below is the ECO table containing all of the ECO codes for every Chess opening.

ECO	Opening	Notation Moves
A00	Anderssen’s Opening	1. a3
A00	Polish Gambit, Anderssen’s Opening	1. a3 a5 2. b4
A00	Creepy Crawly Formation	1. a3 e5 2. h3 d5
A00	Andersspike	1. a3 g6 2. g4
A00	Ware; Meadow Hay; Crab	1. a4
A00	Wing Gambit, Ware Opening	1. a4 b5
A00	Cologne Gambit, Ware Opening	a4 b6 d4 d5 Nc3 Nd7
A00	Ware Gambit	a4 e5 a5 d5 e3 f5 a6
A00	Polish; Orangutan; Sokolsky; Hunt	b4
A00	Birmingham Gambit, Polish	b4 c5
A00	Outflank Variation, Polish	b4 c6
A00	Schuhler Gambit, Polish	b4 c6 Bb2 a5 b5 cxb5 e4
A00	Myers Variation, Polish	b4 d5 Bb2 c6 a4
A00	Bugayev Attack, Polish	b4 e5 a3
A00	Wolferts Gambit, Polish	b4 e5 Bb2 c5
A00	Schiffler-Sokolsky; Tartakower Gambit	b4 e5 Bb2 f6 e4 Bxb4
A00	Brinckmann Variation, Polish	b4 e5 Bb2 f6 e4 Bxb4 Bc4 Nc6 f4 Qe7 f5 g6
A00	Bucker Defense, Polish	b4 Na6
A00	Grigorian Variation, Polish	b4 Nc6
A00	Polish Spike	b4 Nf6 Bb2 g6 g4
A00	Karniewski; Tubingen Variation, Polish	b4 Nh6
A00	Saragossa; Hempel’s Opening	c3
A00	Hanham; Hayward	c3 e5 Qc2
A00	Mieses; Valencia; Venezuelan Opening	d3
A00	Venezolana	d3 c5 Nc3 Nc6 g3
A00	Reversed Rat	d3 e5
A00	Spike Deferred; Myers Spike Attack	d3 g6 g4
A00	Keoni-Hiva Gambit	e3 d5 Nc3 Nf6 a3 e5 f4 exf4 Nf3
A00	Van’t Kruijs Opening	e3 e5
A00	Bouncing Bishop Variation	e3 e5 Bc4 b5 Bb3
A00	Amsterdam Attack	e3 e5 c4 d6 Nc3 Nc6 b3 Nf6
A00	Ekolu Variation	e3 e5 Nc3 d5 f4 exf4 Nf3
A00	Alua Variation	e3 e5 Nc3 Nc6 f4 exf4 Nf3
A00	Akahi Variation	e3 e5 Nc3 Nf6 f4 exf4 Nf3
A00	Barnes; Gedult-Gunderam; Walkerling	f3
A00	King’s Head Opening	f3 e5 e4
A00	Hammerschlag; Pork Chop Opening	f3 e5 Kf2
A00	Benko; Barczay; Bilek; Hungarian	g3
A00	Gambit 59	g3 d5 Bg2 e5 b4
A00	Regan Variation	g3 d5 Bg2 e5 d4
A00	Reversed Alekhine	g3 e5 Nf3
A00	Lasker Simul Special	g3 h5
A00	Grob; Ahlhausen; Colibri; Fric; Genoa; Spike	g4
A00	Grob Gambit	g4 d5 Bg2 Bxg4
A00	Romford Counter-Gambit, Grob	g4 d5 Bg2 Bxg4 c4 d4
A00	Spike, Grob	g4 d5 Bg2 c6 g5
A00	Short Spike, Grob	g4 d5 Bg2 c6 h3
A00	Zilbermints Gambit, Grob	g4 d5 e4
A00	Keene Defense, Grob	g4 d5 h3 e5
A00	Hurst Attack, Grob	g4 e5 Bg2 d5 c4
A00	Alessi Gambit, Grob	g4 f5
A00	Double Grob	g4 g5
A00	Spike Deferred	g4 g6 d3
A00	Bucker Defense, Grob	g4 Nh6
A00	Clemenz Opening	h3
A00	Kadas Opening	h4
A00	Despres Opening	h4
A00	Koola-Koola	h4 a5
A00	Wulumulu	h4 e5 d4
A00	Durkin’s Opening; Sodium Attack	Na3
A00	Dunst; Heinrichsen; Will Bull; Kotrc	Nc3
A00	St. George Defense, Dunst	Nc3 a6
A00	Novosibirsk Variation, Dunst	Nc3 c5 d4 cxd4 Qxd4 Nc6 Qh4
A00	Twyble Attack, Dunst	Nc3 c5 Rb1
A00	Dunst Gambit	Nc3 d5 e4 dxe4 d3
A00	Pseudo-Diemer Gambit, Dunst	Nc3 d5 e4 dxe4 f3 exf3 Qxf3
A00	Amazon, Dunst	Nc3 d5 e4 dxe4 Nxe4 Qd5
A00	Reversed Nimzovich	Nc3 e5
A00	Battambang, Dunst	Nc3 e5 a3
A00	Irish Attack; Polish Attack	Nc3 e5 f4
A00	Napoleon Attack, Dunst	Nc3 e5 Nf3
A00	Glasscoe Gambit, Dunst	Nc3 f5 g4
A00	Anti-Pirc Variation, Dunst	Nc3 g6 h4
A00	Tubingen Gambit, Dunst	Nc3 Nf6 g4
A00	Amar; Paris Opening	Nh3
A00	Drunken Knight Opening	Nh3
A00	Krazy Kat	Nh3 e5 f3 d5 Nf2
A01	Larsen; Queen’s Fianchetto; Nimzo-Larsen Attack A01	b3
A01	Symmetrical Variation, Larsen	b3 b6
A01	English Variation, Larsen	b3 c5
A01	Classical Variation, Larsen	b3 d5
A01	Modern Variation, Larsen	b3 e5
A01	Ringelbach Gambit, Larsen	b3 e5 Bb2 f5 e4
A01	Paschmann Gambit, Larsen	b3 e5 Bb2 Nc6 f4
A01	Dutch Variation, Larsen	b3 f5
A01	Indian Variation, Larsen	b3 Nf6
A01	Spike Variation, Larsen	b3 Nf6 Bb2 g6 g4
A10	English Opening; A10	c4
A10	Halibut Gambit, English	c4 b5
A40	Hartlaub Gambit, English	c4 b6 d4 Bb7 Nc3 e6 e4 f5 exf5 Nf6
A30	Symmetrical Defense, English; A30	c4 c5
A30	Wing Variation, English	c4 c5 b4
A34	Normal Variation, Symmetrical English; A34	c4 c5 Nc3
A35	Two Knights Variation, Symmetrical English; A35	c4 c5 Nc3 Nc6
A36	Fianchetto Variation, Symmetrical English; A36	c4 c5 Nc3 Nc6 g3
A36	Symmetrical Variation, Symmetrical English	c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7
A36	Botvinnik System Reversed, Symmetrical English	c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 e3 e5
A36	Botvinnik Variation, Symmetrical English	c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 e4
A37	Two Knights Line, Symmetrical English; A37	c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3
A38	Full Symmetry Line, Symmetrical English; A38	c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 Nf6
A38	Double Fianchetto, Symmetrical English	c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 Nf6 O-O O-O b3
A38	Duchamp Variation, Symmetrical English	c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 Nf6 O-O O-O d3
A39	Mecking Variation, Symmetrical English; A39	c4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 Nf3 Nf6 O-O O-O d4
A34	Fianchetto Variation, Symmetrical English	c4 c5 Nc3 Nf6 g3
A34	Rubinstein Variation, Symmetrical English	c4 c5 Nc3 Nf6 g3 d5 cxd5 Nxd5 Bg2 Nc7
A34	Asymmetrical Variation, English	c4 c5 Nc3 Nf6 Nf3 d5 cxd5 Nxd5
A34	Keres-Parma System, English	c4 c5 Nc3 Nf6 Nf3 e6 g3 Nc6
A34	Four Knights Variation, Symmetrical English	c4 c5 Nc3 Nf6 Nf3 Nf6
A30	Napolitano Gambit, Symmetrical English	c4 c5 Nf3 Nf6 b4
A31	Anti-Benoni Variation, Symmetrical English; A31	c4 c5 Nf3 Nf6 d4
A31	Two Knights Variation, English	c4 c5 Nf3 Nf6 d4 cxd4 Nxd4
A32	Spielmann Defense, Symmetrical English; A32	c4 c5 Nf3 Nf6 d4 cxd4 Nxd4 e6
A33	A33	c4 c5 Nf3 Nf6 d4 cxd4 Nxd4 e6 Nc3 Nc6
A33	Geller Variation, Symmetrical English	c4 c5 Nf3 Nf6 d4 cxd4 Nxd4 e6 Nc3 Nc6 g3 Qb6
A30	Hedgehog Variation, Symmetrical English	c4 c5 Nf3 Nf6 g3 b6 Bg2 Bb7 O-O e6 Nc3 Be7
A30	Double Fianchetto Defense, English	c4 c5 Nf3 Nf6 g3 b6 Bg2 Bb7 O-O g6
A11	Anglo-Slav, English; A11	c4 c6
A12	A12	c4 c6 Nf3 d5 b3
A12	Bled Variation, English	c4 c6 Nf3 d5 b3 Nf6 g3 g6
A10	Anglo Scandanavian Defense, English	c4 d5
A10	Loehn Gambit, English	c4 d5 cxd5 e6
A10	Schulz Gambit, English	c4 d5 cxd5 Nf6
A10	Malvinas Variation, English	c4 d5 cxd5 Qxd5 Nc3 Qa5
A20	King’s English; A20	c4 e5
A20	Kahiko-Hula Gambit, English	c4 e5 e3 Nf6 f4 exf4 Nf3
A20	Double Whammy, English	c4 e5 f4
A20	Drill Variation, English	c4 e5 g3 h5
A21	Reversed Sicilian, English; A21	c4 e5 Nc3
A21	Kramnik-Shirov Variation, English	c4 e5 Nc3 Bb4
A21	Troger Variation, English	c4 e5 Nc3 d6 g3 Be6 Bg2 Nc6
A21	Keres Defense, English	c4 e5 Nc3 d6 g3 c6
A21	General Variation, King’s English	c4 e5 Nc3 d6 Nf3
A21	Smyslov Variation, English	c4 e5 Nc3 d6 Nf3 Bg4
A21	Anglo-Dutch	c4 e5 Nc3 f5
A25	Reversed Closed Sicilian, English; A25	c4 e5 Nc3 Nc6
A25	Troger Variation, English	c4 e5 Nc3 Nc6 g3 g6 Bg2 Be6
A25	Taimanov Variation, English	c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7
A25	Hungarian Attack, English	c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 Rb1
A26	Closed System, King’s English; A26	c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3
A25	Closed System, Full Symmetry, King’s English	c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6
A25	Botvinnik System, King’s English	c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 e4
A25	Bremen-Hort Variation, English	c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 e3 d6 Nge2 Be6
A25	Botvinnik Variation, English	c4 e5 Nc3 Nc6 g3 g6 Bg2 Bg7 e4
A27	Three Knights System, English; A27	c4 e5 Nc3 Nc6 Nf3
A28	Four Knights Variation, English; A28	c4 e5 Nc3 Nc6 Nf3 Nf6
A28	Korchnoi Line, English	c4 e5 Nc3 Nc6 Nf3 Nf6 a3
A28	Flexible Line, English	c4 e5 Nc3 Nc6 Nf3 Nf6 d3
A28	Bradley Beach Variation, English	c4 e5 Nc3 Nc6 Nf3 Nf6 d4 e4
A28	Four Knights Variation, English	c4 e5 Nc3 Nc6 Nf3 Nf6 d4 exd4 Nxd4Bb4 Bg5 h6 Bh4 Bxc3+ bxc3 Ne5
A28	Quiet Line, English	c4 e5 Nc3 Nc6 Nf3 Nf6 e3
A28	Romanishin Variation, English	c4 e5 Nc3 Nc6 Nf3 Nf6 e3 Bb4 Qc2 Bxc3
A28	Keene; Stean Variation, English	c4 e5 Nc3 Nc6 Nf3 Nf6 e3 Bb4 Qc2 O-O Nd5 Re8 Qf5
A28	Botvinnik Line, English	c4 e5 Nc3 Nc6 Nf3 Nf6 e4
A29	Fianchetto Line, Four Knights English; A29	c4 e5 Nc3 Nc6 Nf3 Nf6 g3
A22	Two Knights Variation, English; A22	c4 e5 Nc3 Nf6
A22	Mazedonisch Variation, English	c4 e5 Nc3 Nf6 f4
A22	Bremen; Carls Variation, English	c4 e5 Nc3 Nf6 g3
A22	Kapengut; Smyslov; Modern V, English	c4 e5 Nc3 Nf6 g3 Bb4
A23	Keres Variation, English; A23	c4 e5 Nc3 Nf6 g3 c6
A23	Reversed Dragon, English	c4 e5 Nc3 Nf6 g3 d5
A24	Fianchetto Lines, Two Knights Variation, English; A24	c4 e5 Nc3 Nf6 g3 g6
A24	Prickly Pawn Pass System, English	c4 e5 Nc3 Nf6 g3 g6 Bg2 Bg7 d3 d6 e4 O-O Nge2 c6 O-O a6
A22	Bellon Gambit, English	c4 e5 Nc3 Nf6 Nf3 e4 Ng5 b5
A22	Erbenheimer Gambit, English	c4 e5 Nc3 Nf6 Nf3 e4 Ng5 Ng4
A20	Nimzovich Variation, English	c4 e5 Nf3
A20	Nimzovich-Flohr Variation, English	c4 e5 Nf3 e4
A20	English Queen	c4 e5 Qa4
A13	Agincourt; Kurajica Defense, English; A13	c4 e6
A13	English Defense	c4 e6 d4 b6
A13	King’s Knight Variation, English	c4 e6 Nf3 d5
A13	Wimpy System, English	c4 e6 Nf3 d5 b3 Nf6 Bb2 c5 e3
A13	Afincourt Variation, English	c4 e6 Nf3 d5 g3
A13	Kurajica Defense, English	c4 e6 Nf3 d5 g3 c6
A13	Neo Catalan, English	c4 e6 Nf3 d5 g3 Nf6
A14	A14	c4 e6 Nf3 d5 g3 Nf6 Bg2 Be7
A14	Neo Catalan Declined, English	c4 e6 Nf3 d5 g3 Nf6 Bg2 Be7 O-O
A14	Keres Defense, English	c4 e6 Nf3 d5 g3 Nf6 Bg2 Be7 O-O c5 cxd5 Nxd5 Nc3 Nc6
A13	Neo Catalan Accepted, English	c4 e6 Nf3 d5 g3 Nf6 Bg2 dxc4
A13	Romanishin Gambit, English	c4 e6 Nf3 Nf6 g3 a6 Bg2 b5
A10	Anglo-Dutch Defense	c4 f5
A10	Anglo-Polish Dutch	c4 f5 b4
A10	Hickmann Gambit, English	c4 f5 e4
A10	Hickmann Gambit, English	c4 f5 e4 fxe4 d3
A10	Porcupine Variation, English	c4 f5 e4 fxe4 Nc3 Nf6 g4
A10	Wade Gambit, English	c4 f5 g4
A10	English Spike	c4 f5 g4
A10	Chabanon Gambit, English	c4 f5 Nf3 d6 e4
A10	Myers Defense, English	c4 g5 d4 Bg7
A10	Zilbermints Gambit, English	c4 g5 d4 e5
A10	Great Snake, English	c4 g6
A10	Adorjan System, English	c4 g6 e4 e5
A10	Beefeater	c4 g6 Nc3 Bg7 d4 c5 d5 Bxc3 bxc3 f5
A10	Anglo-Lithuanian Variation, English	c4 Nc6
A15	Anglo System, English; A15	c4 Nf6
A15	Mikenas-Carls Variation, English	c4 Nf6
A15	English Orangutan	c4 Nf6 b4
A15	Shirazi Shove	c4 Nf6 g3 h5
A16	A16	c4 Nf6 Nc3
A16	Golombek Defense, English; Anti English	c4 Nf6 Nc3 d5
A16	Czech Variation, English	c4 Nf6 Nc3 d5 cxd5 Nxd5 g3 g6 Bg2 Nb6
A17	Smyslov Defense, English	c4 Nf6 Nc3 d5 cxd5 Nxd5 g3 g6 Bg2 Nxc3
A16	Korchnoi’s Variation, English	c4 Nf6 Nc3 d5 cxd5 Nxd5 Nf3 g6 g3 Bg7 Bg2 e5
A16	Stein Attack, English	c4 Nf6 Nc3 d5 cxd5 Nxd5 Nf3 g6 Qa4+
A17	Hegehog System, Anglo-Indian English; A17	c4 Nf6 Nc3 e6
A18	Flohr-Mikenas-Carls Variation, English; A18	c4 Nf6 Nc3 e6 e4
A19	Floh-Mikenas-Carls Variation, English; A19	c4 Nf6 Nc3 e6 e4 c5
A19	Nei Gambit, English	c4 Nf6 Nc3 e6 e4 c5 e5 Ng8
A18	Kevitz Defense, English	c4 Nf6 Nc3 e6 e4 Nc6
A18	Queen’s Indian Formation, English	c4 Nf6 Nc3 e6 Nf3 b6
A17	Nimzo-English Opening	c4 Nf6 Nc3 e6 Nf3 Bb4
A17	Zviagintsev-Krasenkov Attack, English	c4 Nf6 Nc3 e6 Nf3 Bb4 g4
A16	Anti-anti-grunfeld	c4 Nf6 Nc3 g6 Nf3 Bg7 e4
A15	King’s Knight Variation, English	c4 Nf6 Nf3
A15	Romanishin Variation, English	c4 Nf6 Nf3 e6 g3 a6
A40	Queen Pawn Opening; A40	d4
A40	St George’s Gambit	d4 a6 c4 b5 e4 e6 cxb5 axb5
A40	Polish Defense	d4 b5
A40	Spassky Gambit, Polish Defense	d4 b5 e4 Bb7 Bxb5
A40	Queen Fianchetto, Queen Pawn Game	d4 b6
A40	Eastbourne Gambit	d4 b6 c4 Bb7 Bxb5
A43	Staunton Defense; Benoni C-G; A43	d4 c5
A43	Zilbermints Gambit; Nakamura Gambit, Benoni	d4 c5 b4 cxb4
A43	Old Benoni	d4 c5 d5 d6
A43	Schmid Variation, Benoni	d4 c5 d5 d6 Nc3 g6
A44	Pawn Thrust, Benoni; A44	d4 c5 d5 e5
A44	Blockade Variation; Semi-Benoni; Russian Variation	d4 c5 d5 e5 e4 d6
A43	Franco-Benoni; Franco-Sicilian	d4 c5 d5 e6 e4
A43	Clarendon Court Variation, Benoni	d4 c5 d5 f5
A43	Benoni-Staunton Gambit	d4 c5 d5 f5 e4
A43	Snail Variation, Benoni	d4 c5 d5 Na6
A43	Benoni-Indian Defense	d4 c5 d5 Nf6
A56	Vulture Defense, Benoni	d4 c5 d5 Nf6 c4 Ne4
A43	Woozle Defense, Benoni	d4 c5 d5 Nf6 Nc3 Qa5
A43	Kingside move order, Benoni	d4 c5 d5 Nf6 Nf3
A43	Habichd; Hawk Variation, Benoni	d4 c5 d5 Nf6 Nf3 c4
A43	Hawk Variation, Benoni	d4 c5 d5 Nf6 Nf3 e4
A43	Benoni Gambit Accepted	d4 c5 dxc5
A43	Cormorant Gambit, Benoni	d4 c5 dxc5 b6
A43	Schlenker Defense, Benoni	d4 c5 dxc5 Na6
A43	Zilbermints-Benoni Gambit	d4 c5 Nf3 cxd4 b4
A43	Tamarkin Countergambit, Benoni	d4 c5 Nf3 cxd4 b4 e5
A41	Anglo-Slav Opening	d4 c6 c4 d6
D00	Queen Pawn Game; Close Opening; D00	d4 d5
D00	Sarratt Attack	d4 d5 Bf4
D00	Steinitz Countergambit, Queen Pawn Game	d4 d5 Bf4 c5
D00	Morris Gambit	d4 d5 Bf4 c5 e4
D00	Morris Counter-Gambit	d4 d5 Bf4 c5 e4 dxe4
D00	Bishop Attack; Levitsky Attack, Queen Pawn Game	d4 d5 Bg5
D00	Zot	d4 d5 Bg5
D00	Welling Variation, Queen Pawn Game	d4 d5 Bg5 Bg4
D00	Euwe Variation, Queen Pawn Game	d4 d5 Bg5 h6 Bh4 c6 Nf3 Qb6
D06	Queen’s Gambit; Aleppo Gambit; D06	d4 d5 c4
D06	Zilbermints Gambit, QGD	d4 d5 c4 b5
D06	Brieger Defense; Sahovic Defense, QGD; Baltic Defense	d4 d5 c4 Bf5
D31	Baltic Defense, QGD	d4 d5 c4 Bf5 cxd5 Bxb1 Qa4+ c6 dxc6 Nxc6
D31	Argentinian Gambit, QGD	d4 d5 c4 Bf5 cxd5 Bxb1 Qa4+ c6 dxc6 Nxc6 Rxb1 Qxd4
D06	Pseudo-Slav, QGD	d4 d5 c4 Bf5 Nc3 e6 Nf3 c6
D06	Pseudo-Chigorin, QGD	d4 d5 c4 Bf5 Nc3 e6 Nf3 Nc6
D06	Queen Attack, Baltic Defens, QGD	d4 d5 c4 Bf5 Nc3 e6 Qb3
D06	Austrian Defense; Summetrical Defense, QGD	d4 d5 c4 c5
D06	Gusev Countergambit, QGD	d4 d5 c4 c5 cxd5 Nf6
D06	Haberditz Variation, QGD	d4 d5 c4 c5 cxd5 Nf6 e4 Nxe4 dxc5 Qa5+
D06	Salvio Countergambit, QGD	d4 d5 c4 c5 dxc5 d4
D10	Slav Defense; Czech Defense, QGD; D10	d4 d5 c4 c6
D10	Exchange Variation, Slav	d4 d5 c4 c6 cxd5
D10	Slav Pawn Game	d4 d5 c4 c6 e3
D10	Diemer Gambit, Slav	d4 d5 c4 c6 e4
D10	Alekhine Attack, Slav	d4 d5 c4 c6 Nc3 dxc4 e4
D10	Winawer Counter Gambit, Slav	d4 d5 c4 c6 Nc3 e5
D10	Anti-Winawer Gambit, Slav	d4 d5 c4 c6 Nc3 e5 e4
D11	Modern Line, Slav; D11	d4 d5 c4 c6 Nf3
D11	Slav Bishop’s Game	d4 d5 c4 c6 Nf3 Bf5
D11	Bonet Gambit, Slav	d4 d5 c4 c6 Nf3 Nf6 Bg5
D13	Exchange Variation, Slav; D13	d4 d5 c4 c6 Nf3 Nf6 cxd5
D14	Symmetrical Line, Slav; D14	d4 d5 c4 c6 Nf3 Nf6 cxd5 cxd5 Nc3 Nc6 Bf4 Bf5
D14	Trifunovic Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 cxd5 cxd5 Nc3 Nc6 Bf4 Bf5 e3 e6 Qb3 Bb4
D11	Quiet Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 e3
D12	Schallopp Defense, Slav; D12	d4 d5 c4 c6 Nf3 Nf6 e3 Bf5
D12	Amsterdam Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 e3 Bf5 cxd5 cxd5 Nc3
D12	Rotterdam Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 e3 Bf5 cxd5 cxd5 Qb3
D12	Landau Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 e3 Bf5 cxd5 cxd5 Qb3 Qc8 Bd2 e6 Na3
D12	Pin Defense, Slav	d4 d5 c4 c6 Nf3 Nf6 e3 Bg4
D11	Breyer Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nbd2
D15	Three Knights Variation, Slav; D15	d4 d5 c4 c6 Nf3 Nf6 Nc3
D15	Chameleon Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 a6
D15	Advance System, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 c5
D15	Two Knights Attack, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4
D16	Alapin Variation, Slav; D16	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4
D17	Czech Defense; Open Slav Defense; D17	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5
D18	Dutch Variation, Slav; D18	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 e3
D19	Main Line, Czech Variation, Slav; D19	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 e3 e6 Bxc4 Bb4 O-O O-O Qe2
D18	Mareschall Variation, Slav; Lasker Variation	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 e3 Na6
D17	Krause Attack, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Ne5
D17	Wiesbaden Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Ne5 e6
D17	Sharp Line, Wiesbaden Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Ne5 e6 f3 Bb4 e4
D17	Fazekas Gambit, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Ne5 Na6 e4
D17	Carlsbad Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Ne5 Nbd7 Nxc4 Qc7 g3 e5
D17	Baarn Variation, Slav; Bled Attack	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bf5 Nh4
D16	Steiner Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Bg4
D16	Soultanbeieff Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 e6
D16	Smyslov Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 a4 Na6
D15	Alekhine Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 e3
D15	Alekhine Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 e3 b5 a4 b4
D15	Geller Variation; Geller-Tolush Var, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 dxc4 e4
D15	Schlechter Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 g6
D15	Suchting Variation, Slav	d4 d5 c4 c6 Nf3 Nf6 Nc3 Qb6
D20	Queen’s Gambit Accepted; D20	d4 d5 c4 dxc4
D20	Old Variation, QGA	d4 d5 c4 dxc4 e3
D20	Korchnoi Gambit, QGA	d4 d5 c4 dxc4 e3 e5 Bc4 exd4 Qb3 Qe7 Kf1
D20	Novikov Gambit, QGA	d4 d5 c4 dxc4 e3 e5 Bc4 exd4 Qb3 Qe7 Nd2
D20	Christensen Gambit, QGA	d4 d5 c4 dxc4 e3 e5 Bc4 exd4 Qb3 Qe7 Nf3
D20	Saduleto Variation, QGA; Central Variation, QGA	d4 d5 c4 dxc4 e4
D20	Greco Variation, QGA	d4 d5 c4 dxc4 e4 b5
D20	Rubinstein Variation, QGA	d4 d5 c4 dxc4 e4 c5
D20	Yefimov Gambit, QGA	d4 d5 c4 dxc4 e4 c5 d5 b5
D20	Linares Variation, QGA	d4 d5 c4 dxc4 e4 c5 d5 Nf6 Nc3 b5
D20	McDonnell Defense, QGA	d4 d5 c4 dxc4 e4 e5
D20	Somov Gambit, QGA	d4 d5 c4 dxc4 e4 e5 Bxc4
D01	Betbeder; Veresov; Levitzky; Parisian	d4 d5 c4 dxc4 e4 f5
D20	Versov; Betbeder; Schwartz Defense, QGA	d4 d5 c4 dxc4 e4 f5
D20	Modern Defense, QGA	d4 d5 c4 dxc4 e4 Nc6
D20	Alekhine System, QGA	d4 d5 c4 dxc4 e4 Nf6
D20	Gunsberg Defense; Prianishenmo Gambit, QGA	d4 d5 c4 dxc4 Nc3 c5 d5 Nf6 Nc3 e6 e4 exd5 e5
D21	Blackburne’s Move, QGA; Normal Variation, QGA; D21	d4 d5 c4 dxc4 Nf3
D21	Alekhine Variation, QGA	d4 d5 c4 dxc4 Nf3 a6
D22	D22	d4 d5 c4 dxc4 Nf3 a6 e3
D22	Haberditz Variation, QGA	d4 d5 c4 dxc4 Nf3 a6 e3 b5
D22	Alekhine Variation, QGA	d4 d5 c4 dxc4 Nf3 a6 e3 Bg4
D22	Borisenko-Furman Variation, QGA	d4 d5 c4 dxc4 Nf3 a6 e4
D21	Slav Gambit, QGA	d4 d5 c4 dxc4 Nf3 b5
D21	Gunsberg Defense, QGA	d4 d5 c4 dxc4 Nf3 c5
D21	Prianishenmo Gambit, QGA	d4 d5 c4 dxc4 Nf3 c5 d5 Nf6 Nc3 e6 e4 exd5 e5
D21	Rosenthal Variation, QGA	d4 d5 c4 dxc4 Nf3 e6
D21	Godes Variation, QGA	d4 d5 c4 dxc4 Nf3 Nd7
D23	D23	d4 d5 c4 dxc4 Nf3 Nf6
D25	D25	d4 d5 c4 dxc4 Nf3 Nf6 e3
D25	Flohr; Winawer Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 Be6
D25	Larsen; Janowski; Modern Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 Bg4
D26	Traditional System QGA; D26	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6
D26	Classical Defense, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5
D27	Rubinstein Variation, QGA; D27	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6
D27	Furman Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 dxc5 Bxc5
D27	Russian Gambit, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 e4
D28	Alekhine System, Classical Defense, QGA; D28	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2
D28	Accelerated Fianchetto, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 b5
D29	D29	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 b5 Bb3 Bb7
D29	Smyslov Variation, Classical Defense, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 b5 Bb3 Bb7 Rd1 Nbd7 Nc3 Bd6
D28	Counter Fianchetto Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 Nc6 dxc5
D28	Four Knights Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O a6 Qe2 Nc6 Nc3
D26	Steinitz Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O cxd4
D26	Development Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 e6 Bxc4 c5 O-O Nc6
D25	Smyslov Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 e3 g6
D24	Showalter Variation, QGA; D24	d4 d5 c4 dxc4 Nf3 Nf6 Nc3
D24	Bogoljubow Defense, QGA	d4 d5 c4 dxc4 Nf3 Nf6 Nc3 a6 e4
D23	Mannheim Variation, QGA	d4 d5 c4 dxc4 Nf3 Nf6 Qa4+
D08	Albin Countergambit; Cavalotti Var, QGD; D08	d4 d5 c4 e5
D08	Lasker Trap, QGD	d4 d5 c4 e5 dxe5 d4 e3 Bb4+ Bd2 dxe3
D08	Normal Line, Albin Countergambit, QGD	d4 d5 c4 e5 dxe5 d4 Nf3
D08	Tartakower Defense, QGD	d4 d5 c4 e5 dxe5 d4 Nf3 c5
D09	Fianchetto Variation, Albin Countergambit; D09	d4 d5 c4 e5 dxe5 d4 Nf3 Nc6 g3
D08	Alapin Variation, QGD	d4 d5 c4 e5 dxe5 d4 Nf3 Nc6 Nbd2
D30	D30	d4 d5 c4 e6
D31	Queen’s Knight Variation, QGD; D31	d4 d5 c4 e6 Nc3
D31	Janowski Variation, QGD	d4 d5 c4 e6 Nc3 a6
D31	Alapin Variation, QGD	d4 d5 c4 e6 Nc3 b6
D31	Alatortsev; Petrosian, Charousek Var, QGD	d4 d5 c4 e6 Nc3 Be7
D31	Miladinovic Gambit, QGD	d4 d5 c4 e6 Nc3 Be7 e4 dxe4 f3
D32	Tarrasch Defense, QGD; D32	d4 d5 c4 e6 Nc3 c5
D32	Schara-Hennig; Duisburg Gambit, QGD	d4 d5 c4 e6 Nc3 c5 cxd5 cxd4
D32	Von Hennig Gambit, QGD	d4 d5 c4 e6 Nc3 c5 cxd5 cxd4 Qxd4 Nc6 Qd1 exd5 Qxd5 Be6
D32	Tarrasch Gambit, QGD	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 dxc5 d4 Na4 b5
D32	Marshall Gambit, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 e4
D32	Two Knights Variation, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3
D32	Grunfeld Gambit, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 dxc5 d4 Na4 b5
D33	Lodz; Schlecter; Rubinstein Var, QGD; D33	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3
D33	Folkestone; Swedish Var, QGD	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 c4
D33	Prague Variation, QGD	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6
D34	D34	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7
D34	Rubinstein; Normal Position, QGD	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O
D34	Carlsbad Variation, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O Bg5
D34	Endgame Variation, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O Bg5 Be6
D34	Bogoljubow Variation, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O Bg5 Be6 Rc1 c4
D34	Advance Variation, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O Bg5 c4
D34	Spassky Variation, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O Bg5 cxd4 Nxd4
D34	Reti Variation, QGD	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O dxc5 Bxc5 Na4
D34	Classical Tarrasch Gambit	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Be7 O-O O-O dxc5 d4
D33	Wagner Variation, Tarrasch	d4 d5 c4 e6 Nc3 c5 cxd5 exd5 Nf3 Nc6 g3 Nf6 Bg2 Bg4
D32	Symmetrical Variation, Tarrasch	d4 d5 c4 e6 Nc3 c5 e3 Nf6 Nf3 Nc6
D31	Semi-Slav Defense	d4 d5 c4 e6 Nc3 c6
A84	Slav Stonewall, Dutch	d4 d5 c4 e6 Nc3 c6 e3 f5
D31	Portisch Gambit, Semi-Slav	d4 d5 c4 e6 Nc3 c6 e3 f5 g4
D31	Marshall Gambit, Semi-Slav	d4 d5 c4 e6 Nc3 c6 e4
D31	Gunderam Gambit, Semi-Slav	d4 d5 c4 e6 Nc3 c6 e4 dxe4 f3
D31	Tolush Variation, Semi-Slav	d4 d5 c4 e6 Nc3 c6 e4 dxe4 Nxe4 Bb4+ Bd2 Qxd4 Bxb4 Qxe4+Be2 c5 Bxc5 Qxg2
D31	Noteboom Variation, Semi-Slav	d4 d5 c4 e6 Nc3 c6 Nf3 dxc4
D31	Abrahams; Noteboom; Klaus Junge Var, QGD	d4 d5 c4 e6 Nc3 c6 Nf3 dxc4 a4 Bb4 e3 b5 Bd2 a5
D31	Anti-Noteboom Variation, Semi-Slav	d4 d5 c4 e6 Nc3 c6 Nf3 dxc4 Bg5
D31	Beliavsky Line, Semi-Slav	d4 d5 c4 e6 Nc3 c6 Nf3 dxc4 Bg5 f6
D35	D35	d4 d5 c4 e6 Nc3 Nf6
D35	Harrwitz; Rubinstein Var, QGD	d4 d5 c4 e6 Nc3 Nf6 Bf4
D50	Modern Variation, QGD; D50	d4 d5 c4 e6 Nc3 Nf6 Bg5
D53	D53	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7
D53	Heral Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 Bxf6
D53	Lasker Defense, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 Ne4
D55	D55	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3
D55	Pillsbury Attack, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 b6 Bd3 Bb7 cxd5 exd5 Ne5
D55	Neo Orthodox Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6
D56	D56	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4
D58	Tartakower Variation, QGD; D58	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 b6
D59	Exchange Variation, Tartakower Defense, QGD; D59	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 b6 cxd5 Nxd5
D56	Lasker Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 Bxe7 Qxe7
D57	D57	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 Bxe7 Qxe7 cxd5
D57	Bernstein Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 Bxe7 Qxe7 cxd5 Nxc3 bxc3
D56	Teichmann Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bh4 Ne4 Bxe7 Qxe7 Qc2
D55	Anti-Tartakower Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bxf6
D55	Petrosian Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 h6 Bxf6 Bxf6 Rc1 c6 Bd3 Nd7 O-O dxc4
D60	Orthodox Variation, QGD; D60	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7
D60	Botvinnik Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Bd3
D60	Rauzer Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Qb3
D61	Rubinstein Variation, Orthodox Defense, QGD; D61	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Qc2
D62	D62	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Qc2 c5 cxd5
D63	D63	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1
D63	Henneberger; Swiss Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 a6
D63	Capablanca Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 b6 cxd5 exd5 Bb5
D63	Pillsbury Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 b6 cxd5 exd5 Bd3
D63	Rubinstein Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6
D66	D66	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3
D66	Fianchetto Variation, Orthodox Defense, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 b5
D67	Capablanca Freeing Maneuver, QGD; D67	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5
D67	Alekhine Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 Ne4
D67	Classical Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 O-O Nxc3 1Rxc3
D68	D68	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 O-O Nxc3 1Rxc3 e5
D69	D69	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 Bxe7 Qxe7 O-O Nxc3 1Rxc3 e5 1dxe5
D64	Janowski Variation, Orthodox Defense, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Bd3 dxc4 Bxc4 Nd5 h4
D64	Rubinstein Attack, Orthodox Defense, QGD; D64	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Qc2
D65	D65	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Nf3 Nbd7 Rc1 c6 Qc2 a6 cxd5
D54	Neo-Orthodox Variation, QGD; D54	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 e3 O-O Rc1
D50	Uhlmann Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Be7 Nf3 h6 Bh4 O-O Rc1 dxc4
D50	Been & Koomen; Dutch & Peruvian	d4 d5 c4 e6 Nc3 Nf6 Bg5 c5
D50	Pseudo-Tarrasch Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 c5 cxd5
D50	Canal; Venice Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 c5 cxd5 Qb6
D50	Primitive Pillsbury Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 c5 Nf3 cxd4 Qxd4
D51	Knight Defense, QGD; D51	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7
D51	Manhattan; Westphalia Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 Bb4
D51	Westphalian Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 Bb4 Nf3 c5
D52	D52	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3
D52	Cambridge Springs; Pillsbury Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5
D52	Bogoljubov Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 Nd2 Bb4 Qc2
D52	Argentine Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 e3 c6 Nf3 Qa5 Nd2 Bb4 Qc2 O-O Bh4
D51	Alekhine Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 Nf3 c6 e4
D51	Alekhine Gambit, QGD	d4 d5 c4 e6 Nc3 Nf6 Bg5 Nbd7 Nf3 h6 Bh4 dxc4
D35	Exchange Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 cxd5
D35	Positional Variation, Exchange Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 cxd5 exd5 Bg5
D36	Reshevsky Variation, QGD; D36	d4 d5 c4 e6 Nc3 Nf6 cxd5 exd5 Bg5 c6 Qc2
D35	Saemisch Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 cxd5 exd5 Nf3 Nbd7 Bf4
D37	Three Knights Variation, QGD; D37	d4 d5 c4 e6 Nc3 Nf6 Nf3
D38	Ragozin Variation, QGD; D38	d4 d5 c4 e6 Nc3 Nf6 Nf3 Bb4
D39	Vienna Variation, QGD; D39	d4 d5 c4 e6 Nc3 Nf6 Nf3 Bb4 Bg5 dxc4
D38	Alekhine Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 Bb4 Qa4
D37	Harrwitz Attack, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 Be7 Bf4
D40	Semi-Tarrasch Variation, QGD; D40	d4 d5 c4 e6 Nc3 Nf6 Nf3 c5
D40	Pillsbury Variation, Semi-Tarrasch	d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 Bg5
D41	D41	d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 cxd5
D42	D42	d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 cxd5 Nxd5 e3 Nc6 Bd3
D41	San Sebastian Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c5 cxd5 Nxd5 e4 Nxc3 bxc3 cxd4 cxd4 Bb4+ Bd2 Bxd2+
D43	D43	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6
D43	Anti-Meran Gambit, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5
D44	Semi-Slav Defense Accepted; D44	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4
D44	Botvinnik Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5
D44	Ekstrom Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5 e5 h6 Bh4 g5 exf6 gxh4 Ne5
D44	Lilienthal Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5 e5 h6 Bh4 g5 Nxg5 hxg5 Bxg5 Nbd7
D44	Alatortsev System, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 dxc4 e4 b5 e5 h6 Bh4 g5 Nxg5 Nd5
D44	Anti-Moscow Gambit	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 Bg5 h6 Bh4
D45	D45	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3
D45	Acclerated Meran, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 a6
D45	Normal Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7
D46	D46	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3
D46	Romi Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 Bb4
D46	Chigorin Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 Bd6
D46	Bogoljubow Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 Be7
D47	Meran Variation, QGD; D47	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4
D48	Reynolds Variation, QGD; D48	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6
D48	Pirc Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 b4
D48	Old Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5
D49	Blumenfeld Variation, QGD; D49	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5
D49	Sozin Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5 Nxe5
D49	Stahlberg Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 c5 e5 cxd4 Nxb5 Nxe5 1Nxe5 axb5
D48	Reynolds Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 e4 d5
D48	Old Meran Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 a6 O-O
D47	Lundin; Neo-Meran	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 b4
D47	Wade Variation, QGD	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 Bb7
D47	Larsen Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Bd3 dxc4 Bxc4 b5 Bd3 Bb7 e4 b4 Na4 c5
D45	Rubinstein; anti-Meran	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Ne5
D45	Stoltz Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Qc2
D45	Center Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Qc2 Bd6 e4
D45	Mikhalchishin Line, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Qc2 Bd6 e4 dxe4 Nxe4 Nxe4 Qxe4 e5 dxe5
D45	Shabalov Attack, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Nbd7 Qc2 Bd6 g4
D44	Stonewall Defense, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 c6 e3 Ne4 Bd3 f5
D44	Vienna Variation, Semi-Slav	d4 d5 c4 e6 Nc3 Nf6 Nf3 dxc4
D30	Pseudo-Tarrasch, QGD	d4 d5 c4 e6 Nf3 c5
D30	Bishop Attack, Tarrasch	d4 d5 c4 e6 Nf3 c5 cxd5 exd5 Bg5
D30	Anti-Noteboom Gambit, Semi-Slav	d4 d5 c4 e6 Nf3 c6 Nc3 dxc4 g3
D30	Traditional Variation, QGD	d4 d5 c4 e6 Nf3 Nf6 Bg5
D30	Vienna Variation, QGD	d4 d5 c4 e6 Nf3 Nf6 Bg5 Bb4+
D30	Duras Variation, QGD; Capablanca Variation	d4 d5 c4 e6 Nf3 Nf6 Bg5 h6
D30	Hastings Variation, QGD	d4 d5 c4 e6 Nf3 Nf6 Bg5 h6 Bxf6 Qxf6 Nc3 c6 Qb3
D30	Capablanca Variation, QGD	d4 d5 c4 e6 Nf3 Nf6 Bg5 Nbd7 e3 c6 Nbd2
D30	Pseudo-Meran; Semi-Slav, QGD	d4 d5 c4 e6 Nf3 Nf6 e3 c6
D30	Quiet Variation, Semi-Slav	d4 d5 c4 e6 Nf3 Nf6 e3 c6 Nbd2
D30	Semmering Variation, Semi-Slav	d4 d5 c4 e6 Nf3 Nf6 e3 c6 Nbd2 Nbd7 Bd3 c5
D06	Alekhine Defense, QGD	d4 d5 c4 g6
D07	Chigorin Defense, QGD; D07	d4 d5 c4 Nc6
D07	Exchange Variation, Chigorin Defense	d4 d5 c4 Nc6 cxd5 Qxd5
D07	Costa’s Line	d4 d5 c4 Nc6 cxd5 Qxd5 e3 e5 Nc3 Bb4 Bd2 Bxc3 Bxc3 exd4 Ne2
D07	Janowski Variation, QGD	d4 d5 c4 Nc6 Nc3 dxc4 Nf3
D06	Tartakower Gambit, QGD	d4 d5 c4 Nc6 Nc3 e5
D06	Modern Gambit, Chigorin Defense	d4 d5 c4 Nc6 Nc3 Nf6 Nf3 dxc4
D06	Alekhine Variation, Chigorin Defense	d4 d5 c4 Nc6 Nf3 Bg4 Qa4
D06	Lazard Gambit, Chigorin Defense	d4 d5 c4 Nc6 Nf3 e5
D06	Marshall Defense; Knight Defense, QGD	d4 d5 c4 Nf6
D06	Cocquio Counter Gambit, QGD; Tan Gambit	d4 d5 c4 Nf6 cxd5 c6
D00	Stonewall Attack, Queen Pawn Game	d4 d5 e3 Nf6 Bd3
D00	Stonewall Attack	d4 d5 e3 Nf6 Bd3 c5 c3
D00	Blackmar-Diemer Gambit	d4 d5 e4
D00	Fritz Gambit, BDG	d4 d5 e4 dxe4 Bc4
D00	Diemer-Rosenberg Attack, BDG	d4 d5 e4 dxe4 Be3
D00	Blackmar Gambit; Gedult Gambit	d4 d5 e4 dxe4 f3
D00	Pohlmann Variation, BDG	d4 d5 e4 dxe4 f3 f5
D00	Mieses; Nimzovich Var, BDG	d4 d5 e4 dxe4 f3 Nc6
D00	Polish Gambit, BDG	d4 d5 e4 dxe4 Nc3
D00	Grosshans Defense, BDG	d4 d5 e4 dxe4 Nc3 Bd7
D00	Zeller Defesne, BDG	d4 d5 e4 dxe4 Nc3 Bf5
D00	Zeller Defesne, BDG	d4 d5 e4 dxe4 Nc3 Bf5 f3 exf3 Qxf3 Bc8
D00	Soller Attack, BDG	d4 d5 e4 dxe4 Nc3 Bf5 f3 Nf6 Bc4
D00	Dries Counter-Attack, BDG	d4 d5 e4 dxe4 Nc3 c5
D00	Lemberger Counter-Gambit, BDG	d4 d5 e4 dxe4 Nc3 e5
D00	Soller; Lemberger Var, BDG; Diemer Attack	d4 d5 e4 dxe4 Nc3 e5 Be3
D00	Endgame Variation, BDG	d4 d5 e4 dxe4 Nc3 e5 dxe5
D00	Rasmussen Attack, BDG	d4 d5 e4 dxe4 Nc3 e5 Nge2
D00	Lange Gambit; Alfred Lange Gambit; Simple Variation	d4 d5 e4 dxe4 Nc3 e5 Nxe4
D00	Sneiders Attack, BDG	d4 d5 e4 dxe4 Nc3 e5 Qh5
D00	Rasa-Studier Variation, BDG	d4 d5 e4 dxe4 Nc3 e6 Be3
D00	Giertz-Peters Gambit, BDG	d4 d5 e4 dxe4 Nc3 e6 f3
D00	Polish Attack, BDG	d4 d5 e4 dxe4 Nc3 e6 f3 Bf5 Bg5
D00	Netherlands Variation, BDG	d4 d5 e4 dxe4 Nc3 f5
D00	Mieses; Nimzovich Var, BDG	d4 d5 e4 dxe4 Nc3 Nc6
D00	Vienna Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6
D00	Studier-Rasa Gambit, BDG	d4 d5 e4 dxe4 Nc3 Nf6 Be3
D00	Von Popiel Gambit	d4 d5 e4 dxe4 Nc3 Nf6 Bg5
D00	Zilbermints Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 Bg5 Bf5 Bxf6 exf6 g4 Bg6 Qe2 Bb4 Qb5+
D00	Blackmar-Diemer Gambit	d4 d5 e4 dxe4 Nc3 Nf6 f3
D00	Wiesengren Defense, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 Bc5
D00	Hans Mullers; Vienna V	d4 d5 e4 dxe4 Nc3 Nf6 f3 Bf5
D00	Soller; Vienna Var, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 Bf5 Bc4
D00	Tejler Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 Bf5 Bf4
D00	Sperling Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 Bf5 d5
D00	Diemer Gambit, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 Bf5 fxe4
D00	Kampars Gambit, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 Bf5 g4 Bg6 g5 Nd5 fxe4
D00	Gunderam Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 Bf5 g4 Bg6 h4
D00	Brombacher; Daberitz Var, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 c5
D00	O’Kelly Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 c6
D00	Langeheinecke Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 e3
D00	Elbert Counter-Gambit, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 e5
D00	Weinsbach Declination, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 e6
D00	Pfrang Gambit, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 e6 fxe4 Bb4 Bd3 Bxc3+ bxc3 Nxe4 Be3
D00	Ritter Defense, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 b6
D00	Gunderam; Tartakower Var, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 Bf5
D00	Teichmann Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 Bg4
D00	Kaulich Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 c5
D00	Ziegler; Gunderam’s 2nd Defense, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 c6
D00	Euwe Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 e6
D00	Zilbermints Gambit, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 e6 Bg5 Be7 Bd3 Nc6 O-O Nxd4 Kh1
D00	Duthilleuk Gambit, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 e6 Bd3 Nc6 Bg5 Be7 Ne4
D00	Bogoljubow Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 g6
D00	Mad Dog Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 g6 Bc4 Bg7 h4
D00	Nimzovich Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 g6 Bc4 Bg7 Ne5
D00	Kloss Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 g6 Bc4 Bg7 O-O O-O Kh1
D00	Studier Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 g6 Bc4 Bg7 O-O O-O Qe1
D00	Diemer Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 g6 Bf4
D00	Peters Attack, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 g6 Ne5
D00	Gunderam Defense, BDG; Rook Pawn Defense	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 h5
D00	Schuttler Defense, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 Nbd7
D00	Pietrowsky Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Nxf3 Nc6
D00	Ryder Variation, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Qxf3
D00	Tautvaisis Defense, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Qxf3 Nc6
D00	Tejler Gambit, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 exf3 Qxf3 Qxd4 Be3 Qg4 Qf2 Ne4 Nxe4 Qxe4 O-O-O Nc6 Bd3
D00	Albrecht; Karlshruhle Defense, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 g6
D00	Lamb Defense, BDG	d4 d5 e4 dxe4 Nc3 Nf6 f3 Nc6
D00	Mason Attack, Queen Pawn Game	d4 d5 f4
D00	Zurich Gambit	d4 d5 g4
D00	Chigorin; Ponziani; Veresov	d4 d5 Nc3
D00	Alburt Defense, QP	d4 d5 Nc3 Bf5
D00	Anti-Veresov	d4 d5 Nc3 Bg4
D00	Irish Gambit, QP	d4 d5 Nc3 c5
D00	Shaviliuk Gambit, QP	d4 d5 Nc3 e5
D00	Dutch System, QP	d4 d5 Nc3 f5
D00	Fianchetto Defense, QP	d4 d5 Nc3 g6 Nf3 Bg7
D00	Shropshire Defense	d4 d5 Nc3 h5
D01	Richter-Veresov Opening; D01	d4 d5 Nc3 Nf6 Bg5
D01	Veresov Variation, QP	d4 d5 Nc3 Nf6 Bg5 Bf5 Bxf6
D01	Richter Variation, Veresov	d4 d5 Nc3 Nf6 Bg5 Bf5 f3
D01	Classical Defense, Veresov	d4 d5 Nc3 Nf6 Bg5 e6 Nf3
D01	Two Knights System, Veresov	d4 d5 Nc3 Nf6 Bg5 Nbd7 Nf3
D01	Grunfeld Defense, Veresov	d4 d5 Nc3 Nf6 Bg5 Nbd7 Nf3 g6
D01	Boyce Defense, Veresov	d4 d5 Nc3 Nf6 Bg5 Ne4
D00	Hubsch Gambit	d4 d5 Nc3 Nf6 e4 Nxe4
D02	Zukertort Variation, QP; D02	d4 d5 Nf3
D02	Anti-Torre, QP	d4 d5 Nf3 Bg4
D02	Anti-Torre	d4 d5 Nf3 Bg4 Ne5 Bf5 g4
D02	Queen’s Gambit Reversed; Krause Variation	d4 d5 Nf3 c5
D02	Chandler Gambit, QP	d4 d5 Nf3 c5 g3 cxd4 Bg2
D02	Chigorin Variation, QP	d4 d5 Nf3 Nc6
D02	Symmetrical Variation, QP	d4 d5 Nf3 Nf6
D02	London System; Queen’s Bishop Opening	d4 d5 Nf3 Nf6 Bf4
D02	Poisoned Pawn Variation, QP	d4 d5 Nf3 Nf6 Bf4 c5 e3 Qb6 Nc3
D03	Torre Attack, QP; D03	d4 d5 Nf3 Nf6 Bg5
D03	Breyer Variation, QP	d4 d5 Nf3 Nf6 Bg5 e6 e3 c5 c3 Qb6
D03	Grunfeld Variation, QP	d4 d5 Nf3 Nf6 Bg5 g6
D03	Gossip Variation, QP	d4 d5 Nf3 Nf6 Bg5 Ne4
D02	Zilbermints Variation, QP	d4 d5 Nf3 Nf6 c4 b5
D25	Queen’s Gambit Accepted Deferred	d4 d5 Nf3 Nf6 c4 dxc4
D04	Colle System; D04	d4 d5 Nf3 Nf6 e3
D04	Bishop Defense, QP; Anti-Colle	d4 d5 Nf3 Nf6 e3 Bf5
D05	Classical Defense, Colle System; D05	d4 d5 Nf3 Nf6 e3 e6
D05	Zukertort Variation, QP	d4 d5 Nf3 Nf6 e3 e6 Bd3
D05	Rubinstein Attack, Colle	d4 d5 Nf3 Nf6 e3 e6 Bd3 c5 b3
D02	Pseudo-Catalan	d4 d5 Nf3 Nf6 g3
D00	Amazon Attack	d4 d5 Qd3
D00	Siberian Attack	d4 d5 Qd3 Nc6 Nc3
A41	Pillsbury Defense; A41; Rat Defense	d4 d6
A42	A42	d4 d6 c4
A42	English Rat	d4 d6 c4 e5
A42	Lisbon Gambit	d4 d6 c4 e5 dxe5 Nc6
A41	Wade Defense	d4 d6 Nf3 Bg4
A40	Charlick Gambit; Englund Gambit	d4 e5
A40	Englund Gambit Declined	d4 e5 d5
A40	Diemer Counterattack	d4 e5 d5 Bc5 e4 Qh4
A40	Thuring Gambit; Hartlaub-Charlick Gambit	d4 e5 dxe5 d6
A40	Soller; Purchas Gambit	d4 e5 dxe5 f6
A40	Englund; Behting Gambit	d4 e5 dxe5 Nc6
A40	Felbecker Gambit	d4 e5 dxe5 Nc6 Nf3 Bc5
A40	Soller Gambit Deferred	d4 e5 dxe5 Nc6 Nf3 f6
A40	Zilbermints Gambit II, Englund Gambit	d4 e5 dxe5 Nc6 Nf3 h6
A40	Zilbermints Gambit, Englund Gambit	d4 e5 dxe5 Nc6 Nf3 Nge7
A40	Englund Gambit	d4 e5 dxe5 Nc6 Nf3 Qe7
A40	Stockhom Variation, Englund Gambit	d4 e5 dxe5 Nc6 Nf3 Qe7 Qd5
A40	Mosquito Gambit, Englund	d4 e5 dxe5 Qh4
A40	Horwitz Defense	d4 e6
A40	Franco-Indian Defense	d4 e6
A40	Seneschaud Variation, Dutch	d4 e6 Bf4 f5 g4
A40	English Defense	d4 e6 c4 b6
A40	Perrin Variation	d4 e6 c4 b6 e4 Bb7 Bd3 Nc6
A40	Poli Gambit	d4 e6 c4 b6 e4 Bb7 f3 f5 exf5 Nh6
A40	Hartlaub Gambit Declined	d4 e6 c4 b6 Nc3 Bb7 e4 f5 d5
A40	Hartlaub Gambit Accepted	d4 e6 c4 b6 Nc3 Bb7 e4 f5 exf5 Nf6
A40	Keres Defense, Indian; Kangaroo Defense	d4 e6 c4 Bb4+
A40	Transpositional Variation, Keres Defense	d4 e6 c4 Bb4+ Nc3
C00	Franco-Sicilian Defense	d4 e6 c4 c5
A43	Franco-Sicilian Hybrid	d4 e6 c4 c5 d5 exd5 cxd5 d6 Nc3 g6 e4 Bg7 Nf3 Ne7
A40	Zilbermints Gambit	d4 e6 c4 e5
A84	Bellon Gambit	d4 e6 c4 f5 e4
A80	Dutch Defense; A80	d4 f5
A80	Seneschaud Gambit, Dutch	d4 f5 Bf4 e6 g4
A80	Hopton Attack, Dutch	d4 f5 Bg5
A84	A84	d4 f5 c4
A84	Classical Variation, Dutch	d4 f5 c4 e6
A84	Bellon Gambit, Dutch	d4 f5 c4 e6 e4
A84	Rubinstein Variation, Dutch	d4 f5 c4 e6 Nc3
A84	Stonewall Variation, Dutch	d4 f5 c4 e6 Nc3 Nf6 g3 c6 Bg2 d5 O-O Bd6
A85		d4 f5 c4 g6 Nc3
A85	Bladel Variation, Dutch	d4 f5 c4 g6 Nc3 Nh6
A85	Normal Variation, Dutch	d4 f5 c4 Nf6
A86	Fianchetto Variation, Dutch; A86	d4 f5 c4 Nf6 g3
A90	A90	d4 f5 c4 Nf6 g3 e6
A90	Classical Variation, Dutch	d4 f5 c4 Nf6 g3 e6 Bg2
A90	Nimzo-Dutch Variation	d4 f5 c4 Nf6 g3 e6 Bg2 Bb4+
A91	A91	d4 f5 c4 Nf6 g3 e6 Bg2 Be7
A91	Botvinnik-Bronstein Variation, Dutch	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nc3 O-O e3
A92	A92	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3
A93	Botvinnik Variation, Dutch; A93	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 b3
A94	A94	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 b3 c6
A95	A95	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d5 Nc3
A96	A96	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6
A97	Ilyin-Zhenevsky Variation, Dutch; A97	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6 Nc3 Qe8
A99	A99	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6 Nc3 Qe8 b3
A98	A98	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O d6 Nc3 Qe8 Qc2
A92	Alekhine Variation, Dutch	d4 f5 c4 Nf6 g3 e6 Bg2 Be7 Nf3 O-O O-O Ne4
A91	Blackburne Attack, Dutch	d4 f5 c4 Nf6 g3 e6 Bg2 Bg7 Nh3
A86	Leningrad Variation, Dutch	d4 f5 c4 Nf6 g3 g6
A87	A87	d4 f5 c4 Nf6 g3 g6 Bg2 Bg7 Nf3
A87	Fluid Formation, Dutch	d4 f5 c4 Nf6 g3 g6 Bg2 Bg7 Nf3 O-O O-O d6
A88	Warsaw Variation, Dutch; A88	d4 f5 c4 Nf6 g3 g6 Bg2 Bg7 Nf3 O-O O-O d6 Nc3 c6
A89	Matulovic Variation, Dutch; A89	d4 f5 c4 Nf6 g3 g6 Bg2 Bg7 Nf3 O-O O-O d6 Nc3 Nc6
A84	Queen’s Knight Variation, Dutch	d4 f5 c4 Nf6 Nc3
A84	Krause Variation, Dutch	d4 f5 c4 Nf6 Nc3 d6 Nf3 Nc6
A85	Ozol Variation, Dutch	d4 f5 c4 Nf6 Nc3 g6 Nf3 Bg7 Bg5
A82	Staunton Gambit, Dutch; A82	d4 f5 e4
A82	Balogh Defense, Dutch	d4 f5 e4 d6
A82	Staunton Gambit Accepted, Dutch	d4 f5 e4 fxe4
A83	General Variation, Staunton Gambit, Dutch; A83	d4 f5 e4 fxe4 Nc3 Nf6 Bg5
A83	Nimzovich Variation, Dutch	d4 f5 e4 fxe4 Nc3 Nf6 Bg5 b6
A83	Chigorin Variation, Dutch	d4 f5 e4 fxe4 Nc3 Nf6 Bg5 c6
A83	Lasker Variation, Dutch	d4 f5 e4 fxe4 Nc3 Nf6 Bg5 g6 f3
A80	Blackmar’s Second Gambit, Dutch	d4 f5 e4 fxe4 Nc3 Nf6 f3
A82	Tartakower Variation, Dutch	d4 f5 e4 fxe4 Nc3 Nf6 g4
A82	American Gambit, Dutch	d4 f5 e4 fxe4 Nd2
A81	Dutch Indian; Leningrad Variation, Dutch; A81	d4 f5 g3
A81	Basman Variation, Dutch	d4 f5 g3 g6 Bg2 Bg7 Nf3 c6 O-O Nh6
A81	Carlsbad Variation, Dutch	d4 f5 g3 g6 Bg2 Bg7 Nh3
A81	Antoshin-Hort Variation, Dutch	d4 f5 g3 Nf6 Bg2 d6
A81	Ilyin-Genevsky Variation, Dutch	d4 f5 g3 Nf6 Bg2 e6 Nf3 Be7 O-O O-O c4 d6
A81	Blackburne Variation, Dutch	d4 f5 g3 Nf6 Bg2 e6 Nh3
A81	Semi-Leningrad Variation, Dutch	d4 f5 g3 Nf6 Bg2 g6
A80	Lisbon Gambit, Dutch; Krejcik Gambit	d4 f5 g4
A80	Hevendehl Gambit, Dutch	d4 f5 g4 e5
A80	Tate Gambit, Dutch	d4 f5 g4 fxg4 e4 d5 Nc3
A80	Korchnoi’s Variation, Dutch	d4 f5 h3
A80	Janzen-Korchnoi Gambit, Dutch	d4 f5 h3 Nf6 g4
A80	Raphael Variation, Dutch	d4 f5 Nc3
A80	Kingfisher Gambit, Dutch	d4 f5 Nc3 d5 e4
A80	Spielmann Gambit, Dutch	d4 f5 Nc3 Nf6 g4
A80	Barcza Variation, Dutch	d4 f5 Nf3 Nf6 c3
A80	Alapin; Ulvestad; Manhattan; Kmoch Variation, Dutch	d4 f5 Qd3
A80	Anti-Stonewall, Dutch	d4 f5 Qd3 d5 g4
A80	Anti-Modern, Dutch	d4 f5 Qd3 d6 g4
A80	Anti-Classical Line, Dutch	d4 f5 Qd3 e6 g4
A80	Anti-Leningrad Variation, Dutch	d4 f5 Qd3 g6 g4
A80	Manhattan Gambit, Dutch	d4 f5 Qd3 Nf6 g4
A80	Pretzel Gambit, Dutch	d4 f5 Qd3 Nf6 g4
A40	Borg Gambit	d4 g5
A40	Queen Pawn Fianchetto	d4 g6
A40	Kotov-Robatsch Defense	d4 g6 c4 Bg7
A40	Pseudo-Saemisch	d4 g6 c4 Bg7 e4 d6 Be3 Nf6 f3
A40	Rossolimo Variation	d4 g6 c4 Bg7 e4 d6 Nf3 Bg4
A40	Neo-Modern Defense	d4 g6 c4 Bg7 e4 e5
A40	Beefeater Variation	d4 g6 c4 Bg7 Nc3 c5 d5 Bxc3+ bxc3 f5
A40	Modern Defense	d4 g6 c4 Bg7 Nc3 d6
A41	Averbakh Variation, Modern	d4 g6 c4 Bg7 Nc3 d6 e4
A41	Pterodactyl Variation, Modern	d4 g6 c4 Bg7 Nc3 d6 e4 c5 Nf3 Qa5
A42	Randspringer Variation	d4 g6 c4 Bg7 Nc3 d6 e4 f5
A40	Kotov Variation, Modern	d4 g6 c4 Bg7 Nc3 d6 e4 Nc6
A40	Lizard Defense; Pirc-Diemer Gambit	d4 g6 h4 Nf6 h5
A40	Bogoljubov; Mikenas-Van Geet Defense	d4 Nc6
A40	Lundin Defense	d4 Nc6
A40	Lithuanian Variation, Mikenas	d4 Nc6 c4 e5 d5 Nce7
A40	Cannstatter Variation, Mikenas	d4 Nc6 c4 e5 d5 Nd4
A40	Pozarek Gambit	d4 Nc6 c4 e5 dxe5 Nxe5 Nc3 Nxc4
A40	Montevideo Defense	d4 Nc6 d5 Nb8
A40	Zaire Defense	d4 Nc6 d5 Nb8 e4 Nf6 e5 Ng8
A45	Indian Defense; A45	d4 Nf6
A45	Basque Opening	d4 Nf6 b3
A45	Trompowsky; Opocensky; Ruth Opening	d4 Nf6 Bg5
A45	Poisoned Pawn Variation, Trompowsky	d4 Nf6 Bg5 c5 d5 Qb6 Nc3
A45	Chepukaitis Gambit	d4 Nf6 Bg5 c5 d5 Qb6 Nc3 Qxb2 Bd2 Qb6
A45	Borg Variation, Trompowsky	d4 Nf6 Bg5 Ne4 Bf4 g5
A45	Edge Variation, Trompowsky	d4 Nf6 Bg5 Ne4 Bh4
A45	Hergert Gambit #2, Trompowsky	d4 Nf6 Bg5 Ne4 Bh4 c6 Nd2 Qa5 c3 Nxd2 Qxd2 d5 e4
A45	Hergert Gambit #1, Trompowsky	d4 Nf6 Bg5 Ne4 Bh4 d5 f3 Nf6 Nc3 Bf5 e4
A45	Raptor Variation, Trompowsky	d4 Nf6 Bg5 Ne4 h4
A45	Hergert Gambit, Trompowsky	d4 Nf6 Bg5 Ne4 h4 Nxg5 hxg5 e5
A50	Normal Variation, Indian Game; A50	d4 Nf6 c4
A50	Pyrenees Gambit	d4 Nf6 c4 b5
A50	Queen’s Indian Defense; Saemisch-Indian	d4 Nf6 c4 b6
A56	Hromadka Defense; Loose Gambit: A56	d4 Nf6 c4 c5
A57	Benko Gambit; Volga; Opocensky; Vaitonis; A57	d4 Nf6 c4 c5 d5 b5
A57	Sosonko Variation, Benko Gambit	d4 Nf6 c4 c5 d5 b5 a4
A57	Bishop Attack, Benko Gambit	d4 Nf6 c4 c5 d5 b5 Bg5
A57	Benko Gambit Accepted	d4 Nf6 c4 c5 d5 b5 cxb5
A57	Pawn Return Variation, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 b6
A58	Fully Accepted Variation, Benko Gambit; A58	d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6
A59	A59	d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 e4
A59	King Walk Variation, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 e4 Bxf1 Kxf1 g6 g3 Bg7 Kg2 O-O
A57	Central Storming Variation, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 d6 f4
A58	Fianchetto Variation, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 bxa6 Bxa6 Nc3 g6 Nf3 d6 g3 Bg7 Bg2
A57	Modern Variation, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 e3
A57	Dlugy Variation, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 f3
A57	Zaitsev System, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 Nc3
A57	Nescafe Frappe Attack, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 Nc3 axb5 e4 b4 Nb5
A57	Zaitsev Variation, Benko Gambit	d4 Nf6 c4 c5 d5 b5 cxb5 a6 Nc3 axb5 e4 b4 Nb5 d6 Nf3 g6 Bc4
A57	Benko Gambit Declined; Hjoerring Countergambit	d4 Nf6 c4 c5 d5 b5 e4
A57	Pseudo-Saemisch, Benko Gambit	d4 Nf6 c4 c5 d5 b5 f3
A57	Mutkin Countergambit, Benko Gambit	d4 Nf6 c4 c5 d5 b5 g4
A57	Quiet Line, Benko Gambit	d4 Nf6 c4 c5 d5 b5 Nd2
A57	Main Line, Benko Gambit Declined	d4 Nf6 c4 c5 d5 b5 Nf3
A56	Hromadka System, Benoni	d4 Nf6 c4 c5 d5 d6
A56	Lundin; Bronstein Counter-Gambit	d4 Nf6 c4 c5 d5 d6 Nc3 g6 e4 b5
A56	Petrosian System; Czech Benoni Defense	d4 Nf6 c4 c5 d5 e5
A56	Czech Variation, Benoni	d4 Nf6 c4 c5 d5 e5 Nc3 d6 e4 Be7
A56	King’s Indian System, Benoni	d4 Nf6 c4 c5 d5 e5 Nc3 d6 e4 g6
A60	Tal Variation, Modern Variation, Benoni; A60	d4 Nf6 c4 c5 d5 e6
A61	A61	d4 Nf6 c4 c5 d5 e6 Nc3
A61	Snake Variation, Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 Bd6
A60	Modern Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6
A65	King Pawn lines, Benoni; A65	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4
A66	Pawn Storm Variation, Benoni; A66	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4
A67	Taimanov Variation, Benoni; A67	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 Bb5
A66	Mikenas V, Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 e5
A68	A68	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 Nf3
A68	Four Pawns Attack, Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 Nf3 O-O
A69	A69	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 f4 Bg7 Nf3 O-O Be2 Re8
A70	Classical Variation, Benoni; A70	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3
A72	A72	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2
A73	A73	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O
A74	A74	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O a6
A75	Argentine Attack, Benoni; A75	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O a6 a4 Bg4
A76	Czerniak Defesne, Benoni; A76	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O Re8
A77	A77	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O Re8 Nd2
A78	A78	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O Re8 Nd2 Na6
A79	A79	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Be2 O-O O-O Re8 Nd2 Na6 f3
A71	A71	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 e4 g6 Nf3 Bg7 Bg5
A61	Penrose Variation, Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 Bd3
A61	Uhlmann Variation, Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 Bg5
A62	A62	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3
A62	Fianchetto Variation, Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3 Bg7 Bg2
A63	A63	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3 Bg7 Bg2 O-O O-O a6
A64	A64	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3 Bg7 Bg2 O-O O-O a6 a4 Nbd7 Nd2
A62	Hastings Defense, Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 g3 Bg7 Bg2 O-O O-O Nbd7
A61	Nimzovich Variation, Knight’s Tour Variation, Benoni	d4 Nf6 c4 c5 d5 e6 Nc3 exd5 cxd5 d6 Nf3 g6 Nd2
A56	Vulture Variation; Der Geier	d4 Nf6 c4 c5 d5 Ne4
A56	Weenink Variation, Benoni	d4 Nf6 c4 c5 dxc5 e6
A53	Old Indian Defense; Chigorin Indian Defense; A53	d4 Nf6 c4 d6
A53	Aged Gibbon Gambit	d4 Nf6 c4 d6 g4
A53	Janowski Variation, Old Indian	d4 Nf6 c4 d6 Nc3 Bf5
A53	Grinberg Gambit, Old Indian	d4 Nf6 c4 d6 Nc3 Bf5 e4
A53	Ukranian Variation	d4 Nf6 c4 d6 Nc3 e5
A54	Two Knights Variation, Old Indian; A54	d4 Nf6 c4 d6 Nc3 e5 Nf3
A55	Normal Variation, Old Indian; A55	d4 Nf6 c4 d6 Nc3 e5 Nf3 Nbd7 e4
A53	Duz-Khotimirsky Variation	d4 Nf6 c4 d6 Nc3 Nbd7 e3 e5 Bd3
A53	Tartakower-Indian	d4 Nf6 c4 d6 Nf3 Bg4
A51	Budapest Defense; A51	d4 Nf6 c4 e5
A51	Fajarowicz Variation, Budapest	d4 Nf6 c4 e5 dxe5 Ne4
A51	Bonsdorf Variation, Budapest	d4 Nf6 c4 e5 dxe5 Ne4 a3 b6
A51	Steiner Variation, Budapest	d4 Nf6 c4 e5 dxe5 Ne4 Qc2
A52	Normal Variation, Budapest; A52	d4 Nf6 c4 e5 dxe5 Ng4
A52	Rubinstein Variation, Budapest	d4 Nf6 c4 e5 dxe5 Ng4 Bf4
A52	Kornl Richter Gambit, Budapest	d4 Nf6 c4 e5 dxe5 Ng4 Bf4 Nc6 Nf3 Bb4+ Nc3 Bxc3+
A52	Center Play Variation, Budapest; Alekhine Variation	d4 Nf6 c4 e5 dxe5 Ng4 e4
A52	Balogh; Tartakower C-G, Budapest	d4 Nf6 c4 e5 dxe5 Ng4 e4 d6
A52	Barmina Gambit, Budapest	d4 Nf6 c4 e5 dxe5 Ng4 e4 Nxe5 f4 Bc5
A52	Wikstrom Gambit, Budapest	d4 Nf6 c4 e5 dxe5 Ng4 e4 Nxe5 f4 Nbc6
A52	Abonyi Variation, Budapest	d4 Nf6 c4 e5 dxe5 Ng4 e4 Nxe5 f4 Nec6
A52	Adler Variation, Budapest	d4 Nf6 c4 e5 dxe5 Ng4 Nf3
E00	East Indian Defense; E00	d4 Nf6 c4 e6
E00	Seirawan Attack	d4 Nf6 c4 e6 Bg5
E00	Catalan Opening	d4 Nf6 c4 e6 g3
E01	E01	d4 Nf6 c4 e6 g3 d5
E06	Closed Variation, Catalan	d4 Nf6 c4 e6 g3 d5 Bg2
E06	E06	d4 Nf6 c4 e6 g3 d5 Bg2 Be7
E07	E07	d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7
E07	Botvinnik Variation, Catalan	d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Nc3 c6 Qd3
E08	E08	d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2
E09	E09	d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 c6 Nbd2
E09	Sokolsky Variation, Catalan	d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 c6 Nbd2 b6 Nbd2 b6 b3 a5 Bb2 Ba6
E08	Zagoriansky Variation, Catalan	d4 Nf6 c4 e6 g3 d5 Bg2 Be7 Nf3 O-O O-O Nbd7 Qc2 c6 Rd1 b6 a4
E06	Tarrasch Defense, Catalan	d4 Nf6 c4 e6 g3 d5 Bg2 c5 Nf3 Nc6
E02	E02	d4 Nf6 c4 e6 g3 d5 Bg2 dxc4
E04	Open Defense, Catalan; E04	d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Nf3
E05	Classical Line, Catalan; E05	d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Nf3 Be7
E05	Modern Sharp Variation, Catalan	d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Nf3 Nc6 Qa4 Bb4+
E03	E03	d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Qa4+ Nbd7 Qxc4
E03	Alekhine Variation, Catalan	d4 Nf6 c4 e6 g3 d5 Bg2 dxc4 Qa4+ Nbd7 Qxc4 a6 Qc2
E00	Hungarian Gambit, Catalan	d4 Nf6 c4 e6 g3 e5
E00	Devin Gambit, Catalan	d4 Nf6 c4 e6 g4
E20	E20	d4 Nf6 c4 e6 Nc3
E20	Nimzo-Indian Defense	d4 Nf6 c4 e6 Nc3 Bb4
E24	Saemisch Variation, Nimzo-Indian; E24	d4 Nf6 c4 e6 Nc3 Bb4 a3
E24	Accelerated Saemisch Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3
E26	Saemisch Variation, Nimzo-Indian; E26	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 e3
E26	O’Kelly Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 e3 b6
E26	Capablanca Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 e3 Nc6 Bd3 O-O Ne2 b6 e4 Ne8
E25	E25	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 f3 d5 cxd5
E25	Keres Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 f3 d5 cxd5 Nxd5 dxc5
E25	Romanovsky Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 f3 d5 cxd5 Nxd5 dxc5 f5
E24	Botvinnik Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 c5 f3 d5 e3 O-O cxd5 Nxd5
E27	E27	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 O-O
E28	E28	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 O-O e3
E29	E29	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 O-O e3 c5 Bd3 Nc6
E29	Capablanca Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 a3 Bxc3+ bxc3 O-O e3 c5 Bd3 Nc6 Ne2 b6 e4 Ne8
E30	Leningrad Variation, Nimzo-Indian; E30	d4 Nf6 c4 e6 Nc3 Bb4 Bg5
E30	Averbakh Gambit, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Bg5 h6 Bh4 c5 d5 b5
E31	Benoni Defense, Nimzo-Indian; E31	d4 Nf6 c4 e6 Nc3 Bb4 Bg5 h6 Bh4 c5 d5 d6
E40	Rubinstein Variation, Nimzo-Indian; E40	d4 Nf6 c4 e6 Nc3 Bb4 e3
E43	St. Petersburg Variation, Nimzo-Indian; E43	d4 Nf6 c4 e6 Nc3 Bb4 e3 b6
E44	Fischer Variation, Nimzo-Indian; E44	d4 Nf6 c4 e6 Nc3 Bb4 e3 b6 Ne2
E45	Bronstein Variation, Nimzo-Indian; E45; Byrne Variation	d4 Nf6 c4 e6 Nc3 Bb4 e3 b6 Ne2 Ba6
E41	Huebner Variation, Nimzo-Indian; E41	d4 Nf6 c4 e6 Nc3 Bb4 e3 c5
E41	Huebner Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 c5 Bd3 Nc6 Nf3 Bxc3
E42	Rubinstein Variation, Nimzo-Indian; E42	d4 Nf6 c4 e6 Nc3 Bb4 e3 c5 Ne2
E42	Sherbakov Attack, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 c5 Ne2 cxd4 exd4 O-O c5
E41	Panov Attack, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 c5 Nf3 cxd4 exd4 d5
E40	Keres Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 d5 a3 Bxc3+ bxc3 c5 cxd5 exd5 Bd3 O-O Ne2 b6
E40	Taimanov Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 Nc6
E40	Ragozin Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 Nc6 Nf3 O-O Bd3 d5 O-O dxc4
E46	Normal Variation, Nimzo-Indian; E46	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O
E47	Bishop Attack, Nimzo-Indian; E47	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3
E48	Classical Defense, Nimzo-Indian; E48	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 d5
E49	Botvinnik System, Nimzo-Indian; E49	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 d5 a3 Bxc3+ bxc3
E48	Olafsson Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 d5 Nf3 c5 O-O dxc4 Bxc4 b6 Qe2 Bb7 Rd1 Qc8
E48	Bronstein Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 d5 Nf3 c5 O-O dxc4 Bxc4 Bd7
E48	Bronstein Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 d5 Nf3 c5 O-O dxc4 Bxc4 Nbd7 Ne2
E48	Smyslov Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Bd3 d5 Nf3 c5 O-O dxc4 Bxc4 Qe7
E46	Reshevsky Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Ne2
E46	Simagin Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Ne2 d5 a3 Bd6
E50	E50	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3
E50	Huebner Deferred, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 c5
E51	Ragozin Variation, Nimzo-Indian; E51	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5
E51	Saemisch Deferred, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 a3
E52	Schlechter Defense, Nimzo-Indian; E52	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 b6
E53	Bernstein Defense; Gligoric System; E53	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5
E53	Keres Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O b6
E54	E54	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O dxc4 Bxc4
E55	Bronstein Variation, Nimzo-Indian; E55	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O dxc4 Bxc4 Nbd7
E55	Smyslov Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O dxc4 Bxc4 Qe7
E56	Bernstein Variation, Nimzo-Indian; E56	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nc6
E58	E58	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nc6 a3 Bxc3 bxc3
E59	E59	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nc6 a3 Bxc3 bxc3 dxc4 Bxc4
E57	E57	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nf3 d5 Bd3 c5 O-O Nc6 a3 dxc4 Bxc4 cxd4
E46	Reshevsky Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nge2
E46	Simagin Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 e3 O-O Nge2 d5 a3 Bd6
E20	Kmoch Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 f3
E20	Steiner Variation, Nimzo-Indian; Romanishin Variation	d4 Nf6 c4 e6 Nc3 Bb4 g3
E21	Three Knights Variation, Nimzo-Indian; E21	d4 Nf6 c4 e6 Nc3 Bb4 Nf3
E21	Korchnoi Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Nf3 c5 d5
E21	Shocron Gambit, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Nf3 c5 d5 b5
E21	Euwe Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Nf3 c5 d5 Ne4
E20	Romanishin Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Nf3 c5 g3 O-O Bg2
E20	English Hybrid, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Nf3 c5 g3 O-O Bg2 cxd4 Nxd4 d5 cxd5 Nxd5
E20	Ragozin Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Nf3 d5
E22	Spielmann Variation, Nimzo-Indian; E22	d4 Nf6 c4 e6 Nc3 Bb4 Qb3
E23	Romanovsky Gambit, Nimzo-Indian; E23	d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6
E23	San Remo Variation, Nimzo-Indian; Stahlberg Variation	d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6 Nf3 Ne4 Bd2 Nxc5
E23	Stahlberg Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6 Nf3 Ne4 Bd2 Nxc5 Qc2 f5 g3
E23	Carlsbad Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6 Nf3 Ne4 Bd2 Nxd2
E23	Stahlberg Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qb3 c5 dxc5 Nc6 Nf3 Ne4 Bd2 Nxd2 Nxd2 O-O O-O-O
E32	Classical Variation, Nimzo-Indian; E32	d4 Nf6 c4 e6 Nc3 Bb4 Qc2
E38	Berlin Variation, Nimzo-Indian; E38	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 c5
E38	Steiner Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 c5 dxc5 Bxc3+
E39	Pirc Variation, Nimzo-Indian; E39	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 c5 dxc5 O-O
E34	Noa Variation, Nimzo-Indian; E34	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5
E36	E36	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3
E36	Botvinnik Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3 Bxc3+ Qxc3 Nc6
E37	E37	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3 Bxc3+ Qxc3 Ne4
E37	San Remo Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 a3 Bxc3+ Qxc3 Ne4 Qc2 Nc6 e3 e5
E35	E35	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 cxd5 exd5
E35	Romanishin Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 cxd5 exd5 Nf3 Qf5
E35	Beliavsky Gambit, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 d5 cxd5 exd5 Nf3 Qf5 Qd1 e5
E33	Milner-Barry, Zurich Variation, Nimzo-Indian; E33	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 Nc6
E33	Milner-Barry Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 Nc6 Nf3 d6
E33	Old Zurich Variation, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 Nc6 Nf3 d6 a3
E33	Vitolinsh-Adorjan Gambit, Nimzo Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 O-O a3 Bxc3+ Qxc3 b5
E33	Keres Defense, Nimzo-Indian	d4 Nf6 c4 e6 Nc3 Bb4 Qc2 O-O a3 Bxc3+ Qxc3 b6
E10	Anti-Nimzo-Indian; E10	d4 Nf6 c4 e6 Nf3
E10	Dzindzi-Indian Defense	d4 Nf6 c4 e6 Nf3 a6
E12	Queen’s Indian Defense; E12	d4 Nf6 c4 e6 Nf3 b6
E12	Petrosian Variation, QID	d4 Nf6 c4 e6 Nf3 b6 a3
E12	Farago Defense, QID	d4 Nf6 c4 e6 Nf3 b6 a3 Ba6 Qc2 Bb7
E12	Murey Variation, QID	d4 Nf6 c4 e6 Nf3 b6 a3 Bb7 Nc3 d5 cxd5 Nxd5 Qc2 c5 e4 Nxc3 bxc3 Nc6 Bb2 cxd4 cxd4 Rc8 1Rd1 Bd6
E12	Miles Variation, QID	d4 Nf6 c4 e6 Nf3 b6 Bf4
E14	Spassky System, QID; E14	d4 Nf6 c4 e6 Nf3 b6 e3
E14	Averbakh Variation, QID	d4 Nf6 c4 e6 Nf3 b6 e3 Bb7 Bd3 c5 O-O Be7 b3 O-O Bb2 cxd4 Nxd4
E15	Fianchetto System, QID; E15	d4 Nf6 c4 e6 Nf3 b6 g3
E15	Nimzovich Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Ba6
E15	Quiet Line, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Ba6 b3
E15	Nimzovich Attack, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Ba6 Qa4+
E15	Timman’s Line, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Ba6 Qb3
E16	Fianchetto Traditional, QID; E16	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7
E16	Capablanca Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Bb4+
E16	Yates Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Bb4+ Bd2 a5
E16	Riumin Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Bb4+ Bd2 Be7
E17	Traditional Variation, QID; E17	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7
E17	Anti-Queen’s Indian System	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 Nc3
E17	Opocensky Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 Nc3 Ne4 Bd2
E17	Classical Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O
E17	Euwe Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O b3
E17	Taimanov Gambit, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O d5 exd5 Nd4
E17	Polugaevsky Gambit, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O d5 exd5 Nh4
E18	E18	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O Nc3
E18	Tiviakov Defense, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O Nc3 Na6
E19	E19	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O Nc3 Ne4 Qc2
E17	Kramnik Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Be7 O-O O-O Re1
E15	Saemisch Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 c5
E16	Buerger Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 c5 d5 exd5 Ng5
E16	Rubinstein Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 c5 d5 exd5 Nh4
E16	Fine Variation, QID	d4 Nf6 c4 e6 Nf3 b6 g3 Bb7 Bg2 Qc8 O-O c5 d5
E12	Kasparov Variation, QID	d4 Nf6 c4 e6 Nf3 b6 Nc3
E12	Kasparov-Petrosian Variation, QID	d4 Nf6 c4 e6 Nf3 b6 Nc3 Bb7 a3
E12	Polovodin Gambit, QID	d4 Nf6 c4 e6 Nf3 b6 Nc3 Bb7 a3 d5 cxd5 Nxd5 e4
E12	Hedgehog Variation, QID	d4 Nf6 c4 e6 Nf3 b6 Nc3 Bb7 a3 g6
E13	E13	d4 Nf6 c4 e6 Nf3 b6 Nc3 Bb7 Bg5 h6 Bh4 Bb4
E12	Botvinnik Variation, QID	d4 Nf6 c4 e6 Nf3 b6 Nc3 Bb7 Bg5 h6 Bh4 g5 Bg3 Nh5
E11	Bogoljubow Defense; Bogo-Indian Defense; E11	d4 Nf6 c4 e6 Nf3 Bb4+
E11	Monticelli Trap	d4 Nf6 c4 e6 Nf3 Bb4+ Bd2 Bxd2+ Qxd2 b6 g3 Bb7 Bg2 O-O Nc3 Ne4 Qc2 Nxc3 Bg5
E11	Nimzovich Variation, Bogo-Indian	d4 Nf6 c4 e6 Nf3 Bb4+ Bd2 Qe7
E11	Grunfeld Variation, Bogo-Indian	d4 Nf6 c4 e6 Nf3 Bb4+ Nbd2
E10	Blumenfeld Variation	d4 Nf6 c4 e6 Nf3 c5
E10	Blumenfeld Countergambit	d4 Nf6 c4 e6 Nf3 c5 d5 b5
E10	Dus-Chotimursky Variation	d4 Nf6 c4 e6 Nf3 c5 d5 b5 Bg5
E10	Spielmann Variation, Blumenfeld	d4 Nf6 c4 e6 Nf3 c5 d5 b5 Bg5 exd5 cxd5 h6
E10	Blumenfeld Countergambit Accepted	d4 Nf6 c4 e6 Nf3 c5 d5 b5 dxe6 fxe6 cxb5 d5
E10	Rubinstein Variation, Blumenfeld	d4 Nf6 c4 e6 Nf3 c5 d5 b5 e4
E10	Dory (Doery) Defense	d4 Nf6 c4 e6 Nf3 Ne4
A50	Medusa Gambit	d4 Nf6 c4 g5
D70	King’s Indian Defense; West Indian Defense; D70	d4 Nf6 c4 g6
E60	King’s Indian Defense; West Indian Defense; E60	d4 Nf6 c4 g6
D70	Anti-Grunfeld Variation	d4 Nf6 c4 g6 d5
D70	Danube Gambit; Adorjan Gambit	d4 Nf6 c4 g6 d5 b5
D70	Danube; Donau Gambit	d4 Nf6 c4 g6 d5 b5 cxb5 a6 bxa6 c6
D70	Nimzovich Attack; Anti-Grunfeld; Alekhine Variation	d4 Nf6 c4 g6 f3
D70	Goglidze Attack	d4 Nf6 c4 g6 f3 d5
D70	Leko Gambit	d4 Nf6 c4 g6 f3 e5
E60	Fianchetto Variation, KID	d4 Nf6 c4 g6 g3
E60	Counterthrust Variation	d4 Nf6 c4 g6 g3 Bg7 Bg2 d5
E60	Kemeri Variation	d4 Nf6 c4 g6 g3 Bg7 Bg2 d5 cxd5 Nxd5 Nf3 O-O O-O c5
E60	Yugoslav Variation	d4 Nf6 c4 g6 g3 Bg7 Bg2 d6 Nf3 O-O Nc3 c5
E60	Bronstein Variation	d4 Nf6 c4 g6 g3 Bg7 Bg2 d6 Nf3 O-O Nc3 c6 O-O Qa5
E60	Panno Variation	d4 Nf6 c4 g6 g3 Bg7 Bg2 d6 Nf3 O-O Nc3 Nc6 O-O a6 h3 Rb8
E60	Spassky Variation	d4 Nf6 c4 g6 g3 Bg7 Bg2 d6 Nf3 O-O Nc3 Nc6 O-O Bf5
E60	Simagin Variation	d4 Nf6 c4 g6 g3 Bg7 Bg2 d6 Nf3 O-O Nc3 Nc6 O-O Bg4
E60	Szabo Variation	d4 Nf6 c4 g6 g3 Bg7 Bg2 d6 Nf3 O-O Nc3 Nc6 O-O e5
E60	Panno System	d4 Nf6 c4 g6 g3 Bg7 Bg2 d6 Nf3 O-O O-O Nc6 d5 Na5
E60	Pomar Variation, KID	d4 Nf6 c4 g6 g3 Bg7 Bg2 O-O Nge2
D70	Kemeri; Neo-Grunfeld	d4 Nf6 c4 g6 g3 d5
D71	Counterthrust Variation	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7
D71	Exchange Variation, Neo-Grunfeld	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 cxd5 Nxd5
D72	D72	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 cxd5 Nxd5 e4 Nb6
D73	D73	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3
D74	Delayed Exchange Variation, Neo-Grunfeld; D74	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O cxd5 Nxd5 O-O
D75	D75	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O cxd5 Nxd5 O-O c5
D76	D76	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O cxd5 Nxd5 O-O Nb6
D77	Classical Variation, Neo-Grunfeld; D77	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O
D78	Original Defesne, Neo-Grunfeld; D78	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O c6
D79	D79	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O c6 cxd5
D79	Ultra-delayed Exchange Variation, Neo-Grunfeld	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O c6 cxd5 cxd5
D78	Modern Defense, Neo-Grunfeld	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O dxc4
D78	Polgar Variation, Neo-Grunfeld	d4 Nf6 c4 g6 g3 d5 Bg2 Bg7 Nf3 O-O O-O Nc6
E61	E61	d4 Nf6 c4 g6 Nc3
E61	Smyslov Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 Bg5
E70	Normal Variation, KID; E70	d4 Nf6 c4 g6 Nc3 Bg7 e4
E77	Six Pawns Attack, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6
E73	E73	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2
E73	Semi-Averbakh System, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Be3
E73	Averbakh Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5
E73	Spanish Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 a6
E74	Benoni Defense, KID; E74	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 c5
E75	E75	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 c5 d5 c6
E73	Flexible Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 h6
E73	Burgess Line, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 Na6 Qd2 c6
E73	Geller Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Be2 O-O Bg5 Nbd7
E70	Accelerated Averbakh Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Bg5
E80	Saemisch Variation, KID; E80	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3
E80	Bronstein Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 e5 d5 Nh5 Be3 Na6 Qd2 Qh4+ g3 Nxg3 Qf2 Nxf1 Qxh4 Nxe3 1Kf2 Nxc4
E81	Normal Defesne, Sameisch Variation, KID; E81	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O
E82	Double Fianchetto, KID; E82	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 b6
E81	Byrne Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 c6 Bd3 a6
E85	Orthodox Variation, KID; E85	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5
E87	Closed Variation, KID; E87	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 d5
E88	E88	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 d5 c6
E89	E89	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 d5 c6 Nge2
E87	Bronstein Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 d5 Nh5 Qd2 Qh4+ g3 Nxg3 Qf2 Nxf1
E86	E86	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 e5 Nge2 c6
E83	Yates Defense, KID; E83	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 Nc6
E83	Panno Formation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 Nc6 Nge2 a6
E84	E84	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 Nc6 Nge2 a6 Qd2 Rb8
E83	Ruban Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Be3 Nc6 Nge2 Rb8
E81	Steiner Attack, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Bg5
E81	Bobotsov-Korchnoi-Petrosian Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f3 O-O Nge2
E76	Four Pawns Attack, KID; E76	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4
E76	Six Pawns Attack, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 c5 d5 O-O Be2 e6 dxe6 fxe6 g4 Nc6 h4
E76	Modern Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 Na6
E77	E77	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2
E77	Florentine Gambit, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 c5 d5 e6 Nf3 exd5 e5
E78	Fluid Attack, KID; E78	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 c5 Nf3
E79	Exchange Variation, Four Pawns Attack, KID; E79	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Be2 c5 Nf3 cxd4 Nxd4 Nc6 Be3
E76	Dynamic Attack, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 f4 O-O Nf3 c5 d5
E72	Deferred Fianchetto, KID; E72	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 g3
E72	Pomar System, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 g3 O-O Bg2 e5 Nge2
E71	Makogonov Variation, KID; E71	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 h3
E90	E90	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3
E91	Orthodox Variation, KID; E91	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2
E92	E92	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5
E92	Gligoric-Taimanov Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 Be3
E92	Petrosian Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 d5
E92	Stein Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 d5 a5
E93	E93	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 d5 Nbd7
E93	Keres Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 d5 Nbd7 Bg5 h6 Bh4 g5 Bg3 Nh5 h4
E94	E94	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O
E94	Ukranian Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O a5
E94	Donner Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O c6
E94	Glek Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Na6
E95	E95	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nbd7 Re1
E96	E96	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nbd7 Re1 c6 Bf1 a5
E97	Aronin-Taimanov Variation, KID; E97	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6
E97	Normal Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7
E97	Bayonet Attack, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 b4
E97	Yepishin’s Line, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 b4 Nh5 Qc2
E97	Sokolov’s Line, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 b4 Nh5 Re1
E97	Korchnoi Attack, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 Bd2
E98	E98	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 Ne1
E98	Kozul Gambit, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 Ne1 Nd7 Be3 f5
E99	Benko Attack, KID; E99	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 Ne1 Nd7 f3
E99	Benko Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be2 e5 O-O Nc6 d5 Ne7 Ne1 Nd7 f3 f5 g4
E90	Larsen Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Be3
E90	Zinnowitz Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Bg5
E91	Kazakh Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 e4 d6 Nf3 O-O Na6
E61	Smyslov Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 Bg5
E62	Delayed Fianchetto, KID; E62	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3
E64	Yugoslav Variation, KID; E64	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c5
E65	E65	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c5 O-O
E66	E66	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c5 O-O Nc6 d5
E62	Larsen Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c6 O-O Bf5
E62	Kavalek Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c6 O-O Qa5
E62	Benjamin Defense, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 c6 O-O Qb6
E67	Debrecen Defense, KID; E67	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nbd7
E68	E68	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nbd7 O-O e5 e4
E69	E69	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nbd7 O-O e5 e4 c6 h3
E62	Carlsbad Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6
E63	Panno Variation, KID; E63	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 O-O a6
E62	Lesser Simagin (Spassky) Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 O-O Bf5
E62	Simagin Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 O-O Bg4
E62	Uhlmann-Szabo System, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 g3 O-O Bg2 Nc6 O-O e5
E70	Kramer Variation, KID	d4 Nf6 c4 g6 Nc3 Bg7 Nf3 d6 Nge2
D80	Grunfeld Defense; D80	d4 Nf6 c4 g6 Nc3 d5
D82	Brinckmann Attack, Grunfeld; D82	d4 Nf6 c4 g6 Nc3 d5 Bf4
D83	Grunfeld Gambit; D83	d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O
D84	D84	d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O cxd5 Nxd5
D83	Capablanca Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O Rc1
D83	Botvinnik Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O Rc1 c5 dxc5 Be6
D83	Reshevsky Gambit, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Bf4 Bg7 e3 O-O Rc1 c5 dxc5 Qa5
D80	Stockholm Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Bg5
D80	Lundin Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Bg5 Ne4 Nxe4 dxc3 Qd2 c5
D85	Exchange Variation, Grunfeld; D85	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5
D85	Exchange Variation, Grunfeld;	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3
D86	Classical Main Line, Grunfeld; D86	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4
D86	Simagin Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 b6 h4 Ba6
D87	Spassky Variation, Grunfeld; D87	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5
D87	Seville Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 O-O Nc6 Be3
D88	D88	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 O-O Nc6 Be3 cxd4
D89	D89	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 O-O Nc6 Be3 cxd4 cxd4 Bg4 1f3 Na5 1Bd3
D89	Sokolsky Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 c5 O-O Nc6 Be3 cxd4 cxd4 Bg4 1f3 Na5 1Bd3 Be6 1d5
D86	Simagin Improved Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 Nc6
D86	Larsen Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 Qd7
D86	Larsen Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Bc4 O-O Ne2 Qd7 O-O b6
D85	Modern Main Line, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Nf3
D85	Kramnik’s Line, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 e4 Nxc3 bxc3 Bg7 Nf3 c5 h3
D85	Kemeri Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 g3
D85	Nadanian Attack	d4 Nf6 c4 g6 Nc3 d5 cxd5 Nxd5 Na4
D80	Makogonov Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O b4
D80	Opocensky Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O Bd2
D80	Paris Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O Bd3
D80	Schlechter Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O Bd3 c6
D80	Flohr Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O Bd3 c6 O-O Bf5
D80	Smyslov Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O Bd3 c6 O-O Bg4
D80	Vienna Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O Qb3
D80	Pachman Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O Qb3 dxc4 Bxc4 Nbd7 Ng5
D80	Botvinnik Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 Bg7 Nf3 O-O Qb3 e6
D80	Schlechter Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 e3 c6
D70	Lutikov Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 f3
D70	Murey Attack, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 f3 c5 cxd5 Nxd5 Na4
D80	Kemeri Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 g3
D80	Gibbon Gambit; Grunfeld Spike	d4 Nf6 c4 g6 Nc3 d5 g4
D80	Zaitsev Gambit, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 h4
D90	Three Knights Variation, Grunfeld; D90	d4 Nf6 c4 g6 Nc3 d5 Nf3
D92	Hungarian Attack, Grunfeld; D92	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Bf4
D93	D93	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Bf4 O-O e3
D91	Petrosian System, Grunfeld; D91	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Bg5
D94	Burille Variation, Grunfeld; D94	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3
D94	Makogonov Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O b4
D94	Opocensky Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Bd2
D95	D95	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 e3 O-O Qb3
D90	Flohr Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qa4+
D96	Russian Variation, Grunfeld; D96	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3
D97	D97	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4
D97	Hungarian Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 a6
D97	Levenfish Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 b6
D98	Smyslov Variation, Grunfeld; D98	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Bg4
D98	Keres Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Bg4 Be2 Nfd7 Be2 Nb6 Qd3 Nc6 O-O-O Qc8
D99	D99	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Bg4 Be3 Nfd7 Qb3
D99	Yugoslav Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Bg4 Be3 Nfd7 Qb3 c5
D97	Szabo (Boleslavsky) Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 c6
D97	Prins Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Na6
D97	Simagin (Byrne) Variation, Grunfeld	d4 Nf6 c4 g6 Nc3 d5 Nf3 Bg7 Qb3 dxc4 Qxc4 O-O e4 Nc6
D90	Slav Fianchetto	d4 Nf6 c4 g6 Nc3 d5 Nf3 Nf6 Nc3 g6
D81	Accelerated Russian Variation, Grunfeld; D81	d4 Nf6 c4 g6 Nc3 d5 Qb3
E60	King’s Knight Variation, KID	d4 Nf6 c4 g6 Nf3
E60	Santassiere Variation, KID	d4 Nf6 c4 g6 Nf3 Bg7 b4
D70	Neo-Grunfeld Defense	d4 Nf6 c4 g6 Nf3 d5
A50	Van Geet; Kevitz; Trajkovic; Mexican	d4 Nf6 c4 Nc6
D70	Iago Defense	d4 Nf6 c4 Nc6
A50	Horsefly Gambit	d4 Nf6 c4 Nc6 d5 Ne5 f4
D71	D71	d4 Nf6 c4 Nc6 g3 d5
A45	Pawn Push Variation	d4 Nf6 d5
A45	Omega Gambit	d4 Nf6 e4
A45	Arafat Gambit	d4 Nf6 e4 Nxe4 Bd3 Nf6 Bg5
A45	Paleface Attack	d4 Nf6 f3
A45	Webster Gambit	d4 Nf6 f3 c5 d5 e6 e4 exd5 e5
A45	Blackmar-Diemer Gambit Deferred	d4 Nf6 f3 d5 e4
A45	Kraus-Muhlherr Counter Gambit	d4 Nf6 f3 d5 e4 e5 dxe5 Nxe4
A45	Gedult Attack	d4 Nf6 f3 d5 g4
A45	Gedult-Gunderam System	d4 Nf6 f3 d5 g4
A45	Linder Counter Gambit	d4 Nf6 f3 e6 e4 Nxe4
A45	Canard Attack	d4 Nf6 f4
A45	Ueberlinger Gambit	d4 Nf6 g3 e5
A45	Bullfrog; Weidenhagen; Krabbe; Ochsenfrosch	d4 Nf6 g4
A45	Bronstein Gambit	d4 Nf6 g4
A45	Oshima Defense	d4 Nf6 g4 e5
A45	Gibbins-Wiedehagen Gambit Accepted	d4 Nf6 g4 Nxg4
A45	Stummer Gambit	d4 Nf6 g4 Nxg4 e4 d6 Be2 Nf6 Nc3
A45	Maltese Falcon	d4 Nf6 g4 Nxg4 f3 Nf6 e4
A45	Reversed Chigorin Defense	d4 Nf6 Nc3 c5
A45	Von Beivorseen	d4 Nf6 Nc3 c5 dxc5
A45	Malich Gambit	d4 Nf6 Nc3 d5 Bg5 c5 Bxf6 gxf6 e4 dxe4 d5
A45	Huebsch Gambit	d4 Nf6 Nc3 d5 e4 Nxe4
A45	Maddigan Gambit	d4 Nf6 Nc3 e5
A45	Lazard Gambit; Maddigan Gambit	d4 Nf6 Nd2 e5
A46	Knights Variation, Indian Game; A46	d4 Nf6 Nf3
A46	Polish Defense	d4 Nf6 Nf3 b5
A47	Capablanca Variation, Indian Game; A47	d4 Nf6 Nf3 b6
A47	Torre Attack	d4 Nf6 Nf3 b6 Bg5
A47	Schnepper Gambit	d4 Nf6 Nf3 b6 c3 e5
A47	Marienbad Variation	d4 Nf6 Nf3 b6 g3 Bb7 Bg2 c5
A47	Berg Variation	d4 Nf6 Nf3 b6 g3 Bb7 Bg2 c5 c4 cxd4 Qxd4
A46	Spielmann-Indian	d4 Nf6 Nf3 c5
A46	Pseudo-Benko Gambit	d4 Nf6 Nf3 c5 d5 b5
A46	Czech-Indian	d4 Nf6 Nf3 c6
A46	London System	d4 Nf6 Nf3 e6 Bf4
A46	Torre Attack	d4 Nf6 Nf3 e6 Bg5
A46	Petrosian Gambit	d4 Nf6 Nf3 e6 Bg5 c5 e3 b6 d5
A46	Swiss; Wagner Gambit	d4 Nf6 Nf3 e6 Bg5 c5 e4
A46	Nimzovich Variation, Torre Attack	d4 Nf6 Nf3 e6 Bg5 h6
A46	Yusupov-Rubinstein System	d4 Nf6 Nf3 e6 e3
A48	Pseudo-King’s Indian Variation; A48	d4 Nf6 Nf3 g6
A48	London System, Torre Attack	d4 Nf6 Nf3 g6 Bf4
A48	London Variation	d4 Nf6 Nf3 g6 Bf4 Bg7 Nbd2
A48	Fianchetto Defense, Torre Attack	d4 Nf6 Nf3 g6 Bg5
A48	Euwe Variation, Torre Attack	d4 Nf6 Nf3 g6 Bg5 Bg7 Nbd2 c5
A48	King’s Indian Variation	d4 Nf6 Nf3 g6 e3 Bg7 Bd3 d6
A49	Przepiorka Variation; A49	d4 Nf6 Nf3 g6 g3
D02	Barry Attack	d4 Nf6 Nf3 g6 Nc3 d5 Bf4 Bg7 e3 O-O Be2
A46	Dory Defense	d4 Nf6 Nf3 Ne4
B00	Ware Defense	e4 a5
B00	Corn Stalks	e4 a5
B00	Snagkeouss Defense	e4 a5 d4 Nc6
B00	St George; Birmingham; Baker	e4 a6
B00	San Jorge Variation	e4 a6 d4 b5 Nf3 Bb7 Bd3 d6 O-O g6 c3 Bg7
B00	Polish Variation, St George Defense	e4 a6 d4 b5 Nf3 Bb7 Bd3 e6
B00	Zilbermints Gambit, St George Defense	e4 a6 d4 e5
B00	San Jorge Variation	e4 a6 d4 e6
B00	Three Pawn Attack, St George	e4 a6 d4 e6 c4
B00	Sanky-Georg Gambit, St George	e4 a6 d4 e6 c4 b5
B00	Woodchuck Variation, St George	e4 a6 d4 Nc6
B00	Owen’s Defense; Greek Defense	e4 b6
B00	Guatemalan Defense	e4 b6 d4 Ba6
B00	Matovinsky Gambit	e4 b6 d4 Bb7 Bd3 f5
B00	Matovinsky Gambit	e4 b6 d4 Bb7 Bd3 f5 exf5 Bxg2 Qh5+ g6
B00	Naselwaus Variation, Owen’s Defense	e4 b6 d4 Bb7 Bg5
B00	Wind Gambit, Owen Defense	e4 b6 d4 Bb7 f3 e5
B00	Smith Gambit, Owen Defense	e4 b6 d4 Bb7 Nf3
B00	Hekili-Loa Gambit, Owen Defense	e4 b6 d4 c5 dxc5 Nc6
B20	Sicilian Defense; B20	e4 c5
B20	Mengarini Gambit, Sicilian	e4 c5 a3
B20	Mengarini Gambit, Sicilian	e4 c5 a3 Nc6 b4
B20	Snyder Variation, Sicilian	e4 c5 b3
B20	Queen Fianchetto Variation, Sicilian	e4 c5 b3 b6
B20	Wing Gambit, Sicilian	e4 c5 b4
B20	Marshall Variation, Sicilian	e4 c5 b4 cxb4 a3
B20	Wing; Carlsbad Variation, Sicilian	e4 c5 b4 cxb4 a3 bxa3
B20	Marienbad Variation, Sicilian	e4 c5 b4 cxb4 a3 d5 exd5 Qxd5 Bb2
B20	Abrahams Variation, Sicilian Wing Gambit	e4 c5 b4 cxb4 Bb2
B20	Santasiere Wing Gambit, Sicilian	e4 c5 b4 cxb4 c4
B20	Bowlder Attack, Sicilian	e4 c5 Bc4
B20	Slow Sicilian	e4 c5 Be2
B22	Alapin; Sveshnikov Var, Sicilian; B22	e4 c5 c3
B22	Barmen Defense, Sicilian	e4 c5 c3 d5 exd5 Qxd5
B22	Sherzer Variation, Sicilian	e4 c5 c3 Nf6 e5 Nd5 d4 e6 Nf3 Nc6
B22	Stoltz Attack, Sicilian	e4 c5 c3 Nf6 e5 Nd5 Nf3 Nc6 Bc4 Nb6 Bb3
B20	Staunton-Cochrane Variation, Sicilian	e4 c5 c4
B20	Gloria Variation, Sicilian	e4 c5 c4 d6 Nc3 Nc6 g3 h5
B20	Chameleon Variation, Sicilian	e4 c5 d3
B20	Big Clamp Variation, Sicilian	e4 c5 d3 Nc6 c3 d6 f4
B20	Sicilian Center Game	e4 c5 d4 cxd4
B20	Smith-Morra; Fleissig Gambit, Sic	e4 c5 d4 cxd4 c3
B20	Rivadavia Gambit, Sicilian	e4 c5 d4 cxd4 c3
B20	Push Variation, Smith-Morra Gambit, Sicilian	e4 c5 d4 cxd4 c3 d3
B20	Dubois Variation, Sicilian	e4 c5 d4 cxd4 c3 d3 c4
B20	Scandanavian Formation, Smith-Morra, Sicilian	e4 c5 d4 cxd4 c3 d5
B20	Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3
B20	Chicago Defense, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 d6 Bc4 e6 Nf3 Nf6 O-O a6
B20	Taimanov Formation, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 e6 Bc4 a6 Nf3 Ne7
B20	Kan Formation, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 e6 Nf3 a6
B20	Fianchetto Defense, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 e6 Nf3 g6
B20	Classical Formation, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 d6 Bc4 a6 O-O Nf6
B20	Scheveningen Formation, Smith-Morra Accepted	e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 d6 Bc4 e6
B20	Paulsen Formation, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 e6 Bc4 a6
B20	Morphy Defense Deferred, Smith-Morra Accepted	e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 e6 Bc4 a6 O-O b5 Bb3 Bc5
B20	Larsen Defense, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 e6 Bc4 a6 O-O Qc7 Qe2 Bd6
B20	Pin Defense, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 e6 Bc4 Bb4
B20	Morphy Defense, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 e6 Bc4 Bc5
B20	Sozin Formation, Smith-Morra Accepted, Sicilian	e4 c5 d4 cxd4 c3 dxc3 Nxc3 Nc6 Nf3 e6 Bc4 d6 O-O a6 Qe2 b5
B20	Center Formation, Smith-Morra Declined, Sicilian	e4 c5 d4 cxd4 c3 e5
B20	Alapin Formation, Smith-Morra Declined, Sicilian	e4 c5 d4 cxd4 c3 Nf6
B20	Wing Formation, Smith-Morra Declined, Sicilian	e4 c5 d4 cxd4 c3 Qa5
B20	Halasz Gambit, Sicilian	e4 c5 d4 cxd4 f4
B20	Morphy Gambit, Sicilian	e4 c5 d4 cxd4 Nf3
B20	Andreaschek Gambit, Sicilian	e4 c5 d4 cxd4 Nf3 e5 c3
B21	Larsen-Santasiere (McDonnell Attack) Variation, Sicilian; B21	e4 c5 f4
B21	Tal Gambit, Sicilian	e4 c5 f4 d5 exd5 Nf6
B20	Steinitz; Tartakower, Lasker-Dunne Variation, Sicilian	e4 c5 g3
B20	Myers Attack, Sicilian	e4 c5 h4
B20	King David’s Opening	e4 c5 Ke2
B23	Closed; Chigorin Variation, Sicilian; B23	e4 c5 Nc3
B23	Grand Prix Variation, Sicilian	e4 c5 Nc3 d6 f4
B23	Marshall Gambit, Sicilian	e4 c5 Nc3 e6 d4 d5
B23	Korchnoi Defense, Sicilian	e4 c5 Nc3 e6 g3 d5
B23	Traditional Closed Sicilian	e4 c5 Nc3 Nc6
B23	Portland Attack, Sicilian	e4 c5 Nc3 Nc6 d3 g6 g4
B23	Vinken System, Sicilian; Grand Prix Attack	e4 c5 Nc3 Nc6 f4
B23	Schofman Variation, Sicilian	e4 c5 Nc3 Nc6 f4 g6 Nf3 Bg7 Bc4 e6 f5
B24	Fianchetto Variation, Sicilian Closed; B24	e4 c5 Nc3 Nc6 g3
B25	B25	e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6
B26	B26	e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 Be3
B25	Botvinnik Defense, Sicilian Closed	e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 f4 e5
B25	Edge Variation, Sicilian Closed	e4 c5 Nc3 Nc6 g3 g6 Bg2 Bg7 d3 d6 f4 e5 Nh3 Nge7
B23	Chameleon Sicilian	e4 c5 Nc3 Nc6 Nge2
B20	Keres; Billium Attack, Sicilian; Chameleon	e4 c5 Ne2
B27	B27	e4 c5 Nf3
B28	O’Kelly Variation, Sicilian; B28	e4 c5 Nf3 a6
B28	Kieseritzky System, Sicilian	e4 c5 Nf3 a6 b3
B28	Wing Gambit, Sicilian	e4 c5 Nf3 a6 b4
B28	Aronin System, Sicilian	e4 c5 Nf3 a6 Be2
B28	Venice System, Sicilian	e4 c5 Nf3 a6 c3
B28	Ljubojevic Line, Sicilian	e4 c5 Nf3 a6 c3 b5
B28	Gambit Line, O’Kelly Sicilian	e4 c5 Nf3 a6 c3 d5 exd5 Nf6
B28	Steiner Line, Sicilian	e4 c5 Nf3 a6 c3 d6
B28	Barcza Line, Sicilian	e4 c5 Nf3 a6 c3 Nf6
B28	Maroczy Bind, O’Kelly Sicilian	e4 c5 Nf3 a6 c4
B28	Robatsch Line, Sicilian	e4 c5 Nf3 a6 c4 d6
B28	Paulsen Line, Sicilian	e4 c5 Nf3 a6 c4 e6
B28	Geller Line, Sicilian	e4 c5 Nf3 a6 c4 Nc6 d4 cxd4 Nxd4 e5
B28	Quiet System, O’Kelly Sicilian	e4 c5 Nf3 a6 d3
B28	Normal System, O’Kelly Sicilian	e4 c5 Nf3 a6 d4
B28	Cortlever Gambit, Sicilian	e4 c5 Nf3 a6 d4 cxd4 Bc4
B28	Smith-Morra Line, O’Kelly Sicilian	e4 c5 Nf3 a6 d4 cxd4 c3
B28	Taimanov Line, O’Kelly Sicilian	e4 c5 Nf3 a6 d4 cxd4 Nxd4 e5
B28	Kan Line, O’Kelly Sicilian	e4 c5 Nf3 a6 d4 cxd4 Nxd4 e6
B28	Zagorovsky Line, O’Kelly Sicilian	e4 c5 Nf3 a6 d4 cxd4 Qxd4
B28	Reti System, O’Kelly Sicilian	e4 c5 Nf3 a6 g3
B28	Yerevan System, O’Kelly Sicilian	e4 c5 Nf3 a6 Nc3
B27	Polish Gambit, Sicilian	e4 c5 Nf3 b5
B27	Katalimov Variation, Sicilian	e4 c5 Nf3 b6
B50	Modern Variation, Sicilian; B50	e4 c5 Nf3 d6
B51	Wing Gambit Deferred, Sicilian	e4 c5 Nf3 d6 b4
B51	Moscow Variation, Sicilian; Canal Attack; B51	e4 c5 Nf3 d6 Bb5+
B52	Main Line, Canal Attack, Sicilian; B52	e4 c5 Nf3 d6 Bb5+ Bd7
B52	Bronstein (Haag) Gambit, Sicilian	e4 c5 Nf3 d6 Bb5+ Bd7 Bxd7+ Qxd7 O-O Nc6 c3 Nf6 d4
B51	Moscow Gambit, Sicilian	e4 c5 Nf3 d6 Bb5+ Nc6 O-O Bd7 c3 a6 Bxc6 Bxc6 Re1 Nf6 d4 Bxe4 Bg5
B51	Dorfman Gambit, Sicilian	e4 c5 Nf3 d6 Bb5+ Nc6 O-O Bd7 Qe2 g6 e5
B50	Kopec System, Sicilian	e4 c5 Nf3 d6 Bd3
B50	Delayed Alapin, Sicilian	e4 c5 Nf3 d6 c3
B50	Basman-Palatnik Gambit	e4 c5 Nf3 d6 c3 Nf6 Be2 Nc6 d4 cxd4 cxd4 Nxe4
B53	B53	e4 c5 Nf3 d6 d4
B53	Tartakower Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 c3
B54	B54	e4 c5 Nf3 d6 d4 cxd4 Nxd4
B55	B55	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6
B55	Ginsberg Gambit, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Bc4
B55	Moscow (Prins) Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 f3
B55	Venice Attack, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 f3 e5 Bb5+
B56	B56	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3
B90	Najdorf Variation, Sicilian; B90	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6
B90	Lipnitzky Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bc4
B92	Opocensky Variation, Sicilian; B92	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Be2
B92	Opocensky Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Be2 e5
B90	Byrne Variation, Sicilian; English Attack	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Be3
B90	Anti-English, Najdorf Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Be3 Ng4
B94	B94	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5
B95	B95	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6
B96	B96	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4
B96	Polugaevsky; Accelerated Najdorf	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 b5
B96	Simagin Line, Najdorf Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 b5 e5 dxe5 fxe5 Qc7 Qe2
B98	B98	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7
B98	Argenitne; Goteborg Var, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7 Qf3 h6 Bh4 g5
B98	Browne Variation, Najdorf Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7 Qf3 h6 Bh4 Qc7
B99	B99	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Be7 Qf3 Qc7 O-O-O Nbd7
B97	Poisoned Pawn Variation, Najdorf Sicilian; B97	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Qb6
B97	Poisoned Pawn Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Qb6 Qd2
B97	Poisoned Pawn Accepted, Najdorf Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Bg5 e6 f4 Qb6 Qd2 Qxb2
B93	Amsterdam Variation, Sicilian; B93	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 f4
B91	Zagreb Variation, Sicilian; B91	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 g3
B90	Adams Attack, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 h3
B90	Freak Attack, Siicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 a6 Rg1
B56	Kupreichik Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Bd7
B56	Venice Attack, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Bb5+
B80	Scheveingen Variation, Sicilian; B80	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6
B80	Vitolins Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bb5+
B86	Fischer Attack, Sozin Attack, Sicilian; B86	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4
B87	Flank Variation, Sicilian; B87	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 a6 Bb3 b5
B88	Leonhardt Variation, Sicilian; B88	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 Nc6
B89	B89	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 Nc6 Be3
B89	Sherbakov Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 Nc6 Be3 Be7 Bb3 O-O O-O Na5 f4 b6
B89	Velimirovic Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Bc4 Nc6 Be3 Be7 Qe2
B83	Scheveningen Variation, Sicilian; B83	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2
B84	Modern Paulsen, Sicilian; B84	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6
B85	B85	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 O-O Be7
B85	Paulsen Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be2 a6 O-O Qc7 f4 Nc6
B80	English Attack, Scheveningen Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be3 a6 f3
B81	Delayed Keres Attack, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be3 a6 g4
B81	Perenyi Gambit, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 Be3 a6 g4 e5 Nf5 g6 g5
B82	Matanovic Attack, Sicilian; B82	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 f4
B82	Tal Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 f4 Nc6 Be3 Be7 Qf3
B80	Fianchetto Variation, Scheveningen Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 g3
B81	Keres; Panov Variation, Sicilian; B81	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 e6 g4
B70	Dragon Variation, Sicilian; B70	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6
B70	Alekhine Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be2 Bg7 O-O O-O Nb3
B72	B72	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3
B72	Nottingham Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 Nb3
B73	B73	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O
B73	Zollner Gambit, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O f4 Qb6
B74	B74	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3
B74	Alekhine Line, Sicilian Dragon	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 a5
B74	Maroczy Line, Sicilian Dragon	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 Be6 f4 Na5
B74	Tartakower Line, Sicilian Dragon	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 O-O O-O Nb3 Be6 f4 Qc8
B72	Amsterdam (Battery) Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 Qd2
B72	Grigoriev Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 Be2 Nc6 Qd2 O-O O-O-O
B75	B75	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3
B76	Yugoslav Attack, Sicilian Dragon; B76	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O
B77	B77	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4
B78	B78	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 Bd7 O-O-O
B79	B79	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 Bd7 O-O-O Qa5
B77	Sosonko Variation, Sicilian Dragon	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 Nd7
B77	Czerniak Variation, Sicilian Dragon	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 Bc4 Nxd4 Bxe4
B76	Panov Variation, Sicilian Dragon	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 Be3 Bg7 f3 O-O Qd2 Nc6 g4
B71	Levenfish Variation, Sicilian; B71	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 f4
B70	Fianchetto Variation, Sicilian Dragon	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 g6 g3
B56	Classical Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6
B57	Sozin; Velimirovic Attack, Sicilian; B57	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bc4
B57	Anti-Sozin Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bc4 Qb6
B56	Yates Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bd3
B58	B58	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Be2
B58	Boleslavsky Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Be2 e5
B59	B59	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Be2 e5 Nb3
B58	Louma Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Be2 e5 Nxc6
B60	Richter-Rauzer Variation, Sicilian; B60	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5
B62	B62	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6
B62	Margate (Vitolins) Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Bb5
B62	Podebrady Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Nb3
B62	Exchange Variation, Richter-Rauzer Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Nxc6
B63	Rauzer Variation, Sicilian; B63	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2
B66	B66	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 a6
B67	B67	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 a6 O-O-O Bd7
B68	B68	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 a6 O-O-O Bd7 f4 Be7
B69	B69	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 a6 O-O-O Bd7 f4 Be7 Nf3 b5 Bxf6
B64	B64	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 Be7 O-O-O O-O f4
B65	B65	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 Be7 O-O-O O-O f4 Nxd4 Qxd4
B63	Ivanov Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 e6 Qd2 Qb6
B60	Dragon Variation, Richter-Rauzer Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Bg5 g6
B58	Fianchetto Variation, Richter-Rauzer Sicilizn	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 g3
B56	Spielmann Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Nde2
B61	B61	e4 c5 Nf3 d6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Qd2
B53	Chekhover Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Qxd4
B53	Zaitsev Variation, Sicilian	e4 c5 Nf3 d6 d4 cxd4 Qxd4 Nc6 Bb5 Qd7
B53	Lazy Knight Variation, Sicilian	e4 c5 Nf3 d6 d4 Nd7
B53	Cortlever Variation, Sicilian	e4 c5 Nf3 d6 d4 Nf6 dxc5 Nxe4 cxd6
B50	Kotov Gambit, Sicilian	e4 c5 Nf3 d6 g3 b5
B27	Jalalabad Variation, Sicilian	e4 c5 Nf3 e5
B40	French Variation, Sicilian; B40	e4 c5 Nf3 e6
B40	Wing Gambit Deferred, Sicilian	e4 c5 Nf3 e6 b4
B40	Kramnik Variation, Sicilian	e4 c5 Nf3 e6 c4
B41	B41	e4 c5 Nf3 e6 d4
B41	Accelerated Wimpy Variation, Sic	e4 c5 Nf3 e6 d4 cxd4
B41	Paulsen; Kan Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6
B42	B42	e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Bd3
B42	Polugaevsky Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Bd3 Bc5
B42	Swiss Cheese Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Bd3 g6
B41	Reti Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 c4
B41	Hedgehog Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 c4 g6
B41	Bronstein Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 c4 Nf6 Nc3 Bb4 Bd3 Nc6
B43	B43	e4 c5 Nf3 e6 d4 cxd4 Nxd4 a6 Nc3
B44	Taimanov; Bastrikov, Paulsen Variation, Sicilian; B44	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6
B44	Szen Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nb5
B44	Gary Gambit, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nb5 d6 c4 Nf6 N1c3 a6 Na3 d5
B45	B45	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3
B46	B46	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 a6
B46	Taimanov Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 a6 Be2 Nge7
B45	Paulsen Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Nf6 Ndb5 Bb4
B45	American Attack, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Nf6 Ndb5 Bb4 Nd6+
B47	Bastrikov Variation, Sicilian; B47	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Qc7
B48	B48	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Qc7 Be3
B49	B49	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Qc7 Be3 a6 Be2
B47	Ponomariov Gambit, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nc6 Nc3 Qc7 Ndb5 Qb8 Be3 a6 Bb6
B41	Anderssen; Counterattack Var, Sic	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6
B41	Pin Variation; Sicilian CounterAttack	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Bb4
B41	Jaffe Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Bb4 Bd3 e5
B41	Koch Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Bb4 e5
B45	Four Knights Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6
B45	Cobra Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Nc6 Ndb5 Bc5
B40	Gaw-Paw Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Nf6 Nc3 Qb6
B40	Kveinis Variation, Sicilian	e4 c5 Nf3 e6 d4 cxd4 Nxd4 Qb6
B41	Marshall Variation, Sicilian	e4 c5 Nf3 e6 d4 d5
B27	Brussels Gambit, Sicilian	e4 c5 Nf3 f5
B27	Double-Dutch Gambit, Sicilian	e4 c5 Nf3 f5 exf5 Nh6
B27	Hyperaccelerated Dragon, Sicilian	e4 c5 Nf3 g6
B27	Action Extension, Sicilian	e4 c5 Nf3 g6 c4 Bh6
B27	Hyperaccelerated Pterodactyl, Sic	e4 c5 Nf3 g6 d4 Bg7
B27	Frederico Variation, Sicilian	e4 c5 Nf3 g6 d4 f5
B27	Sicilian Fred	e4 c5 Nf3 g6 d4 f5
B27	Buecker Variation, Sicilian	e4 c5 Nf3 h6
B30	Old Sicilian	e4 c5 Nf3 Nc6
B30	Rossolimo (Nezmetdinov) Variation, Sicilian; B30	e4 c5 Nf3 Nc6 Bb5
B31	B31	e4 c5 Nf3 Nc6 Bb5 g6
B31	Gufeld Gambit, Sicilian	e4 c5 Nf3 Nc6 Bb5 g6 O-O Bg7 c3 e5 d4
B31	Lutikov Gambit, Sicilian	e4 c5 Nf3 Nc6 Bb5 g6 O-O Bg7 c3 Nf6 d4
B31	Gurgenidze Variation, Sicilian	e4 c5 Nf3 Nc6 Bb5 g6 O-O Bg7 Re1 e5 b4
B31	San Francisco Gambit, Sicilian	e4 c5 Nf3 Nc6 Bb5 Na5 b4
B32	B32	e4 c5 Nf3 Nc6 d4
B32	Nimzovich Variation, Sicilian; Nimzo-American Variation	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 d5
B32	Bourdonnais; Lowenthal Var, Sic	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 e5
B32	Kalashnikov Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 e5 Nb5 d6
B34	Accelerated Dragon; Fianchetto Var; B34	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6
B36	Maroczy Bind, Sicilian; B36	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4
B37	B37	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Bg7
B38	B38	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Bg7 Be3
B39	Breyer Variation, Sicilian; B39	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Bg7 Be3 Nf6 Nc3 Ng4
B36	Gurgenidze Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 c4 Nf6 Nc3 Nxd4 Qxd4 d6
B35	B35	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 g6 Nc3 Bg7 Be3 Nf6 Bc4
B33	B33	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6
B33	Four Knights Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3
B33	Lasker-Pelikan Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5
B33	Pelikan Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Ndb5 d6
B33	Chelyabinsk Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Ndb5 d6 Bg5 a6 Na3 b5
B33	Sveshnikov Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Ndb5 d6 Bg5 a6 Na3 b5 Bxf6 gxf6 Nd5 f5
B33	Bird Variation, Siclian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Ndb5 d6 Bg5 a6 Na3 Be6
B32	Retreat Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Nf6 Nc3 e5 Nf3
B32	Godiva Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Qb6
B32	Flohr Variation, Sicilian	e4 c5 Nf3 Nc6 d4 cxd4 Nxd4 Qc7
B29	Nimzovich; Rubinstein Var, Sicilian; B29	e4 c5 Nf3 Nf6
B29	Advance Variation, Sicilian	e4 c5 Nf3 Nf6 e5
B27	Mongoose Variation, Sicilian	e4 c5 Nf3 Qa5
B27	Althouse; Stiletto Variation, Sicilian	e4 c5 Nf3 Qa5
B27	Accelerated Paulsen, Sicilian	e4 c5 Nf3 Qc7
B27	Quinteros Variation, Sicilian	e4 c5 Nf3 Qc7
B20	Brick Variation, Sicilian	e4 c5 Nh3
B10	Caro-Kann Defense; B10	e4 c6
B10	Hillbilly Attack, Caro-Kann	e4 c6 Bc4
B10	Modern; English Variation, Accelerated Panov; Caro-Kann	e4 c6 c4
B10	Breyer Variation, Caro-Kann	e4 c6 d3
B10	Stein Attack, Caro-Kann	e4 c6 d3 d5 Nd2 g6 g3 Bg7 Bg2 e5 Ngf3 Ne7 O-O O-O b4
B12	B12	e4 c6 d4
B12	Landau Gambit, Caro-Kann	e4 c6 d4 d5 Bd3 Nf6 e5 Nfd7 e6
B12	Mieses Gambit, Caro	e4 c6 d4 d5 Be3
B12	Diemer-Duhm Gambit, Caro	e4 c6 d4 d5 c4
B12	Advance Variation, Caro	e4 c6 d4 d5 e5
B12	Prins Attack, Caro-Kann	e4 c6 d4 d5 e5 Bf5 b4
B12	Bayonet Variation, Caro	e4 c6 d4 d5 e5 Bf5 g4
B12	Tal Variation, Caro-Kann	e4 c6 d4 d5 e5 Bf5 h4
B12	Van der Wiel Attack, Caro-Kann	e4 c6 d4 d5 e5 Bf5 Nc3
B12	Dreyev Defense, Caro-Kann	e4 c6 d4 d5 e5 Bf5 Nc3 Qb6
B12	Bronstein Variation, Caro-Kann	e4 c6 d4 d5 e5 Bf5 Ne2
B12	Short Variation, Caro-Kann	e4 c6 d4 d5 e5 Bf5 Nf3
B12	Botvinnik-Carls Defense, Caro-Kann	e4 c6 d4 d5 e5 c5
B13	Exchange Variation, Caro; B13	e4 c6 d4 d5 exd5
B13	Rubinstein Variation, Caro-Kann	e4 c6 d4 d5 exd5 cxd3 Bd3 Nc6 c3 Nf6 Bf4
B13	Panov-Botvinnik; Gunderam Attack	e4 c6 d4 d5 exd5 cxd5 c4
B14	B14	e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3
B14	Carlsbad Line, Caro-Kann	e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 Nc6 Bg5 e6
B14	Czerniak Line, Caro-Kann	e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 Nc6 Bg5 Qa5
B14	Reifir-Spielmann Line, Caro-Kann	e4 c6 d4 d5 exd5 cxd5 c4 Nf6 Nc3 Nc6 Bg5 Qb6
B12	Maroczy Variation, Caro	e4 c6 d4 d5 f3
B12	Fantasy; Lilienfisch Variation, Caro	e4 c6 d4 d5 f3
B12	Maroczy Gambit, Caro-Kann	e4 c6 d4 d5 f3 dxe4 fxe4 e5 Nf3 exd4 Bc4
B15	B15	e4 c6 d4 d5 Nc3
B15	Gurgenidze Variation, Caro	e4 c6 d4 d5 Nc3 b5
B15	Von Hennig Gambit, Caro	e4 c6 d4 d5 Nc3 dxe4 Bc4
B15	Milner-Barry Gambit, Caro; Rasa-Studier Gambit	e4 c6 d4 d5 Nc3 dxe4 f3
B18	Classical Variation, Caro; B18	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5
B19	B19	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 Ng3 Bg6 h4 h6 Nf3
B19	Seirawan Variation, Caro-Kann	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 Ng3 Bg6 h4 h6 Nf3 Nd7 e5 Bh7 Bd3 Bxd3 Qxd3
B18	Flohr Variation, Caro-Kann	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Bf5 Ng3 Bg6 Nh3
B16	Finnish Variation, Caro-Kann	e4 c6 d4 d5 Nc3 dxe4 Nxe4 h6
B17	Karpov Variation, Caro-Kann; B17	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nd7
B17	Smyslov Variation, Caro-Kann	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nd7 Bc4 Ngf6 Ng5 e6 Qe2 Nb6
B17	Tiviakov-Fischer Attack, Caro-Kann	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nd7 Bc4 Ngf6 Nxf6+ Nxf6
B17	Kasparov Attack, Caro-Kann	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nd7 Nf3 Ngf6 Ng3
B17	Ivanchuk Defense, Caro Kann	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nd7 Ng5 Ndf6
B15	Knight Variation, Caro	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6
B15	Tarrasch (Alekhine) Gambit, Caro	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6 Bd3
B15	Tartakower Variation, Caro	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6 Nxf6+ exf6
B15	Forgacs Variation, Caro Kann	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6 Nxf6+ exf6 Bc4
B16	Nimzovich; Bronstein-Larsen, Caro; B16	e4 c6 d4 d5 Nc3 dxe4 Nxe4 Nf6 Nxf6+ gxf6
B15	Gurgenidze System, Caro-Kann	e4 c6 d4 d5 Nc3 g6
B15	Gurgenidze Variation, Caro	e4 c6 d4 d5 Nc3 g6 e5 Bg7 f4 h5
B15	Campomanes Attack, Caro	e4 c6 d4 d5 Nc3 Nf6
B12	Modern Variation, Caro-Kann	e4 c6 d4 d5 Nd2
B12	New Caro-Kann	e4 c6 d4 d5 Nd2 g6
B12	Edinburgh Variation, Caro	e4 c6 d4 d5 Nd2 Qb6
B12	Ulysses Gambit, Caro	e4 c6 d4 d5 Nf3 dxe4 Ng5
B10	Massachussets Defense, Caro-Kann	e4 c6 d4 f5
B12	De Bruycker Defense, Caro	e4 c6 d4 Na6
B10	Masi Variation, Caro-Kann	e4 c6 d4 Nf6
B11	B11	e4 c6 Nc3
B10	Scorpion-Horus Gambit, Caro-Kann	e4 c6 Nc3 d5 d3 dxe4 Bg5
B11	Two Knights Attack, Caro Kann	e4 c6 Nc3 d5 Nf3
B11	Mindeno Variation, Caro-Kann	e4 c6 Nc3 d5 Nf3 Bg4
B11	Retreat Line, Mindeno Variation, Caro-Kann	e4 c6 Nc3 d5 Nf3 Bg4 h3 Bh5
B12	Hector Gambit, Caro	e4 c6 Nc3 d5 Nf3 dxe4 Ng5
B10	Goldman Variation, Caro	e4 c6 Nc3 d5 Qf3
B10	Two Knights Variation, Caro	e4 c6 Nf3 d5 Nc3
B01	Center Counter; Scandanavian; B01	e4 d5
B01	Zilbermints Gambit, Center Counter	e4 d5 b4
B01	Blackbunre-Kloosterboer Gambit, Center Counter	e4 d5 exd5 c6 dxc6 e5
B01	Atkinson (Kloosterboer) Variation, Center Counter	e4 d5 exd5 c6 dxc6 e5
B01	Blackburne Gambit, Center Counter	e4 d5 exd5 c6 dxc6 Nxc6
B01	Boehnke Gambit, Center Counter	e4 d5 exd5 e5
B01	Boehnke Gambit Accepted, Center Counter	e4 d5 exd5 e5 dxe6 Bxe6
B01	Marshall Gambit, Scandanavian G; Modern Variation, CC	e4 d5 exd5 Nf6
B01	Panov Transfer, Center Counter	e4 d5 exd5 Nf6 c4 c6
B01	Icelandic-Palme Gambit, CC	e4 d5 exd5 Nf6 c4 e6
B01	Portuguese Variation, Center Counter	e4 d5 exd5 Nf6 d4 Bg4
B01	Portuguese Gambit, Center Counter	e4 d5 exd5 Nf6 d4 Bg4 f3 Bf5 Bb5+ Nbd7
B01	Kadas Gambit, Center Counter	e4 d5 exd5 Nf6 d4 c6 dxc6 e5
B01	Wing Gambit, Center Counter	e4 d5 exd5 Nf6 d4 g6 c4 b5
B01	Marshall Variation, Center Counter	e4 d5 exd5 Nf6 d4 Nxd5
B01	Kiel Variation, Center Counter	e4 d5 exd5 Nf6 d4 Nxd5 c4 Nb4
B01	Tomalty Gambit, Center Counter	e4 d5 exd5 Nf6 d4 Nxd5 c4 Nf6 Nc3 c5
B01	Gipslis Variation, Center Counter	e4 d5 exd5 Nf6 d4 Nxd5 Nf3 Bg4
B01	Richter Variation, Center Counter	e4 d5 exd5 Nf6 d4 Nxd5 Nf3 g6
B01	Mieses-Kotroc Variation, Center Counter	e4 d5 exd5 Qxd5
B01	Leonhardt (Rosen) Gambit, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qa5 b4
B01	Anderssen Variation, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qa5 d4 e5
B01	Collijn Variation, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qa5 d4 e5 Nf3 Bg4
B01	Mieses Variation, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qa5 d4 Nf6
B01	Gruenfeld Variation, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qa5 d4 Nf6 Nf3 Bf5 Ne5 c6 g4
B01	Lasker Variation, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qa5 d4 Nf6 Nf3 Bg4 h3
B01	Gubinsky-Melts Defense, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qd6
B01	Schiller-Pytel Variation, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qd6 d4 c6
B01	Bronstein Variation, Center Counter	e4 d5 exd5 Qxd5 Nc3 Qd6 d4 Nf6 Nf3 a6
B01	Closed Scandavian	e4 d5 Nc3
B07	B07	e4 d6
B07	Maroczy Defense, Pirc	e4 d6 d4 e5
B07	Philidor Gambit, Pirc	e4 d6 d4 e5 dxe5 Bd7
B07	Small Center Defense	e4 d6 d4 e6
B07	Balogh Defense, Pirc	e4 d6 d4 f5
B07	Pirc Defense	e4 d6 d4 Nf6
B07	Lion’s Jaw, Pirc	e4 d6 d4 Nf6 f3
B07	Czech Defense	e4 d6 d4 Nf6 Nc3 c6
B07	Pirc; Ufimtsev; Antal Defense	e4 d6 d4 Nf6 Nc3 g6
B07	Kholmov System, Pirc	e4 d6 d4 Nf6 Nc3 g6 Bc4
B07	Classical System, Pirc	e4 d6 d4 Nf6 Nc3 g6 Be2
B07	Chinese Variation, Pirc	e4 d6 d4 Nf6 Nc3 g6 Be2 Bg7 g4
B07	Bayonet Attack, Pirc	e4 d6 d4 Nf6 Nc3 g6 Be2 Bg7 h4
B07	Sveshnikov-Jansa Attack, Pirc	e4 d6 d4 Nf6 Nc3 g6 Be3 c6 h3
B07	150 Attack	e4 d6 d4 Nf6 Nc3 g6 Be3 c6 Qd2
B07	Panov; Opatijav; Byrne Variation, Pirc	e4 d6 d4 Nf6 Nc3 g6 Bg5
B09	Austrian Attack, Pirc; B09	e4 d6 d4 Nf6 Nc3 g6 f4
B09	Ljubojevic Variation, Pirc	e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Bc4
B09	Austrian; Yugoslav Defense, Pirc	e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3
B09	Dragon Formation, Pirc	e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 c5
B09	Weiss Variation, Pirc	e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 O-O Bd3
B09	Kurajica Variation, Pirc	e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 O-O Be3
B09	Unzicker Attack, Pirc	e4 d6 d4 Nf6 Nc3 g6 f4 Bg7 Nf3 O-O e5
B08	B08	e4 d6 d4 Nf6 Nc3 g6 Nf3
B08	Two Knights System, Pirc	e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7
B08	Quiet System, Pirc	e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7 Be2
B08	Parma Defense, Pirc	e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7 Be2 O-O O-O Bg4
B08	Czech Defense, Pirc	e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7 Be2 O-O O-O c6
B08	Chigorin Line, Pirc	e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7 Be2 O-O O-O Nc6
B08	Schlechter Variation, Pirc	e4 d6 d4 Nf6 Nc3 g6 Nf3 Bg7 h3
B07	Anti-Philidor	e4 d6 d4 Nf6 Nc3 Nbd7 f4
B07	Roscher Gambit, Pirc	e4 d6 d4 Nf6 Nf3
C20	King Pawn Game; C20	e4 e5
C20	Mengarini Opening	e4 e5 a3
C20	Portuguese Opening	e4 e5 Bb5
C20	Miguel Gambit	e4 e5 Bb5 Bc5 b4
C23	Bishop’s Opening; C23	e4 e5 Bc4
C23	Anderssen Gambit	e4 e5 Bc4 b5 Bxb5 c6
C23	Thorold Gambit	e4 e5 Bc4 b5 Bxb5 f5
C23	Classical Variation, Bishop; Boi Variation	e4 e5 Bc4 Bc5
C23	MacDonnell Gambit, Bishop	e4 e5 Bc4 Bc5 b4
C23	Labourdonnais-Denker Gambit, Bishop	e4 e5 Bc4 Bc5 b4 Bxb4 c3
C23	McDonnell Double Gambit, Bishop	e4 e5 Bc4 Bc5 b4 Bxb4 f4
C23	Philidor Variation, Bishop	e4 e5 Bc4 Bc5 c3
C23	Lewis Counter-Gambit, Bishop	e4 e5 Bc4 Bc5 c3 d5
C23	Lewis Countergambit, Bishop	e4 e5 Bc4 Bc5 c3 d5 Bxd5 Nf6
C23	Walker Variation, Bishop	e4 e5 Bc4 Bc5 c3 d5 Bxd5 Nf6 d4
C23	Lewis Gambit, Bishop	e4 e5 Bc4 Bc5 d4
C23	Stein Gambit, Bishop	e4 e5 Bc4 Bc5 f4
C23	Lopez Variation, Bishop	e4 e5 Bc4 Bc5 Qe2
C23	Lopez Gambit, Bishop	e4 e5 Bc4 Bc5 Qe2 Nf6 f4
C23	Khan Gambit, Bishop	e4 e5 Bc4 d5
C23	King’s Gambit Reversed, Bishop	e4 e5 Bc4 f5
C23	Calabrese Counter-Gambit	e4 e5 Bc4 f5
C24	Berlin Defense, Bishop; C24	e4 e5 Bc4 Nf6
C24	Spielmann Attack, Bishop	e4 e5 Bc4 Nf6 d3 Bc5 Nc3
C24	Kitchner Folly, Bishop	e4 e5 Bc4 Nf6 d3 Be7 Nf3 O-O
C24	Vienna Hybrid, Bishop	e4 e5 Bc4 Nf6 d3 Nc6 Nc3
C24	Hromadka Variation, Bishop	e4 e5 Bc4 Nf6 d3 Nc6 Nc3 Bb4 Ne2
C24	Ponziani Center Gambit, Bishop	e4 e5 Bc4 Nf6 d4
C24	Warsaw Gambit, Bishop	e4 e5 Bc4 Nf6 d4 exd4 c3
C24	Urusov; Ouroussoff; Keidansky G	e4 e5 Bc4 Nf6 d4 exd4 Nf3
C24	Keidansky Gambit, Bishop	e4 e5 Bc4 Nf6 d4 exd4 Nf3 Nxe4 Qxd4
C23	Kreijcik Gambit, Bishop	e4 e5 Bc4 Nf6 f3 Bc5 Ne2 Nc6 b4
C23	Greco Gambit, Bishop	e4 e5 Bc4 Nf6 f4
C23	Horwitz Gambit, Bishop	e4 e5 Bc4 Nf6 Nc3 b5
C23	Blanel Gambit, Bishop	e4 e5 Bc4 Nf6 Nc3 Nxe4
C23	Paschmann Gambit, Bishop	e4 e5 Bc4 Nf6 Ne2 Nxe4 Nec3
C20	Tortoise Opening	e4 e5 Bd3
C20	Macleod Attack	e4 e5 c3
C20	Norwalder Gambit	e4 e5 c3 d5 Qh5 Bd6
C20	Lasa Gambit	e4 e5 c3 f5
C20	Whale Opening	e4 e5 c4
C20	Bavarian Gambit	e4 e5 c4 d5
C20	Clam Variation; Leonardis Variation	e4 e5 d3
C20	Indian Opening	e4 e5 d3
C20	Weber Gambit	e4 e5 d3 d5 exd5 c6 dxc6 Nxc6
C20	King’s Gambit Reversed	e4 e5 d3 f5
C20	Radisch Gambit	e4 e5 d3 Nf6 f4 Bc5
C21	Center Game; C21	e4 e5 d4
C21	Beyer Gambit	e4 e5 d4 d5
C21	Philidor Gambit	e4 e5 d4 d6 dxe5 Bd7
C21	Center Game Accepted	e4 e5 d4 exd4
C21	Von der Lasa Gambit	e4 e5 d4 exd4 Bc4
C21	Ross Gambit, Center	e4 e5 d4 exd4 Bd3
C21	Danish Gambit	e4 e5 d4 exd4 c3
C21	Sorensen Defense, Center	e4 e5 d4 exd4 c3 d5
C21	Danish Gambit Accepted	e4 e5 d4 exd4 c3 dxc3 Bc4 cxb2 Bxb2
C21	Copenhagen Defense, Danish Gambit	e4 e5 d4 exd4 c3 dxc3 Bc4 cxb2 Bxb2 Bb4+
C21	Schlechter Defense, Center	e4 e5 d4 exd4 c3 dxc3 Bc4 cxb2 Bxb2 d5
C21	Classical Defense, Danish Gambit	e4 e5 d4 exd4 c3 dxc3 Bc4 cxb2 Bxb2 Nf6
C21	Chigorin Defense, Danish Gambit	e4 e5 d4 exd4 c3 dxc3 Bc4 cxb2 Bxb2 Qe7
C21	Svenonius Defense, Center	e4 e5 d4 exd4 c3 Ne7
C21	Halasz-McDonnell Gambit	e4 e5 d4 exd4 f4
C21	Crocodile Variation, Center Game	e4 e5 d4 exd4 f4 Bc5 Nf3 Nc6 c3
C21	Lanc-Arnold Gambit, Center	e4 e5 d4 exd4 Nf3 Bc5 c3
C21	Scippler Gambit, Center	e4 e5 d4 exd4 Nf3 Bc5 c3 dxc3 Bc4
C22	C22	e4 e5 d4 exd4 Qxd4
C22	Hall Variation, Center	e4 e5 d4 exd4 Qxd4 Nc6 Qc4
C22	Paulsen Attack Variation, Center	e4 e5 d4 exd4 Qxd4 Nc6 Qe3
C22	Berger Variation, Center	e4 e5 d4 exd4 Qxd4 Nc6 Qe3 Nf6
C22	Kupreichik Variation, Center	e4 e5 d4 exd4 Qxd4 Nc6 Qe3 Nf6 Nc3 Bb4 Bd2 O-O O-O-O Re8 Bc4
C20	King’s Head	e4 e5 f3
C20	Walkerling	e4 e5 f3 Nf6
C20	Krejcik Gambit	e4 e5 f3 Nf6 Bc4 Bc5 Ne2 Nc6 b4
C20	King’s Head Opening	e4 e5 f3 Nf6 Nc3
C30	King’s Gambit; C30	e4 e5 f4
C30	Classical Defense, KGD	e4 e5 f4 Bc5
C30	Heath Variation, KGD; Rotlewi Countergambit	e4 e5 f4 Bc5 Nf3 d6 b4
C30	Marshall (Euwe) Attack, KGD	e4 e5 f4 Bc5 Nf3 d6 c3 Bg4 fxe5 dxe5 Qa4+
C30	Rubinstein Countergambit, KGD	e4 e5 f4 Bc5 Nf3 d6 c3 f5
C30	Svenonius Variation, KGD	e4 e5 f4 Bc5 Nf3 d6 Nc3 Nf6 Bc4 Nc6 d3 Bg4
C30	Senechaud Counter-Gambit, KGD	e4 e5 f4 Bc5 Nf3 g5
C30	Mafia Defense, KGD	e4 e5 f4 c5
C31	Falkbeer Counter-Gambit, KGD; C31	e4 e5 f4 d5
C31	Hinrichsen Gambit, KGD	e4 e5 f4 d5 d4
C31	Falkbeer Countergambit Accepted, KGD	e4 e5 f4 d5 exd5
C31	Miles Gambit, KGD	e4 e5 f4 d5 exd5 Bc5
C31	Nimzovich-Marshall Variation, KGD	e4 e5 f4 d5 exd5 c6
C31	Marshall C-G, KGD	e4 e5 f4 d5 exd5 c6
C31	Pickler Gambit, KGD	e4 e5 f4 d5 exd5 c6 dxc6 Bc5
C32	Staunton Line, KGD; C32	e4 e5 f4 d5 exd5 e4
C31	Nimzovich Variation, KGD; Anderssen Attack	e4 e5 f4 d5 exd5 e4 Bb5+
C32	Reti (Charousek) Variation, KGD	e4 e5 f4 d5 exd5 e4 d3
C32	Morphy Defense, KGD	e4 e5 f4 d5 exd5 e4 d3 Nf6 Nc3 Bb4 Bd2 e3
C32	Keres Variation, KGD	e4 e5 f4 d5 exd5 e4 d3 Nf6 Nd2
C32	Old Line, Falkbeer Countergambit, KGD	e4 e5 f4 d5 exd5 e4 d3 Nf6 Qe2
C32	Modern Transfer, Falkbeer Countergambit, KGD	e4 e5 f4 d5 exd5 exf4
C31	Blackbunre Attack, KGD	e4 e5 f4 d5 Nf3
C33	King’s Gambit Accepted; C33	e4 e5 f4 exf4
C33	Orsini Gambit, KGA	e4 e5 f4 exf4 b3
C33	Schurig Gambit, KGA	e4 e5 f4 exf4 Bb5
C33	Bishop’s Gambit, KGA	e4 e5 f4 exf4 Bc4
C33	Kieseritzky Gambit, Bishop’s Gambit, KGA	e4 e5 f4 exf4 Bc4 b5
C33	Lopez Defense, KGA	e4 e5 f4 exf4 Bc4 c6
C33	Bledow; Morphy Defense, KGA	e4 e5 f4 exf4 Bc4 d5
C33	Bledow Countergambit, KGA	e4 e5 f4 exf4 Bc4 d5 Bxd5 Nf6
C33	Gianutio Counter-Gambit, KGA	e4 e5 f4 exf4 Bc4 f5
C33	Anderssen Defense, KGA	e4 e5 f4 exf4 Bc4 g5
C33	Maurian Defense, KGA	e4 e5 f4 exf4 Bc4 Nc6
C33	Cozio; Hanneken; Prussian; Lichtenhein	e4 e5 f4 exf4 Bc4 Nf6
C33	Bogoljubow Variation, KGA	e4 e5 f4 exf4 Bc4 Nf6 Nc3
C33	Bogoljubov; Jaenisch Variation, KGA	e4 e5 f4 exf4 Bc4 Nf6 Nc3 c6
C33	Bryan; Kieseritzky Gambit, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 b5
C33	Greco Variation, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 Bc5
C33	Cozio Variation, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 d6
C33	Classical Defense, KGA; Lopez Variation	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5
C33	Grimm Attack, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 d4 d6 e5
C33	MacDonnell Attack, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 d4 Ne7 g3
C33	McDonnell Attack, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 g3
C33	Fraser Variation, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Nc3 Bg7 g3 fxg3 Qf3
C33	Cozio Attack, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 g5 Qf3
C33	Boden Variation, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 Nc6
C33	Jaenisch Variation, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 Nf6
C33	Jaenisch Variation, KGA	e4 e5 f4 exf4 Bc4 Qh4+ Kf1 Qf6
C33	Lesser Bishop; Tartakower	e4 e5 f4 exf4 Be2
C33	Weiss Defense, KGA	e4 e5 f4 exf4 Be2 f5 exf5 d6
C33	Central; Polerio; Willemson, Steinitz	e4 e5 f4 exf4 d4
C33	Gaga Gambit, KGA	e4 e5 f4 exf4 g3
C33	Gama Gambit, KGA	e4 e5 f4 exf4 g3 fxg3 Nf3
C33	Leonardo (Stamma) Gambit, KGA	e4 e5 f4 exf4 h4
C33	Drunken King, KGA	e4 e5 f4 exf4 Kf2
C33	Tumbleweed; King’s Own, KGA	e4 e5 f4 exf4 Kf2
C33	Keres, Mason, Parnu, Requena	e4 e5 f4 exf4 Nc3
C33	Requena Gambit, KGA	e4 e5 f4 exf4 Nc3 Qh4+
C33	Paris Gambit, KGA	e4 e5 f4 exf4 Ne2
C34	King’s Knight Gambit, KGA; C34	e4 e5 f4 exf4 Nf3
C35	Cunningham Gambit, KGA; C35	e4 e5 f4 exf4 Nf3 Be7
C35	Wild Cunningham Gambit, KGA	e4 e5 f4 exf4 Nf3 Be7 Bc4 Bh4+
C35	Bertin; Three Pawns Gambit, KGA	e4 e5 f4 exf4 Nf3 Be7 Bc4 Bh4+ g3
C35	Neo-Cunningham Gambit, KGA; McCormick Defense	e4 e5 f4 exf4 Nf3 Be7 Bc4 Nf6
C36	Scandinavian Variation, KGA; Modern Defense, KGA; C36	e4 e5 f4 exf4 Nf3 d5
C36	Abbazia Defense, KGA	e4 e5 f4 exf4 Nf3 d5 exd5 Nf6
C34	Fischer Defense, KGA	e4 e5 f4 exf4 Nf3 d6
C34	Schulder Gambit, KGA	e4 e5 f4 exf4 Nf3 d6 b4
C34	Gianutio Countergambit, KGA	e4 e5 f4 exf4 Nf3 f5
C37	C37	e4 e5 f4 exf4 Nf3 g5
C37	Ghulam Kassim; Koch Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4
C38	Traditional Variation, KGA; C38	e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7
C38	Mayet Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 d4 d6 c3
C38	Philidor Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 h4
C38	Greco Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 h4 h6 d4 d6
C38	Greco; Calabrian Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 h4 h6 d4 d6 hxg5 hxg5 Rxh8 Rxh8 Nc3
C38	Schultz Variation, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 h4 h6 d4 d6 Qd3
C38	Hanstein Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 Bg7 O-O
C37	Middleton Counter-Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 d6 O-O Bg4 h3 h5 hxg4
C37	Greco-Lolli; Wild Muzio Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Bxf7+
C37	Young Variation, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Bxf7+ Kxf7 O-O gxf3 Qxf3 Qf6 d4 Qxd4+ Be3
C37	Koch; Ghulam Kassim Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 d4
C37	Kotov Gambit	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 d4 gxf3 Bxf4
C37	Ghulam-Kassim Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 d4 gxf3 Qxf3
C37	Australian Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 h4
C37	MacDonnell Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Nc3
C37	Salvio Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5
C37	Cochrane Variation, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 f3
C37	Herzfeld; Portuguese; Vienna, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 Nc6
C37	Santa Maria Defense, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 Nf6
C37	Silberschmidt Variation, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 Nh6
C37	Anderssen Counter-Attack, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 Ne5 Qh4+ Kf1 Nh6 d4 d6
C37	Muzio-Polerio Gambit, KGA; Wild Muzio	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O
C37	Brentano Defense, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O d5
C37	Holloway Defense, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Nc6
C37	From Defense, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qe7
C37	Sarratt Defense, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qf6
C37	Young Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qf6 Bxf7+ Kxf7 d4 Qxd4+ Be3 Qf6
C37	Double Muzio Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qf6 e5 Qxe5 Bxf7+
C37	Paulsen Defense, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qf6 e5 Qxe5 d3 Bh6 Nc3 Ne7 Bd2
C37	Bello Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qf6 Nc3
C37	Baldwin Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O gxf3 Qxf3 Qf6 Nc3 Qd4+ Kh1 Qxc4 Nd5
C37	Kling & Horwitz Counter-Attack, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 g4 O-O Qe7
C37	Blachy Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 Bc4 Nc6
C37	Rosentreter Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 d4
C37	Soerensen Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 d4 Bg4 Nc3
C37	Sorensen Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 d4 Bg4 Ne5
C37	Bird Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 d4 Bg4 Ne5 Qh4+ g3
C37	Rosentreter-Testa Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 d4 g4 Bxf4
C39	C39	e4 e5 f4 exf4 Nf3 g5 h4
C39	Kieseritzky Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5
C39	Paulsen Defense, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Bg7
C39	Campbell; Brentano; Morphy Var, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 d5
C39	Green; Kolisch Variation, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 d6
C39	Long Whip Variation, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 h5
C39	Cotter Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 h6 Nxf7
C39	Neumann Defense, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nc6
C39	Berlin Defense, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6
C39	Anderssen Defense, Kieseritsky Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Bc4 d5 exd5 Bd6
C39	Anderssen-Cordel Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Bc4 d5 exd5 Bd6 d4 Nh5 Bxf4 Nxf4
C39	Rice Gambit, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Bc4 d5 exd5 Bd6 O-O
C39	Rice Gambit Accepted, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Bc4 d5 exd5 Bd6 O-O Bxe5
C39	Paulsen Defense Deferred, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Bc4 d5 exd5 Bg7
C39	Rubinstein Variation, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 d4
C39	Riviere Variation, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Nf6 Nxg4 d5
C39	Rosenthal; Stockwhip Var, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ne5 Qe7
C39	Allgaier; Cotter Cambit, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5
C39	Walker (Urusov) Attack, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 Bc4+
C39	Urusov Attack, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 Bc4+ d5 Bxd5+ Ke8 d4
C39	Thorold Attack, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 d4
C39	Horny Defense, KGA	e4 e5 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 Qxg4 Nf6 Qxf4
C37	Quaade; Taylor Variation, KGA	e4 e5 f4 exf4 Nf3 g5 Nc3
C34	Becker; Anti-Kieseritzky Var, KGA	e4 e5 f4 exf4 Nf3 h6
C34	MacLeod Defense, KGA	e4 e5 f4 exf4 Nf3 Nc6
C34	Bonsch-Osmolovsky Variation, KGA	e4 e5 f4 exf4 Nf3 Ne7
C34	Schallop Defense, KGA	e4 e5 f4 exf4 Nf3 Nf6
C34	Tashkent Attack, KGA	e4 e5 f4 exf4 Nf3 Nf6 e5 Nh5 g4
C33	Eisenberg Variation, KGA	e4 e5 f4 exf4 Nh3
C33	Basman Gambit, KGA	e4 e5 f4 exf4 Qe2
C33	Bilguer-Mirage Variation, KGA	e4 e5 f4 exf4 Qe2
C33	Breyer; Hungarian; Carrera, KGA	e4 e5 f4 exf4 Qf3
C33	Dodo Gambit, KGA	e4 e5 f4 exf4 Qg4
C33	Carrera Gambit, KGA	e4 e5 f4 exf4 Qh5
C30	Panteldakis Countergambit, KGD	e4 e5 f4 f5
C30	Soller-Zilbermints Gambit, KGD	e4 e5 f4 f6 fxe5 Nc6
C30	Zilbermints Double Countergambit; KGD	e4 e5 f4 g5
C30	Queen’s Knight Defense, KGD	e4 e5 f4 Nc6
C30	Miles Defense, KGD	e4 e5 f4 Nc6 Nf3 f5
C30	Zilbermints Double Gambit I, KGD	e4 e5 f4 Nc6 Nf3 g5
C30	Petrov’s Defense, KGD	e4 e5 f4 Nf6
C30	Norwalde (Norwalder) Variation, KGD	e4 e5 f4 Qf6
C30	Schubert Variation, KGD	e4 e5 f4 Qf6 Nc3 Qxf4 d4
C30	Keene Defense, KGD	e4 e5 f4 Qh4+ g3 Qe7
C25	Vienna; Hamppe Opening; C25	e4 e5 Nc3
C25	Zhuravlev Counter-Gambit, Vienna	e4 e5 Nc3 Bb4 Qg4
C25	Zhuraviev Countergambit, Vienna	e4 e5 Nc3 Bb4 Qg4 Nf6
C25	Anderssen Defense, Vienna	e4 e5 Nc3 Bc5
C25	Hamppe-Mietner Variation, Vienna	e4 e5 Nc3 Bc5 Na4
C25	Giraffe Attack, Vienna	e4 e5 Nc3 Bc5 Qg4
C25	Omaha Gambit, Vienna	e4 e5 Nc3 d6 f4
C23	Meitner-Mieses Gambit, Vienna	e4 e5 Nc3 Nc6 Bc4 Bc5 Qg4 Qf6 Nd5
C23	Bronstein Gambit, Vienna	e4 e5 Nc3 Nc6 Bc4 Nf6 f4 Nxe4 Nf3
C25	Fyfe Gambit, Vienna	e4 e5 Nc3 Nc6 d4
C25	Philidor Countergambit, Vienna	e4 e5 Nc3 Nc6 d4 f5
C25	Alapin Variation, Vienna	e4 e5 Nc3 Nc6 f4
C25	Vienna Gambit	e4 e5 Nc3 Nc6 f4
C25	Quelle Gambit, Vienna	e4 e5 Nc3 Nc6 f4 Bc5 fxe5 d6
C25	Steinitz Gambit, Vienna	e4 e5 Nc3 Nc6 f4 exf4 d4
C25	Fraser-Minckwitz Variation, Vienna	e4 e5 Nc3 Nc6 f4 exf4 d4 Qh4+ Ke2 b6
C25	Zukertort Defense, Vienna	e4 e5 Nc3 Nc6 f4 exf4 d4 Qh4+ Ke2 d5
C25	Paulsen Defense, Vienna	e4 e5 Nc3 Nc6 f4 exf4 d4 Qh4+ Ke2 d6
C25	Soerensen Defense, Vienna	e4 e5 Nc3 Nc6 f4 exf4 d4 Qh4+ Ke2 g5
C25	Knight Variation, Vienna	e4 e5 Nc3 Nc6 f4 exf4 Nf3
C25	Cunningham Defense, Vienna	e4 e5 Nc3 Nc6 f4 exf4 Nf3 Be7
C25	Hamppe-Muzio Gambit, Vienna	e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 Bc4 g4 O-O
C25	Pierce Gambit, Vienna	e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 d4
C25	Hamppe-Allgaier Gambit, Vienna	e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 h4 g4 Ng5
C25	Hamppe-Allgaier-Thorold Gambit	e4 e5 Nc3 Nc6 f4 exf4 Nf3 g5 h4 g4 Ng5 h6 Nxf7 Kxf7 d4
C25	Paulsen Variation, Vienna	e4 e5 Nc3 Nc6 g3
C25	Mariotti Gambit	e4 e5 Nc3 Nc6 g3 Bc5 Bg2 h5 Nf3 h4
C26	Falkbeer Variation, Vienna; C26	e4 e5 Nc3 Nf6
C26	Mengarini Variation, Vienna	e4 e5 Nc3 Nf6 a3
C27	Stanley Variation, Vienna; C27	e4 e5 Nc3 Nf6 Bc4
C27	Reversed Spanish, Vienna	e4 e5 Nc3 Nf6 Bc4 Bb4
C27	Bishop Variation, Vienna	e4 e5 Nc3 Nf6 Bc4 Bc5
C27	Eifel Gambit, Vienna	e4 e5 Nc3 Nf6 Bc4 Bc5 Nge2 b5
C28	Three Knights Variation, Vienna; C28	e4 e5 Nc3 Nf6 Bc4 Nc6
C27	Modern Variation, Vienna	e4 e5 Nc3 Nf6 Bc4 Nxe4
C27	Boden-Kieseritzky Gambit, Vienna	e4 e5 Nc3 Nf6 Bc4 Nxe4 Nf3
C27	Monster Variation, Vienna	e4 e5 Nc3 Nf6 Bc4 Nxe4 Qh5 Nd6 Bb3 Be7
C27	Alekhine Variation, Vienna	e4 e5 Nc3 Nf6 Bc4 Nxe4 Qh5 Nd6 Bb3 Be7 Nf3 Nc6 Nxe5
C27	Adams Gambit, Vienna	e4 e5 Nc3 Nf6 Bc4 Nxe4 Qh5 Nd6 Bb3 Nc6 d4
C27	Frankenstein-Dracula Var, Vienna	e4 e5 Nc3 Nf6 Bc4 Nxe4 Qh5 Nd6 Bb3 Nc6 Nb5 g6 Qf3 f5 Qd5 Qe7
C29	Vienna Gambit, Vienna; C29	e4 e5 Nc3 Nf6 f4
C29	Steinitz Variation, Vienna	e4 e5 Nc3 Nf6 f4 d5 d3
C26	Oxford Variation, Vienna	e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 d3
C29	Wurzburger Trap, Vienna	e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 d3 Qh4 g3 Nxg3 Nf3 Qh5 Nd5 Bxd5 Nf4
C29	Breyer Variation, Vienna	e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Nf3 Be7
C29	Kaufmann Variation, Vienna	e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Nf3 Bg4 Qe2
C29	Paulsen Attack, Vienna	e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Qf3
C29	Bardeleben Variation, Vienna	e4 e5 Nc3 Nf6 f4 d5 fxe5 Nxe4 Qf3 f5
C26	Mieses Variation, Vienna	e4 e5 Nc3 Nf6 g3
C25	Polluck Gambit, Vienna	e4 e5 Nc3 Nf6 g3 Bc5 Bg2 Nc6 Nge2 d5 exd5
C25	Erben Gambit, Vienna	e4 e5 Nc3 Nf6 g3 d5 exd5 c6
C20	Alapin Opening	e4 e5 Ne2
C40	King’s Knight Opening; C40	e4 e5 Nf3
C40	Glatz Gambit; Busch-Gass Gambit	e4 e5 Nf3 Bc5
C25	Hamppe Meitner, Vienna	e4 e5 Nf3 Bc5 Na4
C40	Chiodini Gambit	e4 e5 Nf3 Bc5 Nxe5 Nc6
C40	Jalalabad Defense	e4 e5 Nf3 c5
C40	Gunderam Gambit	e4 e5 Nf3 c6
C40	Queen’s Pawn Counter-Gambit; Elephant Gambit	e4 e5 Nf3 d5
C40	Maroczy; Elephant Gambit	e4 e5 Nf3 d5 exd5 Bd6
C40	Halasz-Jacobsen Gambit	e4 e5 Nf3 d5 exd5 Bd6
C40	Maroczy Gambit	e4 e5 Nf3 d5 exd5 Bd6
C40	Paulsen Counter-Gambit	e4 e5 Nf3 d5 exd5 e4
C40	Wasp Variation	e4 e5 Nf3 d5 Nxe5 dxe4 Bc4 Qg5
C41	Philidor Defense; C41	e4 e5 Nf3 d6
C41	Lopez Counter-Gambit, Philidor	e4 e5 Nf3 d6 Bc4 f5
C41	Philidor Gambit	e4 e5 Nf3 d6 d4 Bd7
C41	Alapin-Blackburne Gambit, Philidor	e4 e5 Nf3 d6 d4 Bg4 dxe5 Nd7
C41	Exchange Variation, Philidor	e4 e5 Nf3 d6 d4 exd4
C41	Morphy Gambit, Philidor	e4 e5 Nf3 d6 d4 exd4 Bc4
C41	Bird Gambit, Philidor	e4 e5 Nf3 d6 d4 exd4 c3
C41	Paulsen Attack, Philidor	e4 e5 Nf3 d6 d4 exd4 Nxd4 d5 exd5
C41	Larsen Variation, Philidor	e4 e5 Nf3 d6 d4 exd4 Nxd4 g6
C41	Boden Variation, Philidor	e4 e5 Nf3 d6 d4 exd4 Qxd4 Bd7
C41	Philidor Counter Attack	e4 e5 Nf3 d6 d4 f5
C41	Zukertort Variation, Philidor	e4 e5 Nf3 d6 d4 f5 Nc3
C41	Hanham; Lord Variation, Philidor	e4 e5 Nf3 d6 d4 Nd7
C41	Delmar Variation, Philidor	e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 c3
C41	Schlechter Variation, Philidor	e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 Nc3
C41	Krause Variation, Philidor	e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 O-O
C41	Steiner Variation, Philidor	e4 e5 Nf3 d6 d4 Nd7 Bc4 c6 O-O Be7 dxe5
C41	Sharp Variation, Philidor	e4 e5 Nf3 d6 d4 Nd7 Bc4 Nb6
C41	Lion Variation, Philidor	e4 e5 Nf3 d6 d4 Nd7 Nc3 Nf6
C41	Jaenisch Counter-Attack, Philidor; Nimzovich Variation	e4 e5 Nf3 d6 d4 Nf6
C41	Klein Variation, Philidor	e4 e5 Nf3 d6 d4 Nf6 Bc4
C41	Sokolsky Variation, Philidor	e4 e5 Nf3 d6 d4 Nf6 dxe5 Nxe4 Nbd2
C41	Rellstab Variation, Philidor	e4 e5 Nf3 d6 d4 Nf6 dxe5 Nxe4 Qd5
C41	Larobok Variation, Philidor	e4 e5 Nf3 d6 d4 Nf6 Nc3 Nbd7
C41	Locock Variation, Philidor	e4 e5 Nf3 d6 d4 Nf6 Ng5 h6 Nxf7
C40	Latvian; Greco Counter-Gambit	e4 e5 Nf3 f5
C40	Senechaud Gambit, Latvian	e4 e5 Nf3 f5 b4
C40	Mayet Attack, Latvian	e4 e5 Nf3 f5 Bc4
C40	Strautins Gambit, Latvian	e4 e5 Nf3 f5 Bc4 b5
C40	Polerio-Svedenborg Variation, Latvian	e4 e5 Nf3 f5 Bc4 fxe4 Nxe5 d5
C40	Poisoned Pawn Variation, Latvian	e4 e5 Nf3 f5 Bc4 fxe4 Nxe5 Qg5 d4 Qxg2
C40	Duke of Courland Variation, Latvian	e4 e5 Nf3 f5 Bc4 fxe4 Nxe5 Qg5 d4 Qxg2 Qh5 g6 Bf7 Kd8 Bg6 Qh1
C40	Morgado Defense, Latvian	e4 e5 Nf3 f5 Bc4 Nf6
C40	Diepstraten Countergambit, Latvian	e4 e5 Nf3 f5 c4
C40	Clam Gambit, Latvian	e4 e5 Nf3 f5 d3 Nc6 exf5
C40	Mason Countergambit, Latvian	e4 e5 Nf3 f5 d4
C40	Latvian Gambit Accepted	e4 e5 Nf3 f5 exf5
C40	Lobster Gambit, Latvian	e4 e5 Nf3 f5 g4
C40	Mlotkowski Variation, Latvian	e4 e5 Nf3 f5 Nc3
C40	Fraser Defense, Latvian	e4 e5 Nf3 f5 Nxe5 Nc6
C40	Corkscrew Counter-Gambit, Latvian	e4 e5 Nf3 f5 Nxe5 Nf6 Bc4 fxe4 Nf7 Qe7 Nxh8 d5
C40	Greco Variation, Latvian	e4 e5 Nf3 f5 Nxe5 Qe7
C40	Mail Line, Latvian Gambit Accepted	e4 e5 Nf3 f5 Nxe5 Qf6 d4
C40	Bilguer Variation, Latvian	e4 e5 Nf3 f5 Nxe5 Qf6 d4 d6 Nc4
C40	Bronstein Attack, Latvian	e4 e5 Nf3 f5 Nxe5 Qf6 d4 d6 Nc4 fxe4 Be2
C40	Nimzovich Attack, Latvian	e4 e5 Nf3 f5 Nxe5 Qf6 d4 d6 Nc4 fxe4 Ne3
C40	Bronstein Gambit, Latvian	e4 e5 Nf3 f5 Nxe5 Qf6 d4 d6 Nc4 fxe4 Qh5+ g6 Qe2
C40	Foltys-Leonhardt Variation, Latvian Gambit	e4 e5 Nf3 f5 Nxe5 Qf6 Nc4
C40	Foltys Variation, Latvian	e4 e5 Nf3 f5 Nxe5 Qf6 Nc4 fxe4 d3
C40	Leonhardt Variation, Latvian	e4 e5 Nf3 f5 Nxe5 Qf6 Nc4 fxe4 Nc3
C40	Damiano Defense	e4 e5 Nf3 f6
C40	Damiano Gambit	e4 e5 Nf3 f6 Nxe5 fxe5 Qh5+ g6 Qxe5+ Qe7 Qxh8
C40	Chigorin Gambit, Damiano	e4 e5 Nf3 f6 Nxe5 Qe7 Nf3 d5
C44	C44	e4 e5 Nf3 Nc6
C44	Paschman Wing Gambit	e4 e5 Nf3 Nc6 b4
C60	Ruy Lopez; Spanish Opening; C60	e4 e5 Nf3 Nc6 Bb5
C60	Bulgarian Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a5
C68	Morphy Defense, Ruy Lopez; C68	e4 e5 Nf3 Nc6 Bb5 a6
C70	Morphy Defense, Ruy Lopez; C70	e4 e5 Nf3 Nc6 Bb5 a6 Ba4
C70	Caro Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 b5
C70	Graz Variation, Ruy	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 b5 Bb3 Bc5
C70	Furman-Taimanov; Wing Var, Ruy; Norwegian Variation	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 b5 Bb3 Na5
C70	Nightingale Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 b5 Bb3 Na5 Bxf7+
C70	Alapin’s Defense Deferred, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Bb4
C70	Classical Defense Deferred, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Bc5
C71	Steinitz Defense Deferred; Ruy Lopez; C71	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6
C71	Modern Steinitz Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6
C73	C73	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 Bxc6+ bxc6
C73	Richter Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 Bxc6+ bxc6 d4
C73	Alapin Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 Bxc6+ bxc6 d4 f6
C74	C74	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3
C75	C75	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 Bd7
C76	C76	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 Bd7 d4 g6
C74	Siesta Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 f5
C74	Kopaiev Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c3 f5 exf5 Bxf5 O-O
C71	Keres Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 c4
C71	Noah’s Ark Trap, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 d4 b5 Bb3 exd4 Nxd4 Nxd4 Qxd4 c5 Qd5 Be6 Qc6+ Bd7
C72	C72	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 d6 O-O
C70	Schliemann Defense Deferred, Ruy	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 f5
C70	Jaenisch Gambit Deferred, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 f5 exf5
C77	C77	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6
C77	Treybel; Flohr; Exchange Var Deferred	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 Bxc6
C77	Bayreuth Variation, ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 Bxc6
C77	Jaffe Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 c3
C77	Anderssen Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 d3
C77	Duras Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 d3 d6 c4
C77	Mackenzie Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 d4
C77	Center Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 d4 exd4
C77	Nimzovich; Tarrasch Var, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 Nc3
C78	Normal Variation, Ruy Lopez; C78	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O
C78	Arkangelsk; Counterthrust Var, Ruy	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O b5
C78	Shannon Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O b5 Bb3 Bb7 Ng5 d5
C78	Wing Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O b5 Bb3 Be7 a4
C78	Neo-Steinitz Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O b5 Bb3 d6
C78	Moeller Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Bc5
C84	Closed Defense, Ruy Lopez; C84	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7
C85	Delayed Exchange Ruy Lopez Deferred; C85	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Bxc6
C84	Center Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 d4
C84	Basque Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 d4 exd4 e5 Ne4 c3
C84	Lopez Four Knights, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Nc3
C86	Worrall Attack, Ruy Lopez; C86	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Qe2
C86	Schlechter Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Qe2 b5 Bb3 O-O c3 d5
C86	English Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Qe2 b5 Bb3 O-O c3 d6 d4 Bg4
C87	C87	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1
C88	C88	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3
C88	Trajkovic Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 Bb7
C88	Pseudo-Marshall Var, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 Bb7 c3 d5 exd5 Nxd5 Nxe5 Nxe5
C90	C90	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6
C90	Balla Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 Na5 Bc2 c5 d4 Qc7
C90	Suetin Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O a3
C90	Lutikov Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O Bc2
C90	Pilnik Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O d3
C91	Yates Variation, Ruy; C91	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O d4
C91	Bogoljubow; Counterthrust Var, Ruy	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O d4 Bg4
C92	C92	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3
C92	Keres Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 a5
C92	Flohr; Zaitsev; Lenzerheide Var, Ruy	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Bb7
C92	Kholmov Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Be6
C93	Smyslov Variation, Ruy Lopez; C93	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 h6
C96	C96	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5
C96	Borisenko Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5 Bc2 c5 d4 Nc6
C96	Keres Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5 Bc2 c5 d4 Nd7
C97	Chigorin Variation, Ruy Lopez; C97	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5 Bc2 c5 d4 Qc7
C92	Spanish Benoni, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5 Bc2 c5 d4 Qc7 1d5
C97	Classical Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5 Bc2 c5 d4 Qc7 1Nbd2
C99	C99	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5 Bc2 c5 d4 Qc7 1Nbd2 cxd4
C98	C98	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5 Bc2 c5 d4 Qc7 1Nbd2 Nc6
C98	Rauzer Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Na5 Bc2 c5 d4 Qc7 1Nbd2 Nc6 1dxe5 dxe5 1a4
C94	Breyer; Retreat Variation, Ruy Lopez; C94	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Nb8
C95	C95	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Nb8 d4
C95	Borisenko Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Nb8 d4 Nbd7
C95	Arseniev Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Nb8 d4 Nbd7 c4
C95	Romanishin Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Nb8 d4 Nbd7 Nbd2 Bb7 1Bc2 Re8 1Nf1 Bf8 1Bg5
C95	Simagin Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Nb8 d4 Nbd7 Nh4
C92	Keres Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Nd7
C92	Zaitsev System, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 c3 O-O h3 Re8
C88	Rosen Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 d6 d4
C88	Anti-Marshall Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O a4
C89	C89	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3
C89	Marshall Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5
C89	Marshall Counter-Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 d4
C89	Steiner Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 e4
C89	Kevitz Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 Nxd5 Nxe5 Nxe5 Rxe5 c6 1Bxd5 cxd5 1d4 Bd6 1Re3
C89	Geller Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 Nxd5 Nxe5 Nxe5 Rxe5 c6 1d4 Bd6 1Re1 Qh4 1g3 Qh3
C89	Fischer Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d5 exd5 Nxd5 Nxe5 Nxe5 Rxe5 c6 1g3
C90	Suetin Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 a3
C90	Lutikov Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 d6 Bd2
C90	Leonhardt Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 b5 Bb3 O-O c3 Na5 Bc2 c5 d4 Qc7 h3 Nc6 1d5 Nd8 1Nbd2 g5
C87	Averbakh Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 d6
C87	Kecskemet; Timbuktu Var, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 d6 c3 O-O d4 Bd7 Nbd2 Be8
C87	Romanovsky Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Be7 Re1 d6 c3 O-O d4 Bd7 Nbd2 exd4 cxd4 Nb4
C79	Central Countergambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O d5
C79	Russian Defense, Ruy Lopez; C79; Lasker Defense	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O d6
C79	Brix Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O g6
C80	Tarrasch; Open Variation, Ruy Lopez; C80	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4
C80	Schlechter Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 a4 Nxd4
C80	Berger Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 a4 Nxd4 Nxd4 exd4 Nc3
C80	Harksen Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 c4
C83	Malkin Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5
C81	Keres; Estonian; Howell; Moscow Var	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6
C82	C82	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3
C82	Italian Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5
C82	St Petersburg Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 Nbd2
C82	Dilworth; Kleczynski Var, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 Nbd2 O-O Bc2
C82	Motzko Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 Qd3
C82	Nenarokov Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Bc5 Qd3 Ne7
C83	C83	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Be7
C83	Breslau Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Be7 Re1 O-O Nd4
C82	Berlin Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 c3 Nc5
C80	Bernstein Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Nbd2
C80	Karpov Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Nbd2 Nc5 c3 d4
C81	Howell Attack, Ruy Lopez; C81	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Qe2
C81	Adam Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Qe2 Be7 c4
C81	Ekstrom Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Be6 Qe2 Be7 Rd1 O-O c4
C80	Zukertort Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Bb3 d5 dxe5 Ne7
C80	Richter Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 d5
C80	Friess Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 b5 Nxe5
C80	Riga Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 d4 exd4
C80	Knoore Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 Nc3
C80	Tartakower Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 Qe2
C80	Skipworth Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 O-O Nxe4 Re1 d5
C77	Wormald Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nf6 Qe2
C70	Cozio Defense Deferred, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Nge7
C68	Exchange Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6
C68	Lutikov Variation, Ruy Lopez Exchange	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 bxc6
C68	Keres Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 bxc6 Nc3
C68	Romanovsky Variation, Ruy Lopez Exchange	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 bxc6 Nc3 f6 d3
C68	Alekhjne Variation, Ruy Lopez Exchange	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 d4 exd4 Qxd4 Qxd4 Nxd4 Bd6
C68	Barendregt-Fischer Var, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O
C68	King’s Bishop Variation, Ruy Lopez Exchange	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O Bd6
C68	Alapin Gambit, Ruy Lopez Exchange	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O Bg4 h3 h5
C69	Gligoric Variation, Ruy Lopez; C69	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O f6
C69	Bronstein Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 a6 Bxc6 dxc6 O-O Qd6
C60	Rotary-Albany Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 b6
C60	Alapin Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bb4
C60	Alapin Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bb4 c3 Ba5 Bxc6 dxc6
C64	Classical; Cordel Var, Ruy Lopez; C64	e4 e5 Nf3 Nc6 Bb5 Bc5
C64	Spanish Wing Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bc5 b4
C64	Charousek Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bc5 c3 Bb6
C64	Konikowski Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bc5 c3 d5
C64	Cordel Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bc5 c3 f5
C64	Benelux Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bc5 c3 Nf6 d4 Bb6 O-O O-O
C64	Boden Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bc5 c3 Qe7
C64	Zaitsev Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bc5 O-O Nd4 b4
C64	Zukertort Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Bc5 O-O Nf6 c3
C60	Lucena Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Be7
C60	Sawyer’s Gambit, Ruy Lopez; Spanish Countergambit	e4 e5 Nf3 Nc6 Bb5 d5
C60	Harding Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 d5 Nxe5 Qg5 Nxc6
C60	Fricke Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 d5 Nxe5 Qg5 O-O
C62	Steinitz Defense, Ruy Lopez; C62	e4 e5 Nf3 Nc6 Bb5 d6
C62	Nimzovich Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 d6 d4 Bd7 Nc3 Nf6 Bxc6
C62	Center Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 d6 d4 exd4 O-O
C63	Schliemann; Jaenisch Var, Ruy Lopez; C63	e4 e5 Nf3 Nc6 Bb5 f5
C63	Exchange Variation, Schliemann Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 Bxc6
C63	Schoenemann Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 d4
C63	Jaenisch Gambit Accepted, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 exf5
C63	Berger (Dyckhoff) Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 Nc3
C63	Kostic Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 Nc3 fxe4 Nxe4 Be7
C63	Moehring Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 Nc3 fxe4 Nxe4 d5 Nxe5 dxe4 Nxc6 Qd5
C63	Tartakower Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 Nc3 fxe4 Nxe4 Nf6
C63	Soviet Youth Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 Nc3 Nd4 O-O
C63	Kostic Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f5 Nc3 Nf6 exf5 Bc5
C60	Nuremberg Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 f6
C60	Brentano Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 g5
C60	Barnes; Smyslov; Fianchetto Var, Ruy	e4 e5 Nf3 Nc6 Bb5 g6
C60	Retreat Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nc8
C61	Bird Defense, Ruy Lopez; C61	e4 e5 Nf3 Nc6 Bb5 Nd4
C61	Paulsen Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nd4 Nxd4 exd4 O-O Ne7
C65	Berlin Defense, Ruy Lopez; C65	e4 e5 Nf3 Nc6 Bb5 Nf6
C65	Kaufmann Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 d3 Bc5 Be3
C65	Anderssen Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 d3 d6 Bxc6+
C65	Duras Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 d3 d6 c4
C65	Mortimer Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 d3 Ne7
C65	Mortimer Trap, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 d3 Ne7 Nxe5 c6
C65	Nyholm Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 d4 exd4 O-O
C65	Beverwijk Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Bc5
C66	Improved Steinitz Defense, Ruy Lopez; C66	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6
C66	Hedgehog Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 Be7
C66	Closed Bernstein Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 Be7 Bg5
C66	Closed Showalter Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 Be7 Bxc6
C66	Tarrasch Trap, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 Be7 Re1 O-O
C66	Closed Wolf Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O d6 d4 Bd7 Nc3 exd4
C66	Fishing Pole Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Ng4
C67	Rio Gambit Accepted, Ruy Lopez; C67	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4
C67	Rosenthal Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 a6
C67	Rio de Janeiro Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7
C67	Minckwitz Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 dxe5
C67	Trifunovic Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 d5
C67	Pillsbury Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6+ bxc6 dxe5 Nb7 b3
C67	Zukertort Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6+ bxc6 dxe5 Nb7 c4
C67	Berlin; Rio de Janerio Var, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6+ bxc6 dxe5 Nb7 Nc3 O-O Re1
C67	Winawer Attack, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6+ bxc6 dxe5 Nb7 Nd4 O-O
C67	Cordel Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Be7 Qe2 Nd6 Bxc6+ bxc6 dxe5 Nf5
C67	L’Hermet Variation, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Nd6
C67	Westerinen Line, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nf6 O-O Nxe4 d4 Nd6 Bxc6 dxc6 dxe5 Ne4
C60	Cozio Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nge7
C60	Tartakower Gambit, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nge7 d4 exd4 Nxd4 g6 Nc3 Bg7 Be3 O-O Qd2 d5
C60	Paulsen Variation, Cozio Defense, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Nge7 Nc3 g6
C60	Vinogradov Var, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Qe7
C60	Frankfort; Gunderam Var, Ruy Lopez	e4 e5 Nf3 Nc6 Bb5 Qf6
C50	Italian Game; C50	e4 e5 Nf3 Nc6 Bc4
C50	Giuoco Piano; Italian Opening	e4 e5 Nf3 Nc6 Bc4 Bc5
C51	Evans Gambit; C51	e4 e5 Nf3 Nc6 Bc4 Bc5 b4
C51	Lange Variation, Evans Gambit	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bb6 b5 Na5 Nxe5 Nh6
C51	Evans Gambit Accepted	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4
C52	Main Line, Evans Gambit; C52	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5
C52	Leonhardt Variation, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 b5
C52	Sokolsky Variation, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 d6 Bg5
C52	Lasker Defense, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 d6 O-O Bb6
C52	Tartakower Attack, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 d6 Qb3
C52	Pierce Defense, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 exd4
C52	Schulen Defense, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 exd4 O-O b5
C52	Waller Attack, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 exd4 O-O d6 Qb3
C52	Compromised Defense, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 exd4 O-O dxc3
C52	Mieses Defense, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 d4 exd4 O-O Nge7
C52	Slow Variation, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O
C52	Richardson Attack, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Ba5 O-O Nf6 d4 O-O Nxe5
C51	Normal Position, Evans Gambit	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6
C51	Ulvestad Variation, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 d5 Na5 Bb2
C51	Paulsen Variation, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 d5 Na5 Bb2 Ne7
C51	Morphy Attack, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3
C51	Fraser Attack; Mortimer, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3 Bg4 Qa4
C51	Goering Attack, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bc5 d4 exd4 O-O d6 cxd4 Bb6 Nc3 Na5 Bg5
C51	Stone-Ware Defense, Evans Gambit	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Bd6
C51	Anderssen Variation, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Be7
C51	Cordel Line, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 Bxb4 c3 Be7 d4 Na5
C51	Hein Countergambit, Evans	e4 e5 Nf3 Nc6 Bc4 Bc5 b4 d5
C50	Jerome Gambit; Kentucky Opening	e4 e5 Nf3 Nc6 Bc4 Bc5 Bxf7+
C53	Classical Variation, Italian; C53	e4 e5 Nf3 Nc6 Bc4 Bc5 c3
C53	Labourdonnais Variation, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 d6 d4 exd4 cxd4 Bb6
C53	Alexandre Gambit, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 f5
C54	C54	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6
C54	Bird Attack, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 b4
C53	Giuoco Pianissimo	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d3
C53	Center Attack, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4
C53	Grevo Gambit, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4
C54	Cracow Variation, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Kf1
C54	Moeller (Therkatz) Attack, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Bxc3 d5
C54	Therkatz-Herzog, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Bxc3 d5 Bf6 Re1 Ne7
C54	Greco Variation, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 cxd4 Bb4+ Nc3 Nxe4 O-O Nxc3
C54	Mason Gambit, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 d4 exd4 O-O
C53	Albin Gambit, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Nf6 O-O
C53	Lewis Defense, Italian; Closed Variation	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Qe7
C53	Center Holding Variation, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Qe7 d4 Bb6
C53	Mestel Variation, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 c3 Qe7 d4 Bb6 Bg5
C50	Giuoco Pianissimo	e4 e5 Nf3 Nc6 Bc4 Bc5 d3
C50	Lucchini Gambit; Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 d3 f5
C50	Italian Four Knights Variation	e4 e5 Nf3 Nc6 Bc4 Bc5 d3 Nf6 Nc3
C50	Canal Variation, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 d3 Nf6 Nc3 d6 Bg5
C50	Rosentreter Gambit, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 d4
C50	Italian Variation, Four Knights Game	e4 e5 Nf3 Nc6 Bc4 Bc5 Nc3 Nf6
C50	Deutz Gambit, Italian	e4 e5 Nf3 Nc6 Bc4 Bc5 O-O Nf6 d4
C50	Hungarian Defense	e4 e5 Nf3 Nc6 Bc4 Be7
C50	Tartakower Variation, Hungarian	e4 e5 Nf3 Nc6 Bc4 Be7 d4 exd4 c3 Nf6 e4 Ne4
C50	Half Giuoco Piano; Semi-Italian Opening	e4 e5 Nf3 Nc6 Bc4 d6
C50	Rousseau Gambit	e4 e5 Nf3 Nc6 Bc4 f5
C50	Shilling (Kostic) Gambit, Italian	e4 e5 Nf3 Nc6 Bc4 Nd4
C55	Two Knights Defense; C55	e4 e5 Nf3 Nc6 Bc4 Nf6
C55	De Riviere Gambit	e4 e5 Nf3 Nc6 Bc4 Nf6 c3
C55	Modern Bishop’s Opening	e4 e5 Nf3 Nc6 Bc4 Nf6 d3
C56	Open Variation, Two Knights Defense; C56	e4 e5 Nf3 Nc6 Bc4 Nf6 d4
C56	Perreux Variation, Two Knights Defense	e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 Ng5
C56	Scotch Gambit	e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O
C56	Max Lange Attack	e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5
C56	Loman Defense, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 d5 exf6 dxc4 Re1+ Be6 Ng5 g6
C56	Marshall Variation, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Bc5 e5 d5 exf6 dxc4 Re1+ Be7 Ng5 Qd5 Nc3 Qf5
C56	Double Gambit Accepted, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Nxe4
C56	Nachmanson Gambit, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Nxe4 Nc3
C56	Jordansky Attack, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 d4 exd4 O-O Nxe4 Re1 d5 Bxd5 Qxd5 Nc3 Qa5 Ne4 Be6 Bg5
C57	Prussian Game; Knight Attack, Two Knights; C57	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5
C57	Traxler; Wilkes-Barre Var, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 Bc5
C57	Trencianske-Teplice Gambit, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 Bc5 Bxf7+ Ke7 d4
C57	Ulvestad Variation, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 b5
C57	Kurkin Gambit, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 b5 Bf1 h6 Nxf7
C58	Polerio Defense, Two Knights; C58	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5
C59	C59	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Be2
C59	Suhle Defense, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Be2 h6
C59	Goering Variation, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Be2 h6 Nf3 e4 Ne5
C58	Bogoljubow Variation, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Qf3
C58	Colman Variation, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 Bb5+ c6 dxc6 bxc6 Qf3 Rb8
C58	Kieseritzky; Morphy Var, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 d3
C58	Yankovich Variation, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Na5 d3 h6 Nf3 e4 Qe2 Nxc4 dxc4 Bc5 Nfd2
C57	Kloss Gambit, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nb4
C57	Fritz Variation, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nd4
C57	Berliner Variation, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nd4 c3 b5 Bf1 Nxd5 Ne4 Qh4
C57	Lolli Attack, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nxd5 d4
C57	Fried Liver; Fegatello Attack, 2 Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 d5 exd5 Nxd5 Nxf7
C57	Ponziani-Steintz Gambit, Two Knights	e4 e5 Nf3 Nc6 Bc4 Nf6 Ng5 Nxe4
C44	Taylor Opening; Inverted Hungarian	e4 e5 Nf3 Nc6 Be2
C44	Inverted Hanham Opening	e4 e5 Nf3 Nc6 Be2 Nf6 d3 d5 Nbd2
C44	Basman Gambit	e4 e5 Nf3 Nc6 Be2 Nf6 d4 exd4 e5
C44	Ponziani; Staunton; English Knights	e4 e5 Nf3 Nc6 c3
C44	Spanish Variation, Ponziani	e4 e5 Nf3 Nc6 c3 d5 Bb5
C44	Nikitin Gambit, Ponziani	e4 e5 Nf3 Nc6 c3 d5 Bb5 dxe4 Nxe5 Qd5 Qa4
C44	Caro Variation, Ponziani	e4 e5 Nf3 Nc6 c3 d5 Qa4 Bd7
C44	Steinitz Variation, Ponziani	e4 e5 Nf3 Nc6 c3 d5 Qa4 f6
C44	Leonhardt Variation, Ponziani	e4 e5 Nf3 Nc6 c3 d5 Qa4 Nf6
C44	Ponziani Counter-Gambit	e4 e5 Nf3 Nc6 c3 f5
C44	Schmidt Attack, Ponziani	e4 e5 Nf3 Nc6 c3 f5 d4 d6 d5
C44	Jaenisch Counterattack, Ponziani	e4 e5 Nf3 Nc6 c3 Nf6
C44	Neumann Gambit, Ponziani	e4 e5 Nf3 Nc6 c3 Nf6 Bc4
C44	Breyer Opening, Ponziani	e4 e5 Nf3 Nc6 c3 Nf6 d3 Be7 b4
C44	Vukovic Gambit, Ponziani	e4 e5 Nf3 Nc6 c3 Nf6 d4 Nxe4 d5 Bc5
C44	Dresden Opening	e4 e5 Nf3 Nc6 c4
C44	Scotch Game	e4 e5 Nf3 Nc6 d4
C44	MacLopez; Relfsson Gambit, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Bb5
C44	Scotch Gambit	e4 e5 Nf3 Nc6 d4 exd4 Bc4
C44	London Defense, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bb4+
C44	Vitzhum Attack, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bc5 Ng5 Nh6 Qh5
C44	Paulsen; Anderssen C-A, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Bc4 Bc5 O-O d6 c3 Bg4
C44	Benima Defense, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Bc4 Be7
C44	Goering Gambit, Scotch	e4 e5 Nf3 Nc6 d4 exd4 c3
C44	Goering Gambit Declined, Scotch	e4 e5 Nf3 Nc6 d4 exd4 c3 d5
C44	Double Pawn Sacrifice, Goering Gambit	e4 e5 Nf3 Nc6 d4 exd4 c3 dxc3 Bc4
C44	Bardeleben Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 c3 dxc3 Nxc3 Bb4 Bc4 Nf6
C45	C45	e4 e5 Nf3 Nc6 d4 exd4 Nxd4
C45	Malaniuk Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bb4+
C45	Classical Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5
C45`	Paulsen Attack, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Bb5
C45	Gunsberg Defense, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Bb5 Nd8
C45	Fleissig; Meitner Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Nc2
C45	Blackburne Attack, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Nge7 Qd2
C45	Millennium Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 c3 Qg6
C45	Blumenfeld Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Be3 Qf6 Nb5
C45	Potter Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Nb3
C45	Romanishin Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Nb3 Bb4+
C45	Geller Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Nb3 Bb6 a4 a6 Nc3 Nf6
C45	Intermezzo Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Bc5 Nxc6 Qf6
C45	Alekhine Gambit, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Nf6 e5
C45	Schmidt Var; Scotch Four Knights	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Nf6 Nc3
C45	Mieses Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Nf6 Nxc6
C45	Tartakower Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Nf6 Nxc6 bxc6 Nd2
C45	Steinitz; Pulling Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4
C45	Braune Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Be3
C45	Horwitz Attack, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nb5
C45	Steinitz Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nc3
C45	Modern Defesne, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nc3 Bb4
C45	Fraser Attack, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nf3
C45	Paulsen Variation, Scotch	e4 e5 Nf3 Nc6 d4 exd4 Nxd4 Qh4 Nf5
C44	Lolli Attack, Scotch	e4 e5 Nf3 Nc6 d4 Nxd4
C44	Napoleon Gambit, Scotch	e4 e5 Nf3 Nc6 d4 Nxd4 Nxd4 exd4 Bc4
C44	Konstantinopolsky Opening	e4 e5 Nf3 Nc6 g3
C46	Three Knights Opening; C46	e4 e5 Nf3 Nc6 Nc3
C46	Schlechter Variation, Three Knights	e4 e5 Nf3 Nc6 Nc3 Bb4 Nd5 Nf6
C46	Winawer Defense, Three Knights	e4 e5 Nf3 Nc6 Nc3 f5
C46	Steinitz Defense, Three Knights	e4 e5 Nf3 Nc6 Nc3 g6
C46	Rosenthal Variation, Three Knights	e4 e5 Nf3 Nc6 Nc3 g6 d4 exd4 Nd5
C47	Four Knights Openng; C47	e4 e5 Nf3 Nc6 Nc3 Nf6
C47	Gunsberg Variation, Four Kngiths	e4 e5 Nf3 Nc6 Nc3 Nf6 a3
C47	Provincial Opening, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 a3 d6 h3
C48	Spanish Four Knights Game; C48	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5
C48	Ranken Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 a6 Bxc6
C49	Double Ruy Lopez Opening, 4 Knights; C49	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4
C49	Paulsen Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O Bxc6
C49	Svenonius Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 Bxc3 bxc3 d5
C49	Janowski Variation, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 Bxc3 bxc3 d6 Re1
C49	Symmetrical Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6
C49	Bernstein Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Bg5 Bxc3 bxc3 Ne7
C49	Metger Unpin Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Bg5 Bxc3 bxc3 Qe7 Re1 Nd8
C49	Pillsbury Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Bg5 Ne7
C49	Maroczy Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O d3 d6 Ne2
C49	Blackburne Attack, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bb4 O-O O-O Nd5 Bc5 d4
C48	Classical Variation, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bc5
C48	Marshall Gambit, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Bc5 Nxe5 Nd4 Ba4 O-O
C48	Rubinstein Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bb5 Nd4
C46	Italian Variation, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bc4
C47	Noa Gambit, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Bc4 Nxe4 Bxf7+
C47	Bogoljubow (Scotch) Variation, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 d4
C47	Oxford Gambit, Four Kngihts	e4 e5 Nf3 Nc6 Nc3 Nf6 d4 Bb4 d5 Nd4
C47	Krause Gambit, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 d4 Bb4 Nxe5
C47	Leonhardt Defense, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 d4 Bb4 Nxe5 Qe7
C47	Belgrade Gambit, 4 Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 d4 exd4 Nd5
C47	Schmid Gambit, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 d4 exd4 Nxd4 Nxe4
C46	Halloween Gambit, Four Knights	e4 e5 Nf3 Nc6 Nc3 Nf6 Nxe5
C44	Chicago; Irish; Schulze-Muller Gambit	e4 e5 Nf3 Nc6 Nxe5 Nxe5 d4
C42	Petroff Defense; Russian Defense; C42	e4 e5 Nf3 Nf6
C42	Urosov Gambit, Petroff	e4 e5 Nf3 Nf6 Bc4
C42	Boden-Kieseritzky Gambit, Petroff	e4 e5 Nf3 Nf6 Bc4 Nxe4 Nc3
C42	Lichtenhein Defense, Petroff	e4 e5 Nf3 Nf6 Bc4 Nxe4 Nc3 d5
C43	Modern Attack, Petroff	e4 e5 Nf3 Nf6 d4
C43	Symmetrical Variation, Petroff	e4 e5 Nf3 Nf6 d4 d5
C43	Suchting Gambit, Petroff	e4 e5 Nf3 Nf6 d4 exd4 Bc4
C43	Tal Gambit, Petroff	e4 e5 Nf3 Nf6 d4 exd4 e5 Ne4 Bb5
C43	Center Attack, Petroff	e4 e5 Nf3 Nf6 d4 exd4 e5 Ne4 Qxd4
C43	Trifunovic Variation, Petroff	e4 e5 Nf3 Nf6 d4 Nxe4 Bd3 d5 Nxe5 Bd6 O-O O-O c4 Bxe5
C43	Murret Variation, Petroff	e4 e5 Nf3 Nf6 d4 Nxe4 Bd3 Nc6
C42	Russian Three Knights Var, Petroff	e4 e5 Nf3 Nf6 Nc3
C43	Steinitz Variation, Petoff; C43	e4 e5 Nf3 Nf6 Nxe5 d6 d4
C43	Urusov Gambit, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 d4 exd4 Bc4
C42	Paulsen Attack, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nc4
C42	Karklins-Martinovsky Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nd3
C42	Millenium Attack, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 Bd3
C42	Kaufmann Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 c4
C42	French Attack, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d3
C42	Classical Attack, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4
C42	Marshall Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Bd6
C42	Tarrasch Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Bd6 O-O O-O c4 Bg4
C42	Staunton Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Bd6 O-O O-O c4 c6
C42	Jaenisch Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 c4
C42	Browne Attack, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 c4 Nb4 cxd5
C42	Chigorin Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 Re1
C42	Berger Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O Nc6 Re1 Bg4 c3 f5 Nbd2
C42	Mason Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Be7 O-O O-O
C42	Mason-Showalter Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 d4 d5 Bd3 Nc6
C42	Nimzovich Attack, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 Nc3
C42	Lasker Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 Qe2
C42	Cozio (Lasker) Attack, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nf3 Nxe4 Qe2
C42	Cochrane Gambit, Petroff	e4 e5 Nf3 Nf6 Nxe5 d6 Nxf7
C42	Stafford Gambit, Petroff	e4 e5 Nf3 Nf6 Nxe5 Nc6
C42	Damiano Variation, Petroff	e4 e5 Nf3 Nf6 Nxe5 Nxe4
C42	Kholmov Gambit, Petroff	e4 e5 Nf3 Nf6 Nxe5 Nxe4 Qe2 Qe7
C42	Moody Gambit, Petroff	e4 e5 Nf3 Nf6 Qe2 Nc6 d4
C40	Levenstein; Queen’s Defense; Brazilian; Gunderam	e4 e5 Nf3 Qe7
C40	Gunderam Gambit	e4 e5 Nf3 Qe7 Bc4 f5
C40	McConnell Defense	e4 e5 Nf3 Qf6
C40	Greco Defense	e4 e5 Nf3 Qf6
C40	Labourdonnais Gambit	e4 e5 Nf3 Qf6 Bc4 Qg6 O-O
C20	Napoleon Attack	e4 e5 Qf3
C20	Wayward Queen; Danvers; Parnham	e4 e5 Qh5
C20	Mellon Gambit	e4 e5 Qh5 Nc6 Bc4 Nh6 d3 g6 Qf3 f6 Ne2 d5
C20	Kiddie Countergambit	e4 e5 Qh5 Nf6
C00	French Defense; C00	e4 e6
C00	Reti (Horwitz) Variation, French	e4 e6 b3
C00	Papa-Ticulat Gambit, French	e4 e6 b3 d5 Bb2
C00	Banzai-Leong Gambit, French	e4 e6 b4
C00	Pinova Gambit	e4 e6 b4 Bxb4 e5
C00	Bird Invitation, French	e4 e6 Bb5
C00	Orthoschapp Variation, French	e4 e6 c4 d5 cxd5 exd5 Qb3
C00	King”s Indian Attack	e4 e6 d3
C00	Reversed Philidor, French	e4 e6 d3 d5 Nd2 Nf6 Ngf3 Nc6 Be2
C00	Franco-Hiva Gambit, French	e4 e6 d3 f5
C01	C01	e4 e6 d4
C01	Baeuerle Gambit, French	e4 e6 d4 b5
C01	Schlechter Variation, French	e4 e6 d4 d5 Bd3
C00	Alapin; Witaker Gambit, French	e4 e6 d4 d5 Be3
C00	Alapin-Diemer Gambit, French	e4 e6 d4 d5 Be3 dxe4 f3
C00	Diemer-Duhm Gambit, French	e4 e6 d4 d5 c4
C02	Advance Variation, French; C02	e4 e6 d4 d5 e5
C02	Extended Bishop Swap, French	e4 e6 d4 d5 e5 Bd7
C02	Advance; Nimzovich; Steinitz Var, Fr	e4 e6 d4 d5 e5 Bd7
C02	Frenkel Gambit, French	e4 e6 d4 d5 e5 c5 b4
C02	Paulsen Attack, French	e4 e6 d4 d5 e5 c5 c3 Nc6 Nf3
C02	Euwe Variation, French	e4 e6 d4 d5 e5 c5 c3 Nc6 Nf3 Bd7
C02	Lputian Variation, French	e4 e6 d4 d5 e5 c5 c3 Nc6 Nf3 Qb6 a3 Nh6
C02	Milner-Barry Gambit, French	e4 e6 d4 d5 e5 c5 c3 Nc6 Nf3 Qb6 Bd3
C02	Milner-Barry Gambit, French	e4 e6 d4 d5 e5 c5 c3 Nc6 Nf3 Qb6 Bd3 cxd3 cxd3 Bd7 O-O Nxd4 Nxd4
C02	Wade Variation, French	e4 e6 d4 d5 e5 c5 c3 Qb6 Nf3 Bd7
C02	Nimzovich Variation, French	e4 e6 d4 d5 e5 c5 Nf3
C02	Ruisdonk Gambit, French	e4 e6 d4 d5 e5 c5 Nf3 cxd4 Bd3
C02	Nimzovich Attack, French	e4 e6 d4 d5 e5 c5 Qg4
C01	Exchange Variation, French	e4 e6 d4 d5 exd5 exd5
C01	Monte Carlo Variation, French	e4 e6 d4 d5 exd5 exd5 c4
C01	Svenius Variation, French	e4 e6 d4 d5 exd5 exd5 Nc3 Nf6 Bg5
C10	Normal Variation, French; C10	e4 e6 d4 d5 Nc3
C15	Winawer Variation, French; C15	e4 e6 d4 d5 Nc3 Bb4
C15	Winckelmann-Riemer Gambit, French	e4 e6 d4 d5 Nc3 Bb4 a3
C15	Fingerslip Variation, French	e4 e6 d4 d5 Nc3 Bb4 Bd2
C15	Kunin Double Gambit, French	e4 e6 d4 d5 Nc3 Bb4 Bd2 dxe4 Qg4 Qxd4
C15	Schwarz’s Line, French	e4 e6 d4 d5 Nc3 Bb4 Bd2 Ne7 Nb1
C15	Kondratiyev Variation, French	e4 e6 d4 d5 Nc3 Bb4 Bd3 c5 exd5 Qxd5 Bd2
C16	C16	e4 e6 d4 d5 Nc3 Bb4 e5
C17	C17	e4 e6 d4 d5 Nc3 Bb4 e5 c5
C18	C18	e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3
C18	Swiss (Retreat) Variation, French	e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Ba5
C18	Armenian Line, French	e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Ba5 b4 cxd4
C19	C19	e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Ne7
C19	Poisoned Pawn Variation, French Winawer	e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 Bxc3+ bxc3 Ne7 Qg4
C18	Maroczy-Willis Variation, French	e4 e6 d4 d5 Nc3 Bb4 e5 c5 a3 cxd4 axb4 dxc3
C17	Bogoljubow Variation, French	e4 e6 d4 d5 Nc3 Bb4 e5 c5 Bd2
C17	Icelandic Defense, French	e4 e6 d4 d5 Nc3 Bb4 e5 c5 Bd2 Ne7 f4
C17	Moscow Variation, French	e4 e6 d4 d5 Nc3 Bb4 e5 c5 Qg4
C16	Petrosian Variation, French	e4 e6 d4 d5 Nc3 Bb4 e5 Qd7
C15	Delayed Exchange Variation, French	e4 e6 d4 d5 Nc3 Bb4 exd5
C01	Canal Attack, French	e4 e6 d4 d5 Nc3 Bb4 exd5 exd5 Bd3 Ne7 Qh5
C15	Alekhine (Maroczy) Variation, French	e4 e6 d4 d5 Nc3 Bb4 Ne2
C15	Kan Variation, French	e4 e6 d4 d5 Nc3 Bb4 Ne2 dxe4 a3 Bxc3+ Nxc3 Nc6
C10	Marshall Variation, French	e4 e6 d4 d5 Nc3 c5
C10	Rubinstein Variation, French	e4 e6 d4 d5 Nc3 dxe4
C10	Fort Knox Variation, French	e4 e6 d4 d5 Nc3 dxe4 Bd7 Nf3 Bc6
C10	Rasa-Studier Gambit, French	e4 e6 d4 d5 Nc3 dxe4 Be3
C10	Ellis Gambit, French	e4 e6 d4 d5 Nc3 dxe4 Nxe4 e5
C10	Blackburne Defense, French	e4 e6 d4 d5 Nc3 dxe4 Nxe4 Nd7
C10	Capablanca Line, French	e4 e6 d4 d5 Nc3 dxe4 Nxe4 Nd7 Nf3 Ngf6 Nxf6+ Nxf6 Ne5
C10	Frere; Becker; Katilimov, Maric Var, French	e4 e6 d4 d5 Nc3 dxe4 Nxe4 Qd5
C11	Classical Variation, French; C11	e4 e6 d4 d5 Nc3 Nf6
C11	Swiss Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bd3
C11	Henneberger Variation, French	e4 e6 d4 d5 Nc3 Nf6 Be3
C12	C12	e4 e6 d4 d5 Nc3 Nf6 Bg5
C12	McCutcheon Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4
C12	Olland (Dutch) Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bc1
C12	Lasker Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bd2 Bxc3
C12	Duras Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bd2 Bxc3 bxc3 Ne4 Qg4 Kf8 Bc1
C12	Tartakower Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bd2 Nfd7
C12	Janowski Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Be3
C12	Bernstein Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 Bh4
C12	Chigorin Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 exf6
C12	Grigoriev Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 e5 h6 exf6 hxg5 fxg7 Rg8 h4 gxh4 Qg4
C12	Wolf Gambit, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Bb4 Nge2
C14	C14	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7
C14	Anderssen (Richter) Attack, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 Bxf6
C14	Tartakower Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Ne4
C14	Classical Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7
C14	Tarrasch Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 Bd3
C14	Steinitz Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 f4
C14	Alapin Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 Nb5
C14	Rubinstein Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 Qd2
C14	Pollock Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 Bxe7 Qxe7 Qg4
C14	Chatard-Alekhine; Albin Attack, Fr	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4
C14	Maroczy Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 a6
C14	Albin-Chatard Gambit, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 Bxg5 hxg5 Qxg5
C14	Breyer Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 c5
C14	Teichmann Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 f6
C14	Spielmann Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Nfd7 h4 O-O
C13	Vistaneckis (Nimzovich) Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Ng8
C13	Frankfurt Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 Be7 e5 Ng8 Be3 b6
C11	Burn Variation, French	e4 e6 d4 d5 Nc3 Nf6 Bg5 dxe4
C13	C13	e4 e6 d4 d5 Nc3 Nf6 Bg5 dxe4
C11	Steinitz Variation, French	e4 e6 d4 d5 Nc3 Nf6 e5
C11	Bradford Attack, French	e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 f4 c5 dxc5 Bxc5 Qg4
C11	Brodsky-Jones Variation, French	e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 f4 c5 dxc5 Nc6 a3 Bxc5 Qg4 O-O Nf3 f6
C11	Boleslavsky Variation, French	e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 f4 c5 Nf3 Nc6 Be3
C11	Gledhill Attack, French	e4 e6 d4 d5 Nc3 Nf6 e5 Nfd7 Qg4
C10	Svenonius Variation, French	e4 e6 d4 d5 Nc3 Nf6 exd5
C03	Tarrasch Variation, French; C03	e4 e6 d4 d5 Nd2
C03	Morozevich Variation, French	e4 e6 d4 d5 Nd2 Be7
C07	Open System Tarrasch French; C07	e4 e6 d4 d5 Nd2 c5
C08	C08	e4 e6 d4 d5 Nd2 c5 exd5 exd5
C09	C09	e4 e6 d4 d5 Nd2 c5 exd5 exd5 Ngf3 Nc6
C07	Shaposhnikov Gambit, French	e4 e6 d4 d5 Nd2 c5 exd5 Nf6
C07	Chistiakov Defense, French	e4 e6 d4 d5 Nd2 c5 exd5 Qxd5
C03	Haberditz Variation, French	e4 e6 d4 d5 Nd2 f5
C04	C04	e4 e6 d4 d5 Nd2 Nc6
C06	Botvinnik Variation, French	e4 e6 d4 d5 Nd2 Nc6 e4 Nfd7 Bd3 c5 c3 b6
C04	Guimard Variation, French	e4 e6 d4 d5 Nd2 Nc6 Ngf3 Nf6 e5 Nfd7
C04	Leningrad Variation, French	e4 e6 d4 d5 Nd2 Nc6 Ngf3 Nf6 e5 Nfd7 f4 c5 c3 Nc6 Ndf3 cxd4 cxd4
C05	C05	e4 e6 d4 d5 Nd2 Nf6
C06	C06	e4 e6 d4 d5 Nd2 Nf6 e5 Nfd7 Bd3
C01	Perseus Gambit, French	e4 e6 d4 d5 Nf3
C01	Carlson Gambit, French	e4 e6 d4 d5 Nf3 dxe4 Ne5
C01	Morphy Gambit, French	e4 e6 d4 d5 Nh3
C01	Hoffman Gambit	e4 e6 d4 d5 Qe2 e5 f4 exf4
C01	Franco-Hiva Gambit I, French	e4 e6 d4 f5
C01	Mediterranean Defense, French	e4 e6 d4 Nf6
C00	Steinitz Attack, French	e4 e6 e5
C00	Bourdonnais (La Bourdonnais) Variation, French	e4 e6 f4
C00	Reuter Gambit, French	e4 e6 f4 d5 Nf3 dxe4 Ng5
C00	Reti-Spielmann Attack, French	e4 e6 g3
C00	Queen’s Knight, French	e4 e6 Nc3
C00	Pelikan Variation, French	e4 e6 Nc3 d5 f4
C00	Two Knight Variation, French	e4 e6 Nc3 d5 Nf3
C00	Knight Variation, French	e4 e6 Nf3
C00	Wing Gambit, French	e4 e6 Nf3 d5 e5 c5 b4
C00	Two Knights Variation, French	e4 e6 Nf3 d5 Nc3
C00	Chigorin Variation, French	e4 e6 Qe2
B00	Mao Tse Tung; Duras	e4 f5
B00	Fred; From Reversed	e4 f5
B00	Tiers Counter-Gambit	e4 f5
B00	Barnes Defense	e4 f6
B00	Basman Defense; Macho Grob	e4 g5
B00	Basman; Macho Grob; Borg	e4 g5
B00	Borg Gambit	e4 g5 d4 Bg7
B00	Zilbermints Gambit, Borg	e4 g5 d4 e5
B00	Borg Defense; Troon Gambit	e4 g5 d4 h6 h4 g4
B06	Pirc; Robatsch; Modern; King Pawn Fianchetto; B06	e4 g6
B06	Monkey’s Bum, Pirc	e4 g6 Bc4 Bg7 Qf3 e6 d4
B06	Bishop Attack	e4 g6 d4 Bg7 Bc4
B06	Buecker Gambit	e4 g6 d4 Bg7 Bc4 b5
B06	Westermann Gambit	e4 g6 d4 Bg7 Bd2
B06	Wind Gambit	e4 g6 d4 Bg7 Bd3
A40	Polish Variation	e4 g6 d4 Bg7 c4 c5 Nf3 Qb6
A40	Dunworth Variation, Modern Defense	e4 g6 d4 Bg7 c4 d5 exd5 c6 dxc6 Bxd4
B06	Three Pawns Attack	e4 g6 d4 Bg7 f4
B06	Pterodactyl, Pirc	e4 g6 d4 Bg7 Nc3 c5
B06	Gurgenidze Defense, Modern Defense	e4 g6 d4 Bg7 Nc3 c6 f4 d5 e5 h5
B06	Mittenberger Gambit, Modern Defense	e4 g6 d4 Bg7 Nc3 d5
B06	Anti-Modern	e4 g6 d4 Bg7 Nc3 d6 Bc4 c6 Qe2
B06	Pseudo-Austrian Attack	e4 g6 d4 Bg7 Nc3 d6 f4
B06	Two Knight Variation, Modern Defense	e4 g6 d4 Bg7 Nc3 d6 Nf3
B06	Suttles Variation, Modern Defense	e4 g6 d4 Bg7 Nc3 d6 Nf3 c6
B06	Mongredien Defense, Pirc	e4 g6 d4 Bg7 Nf3 b6
B06	Geller’s System, Modern Defense	e4 g6 d4 Bg7 Nf3 d6 c3
B06	Rossolimo Variation, Modern Defense	e4 g6 d4 Bg7 Nf3 d6 c4 Bg4
B06	Accelerated Gurgenidze	e4 g6 d4 Bg7 Nf3 d6 Nc3 c6
B06	Small Center Variation, Pirc	e4 g6 d4 Bg7 Nf3 d6 Nc3 e6
B06	Fianchetto Gambit, Modern Defense	e4 g6 d4 f5
B06	Norwegian Defense	e4 g6 d4 Nf6
B06	Masur Gambit	e4 g6 d4 Nh6 Nc3 f5 Bxh6 Bxh6 exf5 O-O
B00	Pickering (Goldsmith) Defense	e4 h5
B00	Picklepuss Defense	e4 h5 d4 Nf6
B00	Carr Defense	e4 h6
B00	Zilbermints Gambit, Carr Defense	e4 h6 d4 e5
B00	Lemming Defense	e4 Na6
B00	Nimzovich Defense	e4 Nc6
B00	Wheeler Gambit, Nimzovich Defense	e4 Nc6 b4 Nxb4 c3 Nc6 d4
B00	Pseudo-Spanish Variation	e4 Nc6 Bb5
B00	Scandanavian Variation, Nimzovich Defense	e4 Nc6 d4 d5
B00	Hornung Gambit, Nimzovich Defense	e4 Nc6 d4 d5 Be3
B00	Aachen Gambit, Nimzovich Defense	e4 Nc6 d4 d5 exd5 Nb4
B00	Marshall Gambit, Nimzovich	e4 Nc6 d4 d5 exd5 Qxd5 Nc3
B00	Bogoljubow Variation, Nizovich Defense	e4 Nc6 d4 d5 Nc3
B00	Brandics Gambit, Nimzovich Defense	e4 Nc6 d4 d5 Nc3 a6
B00	Richter Gambit, Nimzovich Defense	e4 Nc6 d4 d5 Nc3 dxe4 d5 Nb8 f3
B00	Nimzovich Gambit, Nimzovich Defense	e4 Nc6 d4 d5 Nc3 dxe4 d5 Ne5
B00	Alekseev Variation, Nimzovich; Heinola-Deppe Gambit	e4 Nc6 d4 d5 Nc3 e5
B00	Erben Gambit, Nimzovich Defense	e4 Nc6 d4 d5 Nc3 g6
B00	Vehre Variation, Nimzovich Defense	e4 Nc6 d4 d5 Nc3 Nf6
B00	Mikenas Variation, Nimzovich Defense	e4 Nc6 d4 d6
B00	Kennedy Variation, Nimzovich	e4 Nc6 d4 e5
B00	Linksspringer Variation, Nimzovich Defense	e4 Nc6 d4 e5 d5
B00	Bileefelder Gambit, Nimzovich Defense	e4 Nc6 d4 e5 dxe5 Bc5
B00	Burgar Gambit, Nimzovich Defense	e4 Nc6 d4 e5 dxe5 d6
B00	Hammer Gambit, Nimzovich Defense	e4 Nc6 d4 e5 dxe5 f6
B00	Riemann Defense, Nimzovich Defense	e4 Nc6 d4 e5 dxe5 Nxe5 f4 Nc6
B00	Keres Attack, Nimzovich Defense	e4 Nc6 d4 e5 dxe5 Nxe5 Nc3
B00	Paulsen Attack, Nimzovich Defense	e4 Nc6 d4 e5 dxe5 Nxe5 Nf3
B00	Herford Gambit, Nimzovich Defense	e4 Nc6 d4 e5 dxe5 Qh4
B00	French Connection, Nimzovich Defense	e4 Nc6 d4 e6
B00	Neo-Mongoloid Defense, Nimzovich	e4 Nc6 d4 f6
B00	Pirc Connection, Nimzovich Defense	e4 Nc6 d4 g6
B00	Breyer Defense, Nimzovich	e4 Nc6 Nc3 Nf6
B00	Williams Variation, Nimzovich	e4 Nc6 Nf3 d6
B00	Franco-Nimzovich Variation	e4 Nc6 Nf3 e6
B00	Colorado Defense, Nimzovich; Lean Variation	e4 Nc6 Nf3 f5
B00	Colorado Counter Accepted, Nimzovich Defense	e4 Nc6 Nf3 f5 exf5
B00	El Columpio Defense, Nimzovich Defense	e4 Nc6 Nf3 Nf6 e5 Ng4
B02	Alekhine’s Defense; B02	e4 Nf6
B02	Krejcik Variation, Alekhine	e4 Nf6 Bc4
B02	Fried Fox, Alekhine; Krejcik Gambit	e4 Nf6 Bc4 Nxe4 Bxf7+
B02	Maroczy Variation, Alekhine	e4 Nf6 d3
B02	Welling Variation, Alekhine	e4 Nf6 e5 Nd5 b3
B02	Kmoch Variation, Alekhine	e4 Nf6 e5 Nd5 Bc4 Nb6 Bb3 c5 d3
B02	Hunt Gambit, Alekhine; Two Pawn Attack	e4 Nf6 e5 Nd5 c4
B02	Steiner Variation, Alekhine	e4 Nf6 e5 Nd5 c4 Nb6 b3
B02	Lasker Variation, Alekhine	e4 Nf6 e5 Nd5 c4 Nb6 c5
B02	Mikenas Gambit, Alekhine	e4 Nf6 e5 Nd5 c4 Nb6 c5 Nd5 Bc4 e6 Nc3 d6 Nxd5 exd5 Bxd5
B02	Matsukevich Gambit, Alekhine	e4 Nf6 e5 Nd5 c4 Nb6 c5 Nd5 Nc3 Nxc3 dxc3 d6 Bg5
B03	B03	e4 Nf6 e5 Nd5 d4
B03	Wall Variation, Alekhine	e4 Nf6 e5 Nd5 d4 c5
B03	Balogh Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Bc4
B03	Hunt Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 c5
B03	Four Pawns Attack; Chase V	e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4
B03	Trifunovic Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 Bf5
B03	Cambridge Gambit, Alekhine	e4 Nf6 e5 Nd5 d4 d6 c4 Nb6 f4 g5
B04	B04	e4 Nf6 e5 Nd5 d4 d6 Nf3
B05	B05	e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4
B05	Flohr Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4 Be2 c6
B05	Alekhine Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4 c4
B04	Panov Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Nf3 Bg4 h3
B04	Larsen Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Nf3 dxe5
B04	Alburt Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Nf3 g6
B04	Keres Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Nf3 g6 Bc4 Nb6 Bb3 Bg7 a4
B04	Karpov Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Nf3 g6 c4 Nb6 h3 Bg7 Be2
B04	Schmid Variation, Alekhine	e4 Nf6 e5 Nd5 d4 d6 Nf3 Nb6
B02	Buntin Gambit, Alekhine	e4 Nf6 e5 Nd5 e6
B02	Buckley Attack, Alekhine	e4 Nf6 e5 Nd5 Na3
B02	Saemisch Attack, Alekhine	e4 Nf6 e5 Nd5 Nc3
B02	Mokele Mbembe; Knight’s Tour	e4 Nf6 e5 Ne4
B02	Retreat; Brooklyn Variation, Alekhine	e4 Nf6 e5 Ng8
B02	Everglades Defense, Alekhine	e4 Nf6 e5 Ng8 d4 f5
B02	Scandanavian Variation, Alekhine	e4 Nf6 Nc3 d5
B02	Myers Gambit, Alekhine	e4 Nf6 Nc3 d5 d3 dxe4 Bg5
B02	Spielmann Variation, Alekhine	e4 Nf6 Nc3 d5 e5 Nfd7 e6
B02	Noch Gambit, Alekhine	e4 Nf6 Nc3 d5 exd5
B02	Geschev Gambit, Alekhine	e4 Nf6 Nc3 d5 exd5 c6
B02	John Tracy Gambit, Alekhine	e4 Nf6 Nf3
B00	Adams Defense	e4 Nh6
B00	Wild Bull Defense	e4 Nh6
A02	Bird’s Opening; Dutch Attack	f4
A03	A03	f4 d5
A03	Sturm; Mujannah	f4 d5 c4
A03	Prokofiev Gambit, Bird	f4 d5 e4 dxe4 d3
A03	Williams Gambit, Bird	f4 d5 e4 dxe4 Nc3
A02	From’s Gambit, Bird	f4 e5
A02	Canard Formation; Double Duck	f4 f5 d4 d5
A02	Pawn Thrust Attack, Bird	f4 f5 d4 d5
A02	Swiss Gambit, Bird	f4 f5 e4 fxe4 Nc3 Nf6 g4
A02	Hobbs Gambit, Bird	f4 g5
A02	Batavo Polish Attack, Bird	f4 Nf6 Nf3 g6 b4
A03	Horsefly Defense, Bird	f4 Nh6
A04	Reti; Zukertort; A04	Nf3
A06	A06	Nf3 d5
A06	Nimzovich Opening, Reti	Nf3 d5 b3
A06	Bloodgood Gambit, Reti	Nf3 d5 b3 c5 e4 dxe4 Ne5
A06	Santasiere’s Folly, Reti	Nf3 d5 b4
A09	Reti; Landstrasser G; Wolf G; A09	Nf3 d5 c4
A09	London V; New York V, Reti	Nf3 d5 c4 c6 b3 Nf6 Bg2 e6 Bb2 Nbd7
A09	Benoni Reversed; Wing Blumenfeld	Nf3 d5 c4 d4
A09	Reti Polonaise	Nf3 d5 c4 d4 b4
A09	Penguin Variation, Reti	Nf3 d5 c4 d4 Rg1
A09	Reti Gambit Accepted	Nf3 d5 c4 dxc4
A09	Neo-Catalan, Reti	Nf3 d5 c4 e6 g3
A06	Old Indian Attack	Nf3 d5 d3
A06	Tennison G; Lemberg G; Abonyi G	Nf3 d5 e4
A07	Barcza Opening, Reti; A07	Nf3 d5 g3
A08	A08	Nf3 d5 g3 c5
A06	Reversed Mexican Defense, Reti	Nf3 d5 Nc3
A06	Ampel Variation, Reti	Nf3 d5 Rg1
A04	Wade Defense	Nf3 d6
A06	Improved Lisitsin G, Reti	Nf3 f5 d3
A04	Lisitsin Gambit; Polish Gambit	Nf3 f5 e4
A04	Rydel-Bloodgood Gambit	Nf3 f5 e4 exf4 Ne5
A04	Polish G; Dalesio G; Pirc-Lisitsin G	Nf3 f5 e4 fxe4 Ng5
A04	Herrstrom Gambit, Reti	Nf3 g5
A04	Oberndorfer Gambit; Reti	Nf3 g5
A04	Lessing Defense	Nf3 Nc6
A05	King’s Indian Attack; Reti; Zukertort; A05	Nf3 Nf6

We will continue to update this page so it’s as accurate as possible.

ECO Codes Table (Encyclopaedia of Chess Openings)

Garry Kasparov MasterClass Review (Updated 2022)

Draw in Chess: 7 Types of Draw Rules Explained (For Beginners)

Editorial Staff

Related Posts

Charlotte Chess Center: Hub For Chess Enthusiasts In North Carolina

Best Chess Commentators To Listen To In 2023

About The Chess Journal

Support

Categories