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Home » Chess Resources and Tools » Xiphos Chess Engine: Total Guide

Xiphos Chess Engine: Total Guide

Editorial Staff by Editorial Staff
in Chess Engines, Chess Programming, Chess Resources and Tools

The Xiphos Chess Engine is among the rising engines that are paving their way through the industry. It was first released on February 28, 2018, and gained a favorable response from its users. Since then, Xiphos has been continually improved to achieve its best state.

Xiphos has an initial Elo of 3200, although all signs indicate that it is significantly undervalued. Xiphos has accrued 56 Elo marks through the opening ten matches of Division 2. For a system that was only launched only a few years ago, if it maintains its efficiency to the finish of the competition, it can definitely surpass 3300 Elo.

The new and freshly released Xiphos was among the Best Chess Engine Tournament’s newest competitors when Season 12 first began. After Ethereal, it was advanced as the runner-up, but an upgrade among levels brought it a tremendous lift, and it was raised again, this time to a higher level.

Page Navigation

  • Who Built The Xiphos Chess Engine
  • Xiphos Features
    • 1. Efficacy of Lookup
      • Strengthening iteratively
      • Browse for Principal Variations
      • Employing threads for parallel searching
      • Window aspirations
    • 2. Table of transpositions
      • Common Hash Table
    • 3. Move Sequencing
      • SEE
      • Heuristic for history
      • Individual Extensions (0.2)
      • Internally Deepening Iteratively.
      • Death Heuristic
      • Heuristic for counterstrategy
      • MVV/LVA
    • 4. Pruning
      • ProbCut
      • Pruning out futility
    • 5. Cutbacks
      • Delayed Move Discounts
      • Razoring
  • Is Xiphos a UCI Chess Engine?
  • Conclusion

Who Built The Xiphos Chess Engine

When reading Garry Kasparov’s work entitled “Deep Thinking: Where Machine Intelligence Ends and Human Creativity Begins,” Milos Tatarevic was reminded of his love of desktop chess from his early life. He wondered how difficult it might be to create an engine powerful enough to defeat the renowned Deep Blue and decided to give it a shot. And now, it is continuously progressing into an engine that chess players wouldn’t want to miss.

Xiphos Features

Xiphos Chess Engine makes use of the best features it can offer. With its newly improved components, it enables you to have an optimal experience!

1. Efficacy of Lookup

Strengthening iteratively

Iterative deepening has shown to be unexpectedly useful. It has been observed that ID is quicker than looking for the specified depth right away, even when you are about to explore to that level. It is caused by flexible move sequencing methods like the history heuristic, PV, and rebuttal movements identified in earlier iterations.

Browse for Principal Variations

A Principal Variation or PV is an improvement to Alpha-Beta that uses invalid or zero-window checks on none PV-nodes to demonstrate whether its movement is weaker or not than a rating that has already been determined to be acceptable by the PV.

Employing threads for parallel searching

Modern engines utilize Parallel Search to expedite searches. If many threads access and modify non-atomic global information at the same time, necessitating numerous read and write phases, synchronization problems arise for chess systems employing threads for PVs. To ensure that a software thread is secure and to retain the match data as locals, developers prevent using global identifiers.

Window aspirations

You can use aspiration windows to condense the searching field. This method uses a window surrounding the predicted result (often following the previous iteration in ID) as the alpha-beta boundaries.

2. Table of transpositions

Common Hash Table

Several concurrent programs or threads using different engines or processor units utilize a hash table. It is a crucial information component in a variety of issues. Given that You may use a hash table to translate a variety of dispersed information formats, it is highly crucial for parallel computations.

3. Move Sequencing

SEE

A Static Exchange Evaluation (SEE) determines whether the expected assessment shift is wasted or acquired by looking at the effects of a number of swaps on a particular tile following a specific movement. SEE helps minimize “poor” catches and checks, including futility trimming, quiescence searching, and notably quiescence lookup combined with delta trimming.

Heuristic for history

A History Heuristic is a versatile movement sequencing approach that bases its decisions on the amount of cutoffs a specific action results in, regardless of the location at which it is performed.

Individual Extensions (0.2)

Singular Extensions are domain-neutral enhancements with the goal of extending the search at anticipated PV and Cut-Nodes if a movement appears to be significantly superior to all other options.

Internally Deepening Iteratively.

By exploring the present location to a decreased level with IID, an intelligent movement to examine first is found. The wisest choice from that lookup is utilized as the initial movement at the actual level.

Death Heuristic

A Killer Heuristic is a flexible move sequencing method. It prioritizes advances that resulted in a beta-cutoff and classifies them as killer movements.

Heuristic for counterstrategy

This heuristic is simple to use and implies that a lot of movements have natural feedback. The killer and countermove heuristic complement each other due to the counterstrategy heuristic’s tendency to replace positions with the same range from the base with the most recent movement.

MVV/LVA

MVV/LVA is an easy heuristic for generating or sensibly ordering capture movements.

4. Pruning

ProbCut

ProbCut is a 1994-created targeted search improvement to the alpha-beta method. It enables the exclusion of potentially unnecessary subtrees from in-depth searching.

Pruning out futility

It eliminates movements that don’t have a chance of increasing alpha, which necessitates some estimation of a technique’s prospective worth.

5. Cutbacks

Delayed Move Discounts

It reduces search costs by minimizing movements arranged near the end of potential fail-low regions.

Razoring

Razoring is meant to be a form of advance pruning in which you examine a subtree to a shallower detail instead of discarding the whole subtree. The benefit is that you save the majority of the money while taking considerably less threat than if you were to remove whole subtrees.

Is Xiphos a UCI Chess Engine?

Xiphos is a Universal Chess Interface or UCI which connects user terminals via an accessible data transmission standard. Chess engines can connect with various software, notably Graphical User Interfaces, via a UCI, an accessible communication system.

UCI is now supported by nearly all modern chess applications, allowing you to switch between software solutions’ chess engines and user interfaces. Every chess engine that supports UCI can be plugged into any chess user interface that supports UCI.

Conclusion

Before choosing an effective play, a chess engine typically evaluates hundreds of possible possibilities. They are growing more sophisticated as technology and software methods improve each year.

Xophi Chess Engine has proven that despite being a “novice” compared to the other chess engines, it can surely provide you with the best experience you are searching for. Its unique and advantageous features will indeed guide and teach you new information and extraordinary moves!

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  • Home
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