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Example code of akondas/chess.php

Informations about the package chess.php

Chess.php

chess.php is a PHP chess library that is used for chess move generation/validation, piece placement/movement, and check/checkmate/stalemate detection - basically everything but the AI.

NOTE: this is a port of chess.js for php, froked from ryanhs/chess.php

Minimum PHP Version Latest Stable Version Build Status MIT License

Installation

use composer with composer require akondas/chess.php
or put in your composer.json

Example Code

The code below plays a complete game of chess ... randomly.

Performance

There is still a lot to do in this topic.
akondas/php-grandmaster is a good place to start experiment ;)

Chess::move()

iteration mean comment
1 548.819μs initial
2 447.973μs replace fen with json_encode in history position (inThreefoldRepetition cache)
3 340.375μs replace fen with json_encode in generateMoves
4 333.145μs add boardHash calculation on make/undo move
5 25.917μs :fire: add cache for moveToSAN method

All versions of chess.php with dependencies

PHP Build Version
Package Version
Requires php Version ^7.2
ext-json Version *
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