Chess Plisco is a representation of a chess position in Perl. It also contains a UCI compatible chess engine. You can challenge the engine most of the time at https://lichess.org/@/plisco-bot.
It only works with Perl versions that are compiled with support for 64 bit integers!
The software is stable but still considered work in progress.
Since it is reasonably fast and offers a lot of functionality needed for chess engines, it can be used for rapid prototyping of a chess engine. Writing a basic implementation of the AlphaBeta algorithm with Chess::Plisco will not require more than 30 lines of code.
The library also has a very high test coverage so that you can probably use it as a reference implementation for your own experiments and tests.
Plisco 1.0.1 wkat's new?
What's Changedupdate files by @gflohr in #40
fix mate handling in transposition table by @gflohr in #41
improve time management by @gflohr in #43
add moving pawn to occupancy by @gflohr in #44
Author: Guido Flohr
Plisco 0.4 JA vs other engines:
| CT800 1.46 | 0/4 | -4 | 4 games |
| YuliGM Strong 180824 | 0/4 | -4 | 4 games |
| JigSaw 6.0 | 0/4 | -4 | 4 games |
| SF-PRO 18.09.2024 | 0/4 | -4 | 4 games |
| Rems 150824 | 0/4 | -4 | 4 games |
| Catto 0.12.3 | 1.5/3 | +0 | 3 games |
| Dodecahedron 0.0.1.2 JA | 1/3 | -1 | 3 games |
| Heimdall 1.0.0 | 0/3 | -3 | 3 games |
| Stockfish dev-20241001 | 0/3 | -3 | 3 games |
| Yuliana 5.0 | 0/3 | -3 | 3 games |
| Stockfish 17 | 0/3 | -3 | 3 games |
| LazySMP 2.0 | 2/2 | +2 | 2 games |
| Starzix 5.0 | 0/2 | -2 | 2 games |
| Seawall 20240926 | 0/2 | -2 | 2 games |
| RubiChess 20240817 | 0/2 | -2 | 2 games |
| Vafra 14.12.2 Stockfish | 0/2 | -2 | 2 games |
| Uralochka 3.41a JA | 0/2 | -2 | 2 games |
| Puffin 4.0 | 0/2 | -2 | 2 games |
| Peacekeeper 3.01 | 0/2 | -2 | 2 games |
| Wasp 7.00 | 0/2 | -2 | 2 games |
| Snail Chess 1.0.1 | 0/2 | -2 | 2 games |
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