Crystal is a free, powerful UCI chess engine derived from Stockfish.
Author: Joseph Ellis, Rating Chess Engines Diary CEDR=3754
v.9:
Brought up to date with upstream Stockfish.
Reverted to granular TT.
Various small code cleanups & optimizations.
Bench: 19209860
Crystal 8 JA vs other engines:
| Big Yuli GM 221024 | 20/40 | +0 | 40 Games |
| Stockfish 17 | 19/38 | +0 | 38 Games |
| JigSaw 6.0 | 17/34 | +0 | 34 Games |
| Yuliana 5.50 | 15/30 | +0 | 30 Games |
| Artemis 4TR | 14/28 | +0 | 28 Games |
| Obsidian 14.05 SE | 13.5/26 | +1 | 26 Games |
| Raid 3.6 TR | 13/26 | +0 | 26 Games |
| BrainLearn 30 | 11/22 | +0 | 22 Games |
| HypnoS 220824bis | 10/20 | +0 | 20 Games |
| SF-PRO 18.11.2024 | 9/18 | +0 | 18 Games |
| SF-PRO2 18.11.2024 | 9/18 | +0 | 18 Games |
| Yuliana 6.0 | 9/18 | +0 | 18 Games |
| SugaR AI 2.70 | 9/18 | +0 | 18 Games |
| Contact 9 | 9/18 | +0 | 18 Games |
| YuliGM Strong 180824 | 9/18 | +0 | 18 Games |
| YuliGM STRONG X | 9/18 | +0 | 18 Games |
| Berserk 20241119 | 9/16 | +2 | 16 Games |
| Stockfish 20241113 Ivec | 8/16 | +0 | 16 Games |
| ShashChess 37 | 8/16 | +0 | 16 Games |
| CorChess 20241114 | 8/16 | +0 | 16 Games |
| Private19sf | 8/16 | +0 | 16 Games |
Jim Ablett compiles:
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