Chess engine: Crystal 9, Stockfish derivatives

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Crystal is a free, powerful UCI chess engine derived from Stockfish. 
Author: Joseph Ellis, Rating Chess Engines Diary CEDR=3753

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 22102420/40+040 Games
Stockfish 1719/38+038 Games
JigSaw 6.017/34+034 Games
Yuliana 5.5015/30+030 Games
Artemis 4TR14/28+028 Games
Obsidian 14.05 SE13.5/26+126 Games
Raid 3.6 TR13/26+026 Games
BrainLearn 3011/22+022 Games
HypnoS 220824bis10/20+020 Games
SF-PRO 18.11.20249/18+018 Games
SF-PRO2 18.11.20249/18+018 Games
Yuliana 6.09/18+018 Games
SugaR AI 2.709/18+018 Games
Contact 99/18+018 Games
YuliGM Strong 1808249/18+018 Games
YuliGM STRONG X9/18+018 Games
Berserk 202411199/16+216 Games
Stockfish 20241113 Ivec8/16+016 Games
ShashChess 378/16+016 Games
CorChess 202411148/16+016 Games
Private19sf8/16+016 Games
 


Crystal 9  -  download  mirror 

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