Stormphrax, UCI chess engine implemented NNUE
Rating Chess Engines Diary CEDR=3559
We have been waiting for the next version since June 2024. The Stormphrax engine is among the TOP-64 chess engines and plays in the 2nd league of CEDR chess engines. We will see how strong the new version will play - we will definitely post the results on our website.
v.6.0.0:
Stormphrax 6.0.0 is significantly stronger than 5.0.0 - a longstanding bug in datagen has been fixed, and the entire dataset has been regenerated, resulting in a massively improved (and much larger) network. The regular search tweaks have also happened, along with improvements to time management, and Stormphrax now supports go searchmoves.
Many thanks again to everyone who has contributed CPU time to the OpenBench instance that Stormphrax is tested on - now too many to list, but as always especially @JouanDeag for contributing hosting together with @noobpwnftw for a constant presence of workers :3
Results against Stormphrax 5.0.0
STC:
Elo | 87.03 +- 7.22 (95%)
Conf | 8.0+0.08s Threads=1 Hash=32MB
Games | N: 3024 W: 938 L: 196 D: 1890
Penta | [4, 105, 691, 569, 143]
LTC:
Elo | 77.25 +- 8.43 (95%)
Conf | 60.0+0.60s Threads=1 Hash=128MB
Games | N: 1504 W: 373 L: 44 D: 1087
Penta | [0, 24, 414, 275, 39]
FRC STC:
Elo | 115.83 +- 8.10 (95%)
Conf | 8.0+0.08s Threads=1 Hash=32MB
Games | N: 3004 W: 1209 L: 243 D: 1552
Penta | [2, 108, 533, 640, 219]
DFRC STC:
Elo | 136.13 +- 8.64 (95%)
Conf | 8.0+0.08s Threads=1 Hash=32MB
Games | N: 3022 W: 1409 L: 282 D: 1331
Penta | [6, 100, 439, 693, 273]
Elo testing done with OpenBench's 8moves_v3.epd book for standard chess, 3moves_FRC.epd for FRC, and DFRC.epd for DFRC.
Results are obtained from self-play and will likely not scale perfectly to games against other opponents :)
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