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New version chess engine: Stormphrax 4.1.0

on
 


Stormphrax, UCI chess engine implemented NNUE
Rating CEDR=3519

v.4.1.0:
large tuning run of all params
various search improvements
as standard, other miscellaneous tweaks and fixes
Minor release this time, as progress has been somewhat slow - search behaviour has changed fairly dramatically, but the network is the same. Some speedups in NNUE inference, though!

Results against Stormphrax 4.0.0
STC:

Elo   | 38.23 +- 6.01 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=32MB
Games | N: 3002 W: 525 L: 196 D: 2281
Penta | [2, 139, 935, 378, 47]
LTC:

Elo   | 26.81 +- 7.79 (95%)
Conf  | 60.0+0.60s Threads=1 Hash=128MB
Games | N: 1000 W: 106 L: 29 D: 865
Penta | [1, 23, 378, 94, 4]
FRC STC:

Elo   | 47.78 +- 10.02 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=32MB
Games | N: 1500 W: 350 L: 145 D: 1005
Penta | [8, 72, 405, 237, 28]
Elo testing done with OpenBench's 8moves_v3 book for standard chess, and 3moves_FRC for FRC.
Results are obtained from self-play and will likely not scale perfectly to games against other opponents :)



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