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Chess engine: Lizard 10.2 NNUE

on

 


Lizard - UCI chess engine and NNUE
Rating CEDR=3470

v.10.2:
Has a larger network, some slightly more tuned search parameters, and a couple more fixes and modifications for searches. For the sake of my sanity (and because .NET can't/doesn't autovectorize NNUE code), this requires AVX2.

Use the Lizard-win-x64-pext.exe binary if you have a modern processor. If you don't have PEXT, or have an AMD processor older than Zen 3, you should probably use the non-pext Lizard-win-x64.exe binary. It might be worth trying both though because of how different processors handle PEXT.

10+0.1:
Lizard 10.2 vs Lizard 10.1
Elo   | 89.66 +- 12.52 (95%)
Conf  | 10.0+0.10s Threads=1 Hash=16MB
Games | N: 2004 W: 902 L: 396 D: 706
Penta | [14, 100, 379, 384, 125]
60+0.6:
Lizard 10.2 vs Lizard 10.1
Elo   | 107.16 +- 17.09 (95%)
Conf  | 60.0+0.60s Threads=1 Hash=64MB
Games | N: 1000 W: 448 L: 149 D: 403
Penta | [2, 37, 168, 246, 47]


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