Obsidian, an UCI chess engine written in c++
Rating Chess Engines Diary CEDR=3740
v.15:
This new version includes a few search patches and a new NNUE architecture, finally with layers.
I dropped support for pre-AVX2, but I might add it back if requested to.
For testers: if you tested 14.24, don't test 15.0, they are exactly the same.
Obsidian 15.0 vs 14.0 (LTC)
Elo | 27.21 +- 4.01 (95%)
Conf | 40.0+0.40s Threads=1 Hash=128MB
Games | N: 7012 W: 2009 L: 1461 D: 3542
Penta | [7, 576, 1796, 1116, 11]
Obsidian 14.14 SE vs - other engines:
| Integral v6 | 18/30 | +6 | 30 Games |
| PlentyChess 3.0.1 | 17/30 | +4 | 30 Games |
| RubiChess 20240817 | 17/30 | +4 | 30 Games |
| Berserk 20241119 | 15/30 | +0 | 30 Games |
| Caissa 1.21 | 14.5/30 | -1 | 30 Games |
| Alexandria 7.1.0 | 14/30 | -2 | 30 Games |
Neural network
Obsidian evaluates positions with a neural network trained on Lc0 data.
Jim Ablett compiles:
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