Limit eval-based history updates#1055
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codedeliveryservice merged 1 commit intoMay 29, 2026
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If we encounter the same position again at high depth, we skip the eval-difference update and let the depth-based history handle it later, this should minimize the uncertain bias introduced by the feedback loop of doing it again. Elo | 2.34 +- 1.80 (95%) SPRT | 8.0+0.08s Threads=1 Hash=16MB LLR | 2.90 (-2.25, 2.89) [0.00, 3.00] Games | N: 39490 W: 10256 L: 9990 D: 19244 Penta | [173, 4613, 9905, 4883, 171] https://recklesschess.space/test/15083/ Elo | 2.35 +- 1.73 (95%) SPRT | 40.0+0.40s Threads=1 Hash=64MB LLR | 3.01 (-2.25, 2.89) [0.00, 3.00] Games | N: 36296 W: 8949 L: 8704 D: 18643 Penta | [21, 4062, 9742, 4297, 26] https://recklesschess.space/test/15086/ Bench: 4014185
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If we encounter the same position again at high depth, we skip the eval-difference update and let the depth-based history handle it later, this should minimize the uncertain bias introduced by the feedback loop of doing it again.
Elo | 2.34 +- 1.80 (95%)
SPRT | 8.0+0.08s Threads=1 Hash=16MB
LLR | 2.90 (-2.25, 2.89) [0.00, 3.00]
Games | N: 39490 W: 10256 L: 9990 D: 19244
Penta | [173, 4613, 9905, 4883, 171]
https://recklesschess.space/test/15083/
Elo | 2.35 +- 1.73 (95%)
SPRT | 40.0+0.40s Threads=1 Hash=64MB
LLR | 3.01 (-2.25, 2.89) [0.00, 3.00]
Games | N: 36296 W: 8949 L: 8704 D: 18643
Penta | [21, 4062, 9742, 4297, 26]
https://recklesschess.space/test/15086/
Bench: 4014185