Introduce Correction History Quad Extensions #5767
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bench 1574831
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just FYI, I think this patch has some impact on mate finding, interesting, but nothing too drastic
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xu-shawn
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Feb 2, 2025
Also modifies the double and triple extension margins with the correction history adjustment. STC Elo Estimate: Elo: -4.40 ± 1.4 (95%) LOS: 0.0% Total: 60000 W: 15230 L: 15990 D: 28780 Ptnml(0-2): 264, 7495, 15168, 6883, 190 nElo: -8.48 ± 2.8 (95%) PairsRatio: 0.91 https://tests.stockfishchess.org/tests/view/6783a3786ddf09c0b4b703a1 Passed 1st VVLTC: LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 35736 W: 9354 L: 9088 D: 17294 Ptnml(0-2): 4, 3191, 11212, 3457, 4 https://tests.stockfishchess.org/tests/view/6783a3336ddf09c0b4b7039b Passed 2nd VVLTC: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 36394 W: 9515 L: 9225 D: 17654 Ptnml(0-2): 1, 3271, 11364, 3559, 2 https://tests.stockfishchess.org/tests/view/678395e26ddf09c0b4b70345 closes official-stockfish#5767 Bench: 1567166
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Also modifies the double and triple extension margins with the correction history adjustment.
STC Elo Estimate:
Elo: -4.40 ± 1.4 (95%) LOS: 0.0%
Total: 60000 W: 15230 L: 15990 D: 28780
Ptnml(0-2): 264, 7495, 15168, 6883, 190
nElo: -8.48 ± 2.8 (95%) PairsRatio: 0.91
https://tests.stockfishchess.org/tests/view/6783a3786ddf09c0b4b703a1
Passed 1st VVLTC:
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 35736 W: 9354 L: 9088 D: 17294
Ptnml(0-2): 4, 3191, 11212, 3457, 4
https://tests.stockfishchess.org/tests/view/6783a3336ddf09c0b4b7039b
Passed 2nd VVLTC:
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 36394 W: 9515 L: 9225 D: 17654
Ptnml(0-2): 1, 3271, 11364, 3559, 2
https://tests.stockfishchess.org/tests/view/678395e26ddf09c0b4b70345
bench 1574831