Introduce Triple Extensions #5027
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bench 1394701
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clang-format 17 needs to be run on this PR. (execution 7756606087 / attempt 1) |
bench 1394701
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vondele
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Feb 3, 2024
Search parameters were tuned at 60+0.6 8-thread. Link to the tuning attempt: https://tests.stockfishchess.org/tests/view/65b84e8dc865510db0276030 The most significant change is the triple extension parameter, from 200 to 78. This presumably improves scaling. Additionally, the value < singularBeta - 2 condition for double extensions was removed. This can simply be considered a parameter tweak from 2 to 0. Passed VVLTC: https://tests.stockfishchess.org/tests/view/65baec69c865510db0278f19 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 26136 W: 6564 L: 6305 D: 13267 Ptnml(0-2): 2, 2413, 7977, 2676, 0 Passed VVLTC vs passed PR official-stockfish#5027: https://tests.stockfishchess.org/tests/view/65bc2adfc865510db027a561 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 52968 W: 13372 L: 13046 D: 26550 Ptnml(0-2): 4, 4944, 16265, 5264, 7 STC Elo estimate: https://tests.stockfishchess.org/tests/view/65be5514c865510db027cbc5 closes official-stockfish#5029 Bench: 1478189
Viren6
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Feb 12, 2024
This replaces singularquietLMR with triple instead of double extending non-capture ttmoves that have value far below singularBeta. This threshold value is initially set to 200, there is scope for more scaling by reducing it as occured with double extensions. Passed STC: https://tests.stockfishchess.org/tests/view/65b683b8c865510db0274074 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 222912 W: 58141 L: 57535 D: 107236 Ptnml(0-2): 1063, 26244, 56154, 27014, 981 Passed LTC: https://tests.stockfishchess.org/tests/view/65bae6d4c865510db0278eb5 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 66306 W: 16825 L: 16440 D: 33041 Ptnml(0-2): 40, 7374, 17952, 7735, 52 closes official-stockfish#5027 bench 1394701
Viren6
added a commit
to Viren6/Stockfish
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Feb 12, 2024
This replaces singularquietLMR with triple instead of double extending non-capture ttmoves that have value far below singularBeta. This threshold value is initially set to 200, there is scope for more scaling by reducing it as occured with double extensions. Passed STC: https://tests.stockfishchess.org/tests/view/65b683b8c865510db0274074 LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 222912 W: 58141 L: 57535 D: 107236 Ptnml(0-2): 1063, 26244, 56154, 27014, 981 Passed LTC: https://tests.stockfishchess.org/tests/view/65bae6d4c865510db0278eb5 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 66306 W: 16825 L: 16440 D: 33041 Ptnml(0-2): 40, 7374, 17952, 7735, 52 closes official-stockfish#5027 bench 1394701
Viren6
pushed a commit
to Viren6/Stockfish
that referenced
this pull request
Feb 12, 2024
Search parameters were tuned at 60+0.6 8-thread. Link to the tuning attempt: https://tests.stockfishchess.org/tests/view/65b84e8dc865510db0276030 The most significant change is the triple extension parameter, from 200 to 78. This presumably improves scaling. Additionally, the value < singularBeta - 2 condition for double extensions was removed. This can simply be considered a parameter tweak from 2 to 0. Passed VVLTC: https://tests.stockfishchess.org/tests/view/65baec69c865510db0278f19 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 26136 W: 6564 L: 6305 D: 13267 Ptnml(0-2): 2, 2413, 7977, 2676, 0 Passed VVLTC vs passed PR official-stockfish#5027: https://tests.stockfishchess.org/tests/view/65bc2adfc865510db027a561 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 52968 W: 13372 L: 13046 D: 26550 Ptnml(0-2): 4, 4944, 16265, 5264, 7 STC Elo estimate: https://tests.stockfishchess.org/tests/view/65be5514c865510db027cbc5 closes official-stockfish#5029 Bench: 1478189
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This replaces singularquietLMR with triple instead of double extending non-capture ttmoves that have value far below singularBeta. This threshold value is initially set to 200, there is scope for more scaling by reducing it as occured with double extensions.
Passed STC:
https://tests.stockfishchess.org/tests/view/65b683b8c865510db0274074
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 222912 W: 58141 L: 57535 D: 107236
Ptnml(0-2): 1063, 26244, 56154, 27014, 981
Passed LTC:
https://tests.stockfishchess.org/tests/view/65bae6d4c865510db0278eb5
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 66306 W: 16825 L: 16440 D: 33041
Ptnml(0-2): 40, 7374, 17952, 7735, 52
bench 1394701