Dev Builds » 20200824-1009

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 14. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN

Commit

Commit ID 843a961a8c10d5949e04718b829e3b3d5adeedb4
Author Vizvezdenec
Date 2020-08-24 10:09:04 UTC
Introduce countermove based pruning for qsearch This patch continues work of previous patch in introducing pruning heuristics in qsearch by analogy to main search, now with countermove based pruning. Idea is that if move is late enough and is quite check (we do generate them in qsearch) and has bad enough countermove history - prune it. passed STC https://tests.stockfishchess.org/tests/view/5f41220287a5c3c63d8f53c5 LLR: 2.93 (-2.94,2.94) {-0.25,1.25} Total: 35944 W: 4127 L: 3929 D: 27888 Ptnml(0-2): 196, 2970, 11459, 3134, 213 passed LTC https://tests.stockfishchess.org/tests/view/5f41862f87a5c3c63d8f53e8 LLR: 2.95 (-2.94,2.94) {0.25,1.25} Total: 138448 W: 7655 L: 7252 D: 123541 Ptnml(0-2): 145, 6247, 56043, 6638, 151 closes https://github.com/official-stockfish/Stockfish/pull/3058 Bench: 3610676
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