Dev Builds » 20180727-0838

You are viewing an old NCM Stockfish dev build test. You may find the most recent dev build tests using Stockfish 15 as the baseline here.

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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 313f4037339142f0c3488f511c57ca7a400ea8a5
Author Miguel Lahoz
Date 2018-07-27 08:38:20 UTC
Tweak KingFlank when king is on edge files This tweak excludes files D and E from the KingFlank bitboard when our king is on the A or H files respectively. As far as I can tell, this affects two things: the calculation for CloseEnemies and PawnlessFlank. Aside from filtering out slightly less relevant attacks in the flank, I suspect this helps with king prophylaxis, avoiding attacks and moving towards the center when the pawns start to come off. STC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 56755 W: 12881 L: 12489 D: 31385 http://tests.stockfishchess.org/tests/view/5b58a94c0ebc5902bdb88c72 LTC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 130205 W: 22536 L: 21957 D: 85712 http://tests.stockfishchess.org/tests/view/5b58b7580ebc5902bdb89029 How to continue: Tweaking the two bonuses mentioned might give some gain, although as far as I can tell, CloseEnemies is very sensitive to even small changes. Closes https://github.com/official-stockfish/Stockfish/pull/1705 Bench: 5026009
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