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.
| Host | Duration | Avg Base NPS | Games | WLD | Standard Elo | Ptnml(0-2) | Gamepair Elo |
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| ID | Host | Base NPS | Games | WLD | Standard Elo | Ptnml(0-2) | Gamepair Elo | CLI | PGN |
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| Commit ID | 0b9068d5105faa5ece9db713d2e50717b5682787 |
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| Author | Joost VandeVondele |
| Date | 2026-01-15 21:13:26 UTC |
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Fix integer overflow.
scaledBonus can reach rather large values,
which lead to an int overflow as detected anematode using ubsan.
(see https://github.com/official-stockfish/Stockfish/issues/6505#issuecomment-3696988889)
It can be fixed by scaling nominator and denominator appropriately,
which doesn't change the bench, as long as there is no overflow.
First overflow/bench change happens at depth 26
closes https://github.com/official-stockfish/Stockfish/pull/6540
Bench: 2050811
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