NCM plays each Stockfish dev build 20,000 times against Stockfish 15. 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 | 145369149620591f7205faaa7f5ee44bdd5ce15e |
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| Author | Steinar H. Gunderson |
| Date | 2026-01-01 14:52:01 UTC |
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Fix feature check
Use _POSIX_C_SOURCE to check for PTHREAD_MUTEX_ROBUST support. The latter is a enum, not a defined variable.
closes https://github.com/official-stockfish/Stockfish/pull/6510
No functional change
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