Dev Builds » 20170902-0759

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.


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 ID 5ba43735221105108ea0a5d8204e9a2925b6aa7e
Author syzygy
Date 2017-09-02 07:59:04 UTC
Prevent Stockfish from exiting if DTZ table is not present During TB initialisation, Stockfish checks for the presence of WDL tables but not for the presence of DTZ tables. When attempting to probe a DTZ table, it is therefore possible that the table is not present. In that case, Stockfish should neither exit nor report an error. To verify the bug: $ ./stockfish setoption name SyzygyTable value <path_to_WDL_dir> position fen 8/8/4r3/4k3/8/1K2P3/3P4/6R1 w - - go infinite Could not mmap() /opt/tb/regular/KRPPvKR.rtbz $ (On my system, the WDL tables are in one directory and the DTZ tables in another. If they are in the same directory, it will be difficult to trigger the bug.) The fix is trivial: check the file descriptor/handle after opening the file. No functional change.
Copyright 2011–2024 Next Chess Move LLC