Fairy-Stockfish 14.0.1 XQ

Published: Nov 19, 2021 by

A new version of Fairy-Stockfish is available, see the release notes.

This release is specifically for providing built-in NNUE networks for Xiangqi and Janggi, so that the NNUE evaluation can be used without the need for any additional downloads or configuration. This release of course still supports all other variants, but for those you can also use the smaller standard releases without built-in NNUE.

With NNUE evaluation, playing strength for Xiangqi and Janggi is far surpassing classical Fairy-Stockfish, and reaching super-human level. See the test results below for comparison against Fairy-Stockfish without NNUE.

Xiangqi

STC (10’‘+0.1’’)

ELO: 541.10 +-95.1 (95%) LOS: 100.0%
Total: 200 W: 184 L: 1 D: 15

LTC (30’‘+0.3’’)

ELO: 541.10 +-107.7 (95%) LOS: 100.0%
Total: 200 W: 186 L: 3 D: 11

Janggi

STC (10’‘+0.1’’)

ELO: 350.27 +-73.4 (95%) LOS: 100.0%
Total: 200 W: 172 L: 19 D: 9

LTC (30’‘+0.3’’)

ELO: 297.95 +-67.2 (95%) LOS: 100.0%
Total: 200 W: 167 L: 28 D: 5

Files of the release

  • The .nnue files do not need to be downloaded. They are only included in the release so that the build can be reproduced from source if desired.
  • .exe are Windows executables, the files without extensions are Linux binaries.
  • Use bmi2 versions for best performance on modern hardware, or fairy-stockfish-largeboard_x86-64.exe for best compatibility.
  • This release does not contain non-largeboard binaries, since they would not support Xiangqi and Janggi.

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