Arasan 23.2 has been released. It is available from
https://www.arasanchess.org
Changes in Arasan 23.2:
1) Fixes to singular extension code.
2) Change static null pruning margins.
3) Fix compile errs in tracing code.
4) Don't reset debug prefix when executing "new" command.
5) Fix myname feature (for CECP mode).
6) Package correct network file for Windows.
7) Build fixes for Cygwin
Some tests of this version:
Against 23.1 (Windows, 2:0+1 TC)
Score of Arasan23.2 vs Arasan23.1: 284 - 100 - 616 [0.592] 1000
... Arasan23.2 playing White: 158 - 46 - 296 [0.612] 500
... Arasan23.2 playing Black: 126 - 54 - 320 [0.572] 500
... White vs Black: 212 - 172 - 616 [0.520] 1000
Elo difference: 64.7 +/- 13.2, LOS: 100.0 %, DrawRatio: 61.6 %
Against 23.0:
Score of Arasan23.2 vs Arasan23.0: 298 - 76 - 626 [0.611] 1000
... Arasan23.2 playing White: 162 - 25 - 313 [0.637] 500
... Arasan23.2 playing Black: 136 - 51 - 313 [0.585] 500
... White vs Black: 213 - 161 - 626 [0.526] 1000
Elo difference: 78.4 +/- 12.9, LOS: 100.0 %, DrawRatio: 62.6 %
Note: there were some reported issues with version 23.1 performing poorly on Windows. I believe this was due to a corrupted network file in the Windows release package. I have updated that file (arasan23.1.zip) with the correct .nnue file. The above tests were run with the corrected file.
I am also aware of a reported issue with Arasan not terminating cleanly, so for example cutechess will report "Warning: EngineProcess: Destroyed while process is still running." I have been working on a fix for this but it will require more testing, so I am not releasing that code yet.
