EDIT: Binaries added (I suck at releasing)
This release features the usual improved NNUE and search. The NNUE network is now trained on an updated and enlarged 1.88B dataset of DFRC selfplay positions and now uses six king buckets. There are also many search patches.
In standard chess, this release is 40 elo stronger in selfplay, and 61 elo stronger in a gauntlet against other opponents of similar strength.
Elo | 39.78 +- 15.91 (95%)
Conf | 5.0+0.05s Threads=1 Hash=8MB
Games | N: 1000 W: 327 L: 213 D: 460
Penta | [11, 75, 225, 167, 22]
In DFRC, this release is 61 elo stronger in selfplay.
Elo | 60.59 +- 16.01 (95%)
Conf | 5.0+0.05s Threads=1 Hash=8MB
Games | N: 1002 W: 359 L: 186 D: 457
Penta | [13, 73, 195, 168, 52]
Based on the strength gains, v2.40 should have a blitz elo of about 3560, LTC elo of about 3460, and FRC elo of about 3780 (on CCRL scales).
A note on executables: Different executables for windows have been compiled for different instruction sets. AVX512 is the fastest, followed by AVX2, and POPCNT. Pick the fastest one that doesn't crash on your computer.