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New version chess engine: Avalanche 2.0.0 NNUE (Windows, Mac and Linux)


Avalanche - UCI (NNUE Chess Engine)
Author: SnowballSH  Rating CEDR=3224

v.2.0.0:
The list of things changed along with test results can be found here

Improvements:
More efficient TT storage, using atomic ordering. Significant when Thread > 1.
New perspective-aware NNUE architecture. Current net is xuebeng, trained on 600 million net008b (which is trained on 200 million v1.5.0 data) data. (+~100 elo)
Numerous search improvements (+~25 elo)
Eval scalings (+~10 elo)
Bug fixes (+~15 elo)
Overall, v2.0.0 is around 140-180 elo stronger than 1.5.0 during self-play. Combining with tests against Defenchess 2.2 shows Avalanche 2.0.0 is around 3320-3370 in CCRL Blitz and 4CPU 40/15, and about 3240-3290 in 1CPU 40/15.

Since this version, I am including binaries from v1 to v4. "v3" is about equivalent for "haswell" in previous releases. If you have a newer CPU, please try "v4," and if it crashes then use "v3". "v3" is likely to work on most modern (post-2013) CPUs.


Rating CEDR progres - Avalanche
Pl Engine Rating Score Games %
778 Avalanche 1.5.0 3224.6 129.00 276 46.74
852 Avalanche 1.3.1 3108.4 134.50 275 48.91
894 Avalanche 1.3.0 3064.7 89.00 195 45.64
914 Avalanche 1.2.0 3044.4 98.50 183 53.83
992 Avalanche 1.1.0 2921.9 30.50 100 30.50
1076 Avalanche 0.2.2 2777.9 2.50 26 9.62
1092 Avalanche 0.3a 2756.7 8.50 88 9.66
1605 Avalanche 1.0.0 1623.3 0.00 16 0.00


Github:https://github.com/SnowballSH/Avalanche/releases/tag/v2.0.0
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