Rusty-rival 1.0.42 - new version chess engine

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Rusty Rival - UCI (Universal Chess Interface) chess engine written in Rust.
Author:Chris Moreton

The engine can be about 50% faster if compiled on the machine on which it will be run in order to take advantage of cpu-specific instructions. 

Rusty-rival 1.0.42 what's new?

NNUE Net Trained on 3x More Data
+215 ± 17 Elo vs v1.0.40 (2000 games, 1+0.1 TC)

Changes
NNUE net retrained on 635M Stockfish depth-9 positions (up from 204M in v1.0.40)
Same architecture: Chess768 → 256×2 → 1, SCReLU, i16 quantization
600 superbatches with AdamW, cosine LR decay, WDL proportion 0.75
Match Results
v1.0.42 vs v1.0.40: 1418W - 319L - 263D (2000 games)
Score: 0.775 | Elo: +215 ± 17 | Draw ratio: 13.2%
Cumulative Improvement
v1.0.40 was +65 Elo vs HCE (v1.0.39)
v1.0.42 is +215 Elo vs v1.0.40
Estimated ~+280 Elo over hand-crafted evaluation



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