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Chess engine: Reckless 0.8.0 dev.4b8cfde JA

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Reckless, a Rust-based UCI chess engine.
Author: Arseniy Surkov   Rating Chess Engines Diary CEDR=3360

v.0.7.0:
Release Notes
The NNUE hidden layer size has been increased from 128 to 384, further improved by adding 4 output buckets (#56) and material scaling (#62). The final architecture is (768 -> 384)x2 -> 1x4.

Changelog
Time management
Time adjustment based on score stability (#50)
Time adjustment based on best move stability (#42)
Performance optimizations
Allocate a quiet move list on the stack (#51)
Implement operation fusion for NNUE (#58)
Optimize accumulator handling (#59)
Various search improvements
History tuning (#39)
Null Move Pruning tuning (#54)
Check extensions before the move loop (#40)
Disable quiescence search pruning for recaptures (#35)
Treat non-winning captures as unfavorable in quiescence search (#57)
Static Exchange Evaluation (#36, #37, #44, and #61)
Fully fractional LMR (#60)
Features
Mate Distance Pruning (#43)
Multi-threaded transposition table initialization (#63)
Full Changelog: v0.6.0...v0.7.0

Self-Play Benchmark Against v0.6.0
STC 8.0+0.08s

Elo   | 172.12 +- 11.31 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=32MB
Games | N: 2000 W: 1007 L: 90 D: 903
Penta | [6, 38, 229, 487, 240]
LTC 40.0+0.4s

Elo   | 154.77 +- 13.83 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=128MB
Games | N: 1002 W: 449 L: 30 D: 523
Penta | [0, 16, 136, 263, 86]

Reckless 0.7.0 vs other engines:
Xiphos 0.6.1 JA7.5/12+312 Games
Toga IV 1.1 JA7.5/12+312 Games
Lifish 1.06.5/12+112 Games
Counter 5.56/12+012 Games
Weiss 2.1 JA5.5/12-112 Games
Smallbrain 7.0 JA5.5/8+38 Games
Avalanche 2.1.05.5/8+38 Games
Sirius 8.05/8+28 Games
Gogobello 3.05/8+28 Games
BlackCore 6.04.5/8+18 Games
StockDory Starfish 0.14.5/8+18 Games
Stash 35.26 JA4/8+08 Games
Carp 3.0.12.5/8-38 Games
Sloth 2.06/6+66 Games
Kobol 1.16/6+66 Games
Bgrassy dev.5f18d51 JA6/6+66 Games
Zangdar 2.305/6+46 Games
Quanticade Aurora 0.84.5/6+36 Games
Molybdenum 4.04/6+26 Games
Quanticade 0.8 JA3/6+06 Games
Stockfish 20240820 Ivec1/6-46 Games


Jim Ablett compiles:


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