Chess engine: Svart 6.0.0 fixed

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Svart, a free and open source UCI chess engine written in Rust.
Author: Crippa   Rating CEDR=3251

v.6.0.0:
I am happy to present Svart 6, featuring threaded input handling, LazySMP and other improvements to the engine.

Elo gain
Using the 8moves_v3.epd book in self-play:

8+0.08 (STC)
ELO   | 20.77 +- 8.38 (95%)
CONF  | 8.0+0.08s Threads=1 Hash=32MB
GAMES | N: 2512 W: 554 L: 404 D: 1554
60+0.60 (LTC)
ELO   | 12.98 +- 9.36 (95%)
CONF  | 60.0+0.60s Threads=1 Hash=128MB
GAMES | N: 1500 W: 241 L: 185 D: 1074
4 Thread Scaling
ELO   | 120.05 +- 10.39 (95%)
CONF  | 8.0+0.08s Threads=4 Hash=128MB
GAMES | N: 2512 W: 1127 L: 292 D: 1093
Noteable changes
Node count TM (#50)
TM formula improvement (#51)
Asp. windows improvement (#52)
Threaded input handling (#55)
LazySMP (#58)
Full changelog: v5.0.0...v6.0.0

Binaries
Svart's release scheme follows the microarchitecture levels.
x86_64-v3 is the fastest and recommended on modern systems.
x86_64-v2 is less fast but is compatible with CPUs pre-Haswell/Excavator.
x86_64-v1 is the slowest but compatible with almost anything.
See the readme for instructions on how to compile these versions yourself.


Individual statistics: Svart 4                   : 3134  114 (+ 28,= 16,- 70), 31.6  %
Critter 1.6a                  :   6 (+  2,=  3,-  1), 58.3 %
ECE 20.1                      :   1 (+  1,=  0,-  0), 100.0 %
Fritz 17                      :   2 (+  0,=  0,-  2),  0.0 %
Monolith 2                    :   1 (+  0,=  1,-  0), 50.0 %
Rodent NNUE 1.0               :   1 (+  1,=  0,-  0), 100.0 %
NiCim 3.4                     :   1 (+  1,=  0,-  0), 100.0 %
Fisherov chess monk 1.2       :   4 (+  0,=  0,-  4),  0.0 %
Cheng 4.41                    :   1 (+  1,=  0,-  0), 100.0 %
StockNemo 5.7.0.0             :   1 (+  0,=  0,-  1),  0.0 %
Crystal 5 KWK                 :   2 (+  0,=  1,-  1), 25.0 %
Kimbo 1.0.0                   :   1 (+  1,=  0,-  0), 100.0 %
MadChess 3.2 beta             :   1 (+  0,=  0,-  1),  0.0 %
Stockfish 15.1                :   2 (+  0,=  0,-  2),  0.0 %
Dragon 3.2                    :   2 (+  0,=  0,-  2),  0.0 %
Charisma Diamond              :   2 (+  0,=  0,-  2),  0.0 %
Rebel 16.2                    :   2 (+  0,=  0,-  2),  0.0 %
Berserk 11.1                  :   2 (+  0,=  0,-  2),  0.0 %
YuliGM PrO 5.0                :   2 (+  0,=  0,-  2),  0.0 %
Flounder 0.4.0.0              :   1 (+  1,=  0,-  0), 100.0 %
Arasan 23.5                   :   2 (+  0,=  0,-  2),  0.0 %
Knightx 3.7b                  :   1 (+  0,=  1,-  0), 50.0 %
SFT                           :   2 (+  0,=  0,-  2),  0.0 %
SFT-PB                        :   2 (+  0,=  0,-  2),  0.0 %
Stockfish 20230410            :   2 (+  0,=  0,-  2),  0.0 %
Polyfish 20230421             :   2 (+  0,=  0,-  2),  0.0 %
Stockfish 20230422            :   4 (+  0,=  0,-  4),  0.0 %
Tenax 0.7.9                   :   6 (+  0,=  3,-  3), 25.0 %
Stockfish 20230407            :   2 (+  0,=  0,-  2),  0.0 %
CorChess 20230423             :   2 (+  0,=  0,-  2),  0.0 %
Zangdar 2.15.03               :   4 (+  4,=  0,-  0), 100.0 %
Polaris 1.5.0                 :   4 (+  4,=  0,-  0), 100.0 %
Princhess 0.10.0              :   2 (+  1,=  1,-  0), 75.0 %
SF PB 220423                  :   2 (+  0,=  0,-  2),  0.0 %
Caissa 1.8                    :   4 (+  0,=  0,-  4),  0.0 %
SFT 26.04.2023                :   2 (+  0,=  1,-  1), 25.0 %
Mess 0.2.0                    :   2 (+  2,=  0,-  0), 100.0 %
Rice 5.0.0                    :   2 (+  0,=  1,-  1), 25.0 %
CatroPOLY 1.7 20230505        :   2 (+  0,=  0,-  2),  0.0 %
CorChess dev-20230504         :   2 (+  0,=  0,-  2),  0.0 %
Polyfish 230426               :   2 (+  0,=  0,-  2),  0.0 %
Stockfish dev-20230503 Ivec   :   2 (+  0,=  0,-  2),  0.0 %
SFT-BIN-CTG 07.05.2023        :   2 (+  0,=  0,-  2),  0.0 %
Ice4 v3                       :   2 (+  2,=  0,-  0), 100.0 %
Kuma 1.1                      :   2 (+  1,=  1,-  0), 75.0 %
Apotheosis 4.0.1              :   2 (+  2,=  0,-  0), 100.0 %
NIppolit                      :   2 (+  1,=  0,-  1), 50.0 %
Fire 4292023                  :   2 (+  0,=  0,-  2),  0.0 %
Flounder 0.5.0.0              :   2 (+  0,=  1,-  1), 25.0 %
Roc 2.0.0                     :   2 (+  1,=  1,-  0), 75.0 %
CorChess dev-20230423         :   2 (+  0,=  0,-  2),  0.0 %
Peacekeeper 1.4               :   2 (+  1,=  0,-  1), 50.0 %
Polaris 1.6.0                 :   2 (+  1,=  1,-  0), 75.0 %
Dark SisTer 4.6               :   2 (+  0,=  0,-  2),  0.0 %

Svart 6.0.0 fixed download


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