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Chess engine: Alexandria 2.4 NNUE

on

Chess engine: Alexandria 
Author: PGG106  Rating CEDR=2907

v.2.4
Featuring better chess than ever
STC:
ELO | 109.76 +- 15.32 (95%)
CONF | 10.0+0.10s Threads=1 Hash=8MB
GAMES | N: 1272 W: 582 L: 193 D: 497

LTC:
ELO | 119.90 +- 23.66 (95%)
CONF | 60.0+0.60s Threads=1 Hash=64MB
GAMES | N: 512 W: 233 L: 63 D: 216

What's Changed
scale nmp reduction factor with depth by @PGG106 in #22
scale nmp reduction linearly by @PGG106 in #23
minor qsearch cleanup by @PGG106 in #24
Probe cleanup by @PGG106 in #25
Probe cleanup2 by @PGG106 in #26
Change default net to a 768->512->1 architecture by @PGG106 in #27
Increase lmr reduction when not improving by @PGG106 in #28

Alexandria 2.4 NNUE download

Individual statistics: Alexandria 2.1.0 - 75 games CEDR  (+ 11,= 19,- 45), 27.3 %

Fritz 17                      :   6 (+  0,=  5,-  1), 41.7 %
Stockfish 15                  :   6 (+  0,=  1,-  5),  8.3 %
Fisherov 0.98k                :   5 (+  1,=  0,-  4), 20.0 %
Wasp 5.50                     :   1 (+  0,=  0,-  1),  0.0 %
Arasan 23.3                   :   5 (+  0,=  0,-  5),  0.0 %
Black Marlin 5.0              :   1 (+  0,=  0,-  1),  0.0 %
ChessKISS 1.8                 :   4 (+  4,=  0,-  0), 100.0 %
Rebel 15x2                    :   1 (+  0,=  0,-  1),  0.0 %
Berserk 9-dev3                :   2 (+  0,=  0,-  2),  0.0 %
StockfishMZ Iccf 240522       :   4 (+  0,=  0,-  4),  0.0 %
Fritz 15                      :   1 (+  0,=  0,-  1),  0.0 %
Protej 0.6.3                  :   1 (+  1,=  0,-  0), 100.0 %
Crystal 060622                :   2 (+  0,=  1,-  1), 25.0 %
Berserk 9                     :   2 (+  0,=  0,-  2),  0.0 %
Journeyman 2.1                :   6 (+  0,=  5,-  1), 41.7 %
Fisherov chess monk 1.2       :   2 (+  0,=  0,-  2),  0.0 %
CorChess 210622               :   6 (+  0,=  0,-  6),  0.0 %
Gargantua 1.0                 :   7 (+  1,=  2,-  4), 28.6 %
Smallbrain 4.0                :   7 (+  0,=  3,-  4), 21.4 %
Odonata 0.6.2                 :   6 (+  4,=  2,-  0), 83.3 %


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