Chess engine: Igel 3.4.0 NNUE

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Igel - UCI chess engine, Rating CEDR (3'+3") = 3478 (16 place)
Author : Volodymyr Shcherbyna (Fork of GreKo 2018.01)

v.3.4.0:
What's new:
fixing major bug in accumulator handling for null moves
avoid heap objects (std::vector) in search function to reduce heap fragementation
switching to pure nnue evaluation
new network architecture HalfKav2_hm
new network ign-3-debc71a4
Regression run against Igel 3.3.0:
Long Time Control With Increment

Individual statistics: Igel 3.1.0 - 432 games (+175,=173,- 84), 60.5  %
Schooner 2.2                  :   4 (+  3,=  1,-  0), 87.5 %
Laser 1.7                     :   2 (+  0,=  2,-  0), 50.0 %
Critter 1.6a                  :   2 (+  2,=  0,-  0), 100.0 %
Houdini 1.5a                  :   2 (+  2,=  0,-  0), 100.0 %
Fritz 17                      :   4 (+  1,=  3,-  0), 62.5 %
Xiphos 0.6.1                  :   6 (+  3,=  3,-  0), 75.0 %
Raubfisch X48e                :   4 (+  0,=  1,-  3), 12.5 %
SugaR AI 2.50                 :   4 (+  0,=  1,-  3), 12.5 %
Dragon 2.6.1                  :   4 (+  0,=  3,-  1), 37.5 %
Stockfish 15                  :  10 (+  0,=  5,-  5), 25.0 %
Fisherov 0.98k                :   2 (+  0,=  0,-  2),  0.0 %
Lc0 0.29.0-rc0                :   6 (+  0,=  1,-  5),  8.3 %
Pigeon 1.5.1 fix              :   2 (+  1,=  0,-  1), 50.0 %
Lozza 2.2                     :   2 (+  2,=  0,-  0), 100.0 %
Wasp 5.50                     :   4 (+  1,=  3,-  0), 62.5 %
Komodo 13.02                  :   8 (+  2,=  6,-  0), 62.5 %
Arasan 23.3                   :   4 (+  0,=  3,-  1), 37.5 %
Zahak 10.0                    :   4 (+  1,=  3,-  0), 62.5 %
Hiarcs 15.5                   :   4 (+  0,=  4,-  0), 50.0 %
Caligula 1.0b                 :   6 (+  6,=  0,-  0), 100.0 %
Lynx 0.10.0                   :   2 (+  2,=  0,-  0), 100.0 %
Gogobello 3.0                 :   4 (+  1,=  3,-  0), 62.5 %
K2 0.99                       :   2 (+  2,=  0,-  0), 100.0 %
Rodent NNUE 1.0               :   6 (+  6,=  0,-  0), 100.0 %
Stash 33.0                    :   2 (+  1,=  1,-  0), 75.0 %
ChessKISS 1.8                 :   6 (+  5,=  1,-  0), 91.7 %
Gunborg 1.65                  :   4 (+  4,=  0,-  0), 100.0 %
Toga IV                       :   2 (+  0,=  2,-  0), 50.0 %
Tucano 10.00                  :   4 (+  1,=  3,-  0), 62.5 %
RofChade 3.0                  :   2 (+  0,=  1,-  1), 25.0 %
Rebel 15x2                    :   8 (+  5,=  3,-  0), 81.2 %
StockfishMZ 170522            :   2 (+  0,=  2,-  0), 50.0 %
Nalwald 15                    :   2 (+  2,=  0,-  0), 100.0 %
Coiled 1.1                    :   2 (+  0,=  2,-  0), 50.0 %
Colossus 2022a                :   6 (+  5,=  1,-  0), 91.7 %
Seer 2.5                      :   4 (+  0,=  3,-  1), 37.5 %
Berserk 9-dev                 :  10 (+  0,=  6,-  4), 30.0 %
CorChess 290522               :   2 (+  0,=  1,-  1), 25.0 %
Fisherov chess monk 1.1       :   8 (+  0,=  4,-  4), 25.0 %
Bagatur 3.3                   :  16 (+ 12,=  4,-  0), 87.5 %
Vafra 3.3.2                   :   4 (+  4,=  0,-  0), 100.0 %
Leorik 2.1                    :  12 (+ 12,=  0,-  0), 100.0 %
Stockfish 290522              :   4 (+  0,=  1,-  3), 12.5 %
Koivisto 8.9                  :   8 (+  0,=  8,-  0), 50.0 %
Fisherov chess monk SE        :   2 (+  0,=  1,-  1), 25.0 %
Kayra 1.4                     :   2 (+  0,=  1,-  1), 25.0 %
Deep Shredder 13              :   4 (+  2,=  2,-  0), 75.0 %
Fritz 15                      :   4 (+  4,=  0,-  0), 100.0 %
Counter 4.1                   :  16 (+ 10,=  6,-  0), 81.2 %
Journeyman 1.7                :  10 (+ 10,=  0,-  0), 100.0 %
Mayhem 7.3                    :  12 (+ 11,=  1,-  0), 95.8 %
Horowitz 2.2                  :  10 (+ 10,=  0,-  0), 100.0 %
Uralochka 3.36c               :  10 (+  4,=  5,-  1), 65.0 %
Amoeba 3.4                    :   2 (+  1,=  1,-  0), 75.0 %
Combusken 2.0.0               :   2 (+  0,=  1,-  1), 25.0 %
MrBob 1.1.0                   :   2 (+  2,=  0,-  0), 100.0 %
Ethereal 12.75                :   6 (+  2,=  2,-  2), 50.0 %
Slowchess 2.9                 :   8 (+  0,=  5,-  3), 31.2 %
Minic 3.22                    :   6 (+  2,=  4,-  0), 66.7 %
Pedone 3.1                    :   6 (+  0,=  4,-  2), 33.3 %
Fire 8 NN MC.3                :   6 (+  0,=  3,-  3), 25.0 %
Blue Marlin 15.2a             :   4 (+  0,=  3,-  1), 37.5 %
Eubos 2.12                    :   2 (+  2,=  0,-  0), 100.0 %
Journeyman 2.0                :   2 (+  2,=  0,-  0), 100.0 %
Koivisto 8.13                 :   6 (+  0,=  4,-  2), 33.3 %
Marvin 6.0.0                  :   6 (+  2,=  4,-  0), 66.7 %
Vafra 12.0 Cfish              :   2 (+  0,=  1,-  1), 25.0 %
Protej 0.6.3                  :   4 (+  3,=  1,-  0), 87.5 %
Stockfish 070622              :   4 (+  0,=  2,-  2), 25.0 %
Knightx 3.3                   :   4 (+  4,=  0,-  0), 100.0 %
CorChess 080622               :   2 (+  0,=  0,-  2),  0.0 %
Crystal 060622                :   2 (+  0,=  2,-  0), 50.0 %
Eman 8.03                     :   2 (+  0,=  1,-  1), 25.0 %
Berserk 9                     :   2 (+  0,=  1,-  1), 25.0 %
Fisherov chess monk 1.2       :   4 (+  0,=  1,-  3), 12.5 %
Anka 0.6.3                    :   2 (+  2,=  0,-  0), 100.0 %
Francesca 0.31a               :   2 (+  2,=  0,-  0), 100.0 %
Nemorino 6.00                 :   4 (+  1,=  2,-  1), 50.0 %
Clover 3.1                    :   4 (+  1,=  3,-  0), 62.5 %
Defenchess 2.3                :   4 (+  2,=  1,-  1), 62.5 %
CorChess 210622               :   2 (+  0,=  1,-  1), 25.0 %
Alexandria 2.2                :   2 (+  2,=  0,-  0), 100.0 %
Devre 3.0                     :   2 (+  0,=  2,-  0), 50.0 %
Eman 8.10                     :   2 (+  0,=  0,-  2),  0.0 %
ProteusSF RBE 008b            :   2 (+  0,=  1,-  1), 25.0 %
Blunder 8.0.0                 :   2 (+  1,=  1,-  0), 75.0 %
Bagatur 3.4                   :   2 (+  2,=  0,-  0), 100.0 %
Supra 28.0                    :   2 (+  2,=  0,-  0), 100.0 %
Wasp 6.00                     :   4 (+  0,=  4,-  0), 50.0 %
Dragon 3.1 by Komodo          :   2 (+  0,=  1,-  1), 25.0 %
Booot 7.0                     :   2 (+  0,=  1,-  1), 25.0 %
Roc 1.9.1                     :   2 (+  2,=  0,-  0), 100.0 %
Koivisto 8.16                 :   2 (+  0,=  2,-  0), 50.0 %
Fire NN 1072022               :   2 (+  0,=  2,-  0), 50.0 %
Polyfish 221009               :   2 (+  0,=  0,-  2),  0.0 %
AI 27.0                       :   2 (+  0,=  0,-  2),  0.0 %
YuliGM PrO 4.0                :   2 (+  0,=  2,-  0), 50.0 %
Blue Marlin 15.4              :   2 (+  0,=  0,-  2),  0.0 %
Kayra 1.7                     :   2 (+  0,=  1,-  1), 25.0 %
Caissa 1.3                    :   2 (+  1,=  1,-  0), 75.0 %
ShashChess 26                 :   2 (+  0,=  2,-  0), 50.0 %
RubiChess 20221120            :   2 (+  0,=  1,-  1), 25.0 %
Stockfish dev-20221120-d8f320 :   2 (+  0,=  1,-  1), 25.0 %
Stockfish dev-20221123-85ae65 :   2 (+  0,=  0,-  2),  0.0 %
CorChess dev-20221121-ff55c9  :   2 (+  0,=  1,-  1), 25.0 %
Reksio                        :   2 (+  0,=  1,-  1), 25.0 %
KillFish CTR Hybrid v1.4      :   2 (+  0,=  1,-  1), 25.0 %


 Igel 3.4.0 NNUE - download


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