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New version chess engines: Polyfish 20230410, ShashChess 31.1, BrainLearn 23.1 NNUE

 

Polyfish is a UCI chess engine based on Stockfish. Rating CEDR=3726
It is identical to Stockfish with the added capability of handling Polyglot,

Polyfish supports two polyglot BIN books at the same time. The second book is only probed if the first book has no moves for the given position. The engine starts searching only if no move is found in either the first book or the second book.

Individual statistics: Polyfish 230202 - 312 games (+ 87,=224,-  1), 63.8   %
Critter 1.6a                  :   8 (+  7,=  1,-  0), 93.8 %
SugaR AI 2.50                 :   1 (+  1,=  0,-  0), 100.0 %
Komodo 13.02                  :   2 (+  1,=  1,-  0), 75.0 %
RofChade 3.0                  :   2 (+  1,=  1,-  0), 75.0 %
StockfishMZ 170522            :   2 (+  0,=  2,-  0), 50.0 %
Fisherov chess monk 1.2       :  12 (+  0,= 12,-  0), 50.0 %
Demolito 2021-10-21           :   2 (+  2,=  0,-  0), 100.0 %
Revenge 3.0                   :   6 (+  4,=  2,-  0), 83.3 %
Teal Oracle                   :   1 (+  1,=  0,-  0), 100.0 %
Nebula-vortex 1.0             :   1 (+  0,=  1,-  0), 50.0 %
DarkSister 1.9a               :   1 (+  0,=  1,-  0), 50.0 %
Berserk 10                    :   2 (+  1,=  1,-  0), 75.0 %
AI 27.0                       :   1 (+  0,=  1,-  0), 50.0 %
YuliGM PrO 4.0                :   1 (+  0,=  1,-  0), 50.0 %
Seer 2.6                      :   2 (+  2,=  0,-  0), 100.0 %
Kayra 1.7                     :  10 (+  0,= 10,-  0), 50.0 %
Cool Iris 5.2                 :   1 (+  0,=  1,-  0), 50.0 %
RubiChess 20221203            :   2 (+  0,=  2,-  0), 50.0 %
Cheese 3.1.1                  :   2 (+  2,=  0,-  0), 100.0 %
Kookaburra 1.03a              :  10 (+  0,= 10,-  0), 50.0 %
Little Goliath 3.16           :   2 (+  2,=  0,-  0), 100.0 %
Dragon 3.2                    :  10 (+  2,=  8,-  0), 60.0 %
Uralochka 3.39d               :   2 (+  1,=  1,-  0), 75.0 %
Rebel 16.1                    :   2 (+  1,=  1,-  0), 75.0 %
Blue Marlin 15.6              :  11 (+  1,= 10,-  0), 54.5 %
BrainLearn 21.1               :  10 (+  0,=  9,-  1), 45.0 %
Koivisto 9.0                  :   2 (+  0,=  2,-  0), 50.0 %
Koivisto 9.0 Ipman            :   2 (+  1,=  1,-  0), 75.0 %
Stockfish 20230125            :   6 (+  0,=  6,-  0), 50.0 %
Corchess 230125               :   2 (+  0,=  2,-  0), 50.0 %
Viridithas 7.0.0              :   7 (+  6,=  1,-  0), 92.9 %
Protej 0.6.4                  :   6 (+  6,=  0,-  0), 100.0 %
BlackCore 5.1                 :   6 (+  5,=  1,-  0), 91.7 %
Vafra 12.3 Cfish              :   6 (+  2,=  4,-  0), 66.7 %
CorChess 20230125             :   4 (+  0,=  4,-  0), 50.0 %
Winter 2.0                    :   6 (+  6,=  0,-  0), 100.0 %
Eman 8.70                     :  17 (+  0,= 17,-  0), 50.0 %
Igel 3.4.0                    :   8 (+  2,=  6,-  0), 62.5 %
Stockfish 20230202            :   4 (+  0,=  4,-  0), 50.0 %
ShashChess 28                 :  16 (+  0,= 16,-  0), 50.0 %
Smallbrain 7.0                :   6 (+  2,=  4,-  0), 66.7 %
Charisma Light 2              :   6 (+  0,=  6,-  0), 50.0 %
RukChess 3.0.15 NNUE2         :   2 (+  2,=  0,-  0), 100.0 %
Stockfish 230202              :   2 (+  0,=  2,-  0), 50.0 %
Stockfish 230125 Ivec         :   2 (+  0,=  2,-  0), 50.0 %
Bagatur 3.7                   :   2 (+  2,=  0,-  0), 100.0 %
Mess 0.1.0                    :   2 (+  2,=  0,-  0), 100.0 %
Koivisto 9.2 hotfix           :   2 (+  1,=  1,-  0), 75.0 %
CorChess 20230210             :   4 (+  0,=  4,-  0), 50.0 %
Caissa 1.6                    :   2 (+  2,=  0,-  0), 100.0 %
Predator X5                   :   2 (+  0,=  2,-  0), 50.0 %
Stockfish 20230203            :   2 (+  0,=  2,-  0), 50.0 %
Velvet 5.1.0                  :   2 (+  2,=  0,-  0), 100.0 %
Fat Fritz 2                   :  10 (+  3,=  7,-  0), 65.0 %
Patzer AI 020223              :   4 (+  0,=  4,-  0), 50.0 %
Berserk 11                    :   2 (+  0,=  2,-  0), 50.0 %
Clover 3.3.1                  :   2 (+  2,=  0,-  0), 100.0 %
Caissa 1.6.3                  :   2 (+  2,=  0,-  0), 100.0 %
Rebel 16.2                    :  10 (+  2,=  8,-  0), 60.0 %
Stockfish 20230218            :   6 (+  0,=  6,-  0), 50.0 %
Berserk 11.1                  :   8 (+  3,=  5,-  0), 68.8 %
Koivisto 9.2                  :  10 (+  3,=  7,-  0), 65.0 %
Charisma Blitz                :   2 (+  0,=  2,-  0), 50.0 %
Ethereal 14.00 NNUE           :  10 (+  1,=  9,-  0), 55.0 %
Charisma 250223               :   8 (+  1,=  7,-  0), 56.2 %
CorChess 20230226             :   4 (+  0,=  4,-  0), 50.0 %


github:https://github.com/khalid-a-omar/Polyfish/releases/tag/20230410





ShashChess - UCI chess engine.
Rating CEDR=3720 (01.04.2023)

ShashChess is a free UCI chess engine derived from Stockfish family chess engines. 

v.31.1:
Again refined Shashin theory
Updated and very refined testsuite
Stockfish patch
Apr 7, 2023
Depth Tweak and tuning
tunes reduction related parameters, and introduces more reduction on found good moves.
credit for this patch goes also to candirufish Yoshie2000 dubslow peregrineshahin Vizvezdenec

Individual statistics: ShashChess 28 - 504 games (+133,=365,-  6), 62.6 %
Critter 1.6a                  :   6 (+  5,=  1,-  0), 91.7 %
Komodo 13.02                  :   2 (+  2,=  0,-  0), 100.0 %
RofChade 3.0                  :   8 (+  3,=  5,-  0), 68.8 %
SlowChess 2.9                 :   8 (+  2,=  6,-  0), 62.5 %
Fisherov chess monk 1.2       :  22 (+  1,= 19,-  2), 47.7 %
Demolito 2021-10-21           :   2 (+  2,=  0,-  0), 100.0 %
Revenge 3.0                   :  14 (+  2,= 12,-  0), 57.1 %
Booot 7.0                     :   2 (+  2,=  0,-  0), 100.0 %
Seer 2.6                      :   8 (+  5,=  3,-  0), 81.2 %
Kayra 1.7                     :  18 (+  0,= 18,-  0), 50.0 %
Berserk 20221129              :   2 (+  1,=  1,-  0), 75.0 %
Stockfish 15.1                :  18 (+  0,= 18,-  0), 50.0 %
RubiChess 20221203            :   8 (+  3,=  5,-  0), 68.8 %
Cheese 3.1.1                  :   2 (+  2,=  0,-  0), 100.0 %
Kookaburra 1.03a              :  18 (+  0,= 18,-  0), 50.0 %
Little Goliath 3.16           :   2 (+  2,=  0,-  0), 100.0 %
Dragon 3.2                    :  20 (+  1,= 19,-  0), 52.5 %
Velvet 5.0.0                  :   4 (+  3,=  1,-  0), 87.5 %
Minic 3.33                    :   4 (+  2,=  2,-  0), 75.0 %
Uralochka 3.39d               :  10 (+  7,=  3,-  0), 85.0 %
Rebel 16.1                    :   6 (+  4,=  2,-  0), 83.3 %
Eman 8.60                     :   4 (+  0,=  4,-  0), 50.0 %
Blue Marlin 15.6              :  18 (+  0,= 18,-  0), 50.0 %
BrainLearn 21.1               :  18 (+  2,= 16,-  0), 55.6 %
Koivisto 9.0                  :   4 (+  2,=  2,-  0), 75.0 %
Polyfish 230115               :   4 (+  0,=  4,-  0), 50.0 %
Caissa 1.5                    :   4 (+  2,=  2,-  0), 75.0 %
Koivisto 9.0 Ipman            :   2 (+  1,=  1,-  0), 75.0 %
Stockfish 20230125            :   8 (+  0,=  8,-  0), 50.0 %
Corchess 230125               :   2 (+  0,=  2,-  0), 50.0 %
Viridithas 7.0.0              :  14 (+ 11,=  3,-  0), 89.3 %
Protej 0.6.4                  :   6 (+  6,=  0,-  0), 100.0 %
BlackCore 5.1                 :   6 (+  3,=  3,-  0), 75.0 %
Vafra 12.3 Cfish              :  10 (+  3,=  7,-  0), 65.0 %
CorChess 20230125             :   6 (+  0,=  6,-  0), 50.0 %
Winter 2.0                    :   6 (+  5,=  1,-  0), 91.7 %
Eman 8.70                     :  20 (+  0,= 20,-  0), 50.0 %
Igel 3.4.0                    :  14 (+  8,=  6,-  0), 78.6 %
Stockfish 20230202            :   4 (+  0,=  4,-  0), 50.0 %
Polyfish 230202               :  18 (+  0,= 17,-  1), 47.2 %
Smallbrain 7.0                :   6 (+  5,=  1,-  0), 91.7 %
Charisma Light 2              :   6 (+  0,=  5,-  1), 41.7 %
Stockfish 230202              :   2 (+  0,=  2,-  0), 50.0 %
Stockfish 230125 Ivec         :   2 (+  0,=  2,-  0), 50.0 %
CorChess 20230210             :   4 (+  0,=  4,-  0), 50.0 %
Caissa 1.6                    :   2 (+  2,=  0,-  0), 100.0 %
Velvet 5.1.0                  :   4 (+  4,=  0,-  0), 100.0 %
Fat Fritz 2                   :  12 (+  2,= 10,-  0), 58.3 %
Patzer AI 020223              :   8 (+  1,=  7,-  0), 56.2 %
Berserk 11                    :   2 (+  1,=  1,-  0), 75.0 %
Clover 3.3.1                  :   2 (+  2,=  0,-  0), 100.0 %
Caissa 1.6.3                  :   4 (+  3,=  1,-  0), 87.5 %
Rebel 16.2                    :  14 (+  5,=  9,-  0), 67.9 %
Stockfish 20230218            :   6 (+  0,=  5,-  1), 41.7 %
Berserk 11.1                  :  12 (+  1,= 11,-  0), 54.2 %
Stockfish 20230224            :   2 (+  0,=  2,-  0), 50.0 %
Koivisto 9.2                  :  14 (+  6,=  8,-  0), 71.4 %
Charisma Light 1.0            :   2 (+  0,=  2,-  0), 50.0 %
Stockfish 20230128            :   4 (+  0,=  4,-  0), 50.0 %
CorChess 20230202             :   2 (+  0,=  2,-  0), 50.0 %
Charisma Blitz                :   4 (+  0,=  4,-  0), 50.0 %
Ethereal 14.00 NNUE           :  14 (+  8,=  6,-  0), 78.6 %
Stockfish 20230209            :   2 (+  0,=  1,-  1), 25.0 %
Berserk 20230130b             :   2 (+  0,=  2,-  0), 50.0 %
Charisma 250223               :  10 (+  1,=  9,-  0), 55.0 %
CorChess 20230226             :   6 (+  0,=  6,-  0), 50.0 %
Stockfish 20230227            :   2 (+  0,=  2,-  0), 50.0 %
Leptir 280223                 :   2 (+  0,=  2,-  0), 50.0 %

ShashChess 31.1 - download 
github:https://github.com/amchess/ShashChess/releases/tag/31.1



BrainLearn - UCI chess engine
Rating CEDR=3716

BrainLearn is a free, powerful UCI chess engine derived from BrainFish. It is not a complete chess program and requires a UCI-compatible GUI (e.g. XBoard with PolyGlot, Scid, Cute Chess, eboard, Arena, Sigma Chess, Shredder, Chess Partner or Fritz) in order to be used comfortably. 
Read the documentation for your GUI of choice for information about how to use Stockfish with it. 

v.23.1:
Bug fix
Stockfish patch
Depth Tweak and tuning
tunes reduction related parameters, and introduces more reduction on found good moves.
credit for this patch goes also to candirufish Yoshie2000 dubslow peregrineshahin Vizvezdenec

Individual statistics: BrainLearn 19 - 260 games (+ 56,=197,-  7), 59.4 %
Stockfish 15                  :   3 (+  0,=  3,-  0), 50.0 %
Dragon 3                      :   8 (+  0,=  8,-  0), 50.0 %
Fisherov chess monk 1.2       :  25 (+  0,= 24,-  1), 48.0 %
Revenge 3.0                   :   2 (+  1,=  1,-  0), 75.0 %
BigBallz 010922               :   8 (+  2,=  5,-  1), 56.2 %
ProteusSF Piranha 220904      :  10 (+  0,=  8,-  2), 40.0 %
Rebel 15.1a                   :   2 (+  1,=  1,-  0), 75.0 %
Nebula-vortex 1.0             :   8 (+  1,=  6,-  1), 50.0 %
Koivisto 8.16                 :   4 (+  3,=  1,-  0), 87.5 %
Dark Sister 1.9b              :   2 (+  1,=  1,-  0), 75.0 %
StockNemo 5.7.0.0             :   2 (+  2,=  0,-  0), 100.0 %
Marvin 6.1.0                  :   2 (+  1,=  1,-  0), 75.0 %
Alexandria 3.0                :   2 (+  2,=  0,-  0), 100.0 %
Berserk 10                    :   8 (+  3,=  5,-  0), 68.8 %
Caissa 1.1                    :   2 (+  2,=  0,-  0), 100.0 %
Fire NN 1072022               :   2 (+  2,=  0,-  0), 100.0 %
Frozenight 5.1.0              :   2 (+  2,=  0,-  0), 100.0 %
Lynx 0.12.0                   :   2 (+  2,=  0,-  0), 100.0 %
Trinket 3.0.0                 :   2 (+  2,=  0,-  0), 100.0 %
Stockfish 101022 Ivec         :   4 (+  0,=  4,-  0), 50.0 %
CorChess 101022               :  13 (+  1,= 11,-  1), 50.0 %
Solista Attack 2              :  15 (+  0,= 15,-  0), 50.0 %
Fatalii 0.3.1                 :   2 (+  2,=  0,-  0), 100.0 %
Francesca 0.32                :   2 (+  1,=  1,-  0), 75.0 %
Halogen 11                    :  11 (+  5,=  6,-  0), 72.7 %
Polyfish 221009               :  12 (+  0,= 12,-  0), 50.0 %
Mayhem 7.4                    :   4 (+  4,=  0,-  0), 100.0 %
RubiChess 20221001            :  12 (+  4,=  8,-  0), 66.7 %
ShashChess 25                 :  14 (+  1,= 13,-  0), 53.6 %
Eman 8.40                     :  23 (+  0,= 23,-  0), 50.0 %
Smallbrain 6.0                :   5 (+  5,=  0,-  0), 100.0 %
Stockfish 161022              :  16 (+  0,= 16,-  0), 50.0 %
AI 27.0                       :   1 (+  0,=  1,-  0), 50.0 %
RapChess 2022-10-17           :   1 (+  1,=  0,-  0), 100.0 %
BlackCore 2.0                 :   1 (+  1,=  0,-  0), 100.0 %
Viridithas 3.0.0              :   1 (+  1,=  0,-  0), 100.0 %
Vafra 12.2 Cfish              :   1 (+  0,=  1,-  0), 50.0 %
ShashChess 25.1               :   1 (+  0,=  1,-  0), 50.0 %
YuliGM PrO 4.0                :   1 (+  0,=  1,-  0), 50.0 %
Stockfish 081022              :   6 (+  1,=  4,-  1), 50.0 %
SugaR AI 131022               :   2 (+  0,=  2,-  0), 50.0 %
Dark Sister 1.9d              :   6 (+  0,=  6,-  0), 50.0 %
CorChess 171022               :   2 (+  0,=  2,-  0), 50.0 %
Fritz 18 Neuronal             :   2 (+  2,=  0,-  0), 100.0 %
pHoBiA 4.0                    :   2 (+  0,=  2,-  0), 50.0 %
Spectral Tactical 1.40        :   2 (+  0,=  2,-  0), 50.0 %
Stockfish 14.1                :   2 (+  0,=  2,-  0), 50.0 %


BrainLearn progress:
PlEngineCEDRScoreGames(%)
18Brainlearn 20.1 vulkan3730.535.505268.27
48BrainLearn 203716.4321.0049065.51
68BrainLearn 21.13711.5499.5076465.38
79BrainLearn 193709.6154.0025959.46
126BrainLearn 19.2.13701.879.0011866.95
141BrainLearn 19.13699.151.008460.71
151BrainLearn 19.23696.854.007869.23
173BrainLearn 20.23694.2280.5045861.24
184BrainLearn 183692.4209.0033662.20
195BrainLearn 0611223690.550.009652.08
222BrainLearn 173681.8150.0026456.82
242BrainLearn 213674.7101.5014868.58
287BrainLearn 9.03611.613.501875.00


BrainLearn 23.1 - download
github:https://github.com/amchess/BrainLearn/releases/tag/23


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New version chess engine: Raid 3.6 TacticaL RetreaT (Stockfish derivative)

Raid - is a Stockfish derivative . Rating CEDR=3743 Raid 3.2 - results: Polyfish 240114 7/14 +0 14 Games Hazard 4.21 DuaL 6.5/12 +1 12 Games Leptir 100124 6/12 +0 12 Games Arasan 24.1 7.5/10 +5 10 Games Uralochka 3.41 dev1 6/10 +2 10 Games Caissa 1.16 5.5/10 +1 10 Games SF-PRO 07.01.2024 5/10 +0 10 Games Stockfish 20240117 5/10 +0 10 Games Minic 3.41 7/8 +6 8 Games Pawn 3.0 6.5/8 +5 8 Games Texel 1.11 5.5/8 +3 8 Games RubiChess 20240112 5/8 +2 8 Games CorChess 20240103 4/8 +0 8 Games Counter 5.5 4.5/6 +3 6 Games Obsidian 10.0 3.5/6 +1 6 Games Fisherov chess monk 1.2 3/6 +0 6 Games Avalanche 2.1.0 3.5/4 +3 4 Games Starzix 4.0 2.5/4 +1 4 Games Cool Iris 11.80 2/4 +0 4 Games Blue Marlin 15.7 2/4 +0 4 Games AI 28.0 2/4 +0 4 Games
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Chess engine: Incognito 8.2 (experimental version of CorChess)

  Eduard Nemeth: "by Solista: This engine is identical in code to 8.01 but without Random Op. MultiPV mode. Some users only want to use normal MultiPV mode. Download Win 64-Bit (avx2, bmi2, sse41, source code).". Rating CEDR=3741 Incognito 5 PRO engine results SF CorChess 010124 25.5/50 +1 50 Games Predator AI 23/46 +0 46 Games Polyfish 240105 22.5/44 +1 44 Games Sawfish 2TC 21/42 +0 42 Games SF PB 070124 14.5/29 +0 29 Games Dragon 3.3 15.5/26 +5 26 Games Stockfish 20240108 12/24 +0 24 Games Deep Blue 20230628 12/24 +0 24 Games AbbyStein 2.8 12/24 +0 24 Games Berserk 12.1 11/20 +2 20 Games Cool Iris 11.80 10.5/20 +1 20 Games Ethereal 14.25 10.5/16 +5 16 Games Stockfish 20231231 8/16 +0 16 Games Raid 3.1 8/16 +0 16 Games SF-PRO 25.12.2023 8/16 +0 16 Games Killfish 071223 8/16 +0 16 Games Crystal 7 7/14 +0 14 Games TACTICAL 161223 6/12 +0 12 Games Fisherov chess monk 1.2 6/12 +0 12 Games Seer 2.8.0 6.5/10 +3 10 Games SF-PRO 07.01.2024 5/10 +0 10 Games Incognito 8.2 download
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Yuliirma 4.0 wins Strong Engines Tournament (Tests by Jörn Gronemann, Heide, 2024.04.26 Time: 3'+3")

Our next test, a large tournament in which over 1,000 games were played, was won by the Yuliirma 4.0 chess engine. This engine is only available to our testers. In second place is the official version of Stockfish 16.1 and in third place is Stockfish 20240421 . GPU NVIDIA  RTX 3060 ti. GUI-Banksia, For Every Engine only 1 CPU and 512 Hashtables, Book - short ICCF book,  6TBs. 🕒🕒Time 3'+3"   1050 (!!!) tournaments games download   💾 All games CEDR  317.321 games download  01.04.2024  (3'+3")    @chessenginesdiary
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New Chess Engines Diary Rating (CEDR) - 06.04.2024, over 317 thousand games!

  In March there were as many as 16,713 new games . In total there are 317.321 games! The new CEDR ranking was calculated based on these games. All 317.321 games download New Chess Engines Diary Rating CEDR – 06.04.2024 Chess Engines Diary Rating CEDR – 06.04.2024 generated with Ordo 0.9.9 (anchor Critter 1.6a with 3230) All 317.321 games, Time:3’+3” Minimum 250 games Pl Engine Rating Score Games (%) 1 Stockfish 20231104 3760.8 221.00 301 73.42 2 CorChess 20240122 3750.7 149.00 278 53.60 3 ShashChess 34 3747.5 156.50 260 60.19 Stockfish 16.1 3745.6 660.00 1111 59.41 4 Lc0 BT4 3712.6 148.50 263 56.46 5 Dragon 3.3 3711.5 1537.00 2939 52.30 6 Berserk 20240311 3692.4 224.00 374 59.89 7 Caissa
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