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Chess engine: Clover 2.4

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Clover - UCI chess engine
Author: Luca Metehau Rating JCER=3141 (15'+10")

Clover, an UCI compliant open source chess engine by Luca Metehau, written in C++. Clover was first released in April 2021 [2], hosted on GitHub. In January 2022, Clover 3.0 was released featuring NNUE instead of hand crafted evaluation [source: Chess Program Wiki].

After almost 2 months, Clover 2.4 is here! It is about 100 elo stronger than Clover 2.3.1 in self-play. The strength comes from the new tuner (thanks Andrew Grant for the Tuning Paper), new eval terms, bug fixes and search tweaks.

Individual statistics: Clover 3.0 - 183 games (+ 52,= 68,- 63), 47.0 %, Time: 15'+10"
Komodo 12.1.1                 :   4 (+  1,=  1,-  2), 37.5 %
Fritz 17                      :   8 (+  1,=  5,-  2), 43.8 %
Fire 8 NN MC.3                :   4 (+  0,=  3,-  1), 37.5 %
Gogobello 3.0                 :   1 (+  0,=  1,-  0), 50.0 %
GreKo 2021.08 NNUE            :   2 (+  0,=  1,-  1), 25.0 %
Xiphos 0.6.1                  :   2 (+  0,=  2,-  0), 50.0 %
Tornado Dec 9 2020            :   1 (+  0,=  1,-  0), 50.0 %
Laser 1.7                     :   2 (+  0,=  2,-  0), 50.0 %
RofChade 2.3                  :   2 (+  1,=  0,-  1), 50.0 %
Booot 6.5                     :   2 (+  0,=  2,-  0), 50.0 %
Defenchess 2.3                :   2 (+  0,=  2,-  0), 50.0 %
Roc 2020Aug05                 :   2 (+  1,=  1,-  0), 75.0 %
DanaSah 9.0                   :   1 (+  0,=  1,-  0), 50.0 %
Weiss 2.0                     :   1 (+  0,=  1,-  0), 50.0 %
Barbarossa 0.6.0              :   2 (+  2,=  0,-  0), 100.0 %
Cheng4 0.41                   :   2 (+  2,=  0,-  0), 100.0 %
Colossus 2021b                :   4 (+  4,=  0,-  0), 100.0 %
Stockfish 14.1                :   8 (+  0,=  2,-  6), 12.5 %
Stockfish 13                  :   5 (+  0,=  2,-  3), 20.0 %
Igel 3.0.10                   :   2 (+  1,=  1,-  0), 75.0 %
Zahak 9.0                     :   2 (+  0,=  2,-  0), 50.0 %
Fisherov 0.98i                :   6 (+  0,=  0,-  6),  0.0 %
Arasan 23.2                   :   6 (+  0,=  4,-  2), 33.3 %
Seer 2.4.0                    :   2 (+  0,=  2,-  0), 50.0 %
Fisherov 0.98j                :   6 (+  0,=  2,-  4), 16.7 %
Kayra 1.1                     :   2 (+  0,=  0,-  2),  0.0 %
Lc0 0.28.2                    :   2 (+  0,=  1,-  1), 25.0 %
Wasp 5.20 second compiles     :   2 (+  0,=  2,-  0), 50.0 %
Fritz 15                      :   2 (+  2,=  0,-  0), 100.0 %
Minic 3.18                    :   2 (+  0,=  2,-  0), 50.0 %
Bagatur 3.2                   :   2 (+  0,=  2,-  0), 50.0 %
Cheese 3.0.1                  :   4 (+  4,=  0,-  0), 100.0 %
Black Marlin 4.0              :   2 (+  1,=  1,-  0), 75.0 %
Combusken 2.0.0               :   4 (+  1,=  2,-  1), 50.0 %
Tucano 10.00                  :   2 (+  0,=  1,-  1), 25.0 %
Drofa 3.3.0                   :   2 (+  1,=  1,-  0), 75.0 %
Little Goliath 3.15           :   6 (+  4,=  1,-  1), 75.0 %
Velvet 3.1.3                  :   6 (+  4,=  2,-  0), 83.3 %
Protej 0.6.1                  :   2 (+  1,=  1,-  0), 75.0 %
Stockfish 250122              :   2 (+  0,=  0,-  2),  0.0 %
Anka 0.6.3                    :   2 (+  2,=  0,-  0), 100.0 %
Belofte 2.1.5                 :   2 (+  2,=  0,-  0), 100.0 %
CorChess 250122               :   2 (+  0,=  0,-  2),  0.0 %
Stockfish 250122 Ivec         :   4 (+  0,=  1,-  3), 12.5 %
Raubfisch X48c3               :   2 (+  0,=  1,-  1), 25.0 %
Rebel 14.1 NNUE               :   4 (+  2,=  1,-  1), 62.5 %
Protej 0.6.2                  :   1 (+  1,=  0,-  0), 100.0 %
Stockfish 290122              :   2 (+  0,=  0,-  2),  0.0 %
Little Goliath 3.15.3 NN      :   2 (+  0,=  2,-  0), 50.0 %
Berserk 9-dev NN              :   6 (+  0,=  1,-  5),  8.3 %
Koivisto 7.13                 :   4 (+  1,=  1,-  2), 37.5 %
Blunder 7.6.0                 :   2 (+  2,=  0,-  0), 100.0 %
Mayhem 6.6                    :   2 (+  0,=  2,-  0), 50.0 %
Mayhem 6.7                    :   2 (+  0,=  2,-  0), 50.0 %
Stockfish 170222              :   4 (+  0,=  0,-  4),  0.0 %
Keele 1.0                     :   4 (+  4,=  0,-  0), 100.0 %
Fire 8.2                      :   4 (+  1,=  0,-  3), 25.0 %
Leorik 1.0                    :   2 (+  2,=  0,-  0), 100.0 %
Eggnog 3.0                    :   2 (+  2,=  0,-  0), 100.0 %
Velvet 3.2.0                  :   3 (+  2,=  1,-  0), 83.3 %
Raubfisch X48d                :   3 (+  0,=  1,-  2), 16.7 %
Stockfish 050222              :   3 (+  0,=  1,-  2), 16.7 %



Comments

  1. STRAITEJuly 14, 2021 at 5:40 PM

    WHAT KIND OF HOUDINI WOULD DISSAPPEAR DURING A STAGE
    SHOW IN A BOX AND UNDERWATER????? SLICK???? 6K?

    OR WAS HOUDINI 6 WINDFALL PROFITS ENUFF TO GO TO YOUR
    OWN ISLAND FOR RETIREMENT???????? AND HOUDINI 7 IS OUT
    THERE SAILING THE 7 SEAS AND NEVER DOCKING AT ANY PORT????

    TIME SOMEONE TELLS THE REAL TRUTH??? A MERGER??? PERHAPS?

    ReplyDelete

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