Chess engine: Rubichess 2.2 NNUE

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RubiChess -  UCI chess engine, Rating CEDR=3445 (6 place)
Author - Andreas Matthies

Just another UCI compliant chess engine. Have a look at the ChangeLog for a detailed feature list.
'UCI compliant' means that for best user experience you need a chess GUI like Arena, CuteChess or BanksiaGUI (just to name some free programs) and install RubiChess as an engine in this GUI.
RubiChess development started in 2016 as a private hobby project to practise programming in C++ and to see the engine improving compared to earlier releases. Meanwhile some years later RubiChess got pretty competitive and is listed in most of the rankings and plays a lot of even big tournaments.
I'm still not very good in C++ using a C-style code most of the time but the whole project was and is a lot of fun.

Rubichess 2.2 NNUE - download


RubiChess 20240112 (the newest version) - results:
Ethereal 14.2567/149-15149 Games
Chess-System-Tal-274.5/148+1148 Games
Seer 2.8.054/109-1109 Games
Obsidian 12.043.5/92-592 Games
Berserk 1341.5/92-992 Games
Caissa 1.1840.5/81+081 Games
Alexandria 6.1.040/75+575 Games
Rebel 16.338.5/71+671 Games
Clover 6.1.1938.5/66+1166 Games
PlentyChess 1.0.031/64-264 Games
Clover 6.129.5/58+158 Games
Uralochka 3.41 dev128.5/58-158 Games
RofChade 3.131/56+656 Games
Titan 1.0.027/54+054 Games
Berserk 12.120/54-1454 Games
Caissa 1.1621.5/48-548 Games
Uralochka 3.41 dev325/44+644 Games
Obsidian 10.018/44-844 Games
Stormphrax 4.0.027/42+1242 Games
Caissa 1.1719.5/42-342 Games
Koivisto 9.221/40+240 Games
Viridithas 12.0.022.5/38+738 Games
Clover 6.1.2.4 JA20/36+436 Games
Minic 3.4121/34+834 Games
Obsidian 11.017/34+034 Games
Dragon 3.316.5/33+033 Games
Velvet 7.0.022/30+1430 Games
Black Marlin 9.020.5/30+1130 Games
Texel 1.1119.5/28+1128 Games
Velvet 7.3.016.5/28+528 Games
Alexandria 6.016/28+428 Games
Vafra 14.12.1 Stockfish13.5/26+126 Games
Revenge 3.011.5/26-326 Games
Avalanche 2.1.020/24+1624 Games
Arasan 24.115.5/24+724 Games
Alexander 1.314.5/24+524 Games
Booot 7.314/24+424 Games
Lizard 10.312.5/22+322 Games
Altair 7.0.313/19+719 Games




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