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 14.25 | 67/149 | -15 | 149 Games |
| Chess-System-Tal-2 | 74.5/148 | +1 | 148 Games |
| Seer 2.8.0 | 54/109 | -1 | 109 Games |
| Obsidian 12.0 | 43.5/92 | -5 | 92 Games |
| Berserk 13 | 41.5/92 | -9 | 92 Games |
| Caissa 1.18 | 40.5/81 | +0 | 81 Games |
| Alexandria 6.1.0 | 40/75 | +5 | 75 Games |
| Rebel 16.3 | 38.5/71 | +6 | 71 Games |
| Clover 6.1.19 | 38.5/66 | +11 | 66 Games |
| PlentyChess 1.0.0 | 31/64 | -2 | 64 Games |
| Clover 6.1 | 29.5/58 | +1 | 58 Games |
| Uralochka 3.41 dev1 | 28.5/58 | -1 | 58 Games |
| RofChade 3.1 | 31/56 | +6 | 56 Games |
| Titan 1.0.0 | 27/54 | +0 | 54 Games |
| Berserk 12.1 | 20/54 | -14 | 54 Games |
| Caissa 1.16 | 21.5/48 | -5 | 48 Games |
| Uralochka 3.41 dev3 | 25/44 | +6 | 44 Games |
| Obsidian 10.0 | 18/44 | -8 | 44 Games |
| Stormphrax 4.0.0 | 27/42 | +12 | 42 Games |
| Caissa 1.17 | 19.5/42 | -3 | 42 Games |
| Koivisto 9.2 | 21/40 | +2 | 40 Games |
| Viridithas 12.0.0 | 22.5/38 | +7 | 38 Games |
| Clover 6.1.2.4 JA | 20/36 | +4 | 36 Games |
| Minic 3.41 | 21/34 | +8 | 34 Games |
| Obsidian 11.0 | 17/34 | +0 | 34 Games |
| Dragon 3.3 | 16.5/33 | +0 | 33 Games |
| Velvet 7.0.0 | 22/30 | +14 | 30 Games |
| Black Marlin 9.0 | 20.5/30 | +11 | 30 Games |
| Texel 1.11 | 19.5/28 | +11 | 28 Games |
| Velvet 7.3.0 | 16.5/28 | +5 | 28 Games |
| Alexandria 6.0 | 16/28 | +4 | 28 Games |
| Vafra 14.12.1 Stockfish | 13.5/26 | +1 | 26 Games |
| Revenge 3.0 | 11.5/26 | -3 | 26 Games |
| Avalanche 2.1.0 | 20/24 | +16 | 24 Games |
| Arasan 24.1 | 15.5/24 | +7 | 24 Games |
| Alexander 1.3 | 14.5/24 | +5 | 24 Games |
| Booot 7.3 | 14/24 | +4 | 24 Games |
| Lizard 10.3 | 12.5/22 | +3 | 22 Games |
| Altair 7.0.3 | 13/19 | +7 | 19 Games |
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