New version chess engine: Colossus 2025a
Rating Chess Engines Diary CEDR=2826
v. 2025a
t is a 64-bit Windows executable which should run on any modern PC as it does not use any extended instruction sets like AVX. I have no plans for a Macintosh, Unix or Android version.
My tests indicate an improvement of about 15 - 20 ELO.
Apologies in advance for any outstanding bugs! If you have any problems, questions, comments, suggestions, games etc please email me here. Also apologies if I am slow (or non-existent) in responding, it just seems impossible to keep up sometimes!
Next steps may include NNUE and a whole bunch of other things... but I have no idea how long that will take!
Colossus 2022a vs other engines:
| Caligula 1.0b | 5/16 | -6 | 16 Games |
| Rebel 15x2 | 0/16 | -16 | 16 Games |
| Smallbrain 1.2 | 10.5/12 | +9 | 12 Games |
| Vafra 3.3.2 | 3/12 | -6 | 12 Games |
| K2 0.99 | 6.5/11 | +2 | 11 Games |
| Hiarcs 15.5 | 0/11 | -11 | 11 Games |
| Journeyman 1.7 | 6.5/10 | +3 | 10 Games |
| Delocto 0.61n | 4.5/10 | -1 | 10 Games |
| Counter 4.1 | 1/10 | -8 | 10 Games |
| Stash 33.0 | 0.5/10 | -9 | 10 Games |
| Berserk 9-dev | 0/10 | -10 | 10 Games |
| Amoeba 3.4 | 0/10 | -10 | 10 Games |
| Zevra 2.5 | 7.5/9 | +6 | 9 Games |
| Fornax 4.0 | 7.5/9 | +6 | 9 Games |
| Novice 3.1 | 7.5/9 | +6 | 9 Games |
| Devel 4.0.2.3 | 6/9 | +3 | 9 Games |
| Blunder 8.5.5 | 6/9 | +3 | 9 Games |
| Bagatur 3.3 | 0.5/9 | -8 | 9 Games |
| Galjoen 0.41.2 | 6/8 | +4 | 8 Games |
| Apotheosis 4.0.1 | 4/8 | +0 | 8 Games |
| Mayhem 7.3 | 2.5/8 | -3 | 8 Games |
Colossus homepage: http://www.colossusgames.somee.com/chess/colossuschessuci.htm
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