Rating Chess Engines Diary CEDR=2833
Colossus 2025b - what's new?
The latest version is Colossus 2025b. It 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 25 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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