New version chess engine: Clover 8.0
Great news, a new version of the Clover 8.0 engine has been released. In the CEDR ranking, the previous version was rated 3681 and took 11th place. We will start the first tests today - this promises to be a big improvement in the strength of the game!
v.8.0:
New version is here! This time with a new arch, using 7 king buckets. This scheme is eye-balled based on the distribution of the king square. As per usual, there is also many non-network changes, such as improving code quality. I really like how Clover looks like right now, but I know it can be improved.
I know there has been quite some talk about the so called SIMEX, a very valuable tool, which detected clones in the past (up to 5 years ago). I've had someone run some SIMEX tests on Clover and some other engines and well the results speak for themselves.
Clover 7.1-dev Motor 0.7.0 dev Obsidian 12.0 Viridithas 12.0.0
Clover 7.1-dev 100.00% 51.82% 60.04% 59.01%
Motor 0.7.0 dev 51.82% 100.00% 57.74% 48.52%
Obsidian 12.0 60.04% 57.74% 100.00% 57.96%
Viridithas 12.0.0 59.01% 48.52% 57.96% 100.00%
There definitely is going on some kind of... net sharing... like clearly, Clover uses self play data, Obsidian Leela... ugh wait this doesn't make sense... aha, it must be network architecture... ugh wait they are clearly different... then it must be training procedure! Ugh, but Obsidian uses multi step procedure... I have no idea, it mush be the shared ideas on Discord!! Although the test is done at DEPTH=1, this totally makes sense!!
Thanks to everyone who has aided me directly (Ciekce, first person to PR gainers to Clover :) ) or indirectly.
Have fun and report any bugs!
P.S.: Thanks Ipman for the avx512 compile!
Clover 7.1 JA - results:
Opponent | Score | +- | Games |
Peacekeeper 3.01 | 13.5/25 | +2 | 25 Games |
Alexandria 7.0.0 | 13/25 | +1 | 25 Games |
Ethereal 14.25 | 12.5/25 | +0 | 25 Games |
Viridithas 14.0.0 | 12.5/25 | +0 | 25 Games |
Chess-System-Tal-2 | 12/25 | -1 | 25 Games |
Motor 0.7.0 | 12/25 | -1 | 25 Games |
Caissa 1.20 JA | 12/25 | -1 | 25 Games |
Lizard 10.5 | 11.5/25 | -2 | 25 Games |
Obsidian 13.0 | 11/25 | -3 | 25 Games |
PlentyChess 3.0.0 | 10/25 | -5 | 25 Games |
Patricia 3.1 | 13/15 | +11 | 15 Games |
Koivisto 9.2 | 9.5/15 | +4 | 15 Games |
RubiChess 20240112 | 7.5/15 | +0 | 15 Games |
RubiChess 20240817 | 5/10 | +0 | 10 Games |
Velvet 8.0.0 | 5/10 | +0 | 10 Games |
Titan 1.1.0 | 4.5/10 | -1 | 10 Games |
Berserk 13 | 4/10 | -2 | 10 Games |
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