Akimbo is a UCI compatible Chess (and Chess960) engine written in Rust.
v.1.0.0:
This (probably) marks the final release where akimbo's NNUE is wholly original, I have spent (wasted?) hundreds of hours of compute generating training data on 6 threads, and really cannot be bothered to do any more of it, so future releases will likely use external data. I have thus incremented the major version number to indicate this, as well as the fact that akimbo now contains all of the biggest functional features (SMP, DFRC, etc).
Main Features
NNUE Speedups
A few small search improvements
Replaced oldest data with new data
New network, trained on 1.5bn positions with arch (768x4hm -> 1024)x2 -> 1
Full Changelog: v0.8.0...v1.0.0
Self-Play against v0.8.0
Couldn't be bothered to run a full progtest, it should hopefully scale better due to the larger network.
Elo | 34.86 +- 16.92 (95%)
Conf | 40.0+0.40s Threads=1 Hash=128MB
Games | N: 350 W: 56 L: 21 D: 273
Penta | [0, 15, 113, 44, 3]
Akimbo 1.0.0 vs other engines:
| Berserk 13 | 12/40 | -16 | 40 Games |
| Velvet 7.3.0 | 11.5/30 | -7 | 30 Games |
| Chess-System-Tal-2 | 11/30 | -8 | 30 Games |
| Ethereal 14.25 | 9/30 | -12 | 30 Games |
| Seer 2.8.0 | 10.5/28 | -7 | 28 Games |
| Rebel 16.3 | 10/28 | -8 | 28 Games |
| RubiChess 20240112 | 7.5/26 | -11 | 26 Games |
| Obsidian 12.0 | 6.5/24 | -11 | 24 Games |
| Uralochka 3.41a JA | 9.5/22 | -3 | 22 Games |
| Alexandria 7.0.0 | 6/22 | -10 | 22 Games |
| Fire 9.3 | 8.5/20 | -3 | 20 Games |
| PlentyChess 1.0.0 | 7/19 | -5 | 19 Games |
| Caissa 1.18 | 6/19 | -7 | 19 Games |
| Clarity 6.0.0 | 11/18 | +4 | 18 Games |
| Koivisto 9.2 | 8.5/18 | -1 | 18 Games |
| Arasan 24.2.2 | 8/18 | -2 | 18 Games |
| Vafra 14.12.1 Stockfish | 5/18 | -8 | 18 Games |
| Alexandria 6.1.0 | 5.5/17 | -6 | 17 Games |
| Stormphrax 4.1.0 | 8/16 | +0 | 16 Games |
| Viridithas 12.0.0 | 8/16 | +0 | 16 Games |
| Peacekeeper 2.40 | 7.5/16 | -1 | 16 Games |
Jim Ablett compiles:
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