akimbo

A UCI Chess and Chess960 engine written in Rust.

Huge thanks to all of the members of this OpenBench Instance who have provided support and guidance in the development of akimbo, as well as facilitating far faster testing than on my own (as well as OpenBench itself).

Evaluation

Up to and including version 1.0.0, all data used was self-generated, starting from material values when akimbo still had an HCE and iteratively generating data and tuning to produce higher quality datasets. The final HCE dataset was then used to train akimbo's first network and further data was then generated.

This involved hundreds of hours of compute, and got incredibly tedious, so akimbo now uses data produced by Leela Chess Zero, however no official release will be made with this.

Additionally, akimbo uses its own trainer written in Rust and CUDA, bullet, which also used by a number of other engines.

Stats

Version	Release Date	CCRL 40/15	CCRL Blitz	Notes
0.1.1	8th January 2023	2442	-	First Release
0.2.0	10th April 2023	2504	-	-
0.3.0	16th May 2023	2570	-	-
0.4.0	4th July 2023	2729	2723	-
0.4.1	4th August 2023	-	2841	Final PST-only Release
0.5.0	13th August 2023	3026	3062	Better HCE
0.6.0	24th September 2023	3335	-	NNUE
0.7.0	30th October 2023	3389	3485	DFRC + SMP Support
0.8.0	2nd January 2024	3438	3548	-
1.0.0	26th March 2024	2474	3583	Final Original Data Release

Compiling

Run the following command

make EVALFILE=resources/net.bin

and the executable will be located in target/release.