Chess engine: Akimbo 1.0.0

Akimbo is a UCI compatible Chess (and Chess960) engine written in Rust.

Rating CEDR=3504

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 0.8.0 - results:

Seer 2.8.0	6.5/18	-5	18 Partii
Obsidian 9.0	4/14	-6	14 Partii
Stormphrax 4.0.0	5.5/10	+1	10 Partii
RubiChess 20230918	3.5/10	-3	10 Partii
Clover 6.1	3/10	-4	10 Partii
Chess-System-Tal-2	2.5/10	-5	10 Partii
Caissa 1.15	2.5/10	-5	10 Partii
Uralochka 3.40a	2/10	-6	10 Partii
Ethereal 14.25	2/10	-6	10 Partii
Ceibo 1.0	8/8	+8	8 Partii
Shuffle 4.4.0	8/8	+8	8 Partii
Caissa 1.16	2/8	-4	8 Partii
Maxwell 3.0.7	6/6	+6	6 Partii
Fatalii 0.6.0	6/6	+6	6 Partii
Eubos 3.00	6/6	+6	6 Partii
ChessBrainVB 4.02	6/6	+6	6 Partii
Critter 1.6a	5.5/6	+5	6 Partii
Thrawn 2.0	5.5/6	+5	6 Partii
Pedantic 0.6.2	5/6	+4	6 Partii
Pawn 2.0	4.5/6	+3	6 Partii
Clarity 4.0.0	4/6	+2	6 Partii

Akimbo 1.0.0 download