Titan - UCI chess engine
Rating Chess Engines Diary CEDR=3645
This project is a chess engine that was developed as a learning experience and passion project. It is capable of using the UCI interface to communicate with most chess GUIs, and well past capable of beating me for better or for worse...
The Makefile supports two options. The first entry is capable of being built on stable, and utilizes compiler autovectorization for neural network updates and evaluation. The second option requires both an AVX512 capable cpu and the nightly compiler, as SIMD intrinsics in rust have not stabilized. I expect this will segfault on a non-AVX512 capable cpu.
I've made somewhat sporadic and inconsistent progress on this project over the past year or so, and while it doesn't implement anything terribly original, (what it did was superseded -- RIP screlu181), I've learned a lot. It likely has quite a few bugs, and there's several areas of entirely illogical behavior that I know of, though others almost certainly exist. I lack the time and hardware to want to continue developing at the moment.
Titan has a fairly average set of features for the modern era of chess engines. It uses a single-layer, king bucketed, horizontally mirrored NNUE trained on Leela data for evaluation.
I would conservatively estimate Titan's strength to be around 3450 Elo on a single core, but as mentioned before, I don't currently have the time or hardware to test that with any level of statistical certainty.
Titan has a fairly average set of features for the modern era of chess engines. It uses a single-layer, king bucketed, horizontally mirrored NNUE trained on Leela data for evaluation.
I would conservatively estimate Titan's strength to be around 3450 Elo on a single core, but as mentioned before, I don't currently have the time or hardware to test that with any level of statistical certainty.
v.1.1.0:
This release includes fixes to a few very crucial bugs
No longer crashes if given negative time as part of a UCI command (other UCI values will likely still crash, but they shouldn't ever occur like time can). Thanks to Cosmo for bringing this to my attention
ucinewgame no longer resets the thread UCI option
SMP actually works now
Titan 1.1.0 vs other engines:
| Berserk 13 | 53.5/137 | -30 | 137 Games |
| Ethereal 14.25 | 60.5/124 | -3 | 124 Games |
| Alexandria 7.0.0 | 57/123 | -9 | 123 Games |
| Chess-System-Tal-2 | 54/108 | +0 | 108 Games |
| Uralochka 3.41a JA | 48/94 | +2 | 94 Games |
| PlentyChess 3.0.0 | 38/91 | -15 | 91 Games |
| Obsidian 13.0 | 35.5/86 | -15 | 86 Games |
| Clover 6.2 | 36.5/72 | +1 | 72 Games |
| Caissa 1.20 | 31/71 | -9 | 71 Games |
| RubiChess 20240112 | 28.5/62 | -5 | 62 Games |
| RubiChess 20240817 | 24.5/53 | -4 | 53 Games |
| Dragon 3.3 | 19.5/53 | -14 | 53 Games |
| Viridithas 15.0.0 | 21.5/48 | -5 | 48 Games |
| Caissa 1.21 | 19/44 | -6 | 44 Games |
| Velvet 8.0.0 | 23.5/43 | +4 | 43 Games |
| Motor 0.7.0 | 21/43 | -1 | 43 Games |
| Lizard 10.4 | 22/41 | +3 | 41 Games |
| Peacekeeper 3.01 | 22/40 | +4 | 40 Games |
| Motor 0.8.0 JA | 18.5/40 | -3 | 40 Games |
| Alexandria 7.1.0 | 17.5/40 | -5 | 40 Games |
| Obsidian 12.29 | 16/40 | -8 | 40 Games |
| PlentyChess 2.0.0 | 16.5/38 | -5 | 38 Games |
| Caissa 1.19 | 18/36 | +0 | 36 Games |
| Seer 2.8.0 | 18/36 | +0 | 36 Games |
| Integral v6 | 17/36 | -2 | 36 Games |
| Uralochka 3.42 dev7 | 16.5/36 | -3 | 36 Games |
| Berserk 20241119 | 15.5/36 | -5 | 36 Games |
| PlentyChess 3.0.1 | 13/32 | -6 | 32 Games |
| Stockfish 17 | 13/31 | -5 | 31 Games |
| Peacekeeper 3.00 | 17.5/30 | +5 | 30 Games |
| Velvet 8.1.1 JA | 14/30 | -2 | 30 Games |
| Caissa 1.18 | 13.5/30 | -3 | 30 Games |
| Obsidian 14.23 SE | 12.5/30 | -5 | 30 Games |
| Lizard 11.1 | 15.5/29 | +2 | 29 Games |
| Stormphrax 1.0.0 | 15/28 | +2 | 28 Games |
| Viridithas 13.0.0 | 15/28 | +2 | 28 Games |
| Viridithas 14.0.0 | 12.5/26 | -1 | 26 Games |
| Clover 8.1 JA | 12/26 | -2 | 26 Games |
| Stormphrax 6.0.0 | 11/25 | -3 | 25 Games |
| Starzix 6.0 | 11.5/24 | -1 | 24 Games |
| Clover 7.0 JA | 11/24 | -2 | 24 Games |
| Yuliana 5.0 | 8/24 | -8 | 24 Games |
| Lizard 10.5 | 9/22 | -4 | 22 Games |
| Stockfish 16.1 | 7/22 | -8 | 22 Games |
| Clover 8.0.1 | 10/21 | -1 | 21 Games |
| Wasp 7.00 | 16/20 | +12 | 20 Games |
Windows/Linux & Android builds - Jim Ablett compiles:
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