Integral - UCI Chess Engine
Author - Aron Petkovski Rating Chess Engines Diary CEDR=3680
v6:
This update should let Integral breach into the top 15, maybe even top 10 if it scales well enough. It's genuinely crazy seeing where this project is now.
Notable things in this update are:
Support for Multi-PV
Many search improvements and an SPSA tune
Bug fixes for wrong scores returned when using Syzygy tablebases
And of course, special thanks to everyone in my OpenBench instance and the kind, helpful people in the Stockfish discord.
Progression Tests
STC
Elo | 48.98 +- 6.48 (95%)
Conf | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 3006 W: 946 L: 525 D: 1535
Penta | [5, 197, 700, 574, 27]
https://chess.aronpetkovski.com/test/6574/
TC
Elo | 52.95 +- 6.17 (95%)
Conf | 40.0+0.40s Threads=1 Hash=32MB
Games | N: 3002 W: 963 L: 509 D: 1530
Penta | [1, 185, 679, 631, 5]
https://chess.aronpetkovski.com/test/6601/
Integral v5 vs other engines:
| Devre 6.39 JA | 27/53 | +1 | 53 Games |
| Alexandria 7.1.0 | 25/53 | -3 | 53 Games |
| Caissa 1.21 | 23/53 | -7 | 53 Games |
| Berserk 13 | 23.5/51 | -4 | 51 Games |
| Viridithas 15.0.0 | 23.5/49 | -2 | 49 Games |
| Motor 0.8.0 JA | 22/49 | -5 | 49 Games |
| RubiChess 20240817 | 21.5/49 | -6 | 49 Games |
| Spaghet BologNNese 1.0 | 24.5/47 | +2 | 47 Games |
| Lizard 11.1.0 | 20/43 | -3 | 43 Games |
| Velvet 8.1.1 JA | 24/39 | +9 | 39 Games |
| Obsidian dev-14.05 SE | 14/33 | -5 | 33 Games |
| Stormphrax 6.0.0 | 15/26 | +4 | 26 Games |
| Arasan 24.2.2 JA | 16/25 | +7 | 25 Games |
| PlentyChess 3.0.1 | 11.5/25 | -2 | 25 Games |
| Starzix 6.0 | 15/24 | +6 | 24 Games |
| PlentyChess 3.0.0 | 12.5/24 | +1 | 24 Games |
| Rebel-EAS 2.0 | 13/21 | +5 | 21 Games |
| Clover 8.0.1 | 10.5/20 | +1 | 20 Games |
| Obsidian dev-14.01 SE | 9.5/20 | -1 | 20 Games |
| Uralochka 3.41a JA | 7.5/14 | +1 | 14 Games |
| Ethereal 14.25 | 7/14 | +0 | 14 Games |
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