New chess engine: Integral v4
The first public release of Integral
Author - Aron Petkovski
v4:
This is the final "HCE" version of Integral. Notable things in this update are:
Multiple search improvements.
Self-play data generation system.
New evaluation dataset of 40 million positions (combined from lichess-big3-resolved, Ethereal, and self-generated data).
Pawn-relative piece square tables.
Progression Test
+158 elo at STC over Integral v3 on UHO_Lichess_4852_v1.epd
Elo | 158.51 +- 16.36 (95%)
Conf | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 1000 W: 568 L: 141 D: 291
Penta | [2, 24, 143, 207, 124]
https://chess.aronpetkovski.com/test/3783/
Integral v3 results:
| Opponent | Score | +- | Games |
| Yuli GM Pro 16 | 1/4 | -2 | 4 Games |
| HypnoS 20240727 | 0.5/4 | -3 | 4 Games |
| Dragon 3.3 | 0.5/4 | -3 | 4 Games |
| Caissa 1.20 | 0.5/4 | -3 | 4 Games |
| CorChess 20240724 | 0.5/4 | -3 | 4 Games |
| Stockfish 16.1 | 0.5/4 | -3 | 4 Games |
| SF-PRO 29.07.2024 | 0/4 | -4 | 4 Games |
| Fire 9.3 | 0/4 | -4 | 4 Games |
| Stockfish 20240728 | 0/4 | -4 | 4 Games |
| Stockfish 20240723 | 0/4 | -4 | 4 Games |
| SugaR AI SE | 0/4 | -4 | 4 Games |
| Alexandria 7.0.0 | 1/3 | -1 | 3 Games |
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