New chess engine: Sirius 7.0
Sirius - UCI chess engine
Rating Chess Engines Diary CEDR=3113
v.7.0:
##Release notes
This version of Sirius is, unfortunately, no longer using just piece square tables for the evaluation function. It is, however, significantly stronger than Sirius 6.0 in self-play. Major new features include a more sophisticated handcrafted evaluation function tuned with my tuner, and a few major search features
Changelog
A few minor refactors
Many new evaluation features
Mobility
Threats
Pawn structure
Passed pawns, isolated pawns, etc.
King safety
Pawn shield/storm
Safe checks from enemy pieces
Attacks to squares near kings
Rooks on open/semi-open files
Knight outposts
Bishop pair
Tempo bonus
A few search changes
Static evaluation correction history
Capture history
Quiescence search futility pruning
Threat history
Some other tweaks
Complete LTC SPSA tune of the entire search
Self-play against Sirius v6.0
Elo | 269.79 +- 7.38 (95%)
Conf | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 10000 W: 7189 L: 682 D: 2129
Penta | [29, 163, 708, 1472, 2628]
Elo | 306.84 +- 10.27 (95%)
Conf | 40.0+0.40s Threads=1 Hash=64MB
Games | N: 5000 W: 3715 L: 175 D: 1110
Penta | [0, 41, 251, 835, 1373]
Estimated 3200 rating
Sirius 6.0 - results:
Peripheral 1.1.3 | 12/12 | +12 | 12 Games |
Expositor 4WR02 | 1.5/8 | -5 | 8 Games |
Puffin 3.0 | 5/5 | +5 | 5 Games |
Cadie 1.7 | 2.5/4 | +1 | 4 Games |
Obsidian 11.0 | 0/4 | -4 | 4 Games |
Velvet 7.1.0 | 0/4 | -4 | 4 Games |
Inanis 1.2.1 | 3/3 | +3 | 3 Games |
Molybdenum 3.0 | 2/3 | +1 | 3 Games |
Princhess 0.16.0 | 1.5/3 | +0 | 3 Games |
Black Marlin 9.0 | 0/3 | -3 | 3 Games |
ShashChess 34.6 | 0/3 | -3 | 3 Games |
Stockfish 16.1 | 0/3 | -3 | 3 Games |
Devel 4.0.2.3 | 2/2 | +2 | 2 Games |
Lux 4.2 | 2/2 | +2 | 2 Games |
K2 0.99 | 2/2 | +2 | 2 Games |
BabChess 1.0.0 | 2/2 | +2 | 2 Games |
Knightx 3.9 | 2/2 | +2 | 2 Games |
Sloth 1.7 | 2/2 | +2 | 2 Games |
Supernova 2.4 | 2/2 | +2 | 2 Games |
Kobol 1.0 | 2/2 | +2 | 2 Games |
OliThink 5.10.5 | 2/2 | +2 | 2 Games |
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