Chess engine: Caissa 1.21

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Another version of a very powerful chess engine has appeared, which wants to beat Stockfish. We are very happy about this - we will do the first tests of this version of the engine for you soon.

Caissa - UCI chess engine,  Author: Michał Witanowski
Rating Chess Engines Diary CEDR=3699

v.1.21:
Progression test
TC=60+0.6s, Book=UHO_Lichess_4852_v1.epd

Elo   | 35.09 +- 4.16 (95%)
Conf  | 60.0+0.60s Threads=1 Hash=128MB
Games | N: 6278 W: 1758 L: 1126 D: 3394
Penta | [2, 446, 1624, 1052, 15]
TC=8+0.08s, Book=UHO_Lichess_4852_v1.epd

Elo   | 22.65 +- 3.68 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=8MB
Games | N: 10000 W: 2812 L: 2161 D: 5027
Penta | [31, 974, 2402, 1499, 94]
TC=10+0.1s, Book=DFRC.epd

Elo   | 18.98 +- 5.35 (95%)
Conf  | 10.0+0.10s Threads=1 Hash=16MB
Games | N: 5002 W: 1114 L: 841 D: 3047
Penta | [38, 462, 1258, 675, 68]
Changes
Fixed problems detected by sanitizers that could lead to potential crashes.
New neural network trained on a total of 13 billion positions.
Improved eval correction (Stockfish style).
Tuned parameters at long time control.
Various search improvements.

Caissa 1.20 - results:
OpponentScore+-Games
Obsidian 13.027.5/52+352 Games
Berserk 1320.5/40+140 Games
Chess-System-Tal-225/36+1436 Games
Ethereal 14.2519.5/36+336 Games
PlentyChess 3.0.018.5/36+136 Games
Alexandria 7.0.020.5/33+833 Games
Stockfish 16.116.5/33+033 Games
Uralochka 3.41a JA21/32+1032 Games
Motor 0.7.016.5/30+330 Games
Titan 1.1.016/28+428 Games
Yuliana 5.011.5/26-326 Games
Peacekeeper 3.0117/25+925 Games
Lizard 10.515/24+624 Games
Viridithas 14.0.013.5/22+522 Games
RubiChess 2024081711/20+220 Games
HypnoS 202407279/18+018 Games
Clover 7.1 JA9.5/17+217 Games
Steel Fighter III8/17-117 Games
Patricia 3.113.5/15+1215 Games
Vafra 14.12.2 Stockfish8.5/15+215 Games




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