Amazing attack by Stockfish in Chess 960.
Stockfish continues to demonstrate its ability to discover superior moves with remarkable speed. In self-play against Stockfish 15, this new release gains up to 50 Elo and wins up to 12 times more game pairs than it loses. In major chess engine tournaments, Stockfish reliably tops the rankings winning the TCEC season 24 Superfinal, Swiss, Fischer Random, and Double Random Chess tournaments and the CCC 19 Bullet, 20 Blitz, and 20 Rapid competitions. Leela Chess Zero was the challenger in most finals, putting top-engine chess now firmly in the hands of teams embracing free and open-source software.This updated version of Stockfish introduces several enhancements, including an upgraded neural net architecture (SFNNv6), improved implementation, and refined parameterization. The ongoing utilization of Leela’s data combined with a novel inference approach exploiting sparsity, and network compression ensure a speedy evaluation and modest binary sizes while allowing for more weights and higher accuracy. The search has undergone more optimization, leading to improved performance, particularly in longer analyses. Additionally, the Fishtest framework has been improved and is now able to run the tests needed to validate new ideas with 10000s of CPU cores.Stockfish now comes with documentation, found in the wiki folder when downloading it or on GitHub. Additionally, Stockfish now includes a clear and consistent forced tablebase win score, displaying a value of 200 minus the number of plies required to reach a tablebase win. Furthermore, the UCI_Elo option, to reduce its strength, has been calibrated. It is worth noting that the evaluation system remains consistent with Stockfish 15.1, maintaining the choice that 100cp means a 50% chance of winning the game against an equal opponent. Finally, binaries of our latest development version are now provided continuously as pre-releases on GitHub making it easier for enthusiasts to download the latest and strongest version of the program, we thank Roman Korba for having provided a similar service for a long time.
PGN OF THE GAME:
[Event “CCRL 40/2 FRC”]
[Site “CCRL”]
[Date “2023.06.20”]
[Round “370.1.704”]
[White “Stockfish”]
[Black “Viridithas 10.0.0”]
[Result “*”]
[WhiteElo “3991”]
[BlackElo “3674”]
[Variant “From Position”]
[TimeControl “-“]
[ECO “?”]
[Opening “?”]
[Termination “Unterminated”]
[FEN “nrqbbkrn/pppppppp/8/8/8/8/PPPPPPPP/NRQBBKRN w KQkq – 0 1”]
[SetUp “1”]
[Annotator “lichess.org”]
1. e4 Ng6 2. O-O e5 3. Ng3 d6 4. b4 O-O 5. c4 Bd7 6. d4 exd4 7. f4 c5 8. f5 Ne5 9. f6 b5 10. Qg5 Ng6 11. Nh5 bxc4 12. Nxg7 Qc6 13. Qh6 Nc7 14. Rc1 Kh8 15. Bg3 Rxb4 16. Bh5 Ne5 17. Bxe5 Rg8 18. Bg6 fxg6 19. Nh5 Ne6 20. f7+ dxe5 21. fxg8=Q+ Kxg8 22. Rf8+ Nxf8 *
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