Amazing attack by Stockfish 16 against the Caro- Kann Defense
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:
[Event “Import”]
[Site “CCRL”]
[Date “2023.08.10”]
[Round “890.3.366”]
[White “Stockfish 16 64-bit”]
[Black “Caissa 1.11 64-bit”]
[Result “*”]
[WhiteElo “3514”]
[BlackElo “3410”]
[Variant “Standard”]
[TimeControl “-“]
[ECO “B12”]
[Opening “Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense”]
[Termination “Unterminated”]
[Annotator “lichess.org”]
1. e4 c6 2. d4 d5 3. e5 c5 { B12 Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense } 4. Nf3 cxd4 5. Nxd4 Nc6 6. Bb5 Bd7 7. Nxc6 bxc6 8. Bd3 e6 9. O-O Ne7 10. Nd2 a5 11. Qg4 c5 12. c3 Nf5 13. Nf3 h5 14. Qf4 g6 15. h4 Nh6 16. Rb1 Bg7 17. Re1 Qc7 18. Qg3 Ng4 19. Bf4 O-O 20. Bc2 a4 21. Ng5 Nh6 22. Rbd1 c4 23. a3 Ng4 24. Rd2 Nh6 25. Nf3 Rab8 26. Bxh6 Bxh6 27. Bxg6 fxg6 28. Qxg6+ Bg7 29. Ng5 Rf5 30. Re3 Bc8 31. Rf3 Rxf3 32. gxf3 Rb7 33. Kg2 Qxe5 34. Qe8+ Bf8 35. Qxc8 Rg7 36. Qd8 Re7 37. Rd4 Rg7 38. Rd1 Qe2 39. Rg1 Qe5 40. Qe8 Qf5 41. Re1 Re7 42. Qa8 Qg6 43. Qxa4 Bh6 44. Re5 Bg7 45. Re3 Bf6 46. f4 Kg7 47. Qd1 Kh6 48. Qe2 *
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