Crazy middle game ideas by Stockfish 16.
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 “CCRL 40/15”]
[Site “CCRL”]
[Date “2023.07.16”]
[Round “887.4.564”]
[White “Stockfish 16 64-bit”]
[Black “Halogen 11 64-bit”]
[Result “*”]
[WhiteElo “3514”]
[BlackElo “3309”]
[Variant “Standard”]
[TimeControl “-“]
[ECO “D45”]
[Opening “Semi-Slav Defense: Stoltz Variation”]
[Termination “Unterminated”]
[Annotator “lichess.org”]
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nc3 Nbd7 6. Qc2 { D45 Semi-Slav Defense: Stoltz Variation } Bd6 7. Be2 O-O 8. O-O b6 9. e4 Nxe4 10. Nxe4 dxe4 11. Qxe4 Bb7 12. Rd1 Nf6 13. Qh4 Qe7 14. b4 Bxb4 15. Bd3 h5 16. c5 bxc5 17. Bg5 c4 18. Be2 Ba5 19. g4 Qd6 20. gxh5 Nh7 21. Bf4 Qd8 22. Qg3 Qf6 23. Rab1 Bb6 24. a4 Ba6 25. a5 Bd8 26. Kh1 Qe7 27. Bd6 Qe8 28. Rg1 Bf6 29. Nd2 Kh8 30. Bxf8 Qxf8 31. Bxc4 Bxc4 32. Nxc4 Qd8 33. Ne5 Kg8 34. Rb7 Qxd4 35. Nxf7 Qd5+ 36. Qg2 Qxh5 37. f4 Qd5 38. Ne5 Nf8 39. Nxc6 Kh8 *
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