HERE IS THE LINK WHERE YOU CAN DOWNLOAD THE NEW STOCKFISH 15:
https://stockfishchess.org
DOWNLOAD SOME COOL STOCKFISH 15 GAMES IN PGN FORMAT HERE:
http://ccrl.chessdom.com/ccrl/4040/games.html#by_engine
A new major release of Stockfish is now available at https://stockfishchess.org
Stockfish 15 continues to push the boundaries of chess, providing unrivalled analysis and playing strength. In our testing, Stockfish 15 is ahead of Stockfish 14 by 36 Elo points and wins nine times more game pairs than it loses.
Improvements to the engine have made it possible for Stockfish to end up victorious in tournaments at all sorts of time controls ranging from bullet to classical and even at Fischer random chess. At CCC, Stockfish won all of the latest tournaments: CCC 16 Bullet, Blitz and Rapid, CCC 960 championship, and the CCC 17 Rapid. At TCEC, Stockfish won the Season 21, Cup 9, FRC 4 and in the current Season 22 superfinal, at the time of writing, has won 16 game pairs and not yet lost a single one.
This progress is the result of a dedicated team of developers that comes up with new ideas and improvements. For Stockfish 15, we tested nearly 13000 different changes and retained the best 200. These include the fourth generation of our NNUE network architecture, as well as various search improvements. To perform these tests, contributors provide CPU time for testing, and in the last year, they have collectively played roughly a billion chess games. In the last few years, our distributed testing framework, Fishtest, has been operated superbly and has been developed and improved extensively. This work by Pasquale Pigazzini, Tom Vijlbrief, Michel Van den Bergh, and various other developers is an essential part of the success of the Stockfish project.
Indeed, the Stockfish project builds on a thriving community of enthusiasts to offer a free and open-source chess engine that is robust, widely available, and very strong. We invite our chess fans to join the Fishtest testing framework and programmers to contribute to the project.
PGN OF THE GAME:
[Event “TCEC Cup 10 Quarterfinal”]
[Site “https://tcec-chess.com“]
[Date “2022.05.22”]
[Round “1.4”]
[White “Stockfish dev16_2022051413”]
[Black “Stoofvlees II b1”]
[Result “1-0”]
[WhiteElo “3627”]
[BlackElo “3507”]
[Variant “Standard”]
[TimeControl “1800+3”]
[ECO “C30”]
[Opening “King’s Gambit Declined: Keene Defense”]
[Termination “Unknown”]
[Annotator “lichess.org”]
1. e4 e5 2. f4 Qh4+ 3. g3 Qe7 { C30 King’s Gambit Declined: Keene Defense } 4. Nc3 exf4 5. d4 fxg3 6. hxg3 Nc6 7. Bg2 d6 8. Nh3 h5 9. Qd3 Qd8 10. Be3 g6 11. O-O Bh6 12. Nd5 Nce7 13. Rae1 c6 14. Nf6+ Nxf6 15. Bxh6 Bxh3 16. Bg7 Rh7 17. Bxf6 Qd7 18. d5 h4 19. Bxh4 Kf8 20. Bxh3 Qxh3 21. Re2 g5 22. Bxg5 cxd5 23. Bh4 Rg7 24. Kf2 Nc6 25. exd5 Ne5 26. Qa3 Nc4 27. Be7+ Kg8 28. Qf3 Qh2+ 29. Ke1 Qxg3+ 30. Qxg3 Rxg3 31. Bf6 Rh3 32. Rg1+ Kh7 33. Bd4 b5 34. Re7 Ne5 35. Bxe5 Re3+ 36. Kd2 Rxe5 37. Rxf7+ Kh8 38. Kc1 Rh5 39. Rd7 Rxd5 40. Rh1+ Kg8 41. Rdh7 Rf8 42. Rxa7 Rf2 43. a3 Rc5 44. c3 Rd5 45. Rb7 Re2 46. Rg1+ Kf8 47. Rf1+ Kg8 48. Kb1 Rh2 49. Ka1 Re2 50. Rf4 Rc5 51. Rff7 Rd5 52. Rfd7 Kf8 53. Ka2 Re8 54. Kb3 Ra8 55. Rb6 Rh5 56. Rbxd6 Ke8 57. Rd5 Rh4 58. Rb7 Ra6 59. Rdxb5 Kd8 60. a4 Kc8 61. R7b6 Ra7 62. a5 Rh1 63. a6 Ra8 64. Rg6 Rh8 65. Rb7 Rf8 66. Rc6+ Kd8 67. a7 Rh8 68. Rg7 Re8 69. Rb6 Kc8 70. Rbb7 Rh8 71. Rgd7 Rxa7 72. Rdc7+ Kd8 73. Rxa7 Rh6 74. Rg7 Rb6+ 75. Kc2 Kc8 76. Rg8# { White wins. } 1-0
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