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HERE IS THE LINK WHERE YOU CAN DOWNLOAD THE NEW STOCKFISH 15:
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:
[Event “TCEC Season 23 – Division P”]
[Site “https://tcec-chess.com“]
[Date “2022.10.07”]
[Round “23.3”]
[White “Stockfish dev16_202209170930”]
[Black “Stoofvlees II b1”]
[Result “1-0”]
[WhiteElo “3611”]
[BlackElo “3511”]
[Variant “Standard”]
[TimeControl “3600+6”]
[ECO “B90”]
[Opening “Sicilian Defense: Najdorf Variation, English Attack”]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 { B90 Sicilian Defense: Najdorf Variation, English Attack } e6 7. Be2 Be7 8. Qd2 Qc7?! { (0.42 → 1.20) Inaccuracy. O-O was best. } (8… O-O 9. g4) 9. g4 b5 10. g5 Nfd7 11. a3 Bb7 12. h4 Nc6 13. h5 Rc8 14. Nxc6 Bxc6 15. O-O-O O-O 16. g6 Nc5 17. h6?! { (1.40 → 0.66) Inaccuracy. f3 was best. } (17. f3) 17… fxg6 18. hxg7 Rf7 19. Bd4 e5 20. Rxh7 Rxg7 21. Rxg7+ Kxg7 22. Rh1 g5 23. Be3 Rh8 24. Rg1 Nxe4 25. Nxe4 Bxe4 26. Bxg5 Rh1 27. Bh6+ Kh7 28. Rxh1 Bxh1 29. Bd3+ e4 30. Be2 Kg6 31. Be3 Qc6 32. Bg4 Qc4 33. Qd1 Bf3 34. Bxf3 exf3 35. Qxf3 Bf6 36. Kb1 d5 37. Bc1 Qe4 38. Qg3+ Kf7 39. Qc7+ Qe7 40. Qh2 Qe5 41. Qh3 d4 42. Qh7+ Bg7 43. Qh1 Qe6 44. f4 Kg6 45. Qg2+ Kf7 46. Qb7+ Kg6 47. Qg2+ Kf7 48. Qf3 Kg6 49. Bd2 Bf6 50. Bb4 Bg7 51. Qg3+ Kf7 52. Qf3 Kg6 53. Qg3+ Kf7 54. Qg2 Bf6 55. Qf3 Kg6 56. Bd2 Bg7 57. Qd3+ Kf7 58. Qf3 Kg6 59. Qd3+ Kf7 60. f5 Qe5 61. Qf3 Kf6 62. Qg4 Qxf5 63. Qxd4+ Kg6 64. Qg1+ Kh7 65. Qh1+ Kg6 66. Qc6+ Kh5 67. Qh1+ Kg6 68. Qc6+ Kh5 69. Bc3 Qf1+ 70. Ka2 Qf7+ 71. b3 Bxc3 72. Qxc3 Qb7 73. Qf6 Kg4 74. Kb2 Kg3 75. a4 bxa4 76. Qc3+ Kg2 77. b4 Kf2?! { (3.89 → 5.01) Inaccuracy. Qe7 was best. } (77… Qe7 78. Ka3) 78. Ka3 Qb5 79. Qc7 Ke2 80. Qc5 Kf1 81. c4 Qd7 82. Qd5 Qg7 83. Qd3+ Kf2 84. Kxa4 Qa1+ 85. Kb3 Qf6?! { (6.89 → 12.26) Inaccuracy. a5 was best. } (85… a5 86. bxa5 Qe1 87. c5 Qe6+ 88. Qc4 Qc6 89. a6 Kg2 90. Kb4 Kh1 91. Qc1+ Kg2 92. Qd2+) 86. Qd2+ Kf1 87. Qc1+ Ke2 88. Qb2+ Qxb2+ { White wins. } 1-0
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