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
1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 Nf6 5. Bg2 d6 6. O-O Be7 7. c3 O-O 8. Qe2 b6 9. Na3 Ba6 10. Rb1 d5 11. e5 Nd7 12. Rd1 b5 13. d4 cxd4 14. cxd4 Qa5 15. Bf1 Rfc8 16. Nc2 Ncb8 17. b4 Qxa2 18. Rb2 Qc4 19. Rd3 Nb6 20. Ng5 Na4 21. Qh5 Bxg5 22. Rf3 Qc7 23. Bd3 g6 24. Qxg5 Qd8 25. Qh6 Qf8 26. Qh4 Nd7 27. Ra2 Rc4 28. Bh6 Nxe5 29. Re3 Qd8 30. Bg5 Qc7 31. Rxe5 Qxe5 32. Bxc4 Qc7 33. Bf6 Qd6 34. Bf1 h5 35. Qg5 Kh7 36. g4 Nc3 37. Bd3 Ne4 38. Bxe4 dxe4 39. Ne3 Rg8 40. Be5 Qd8 41. Qxd8 Rxd8 42. Rxa6 Rd7
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