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HERE IS THE LINK WHERE YOU CAN DOWNLOAD THE NEW STOCKFISH 15:
stockfishchess.org
DOWNLOAD SOME COOL STOCKFISH 15 GAMES IN PGN FORMAT HERE:
ccrl.chessdom.com/ccrl/4040/ga...
A new major release of Stockfish is now available at 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 "CCRL 40/15"]
[Site "lichess.org/ADaqQaP8"]
[Date "2022.04.20"]
[Round "820.1.529"]
[White "Stockfish 15 64-bit"]
[Black "Clover 3.1 64-bit"]
[Result "1-0"]
[WhiteElo "?"]
[BlackElo "3300"]
[Variant "Standard"]
[TimeControl "-"]
[ECO "B96"]
[Opening "Sicilian Defense: Najdorf Variation"]
[Termination "Unknown"]
[Annotator "lichess.org"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 { B96 Sicilian Defense: Najdorf Variation } Nbd7 8. Qf3 Qc7 9. O-O-O h6 10. Bh4?! { (0.76 → 0.17) Inaccuracy. Bxf6 was best. } (10. Bxf6 Nxf6) 10... Be7 11. Be2 O-O 12. g4 b5 13. g5? { (1.07 → 0.02) Mistake. a3 was best. } (13. a3 Bb7) 13... hxg5 14. Bxg5 b4 15. Nb1 Bb7 16. Nd2 Rfc8 17. Rhg1 Bf8 18. Qh3 e5?? { (0.14 → 3.25) Blunder. Bxe4 was best. } (18... Bxe4 19. Nxe4 Nxe4 20. Rg2 Rab8 21. Bf3 Ndc5 22. Bxe4 Nxe4 23. Bh6 Qc4 24. Bxg7 Bxg7 25. Qh6) 19. fxe5 dxe5 20. Bc4 exd4 21. Rdf1 b3? { (3.01 → 4.80) Mistake. Qe5 was best. } (21... Qe5 22. Rf5) 22. axb3 Qd6 23. Bxf6 Nxf6 24. Rg4 Rxc4 25. Rh4 Nh7 26. Rxh7 Rxc2+ 27. Kxc2 f6 { White wins. } 1-0