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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:
[Event "CCC 17 Blitz: Main (5|5)"]
[Site "?"]
[Date "2022.06.11"]
[Round "1"]
[White "Stockfish"]
[Black "Stoofvlees"]
[Result "1-0"]
[WhiteElo "?"]
[BlackElo "?"]
[Variant "Standard"]
[TimeControl "300+5"]
[ECO "E10"]
[Opening "Blumenfeld Countergambit"]
[Termination "Unknown"]
[Annotator "lichess.org"]
1. d4 Nf6 2. c4 e6 3. Nf3 c5?! { (0.00 → 0.78) Inaccuracy. d5 was best. } { E10 Blumenfeld Countergambit } (3... d5 4. cxd5 exd5 5. Bf4 c6 6. e3 Bf5 7. Nc3 Nbd7 8. a3) 4. d5 exd5 5. cxd5 Bd6 6. Nc3 Bc7 7. Bg5 d6 8. e3 O-O 9. Bd3 Re8 10. Bh4 Nbd7 11. Qc2 h6 12. O-O-O Ba5 13. Bh7+ Kh8 14. Ne4 Qe7 15. Bf5 Bd8 16. g4 a5 17. Rhg1 a4 18. g5 Nxe4 19. gxh6 g5 20. Bxg5 Nxg5? { (1.28 → 2.52) Mistake. Ndf6 was best. } (20... Ndf6 21. Bxf6+) 21. Rxg5 Ne5?? { (1.14 → 3.96) Blunder. Qxg5 was best. } (21... Qxg5 22. Nxg5 Bxg5 23. Rg1 Bf6 24. Qe2 Ne5 25. Qh5 Re7 26. Bxc8 Rxc8 27. Qf5 Nd7 28. h7) 22. Rg7 Qf6 23. Rh7+ Kg8 24. Rg1+ Kf8 25. Bxc8 Nxf3 26. Rgg7 Ne5 27. Rh8+ Ke7 28. Rxe8+ Kxe8 29. Rg8+ Ke7 30. h7 Rxc8 31. h8=Q Qf3 32. Qh4+ Kd7 33. Qcxa4+ Kc7 34. Qxd8+ Rxd8 35. Qa5+ b6 36. Qa7+ Kc8 37. Qa8+ Kc7 38. Qxd8+ Kb7 39. Qa8+ Kc7 40. Qa7# { White wins. } 1-0