BIG NEWS!!! – The NEW Stockfish 15 is Out and YOU Can Download It For FREE!!

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 “CCRL 40/15”]
[Site “https://lichess.org/PSc72qCH“]
[Date “2022.04.20”]
[Round “820.1.530”]
[White “Clover 3.1 64-bit”]
[Black “Stockfish 15 64-bit”]
[Result “0-1”]
[WhiteElo “3300”]
[BlackElo “?”]
[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 b5 10. e5 Bb7 11. Nxe6 fxe6 12. Qh3 dxe5 13. Qxe6+ Be7 14. Bxf6 gxf6 15. Bxb5 axb5 16. Nxb5 Qc6 17. Nd6+ Kd8 18. Nxb7+ Qxb7 19. Rxd7+ Qxd7 20. Rd1 Qxd1+ 21. Kxd1 Ke8 22. a4 Kf8 23. fxe5 fxe5 24. Qxe5 Rg8 25. Qf4+ Kg7 26. Qg4+ Kh8 27. Qd4+ Rg7 28. Kc1 Rf8 29. Kb1?! { (-0.16 → -0.69) Inaccuracy. c3 was best. } (29. c3 Rf1+) 29… Bf6 30. Qd6 Rgf7 31. h4?! { (-0.07 → -1.00) Inaccuracy. c3 was best. } (31. c3 Bg7 32. Ka2 Ra8 33. Qc6 Rb8 34. Qd6 Rbf8 35. h4 Ra8 36. Qb4 Rfa7 37. Kb3 Rf8) 31… Ra8 32. Qc6 Rb8 33. c3 Bg7 34. Qc5 Rfb7 35. b4 Re8 36. a5 Rbb8 37. a6 Rbc8 38. Qb5 Rf8 39. c4 Rcd8 40. Qg5 h6 41. Qe3 Rfe8 42. Qf3 Rd2 43. Kc1 Ra2 44. Kd1 Rd8+ 45. Ke1 Re8+ 46. Kd1 Rd8+ 47. Ke1 Ra1+ 48. Ke2 Re8+ 49. Kd2 Rxa6 50. Qb7 Ra2+ 51. Kd3 Ra3+ 52. Kd2 Bc3+ 53. Kd3 Bxb4+ 54. Kd4 Bc3+ 55. Kd5 { Black wins. } 0-1