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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.
Hello chess friends and welcome to a new opening series, welcome to our studies of the 150 attack. With this attack you can destroy the Pirc or Modern defense easily.The setup f2-f3, Be3 and Qd2 is commonly used against the King's Indian Defence and Dragon Sicilian, and can also be used against the Pirc; indeed, this system is as old as the Pirc itself.
The system 4.f3 was introduced by Argentine players c. 1930 and again in 1950. It was never considered dangerous for Black because of 4.f3 Bg7 5.Be3 c6 6.Qd2 b5. It received a severe blow in about 1985, when Gennady Zaichik showed that Black could castle anyway and play a dangerous gambit with 5...0-0 6.Qd2 e5.
The Argentines feared the sally ...Ng4, though some British players (especially Mark Hebden, Paul Motwani, Gary Lane, later also Michael Adams) came to realise that this was mainly dangerous for Black, therefore playing Be3 and Qd2 in all sorts of move orders, whilst omitting f2-f3. They called this the 150 Attack, because players of this strength (ELO 1800) can easily play this position and get strong play without any theory.[10]
The original Argentine idea probably is only viable after 4.Be3 Bg7 5.Qd2 0-0 6.0-0-0 c6 (or Nc6) 7.f3 b5 8.h4. Black usually does not castle though and prefers 5...c6 or even 4...c6. The question of whether and when to insert Nf3 remains unclear.
PGN:
[Event "CCRL 40/15"]
[Site "CCRL"]
[Date "2022.04.23"]
[Round "821.1.487"]
[White "Stockfish 15 64-bit"]
[Black "Nemorino 6.00 64-bit"]
[Result "1-0"]
[WhiteElo "3528"]
[BlackElo "3344"]
[Variant "Standard"]
[TimeControl "-"]
[ECO "C52"]
[Opening "Italian Game: Evans Gambit, Pierce Defense"]
[Termination "Unknown"]
[Annotator "lichess.org"]
1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4?! { (0.20 → -0.48) Inaccuracy. c3 was best. } (4. c3 Nf6 5. d3 a5 6. O-O d6 7. Re1 O-O 8. Nbd2 Bb6) 4... Bxb4 5. c3 Ba5 6. d4 exd4 7. Qb3 Qf6 8. O-O Bb6 9. e5 Qg6 10. cxd4 Na5 11. Qc3 Nxc4 12. Qxc4 Ne7 13. Ba3 Qc6 14. Qe2 d5 15. exd6 cxd6 16. d5 Qd7 17. Re1 Bd8 18. Nbd2 O-O 19. Nc4 Nf5 20. Rad1 Bc7 21. h3 Qa4 22. Qd3 b5 23. Nb2 Qa6 24. g4 Ba5 25. gxf5 Bxe1 26. Rxe1 Bxf5 27. Qxf5 Qxa3 28. Nd1 Qxa2 29. Ne3 h6 30. Nd4 b4 31. Qg4?! { (0.70 → 0.00) Inaccuracy. Kh2 was best. } (31. Kh2) 31... Kh7 32. Nef5 g6 33. Ne3 Rae8 34. Qf4 Kg8? { (0.47 → 2.02) Mistake. b3 was best. } (34... b3 35. Kh2) 35. Ndf5 Qb2 36. Nxh6+ Kg7 37. Nhf5+ Kg8 38. Nxd6 Qe5 39. Qxb4 a5 40. Qc5 Qg5+ 41. Kf1 Re7 42. Qd4 Qh5? { (2.53 → 4.34) Mistake. f5 was best. } (42... f5 43. h4) 43. Qf6 Re5 44. h4 a4 45. Qf4 Re7 46. Ne4 Qe5 47. Qxe5 Rxe5 48. Ng4 Rxe4 49. Nf6+ Kg7 50. Nxe4 Rd8 51. Rd1 a3 { White wins. } 1-0