Stockfish 15 Demonstrates the POWER of the 150 Attack

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https://stockfishchess.org

DOWNLOAD SOME COOL STOCKFISH 15 GAMES IN PGN FORMAT HERE:
http://ccrl.chessdom.com/ccrl/4040/ga...

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:
1. e4 g6 2. d4 Bg7 3. Nc3 d6 { B06 Modern Defense: Standard Defense } 4. Be3 c6 5. Nf3 b5 6. Bd3 Nf6 7. Qd2 O-O 8. Bh6 Bg4 9. h4 b4 10. Ne2 Nbd7 11. Bxg7 Kxg7 12. h5 Nxh5 13. Ng3 Rh8 14. Nxh5+ Bxh5 15. Nh2 Qb6 16. g4 Bxg4 17. Nxg4 h5 18. Ne3 Qxd4 19. O-O-O Nc5 20. Rdg1?! { (2.03 → 1.11) Inaccuracy. Kb1 was best. } (20. Kb1) 20... e6 21. f4 Rab8 22. Rd1 b3?! { (0.52 → 1.22) Inaccuracy. Na4 was best. } (22... Na4 23. Nc4) 23. Qf2 Nxd3+?? { (0.65 → 2.53) Blunder. Kh7 was best. } (23... Kh7 24. axb3) 24. cxd3 Qc5+ 25. Kb1 bxa2+ 26. Ka1 Rhe8?! { (2.48 → 3.42) Inaccuracy. a5 was best. } (26... a5 27. f5 a4 28. Rc1 Qb4 29. Rc3 exf5 30. exf5 Rhe8 31. d4 a3 32. Rxa3 Rb7 33. fxg6) 27. Rhg1 Kf8 28. d4 Qb4 29. Rd2 Rb5 30. f5 exf5 31. exf5 gxf5 32. d5 Qc5 33. Rd3 Re5 34. Rc3 Qb4 35. Rc4 Qb3 36. Rc3 Qb4 37. Qg2 f4?! { (4.54 → 6.10) Inaccuracy. Qxb2+ was best. } (37... Qxb2+ 38. Qxb2) 38. dxc6 f3 39. Qf2 Rec5 40. Nd5 Rxd5 41. c7 Rdc5 42. c8=R+ Rxc8 43. Rxc8+ Ke7 44. Qe3+ Re5 45. Qxf3 Re1+ 46. Rc1 Rxg1 47. Rxg1 Qa5 48. Rf1 f5 49. Qxh5 Qe5 50. Qxf5 Qxf5 51. Rxf5 Kd7 52. Kxa2 { White wins. } 1-0

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.

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