Thursday, May 14, 2015

Low-level programming language

Baadur Jobava – Evgeny Yurievich Tomashevsky
FIDE Grand Prix; Khanty-Mansiysk, May 13, 2015
Queen’s Gambit Declined D45

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 a6 5. e3 e6 6. b3 c5 7. Bb2 cxd4 8. exd4 Be7. For 8. ... b6 9. cxd5 exd5 10. Ne5 see Sasikiran – Erdos, 17th Croatian Team Chess Championship, Sibenik 2008. 9. Bd3 Nc6 10. 0-0 0-0 11. Rc1 Bd7 12. Re1 Re8 13. c5 Qc7. Tomashevsky afterwards suggested 13. ... b5!? 14. cxb6 Qxb6 15. Na4 Qa7 16. Ne5 Rec8 – it’s interesting! 14. a3 Bf8 15. b4 Rad8 16. h3 g6 17. Rb1 Bg7 18. b5 Na5. If 18. ... axb5 might follow 19. Nxb5 Qb8 20. Nd6 Re7 21. Bc1 (Tomashevsky’s analysis). 19. a4! “White is just technically winning”, then Tomashevsky said. 19. ... Bc8 20. Bc1 h6 21. Qc2. Then Tomashevsky admitted he had a deathly fear of 21. Ne5 Nd7 22. Bf4. 21. ... Nc4. “[...] Jobava has almost winning position, practically, with or without engine, against Tomashevsky”, Grandmaster Teimour Radjabov said.


22. Bxc4?! More consistent would be 22. Qb3! maintaining a strong pressure. 22. ... dxc4 23. Rb4? Baadur evidently underestimates the strength of Black’s rejoinder. After 23. Qa2 e5 24. b6 Qb8 25. dxe5 Bf5 (no better is 25. ... Nd7 26. e6!) 26. exf6 Rxe1+ 27. Nxe1 Bxf6 28. Bd2 Bxb1 29. Nxb1 White still stands better. 23. ... e5! Black turns the tables by this central push. 24. b6 Qb8 25. Rxe5?! As Jobava pointed out, White’s last chance was 25. c6! bxc6 and only then 26. Rxe5 Rxe5 27. Nxe5. 25. ... Rxe5 26. dxe5 Bf5! A powerful “zwischenzug”! 27. Qe2 Bd3 28. Qe3?! Here 28. Qe1! (Tomashevsky) 28. ... Nd7 29. c6! bxc6 30. Bf4 was a little better. 28. ... Nd7 29. Nd5. If 29. e6 then 29. ... Bxc3 30. exf7+ Kxf7 31. Rxc4 Bxc4 32. Qxc3 Be6 33. Bxh6 Nf6 (Jobava’s analysis). 29. ... Nxe5. “Jobava spoiled his position probably miscalculating the consequences of ... e6-e5 by Black. Was certainly close to winning”, Radjabov said. 30. Ne7+ Kh7 31. c6 Nxf3+ 32. gxf3 Qd6 33. Ba3 bxc6. Another way to win is 33. ... Bd4 34. Rxc4 Qg3+. 34. b7 Rb8 35. Nc8 Qd7 36. Qe7 Qxh3 37. Qxf7 Qf1+. Or, even more peremptorily, 37. ... Bf1! and mate in three moves. 38. Kh2 Qxf2+ 39. Kh1 Be2 0 : 1.

Baadur Jobava
Photo: Kirill Merkurev

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