反證法

Baadur Jobava – Shakhriyar Mamedyarov
FIDE Grand Prix; Tbilisi, February 20, 2015
Larsen’s Opening A01

1. b3 Nf6 2. Bb2 g6 3. Nc3 Bg7 4. d4 c5 5. e3 cxd4 6. exd4 d5 7. Qd2 Nc6 8. 0-0-0. For the immediate 8. f3 h5 see Jobava – Carlsen, 77th Tata Steel Chess Tournament, Wijk aan Zee 2015. 8. ... Qa5 9. f3 h5 10. Kb1 Bf5 11. Bd3 Nxd4 12. Nge2 Nxe2 13. Qxe2 Bd7 14. Rhe1 e6

15. Bxg6!?? A typically Jobava idea. 15. ... fxg6 16. Nxd5 Nxd5 17. Bxg7 Rg8 18. Qe5 Rxg7? 18. ... Qc7! (possibly followed by ... 0-0-0) would have seriously questioned Jobava’s Bishop sacrifice. 19. Rxd5! Maybe Mamedyarov was expecting only 19. Qxg7? Nc3+ 20. Kb2 Nxd1+ 21. Rxd1 0-0-0 with advantage to Black. 19. ... Qb4 20. Rd6 Kf8 21. Red1 Bc6? From bad to worse. 22. R1d4? Simply incredible! Baadur misses an easy win: 22. Rd8+ Rxd8 23. Rxd8+ Kf7 24. a3! Qe7 25. Qf4+ Qf6 26. Rf8+! and Black can resign. 22. ... Qb5 23. Rd8+ Rxd8 24. Rxd8+ Ke7 25. Qd6+ Kf6 26. Qd4+. Also after 26. Rf8+ Rf7 27. Qd8+ Kg7 28. Rg8+ Kh7 29. Rh8+ Kg7 White has no more than than a draw by perpetual check. 26. ... Kf7?? A tragicomic blunder! The obvious 26. ... Ke7 27. Qd6+ Kf6 leaves nothing but a draw. 27. Qf4+ 1 : 0. Just one move before checkmate: 27. ... Ke7 28. Qf8 mate.

Baadur Jobava
Photo: Maria Alekseevna Emelianova