1. d4 Nf6 2. c4 e6 3. g3 c5 Refusing 3...d5, Black seeks for Indian positions. 4. d5 ed 5. cd b5
[After 5... d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O Black could have had one of the main Modern-Benoni line. But they strive for unknown position]
6. Bg2 d6

7. a4 After quiet 7.Nf3 g6 8.0-0 Bg7 – Black has b7-b5 break. Another popular line is 7.b4, Kasparov - Korchnoy (London, 1983). An idea of the sacrifice is to remove pc5, and then to improve a knight by g1-f3-d4-c6. 7... Qa5
[7... b4 is more popular, providing  a square с4 for a white knight. 8. Nd2 g6 9. Ngf3 Ba6 10. Qc2 Bg7 11. Nc4 O-O 12. O-O Re8 13. Ne1 Bc4 14. Qc4 Nbd7 15. a5 Qe7 16. Nd3 Ne5 17. Ne5 Qe5 with a good game for Black, Ragozin - Botvinnik (Sverdlovsk, 1943).   Making check from а5, Black tries to complicate a position]
8. Qd2
[Inkev - Djuric (Pernic, 1976) after 8. Bd2 b4 9. b3 Nbd7 10. Bg5 Be7 11. Nd2 Ba6 12. Ngf3 h6 13. Bf6 Bf6 14. Rc1 O-O 15. O-O Rfe8 16. Nc4 Bc4 17. Rc4 Nb6 18. Rg4 c4! 19. bc Na4 better for Black.]
8... b4
[Refusing 8... Qd2 9. Nd2 b4 10. b3 Nbd7 11. Bb2, that could allow white pieces to enter the game]
9. b3

9... Qa6 A kind of precautions – Black makes more difficult the move to с4 for white knight. At the same time, black queen is becoming active at a6-f1 diagonal. 10. Bb2 Nbd7 11. e4 Looks very risky.
[After 11. Qe3 Be7 12. Nd2 Bb7 13. Nh3 O-O 14. O-O Rfe8 White would have problems with pd5.;11. Nh3 Be7 12. O-O O-O 13. Nf4 Bb7 14. Qc2 with idea Nb1-d2 looks better] 11... g6 12. f4
[It was high time for 12. Ne2 Bg7 13. O-O]
12... Bg7

13. e5 White opens the position, while they are . 13... de 14. fe Ng4 15. Bf1
[При 15. e6 Nde5 обнажалась слабость поля d3.]
15... Qb7 16. e6 Nde5 17. h3
[17. Bb5 Kf8 18. h3 Be6 19. hg Bd5 Black has a considerable advantage]

17... Be6! 18. Bg2 O-O-O! That's Morphie's way of playing chess! 19. de
[After 19. hg Bd5 20. Rh2 Rhe8 the result is clear.]
19... Qa6 20. Qe2 Nd3 21. Kf1

21... Ne3! Driving white king at 5-th rank. 22. Qe3 Nb2 23. Ne2
[23. Qe2 Rd1 24. Kf2 Bd4 25. Kf3 Rd3-+]
23... Rd1 24. Kf2 Nd3 25. Kf3 Qb7 26. Kg4
[26. Qe4 Qe4 27. Ke4 Nf2 28. Kf4 Nh1 lead to win]
26... h5 27. Kg5 Qe7#

February 02, 2009
GM Alexander Kalinin