1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. c4 Bb7 5. Qc2 bxc4 6. e4
In the game Tkachiev, V - Conquest, S, 2nd IECC, Ohrid 2001 (1-0, 38) Black played 6...e6 7. Bxc4 exd5 8. exd5 Be7 9. Nc3 d6 10. O-O Nbd7 11. a4 Nb6 12. Bb5+ Kf8 13. Bc6 Bxc6 14. dxc6 Qc8 15. b4 Qxc6 16. b5 Qb7 17. Rd1 h5 18. a5 Nc8 19. Bg5 and White has good compensation for a pawn. Now Conquest decided to play this variation for White.
6...g6 7. Bxc4 Bg7 8. Nc3

   
8...O-O?
The decisive mistake. Now White launches an attack on the kingside.
Correct is 8... d6 9. O-O O-O.
9. e5 Ne8 10. h4! d6 11. h5 dxe5 12. hxg6 hxg6 13. Qe4 Nd6?!
More precise is 13... Nd7 14. Qh4 Nef6 15. Bh6 Nh5! Here White must play 16. g4!, because 16. Bxg7? leads to unclear play after 16...Kxg7 17. Bb5 (17. g4 Rh8! 18. O-O-O Nf4 19. Qg3 Qc7) 17... Ndf6 18. Qg5 Rh8 19. Qxe5 Qd6.
Better is 16. g4! Bxh6 17. gxh5 Kg7 (17... Qb6 18. Rb1 Bg7 19. hxg6 Qxg6 20. Qxe7 Rad8 21. Rg1 Qh5 22. Be2 Rfe8 23. Qh4) 18. hxg6 Rh8 19. Qg4! Nf6 20. Qg2 Qb6 21. gxf7+ Kf8 22. Rb1 Nd7 23. Nh4 winning.
14. Qh4 f6 15. Bd3 e4 16. Nxe4 Nf5 17. Qh7+ Kf7 18. Neg5+!
A nice blow.
18...fxg5

   
19. Ne5+! Kf6 20. Qxg6+ Kxe5 21. Qe6+ Kd4 22. Qe4 checkmate.
A rare position in the modern chess.
Black resigned. 1-0

Move

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. c4 Bb7 5. Qc2 bxc4 6. e4 g6 7. Bxc4 Bg7 8. Nc3 O-O? 9. e5 Ne8 10. h4! d6 11. h5 dxe5 12. hxg6 hxg6 13. Qe4 Nd6?! 14. Qh4 f6 15. Bd3 e4 16. Nxe4 Nf5 17. Qh7+ Kf7 18. Neg5+! fxg5 19. Ne5+! Kf6 20. Qxg6+ Kxe5 21. Qe6+ Kd4 22. Qe4+ 1-0

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