1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Nf3 a6 6. O-O Nc6 7. Nc3 Rb8 8. e4 Be7 9. Qe2 Nxd4 10. Nxd4 Qxd4 11. Rd1 Qc5 12. e5 Nd7 13. Ne4! For the first time this position at me has met in my game vs. Jozef Franzen. In the beginning I have been sure, that White should protect a pawn e5. But neither during a game, nor after it, I did not manage to find any advantage for White after 13.Bf4. And then I have decided to try to return on a move back and to search for advantage after 13.Ne4. This time I had been pleasantly surprised and very pleased, when I have managed to find essential strengthening for White. 13. Bf4 O-O 14. Rac1 Qa5 15. h4 Re8 16. h5 h6 17. Be4 Nf8 18. Bb1 b5 19. Bxh6 gxh6 20. Rd4 f5 21. exf6 Bxf6 22. Rg4+ Bg7 23. Rxg7+ Kxg7 24. Qe5+ Kg8 25. Rd1 Bb7 26. Rd4 Bf3 27. Rf4 Qb4 28. Rxf3 Qd6 29. Qf6 e5 30. Qf7+ Kh8 31. Rf6 Re7 32. Rxd6 Rxf7 33. Rxh6+ Kg8 34. Rxa6 Rd7 35. Bf5 Rd6 36. Ra7 b4 37. Na4 Ne6 38. Bxe6+ Rxe6 39. Rxc7 Ra8 40. Nc5 Rh6 41. Ne4 Rxa2 42. g4 Rb6 43. Rxc4 Rxb2 44. g5 b3 45. Rc8+ Kf7 46. g6+ Kg7 47. Rc7+ Kg8 1/2-1/2 Umansky,M-Franzen,J/Massow Memorial 1996 13... Qxe5 The progress of this game and the analysis show, that acceptance of a sacrifice of a pawn led to a difficult position for Black. My partner was protected, in my opinion, in the best way, but could not to save this game. After this game Black did not have the courage to accept any more a sacrifice of a pawn and selected other continuations: 13... Qb5!? In my opinion, the best continuation , anyway, in this game I could not manage to deny it. 14. Bf4 (14. a4 Qa5 15. Bd2 Bb4 16. Qxc4 Bxd2 17. Rxd2 b5 18. Qc6 O-O 19. f4 bxa4 20. Rxa4 Qb6+ 21. Qxb6 Nxb6 22. Ra2 Bb7 23. Nc5 Bxg2 1/2-1/2 Umansky,M (2524)-Bernhaupt,E (2330)/Chessfriend.com 2004) 14... O-O 15. Rac1 Qa5 16. Qxc4 13... Qb4 14. Qg4 Bf8 15. a3 Qb3 16. Bd2 Qxb2 17. Bc3 Qb6 18. Rab1 Qa7 19. Bd4 c5 20. Nd6+ Bxd6 21. exd6 cxd4 22. Qxg7 Rf8 23. Re1 1-0 Thaler,T (2176)-The World/ChessWorld.net INT 2004/EXT 2005 14. Bf4 Qa5 15. Qxc4 e5 15... Bd8 16. Bd6+/- 16. Bg5!N The novelty essentially strengthening game of White. By means of this move White have managed to hold king of Black in the centre. 16. Bd2? Qb6 17. Be3 c5 18. Nc3 Nf6 19. Qa4+ Bd7 20. Rxd7 Nxd7 21. Rd1 Rd8 22. Nd5 Qd6 23. Bh3 b5 24. Qg4 g6 25. Bg5 Bxg5 26. Qxg5 f5 27. Bxf5 Kf7 28. Be4 Nf6 29. Bg2 Kg7 30. Qe3 Rhe8 31. Nc3 Qe7 32. Re1 c4 33. h4 Rd3 34. Qg5 h6 35. Qc1 Qc5 36. Ne4 Nxe4 37. Rxe4 Red8 38. Re1 Rd2 39. Rf1 Qd4 40. h5 Rf8 41. Qe1 0-1 Klinger,J (2475)-Boensch,U (2490)/Lugano 1989/TD 16... b5 16... f6 17. Be3 Qb5 18. Qxc7 O-O 19. Nc3+- 16... Nf6 17. Nxf6+ (17. b4 Qb6 18. Be3 Be6 (18... c5 19. Bxc5 Qe6 (19... Be6 20. Nxf6+ gxf6 (20... Bxf6 21. Qe4 Qb5 22. Rac1+-) 21. Qc1 Bxc5 22. bxc5 Qa5 23. Qh6 Qxc5 24. Rac1 Qa5 25. Qxf6 O-O 26. Be4 Rfe8 (26... Rbe8 27. Rc4+-) 27. Qg5+ Kf8 (27... Kh8 28. Qh6 f5 29. Bd5+-) 28. Qh6+ Ke7 29. Qh4+ (29. Bf5 Rbd8 30. Bxe6 Qb6 31. Rxd8 Rxd8 32. Qh4+ Kxe6 33. Qh6+ f6 34. Qh3++-) 29... Kf8 30. Qxh7 Rbd8 31. Qh8+ Ke7 32. Qh4+) 20. Nd6+ Bxd6 21. Qxe6+ Bxe6 22. Bxd6 Rd8 23. Bxb7+-) 19. Bxb6 Bxc4 20. Bxc7+/-) 17... Bxf6 18. Bxf6 gxf6 19. Rd8+! Kxd8 20. Qxf7 Bg4 21. Qg7! Re8 22. Qxg4+- 17. Qd3 17. Qc2 f6 18. Be3 c5 19. Nd6+ (19. Nxc5 Nxc5 20. Bxc5 Qc7=/+) 19... Bxd6 20. Rxd6 O-O 21. Be4 (21. Bc6 Qc7 22. Rad1 Rb6 23. Qe4 Kh8<=>) 21... f5 22. Bxf5 Nf6 23. Bxc5 b4+/= 17. Qc1 f6 18. Be3 c5 19. Nxc5 Nxc5 20. Bxc5 Qc7 21. Bxe7 Qxe7 22. Bd5 Kf8~~ 17. Qe2 Bxg5 18. Nxg5 O-O 19. Rxd7 Bxd7 20. Qd3 g6 21. Qxd7 Rbd8<=> 17... f6 17... Qb4 18. Bh3 Qd4 19. Qf3+- 17... f5 18. Bh3 g6 19. Rac1 Bxg5 (19... b4 20. Bxe7 Kxe7 21. Qe3+-) 20. Nxg5 h6 21. Ne6+- 17... Bxg5 18. Nxg5 Qb6 (18... h6 19. Nxf7 Kxf7 20. Bd5++-) 19. Rac1 Qh6 (19... Qg6 20. Qxg6 hxg6 21. Rxc7 Kd8 22. Rdc1 Ke7 23. Bd5 f6 24. Nf7 Rf8 25. R1c6 Rxf7 26. Bxf7 Kxf7 27. Rxc8+-) (19... c5 20. Bd5+-) 20. Rxc7 (20. Nxf7 Kxf7) 20... O-O 21. Nxf7 Kxf7 22. Bd5+ Ke7 23. Bb3+- 18. Be3 f5 18... O-O 19. Qb3+ Kh8 20. Qe6 Bb4 21. a3 Nb6 22. Qa2+/- 18... Nb6 19. Bc5 b4 (19... Bg4 20. b4 Qa4 21. Nc3 Qa3 22. Bxe7 Bxd1 23. Rxd1 Kf7 24. Qc2+-) 20. Rac1 Na4 21. Nxf6+! gxf6 (21... Bxf6 22. Bc6+ Kf7 23. Qb3+ Kg6 24. Be4++-) 22. Bc6+ Kf7 23. Bxe7 Kxe7 (23... Bg4 24. Bxa4 Qxa4 (24... Kxe7 25. Bb3 Bxd1 26. Qxd1+-) 25. Qd5+ Be6 26. Qf3 Kxe7 27. Rxc7++-) 24. Bxa4 Be6 (24... Bg4 25. Bb3 Bxd1 26. Qxd1+-) 25. Bb3+/- 18... Qb4 19. Rac1 f5 20. Qd5 fxe4 21. Rxc7 Rf8 22. Bh3 Qd6 23. Qxd6 Bxd6 24. Rxd6 Rf7 25. Be6 Re7 26. Bg5+- 19. Ng5 Bxg5 20. Bxg5 O-O At last it was possible for Black to castle, but thus they lose for exchange. 20... Qb6 21. Qxf5 Rf8 (21... Qg6 22. Qxg6+ hxg6 23. Bc6+-) 22. Qc2 Qg6 23. Qd2+- 21. Qb3+ Kh8 22. Be7 Qb6 22... Rg8 23. Bc6 Nb6 (23... Nf6 24. Bxf6 gxf6 25. Qf7+-) 24. Qf7 Qa4 25. b4 Qc2 26. Bf6 Be6 27. Qxe6 gxf6 28. Rac1 Qe2 29. Qxf6+ Rg7 30. Rd8++- 23. Bxf8 Nxf8 24. Rac1 Be6 25. Qc3 e4 26. Qxc7 Qxc7 27. Rxc7 Bxa2 28. Ra1 Bc4 29. Rxa6 Rd8 30. h4 Kg8 31. Raa7 Ne6 31... g6 32. h5 gxh5 33. Rg7+ Kh8 34. Rg5 Be6 35. Bh3+/- 32. Rf7 32. Re7 h5 33. Rf7 g6 34. Rf6 Nf8+/= 32... Rd1+ 32... Rd5 33. h5 h6 34. Rfe7 Kf8 35. g4+- 33. Kh2 Rd5 33... g6 34. Rxh7 Rd2 35. Rhd7+- 34. Rfe7 Rd2 34... Rd8 35. Bf1+- 34... Rd6 35. g4+- 35. Re8+ Nf8 36. Raa8 g6 37. Rxf8+ Kg7 38. Rfe8 Rxf2 39. Ra7+ Kf6 40. Ra6+ 1-0 [Umansky]