Mas is back on track after beating Ukraine GM Sergey Krivoshey (2497) in round 4 last night. This victory should boost his confidence for the remaining rounds. Krivosehy (photo right) is not an ordinary GM. The 38 years old GM beat former World Champion - Veselin Topalov in 2005!Mas will meet German FM Andreas Strunski (2397) in round 5 tonight.
IM Mashafizul vs GM Sergey Krivoshey
Banicky Kahanec, Round 4, 7.9.09
Analysed by Hairulov and Rybka 3
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. cxd5 Bxf3 6. Qxf3 cxd5 7. Nc3 Nc6 8. Bd3 e6 9. O-O Bd6 10. Bd2 O-O 11. Rac1 Re8 12. Qh3 e5 13. Nb5 Bb8 14. dxe5 Nxe5
15. Bf5 ?! Probably 15. Be2 followed by Nd4 and doubling the rook on c- file is the correct idea 15... g6 16. Bb1 Ne4 17. Bc3 a6 18. Nd4 Ng5 19. Qh6 The only move. Of course 19. Qh4?? lost to 19...Ngf3+; and 19. Qg3?? lost t0 19... Nef3+ 19... Ng4 20. Qh4 Nxh2
Black simply winning a pawn . 21. Qh6 Ng4 Stronger is 21... Be5! 22. Rfd1 Ng4 23. Qh1. Black can't take the poison rook for e.g 21... Nxf1?? lost to 22. Nc6! 22. Qh4 h5 23. g3 Ne4 A strong alternative is 23... Be5 with the idea of Bf6-followed by Ne4! 24. Qxd8 Rxd8 25. Ba5 Re8 26. a3 Although black is a pawn up, his piece is not cordinated. He also have problem with the weak d5 pawn. White's piece in the other hand is quite active with the bishop pairs, strong knight outpost at d4 and control over the c-file. 26...Ba7 27. Ba2 Ngf6? 27... Rac8 Challenging white control over c file is the correct move. 28. Rc7 b6 ?! better is 28... Bxd4 29. exd4 b6 30. Bxb6 Rab8 31. Ba5 Rxb2 29. Bb4 a5 30. Be1 Rec8 31. Nb5 Rxc7 32. Nxc7 Rd8 33. f3 Ng5 33... Nd6 34. Nxd5 Nxd5 35. Bxd5 Nf5 36. e4 Ne3 34. Bc3 Ngh7 Black knight has to retreat 35. Bd4 Now black's b6 pawn is becoming a target. 35...Rd7? Better or worse black should have try 35... Bb8 36. Bxb6 Rc8 37. Nxd5 Nxd5 38. Bxd5 Bxg3 39. f4 (39. Bxa5 $4 Rc5) 36. Rc1 Rd8 37. Nb5 Bb8 38. Bxb6 White advantge is clear. It amazing to see how Mas turn his position from worse to winning! 38...Re8 39. Kf2 a4 40. Nc7 Rc8 41. Rc3 Ng5 ?!
Black simply winning a pawn . 21. Qh6 Ng4 Stronger is 21... Be5! 22. Rfd1 Ng4 23. Qh1. Black can't take the poison rook for e.g 21... Nxf1?? lost to 22. Nc6! 22. Qh4 h5 23. g3 Ne4 A strong alternative is 23... Be5 with the idea of Bf6-followed by Ne4! 24. Qxd8 Rxd8 25. Ba5 Re8 26. a3 Although black is a pawn up, his piece is not cordinated. He also have problem with the weak d5 pawn. White's piece in the other hand is quite active with the bishop pairs, strong knight outpost at d4 and control over the c-file. 26...Ba7 27. Ba2 Ngf6? 27... Rac8 Challenging white control over c file is the correct move. 28. Rc7 b6 ?! better is 28... Bxd4 29. exd4 b6 30. Bxb6 Rab8 31. Ba5 Rxb2 29. Bb4 a5 30. Be1 Rec8 31. Nb5 Rxc7 32. Nxc7 Rd8 33. f3 Ng5 33... Nd6 34. Nxd5 Nxd5 35. Bxd5 Nf5 36. e4 Ne3 34. Bc3 Ngh7 Black knight has to retreat 35. Bd4 Now black's b6 pawn is becoming a target. 35...Rd7? Better or worse black should have try 35... Bb8 36. Bxb6 Rc8 37. Nxd5 Nxd5 38. Bxd5 Bxg3 39. f4 (39. Bxa5 $4 Rc5) 36. Rc1 Rd8 37. Nb5 Bb8 38. Bxb6 White advantge is clear. It amazing to see how Mas turn his position from worse to winning! 38...Re8 39. Kf2 a4 40. Nc7 Rc8 41. Rc3 Ng5 ?!
41... Bxc7 is lesser evil but i believe the endgame is already lost for black 42. Rxc7 Rxc7 43.Bxc7 42. Nxd5 Nfe4+ 43. fxe4 Nxe4+ 44. Kf3 Nxc3 45. bxc3 also winning is 45. Nxc3 Be5 46. Bd4 45... Bd6 46. Bd4 Bxa3 47. Nb6 Rb8 48. Nxa4 White passed c -pawn gave white the winning advantage. The rest is a amtter of technique. 48... Bd6 49. Nb6 g5 50. c4 h4 51. gxh4 gxh4 52. c5 Bg3 53. Bd5 Kh7 54. Nd7 Rd8 55. Nf6+ Kg6 56. Kg4 Bf2 57. c6 Bg3 58. Be4+ Kh6 59. Bf5 Ra8 60. e4 Bd6 61. Kxh4 Be7 62. c7 1-0 Bravo Mas !
Source: chess-results.com
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