Jahongir Vakhidov - Mashafizul

IM  Jahongir Vakhidov (2392)  - IM Mashafizul (2413)
KL Open, Round 4, 6.9.2011

Analysed by Centaur (Hairulov+Houdini)

1.d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 e5 5. Nb5 d5 6. cxd5 Bc5

 
Black sac a pawn for development. 



7. N5c3 O-O 8. g3 Qb6 9. e3 Bg4 10. Be2 Bxe2 11. Qxe2 e4 12. a3 Re8 13. Nd2 Qc7 14. O-O Nbd7 15. Rd1 Rad8 16. b3 Qe5 17. Bb2 Qf5 Less advisable is 17... Nxd5 18. Ndxe4 Nxc3 19. Nxc3   

18. b4 Bf8 19. f3?! This move weaken white's ,pawn formation. 19. Nb5 Is probably the correct move. If Nxd5 20. Nxa7

19... exf3 20. Nxf3 Nb6 Now all is on d5. Black threatens to win material: Nb6xd5  

21. Nh4 Qg5 Attacking the backward pawn on e3

22. e4 Nfxd5 23. Nxd5 Nxd5 Black got his pawn back.  

24. Nf3 Qg4 25. e5 Nf4 26. Qe3 Ne6 27. Kg2 a5 28. h3 Qc4 28... Qg6!? looks better because black's queen can't be harass by white's peice.  

29. Rdc1 Qb5 30. a4 Qd5 Stronger  is 30... Rd3! 31. Qe2 (31. axb5 Rxe3 32.
Kf2 Rb3) 31... Qd7 32. bxa5 Ng5! Threatening Rd2  

31. Rd1 Qc4 32. Rdc1 Qd3 33. Qxd3 Rxd3 34. bxa5 Bb4 35. Rc4 Rb3 36. Rc2 Rd8 37. Rf1 h6
Black make a luft before moving his rook into white territory  

38. Bc1 Bxa5 39. Nh4 Bc7 40. Rf3 Rb1 41. Bb2? With hindsight, white's bishop need go to e3 square to protect the g1-a7 because black's threaten to play Rd1 (attacking the g1 square) and Bb6   

41... Rdd1 Now black's has a strong initiative  

42. Rff2 

42...Rg1+  Houdini show the winning move  42... Bb6! which should secures the point.  43. Rfd2 Rg1+ 44. Kh2 (44. Kf3 Rbf1+ 45. Ke4 Rxg3) 44... Be3 45. Rd3 (45. Re2 Nf4 $1 46. gxf4 Bxf4#) 45... Nf4 $3 46. gxf4 Bxf4+ and mate next move.

 43. Kf3 h5 Probably black should restrict white's king mobility with 43...Rbe1!?

44. Rg2 Ng5+ 45. Ke3 Bb6+ 46. Kd3 Nxh3 Black win a pawn.  

47. Nf5 Rbd1+ 48. Kc4 White's king look active   

48... Rxg2 49. Rxg2 Ng5?! better is 49... Nf2 50. Nd6 Rb1 which indirectly protect the b7 pawn after for e.g 51. Bd4 Rc1+ 52. Kd5 Rd1  

50. Nd6 Now black's b pawn will be capture and after  

50...Nf3 51. Nxb7 White has a dangerous  passed pawn: a4.  

51...Re1 52. a5 Ba7 53. Kd5 g5 54. a6  g4 Black pawns on king side is just to slow compare to white a pawn.

55. Na5 Rd1+ 56. Kc6 Kf8 57. Kc7 Rd5 58. Nc6 Be3 59. Bc1!!

This sacrifice busts up the opponent's position 1-0  Black bishop can't remain on the a7-g1 diaganol to stop white's a-pawn from queening for e.g.   

 59...Bxc1 60.a7!
 
59... Bc5 60. Ba3!

59... Bg1 60.Rxg1!

59... Bd4 60. Nxd4 Rxd4 61. Ba3+ Kg8 62. a7 Ra4 63. Bc5 and white will play Kb7 next.