D19: Slav Defence: 5 a4 Bf5 6 e3: Main line with 9 Qe2

1. d4 d5 2. c4 2. Bf4 Bf5= 2... c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. e3 e6 Controls d5 7. Bxc4 Bb4 8. O-O White castles and improves king safety 8... Nbd7 9. Qe2 Bg6 10. e4 O-O 11. Bd3 White has a very active position 11... Bh5 12. e5 White gains space 12... Nd5 13. Nxd5 cxd5 14. Qe3 Bg6 15. Ng5 Re8 16. f4 16. Bxg6 hxg6 17. Qf4 Qe7+/= 16... Bxd3 16... Rc8 17. Bxg6 hxg6 18. Bd2= 17. Qxd3+/= f5 18. Be3 Nf8 19. Kh1 Black has a cramped position 19. Qb5 Qb6+/= 19... Rc8 20. g4 White threatens to win material: g4xf5 20. Qb5 Qe7+/= 20... Qd7 21. Rg1 Be7 22. Nf3 Rc4 Black threatens to win material: Rc4xa4 23. Rg2 fxg4 24. Rxg4 Rxa4 Black king safety dropped 25. Rag1 g6 26. h4 Black has a cramped position. Black's piece can't move: f8 26... Rb4 27. h5 Qb5 Black threatens to win material: Qb5xd3 Instead of 27... Rxb2 28. hxg6 h5 29. R4g3+/- 28. Qc2 Rxb2 28... Rb3 29. hxg6 h5+/= (29... Rxe3?? is refuted with the following mate in 2 30. gxh7+ Kh8 31. Rg8#) 29. hxg6+/= h5 29... Rxc2 30. gxh7+ Kxh7 31. Rg7+ Kh8 32. Rg8+ Kh7 33. R1g7+ Kh6 34. f5+ Bg5 35. Rxg5 Qf1+ 36. Ng1 Qf4 37. Bxf4 Rh2+ 38. Kxh2 Re7 39. R5g7+ Kh5 40. Rh8+ Nh7 41. Rhxh7# 29... Nxg6?? That pawn is poisoned 30. Qxg6+ Demolition of pawn structure 30... hxg6 31. Rxg6+ Kh7 32. R6g3+- 30. g7 hxg4 30... Rxc2?? is refuted decisively by mate in 3 31. gxf8=Q+ Kxf8 32. Rg8+ Kf7 33. R1g7# 31. gxf8=Q+ Bxf8?? further deteriorates the position 31... Kxf8 32. Qg6 Qe2 33. Qxg4+/= 32. Qg6+ >= 32. Rxg4+ secures the point 32... Bg7 33. Qc7 Qf1+ 34. Ng1 Qg2+ 35. Rxg2 Rxg2 36. Kxg2+- 32... Bg7+/- 33. f5 White threatens to win material: f5xe6 33... Re7 33... exf5 34. Ng5 Qc6+- 34. f6+/- Qe2 35. Qxg4 Rf7 36. Rc1 36. Qh5 b5+/- (36... Qxe3 37. Ng5 Qxg5 38. Qxg5+-) 36... Rc2+/- 36... Qxe3?? is not directly advisable because of the following mate in 4 37. Rc8+ Kh7 38. Qh5+ Bh6 39. Qxf7+ Bg7 40. Qxg7# 37. Rxc2 37. Re1 Qd3+/= 37... Qd1+ 38. Kg2 White has a mate threat 38... Qxc2+ 39. Kg3 Qe4 40. Bf4 Qf5 41. Qxf5 Less advisable is 41. fxg7 Rxg7 42. Ng5 a5=/+ 41... exf5 42. Bg5 >= 42. Ng5!? must be considered 42... Bxf6 43. Nxf7 Kxf7 44. exf6+/= 42... a5=/+ 43. Kf4 Inferior is 43. fxg7 Rxg7 44. Kf4 a4-/+ 43... a4 44. Kxf5 Worse is 44. fxg7 a3 45. Nd2 a2-+ 44... a3 Black pawn structure deteriorated 45. Bc1 45. Nd2 Rc7 46. Nb3 Bxf6 47. exf6 Kf7-/+ 45... Bf8 45... a2 46. Bb2-/+ 46. e6 Black has to watch this pawn 46. Bxa3!? is worth consideration 46... Bxa3 47. Ke6=/+ 46... Rc7-/+ 47. Bxa3 Bxa3 48. Ke5 White threatens to win material: Ke5xd5 48... Rc1 48... Rc2 49. Kxd5 Rf2 50. Ke4-/+ 49. Ng5 49. Kxd5 Rf1 50. Ke4-/+ 49... Rf1-/+ 50. e7 Re1+ 51. Kxd5 Bxe7 52. fxe7 Rxe7 53. Kd6 Re1 54. d5 Kf8 55. Ne6+ Ke8 56. Nc7+ 56. Nc5 Re7-/+ 56... Kd8-/+ 57. Ne6+ Kc8 58. Ke7 Rh1 59. Ng5?? the position is going down the drain >= 59. Kd6-/+ 59... b5-+ 60. d6 60. Ne6-+ the last chance for counterplay 60... Rd1 61. Ne6 b4 62. Nc5 Re1+ 63. Kf6 Re3 63... Re3 64. Na4 b3-+ 0-1 [Fritz 9 (10s)]