D47: Semi-Slav: Meran System

1. d4 d5 2. c4 2. Bf4 Nf6= 2... c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Be2 Bb7 9. O-O b4 10. Na4 c5 11. dxc5 Nxc5 12. Bb5+ Ncd7 13. Ne5 Qc7 Black threatens to win material: Qc7xe5 14. Qd4 Rd8 15. Bd2 Qa5 16. Bc6 White threatens to win material: Bc6xb7 16... Be7 17. Rfc1 17. Bxb7?? the bishop is taboo 17... Nxe5 18. Bxb4 Bxb4-+ (18... Rxd4?! is much worse 19. Bxa5 Rxa4 20. Bc3-+) (18... Qxb4?! 19. Qxb4 Bxb4 20. a3-+) (18... <= Qxa4 19. Qxe5 Qxb4 20. Bc6+ Kf8 21. Qc7-+) 17... Bxc6 18. Nxc6 Can b4 get defended? 18... Qxa4 19. Nxd8 Bxd8 20. Qxb4 Qxb4 21. Bxb4 Black wins the exchange. Black cannot castle king side 21... Nd5 22. Bd6 f5 23. Rc8 N5b6 Black threatens to win material: Nb6xc8 24. Rc6 Be7 25. Rd1 Kf7 Black loses the right to castle 26. Rc7 Ra8 27. Rb7 Ke8 28. Bxe7 Kxe7 29. Rc1 a5 30. Rc6 White threatens to win material: Rc6xb6 30... Nd5 31. h4 h6 32. a4 g5 33. hxg5 hxg5 34. Kf1 g4 Black gains space 35. Ke2 N5f6 36. b3 Ne8 37. f3 g3 38. Rc1 Nef6 39. f4 Kd6 40. Kf3 Nd5 41. Kxg3? >= 41. Rb5-/+ 41... Nc5-+ 42. Rg7 42. Rxc5 Kxc5 43. Kf2 Kd6-+ 42... Rb8 43. Ra7 Rg8+ 43... Nxe3 44. Rxc5 Kxc5 45. Rxa5+ Kd4 46. Re5-+ 44. Kf3 >= 44. Kh2 Nxe3 45. Rc3 Rxg2+ 46. Kh3-+ 44... Ne4 45. Ra6+ Ke7 46. Rxa5 46. Ra7+ Kf6 47. Ke2 Rxg2+ 48. Kd3 Rb2-+ 46... Rg3+ 47. Ke2 Rxe3+ 48. Kf1 Rxb3 49. Ra7+ Kf6 50. Ra8 50. Kg1 hardly improves anything 50... Nxf4 51. Rcc7 Rb1+ 52. Kh2 Ne2-+ 50... Nxf4 51. Ra1 51. Rf8+ is the last straw 51... Ke7 52. Rfc8-+ 51... Rb2 52. a5 52. Rg8 Kf7 53. Rg5 Nxg5 54. Re1 Ne4 55. Re3 Rf2+ 56. Kg1 Rxg2+ 57. Kf1 Rf2+ 58. Kg1 Ne2+ 59. Rxe2 Rxe2 60. Kh1 f4 61. Kg1 f3 62. a5 Ng3 63. a6 Rg2# 52... Rf2+ 52... Rf2+ 53. Kg1 Rxg2+ 54. Kf1 Rf2+ 55. Kg1 Ne2+ 56. Kh1 N4g3# 0-1 [Fritz 9 (5s)]