D47: Semi-Slav: Meran System

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 Black threatens to win material: b5xc4 8. Bd3 Bb7 9. a3 9. e4 b4 10. Na4 c5+/= 9... b4 10. Ne4 Nxe4 11. Bxe4 bxa3 12. O-O White castles and improves king safety 12... Bd6 13. b3 Black has a new passed pawn: a3 Weaker is 13. Rxa3 Bxa3 14. bxa3 O-O-/+ 13... Nf6 14. Nd2 14. Bd3 c5+/= 14... Qc7= 15. Bf3 Worse is 15. Rxa3 Bxh2+ 16. Kh1 Bd6=/+ 15... Bxh2+ 16. Kh1 Bd6 17. Nc4 Be7 18. Bxa3 Not 18. Nxa3 O-O-/+ 18... O-O 19. Bxe7 Qxe7 20. Ra5 Rfd8 21. Kg1 c5 22. Rxc5 Ne4 23. Bxe4 Bxe4 24. Qg4 Bd3 25. Ra1 25. Rc1 Bxc4 26. R1xc4 Qf6+/- 25... Rac8+/= 26. Raa5 Rb8 Black threatens to win material: Rb8xb3 27. Qd1 Be4 28. Qa1 Rb7 29. Nd2 Bg6 30. Qc3 h6 31. Ra6 31. b4 Rdb8 32. b5 Qd8+/- 31... Kh7+/= 32. Nc4 Be4 33. f3 White threatens to win material: f3xe4 33... Bd5 34. Nd2 34. Na5 Rb6+/= 34... Rdb8 The isolani on b3 becomes a target 35. Qd3+ f5 36. Rc3 36. Ra1 Qf6+/= (36... Bxb3? is inferior since it leads to 37. Rc3+-) 36... Qh4= White king safety dropped 37. Ra1 Qg3 38. Qc2 Rf7 39. Rf1 Qg6 White king safety improved 40. Qd3 Qg3 White king safety dropped 41. Rfc1 Rfb7 41... Rd8 42. Qe2= 42. Qc2 42. e4 fxe4 43. Qc2 Qg5+/= 42... Qg5= White king safety improved 43. Ra1 Qf6 44. Qd3 Rd7 45. Ra4 45. Rc5 Rf7+/= 45... Rbd8 46. Rc5 The white rook is well posted. 46... Kg8 46... e5 47. dxe5 Qxe5 48. Rd4= 47. Nc4+/= Bxc4 48. Raxc4 48. Qxc4 f4 49. Re5 fxe3 50. Rxe6 Qf7+/- 48... f4= 49. Rc6 fxe3 50. Qxe3 Rxd4 51. Rxe6 Qh4 52. Rxd4 Qxd4 53. Re8+ Kh7 54. Qxd4 1/2-1/2 [Fritz 9 (10s)]