D27: Queen's Gambit Accepted: Classical main line: 7 e4!? and 7 a4

1. d4 d5 2. c4 2. Bf4 Bf5= 2... c6 3. Nf3 Nf6 4. e3 e6 5. Bd3 dxc4 6. Bxc4 c5 7. O-O a6 Secures b5 8. Bb3 8. e4 Nxe4 9. d5 Nd6 10. dxe6 fxe6+/- 8... cxd4+/= 9. exd4 Nc6 10. Nc3 Be7 White has an active position 11. Re1 O-O 12. a4 12. Bf4 Qb6+/= 12... Bd7 13. Ne5 Be8 14. Be3 White has a very active position 14... Rc8 15. Rc1 Nb4 16. Qf3 White threatens to win material: Qf3xb7 16... Bc6 Black threatens to win material: Bc6xf3 17. Qh3 Bd5 18. Nxd5 Nbxd5 The knight is not easily driven from d5 19. Rcd1 White has an active position 19... Rc7 20. Bg5 Qc8 Black has a cramped position 21. Qf3 Rd8 22. h4 22. Bxf6 Bxf6 23. Ng4 Bg5= 22... h6 22... b5 23. axb5 axb5 24. Bd2= 23. Bc1 23. Bd2!?+/= looks like a viable alternative 23... Bb4= Black threatens to win material: Bb4xe1 24. Rf1 Bd6 25. g3 Consolidates f4 25... b6 26. Qe2 26. g4 Bxe5 27. dxe5 Nd7= 26... Ne7 26... Qb7 27. g4 Bxe5 28. dxe5 Rxc1 29. exf6=/+ (29. Rxc1?? Nf4 30. f3 Nxe2+ 31. Kf2 Nxc1 32. Rxc1 Rd2+ 33. Ke1 Rxb2-+) 27. Rfe1 Bxe5 28. dxe5 Rxd1 29. Qxd1 Nfd5 30. Bd2 Rc5 31. Qg4 Nf5 32. Qe4 b5 33. h5 bxa4 34. Qxa4 34. Bxa4? Rc4 35. Bd7 Qc5-+ 34... Rb5 35. Rc1 White threatens to win material: Rc1xc8 35... Qb7 36. Bc2 Nb6 Black threatens to win material: Nb6xa4 37. Qg4 Rxb2 Black has a new passed pawn: a6. Weaker is 37... Rxe5 38. Bc3 Nd7 39. Rd1+- 38. Be4 White threatens to win material: Be4xb7 38... Qd7 Black threatens to win material: Qd7xd2 39. Be1 Nd5 40. Bd3 White threatens to win material: Bd3xa6 40. Qf3!?= 40... Nb4=/+ 41. Bf1 Nd3 Black threatens to win material: Nd3xc1 42. Qd1 Nxe5 43. Qxd7 Nxd7 44. Rc8+ Kh7 45. Rc7 White threatens to win material: Rc7xd7 45... Rb1 45... Nf6 46. Bxa6 Nd5 47. Rd7-/+ 46. Rxd7= Rxe1 47. Rxf7 a5 48. Kg2 Kg8 Black threatens to win material: Kg8xf7 49. Ra7 Re5 50. g4 White threatens to win material: g4xf5 50... Nd6 51. Bd3 Kf8 52. Bg6 White can be proud of that piece 52... Rd5 53. f3 Covers e4 53... e5 White has a new backward pawn: f3 54. Kf2 Rd2+ 55. Ke1 Rd5 56. Ke2 Rb5 57. Rd7 White threatens to win material: Rd7xd6 57... Rd5 58. Ra7 Rb5 Twofold repetition 59. Bd3 White threatens to win material: Bd3xb5 59. Rd7!? Rb6 60. Ra7=/+ 59... Rd5 59... Rb2+!? 60. Kd1 Rb3=/+ 60. Bg6= 1/2-1/2 [Fritz 9 (10s)]