[Event "USSR"] [Site "?"] [Round "0"] [White "Taimanov"] [Black "Abramov"] [Result "1-0"] [ECO "E20"] [Opening "Nimzo-Indian Defence"] {Preparation and execution of the advance Pe4} 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d5 6. cxd5 exd5 7. e3 O-O 8. Bd3 Re8 {The next few moves are easy to understand. White strives for the central push Pe4, Black tries to stop him} 9. Ne2 Nbd7 (9... c5 10. O-O b6 11. Ng3 Ba6 { Black trades off White's strong bishop} 12. Bxa6 Nxa6 13. Qd3 { White will soon be able to play Pe4}) 10. O-O Nf8 11. f3 Ng6 12. Qe1 c5 13. Qf2 {Reinforcing Pd4 so as to prepare Pe4} 13... Qc7 14. Bd2 b5 15. Ng3 Bb7 16. Rae1 Rad8 17. h3 { Now it seems White can play Pe4, as both Pd4 and Pe4 are protected} (17. e4 cxd4 18. cxd4 dxe4 19. fxe4 Ng4 20. Qe2 Rxd4 $1 {Ruining White's dream}) 17... Qd6 {Threatening to win a pawn and preventing Pe4} 18. Bc1 (18. -- cxd4) 18... Re6 19. Re2 Bc6 {Note Black can't doublr Rooks on the e-file, since that would relax pressure on Pd4} 20. Rfe1 Ba8 { Black has nothing constructive to do now, and so marks time} 21. Nf5 { White tries another tack. He diverts one piece from control of e4 to have d4 fully covered} 21... Qc7 22. Bd2 (22. e4 dxe4 23. fxe4 cxd4 24. cxd4 Nxe4 25. Bxe4 Bxe4 26. Rxe4 Rxe4 27. Rxe4 Qxc1+ $17) 22... Rde8 23. Ng3 Qd6 {White's exc ellent maneuvering has decoyed Black's Rook from d8 to e8, thus reducing pressure on d4} 24. Bf5 R6e7 25. e4 $1 {Finally! Now White's central expansion quickly leads to a powerful Kingside attack. True Black wins the a-pawn, but this is a comparatively small detail} 25... dxe4 26. fxe4 cxd4 27. cxd4 Qxa3 28. Bg5 {White now gives up the two Bishops in order to wreck Black's kingside pawn structure} 28... h6 29. Bxf6 gxf6 30. Nh5 Rd8 31. Nxf6+ Kh8 32. e5 Qb4 33. Be4 {Exchanging Black's Queen Bishop and indirectly defending the d-pawn} 33... Bxe4 34. Rxe4 Rc7 35. h4 a5 36. h5 Ne7 37. Ng4 (37. Qe3) 37... Ng8 38. Nxh6 Qe7 39. Qf4 Qe6 40. Nf5 Ne7 41. Nxe7 Rxe7 42. R1e3 Kh7 43. Rg3 Ree8 44. Qf3 f5 45. Rf4 Rg8 46. Rxg8 Kxg8 47. Rxf5 Rxd4 48. Rf6 Qe8 (48... Qxe5 49. Rg6+ Kh8 50. Qf8+ Kh7 51. Qg8#) 49. Qg3+ Kh7 50. Qg6+ 1-0