[Event "Goteborg"] [Site "?"] [Round "0"] [White "Bogolyubov"] [Black "Kostic"] [Result "0-1"] [ECO "C68"] [Opening "Spanish: Exchange, 4...dxc6"] {Double pawns accompanied by the Bishop pair} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 f6 6. d4 exd4 7. Qxd4 Qxd4 8. Nxd4 Bd6 9. Be3 Ne7 10. Nb3 b6 11. O-O-O c5 12. Nd2 Be6 13. f4 {A familiar sort of position. White's pawn position is decidedly preferable; a pure pawn ending would be a White win, but the presence of the Black Bishop pair at least restores the balance} 13... O-O-O 14. Nf3 Nc6 (14... -- {threat of trapped Bishop} 15. e5 fxe5 16. fxe5 Nf5 17. Bg5 Be7 18. Bxe7 $16) 15. h3 Rd7 $1 16. g4 {This is what Black was waiting for. It would have been more prudent for White to presure this move with Kb1} ( 16. Kb1) 16... Nd4 17. Nh4 (17. Nxd4 cxd4 18. Rxd4 Bxf4 $1 19. Rxd7 Bxe3+ { intermediate check (that's why Kb1)}) 17... Re8 18. Ng2 Bc4 $1 { The two Bishops are beginning to show their faces} 19. Rhe1 (19. -- Ne2+ 20. Nxe2 Bxe2 {Bf3} 21. Rde1 Bf3) 19... Nb5 $1 { It is now apparent White's pawns are vulnerable; the e-pawn is especially weak} 20. Bd2 Nxc3 21. Bxc3 Rde7 22. e5 fxe5 23. Ne3 Be2 $3 { Black has been working with this pretty move in mind} 24. Rxd6 (24. Rxe2 exf4) (24. Rd2 exf4 25. Nf5 f3 26. Nxe7+ Rxe7 $19) 24... cxd6 25. fxe5 (25. Nf5 exf4 26. Nxd6+ Kd7 27. Nxe8 f3 $1) 25... Bf3 26. Nf5 d5 $1 27. Nxe7+ Rxe7 { Black emerges into a very favourable endgame, which although is not essentail to out theme, it contains some interestingplay} 28. Bd2 Be4 29. c4 Kd7 30. cxd5 Bxd5 31. a3 Rf7 32. h4 Ke6 $1 33. h5 Rf2 34. h6 gxh6 35. Bxh6 Rg2 36. g5 Bb3 $1 37. Rh1 Bc2 38. Bg7 Bd3 39. Rh3 c4 40. b3 b5 41. bxc4 bxc4 42. Bh8 Rxg5 43. Kd2 Kd5 44. Kc3 h5 $1 45. Rh2 Rg3 46. Rd2 Kc5 47. e6 Bf5+ 48. Kb2 Rb3+ 49. Ka2 Bxe6 50. Bd4+ Kc6 51. Ka1 c3 0-1