[Event "Wch U20"] [Site "Stockholm"] [Date "1969.??.??"] [Round "3"] [White "Karpow, Anatoli"] [Black "Andersson, Ulf"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "C97"] [Opening "Ruy Lopez: Closed, Chigorin Defense"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 { C97 Ruy Lopez: Closed, Chigorin Defense } 12. Nbd2 Bb7 13. d5 Bc8 14. Nf1 Bd7 15. b3 Nb7 16. c4 Rfb8 17. Ne3 Bf8?! { (1.51 → 2.19) Inaccuracy. g6 was best. } (17... g6 18. Kh2) 18. Nf5?! { (2.19 → 1.46) Inaccuracy. g4 was best. } (18. g4 bxc4 19. bxc4 g6 20. Kh1 Qd8 21. Rg1 Bg7 22. Bd2 h6 23. g5 hxg5 24. Nxg5 Nh5) 18... Nd8 19. Nh2 Ne8 20. h4 f6? { (1.27 → 2.53) Mistake. g6 was best. } (20... g6 21. Nh6+) 21. h5 Nf7 22. Re3 Ng5 23. Nh4 Qd8 24. Rg3 Nc7 25. N2f3 h6 26. Ng6 a5 27. a4 bxc4 28. bxc4 Na6 29. Qe2 Ra7 30. Bd2 Rab7 31. Bc3 Nb4 32. Bd1 Na6 33. Nd2 Nb4 34. Re3 Be8 35. Nf1 Qc8 36. Ng3 Bd7 37. Qd2 Nh7 38. Be2 Kf7 39. Qd1 Be7?! { (2.34 → 3.25) Inaccuracy. Ng5 was best. } (39... Ng5 40. Qd2) 40. Nf1?! { (3.25 → 1.94) Inaccuracy. Nf5 was best. } (40. Nf5 Bxf5 41. exf5 Bd8 42. Bg4 Kg8 43. Kh2 Qd7 44. f4 Nf8 45. Bh3 Bb6 46. Qe2 Bc7) 40... Bd8?! { (1.94 → 2.69) Inaccuracy. Ng5 was best. } (40... Ng5) 41. Nh2? { (2.69 → 0.92) Mistake. Ng3 was best. } (41. Ng3 Ng5 42. f4 exf4 43. Nxf4 Bb6 44. Ng6 Qe8 45. Bd2 Kg8 46. Nf5 Nf7 47. Bg4 Ne5) 41... Kg8 42. Bg4 Ng5?? { (0.65 → 2.90) Blunder. f5 was best. } (42... f5 43. exf5 Nf6 44. f4 Na2 45. fxe5 Nxc3 46. Rxc3 dxe5 47. Nxe5 Nxg4 48. Nhxg4 Bxf5 49. d6) 43. Bxd7 Qxd7 44. Nf1 f5 45. exf5 Qxf5 46. Ng3 Qf7?! { (3.34 → 4.29) Inaccuracy. Qd7 was best. } (46... Qd7 47. Qe2) 47. Qe2 Bf6 48. Rf1 Qd7 49. f4 exf4 50. Rxf4 Bxc3 51. Rxc3 Re8 52. Re3 Rbb8 53. Qf2 Nh7?! { (4.87 → 6.62) Inaccuracy. Qxa4 was best. } (53... Qxa4 54. Kh2) 54. Nf5 Rxe3 55. Qxe3 Nf6 56. Nge7+ Kh8 57. Nxh6 Re8?? { (6.59 → Mate in 7) Checkmate is now unavoidable. Qe8 was best. } (57... Qe8) 58. Nf7+ Kh7 59. Re4? { (Mate in 6 → 7.62) Lost forced checkmate sequence. Ng5+ was best. } (59. Ng5+ Kh6 60. Rxf6+ gxf6 61. Nf7+ Kxh5 62. Qh6+ Kg4 63. Qh3+ Kf4 64. Qf3#) 59... Rxe7 60. Rxe7 { Black resigns. } 1-0