schwarz813 vs Kibul_CZ

How it swung

The one slip

7...O-O cost 1.6 pawns. ♘xe4 would have held it.

The position went from better to level.

The point: 8.O-O ♗xc3 9.♗d3 d5

The score

1. 1. e4 e5
2. 2. Nf3 Nc6
3. 3. Bc4 Bc5
4. 4. c3 Nf6
5. 5. d4 exd4
6. 6. cxd4 Bb4+
7. 7. Nc3 O-O
8. 8. Bg5 d6
9. 9. h3 h6
10. 10. Bh4 Re8
11. 11. O-O Bxc3
12. 12. bxc3 Rxe4
13. 13. Re1 Rxe1+
14. 14. Qxe1 Bf5
15. 15. d5 Na5
16. 16. Bb3 Nxb3
17. 17. axb3 g5
18. 18. Nxg5 hxg5
19. 19. Bxg5 Kg7
20. 20. Qe3 Qe8
21. 21. Bh6+ Kh7
22. 22. Qg5 Qh8
23. 23. Re1 Rg8
24. 24. Qf4 Rg6
25. 25. Qxf5 Kxh6
26. 26. Re7 Kg7
27. 27. Rxc7 Qh5
28. 28. Qxh5 Nxh5
29. 29. Rxb7 Nf4
30. 30. g3 Nxh3+
31. 31. Kg2 Nf4+
32. 32. Kf1 Nxd5
33. 33. Rxa7 Nxc3
34. 34. Rc7 Ne4
35. 35. Ke2 d5
36. 36. Ke3 Rb6
37. 37. Rd7 Rxb3+
38. 38. Kf4 Rd3
39. 39. f3 Nf2
40. 40. g4 Rd1
41. 41. Ke3 Nh3
42. 42. Ke2 Rb1
43. 43. Ke3 Re1+
44. 44. Kd2 Rf1
45. 45. Ke2 Rb1
46. 46. Ke3 Rb3+
47. 47. Ke2 Ng5
48. 48. f4 Ne6
49. 49. f5 Nf4+
50. 50. Kf2 Kf6
51. 51. Ra7 d4
52. 52. Ra4 Ke5
53. 53. Ra1 Ke4
54. 54. Re1+ Re3
55. 55. Rd1 d3
56. 56. Ra1 d2
57. 57. Rd1 Nd3+
58. 58. Kg2 Re2+
59. 59. Kg3 Nb2
60. 60. Ra1 Re1
61. 61. Ra8 d1=Q
62. 62. Re8+ Kd3
63. 63. Rd8+ Kc2
64. 64. Rxd1 Kxd1
65. 65. Kh4 Rh1+
66. 66. Kg5 Ke2
67. 67. Kf6 Kf3
68. 68. g5 Nc4
69. 69. Kxf7 Kf4
70. 70. Kf6 Rg1
71. 71. g6 Nd6
72. 72. Kg7 Kxf5
73. 73. Kf8 Rxg6
74. 74. Ke7 Nc4
75. 75. Kd7 Ke5
76. 76. Kc7 Re6
77. 77. Kb7 Kd5
78. 78. Kc7 Rd6
79. 79. Kb7 Kc5
80. 80. Kc7 Rg6
81. 81. Kb7 Kb5
82. 82. Ka7 Rc6
83. 83. Kb8 Kb6
84. 84. Ka8 Rc5
85. 85. Kb8 Rc6
86. 86. Ka8 Rc8#