Yoo, Christopher Woojin vs Zierk, Steven
St Louis Fall B 2018 · Round 4.5 · 2018.10.13 · 1/2-1/2 · C16 French Defense: Winawer Variation, Petrosian Variation
Moves
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
71.
72.
73.
74.
PGN
[Event "St Louis Fall B 2018"] [Site "Saint Louis USA"] [Date "2018.10.13"] [Round "4.5"] [White "Yoo, Christopher Woojin"] [Black "Zierk, Steven"] [Result "1/2-1/2"] [PlyCount "148"] [WhiteElo "2410"] [WhiteFideId "30909694"] [WhiteTitle "GM"] [BlackElo "2506"] [BlackFideId "2034255"] [BlackTitle "GM"] [ECO "C16f"] [Source "PGNMentor"] [SourceQuality "1"] [ImportDate "2026-01-06"] 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. Qg4 f5 6. Qg3 b6 7. Nh3 Nc6 8. Bb5 Bb7 9. a3 Bf8 10. Ne2 a6 11. Bd3 O-O-O 12. b4 Nh6 13. b5 Na5 14. bxa6 Bc6 15. Nef4 Nf7 16. O-O g6 17. Be2 Ba4 18. Bd2 Nc6 19. Qc3 g5 20. Nd3 g4 21. Ng5 Na7 22. Nxf7 Qxf7 23. Rfb1 Kd7 24. Nf4 Be7 25. Qb2 Bg5 26. c4 Bxf4 27. Bxf4 Bc6 28. c5 bxc5 29. dxc5 Qe7 30. Qd4 Rb8 31. a4 Rhc8 32. Be3 Qf8 33. Bd3 h5 34. Qf4 Qf7 35. Rxb8 Rxb8 36. Rb1 Kc8 37. Rxb8+ Kxb8 38. Qd4 Qe8 39. Bc2 Kc8 40. Qb2 Kd7 41. Qb4 Qh8 42. Qf4 Qg7 43. Bxf5 exf5 44. Qxf5+ Ke8 45. Qxh5+ Kd8 46. Bg5+ Kc8 47. Qxg4+ Bd7 48. Qf4 Nc6 49. Qf6 Qg8 50. h4 Qe8 51. Bf4 d4 52. h5 Qxh5 53. e6 Be8 54. Qg7 Qd1+ 55. Kh2 Qh5+ 56. Kg3 Qg6+ 57. Qxg6 Bxg6 58. Kg4 Nd8 59. a7 Kb7 60. Bxc7 Nxe6 61. c6+ Kxa7 62. Ba5 d3 63. Kf3 Nd4+ 64. Ke3 Nxc6 65. Bc3 Kb6 66. g4 Ne7 67. Be5 Kc6 68. f4 Nd5+ 69. Kd2 Be4 70. a5 Ne7 71. f5 Ng8 72. Bg7 Kb5 73. f6 Bg6 74. f7 Bxf7 1/2-1/2