1.
c4
Nf6
2.
Nf3
e6
3.
Nc3
c5
4.
g3
Nc6
5.
Bg2
d5
6.
cxd5
Nxd5
7.
O-O
Be7
8.
Nxd5
exd5
9.
d4
O-O
10.
Be3
c4
11.
b3
cxb3
12.
axb3
Qb6
13.
Ne5
Nb4
14.
Nd3
Nxd3
15.
Qxd3
Be6
16.
Bd2
Rac8
17.
Ra5
Rfd8
18.
Rfa1
a6
19.
R5a4
Qc6
20.
e4
g6
21.
Qe3
Bf8
22.
e5
Qd7
23.
Ba5
Re8
24.
R4a2
Rc6
25.
h4
h5
26.
Kh2
Rec8
27.
Bd2
Kh7
28.
Ra5
Rc2
29.
Bf3
Rb2
30.
R1a2
Rxa2
31.
Rxa2
Rc6
32.
Ra5
b5
33.
Bd1
Bg4
34.
f3
Bf5
35.
Ra2
Qc8
36.
Qf4
Kg8
37.
Qe3
Be7
38.
Kg2
Bb1
39.
Rb2
Qf5
40.
Be2
Ba3
41.
Rxb1
Qxb1
42.
Qg5
Bf8
43.
b4
Qb2
44.
Bd3
Bxb4
0-1
Opening Explorer
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Event
Site
Chicago
Date
1986.??.??
Round
1
White
O'Donnell, Robert
Black
Gruenfeld, Yehuda
Result
0-1
BlackElo
2535
[Event "Midwest Masters op"] [Site "Chicago"] [Date "1986.??.??"] [Round "1"] [White "O'Donnell, Robert"] [Black "Gruenfeld, Yehuda"] [Result "0-1"] [BlackElo "2535"] 1. c4 Nf6 2. Nf3 e6 3. Nc3 c5 4. g3 Nc6 5. Bg2 d5 6. cxd5 Nxd5 7. O-O Be7 8. Nxd5 exd5 9. d4 O-O 10. Be3 c4 11. b3 cxb3 12. axb3 Qb6 13. Ne5 Nb4 14. Nd3 Nxd3 15. Qxd3 Be6 16. Bd2 Rac8 17. Ra5 Rfd8 18. Rfa1 a6 19. R5a4 Qc6 20. e4 g6 21. Qe3 Bf8 22. e5 Qd7 23. Ba5 Re8 24. R4a2 Rc6 25. h4 h5 26. Kh2 Rec8 27. Bd2 Kh7 28. Ra5 Rc2 29. Bf3 Rb2 30. R1a2 Rxa2 31. Rxa2 Rc6 32. Ra5 b5 33. Bd1 Bg4 34. f3 Bf5 35. Ra2 Qc8 36. Qf4 Kg8 37. Qe3 Be7 38. Kg2 Bb1 39. Rb2 Qf5 40. Be2 Ba3 41. Rxb1 Qxb1 42. Qg5 Bf8 43. b4 Qb2 44. Bd3 Bxb4 0-1