1.
g3
g6
2.
Bg2
Bg7
3.
c4
Nf6
4.
Nf3
O-O
5.
Nc3
d6
6.
d4
Nc6
7.
O-O
e5
8.
d5
Ne7
9.
Rb1
Ne8
10.
e4
f5
11.
Ne2
Nf6
12.
b4
Nxe4
13.
Ng5
Nxg5
14.
Bxg5
h6
15.
Bc1
g5
16.
f4
gxf4
17.
gxf4
e4
18.
Bb2
Rf7
19.
Kh1
Kh7
20.
Ng3
Ng6
21.
Bxg7
Kxg7
22.
Nh5+
Kh7
23.
Rb3
Nh4
24.
Rg1
Bd7
25.
Rg3
Qe7
26.
Qd4
Rd8
27.
Bh3
Nf3
28.
Rg7+
Rxg7
29.
Rxg7+
Kh8
30.
Qa1
1-0
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Event
Site
Aspen
Date
1968.08.??
White
Steffen, J
Black
Kolber, J
Result
1-0
Score
[Event "USA Annual op-ch69"] [Site "Aspen"] [Date "1968.08.??"] [Round "?"] [White "Steffen, J"] [Black "Kolber, J"] [Result "1-0"] 1. g3 g6 2. Bg2 Bg7 3. c4 Nf6 4. Nf3 O-O 5. Nc3 d6 6. d4 Nc6 7. O-O e5 8. d5 Ne7 9. Rb1 Ne8 10. e4 f5 11. Ne2 Nf6 12. b4 Nxe4 13. Ng5 Nxg5 14. Bxg5 h6 15. Bc1 g5 16. f4 gxf4 17. gxf4 e4 18. Bb2 Rf7 19. Kh1 Kh7 20. Ng3 Ng6 21. Bxg7 Kxg7 22. Nh5+ Kh7 23. Rb3 Nh4 24. Rg1 Bd7 25. Rg3 Qe7 26. Qd4 Rd8 27. Bh3 Nf3 28. Rg7+ Rxg7 29. Rxg7+ Kh8 30. Qa1 1-0