1.
e4
Nf6
2.
e5
Nd5
3.
d4
d6
4.
Nf3
g6
5.
Bc4
Nb6
6.
Bb3
Bg7
7.
Ng5
d5
8.
f4
f6
9.
Nf3
O-O
10.
O-O
Nc6
11.
c3
Bg4
12.
Nbd2
Qd7
13.
h3
Bxf3
14.
Nxf3
Nd8
15.
Bc2
f5
16.
Ng5
Ne6
17.
Nxe6
Qxe6
18.
g4
Rac8
19.
Rf2
Kh8
20.
Kh1
c5
21.
Rg2
cxd4
22.
cxd4
Rc6
23.
Bd3
Qf7
24.
b3
Rfc8
25.
Bd2
Bf8
26.
gxf5
gxf5
27.
Qf3
Rh6
28.
Rag1
e6
29.
Rg3
Be7
30.
Qg2
Rf8
31.
Bb5
Rd8
32.
Rg7
Qf8
33.
Ba5
Rc8
34.
Kh2
Rd8
35.
Bd2
Na8
36.
Ba5
Nb6
37.
a3
Rc8
38.
a4
Rd8
39.
Bb4
Nc8
40.
Bd7
Bxb4
41.
Qg5
Rg6
42.
Rxh7+
1-0
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Event
Site
Las Vegas
Date
1974.03.22
Round
8
White
Grefe, John Alan
Black
Dunning, John
Result
1-0
Score
[Event "Las Vegas National op"] [Site "Las Vegas"] [Date "1974.03.22"] [Round "8"] [White "Grefe, John Alan"] [Black "Dunning, John"] [Result "1-0"] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. Ng5 d5 8. f4 f6 9. Nf3 O-O 10. O-O Nc6 11. c3 Bg4 12. Nbd2 Qd7 13. h3 Bxf3 14. Nxf3 Nd8 15. Bc2 f5 16. Ng5 Ne6 17. Nxe6 Qxe6 18. g4 Rac8 19. Rf2 Kh8 20. Kh1 c5 21. Rg2 cxd4 22. cxd4 Rc6 23. Bd3 Qf7 24. b3 Rfc8 25. Bd2 Bf8 26. gxf5 gxf5 27. Qf3 Rh6 28. Rag1 e6 29. Rg3 Be7 30. Qg2 Rf8 31. Bb5 Rd8 32. Rg7 Qf8 33. Ba5 Rc8 34. Kh2 Rd8 35. Bd2 Na8 36. Ba5 Nb6 37. a3 Rc8 38. a4 Rd8 39. Bb4 Nc8 40. Bd7 Bxb4 41. Qg5 Rg6 42. Rxh7+ 1-0