1.
g3
d5
2.
Nf3
c6
3.
Bg2
Bg4
4.
c4
e6
5.
Qb3
Qb6
6.
Qxb6
axb6
7.
d3
Bd6
8.
Nc3
Nf6
9.
e4
Bxf3
10.
Bxf3
d4
11.
Ne2
e5
12.
O-O
Nbd7
13.
Bd2
Nc5
14.
Nc1
O-O
15.
Bd1
Nfd7
16.
f4
f6
17.
a4
b5
18.
cxb5
cxb5
19.
a5
b6
20.
b4
Na6
21.
Bb3+
Kh8
22.
Bd5
Rad8
23.
Bb7
Nxb4
24.
a6
Nc5
25.
Bxb4
Nxb7
26.
axb7
Bxb4
27.
fxe5
Ba5
28.
Nb3
Rb8
29.
exf6
gxf6
30.
Nxa5
bxa5
31.
Rxa5
Rxb7
32.
Rb1
b4
33.
Rb3
Rc8
34.
Ra4
Rc3
35.
Rbxb4
1/2-1/2
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Event
Site
Atlantic City
Date
1972.??.??
Round
1
White
Chellstorp, Craig V
Black
Neff, A
Result
1/2-1/2
[Event "US Open-73"] [Site "Atlantic City"] [Date "1972.??.??"] [Round "1"] [White "Chellstorp, Craig V"] [Black "Neff, A"] [Result "1/2-1/2"] 1. g3 d5 2. Nf3 c6 3. Bg2 Bg4 4. c4 e6 5. Qb3 Qb6 6. Qxb6 axb6 7. d3 Bd6 8. Nc3 Nf6 9. e4 Bxf3 10. Bxf3 d4 11. Ne2 e5 12. O-O Nbd7 13. Bd2 Nc5 14. Nc1 O-O 15. Bd1 Nfd7 16. f4 f6 17. a4 b5 18. cxb5 cxb5 19. a5 b6 20. b4 Na6 21. Bb3+ Kh8 22. Bd5 Rad8 23. Bb7 Nxb4 24. a6 Nc5 25. Bxb4 Nxb7 26. axb7 Bxb4 27. fxe5 Ba5 28. Nb3 Rb8 29. exf6 gxf6 30. Nxa5 bxa5 31. Rxa5 Rxb7 32. Rb1 b4 33. Rb3 Rc8 34. Ra4 Rc3 35. Rbxb4 1/2-1/2