1.
d4
Nf6
2.
Nf3
g6
3.
c4
c5
4.
d5
b5
5.
cxb5
a6
6.
bxa6
Bxa6
7.
Nc3
d6
8.
e4
Bxf1
9.
Kxf1
Nbd7
10.
g3
Bg7
11.
Kg2
O-O
12.
Qe2
Qa5
13.
Bg5
h6
14.
Be3
Rfb8
15.
Rab1
Ng4
16.
Bd2
Qa6
17.
Qxa6
Rxa6
18.
a3
Nge5
19.
Nxe5
Nxe5
20.
Ne2
Nc4
21.
Bc3
Rab6
22.
Bxg7
Kxg7
23.
b4
Nxa3
24.
Rb3
Nc2
25.
Rc1
Nxb4
26.
Ra3
R6b7
27.
Rc4
Rd8
28.
h4
Rdd7
29.
Nf4
Ra7
30.
Rac3
Ra2
31.
g4
Rda7
32.
Nd3
Nxd3
33.
Rxd3
Rb2
34.
Kg3
Ra1
35.
Rdc3
Rf1
36.
f3
Rg1+
37.
Kf4
Kf6
38.
g5+
hxg5+
39.
hxg5+
Rxg5
40.
Rc2
Rg2
0-1
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Event
Site
Chicago
Date
1973.??.??
Round
4
White
Dunham, Gordon
Black
Jacobs, John N
Result
0-1
Score
[Event "US Open-74"] [Site "Chicago"] [Date "1973.??.??"] [Round "4"] [White "Dunham, Gordon"] [Black "Jacobs, John N"] [Result "0-1"] 1. d4 Nf6 2. Nf3 g6 3. c4 c5 4. d5 b5 5. cxb5 a6 6. bxa6 Bxa6 7. Nc3 d6 8. e4 Bxf1 9. Kxf1 Nbd7 10. g3 Bg7 11. Kg2 O-O 12. Qe2 Qa5 13. Bg5 h6 14. Be3 Rfb8 15. Rab1 Ng4 16. Bd2 Qa6 17. Qxa6 Rxa6 18. a3 Nge5 19. Nxe5 Nxe5 20. Ne2 Nc4 21. Bc3 Rab6 22. Bxg7 Kxg7 23. b4 Nxa3 24. Rb3 Nc2 25. Rc1 Nxb4 26. Ra3 R6b7 27. Rc4 Rd8 28. h4 Rdd7 29. Nf4 Ra7 30. Rac3 Ra2 31. g4 Rda7 32. Nd3 Nxd3 33. Rxd3 Rb2 34. Kg3 Ra1 35. Rdc3 Rf1 36. f3 Rg1+ 37. Kf4 Kf6 38. g5+ hxg5+ 39. hxg5+ Rxg5 40. Rc2 Rg2 0-1