1.
b4
a5
2.
b5
Nf6
3.
Bb2
d5
4.
e3
Bf5
5.
Nf3
e6
6.
c4
Nbd7
7.
d3
dxc4
8.
dxc4
Bxb1
9.
Rxb1
Bb4+
10.
Ke2
Qe7
11.
Qc2
O-O
12.
g3
Rac8
13.
Bg2
Qc5
14.
Rbd1
c6
15.
Bd4
Qe7
16.
bxc6
Rxc6
17.
Ne5
Nxe5
18.
Bxe5
Rcc8
19.
Qb3
Nd7
20.
Ba1
f6
21.
Bd4
Rc7
22.
Rc1
Rfc8
23.
Rc2
b5
24.
c5
Nxc5
25.
Bxc5
Rxc5
26.
Rxc5
Rxc5
27.
Bh3
Kf7
28.
Rd1
f5
29.
a3
Bxa3
30.
Kf1
Bb4
31.
e4
Rc3
32.
Qb1
g6
33.
exf5
gxf5
34.
Re1
Qd7
35.
Qa2
Qd3+
36.
Kg1
Rb3
37.
Bf1
Qd5
38.
Rc1
Ba3
39.
Rc7+
Kg6
40.
Qc2
Rb2
41.
Qc1
Qd4
42.
Qe1
Kf6
43.
Rc6
1/2-1/2
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Event
Site
Lincoln
Date
1969.08.22
Round
12
White
Chalker, Robert P
Black
Westbrock, John T
Result
1/2-1/2
[Event "US Open-70"] [Site "Lincoln"] [Date "1969.08.22"] [Round "12"] [White "Chalker, Robert P"] [Black "Westbrock, John T"] [Result "1/2-1/2"] 1. b4 a5 2. b5 Nf6 3. Bb2 d5 4. e3 Bf5 5. Nf3 e6 6. c4 Nbd7 7. d3 dxc4 8. dxc4 Bxb1 9. Rxb1 Bb4+ 10. Ke2 Qe7 11. Qc2 O-O 12. g3 Rac8 13. Bg2 Qc5 14. Rbd1 c6 15. Bd4 Qe7 16. bxc6 Rxc6 17. Ne5 Nxe5 18. Bxe5 Rcc8 19. Qb3 Nd7 20. Ba1 f6 21. Bd4 Rc7 22. Rc1 Rfc8 23. Rc2 b5 24. c5 Nxc5 25. Bxc5 Rxc5 26. Rxc5 Rxc5 27. Bh3 Kf7 28. Rd1 f5 29. a3 Bxa3 30. Kf1 Bb4 31. e4 Rc3 32. Qb1 g6 33. exf5 gxf5 34. Re1 Qd7 35. Qa2 Qd3+ 36. Kg1 Rb3 37. Bf1 Qd5 38. Rc1 Ba3 39. Rc7+ Kg6 40. Qc2 Rb2 41. Qc1 Qd4 42. Qe1 Kf6 43. Rc6 1/2-1/2