1.
d4
Nf6
2.
c4
c5
3.
d5
b5
4.
cxb5
a6
5.
Nc3
axb5
6.
e4
Qa5
7.
Bd2
b4
8.
e5
bxc3
9.
Bxc3
Qa4
10.
Qxa4
Rxa4
11.
exf6
exf6
12.
O-O-O
Bd6
13.
Re1+
Kd8
14.
Kb1
Bb7
15.
Rd1
Na6
16.
b3
Rf4
17.
Nh3
Rf5
18.
g4
Rf3
19.
Ba5+
Bc7
20.
Be1
Nb4
21.
d6
Bxd6
22.
Rxd6
Rxh3
23.
Rg1
Rxh2
24.
Bxb4
cxb4
25.
Bb5
Be4+
26.
Kc1
Kc7
27.
Rxd7+
Kb6
28.
Bc4
Ra8
29.
Rd2
Ra7
30.
Kb2
Rh1
31.
Rxh1
Bxh1
32.
f4
Bf3
33.
g5
fxg5
34.
fxg5
Ra5
35.
Rf2
Bc6
36.
Bxf7
Rxg5
37.
a3
Rg2
38.
Rxg2
Bxg2
39.
axb4
g5
40.
Kc3
Bf3
41.
Kd4
h5
42.
Ke3
Bg4
43.
Bd5
Bf5
44.
Kd4
g4
45.
Ke5
Bc8
46.
Kf4
h4
47.
Kg5
h3
48.
Kh4
Bb7
49.
Kxg4
1/2-1/2
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Event
Site
Chicago
Date
1979.08.03
Round
6
White
Bass, Leonid
Black
Vasto, Daniel
Result
1/2-1/2
Score
[Event "US Open-80"] [Site "Chicago"] [Date "1979.08.03"] [Round "6"] [White "Bass, Leonid"] [Black "Vasto, Daniel"] [Result "1/2-1/2"] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3 axb5 6. e4 Qa5 7. Bd2 b4 8. e5 bxc3 9. Bxc3 Qa4 10. Qxa4 Rxa4 11. exf6 exf6 12. O-O-O Bd6 13. Re1+ Kd8 14. Kb1 Bb7 15. Rd1 Na6 16. b3 Rf4 17. Nh3 Rf5 18. g4 Rf3 19. Ba5+ Bc7 20. Be1 Nb4 21. d6 Bxd6 22. Rxd6 Rxh3 23. Rg1 Rxh2 24. Bxb4 cxb4 25. Bb5 Be4+ 26. Kc1 Kc7 27. Rxd7+ Kb6 28. Bc4 Ra8 29. Rd2 Ra7 30. Kb2 Rh1 31. Rxh1 Bxh1 32. f4 Bf3 33. g5 fxg5 34. fxg5 Ra5 35. Rf2 Bc6 36. Bxf7 Rxg5 37. a3 Rg2 38. Rxg2 Bxg2 39. axb4 g5 40. Kc3 Bf3 41. Kd4 h5 42. Ke3 Bg4 43. Bd5 Bf5 44. Kd4 g4 45. Ke5 Bc8 46. Kf4 h4 47. Kg5 h3 48. Kh4 Bb7 49. Kxg4 1/2-1/2