1.
c4
g6
2.
Nc3
Bg7
3.
d4
Nf6
4.
e4
d6
5.
f3
O-O
6.
Be3
b6
7.
Bd3
e5
8.
Nge2
c5
9.
d5
Ne8
10.
Qd2
f5
11.
a3
Nd7
12.
b4
Ndf6
13.
Bg5
Qc7
14.
O-O
f4
15.
Nc1
h6
16.
Bxf6
Bxf6
17.
Nb3
Bd8
18.
Rab1
a6
19.
bxc5
bxc5
20.
Rb2
g5
21.
g4
h5
22.
h3
Nf6
23.
Be2
Ra7
24.
Kg2
Qh7
25.
Rh1
Raf7
26.
Qd3
Qg7
27.
Nd2
Ba5
28.
Rb8
Nd7
29.
Rbb1
Qf6
30.
Nd1
Rh7
31.
Nf2
Kg7
32.
Bd1
Rfh8
33.
Be2
Nf8
34.
Nb3
Bc7
35.
Qc3
Qd8
36.
Rbg1
Ng6
37.
Kf1
a5
38.
Nc1
Bd7
39.
Bd1
a4
40.
Ke2
Ba5
41.
Qb2
Qa8
42.
Qc2
Rb8
43.
Qd3
Rb2+
44.
Bc2
Qh8
45.
Nd1
Rxc2+
46.
Qxc2
hxg4
47.
fxg4
Rxh3
48.
Nf2
Re3+
49.
Kd1
Qb8
50.
Rh3
Nh4
51.
Rxe3
fxe3
52.
Nfd3
Nf3
53.
Rg3
Nd4
54.
Qa2
Bd2
0-1
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Event
Site
Caracas
Date
1970.06.20
Round
1
White
Yepez Obando, Olavo
Black
Result
0-1
Score
[Event "Caracas"] [Site "Caracas"] [Date "1970.06.20"] [Round "1"] [White "Yepez Obando, Olavo"] [Black "Stein, Leonid"] [Result "0-1"] 1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. f3 O-O 6. Be3 b6 7. Bd3 e5 8. Nge2 c5 9. d5 Ne8 10. Qd2 f5 11. a3 Nd7 12. b4 Ndf6 13. Bg5 Qc7 14. O-O f4 15. Nc1 h6 16. Bxf6 Bxf6 17. Nb3 Bd8 18. Rab1 a6 19. bxc5 bxc5 20. Rb2 g5 21. g4 h5 22. h3 Nf6 23. Be2 Ra7 24. Kg2 Qh7 25. Rh1 Raf7 26. Qd3 Qg7 27. Nd2 Ba5 28. Rb8 Nd7 29. Rbb1 Qf6 30. Nd1 Rh7 31. Nf2 Kg7 32. Bd1 Rfh8 33. Be2 Nf8 34. Nb3 Bc7 35. Qc3 Qd8 36. Rbg1 Ng6 37. Kf1 a5 38. Nc1 Bd7 39. Bd1 a4 40. Ke2 Ba5 41. Qb2 Qa8 42. Qc2 Rb8 43. Qd3 Rb2+ 44. Bc2 Qh8 45. Nd1 Rxc2+ 46. Qxc2 hxg4 47. fxg4 Rxh3 48. Nf2 Re3+ 49. Kd1 Qb8 50. Rh3 Nh4 51. Rxe3 fxe3 52. Nfd3 Nf3 53. Rg3 Nd4 54. Qa2 Bd2 0-1