1.
d4
Nf6
2.
Nf3
g6
3.
c4
Bg7
4.
g3
O-O
5.
Bg2
d6
6.
O-O
Nbd7
7.
Nc3
e5
8.
dxe5
dxe5
9.
Qc2
c6
10.
Rd1
Qe7
11.
e4
Ne8
12.
Bg5
f6
13.
Be3
f5
14.
Qd2
Nb6
15.
Bg5
Qf7
16.
b3
f4
17.
Bd8
h6
18.
h3
fxg3
19.
fxg3
Bxh3
20.
Nxe5
Bxe5
21.
Bxh3
Rxd8
0-1
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Site
Siegen
Date
1970.09.12
Round
8
White
Yabra, Frederico
Black
Result
0-1
[Event "Olympiad-19 Preliminaries A"] [Site "Siegen"] [Date "1970.09.12"] [Round "8"] [White "Yabra, Frederico"] [Black "Polugaevsky, Lev"] [Result "0-1"] 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. dxe5 dxe5 9. Qc2 c6 10. Rd1 Qe7 11. e4 Ne8 12. Bg5 f6 13. Be3 f5 14. Qd2 Nb6 15. Bg5 Qf7 16. b3 f4 17. Bd8 h6 18. h3 fxg3 19. fxg3 Bxh3 20. Nxe5 Bxe5 21. Bxh3 Rxd8 0-1