1.
g3
d5
2.
Bg2
g6
3.
Nf3
Bg7
4.
O-O
e5
5.
d3
Ne7
6.
e4
O-O
7.
exd5
Nxd5
8.
Re1
Nc6
9.
c3
Bf5
10.
Nh4
Be6
11.
Nd2
b6
12.
Qa4
Qd7
13.
Nc4
a6
14.
Ne3
b5
15.
Qc2
Rad8
16.
a4
b4
17.
Nc4
e4
18.
dxe4
Nxc3
19.
Bf1
Nd4
20.
Qd3
Nb3
21.
Qxd7
Rxd7
22.
bxc3
Nxa1
23.
Bb2
Nc2
24.
Rc1
b3
25.
Na5
c5
26.
Nf3
Rc8
27.
Nc4
Rcd8
28.
Kg2
Bh6
0-1
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Site
Siegen
Date
1970.09.11
Round
7
White
Sumar, Julio
Black
Result
0-1
Score
[Event "Olympiad-19 Preliminaries A"] [Site "Siegen"] [Date "1970.09.11"] [Round "7"] [White "Sumar, Julio"] [Black "Korchnoi, Viktor Lvovich"] [Result "0-1"] 1. g3 d5 2. Bg2 g6 3. Nf3 Bg7 4. O-O e5 5. d3 Ne7 6. e4 O-O 7. exd5 Nxd5 8. Re1 Nc6 9. c3 Bf5 10. Nh4 Be6 11. Nd2 b6 12. Qa4 Qd7 13. Nc4 a6 14. Ne3 b5 15. Qc2 Rad8 16. a4 b4 17. Nc4 e4 18. dxe4 Nxc3 19. Bf1 Nd4 20. Qd3 Nb3 21. Qxd7 Rxd7 22. bxc3 Nxa1 23. Bb2 Nc2 24. Rc1 b3 25. Na5 c5 26. Nf3 Rc8 27. Nc4 Rcd8 28. Kg2 Bh6 0-1