1.
Nf3
c5
2.
c4
g6
3.
d4
Bg7
4.
d5
d6
5.
e4
Nf6
6.
Nc3
O-O
7.
Be2
e5
8.
Bg5
h6
9.
Bh4
Qc7
10.
Nd2
Nh7
11.
a3
Bf6
12.
Bxf6
Nxf6
13.
h4
h5
14.
f3
Kg7
15.
Nf1
Qe7
16.
Ne3
Na6
17.
Qd2
Rb8
18.
b3
1/2-1/2
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Event
Site
Petropolis
Date
1973.07.30
Round
6
White
Black
Result
1/2-1/2
Score
[Event "Interzonal-09b"] [Site "Petropolis"] [Date "1973.07.30"] [Round "6"] [White "Ivkov, Borislav"] [Black "Panno, Oscar"] [Result "1/2-1/2"] 1. Nf3 c5 2. c4 g6 3. d4 Bg7 4. d5 d6 5. e4 Nf6 6. Nc3 O-O 7. Be2 e5 8. Bg5 h6 9. Bh4 Qc7 10. Nd2 Nh7 11. a3 Bf6 12. Bxf6 Nxf6 13. h4 h5 14. f3 Kg7 15. Nf1 Qe7 16. Ne3 Na6 17. Qd2 Rb8 18. b3 1/2-1/2