1.
f4
Nf6
2.
Nf3
g6
3.
b4
Bg7
4.
Bb2
O-O
5.
e3
d6
6.
Na3
e5
7.
fxe5
Ng4
8.
Nc4
b5
9.
Na5
a6
10.
Be2
c5
11.
a3
dxe5
12.
O-O
Qc7
13.
g3
c4
14.
Qe1
h5
15.
Ng5
1/2-1/2
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Event
Site
Vrsac
Date
1969.09.07
Round
3
White
Black
Result
1/2-1/2
Score
[Event "Boris Kostic Memorial-01"] [Site "Vrsac"] [Date "1969.09.07"] [Round "3"] [White "Ivkov, Borislav"] [Black "Byrne, Donald"] [Result "1/2-1/2"] 1. f4 Nf6 2. Nf3 g6 3. b4 Bg7 4. Bb2 O-O 5. e3 d6 6. Na3 e5 7. fxe5 Ng4 8. Nc4 b5 9. Na5 a6 10. Be2 c5 11. a3 dxe5 12. O-O Qc7 13. g3 c4 14. Qe1 h5 15. Ng5 1/2-1/2