1.
c4
Nf6
2.
Nc3
e5
3.
g3
Bb4
4.
Bg2
O-O
5.
d3
Re8
6.
Bd2
c6
7.
Nf3
h6
8.
O-O
Bf8
9.
e4
d6
10.
d4
Bg4
11.
d5
cxd5
12.
cxd5
b5
13.
Re1
a6
14.
h3
Bxf3
15.
Qxf3
Nbd7
16.
Bf1
Qb8
17.
b4
Rc8
18.
a4
bxa4
19.
Rxa4
Nb6
20.
Rxa6
Nc4
21.
Bxc4
Rxc4
22.
b5
Rxa6
23.
bxa6
1-0
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Event
Site
Amsterdam
Date
1968.??.??
Round
1
White
Black
Zuidema, Coen
Result
1-0
Score
[Event "IBM"] [Site "Amsterdam"] [Date "1968.??.??"] [Round "1"] [White "Ivkov, Borislav"] [Black "Zuidema, Coen"] [Result "1-0"] 1. c4 Nf6 2. Nc3 e5 3. g3 Bb4 4. Bg2 O-O 5. d3 Re8 6. Bd2 c6 7. Nf3 h6 8. O-O Bf8 9. e4 d6 10. d4 Bg4 11. d5 cxd5 12. cxd5 b5 13. Re1 a6 14. h3 Bxf3 15. Qxf3 Nbd7 16. Bf1 Qb8 17. b4 Rc8 18. a4 bxa4 19. Rxa4 Nb6 20. Rxa6 Nc4 21. Bxc4 Rxc4 22. b5 Rxa6 23. bxa6 1-0