1.
e4
Nf6
2.
e5
Nd5
3.
d4
d6
4.
Nf3
Bg4
5.
Be2
e6
6.
O-O
Be7
7.
h3
Bh5
8.
c4
Nb6
9.
Nc3
O-O
10.
exd6
cxd6
11.
Be3
N6d7
12.
b3
Nf6
13.
Nd2
Bxe2
14.
Qxe2
Nbd7
15.
Rfd1
Qa5
16.
Rac1
Rfc8
17.
Nf3
d5
18.
c5
b6
19.
Bd2
Qa3
20.
Be1
Nb8
21.
b4
bxc5
22.
dxc5
a5
23.
Nb1
Qa4
24.
a3
Na6
25.
Rd4
Nc7
26.
Ne5
Nb5
27.
Rdd1
1/2-1/2
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Event
Site
Amsterdam
Date
1965.??.??
Round
1
White
Zuidema, Coen
Black
Result
1/2-1/2
[Event "IBM"] [Site "Amsterdam"] [Date "1965.??.??"] [Round "1"] [White "Zuidema, Coen"] [Black "Trifunovic, Petar"] [Result "1/2-1/2"] 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. O-O Be7 7. h3 Bh5 8. c4 Nb6 9. Nc3 O-O 10. exd6 cxd6 11. Be3 N6d7 12. b3 Nf6 13. Nd2 Bxe2 14. Qxe2 Nbd7 15. Rfd1 Qa5 16. Rac1 Rfc8 17. Nf3 d5 18. c5 b6 19. Bd2 Qa3 20. Be1 Nb8 21. b4 bxc5 22. dxc5 a5 23. Nb1 Qa4 24. a3 Na6 25. Rd4 Nc7 26. Ne5 Nb5 27. Rdd1 1/2-1/2