1.
d4
Nf6
2.
c4
g6
3.
g3
Bg7
4.
Bg2
O-O
5.
Nc3
d6
6.
Nf3
c5
7.
d5
a6
8.
a4
e6
9.
dxe6
Bxe6
10.
Bf4
Nc6
11.
Bxd6
Re8
12.
Bxc5
Qa5
13.
Be3
Ng4
14.
Bd2
Bxc4
15.
O-O
Qb6
16.
a5
Qc5
17.
Qc1
Rad8
18.
h3
Nge5
19.
Be3
Nxf3+
20.
Bxf3
Nd4
21.
Kg2
Qe7
22.
Bxd4
Bxd4
23.
Re1
Bb3
24.
e3
Bg7
1/2-1/2
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Event
Site
Amsterdam
Date
1963.??.??
Round
1
White
Donner, Jan Hein
Black
Udovcic, Mijo
Result
1/2-1/2
[Event "IBM"] [Site "Amsterdam"] [Date "1963.??.??"] [Round "1"] [White "Donner, Jan Hein"] [Black "Udovcic, Mijo"] [Result "1/2-1/2"] 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c5 7. d5 a6 8. a4 e6 9. dxe6 Bxe6 10. Bf4 Nc6 11. Bxd6 Re8 12. Bxc5 Qa5 13. Be3 Ng4 14. Bd2 Bxc4 15. O-O Qb6 16. a5 Qc5 17. Qc1 Rad8 18. h3 Nge5 19. Be3 Nxf3+ 20. Bxf3 Nd4 21. Kg2 Qe7 22. Bxd4 Bxd4 23. Re1 Bb3 24. e3 Bg7 1/2-1/2