1.
d4
Nf6
2.
c4
g6
3.
Nc3
Bg7
4.
e4
d6
5.
Nf3
O-O
6.
Be2
e5
7.
O-O
c6
8.
Be3
Nbd7
9.
d5
cxd5
10.
cxd5
Ng4
11.
Bg5
f6
12.
Bd2
Nh6
13.
Qc2
a6
14.
a4
f5
15.
Ng5
Nc5
16.
a5
f4
17.
Nf3
g5
18.
b4
Nd7
19.
Na4
g4
20.
Ne1
Qg5
21.
Ra3
Nf6
22.
Rc3
Nf7
23.
Bd3
1/2-1/2
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Event
Site
Bad Aibling
Date
1968.05.04
Round
5
White
Kottnauer, Cenek
Black
Donner, Jan Hein
Result
1/2-1/2
[Event "Clare Benedict Cup-15"] [Site "Bad Aibling"] [Date "1968.05.04"] [Round "5"] [White "Kottnauer, Cenek"] [Black "Donner, Jan Hein"] [Result "1/2-1/2"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O c6 8. Be3 Nbd7 9. d5 cxd5 10. cxd5 Ng4 11. Bg5 f6 12. Bd2 Nh6 13. Qc2 a6 14. a4 f5 15. Ng5 Nc5 16. a5 f4 17. Nf3 g5 18. b4 Nd7 19. Na4 g4 20. Ne1 Qg5 21. Ra3 Nf6 22. Rc3 Nf7 23. Bd3 1/2-1/2