1.
d4
Nf6
2.
c4
e6
3.
Nc3
c5
4.
d5
exd5
5.
cxd5
d6
6.
g3
g6
7.
Bg2
Bg7
8.
Nf3
O-O
9.
O-O
a6
10.
a4
Nbd7
11.
Nd2
Ne8
12.
a5
b5
13.
axb6
Nxb6
14.
Nb3
Nc4
15.
Qd3
Rb8
16.
Qxc4
Rb4
17.
Qd3
Rxb3
18.
Qc2
Qb6
19.
Ra2
f5
20.
Nb1
Rb4
21.
Na3
Bd7
22.
Nc4
Qb5
23.
Na3
Qb7
24.
Nc4
Qb5
25.
Na3
1/2-1/2
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Event
Site
Birseck
Date
1971.??.??
Round
7
White
Zinser, Sylvain
Black
Ammann, Walter
Result
1/2-1/2
[Event "Birseck"] [Site "Birseck"] [Date "1971.??.??"] [Round "7"] [White "Zinser, Sylvain"] [Black "Ammann, Walter"] [Result "1/2-1/2"] 1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. g3 g6 7. Bg2 Bg7 8. Nf3 O-O 9. O-O a6 10. a4 Nbd7 11. Nd2 Ne8 12. a5 b5 13. axb6 Nxb6 14. Nb3 Nc4 15. Qd3 Rb8 16. Qxc4 Rb4 17. Qd3 Rxb3 18. Qc2 Qb6 19. Ra2 f5 20. Nb1 Rb4 21. Na3 Bd7 22. Nc4 Qb5 23. Na3 Qb7 24. Nc4 Qb5 25. Na3 1/2-1/2