1.
e4
c5
2.
Nf3
d6
3.
d4
cxd4
4.
Nxd4
Nf6
5.
Nc3
a6
6.
Bg5
e6
7.
f4
Be7
8.
Qf3
Qc7
9.
O-O-O
Nbd7
10.
Be2
b5
11.
Bxf6
Nxf6
12.
e5
Bb7
13.
exf6
Bxf3
14.
Bxf3
Bxf6
15.
Bxa8
Bxd4
16.
Rxd4
d5
17.
Bxd5
exd5
18.
Re1+
Kf8
19.
Re5
1/2-1/2
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Event
Site
Berlin West
Date
1971.09.21
Round
4
White
Dueball, Juergen
Black
Donner, Jan Hein
Result
1/2-1/2
[Event "GER-ch52 International01"] [Site "Berlin West"] [Date "1971.09.21"] [Round "4"] [White "Dueball, Juergen"] [Black "Donner, Jan Hein"] [Result "1/2-1/2"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. Be2 b5 11. Bxf6 Nxf6 12. e5 Bb7 13. exf6 Bxf3 14. Bxf3 Bxf6 15. Bxa8 Bxd4 16. Rxd4 d5 17. Bxd5 exd5 18. Re1+ Kf8 19. Re5 1/2-1/2