1.
d4
Nf6
2.
c4
c5
3.
d5
b5
4.
cxb5
e6
5.
Nc3
exd5
6.
Nxd5
Bb7
7.
e4
a6
8.
bxa6
Nxa6
9.
Bc4
Nc7
10.
Nf3
Ncxd5
11.
exd5
Qe7+
12.
Be3
Qd6
13.
Qb3
Bxd5
14.
Bxd5
Qxd5
15.
O-O
Be7
16.
Rac1
Qxb3
17.
axb3
d6
18.
Rfe1
Nd5
19.
Rcd1
Nxe3
20.
Rxe3
Kf8
21.
g3
f6
22.
b4
Kf7
23.
bxc5
dxc5
24.
Rd7
Rhe8
25.
Rb7
Ra6
26.
Nd2
Re6
27.
Ra3
Kg8
28.
Nc4
Bf8
29.
Ne3
R6e7
30.
Raa7
Rxb7
31.
Rxb7
Rd8
32.
Kf1
g6
1/2-1/2
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Event
Site
Lenzerheide
Date
1964.07.13
Round
3
White
Donner, Jan Hein
Black
Contedini, Ennio
Result
1/2-1/2
[Event "Clare Benedict Cup-11"] [Site "Lenzerheide"] [Date "1964.07.13"] [Round "3"] [White "Donner, Jan Hein"] [Black "Contedini, Ennio"] [Result "1/2-1/2"] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 e6 5. Nc3 exd5 6. Nxd5 Bb7 7. e4 a6 8. bxa6 Nxa6 9. Bc4 Nc7 10. Nf3 Ncxd5 11. exd5 Qe7+ 12. Be3 Qd6 13. Qb3 Bxd5 14. Bxd5 Qxd5 15. O-O Be7 16. Rac1 Qxb3 17. axb3 d6 18. Rfe1 Nd5 19. Rcd1 Nxe3 20. Rxe3 Kf8 21. g3 f6 22. b4 Kf7 23. bxc5 dxc5 24. Rd7 Rhe8 25. Rb7 Ra6 26. Nd2 Re6 27. Ra3 Kg8 28. Nc4 Bf8 29. Ne3 R6e7 30. Raa7 Rxb7 31. Rxb7 Rd8 32. Kf1 g6 1/2-1/2