1.
c4
g6
2.
g3
Bg7
3.
Bg2
Nf6
4.
d4
O-O
5.
e4
d6
6.
Ne2
c5
7.
O-O
Nc6
8.
d5
Na5
9.
Nd2
a6
10.
Rb1
e6
11.
b3
b5
12.
Qc2
bxc4
13.
bxc4
exd5
14.
cxd5
Re8
15.
Nc3
Bd7
16.
h3
Qc7
17.
Bb2
Rab8
18.
Ba3
Bb5
19.
Rfe1
Nd7
20.
Nxb5
axb5
21.
Bf1
c4
22.
Bb4
Nc5
23.
Bc3
Na4
24.
Bxg7
Kxg7
25.
Nf3
Qc5
26.
Qd2
b4
27.
Qf4
Nc3
28.
Rb2
Rb7
29.
Rc2
Rbe7
30.
a3
Nxd5
31.
exd5
Rxe1
32.
Nxe1
Rxe1
33.
axb4
Qxb4
34.
Qd4+
Kg8
35.
Re2
Rxe2
36.
Bxe2
Qe1+
37.
Bf1
c3
38.
Qb4
Qa1
39.
Qg4
Nb3
40.
Kg2
Nc5
0-1
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Event
Site
Lugano
Date
1970.??.??
Round
9
White
Donner, Jan Hein
Black
Result
0-1
Score
[Event "Lugano"] [Site "Lugano"] [Date "1970.??.??"] [Round "9"] [White "Donner, Jan Hein"] [Black "Byrne, Robert Eugene"] [Result "0-1"] 1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. d4 O-O 5. e4 d6 6. Ne2 c5 7. O-O Nc6 8. d5 Na5 9. Nd2 a6 10. Rb1 e6 11. b3 b5 12. Qc2 bxc4 13. bxc4 exd5 14. cxd5 Re8 15. Nc3 Bd7 16. h3 Qc7 17. Bb2 Rab8 18. Ba3 Bb5 19. Rfe1 Nd7 20. Nxb5 axb5 21. Bf1 c4 22. Bb4 Nc5 23. Bc3 Na4 24. Bxg7 Kxg7 25. Nf3 Qc5 26. Qd2 b4 27. Qf4 Nc3 28. Rb2 Rb7 29. Rc2 Rbe7 30. a3 Nxd5 31. exd5 Rxe1 32. Nxe1 Rxe1 33. axb4 Qxb4 34. Qd4+ Kg8 35. Re2 Rxe2 36. Bxe2 Qe1+ 37. Bf1 c3 38. Qb4 Qa1 39. Qg4 Nb3 40. Kg2 Nc5 0-1