1.
Nf3
g6
2.
c4
Bg7
3.
g3
d6
4.
Bg2
c6
5.
O-O
Nd7
6.
Nc3
Qc7
7.
d4
e5
8.
d5
Rb8
9.
Qc2
Ne7
10.
e4
f6
11.
Rd1
g5
12.
Be3
Ng6
13.
Bxa7
Ra8
14.
Be3
Bf8
15.
Bf1
Be7
16.
Qd2
Qb8
17.
b4
Kf7
18.
Bh3
h5
19.
Be6+
Kg7
20.
c5
Ndf8
21.
Bxc8
Qxc8
22.
cxd6
Bd8
23.
dxc6
Qh3
24.
c7
h4
25.
cxd8=Q
Rxd8
26.
Qe2
hxg3
27.
fxg3
Ne6
28.
Qg2
Qg4
29.
Kf2
Rh3
30.
Ng1
Rdh8
31.
Nxh3
Rxh3
32.
Ne2
Nef4
33.
gxf4
Qh4+
34.
Kg1
Rxe3
35.
fxg5
fxg5
36.
d7
Rxe2
37.
Qxe2
Nf4
38.
Qd2
Qg4+
39.
Kh1
Qf3+
40.
Kg1
Nh3#
0-1
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Event
Site
Mendrisio
Date
1989.??.??
Round
3
White
Colombo, Eugenio
Black
Weissen, Georg
Result
0-1
Score
[Event "Mendrisio op"] [Site "Mendrisio"] [Date "1989.??.??"] [Round "3"] [White "Colombo, Eugenio"] [Black "Weissen, Georg"] [Result "0-1"] 1. Nf3 g6 2. c4 Bg7 3. g3 d6 4. Bg2 c6 5. O-O Nd7 6. Nc3 Qc7 7. d4 e5 8. d5 Rb8 9. Qc2 Ne7 10. e4 f6 11. Rd1 g5 12. Be3 Ng6 13. Bxa7 Ra8 14. Be3 Bf8 15. Bf1 Be7 16. Qd2 Qb8 17. b4 Kf7 18. Bh3 h5 19. Be6+ Kg7 20. c5 Ndf8 21. Bxc8 Qxc8 22. cxd6 Bd8 23. dxc6 Qh3 24. c7 h4 25. cxd8=Q Rxd8 26. Qe2 hxg3 27. fxg3 Ne6 28. Qg2 Qg4 29. Kf2 Rh3 30. Ng1 Rdh8 31. Nxh3 Rxh3 32. Ne2 Nef4 33. gxf4 Qh4+ 34. Kg1 Rxe3 35. fxg5 fxg5 36. d7 Rxe2 37. Qxe2 Nf4 38. Qd2 Qg4+ 39. Kh1 Qf3+ 40. Kg1 Nh3# 0-1