[Event "Milan IT"]
[Round "1"]
[Site "Milan"]
[Date "1975.08.20"]
[White "Mariotti, Sergio"]
[WhiteElo "2495"]
[Black "Portisch, Lajos"]
[BlackElo "2635"]
[Result "0-1"]
[ECO "C75"]
[Opening "Ruy Lopez, Modern Steinitz Defence"]
 1. e4   e5
 2. Nf3  Nc6
 3. Bb5  a6
 4. Ba4  d6
 5. c3   Bd7
 6. d4   Nge7
 7. Bb3  h6
 8. Nbd2 Ng6
 9. Nc4  Be7
10. Ne3  Bg5
11. Nd5  Bxc1
12. Rxc1 O-O
13. dxe5 Ncxe5
14. Nxe5 dxe5
15. h4   a5
16. g3   Ra6
17. c4   Ne7
18. c5   a4
19. Bc4  Ra5
20. Nb4  Nc6
21. Nxc6 Bxc6
22. O-O  Qe7
23. Bd5  Bxd5
24. Qxd5 Rb5
25. Rc2  Rd8
26. Qc4  Ra5
27. Qc3  Raa8
28. c6   b6
29. Rd2  Rxd2
30. Qxd2 Rd8
31. Qc2  Rd4
32. Qe2  Qe6
33. Rc1  Qxa2
34. Qa6  Qe6
35. Qa7  Qe7
36. Qa6  Kh7
37. Qc8  h5
38. Rc2  g6
39. Re2  Qd8
40. Qa6  Rd1+
41. Kg2  Qd3
0-1