[Event "Milan IT"]
[Round "3"]
[Site "Milan"]
[Date "1975.08.22"]
[White "Petrosian, Tigran V"]
[WhiteElo "2645"]
[Black "Portisch, Lajos"]
[BlackElo "2635"]
[Result "1/2-1/2"]
[ECO "A07"]
[Opening "Reti Opening, King's Indian Attack (Barcza System)"]
 1. Nf3  d5
 2. g3   Bg4
 3. Bg2  Nd7
 4. O-O  Ngf6
 5. d3   e5
 6. c4   dxc4
 7. dxc4 c6
 8. Qc2  Bc5
 9. Nc3  O-O
10. h3   Bxf3
11. Bxf3 Qe7
12. Kh2  Rfe8
13. Bg5  h6
14. Bxf6 Nxf6
15. e3   e4
16. Bg2  h5
17. Rfd1 Qe6
18. Ne2  Rad8
19. Kg1  g6
20. a3   Bb6
21. b3   Qe7
22. Rxd8 Bxd8
23. Rd1  Qxa3
24. Nc3  Kg7
25. h4   Ba5
26. Nxe4 Nxe4
27. Bxe4 Rd8
1/2-1/2