[Event "Interzonal-10a playoff place 2+3"]
[Site "Varese"]
[Date "1976.10.23"]
[Round "12"]
[White "Portisch, Lajos"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]
[WhiteElo "2625"]
[BlackElo "2635"]

1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. d4 Be7 6. O-O O-O 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Nh4 Bxg2 10. Nxg2 d6 11. e4 Nc6 12. Rb1 Na5 13. b3 c5 1/2-1/2