[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.15"]
[Round "4"]
[White "Smyslov, Vassily V"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2580"]
[BlackElo "2625"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Ne4 8. Nxe4 Bxe4 9. Qa4 c5 10. Rd1 Bf6 11. dxc5 bxc5 12. Nd2 Bxg2 13. Kxg2 Qc7 14. Ne4 Bd4 15. e3 Be5 16. f3 Rc8 17. Rb1 1/2-1/2