[Event "EUR-chT (Men) 3rd"]
[Site "Hamburg FRG"]
[Date "1965.06.09"]
[EventDate "1965.06.06"]
[Round "4"]
[Result "1/2-1/2"]
[White "Tigran Vartanovich Petrosian"]
[Black "Lajos Portisch"]
[ECO "C94"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d3 Nbd7 11. Nbd2 Bb7 12. Nf1
Nc5 13. Bc2 Re8 14. Ng3 Bf8 15. b4 Ncd7 16. Bb3 d5 17. a3 c5
18. exd5 Bxd5 19. Bg5 Qc7 20. Nd2 cxb4 21. cxb4 Rac8 22. Bxd5
Nxd5 23. Qf3 Nf4 1/2-1/2