[Event "Vidmar Memorial-03"]
[Site "Portoroz/Ljubljana"]
[Date "1975.06.09"]
[Round "7"]
[White "Ribli, Zoltan"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 O-O 6. d3 Re8 7. Bd2 d6 8. Be2 Bf5 9. Ne4 Bxe4 10. dxe4 Bxd2+ 11. Nxd2 Qe7 12. O-O a5 13. b3 Nd8 14. Nb1 Ne6 15. Nc3 c6 16. Rfd1 1/2-1/2