[Event "Vidmar mem"]
[Site "Ljubljana/Portoroz"]
[Date "1973.??.??"]
[Round "7"]
[White "Ivkov, Borislav"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "C19"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3 Ne7 8.a4 b6
9.Bb5+ Bd7 10.Bd3 Nbc6 11.O-O h6 12.Re1 O-O 13.Be3 cxd4 14.cxd4 Nb4 15.Qd2 Nxd3
16.cxd3  1/2-1/2

