[Event "Palma de Mallorca"]
[Site "Palma ESP"]
[Date "1971.12.15"]
[EventDate "1971.11.29"]
[Round "13"]
[Result "1/2-1/2"]
[White "Istvan Csom"]
[Black "Lajos Portisch"]
[ECO "D27"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "27"]

1.Nf3 d5 2.d4 Nf6 3.c4 dxc4 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.dxc5
Bxc5 8.Qxd8+ Kxd8 9.a3 Ke7 10.b4 Bd6 11.Bb2 b5 12.Be2 Bb7
13.Nbd2 Nbd7 14.Rac1 1/2-1/2