[Event "Amsterdam Interzonal"]
[Site "Amsterdam"]
[Date "1964.??.??"]
[Round "19"]
[White "Darga, Klaus"]
[Black "Portisch, Lajos"]
[Result "1-0"]
[WhiteElo ""]
[BlackElo ""]
[ECO "D32"]

1.Nf3 Nf6 2.c4 e6 3.d4 c5 4.e3 d5 5.Nc3 a6 6.cxd5 exd5 7.Be2 Nc6 8.O-O c4
9.Ne5 Qc7 10.Nxc6 Qxc6 11.e4 Nxe4 12.Nxe4 dxe4 13.d5 Qg6 14.Re1 Bf5 15.Bh5 Qf6
16.f3 Bc5+ 17.Kh1 Qe5 18.fxe4 Bg6 19.Bf3 O-O 20.g3 b5 21.Qe2 f6 22.Bf4 Qe8
23.Rac1 Bd4 24.b3 cxb3 25.axb3 Be5 26.Rc6 Qb8 27.Qe3 Re8 28.d6 Qa7 29.Qxa7 Rxa7
30.Rc7 Raa8 31.Bxe5 fxe5 32.d7 Rf8 33.Bg4 Rad8 34.Rc8 a5 35.Kg1  1-0

