[Event "IBM"]
[Site "Amsterdam"]
[Date "1971.??.??"]
[Round "15"]
[White "Portisch, Lajos"]
[Black "Adorjan, Andras"]
[Result "0-1"]
[WhiteElo "2630"]
[BlackElo "2465"]
[ECO "D97"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 a6 8.Qb3 b5
9.e5 Nfd7 10.e6 fxe6 11.Qxe6+ Kh8 12.Qe4 Nb6 13.Be2 Bf5 14.Qh4 Nc6 15.Bh6 e5
16.Ng5 Bxh6 17.Qxh6 Qe7 18.dxe5 Nd4 19.Rd1 c5 20.Rd2 b4 21.Nd1 Nd5 22.Bc4 Nf4
23.Nf7+ Rxf7 24.Qxf4 Be6 25.Qe4 Raf8 26.Ne3 Rf4 27.Qd3 Bxc4 28.Nxc4 Qg5 29.Qg3 Rg4
30.Qe3 Rxg2 31.Qxg5 Rxg5 32.Kd1 Rg2 33.Re1 Kg7 34.Nd6 Nf3 35.e6 Nxe1 36.e7 Nf3
37.exf8=Q+ Kxf8 38.Rd3 Rg1+ 39.Ke2 Nd4+ 40.Kd2 Rb1 41.Nc4 Rf1 42.Ke3 Ke7
43.Nd2 Re1+ 44.Kf4 Re2 45.Kg3 Kd6 46.Kg2 Kd5 47.Kf1 Re7 48.b3 Kc6 49.Nc4 Re6
50.h3 Kb5 51.Rd2 h6 52.Ne3 Kc6 53.Nc4 Kb5 54.Nb2 a5 55.Na4 Re5 56.Rd3 Re4
57.Re3 Rxe3 58.fxe3 Nxb3 59.axb3 c4  0-1

