[Event "HUN-ch"]
[Site "Budapest"]
[Date "1971.??.??"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Vadasz, Laszlo"]
[Result "1/2-1/2"]
[WhiteElo "2630"]
[BlackElo "2355"]
[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.Be3 Nb6 11.a4 Be6 12.Qd1 c5 13.axb5 cxd4 14.Qxd4 axb5 15.Rxa8 Nxa8
16.Bxb5 Nc7 17.Ba4 Nba6 18.Qh4 Qb8 19.O-O Qxb2  1/2-1/2

