[Event "HUN-ch"]
[Site "Budapest HUN"]
[Date "1971.10.17"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Lajos Portisch"]
[Black "Zoltan Ribli"]
[ECO "D97"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

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 c5 11.e6 c4 12.exf7 Rxf7 13.Qd1
Nb6 14.a4 b4 15.Ne4 a5 16.Ne5 Rf8 17.Nxc4 Nd5 18.Be2 Nxe3
19.fxe3 e5 20.Nxe5 Bb7 21.Bc4+ Kh8 22.Qg4 Bxe5 23.dxe5 Nd7
24.Nd6 Nxe5 25.Qd4 Qf6 26.Rf1 Qg7 27.Bb3 Bxg2 28.Rxf8+ Rxf8
29.O-O-O h6 30.Kb1 Kh7 31.h4 Bf3 32.Rd2 Qe7 33.Nb5 Nc6 34.Qd7
Be4+ 35.Ka2 Rf1 36.Bc2 Bxc2 37.Qxe7+ Nxe7 38.Rxc2 g5 39.hxg5
hxg5 40.Rc7 Rf7 41.Nd6 Rg7 42.Ne8 1/2-1/2