[Event "6th ETCh final"]
[Site "Moscow URS"]
[Date "1977.??.??"]
[Round "4"]
[White "Petrosian, Tigran URS"]
[Black "Ribli, Zoltan HUN"]
[Result "1/2-1/2"]
[WhiteElo "2645"]
[BlackElo "2595"]
[ECO "A34"]
[EventDate "1977.04.13"]
[PlyCount "50"]

1.c4 c5 2.Nc3 g6 3.b3 Bg7 4.Bb2 Nc6 5.Nf3 e5 6.g3 Nge7 7.Bg2 d6 8.d3 h6 9.
O-O Be6 10.e4 O-O 11.Nh4 Nd4 12.Kh1 Nec6 13.Rb1 a6 14.Qe1 Nc2 15.Qd2 N2d4 
16.Nf3 Qa5 17.Ng1 Rae8 18.Rbd1 b5 19.Ba1 Kh7 20.Nge2 Nxe2 21.Qxe2 Nd4 22.
Qd2 Bg4 23.Rb1 Bd7 24.Rbe1 Bc6 25.Rd1 Ba8 1/2-1/2

