[Event "WchT U26 02 fin-B"]
[Site "Mexico City"]
[Date "1980.??.??"]
[Round "4"]
[White "Cabrera Herrera, Mario"]
[Black "Velasquez, Oscar"]
[Result "0-1"]
[WhiteElo "0"]
[BlackElo "0"]
[ECO "A24"]
[PlyCount "80"]

1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 e5 5.d3 O-O 6.Nf3 d6 7.O-O c6 8.Bg5 Nbd7 9.Qd2 Re8 10.Rac1 a5 11.b3 Nc5 12.Rfd1 Qb6 13.Be3 Qc7 14.d4 Ncd7 15.d5 c5 16.h3 Nf8 17.Nh4 Nh5 18.Kh2 f5 19.f3 Qe7 20.Bg5 Bf6 21.Bxf6 Qxf6 22.Qe1 Ng7 23.Bh1 g5 24.Ng2 b6 25.Qf2 Ra7 26.e4 Rf7 27.Rf1 Qh6 28.h4 Ng6 29.Kg1 gxh4 30.Nxh4 Nxh4 31.gxh4 Nh5 32.Rfd1 Kh8 33.Kf1 Rg8 34.Ke1 Rfg7 35.Ne2 Ng3 36.Nxg3 Rxg3 37.Ke2 Qxh4 38.Rg1 f4 39.Bg2 Qh2 40.Kf1 Rxg2 0-1