[Event "1st WTCh-U26 qual. group 5"] [Site "Mexico City MEX"] [Date "1978.08.21"] [EventDate "1978.08.21"] [Round "1"] [Result "1-0"] [White "Marcel Sisniega"] [Black "Manuel Velasquez"] [ECO "E69"] [WhiteElo "2455"] [BlackElo "?"] [PlyCount "68"] 1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 d6 6.Nf3 Nbd7 7.O-O e5 8.e4 c6 9.h3 Qb6 10.Re1 Re8 11.d5 cxd5 12.cxd5 Nc5 13.Rb1 a5 14.Be3 Nfd7 15.Nd2 f5 16.exf5 gxf5 17.Nc4 Qa6 18.Nb5 Rf8 19.Ncxd6 Rf6 20.Qc2 Bf8 21.Bxc5 Nxc5 22.Qxc5 Bxd6 23.Nxd6 Rxd6 24.Rxe5 Bd7 25.Re7 Rf8 26.Rbe1 Rf7 27.Qd4 Qb6 28.Qf4 Rg6 29.Rxf7 Kxf7 30.Qh4 Qb4 31.Qxh7+ Rg7 32.Qh5+ Rg6 33.Re2 Qd4 34. Bf3 1-0