[Event "67th US Open"] [Site "Seattle, WA USA"] [Date "1966.08.24"] [EventDate "1966.08.14"] [Round "11"] [Result "1/2-1/2"] [White "Ronald Joseph Gross"] [Black "Salvatore Matera"] [ECO "E60"] [WhiteElo "?"] [BlackElo "?"] [PlyCount "50"] 1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O Nc6 7.d5 Na5 8.Nfd2 c5 9.a3 Qc7 10.Qc2 b5 11.cxb5 a6 12.b4 Nb7 13.bxa6 Rxa6 14.Bb2 Bd7 15.Rc1 Qb6 16.Nc4 Qb5 17.e4 cxb4 18.Bf1 b3 19.Qd1 Ng4 20.h3 Nh6 21.Bxg7 Kxg7 22.Nb2 Qb6 23.Bxa6 Qxa6 24.Qxb3 Nc5 25.Qb4 Bxh3 1/2-1/2