[Event "70th US Open"]
[Site "Lincoln, NE USA"]
[Date "1969.08.20"]
[EventDate "1969.08.10"]
[Round "10"]
[Result "1/2-1/2"]
[White "Salvatore Matera"]
[Black "John Alan Grefe"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "60"]

1.e4 g6 2.d4 d6 3.Nc3 Nf6 4.f3 c6 5.Bg5 Qa5 6.Qd2 b5 7.Bd3
Nbd7 8.Nge2 Bg7 9.O-O Bb7 10.a4 b4 11.Na2 c5 12.c3 bxc3
13.bxc3 O-O 14.Rfb1 Rab8 15.Bb5 Qd8 16.Nac1 a6 17.Bd3 Qc7
18.Ng3 e5 19.d5 c4 20.Be2 a5 21.Nf1 Ba6 22.Qa2 Nb6 23.Be3 Nfd7
24.Nd2 Nc5 25.Nxc4 Nbxa4 26.Qc2 Rxb1 27.Rxb1 Rc8 28.Ra1 Bxc4
29.Bxc4 Nb6 30.Bb5 Nb7 1/2-1/2