[Event "USA op"]
[Site "Chicago"]
[Date "1973.??.??"]
[Round "10"]
[White "Browne, Walter S"]
[Black "Chellstorp, Craig V"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "C99"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4 Nc6 14.Nb3 a5 15.Be3 a4
16.Nbd2 Be6 17.a3 Na5 18.Rc1 Qb8 19.Ng5 Bc8 20.f4 Nd7 21.Ngf3 Bf6 22.Bd3 Ba6
23.Kh1 Qb7 24.Qe2 Rfc8 25.Kh2 Nc4 26.Rb1 Nxe3  1/2-1/2

