[Event "US Open-72"]
[Site "Ventura"]
[Date "1971.??.??"]
[Round "1"]
[White "Cunningham, Walter"]
[Black "Olmsted, David"]
[Result "1-0"]
[ECO "E68"]
[PlyCount "45"]
[EventDate "1971.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 g6 3. d4 Bg7 4. g3 d6 5. Bg2 Nbd7 6. 0-0 0-0 7. Nc3 c6 8. e4 e5 9. Rb1 Qc7 10. h3 exd4 11. Nxd4 Nc5 12. Bf4 Re8 13. Re1 Bd7 14. Nb3 Nxb3 15. Bxd6 Qb6 16. axb3 Be6 17. Na4 Qd8 18. Nc5 Qb6 19. Nxe6 Rxe6 20. c5 Qb4 21. Ra1 Nd7 22. Ra4 Qb5 23. Rf1 1-0

