[Event "Cincinnati  op"]
[Site "Cincinnati"]
[Date "1964.07.11"]
[Round "1"]
[White "Petrison, John"]
[Black "Ernst, Richard"]
[Result "1-0"]
[ECO "A09"]
[PlyCount "41"]
[EventDate "1964.07.11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. Na3 Nf6 5. Nb5 dxe3 6. fxe3 e5 7. Be2 Bf5 8. 0-0 Bg6 9. a3 a6 10. Nc3 Qd7 11. b4 e4 12. b5 exf3 13. bxc6 Qxc6 14. Bxf3 Qxc4 15. Bxb7 Rb8 16. Rf4 Qe6 17. Qa4+ Nd7 18. Bd5 Qd6 19. Rd4 Qe7 20. Be4 c5 21. Rxd7 1-0

