[Event "Cincinnati  op"]
[Site "Cincinnati"]
[Date "1964.07.11"]
[Round "1"]
[White "Etson, Don"]
[Black "Duhlmeier, William"]
[Result "0-1"]
[ECO "C24"]
[PlyCount "78"]
[EventDate "1964.07.11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d4 Nxe4 4. Nf3 d5 5. Qe2 Bg4 6. Nbd2 Nxd2 7. Qxe5+ Be6 8. Bxd2 dxc4 9. 0-0-0 Nd7 10. Qb5 a6 11. Qxb7 Rb8 12. Qe4 Nf6 13. Qc6+ Qd7 14. Qxa6 Nd5 15. Ne5 Qb5 16. Qxb5+ Rxb5 17. Nxc4 Be7 18. a4 Rb7 19. Na5 Ra7 20. b3 0-0 21. Nc6 Ba3+ 22. Kb1 Ra6 23. Ne5 Rb8 24. Nc4 Nc3+ 25. Bxc3 Bxc4 26. Ka2 Bb4 27. Bxb4 Rxb4 28. Rhe1 Rb8 29. Ka3 Bd5 30. Re7 c6 31. f3 Be6 32. c4 Kf8 33. Rc7 Bf5 34. Rd2 Rab6 35. c5 Rxb3+ 36. Ka2 Bb1+ 37. Ka1 Ra8 38. Ra2 Bxa2 39. Kxa2 Rb4 0-1

[Event "Cincinnati  op"]
[Site "Cincinnati"]
[Date "1964.07.11"]
[Round "3"]
[White "Etson, Don"]
[Black "Trimble, Selden"]
[Result "0-1"]
[ECO "B92"]
[PlyCount "60"]
[EventDate "1964.07.11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. 0-0 b5 9. f4 Qc7 10. Bf3 Nbd7 11. Be3 Nb6 12. Bxb6 Qxb6+ 13. Kh1 Be7 14. Qd2 0-0 15. Rad1 Bc4 16. Rf2 Rfd8 17. Nc1 d5 18. exd5 Bc5 19. fxe5 Be3 20. exf6 Bxd2 21. Rfxd2 b4 22. Na4 Qxf6 23. d6 Rab8 24. Nc5 Bb5 25. d7 Bc6 26. Nxa6 Bxf3 27. Rf1 Bxg2+ 28. Kxg2 Qg5+ 29. Kh1 Qxd2 30. Nxb8 Qd5+ 0-1

