[Event "Cincinnati  op"]
[Site "Cincinnati"]
[Date "1964.07.11"]
[Round "3"]
[White "Leder, Gus"]
[Black "Forsee, Pat"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "52"]
[EventDate "1964.07.11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. b4 a5 2. b5 e5 3. Bb2 d6 4. Nf3 e4 5. Nd4 c5 6. Nb3 a4 7. Nc1 f5 8. e3 Nf6 9. d4 a3 10. Nxa3 Rxa3 11. dxc5 Ra8 12. Nb3 dxc5 13. Qxd8+ Kxd8 14. Rd1+ Nbd7 15. a3 Kc7 16. Be2 Bd6 17. 0-0 b6 18. f3 Be5 19. c3 Bb7 20. Nd2 Nd5 21. Nc4 Bf6 22. fxe4 fxe4 23. Bg4 Rad8 24. Rd2 Rhe8 25. Rfd1 Ne5 26. Bf5 Nxc4 0-1

[Event "Cincinnati  op"]
[Site "Cincinnati"]
[Date "1964.07.11"]
[Round "1"]
[White "Leder, Gus"]
[Black "Underhill, Roger"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "90"]
[EventDate "1964.07.11"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. a3 Ba5 5. Nf3 Nc6 6. Bb2 d6 7. e3 0-0 8. Be2 Ne7 9. 0-0 c5 10. d4 Qb6 11. Qc1 Ne4 12. c3 d5 13. Ne5 c4 14. f3 Nd6 15. Nd2 Nef5 16. e4 Re8 17. Kh1 Ne3 18. Re1 f6 19. Ng4 Nxg4 20. fxg4 dxe4 21. Bxc4+ Kh8 22. Be2 Bd7 23. Rb1 Rac8 24. Ba1 Qc7 25. c4 e3 26. Nb3 Bxe1 27. Qxe1 Ne4 28. Na5 b6 29. Nb3 Bxg4 30. c5 Qf4 31. Bb5 Re7 32. c6 e2 33. d5 Nf2+ 34. Kg1 Nh3+ 35. gxh3 Bxh3 36. Bxe2 Qe3+ 37. Qf2 Qxe2 38. Qxe2 Rxe2 39. Nd4 Rd2 40. Bc3 Rd3 41. Rc1 Rd8 42. c7 Rxd5 43. Bb2 Rc5 44. Nb5 Rxc1+ 45. Bxc1 Rd1+ 0-1

