[Event "US Open-68"]
[Site "Atlanta"]
[Date "1967.??.??"]
[Round "2"]
[White "Haffner, Donald"]
[Black "Byrne, Robert Eugene"]
[Result "0-1"]
[ECO "B32"]
[PlyCount "74"]
[EventDate "1967.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Bd3 e6 7. Be3 Qc7 8. N1d2 b6 9. c3 Ne5 10. Be2 Bb7 11. f3 Be7 12. 0-0 Ng6 13. Re1 0-0 14. Qc2 d5 15. exd5 Nxd5 16. Bf2 Rac8 17. Rad1 Rfd8 18. Ne4 f5 19. Ng3 Ndf4 20. Bf1 Bd5 21. Nd4 Bf6 22. Ba6 Rb8 23. c4 Bxd4 24. Bxd4 b5 25. b3 Rd6 26. Bxb5 Rxb5 27. Qf2 Bxc4 28. bxc4 Qxc4 29. Bxa7 Nd3 30. Qe2 Ngf4 31. Qd2 Ra6 32. Rc1 Rxa2 33. Rxc4 Rxd2 34. Be3 Rxg2+ 35. Kh1 Nxe1 36. Bxf4 Rbb2 37. Nf1 Nxf3 0-1

[Event "US Open-68"]
[Site "Atlanta"]
[Date "1967.??.??"]
[Round "12"]
[White "Haffner, Donald"]
[Black "Karklins, Andrew"]
[Result "1/2-1/2"]
[ECO "A48"]
[PlyCount "120"]
[EventDate "1967.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 0-0 5. Bd3 d6 6. 0-0 Nbd7 7. Nbd2 Re8 8. Bc4 d5 9. Bb3 c5 10. c3 b6 11. Re1 Bb7 12. Ne5 a6 13. Qe2 e6 14. h3 Qe7 15. Rac1 Rad8 16. Bg5 h6 17. Nxd7 Qxd7 18. Bxf6 Bxf6 19. f4 Qb5 20. Qd1 Qc6 21. Bc2 Qd6 22. Nf3 cxd4 23. cxd4 Rc8 24. Qd2 Rc7 25. Bd3 Rec8 26. Rxc7 Qxc7 27. Re2 Qc1+ 28. Qxc1 Rxc1+ 29. Re1 Rxe1+ 30. Nxe1 g5 31. g3 Be7 32. Kf2 a5 33. Bb5 Bc8 34. fxg5 hxg5 35. Nd3 Bf6 36. g4 Kf8 37. a4 Ke7 38. b3 Kd6 39. Ne1 e5 40. Nf3 e4 41. Nh2 Be7 42. Nf1 f5 43. Be2 f4 44. Bb5 Bf6 45. Ke2 Be6 46. Nd2 Bc8 47. Nf1 Kc7 48. Nd2 Be6 49. Nf1 Be7 50. Nd2 Kd6 51. Nf1 Kc7 52. Nd2 Bd6 53. Nf1 Bf7 54. Kf2 Bg6 55. Ke2 Ba3 56. Kf2 Kd6 57. Ke2 Bb2 58. Kd2 fxe3+ 59. Kxe3 Bc1+ 60. Nd2 Bxd2+ 1/2-1/2

[Event "US Open-68"]
[Site "Atlanta"]
[Date "1967.??.??"]
[Round "7"]
[White "Martinovsky, Eugene Simeon"]
[Black "Haffner, Donald"]
[Result "1-0"]
[ECO "D18"]
[PlyCount "85"]
[EventDate "1967.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Nbd7 8. 0-0 Bd6 9. Qe2 Ne4 10. Nd2 Nxd2 11. Bxd2 Qh4 12. g3 Qe7 13. e4 Bg6 14. f4 Nb6 15. f5 Nxc4 16. fxg6 hxg6 17. Qxc4 Rxh2 18. Bf4 Bxf4 19. Rxf4 Rxb2 20. Rb1 Qg5 21. Rxb2 Qxg3+ 22. Kh1 Qxf4 23. Rxb7 Qf3+ 24. Kg1 Qg3+ 25. Kf1 Qf3+ 26. Ke1 Qe3+ 27. Kd1 Qg1+ 28. Kc2 Qh2+ 29. Kb3 Rd8 30. Qxc6+ Kf8 31. Rxa7 Kg8 32. Qc7 Qxc7 33. Rxc7 Rxd4 34. a5 Rd6 35. e5 Ra6 36. Kb4 g5 37. Kb5 Ra8 38. Na4 g4 39. Nb6 Rd8 40. Rc4 g3 41. Rg4 Rd3 42. a6 Rb3+ 43. Ka5 1-0

