[Event "US Open-63"]
[Site "San Antonio"]
[Date "1962.09.15"]
[Round "3"]
[White "O'Keefe, Jack"]
[Black "Orenstein, Jehiel"]
[Result "1-0"]
[ECO "E14"]
[PlyCount "53"]
[EventDate "1962.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. e3 c5 5. d4 Nbd7 6. Bd3 Be7 7. 0-0 0-0 8. b3 b6 9. Bb2 Bb7 10. Qe2 Re8 11. Rad1 cxd4 12. exd4 Bf8 13. Ne5 Nxe5 14. dxe5 Nd7 15. Bb1 dxc4 16. bxc4 g6 17. Be4 Bxe4 18. Nxe4 Bg7 19. Nf6+ Bxf6 20. exf6 e5 21. Rd6 Re6 22. Rfd1 Rxd6 23. Rxd6 Qe8 24. Qd2 Rd8 25. Ba3 a6 26. Rd5 b5 27. Be7 1-0

[Event "US Open-63"]
[Site "San Antonio"]
[Date "1962.08.25"]
[Round "12"]
[White "O'Keefe, Jack"]
[Black "Davila, Edmundo"]
[Result "1/2-1/2"]
[ECO "E69"]
[PlyCount "78"]
[EventDate "1962.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. c4 d6 6. d4 Nbd7 7. Nc3 e5 8. h3 c6 9. e4 Qb6 10. Rb1 Re8 11. Be3 Qc7 12. Qc2 Nf8 13. Rfd1 Be6 14. b3 Rad8 15. Rbc1 Bc8 16. Qb2 N6d7 17. Qa3 a6 18. Na4 exd4 19. Nxd4 Nf6 20. Nc3 Ne6 21. Nxe6 Bxe6 22. Bf4 c5 23. Qb2 Nh5 24. Bg5 Bf6 25. Bxf6 Nxf6 26. Rd3 Qe7 27. Rcd1 Rd7 28. Qd2 Red8 29. f4 Ne8 30. g4 f6 31. Na4 b5 32. Nb6 Rb7 33. Nd5 Bxd5 34. Rxd5 bxc4 35. bxc4 Rdb8 36. Qc3 Rb1 37. e5 fxe5 38. fxe5 Rxd1+ 39. Rxd1 Qxe5 1/2-1/2

[Event "US Open-63"]
[Site "San Antonio"]
[Date "1962.08.24"]
[Round "11"]
[White "Marchand, Erich Watkinson"]
[Black "O'Keefe, Jack"]
[Result "0-1"]
[ECO "A34"]
[PlyCount "104"]
[EventDate "1962.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 g6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 c5 7. 0-0 Nxc3 8. bxc3 Nc6 9. Ba3 Qa5 10. Qc1 0-0 11. Rb1 b6 12. Nd4 cxd4 13. Bxc6 Bh3 14. Bxe7 Bxf1 15. Bxa8 Rxa8 16. Qxf1 dxc3 17. dxc3 Qxa2 18. Qe1 Re8 19. Ra1 Qe6 20. Bg5 Qxe2 21. Qxe2 Rxe2 22. Rxa7 Bxc3 23. Bh6 Re8 24. Rb7 Bd4 25. Be3 Bxe3 26. fxe3 Re6 27. e4 Kg7 28. Kg2 Kf6 29. Kf3 h5 30. h4 Ke5 31. Ke3 f5 32. exf5 Kxf5+ 33. Kf3 Rd6 34. Rf7+ Ke5 35. Ke3 Kd5 36. Rf4 Kc5 37. g4 hxg4 38. Rxg4 b5 39. Rg5+ Kc4 40. h5 gxh5 41. Rxh5 b4 42. Rh8 Kc3 43. Rc8+ Kb2 44. Rb8 b3 45. Ra8 Kc2 46. Rc8+ Kb1 47. Rb8 b2 48. Ra8 Kc1 49. Rc8+ Kd1 50. Rb8 Rd2 51. Rb7 Kc1 52. Rb8 Rc2 0-1

[Event "US Open-63"]
[Site "San Antonio"]
[Date "1962.08.23"]
[Round "10"]
[White "Cunningham, Walter"]
[Black "O'Keefe, Jack"]
[Result "0-1"]
[ECO "B35"]
[PlyCount "54"]
[EventDate "1962.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 Ng4 9. Qxg4 Nxd4 10. Qd1 Nxb3 11. axb3 b6 12. Bd4 e5 13. Be3 Bb7 14. 0-0 f5 15. f3 fxe4 16. fxe4 Rxf1+ 17. Qxf1 Qh4 18. Qd3 Qg4 19. Nd5 Kh8 20. c4 Bxd5 21. cxd5 Bf8 22. Bxb6 Rb8 23. Bxa7 Ra8 24. Ra4 Rxa7 25. Qc3 Rxa4 26. Qxe5+ Kg8 27. bxa4 Bc5+ 0-1

[Event "US Open-63"]
[Site "San Antonio"]
[Date "1962.08.22"]
[Round "9"]
[White "O'Keefe, Jack"]
[Black "Zuckerman, Bernard"]
[Result "1/2-1/2"]
[ECO "E62"]
[PlyCount "107"]
[EventDate "1962.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. c4 d6 6. Nc3 Nc6 7. d4 e5 8. dxe5 dxe5 9. Qxd8 Rxd8 10. Bg5 Be6 11. Nd2 h6 12. Bxf6 Bxf6 13. Nde4 Be7 14. Nd5 Rac8 15. Nxe7+ Nxe7 16. b3 b6 17. Rfd1 f5 18. Nc3 c6 19. h4 Kf7 20. e4 Rd4 21. exf5 gxf5 22. Ne2 Rxd1+ 23. Rxd1 b5 24. c5 Bd5 25. Nc3 e4 26. Ne2 a5 27. Rd2 b4 28. Nf4 a4 29. Rd4 axb3 30. axb3 Rb8 31. Nxd5 Nxd5 32. g4 Rb5 33. gxf5 Rxc5 34. Bxe4 Kf6 35. Bxd5 Rxd5 36. Rxb4 Kxf5 37. Rc4 Rd3 38. Rxc6 Rxb3 39. Rxh6 Kg4 40. Kg2 Rb2 41. Rh8 Ra2 42. h5 Ra5 43. h6 Kh5 44. Kg3 Kg6 45. f4 Kh5 46. h7 Kh6 47. Kg4 Kg7 48. Rb8 Kxh7 49. f5 Kg7 50. Kg5 Ra6 51. Rb7+ Kg8 52. f6 Ra1 53. Rb8+ Kf7 54. Rb7+ 1/2-1/2

[Event "US Open-63"]
[Site "San Antonio"]
[Date "1962.08.20"]
[Round "7"]
[White "O'Keefe, Jack"]
[Black "Saltzberg, Mitchell"]
[Result "1-0"]
[ECO "A25"]
[PlyCount "89"]
[EventDate "1962.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 Bc5 5. e3 d6 6. Nge2 0-0 7. 0-0 Re8 8. d4 exd4 9. exd4 Bb6 10. Be3 a6 11. h3 Bf5 12. Nf4 h6 13. Nfd5 Nxd5 14. Nxd5 Ba7 15. Qd2 Rb8 16. Rae1 Ne7 17. Nxe7+ Rxe7 18. Bf4 Rxe1 19. Rxe1 Qf6 20. Be3 c6 21. Kh2 Re8 22. Bg5 hxg5 23. Rxe8+ Kh7 24. Be4 g6 25. Bxf5 gxf5 26. Qe2 Kh6 27. d5 cxd5 28. cxd5 Qd4 29. Qe3 Qa4 30. Rh8+ Kg7 31. Qe8 Qxe8 32. Rxe8 Bxf2 33. Kg2 Bd4 34. b3 a5 35. Kf3 Kg6 36. h4 g4+ 37. Kf4 Bb2 38. Ke3 Bc1+ 39. Kf2 Bh6 40. Rd8 f4 41. Rxd6+ f6 42. Rb6 f3 43. Rxb7 Bf8 44. Rb5 Bd6 45. Rxa5 1-0

[Event "US Open-63"]
[Site "San Antonio"]
[Date "1962.08.16"]
[Round "4"]
[White "Bisguier, Arthur Bernard"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "B35"]
[PlyCount "70"]
[EventDate "1962.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8. 0-0 d6 9. Nb3 Qc7 10. Be2 Be6 11. f4 a6 12. f5 Bd7 13. g4 gxf5 14. exf5 h6 15. Rf4 Ne5 16. Nd4 Bc6 17. a4 Nfd7 18. Ra3 Bf6 19. Nxc6 bxc6 20. Ne4 Bg7 21. Qf1 Nf6 22. Bc1 Nxe4 23. Rxe4 Bf6 24. Rh3 Bg7 25. Kh1 a5 26. Ree3 Rb8 27. Rb3 Rxb3 28. Rxb3 Kd7 29. Qh3 Bf6 30. Ba6 Rb8 31. Be2 Rxb3 32. Qxb3 Bg5 33. Bxg5 hxg5 34. Kg2 Qa7 35. Qc3 Qb6 1/2-1/2

[Event "US Open-63"]
[Site "San Antonio"]
[Date "1962.08.14"]
[Round "2"]
[White "Slater, Kathryn"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "D04"]
[PlyCount "81"]
[EventDate "1962.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 d5 5. Nbd2 Nbd7 6. 0-0 c5 7. c3 0-0 8. e4 dxe4 9. Nxe4 cxd4 10. Nxf6+ Nxf6 11. Nxd4 e5 12. Nb3 Qc7 13. h3 Rd8 14. Qe2 Be6 15. Bg5 h6 16. Bh4 Rdc8 17. Bxf6 Bxf6 18. Qf3 Kg7 19. Be4 Rab8 20. Rfd1 Rd8 21. Rxd8 Bxd8 22. Rd1 Be7 23. Bd5 Bxd5 24. Rxd5 Rd8 25. Qd3 b6 26. Rxd8 Qxd8 27. Qxd8 Bxd8 28. Kf1 Kf6 29. Ke2 Ke6 30. Kd3 b5 31. f3 Kd5 32. Nd2 f5 33. b3 a6 34. g4 Bg5 35. gxf5 gxf5 36. Nf1 e4+ 37. fxe4+ fxe4+ 38. Ke2 a5 39. Ne3+ Kc5 40. Nc2 a4 41. Ne3 1/2-1/2

[Event "US Open-61"]
[Site "Saint Louis"]
[Date "1960.08.18"]
[Round "11"]
[White "Donovan, Jeremiah"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "D93"]
[PlyCount "87"]
[EventDate "1960.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d5 5. Bf4 0-0 6. e3 c5 7. Be2 Qa5 8. 0-0 dxc4 9. Bxc4 cxd4 10. Nb5 Nd5 11. Bg3 Nc6 12. Nfxd4 Nxd4 13. Nxd4 Nb6 14. Bb3 e5 15. Nf3 Bd7 16. Qd6 Rfd8 17. Rfd1 Nc8 18. Qd2 Qxd2 19. Rxd2 Nb6 20. Rad1 Rdc8 21. Bxe5 Ba4 22. Bxa4 Nxa4 23. Bxg7 Kxg7 24. g3 Rc7 25. Kg2 Rac8 26. b3 Nc3 27. Rc1 Ne4 28. Rxc7 Rxc7 29. Rd4 f5 30. Nd2 Nf6 31. h4 Rc2 32. a4 Ng4 33. Kf3 Kf6 34. Ke2 Rb2 35. Rd7 b6 36. Rxa7 Nxf2 37. Kxf2 Rxd2+ 38. Kf3 Rb2 39. Rxh7 Rxb3 40. Rb7 Rb4 41. Rb8 g5 42. Rf8+ Kg7 43. Rxf5 gxh4 44. Rf4 1-0

[Event "US Open-61"]
[Site "Saint Louis"]
[Date "1960.08.17"]
[Round "10"]
[White "O'Keefe, Jack"]
[Black "Sherwin, James T"]
[Result "0-1"]
[ECO "E70"]
[PlyCount "54"]
[EventDate "1960.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bg5 h6 6. Bh4 c5 7. d5 Qa5 8. Bd3 a6 9. a4 Nbd7 10. Nge2 g5 11. Bg3 Nh5 12. Qd2 Ne5 13. 0-0 Bd7 14. Ra3 e6 15. f4 gxf4 16. Bxf4 Nxf4 17. Nxf4 h5 18. Be2 0-0-0 19. dxe6 Bxe6 20. Nfd5 Ng4 21. Kh1 Rde8 22. Qd1 Qd8 23. h3 Bd4 24. Qe1 Kb8 25. Bf3 Qg5 26. Qc1 Nf2+ 27. Kh2 Be5+ 0-1

[Event "US Open-61"]
[Site "Saint Louis"]
[Date "1960.08.15"]
[Round "8"]
[White "O'Keefe, Jack"]
[Black "Kause, Richard"]
[Result "1-0"]
[ECO "E70"]
[PlyCount "69"]
[EventDate "1960.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Bg5 h6 6. Bh4 0-0 7. Bd3 c5 8. d5 e6 9. Nge2 exd5 10. exd5 Nbd7 11. f4 Re8 12. 0-0 a6 13. Qd2 Rb8 14. a4 Qa5 15. h3 Qb4 16. Qc2 Nh7 17. Be1 Qb6 18. a5 Qc7 19. Ne4 Ndf6 20. Nxf6+ Nxf6 21. Bc3 b5 22. axb6 Qxb6 23. Ng3 Qb3 24. Bxg6 fxg6 25. Qxg6 Rf8 26. Ne4 Ne8 27. f5 Bxf5 28. Rxf5 Rxf5 29. Qxf5 Bxc3 30. Qe6+ Kh7 31. bxc3 Qc2 32. Qf5+ Kh8 33. Qf8+ Kh7 34. Rf1 Ng7 35. Nf6+ 1-0

[Event "US Open-61"]
[Site "Saint Louis"]
[Date "1960.08.12"]
[Round "5"]
[White "O'Keefe, Jack"]
[Black "Hartleb, Glenn E"]
[Result "1-0"]
[ECO "A22"]
[PlyCount "35"]
[EventDate "1960.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. d3 Be7 7. Nh3 0-0 8. 0-0 Nc6 9. f4 f5 10. a4 Be6 11. fxe5 Nxe5 12. Bxb7 Rb8 13. Bg2 Qd4+ 14. Kh1 Ng4 15. e3 Nxe3 16. Bxe3 Qxe3 17. a5 Nd7 18. Re1 1-0

[Event "US Open-61"]
[Site "Saint Louis"]
[Date "1960.08.11"]
[Round "4"]
[White "Ohman, Howard"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "A03"]
[PlyCount "61"]
[EventDate "1960.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 g6 3. Nc3 d5 4. e3 Bg7 5. Be2 0-0 6. 0-0 c5 7. d4 b6 8. Ne5 Ba6 9. dxc5 bxc5 10. Bxa6 Nxa6 11. Nc6 Qc7 12. Nxd5 Nxd5 13. Qxd5 Nb4 14. Nxb4 cxb4 15. Qb3 a5 16. Rf2 Rfd8 17. Rd2 Rd6 18. Rxd6 Qxd6 19. Qd3 Rd8 20. Kf2 Qxd3 21. cxd3 Rxd3 22. Ke2 Rd8 23. Rb1 f5 24. Bd2 Kf7 25. a3 Ke6 26. axb4 axb4 27. Bxb4 Rb8 28. Ba3 Rb3 29. Rd1 Bxb2 30. Rb1 Rxa3 31. Rxb2 1/2-1/2

[Event "US Open-61"]
[Site "Saint Louis"]
[Date "1960.08.10"]
[Round "3"]
[White "O'Keefe, Jack"]
[Black "Bisguier, Arthur Bernard"]
[Result "0-1"]
[ECO "C28"]
[PlyCount "72"]
[EventDate "1960.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Be3 Bb4 6. Nge2 d5 7. exd5 Nxd5 8. Bd2 Nb6 9. Bb5 Bd7 10. Ne4 Bxd2+ 11. Qxd2 a6 12. Bxc6 Bxc6 13. 0-0-0 f5 14. N4c3 Qf6 15. f4 0-0-0 16. fxe5 Qxe5 17. Nf4 g5 18. Nh5 h6 19. Rde1 Qc5 20. Rhf1 Qd6 21. Ng3 Nc4 22. Qf2 Nxb2 23. Kxb2 Qb4+ 24. Kc1 Qxc3 25. Qxf5+ Kb8 26. Ne4 Qa3+ 27. Kd2 Rd5 28. Qf6 Rhd8 29. Qc3 Qxa2 30. Nc5 R5d6 31. Rf5 Bxg2 32. Ra1 Qg8 33. Qb4 Ka7 34. Na4 Qg6 35. Qc5+ Kb8 36. Qf2 Be4 0-1

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.08.01"]
[Round "12"]
[White "O'Keefe, Jack"]
[Black "Marchand, Erich Watkinson"]
[Result "1/2-1/2"]
[ECO "D31"]
[PlyCount "72"]
[EventDate "1959.07.20"]
[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 e6 3. cxd5 exd5 4. Nc3 c6 5. Nf3 Bf5 6. Bg5 Be7 7. Bxe7 Qxe7 8. e3 Nd7 9. Bd3 Nh6 10. Qc2 Bxd3 11. Qxd3 0-0 12. 0-0 f5 13. Rab1 Rae8 14. b4 a6 15. Na4 Nf6 16. Nc5 Ne4 17. Ne5 Ng4 18. Nxg4 fxg4 19. a4 Rf6 20. Nxe4 dxe4 21. Qe2 Rg6 22. g3 h5 23. b5 axb5 24. axb5 h4 25. bxc6 bxc6 26. Rb6 Qg5 27. Qc4+ Kh7 28. Rxc6 h3 29. Qc5 Qh6 30. Qf5 Qg5 31. Qxg6+ Qxg6 32. Rxg6 Kxg6 33. Rc1 Ra8 34. Kf1 Kf6 35. Rc6+ Kf7 36. Rc5 Kf6 1/2-1/2

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.31"]
[Round "11"]
[White "Kause, Richard"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "B68"]
[PlyCount "64"]
[EventDate "1959.07.20"]
[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 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 Be7 10. Nf3 b5 11. Bd3 b4 12. Ne2 a5 13. e5 dxe5 14. fxe5 Nd5 15. Bxe7 Ncxe7 16. Qg5 Ng6 17. Qg3 Qb6 18. h4 a4 19. h5 b3 20. cxb3 axb3 21. a3 Qc5+ 22. Kb1 Rxa3 23. bxa3 Qxa3 24. Rd2 0-0 25. Nfd4 Ra8 26. Nxb3 Qxb3+ 27. Rb2 Qa3 28. Kc1 Nc3 29. Nxc3 Qxc3+ 30. Kb1 Qa3 31. Kc1 Qc3+ 32. Kb1 Qa3 1/2-1/2

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.29"]
[Round "9"]
[White "O'Keefe, Jack"]
[Black "Jimenez Zerquera, Eleazar"]
[Result "1/2-1/2"]
[ECO "E60"]
[PlyCount "57"]
[EventDate "1959.07.20"]
[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. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nbd7 7. Qc2 c5 8. b3 a6 9. Bb2 cxd4 10. Nxd4 e5 11. Nf3 Nc5 12. Nc3 Bf5 13. Qd2 Qb6 14. Rad1 Rad8 15. Ne1 Nce4 16. Nxe4 Bxe4 17. Bxe4 Nxe4 18. Qd3 f5 19. Nc2 d5 20. cxd5 Nxf2 21. Rxf2 e4 22. Bd4 exd3 23. Bxb6 dxc2 24. Rc1 Rxd5 25. Rxc2 Re8 26. e3 Re6 27. Rc8+ Kf7 28. Rc7+ Re7 29. Kg2 1/2-1/2

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.27"]
[Round "7"]
[White "O'Keefe, Jack"]
[Black "McCormick, Edgar Thomas"]
[Result "0-1"]
[ECO "A29"]
[PlyCount "68"]
[EventDate "1959.07.20"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Be6 6. Nf3 Nc6 7. 0-0 Be7 8. d4 exd4 9. Nb5 Qd7 10. Nbxd4 Nxd4 11. Nxd4 Bh3 12. Bxh3 Qxh3 13. Nb5 0-0-0 14. Nxa7+ Kb8 15. Qa4 h5 16. Nb5 Bc5 17. Qh4 Qe6 18. e4 Ne7 19. Bf4 Rd7 20. Rad1 Bb6 21. Rxd7 Qxd7 22. Nc3 f6 23. Rd1 Qe6 24. Kg2 g5 25. Bxg5 fxg5 26. Qxg5 h4 27. Rd3 Qc4 28. Qd2 Nc6 29. b3 Qe6 30. Qg5 Bd4 31. Qf5 Qh6 32. Qf4 Qg7 33. Nd1 Be5 34. Qf5 Nd4 0-1

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.24"]
[Round "5"]
[White "O'Keefe, Jack"]
[Black "Ramirez, Gilbert"]
[Result "0-1"]
[ECO "E70"]
[PlyCount "50"]
[EventDate "1959.07.20"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. Bg5 c5 6. d5 h6 7. Bh4 0-0 8. f4 Qa5 9. Qd2 a6 10. Nf3 e6 11. dxe6 Bxe6 12. Bd3 Qb4 13. a3 Qb3 14. Bc2 Qxb2 15. Rb1 Qxa3 16. Rxb7 Ng4 17. Na4 Nc6 18. Bf2 Rab8 19. Rxb8 Rxb8 20. 0-0 Bxc4 21. Qxd6 Bxf1 22. Qxc6 Bb5 23. Qd6 Qc1+ 24. Bd1 Bxa4 25. Qxb8+ Kh7 0-1

[Event "US Open-60"]
[Site "Omaha"]
[Date "1959.07.23"]
[Round "4"]
[White "Herbst, Henry"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "B23"]
[PlyCount "51"]
[EventDate "1959.07.20"]
[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. Nc3 Nc6 3. d3 g6 4. Be3 d6 5. Nf3 Bg7 6. Qd2 Rb8 7. d4 cxd4 8. Nxd4 Nf6 9. Be2 0-0 10. f3 d5 11. 0-0-0 dxe4 12. Kb1 Nxd4 13. Bxd4 exf3 14. Bxf3 Qa5 15. Nd5 Qxd2 16. Nxe7+ Kh8 17. Rxd2 Be6 18. Rhd1 Ng8 19. Bc5 b6 20. Bd6 Nxe7 21. Bxe7 Rg8 22. Rd6 Be5 23. R6d2 Rge8 24. Bd6 Bxd6 25. Rxd6 Kg7 26. b3 1/2-1/2

[Event "US Open-59"]
[Site "Rochester"]
[Date "1958.08.12"]
[Round "9"]
[White "Madlener, Gelli"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "E72"]
[PlyCount "49"]
[EventDate "1958.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. e4 d6 6. Nge2 c5 7. d4 Nc6 8. 0-0 Ng4 9. d5 Na5 10. b3 a6 11. h3 Nf6 12. Bb2 Bd7 13. Qc2 b5 14. cxb5 axb5 15. Nd1 Qb6 16. Ne3 b4 17. Rfd1 Ra6 18. Nf4 Rfa8 19. e5 Ne8 20. e6 Bb5 21. exf7+ Kxf7 22. Be4 c4 23. Bxg6+ hxg6 24. Qxg6+ Kg8 25. Bxg7 1-0

[Event "US Open-59"]
[Site "Rochester"]
[Date "1958.08.10"]
[Round "7"]
[White "Shaw, Jack F"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "E87"]
[PlyCount "53"]
[EventDate "1958.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 e5 6. d5 Nh5 7. Be3 f5 8. Qc2 0-0 9. 0-0-0 a6 10. Kb1 Nd7 11. exf5 gxf5 12. Bd3 Nc5 13. Bxc5 dxc5 14. g4 e4 15. fxe4 Bxc3 16. gxh5 Bg7 17. exf5 Qg5 18. Rf1 Rf6 19. Qe2 Bd7 20. Nh3 Qh4 21. Nf4 Rb6 22. Rhg1 Re8 23. Ne6 Qf6 24. Rf2 Kh8 25. Rxg7 Bxe6 26. Rxh7+ Kg8 27. fxe6 1-0

[Event "US Open-59"]
[Site "Rochester"]
[Date "1958.08.07"]
[Round "4"]
[White "O'Keefe, Jack"]
[Black "Morrell, Phil W"]
[Result "1-0"]
[ECO "C29"]
[PlyCount "61"]
[EventDate "1958.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Qh4+ 6. g3 Nxg3 7. Nf3 Qh5 8. Nxd5 Bg4 9. Bg2 Bxf3 10. Qxf3 Qxe5+ 11. Qe3 Qxe3+ 12. Bxe3 c6 13. Nc7+ Kd7 14. Nxa8 Nxh1 15. Bxa7 Bb4+ 16. c3 Re8+ 17. Kf1 Ba5 18. Bxh1 b5 19. a4 b4 20. Bb6 Bxb6 21. Nxb6+ Kc7 22. a5 bxc3 23. bxc3 Re3 24. Be4 Na6 25. Re1 Rxe1+ 26. Kxe1 g6 27. d4 c5 28. Bd3 Kb7 29. Bxa6+ Kxa6 30. Nc4 Kb5 31. d5 1-0

[Event "US Open-59"]
[Site "Rochester"]
[Date "1958.08.05"]
[Round "2"]
[White "O'Keefe, Jack"]
[Black "Byrne, Donald"]
[Result "1/2-1/2"]
[ECO "D58"]
[PlyCount "72"]
[EventDate "1958.08.04"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. Nc3 Be7 5. Bg5 0-0 6. e3 h6 7. Bh4 b6 8. Bd3 Bb7 9. 0-0 c5 10. Qe2 cxd4 11. Nxd4 Nbd7 12. cxd5 Nxd5 13. Bxe7 Qxe7 14. Nxd5 Bxd5 15. Bc4 Bxc4 16. Qxc4 Rfc8 17. Qe2 Qc5 18. Rfd1 Ne5 19. Nb3 Qc4 20. Rd2 a5 21. Qxc4 Rxc4 22. Rad1 Rac8 23. Kf1 Rb4 24. Ke2 a4 25. Rd8+ Rxd8 26. Rxd8+ Kh7 27. Rd4 Rc4 28. Nd2 Rc2 29. Rb4 b5 30. Kd1 Rc5 31. Ne4 Rd5+ 32. Rd4 Rxd4+ 33. exd4 Nc6 34. Nd6 Nxd4 35. Nxf7 Kg6 36. Nd6 Kf6 1/2-1/2

[Event "US Open-58"]
[Site "Cleveland"]
[Date "1957.08.16"]
[Round "12"]
[White "Nasvytis, A."]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "B72"]
[PlyCount "81"]
[EventDate "1957.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 g6 7. Be3 Bg7 8. Nb3 Be6 9. 0-0 Qc8 10. f4 Bg4 11. h3 Bxe2 12. Qxe2 Qe6 13. Qf3 Rc8 14. Rf2 b5 15. Nd4 Nxd4 16. Bxd4 b4 17. Nd5 Nxe4 18. Bxg7 Rg8 19. Re2 f5 20. Qb3 Kf7 21. Bd4 a5 22. Nb6 Rc6 23. Qxe6+ Kxe6 24. Na4 Rgc8 25. c3 Kf7 26. Rae1 Re8 27. Rc2 e5 28. fxe5 dxe5 29. Bf2 Rec8 30. Rec1 Nd6 31. b3 bxc3 32. Rxc3 Rxc3 33. Rxc3 Rxc3 34. Nxc3 Ke6 35. Bb6 Nb7 36. Kf2 g5 37. g4 h6 38. Nd1 e4 39. gxf5+ Kxf5 40. Ne3+ Ke6 41. Nc4 1-0

[Event "US Open-58"]
[Site "Cleveland"]
[Date "1957.08.14"]
[Round "10"]
[White "O'Keefe, Jack"]
[Black "Smith, Adam1"]
[Result "0-1"]
[ECO "E39"]
[PlyCount "52"]
[EventDate "1957.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Nc6 6. a3 Bxc5 7. e3 0-0 8. Nf3 Be7 9. Be2 d5 10. 0-0 dxc4 11. Bxc4 a6 12. Rd1 Qc7 13. Bd3 Bd7 14. b4 Rac8 15. Bb2 Ne5 16. Nxe5 Qxe5 17. Ne4 Qh5 18. Qb3 Bc6 19. Nxf6+ Bxf6 20. Bxf6 gxf6 21. Rd2 Bd5 22. Qd1 Qxd1+ 23. Raxd1 Rc3 24. Ra1 Rfc8 25. e4 Bb3 26. f4 Rd8 0-1

[Event "US Open-58"]
[Site "Cleveland"]
[Date "1957.08.13"]
[Round "9"]
[White "Fajans, Harry"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "E70"]
[PlyCount "59"]
[EventDate "1957.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bg5 h6 6. Bh4 c5 7. d5 Qa5 8. Qd2 0-0 9. f4 e6 10. dxe6 Bxe6 11. Bd3 Nc6 12. Nf3 a6 13. 0-0 b5 14. cxb5 axb5 15. f5 Bd7 16. e5 dxe5 17. Bxf6 Bxf6 18. fxg6 Kg7 19. gxf7 c4 20. Be4 Rad8 21. Qf2 Qa7 22. Qxa7 Nxa7 23. Nd5 Be6 24. Nxf6 Kxf6 25. Rae1 Rxf7 26. Nxe5+ Kg7 27. Nxf7 Bxf7 28. Re3 Rd7 29. Rg3+ Kf8 30. Bg6 1-0

[Event "US Open-58"]
[Site "Cleveland"]
[Date "1957.08.12"]
[Round "8"]
[White "O'Keefe, Jack"]
[Black "Henin, Charles"]
[Result "0-1"]
[ECO "E04"]
[PlyCount "48"]
[EventDate "1957.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 dxc4 5. Qa4+ Bd7 6. Qxc4 Nc6 7. Bg2 Na5 8. Qd3 c5 9. 0-0 Rc8 10. dxc5 Bxc5 11. a3 Qb6 12. Nc3 Nb3 13. Rb1 Nxc1 14. Rbxc1 Qxb2 15. Rb1 Qxa3 16. Rxb7 Bb6 17. Ne4 Qxd3 18. Nxf6+ gxf6 19. exd3 Bc6 20. Rxb6 axb6 21. Rb1 Rb8 22. Rc1 Kd7 23. Ne5+ fxe5 24. Bxc6+ Kd6 0-1

[Event "US Open-58"]
[Site "Cleveland"]
[Date "1957.08.11"]
[Round "7"]
[White "Popovych, Orest"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "B67"]
[PlyCount "41"]
[EventDate "1957.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 Rc8 10. Nf3 Qa5 11. Kb1 b5 12. e5 b4 13. exf6 bxc3 14. fxg7 Rb8 15. b3 Bxg7 16. Qxd6 Rb7 17. Nd4 Bxd4 18. Rxd4 Qb6 19. Rc4 a5 20. Be2 Ra7 21. Rd1 1-0

[Event "US Open-58"]
[Site "Cleveland"]
[Date "1957.08.07"]
[Round "3"]
[White "O'Keefe, Jack"]
[Black "Byrne, Donald"]
[Result "0-1"]
[ECO "A30"]
[PlyCount "60"]
[EventDate "1957.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. 0-0 c5 5. c4 Qc8 6. Nc3 g6 7. b3 Bg7 8. Bb2 0-0 9. d4 cxd4 10. Qxd4 d6 11. Nd5 Re8 12. Qh4 Bxd5 13. cxd5 Qc2 14. Rab1 Qxe2 15. Rfe1 Qd3 16. Nd4 Nbd7 17. Nc6 Kf8 18. Bh3 h5 19. Bxd7 Nxd7 20. Bxg7+ Kxg7 21. Nxe7 Ne5 22. Kh1 Qf3+ 23. Kg1 Qf6 24. Qxf6+ Kxf6 25. Nc6 Nf3+ 26. Kf1 Nd2+ 27. Kg1 Nxb1 28. Rxb1 Re2 29. a3 Rd2 30. Nb4 a5 0-1

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.03"]
[Round "7"]
[White "Ferryman, F."]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "147"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 cxd4 7. cxd4 Nge7 8. Na3 Nf5 9. Nc2 Nb4 10. Nxb4 Bxb4+ 11. Kf1 h5 12. h4 Bd7 13. g3 Bb5 14. Bxb5+ Qxb5+ 15. Kg2 Rc8 16. Bg5 Kd7 17. Qb3 a6 18. Rac1 Rxc1 19. Rxc1 Rc8 20. Rxc8 Kxc8 21. a3 Ba5 22. Qxb5 axb5 23. b4 Bb6 24. Be3 f6 25. exf6 gxf6 26. Kh3 e5 27. dxe5 Bxe3 28. fxe3 Nxe3 29. exf6 Kd7 30. Nd4 Kd6 31. Nxb5+ Ke6 32. f7 Kxf7 33. Nd6+ Kf6 34. Nxb7 Nc2 35. g4 hxg4+ 36. Kxg4 Nxa3 37. Nc5 Kg6 38. Ne6 Kh6 39. Nd4 Nc4 40. Nf5+ Kh7 41. b5 Nb6 42. Kg5 Nd7 43. Nd4 Kg7 44. Kf5 Kh6 45. Ke6 Nb6 46. Ke5 Kh5 47. Nf3 Kg4 48. Kd4 Kf4 49. Kc5 Kxf3 50. h5 Ke4 51. h6 Nd7+ 52. Kd6 d4 53. h7 Ne5 54. Ke6 Ng6 55. b6 d3 56. b7 d2 57. b8Q d1Q 58. Qb4+ Ke3 59. Qc5+ Ke4 60. Qf5+ Ke3 61. Qxg6 Qb3+ 62. Kf6 Qb2+ 63. Kf7 Qb7+ 64. Kf8 Qb4+ 65. Kg7 Qe7+ 66. Qf7 Qg5+ 67. Kf8 Qh6+ 68. Ke7 Qh4+ 69. Ke8 Qa4+ 70. Kf8 Qd4 71. Qe6+ Kf2 72. Kg8 Qd8+ 73. Kg7 Qg5+ 74. Qg6 1-0

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.02"]
[Round "6"]
[White "Jackson, Leroy"]
[Black "O'Keefe, Jack"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "96"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 e6 5. Bb5 Bd7 6. 0-0 a6 7. Bxc6 Bxc6 8. d3 Nf6 9. b3 Be7 10. Bb2 0-0 11. Ne2 d5 12. exd5 Nxd5 13. Qd2 b5 14. Ne5 Bb7 15. c4 bxc4 16. dxc4 Nf6 17. Qe3 Qc7 18. Ng3 Rfe8 19. Rad1 Rad8 20. Qc3 Ba8 21. Qc2 Rxd1 22. Rxd1 Rd8 23. Rxd8+ Qxd8 24. Qe2 Nd7 25. Nf3 Bf6 26. Bxf6 Nxf6 27. h3 h6 28. Kh2 Bb7 29. Ne5 Qd4 30. f5 Ne4 31. Nxe4 Bxe4 32. Nf3 Qd6+ 33. Kg1 exf5 34. Qd2 Qg3 35. Qd8+ Kh7 36. Qh4 Qxh4 37. Nxh4 a5 38. Nf3 Bxf3 39. gxf3 g5 40. Kf2 Kg6 41. a3 Kf6 42. Ke3 h5 43. f4 gxf4+ 44. Kxf4 h4 45. a4 Ke6 46. Kg5 Ke5 47. Kxh4 f4 48. Kg4 Ke4 0-1

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.02"]
[Round "5"]
[White "O'Keefe, Jack"]
[Black "Bisguier, Arthur Bernard"]
[Result "0-1"]
[ECO "D06"]
[PlyCount "120"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 c5 4. cxd5 cxd4 5. Qxd4 Qxd5 6. Nc3 Qa5 7. g3 Nc6 8. Qd1 g6 9. Bg2 Bg7 10. 0-0 0-0 11. Bd2 Qh5 12. Qb3 Rb8 13. Rfd1 b5 14. Ng5 Nd4 15. Qb4 Nc2 16. Qf4 e5 17. Qxe5 Bb7 18. Bxb7 Ng4 19. Qf4 Qxh2+ 20. Kf1 Rxb7 21. e3 b4 22. Qxg4 bxc3 23. Nf3 Qh5 24. Qxh5 gxh5 25. bxc3 Nxa1 26. Rxa1 Rfb8 27. Nd4 Rb1+ 28. Rxb1 Rxb1+ 29. Ke2 Ra1 30. c4 Bf8 31. c5 Rxa2 32. c6 Bd6 33. Nb5 Bb8 34. c7 Bxc7 35. Nxc7 a5 36. Nd5 a4 37. Nb4 Rb2 38. Kd3 a3 39. Kc3 Rb1 40. e4 Kg7 41. Be3 Kg6 42. Bd2 f6 43. Kc2 Rb2+ 44. Kc3 h4 45. gxh4 Kh5 46. Nc2 Kxh4 47. Nxa3 Ra2 48. Nc4 h5 49. f4 Kg4 50. e5 h4 51. exf6 h3 52. f7 Ra8 53. Ne3+ Kf3 54. Nf1 Rf8 55. f5 Rxf7 56. Nh2+ Kg3 57. Nf1+ Kf2 58. Nh2 Rxf5 59. Kd4 Kg3 60. Ke4 Rf2 0-1

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.01"]
[Round "4"]
[White "O'Keefe, Jack"]
[Black "Hoffman, Robert J"]
[Result "1-0"]
[ECO "A52"]
[PlyCount "47"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. e3 g6 6. Be2 Bg7 7. 0-0 0-0 8. Bd2 d6 9. Bc3 Ncxe5 10. Nxe5 Nxe5 11. f4 Nc6 12. Bxg7 Kxg7 13. Nc3 f5 14. e4 fxe4 15. Nxe4 Qe7 16. Nc3 Qe3+ 17. Kh1 Re8 18. Bf3 Be6 19. Bd5 Nd8 20. Bxe6 Nxe6 21. f5 gxf5 22. Rxf5 Nd4 23. Nd5 Qe4 24. Rf4 1-0

[Event "Tartakover Memorial op"]
[Site "Detroit"]
[Date "1956.09.01"]
[Round "3"]
[White "Popel, Stephan A"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "A48"]
[PlyCount "87"]
[EventDate "1956.08.31"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e3 0-0 5. d4 d6 6. Nbd2 Nbd7 7. Qc1 c5 8. Be2 b6 9. 0-0 Bb7 10. c4 d5 11. Bc3 dxc4 12. bxc4 cxd4 13. exd4 Rc8 14. Qa3 Qc7 15. Rac1 Ne4 16. Nxe4 Bxe4 17. Nd2 Ba8 18. Rfe1 Nf6 19. d5 Rfe8 20. Qb2 Qd8 21. Bf3 e6 22. Ne4 Nxe4 23. Bxg7 exd5 24. Bh8 f6 25. Bxe4 Kxh8 26. Bxd5 Bxd5 27. cxd5 Rxc1 28. Rxc1 Re5 29. Rd1 Qxd5 30. Qc1 Qe6 31. h4 Rc5 32. Qh6 Rc8 33. g3 Kg8 34. a4 Qg4 35. Rd6 Qxa4 36. h5 Qe8 37. Rxf6 Rc6 38. hxg6 hxg6 39. Rf4 Qe7 40. Rh4 Qg7 41. Qe3 Qf7 42. Re4 Kf8 43. Qd4 Rc8 44. Rf4 1-0

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "12"]
[White "Crittenden, Charles C"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "A32"]
[PlyCount "101"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 e6 5. g3 Bb4+ 6. Bd2 Qb6 7. Bg2 Bc5 8. Bc3 e5 9. Nc2 Bxf2+ 10. Kf1 Ng4 11. Nd2 Bxg3 12. e3 Nxh2+ 13. Kg1 f5 14. Rxh2 Bxh2+ 15. Kxh2 Qh6+ 16. Kg1 Nc6 17. Qf3 d6 18. b4 g5 19. b5 g4 20. Qe2 Nd8 21. c5 Nf7 22. cxd6 Qxd6 23. Rd1 Qc7 24. Nb1 Be6 25. Nb4 h5 26. Nd5 Bxd5 27. Bxd5 Rd8 28. Qf1 Nh6 29. Bb3 Ke7 30. Bb4+ Kf6 31. Nc3 Qb6 32. Rd3 Rxd3 33. Qxd3 Rd8 34. Nd5+ Rxd5 35. Bxd5 f4 36. Kf1 Nf5 37. exf4 exf4 38. Bc3+ Kg5 39. Bd2 h4 40. Be1 Qe3 41. Be4 Ng3+ 42. Bxg3 Qxd3+ 43. Bxd3 hxg3 44. Be4 b6 45. Kg1 f3 46. Bc6 Kf4 47. Bd7 g2 48. Kf2 g3+ 49. Kg1 Ke3 50. Bg4 Ke2 51. Bh5 1/2-1/2

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "6"]
[White "Fuster, Geza"]
[Black "O'Keefe, Jack"]
[Result "0-1"]
[ECO "A32"]
[PlyCount "124"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 e6 5. Nb5 Qb6 6. Bf4 Na6 7. N1c3 d5 8. e3 Bb4 9. Be2 Ne4 10. 0-0 Bxc3 11. bxc3 Bd7 12. c5 Qxc5 13. c4 dxc4 14. Nd6+ Nxd6 15. Bxd6 Qd5 16. Bf3 Qxd1 17. Rfxd1 0-0-0 18. Be7 Rde8 19. Bxb7+ Kxb7 20. Rxd7+ Kc6 21. Rd6+ Kc7 22. Rxa6 Kb7 23. Ra4 Rxe7 24. Rb1+ Kc8 25. Rxc4+ Rc7 26. Rcb4 Kd7 27. g3 Rhc8 28. Kg2 Rc2 29. Ra4 R8c7 30. Rb8 R2c4 31. Rxc4 Rxc4 32. Rg8 g6 33. Rg7 Ke7 34. Rxh7 Ra4 35. h4 Rxa2 36. g4 Rd2 37. h5 gxh5 38. Rxh5 Rd8 39. Ra5 Ra8 40. Ra6 Kd7 41. g5 Kc7 42. g6 Kb7 43. Ra2 Rg8 44. Rb2+ Ka8 45. Kf3 Rxg6 46. Rd2 Rf6+ 47. Kg4 Rf5 48. e4 Rc5 49. Rd8+ Kb7 50. Rf8 Rc7 51. Kg5 a5 52. Kf6 a4 53. Rh8 Kb6 54. Rh1 a3 55. Ra1 Ra7 56. f4 Kc5 57. Ke5 a2 58. f5 exf5 59. exf5 Ra6 60. f6 Kb4 61. Kf5 Ra5+ 62. Kg4 Kb3 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "10"]
[White "Medina, J."]
[Black "O'Keefe, Jack"]
[Result "0-1"]
[ECO "E87"]
[PlyCount "84"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Ne8 8. Qd2 f5 9. Bd3 a5 10. Nge2 c6 11. a4 Nf6 12. Bc2 Na6 13. dxc6 bxc6 14. Rd1 Ne8 15. c5 Ra7 16. Bg5 Bf6 17. Bxf6 Rxf6 18. Qe3 Rb7 19. b3 Qe7 20. cxd6 Rxd6 21. 0-0 f4 22. Qf2 Rxd1 23. Rxd1 Be6 24. Bd3 Nc5 25. Bc4 Nxb3 26. Bxe6+ Qxe6 27. Qh4 Rd7 28. Qe1 Nd6 29. g3 fxg3 30. Qxg3 Nc4 31. Rxd7 Qxd7 32. f4 Nd4 33. fxe5 Nxe5 34. Nxd4 Qxd4+ 35. Kf1 Nd3 36. Ke2 Qxc3 37. Qxd3 Qxd3+ 38. Kxd3 Kf7 39. Kd4 g5 40. Kc5 h5 41. Kb6 g4 42. Kxa5 h4 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "3"]
[White "Mednis, Edmar John"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "B73"]
[PlyCount "53"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 8. 0-0 0-0 9. Qd2 d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Rfd1 Be6 13. Bd4 Bxd4 14. Qxd4 Nxc3 15. Qxc3 Qb6 16. Rd4 c5 17. Ra4 Rfd8 18. Ra6 Qb4 19. Qxb4 cxb4 20. a3 Rac8 21. Bd1 bxa3 22. R6xa3 Bf5 23. c3 Rd2 24. b4 a6 25. Bf3 Rc2 26. h4 Bd3 27. Bb7 1/2-1/2

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "5"]
[White "O'Keefe, Jack"]
[Black "Araiza Munoz, Jose Joaquin"]
[Result "1-0"]
[ECO "C97"]
[PlyCount "115"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. h3 0-0 12. Nbd2 Bd7 13. Nf1 Rfd8 14. Ne3 g6 15. dxe5 dxe5 16. Nd5 Nxd5 17. exd5 Bc6 18. Qe2 Bxd5 19. Qxe5 Qxe5 20. Nxe5 Bf6 21. Ng4 Bg7 22. Bg5 Re8 23. Nf6+ Bxf6 24. Bxf6 Re6 25. Rxe6 fxe6 26. a4 b4 27. cxb4 cxb4 28. Be7 Nc6 29. Bc5 Rc8 30. Be3 Ne5 31. Bd1 Nd3 32. b3 e5 33. f3 e4 34. fxe4 Bxe4 35. Bd2 a5 36. g3 Rc6 37. Kf1 Bd5 38. Ke2 Nc5 39. Rb1 Re6+ 40. Be3 Ne4 41. Kd3 Nxg3 42. Rc1 Be4+ 43. Kc4 Nf5 44. Bf4 Nd6+ 45. Bxd6 Rxd6 46. Kb5 Rd5+ 47. Kb6 Bf5 48. h4 Kg7 49. Be2 Bd3 50. Rd1 Be4 51. Rxd5 Bxd5 52. Bd1 g5 53. hxg5 Kg6 54. Kxa5 Kxg5 55. Kxb4 h5 56. Kc5 Bg2 57. Bxh5 Kxh5 58. b4 1-0

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "7"]
[White "O'Keefe, Jack"]
[Black "Bisguier, Arthur Bernard"]
[Result "0-1"]
[ECO "E04"]
[PlyCount "76"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 c5 5. Bg2 Nc6 6. 0-0 dxc4 7. dxc5 Bxc5 8. Qxd8+ Kxd8 9. Nbd2 Nd5 10. Nxc4 f6 11. a3 b5 12. Ncd2 Bb7 13. e4 Nc7 14. Nb3 Bb6 15. e5 Nxe5 16. Nxe5 Bxg2 17. Kxg2 fxe5 18. Re1 Nd5 19. Rxe5 Kd7 20. Bd2 Rac8 21. Rc1 Rxc1 22. Bxc1 Rc8 23. Re2 Kd6 24. Be3 Nxe3+ 25. fxe3 Kd5 26. Nd4 Bxd4 27. exd4 Kxd4 28. Rxe6 a5 29. Re7 Rc2+ 30. Kh3 Rxb2 31. Rxg7 Ra2 32. Rxh7 Rxa3 33. Kg4 b4 34. h4 Ra1 35. h5 b3 36. Rb7 Kc3 37. h6 Rh1 38. Kg5 b2 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "4"]
[White "O'Keefe, Jack"]
[Black "Di Camillo, Attilio"]
[Result "1/2-1/2"]
[ECO "C29"]
[PlyCount "102"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 d4 7. Nf3 Nc6 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 Nxd4 11. c3 Nxf3+ 12. gxf3 Qh4+ 13. Qf2 Qf4 14. Qg3 Qe3+ 15. Be2 Bf5 16. f4 Qb6 17. d4 0-0-0 18. Bg4 g6 19. 0-0 Kb8 20. Bxf5 gxf5 21. Qf3 Rhg8+ 22. Kh1 Qa5 23. Rfb1 b6 24. a4 Qd5 25. Qxd5 Rxd5 26. Rg1 Rg6 27. Rg5 Rxg5 28. fxg5 c5 29. Rf1 cxd4 30. cxd4 Rxd4 31. Rxf5 Rd7 32. h4 Kc8 33. Rf6 Kd8 34. Rh6 Ke7 35. Kg2 Rd4 36. Rxh7 Rxa4 37. Kf3 Ke6 38. h5 Ra1 39. h6 Kxe5 40. Rh8 Rh1 41. Rg8 Kf5 42. Rg7 f6 43. gxf6 Kxf6 44. Rxa7 Rxh6 45. Ke4 Ke6 46. Kd4 Kd6 47. Kc4 Kc6 48. Kb3 Kb5 49. Rg7 Rh3+ 50. Kb2 Rh2+ 51. Kb1 Ka4 1/2-1/2

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "1"]
[White "O'Keefe, Jack"]
[Black "Saidy, Anthony Fred"]
[Result "0-1"]
[ECO "B66"]
[PlyCount "58"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 h6 9. Bh4 Nxe4 10. Qf4 Ng5 11. Nxc6 bxc6 12. Ne4 e5 13. Bxg5 hxg5 14. Qd2 d5 15. Nxg5 Be7 16. f4 e4 17. h4 Rb8 18. Qc3 Qc7 19. Qxg7 Qxf4+ 20. Kb1 Qf6 21. Qxf6 Bxf6 22. Be2 Rxb2+ 23. Kc1 Rxa2 24. Kd2 Rxh4 25. Rxh4 Bxg5+ 26. Kc3 Bxh4 27. Kb3 Ra5 28. Kb4 Bd8 29. Rh1 c5+ 0-1

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "8"]
[White "O'Keefe, Jack"]
[Black "Shaw, Jack F"]
[Result "1-0"]
[ECO "B67"]
[PlyCount "39"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 a6 9. f4 h6 10. Bh4 Bd7 11. Nf3 b5 12. e5 dxe5 13. fxe5 Nh7 14. Bxe7 Nxe7 15. Ne4 Nd5 16. Nd6+ Ke7 17. Bd3 f5 18. Bxf5 exf5 19. Qxd5 Be6 20. Qc5 1-0

[Event "US Open-57"]
[Site "Oklahoma"]
[Date "1956.??.??"]
[Round "9"]
[White "Theodorovich, Ivan"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "A04"]
[PlyCount "55"]
[EventDate "1956.07.16"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. d3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nd2 e6 6. Ngf3 Nge7 7. 0-0 0-0 8. c3 d6 9. a4 Rb8 10. h4 a6 11. Nh2 b5 12. axb5 axb5 13. Qc2 b4 14. Nb3 bxc3 15. bxc3 Qb6 16. Rb1 Ba6 17. Be3 Qc7 18. Rfd1 c4 19. dxc4 Bxc4 20. Nd2 Ne5 21. Rxb8 Rxb8 22. Nxc4 Nxc4 23. Bc1 Qc5 24. Bf1 d5 25. h5 Bh6 26. Ng4 Bxc1 27. Qxc1 Kh8 28. Qf4 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.14"]
[Round "12"]
[White "Godbold, Edmund"]
[Black "O'Keefe, Jack"]
[Result "0-1"]
[ECO "D56"]
[PlyCount "62"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 0-0 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. Qc2 Nxc3 10. Qxc3 dxc4 11. Qxc4 Nc6 12. Rc1 e5 13. dxe5 Nxe5 14. Qxc7 Nxf3+ 15. gxf3 Qf6 16. Qc3 Qxf3 17. Rg1 g6 18. Rg3 Qh5 19. Bg2 Be6 20. Bxb7 Rab8 21. Bf3 Qxh2 22. b3 Rbc8 23. Qd2 Qh4 24. Rxc8 Rxc8 25. Qa5 Rc2 26. Qxa7 Qb4+ 27. Kf1 Qd2 28. e4 Rc1+ 29. Kg2 Qe1 30. Qb8+ Kh7 31. Bd1 Rxd1 0-1

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.12"]
[Round "10"]
[White "O'Keefe, Jack"]
[Black "Heising, Charles R"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "53"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. 0-0 0-0 7. Be3 c6 8. a4 Ng4 9. Bc1 exd4 10. Nxd4 Nge5 11. Bb3 Nc5 12. Ba2 a5 13. h3 Ne6 14. f4 Nxd4 15. Qxd4 Nd7 16. Be3 Nc5 17. Rad1 Be6 18. e5 d5 19. f5 Bd7 20. f6 gxf6 21. exf6 Bd6 22. Nxd5 cxd5 23. Qxd5 Ne4 24. Qxe4 Qc7 25. Qd5 Qxc2 26. Qxd6 Bxa4 27. Bb1 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.11"]
[Round "9"]
[White "Weaks, Hunter"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "D68"]
[PlyCount "60"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 0-0 6. e3 Nbd7 7. Rc1 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. 0-0 Nxc3 12. Rxc3 e5 13. Qc2 e4 14. Nd2 Nf6 15. Re1 Bf5 16. f3 Bg6 17. f4 Rfd8 18. a3 Bf5 19. b4 a5 20. b5 cxb5 21. Bxb5 Rac8 22. Rc1 Rxc3 23. Qxc3 Nd5 24. Qb3 Be6 25. Bc4 Rc8 26. Rb1 a4 27. Qxb7 Qxb7 28. Rxb7 Nxe3 29. Bxe6 fxe6 30. Nxe4 Rc2 1/2-1/2

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.10"]
[Round "8"]
[White "O'Keefe, Jack"]
[Black "Alexander, Joe Matt"]
[Result "1-0"]
[ECO "B37"]
[PlyCount "93"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nc6 6. Nc2 d6 7. Be2 Be6 8. 0-0 Rc8 9. Nba3 Nf6 10. f3 Na5 11. Nd4 Qb6 12. Be3 0-0 13. Qd2 Qd8 14. b3 Nc6 15. Nab5 a6 16. Nc3 Nxd4 17. Bxd4 Nd7 18. Bxg7 Kxg7 19. Nd5 Bxd5 20. exd5 Qb6+ 21. Kh1 Nf6 22. f4 a5 23. g4 Ne4 24. Qb2+ f6 25. Bf3 Nc5 26. Rfe1 Kf7 27. Re3 Nd7 28. Rae1 Rfe8 29. Qf2 Qd8 30. Qh4 Nf8 31. Be4 a4 32. Bf5 Rc7 33. Be6+ Nxe6 34. dxe6+ Kg7 35. g5 Rh8 36. Qh6+ Kg8 37. gxf6 exf6 38. e7 Qe8 39. Re6 axb3 40. axb3 Kf7 41. Qh4 Qc6+ 42. Kg1 Ke8 43. Qxf6 Qc5+ 44. Kf1 Rg8 45. Rxd6 Rd7 46. Rxd7 Kxd7 47. Qe6+ 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.06"]
[Round "5"]
[White "Berzzarins, Valentins"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "73"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 0-0 6. Qc2 Nbd7 7. cxd5 Nxd5 8. Nxd5 Bxg5 9. Nxc7 Rb8 10. Nb5 a6 11. Nc3 b5 12. Bd3 g6 13. f4 Bh4+ 14. g3 Bb7 15. Be4 b4 16. Nd1 Rc8 17. Qg2 Bxe4 18. Qxe4 Be7 19. Nf3 Nf6 20. Qd3 Qd5 21. 0-0 a5 22. Nd2 Rfd8 23. Nf2 Rc7 24. Rfc1 Rxc1+ 25. Rxc1 Qxa2 26. b3 a4 27. bxa4 Qxa4 28. e4 Rb8 29. Nb3 Qa2 30. Ra1 Qa3 31. Rxa3 bxa3 32. Qc2 Ne8 33. e5 Nc7 34. Nd3 Nd5 35. Ndc1 Ra8 36. Na2 Ra7 37. Nc5 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.04"]
[Round "3"]
[White "Gladney, WF."]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "D41"]
[PlyCount "81"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. d4 c5 5. g3 Nc6 6. cxd5 Nxd5 7. Bg2 Be7 8. 0-0 0-0 9. dxc5 Nxc3 10. bxc3 Bxc5 11. Qc2 f6 12. Rb1 Qc7 13. Bb2 Bd7 14. Rfd1 Na5 15. e3 Rac8 16. Qe4 Qc6 17. Qd3 Be8 18. Nd4 Qd6 19. Nxe6 Qxd3 20. Rxd3 Bg6 21. Bd5 Bxd3 22. Nxc5+ Kh8 23. Nxd3 Rfd8 24. Nb4 Rc5 25. Bb3 Nxb3 26. axb3 Rd2 27. c4 a5 28. Nd5 b5 29. Bd4 bxc4 30. bxc4 Rc8 31. c5 h5 32. Nb6 Rc7 33. Ra1 Ra7 34. Nc4 Rc2 35. Rxa5 Rxa5 36. Nxa5 Kg8 37. c6 Kf7 38. Bb6 Ke6 39. c7 Kd7 40. Nb7 Rb2 41. Nd6 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.03"]
[Round "2"]
[White "O'Keefe, Jack"]
[Black "Faust, Edwin M"]
[Result "1-0"]
[ECO "C08"]
[PlyCount "87"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Qe2+ Qe7 7. dxc5 Qxe2+ 8. Nxe2 Bxc5 9. Nb3 Bb6 10. a4 a6 11. Bxc6+ bxc6 12. a5 Ba7 13. Bd2 Nf6 14. Bb4 Ne4 15. f3 Nf6 16. 0-0-0 Bb7 17. Bc5 Bxc5 18. Nxc5 0-0-0 19. Nd4 Nd7 20. Ndb3 Nxc5 21. Nxc5 Rhe8 22. Rhe1 Kc7 23. Kd2 Bc8 24. Rxe8 Rxe8 25. Re1 Rxe1 26. Kxe1 Kd6 27. b4 Ke5 28. c3 g5 29. Kd2 h5 30. Ke3 f6 31. g3 Kd6 32. Kd4 Kc7 33. Nd3 Kd6 34. f4 Bf5 35. Nc5 Bc8 36. fxg5 fxg5 37. h4 gxh4 38. gxh4 Kc7 39. Ke5 Bg4 40. Nxa6+ Kc8 41. Kd6 Be2 42. Nc5 Bb5 43. Ne6 Kb7 44. Nd8+ 1-0

[Event "US Open-55"]
[Site "New Orleans"]
[Date "1954.08.02"]
[Round "1"]
[White "Vives, D."]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "41"]
[EventDate "1954.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Ne7 6. 0-0 0-0 7. Bg5 c6 8. c3 Qc7 9. Qc2 Ng6 10. Re1 Bg4 11. Nbd2 h6 12. Bxh6 gxh6 13. Bxg6 fxg6 14. Qxg6+ Qg7 15. Qxd6 Bxf3 16. Nxf3 Rxf3 17. Re6 Kh7 18. Re7 Rf7 19. Rxf7 Qxf7 20. Re1 Kg8 21. Qd8+ 1-0

[Event "US Open-54"]
[Site "Milwaukee"]
[Date "1953.08.21"]
[Round "13"]
[White "O'Keefe, Jack"]
[Black "Sandrin, Angelo"]
[Result "1-0"]
[ECO "B84"]
[PlyCount "75"]
[EventDate "1953.08.10"]
[EventType "swiss"]
[EventRounds "13"]
[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. f4 Nc6 7. Be2 e6 8. Be3 Qc7 9. 0-0 Na5 10. Qd3 b5 11. Bf3 Bb7 12. Rae1 Rc8 13. g4 Nd7 14. f5 Nc5 15. Qd1 e5 16. b4 Nc4 17. bxc5 Nxe3 18. Rxe3 exd4 19. Qxd4 Qxc5 20. Rd1 Qxd4 21. Rxd4 Be7 22. a4 Bg5 23. Red3 Bf6 24. Rxd6 Rxc3 25. e5 Rxd3 26. Rxd3 Bxf3 27. exf6 Bxg4 28. fxg7 Rg8 29. f6 bxa4 30. c4 a3 31. Rxa3 Kd7 32. Rxa6 Bf5 33. c5 h6 34. Kf2 Re8 35. Ra7+ Ke6 36. Re7+ Kxf6 37. Rxe8 Kxg7 38. c6 1-0

[Event "US Open-54"]
[Site "Milwaukee"]
[Date "1953.08.20"]
[Round "12"]
[White "Cross, James"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "E02"]
[PlyCount "87"]
[EventDate "1953.08.10"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Bd7 6. Qxc4 Bc6 7. Nf3 Nbd7 8. Nc3 Be7 9. 0-0 0-0 10. b3 Nb6 11. Qd3 Nbd5 12. Ne5 Be8 13. Bb2 c5 14. dxc5 Bxc5 15. Nxd5 exd5 16. Qf5 Qc8 17. Qxc8 Rxc8 18. Rfd1 Bb5 19. e3 Rfd8 20. Rac1 Ne4 21. Bh3 Rc7 22. Bf5 Ng5 23. Rc2 Bb6 24. Rxc7 Bxc7 25. Kg2 f6 26. Nd3 Bb6 27. h4 Bxd3 28. Rxd3 g6 29. Bxf6 Rd6 30. Be7 Rc6 31. Bd7 Rc7 32. Rxd5 Nf7 33. Rd2 Ba5 34. b4 Bb6 35. Bf6 Rc4 36. Be6 Rc6 37. Bxf7+ Kxf7 38. Bd4 Rd6 39. Kf3 Ke6 40. Ke2 Kf5 41. Bxb6 Rxb6 42. Rd4 Ra6 43. Rd5+ Ke6 44. Ra5 1-0

[Event "US Open-54"]
[Site "Milwaukee"]
[Date "1953.08.18"]
[Round "10"]
[White "Evans, Larry Melvyn"]
[Black "O'Keefe, Jack"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "83"]
[EventDate "1953.08.10"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. Bg5 Be7 5. e3 0-0 6. cxd5 Nxd5 7. Bxe7 Qxe7 8. Bd3 Nf6 9. Nf3 Nbd7 10. Qc2 c5 11. 0-0 cxd4 12. exd4 b6 13. Rfe1 Bb7 14. d5 Nxd5 15. Bxh7+ Kh8 16. Be4 N7f6 17. Nxd5 Bxd5 18. Bxd5 Nxd5 19. Rad1 Rac8 20. Qe2 Rc5 21. Ne5 Rfc8 22. Nd3 R5c7 23. g3 Nf6 24. a3 Rc4 25. Ne5 Re4 26. Qd3 Rxe1+ 27. Rxe1 Kg8 28. Rd1 Qc7 29. Nf3 Qc2 30. b4 Ne4 31. Qxc2 Rxc2 32. Rd8+ Kh7 33. Rd7 Kg6 34. Rxa7 Rxf2 35. Ne5+ Kf5 36. Rxf7+ Kxe5 37. Rxf2 Nxf2 38. Kxf2 Kd4 39. a4 Kc4 40. a5 bxa5 41. bxa5 Kb5 42. Ke3 1-0

[Event "US Open-54"]
[Site "Milwaukee"]
[Date "1953.08.16"]
[Round "8"]
[White "Krauss, George"]
[Black "O'Keefe, Jack"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "46"]
[EventDate "1953.08.10"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. b3 d5 3. Nc3 Nf6 4. Bb2 dxe4 5. Qe2 Be7 6. Nxe4 0-0 7. Nf3 c5 8. 0-0-0 Nc6 9. d4 cxd4 10. Nxd4 Qc7 11. Nb5 Qf4+ 12. Nd2 a6 13. g3 Qf5 14. Nd4 Nxd4 15. Bxd4 Bd7 16. Nc4 Bc6 17. Ne3 Qa5 18. Nc4 Qxa2 19. f3 Rfd8 20. Bb2 b5 21. Rxd8+ Rxd8 22. Ne5 Ba3 23. Bxa3 Qa1# 0-1

[Event "US Open-54"]
[Site "Milwaukee"]
[Date "1953.08.16"]
[Round "7"]
[White "O'Keefe, Jack"]
[Black "Pavey, Max"]
[Result "0-1"]
[ECO "C99"]
[PlyCount "70"]
[EventDate "1953.08.10"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 cxd4 12. cxd4 Qc7 13. Nbd2 Bb7 14. d5 Bc8 15. Nf1 Bd7 16. g4 Rfc8 17. Bd3 Nb7 18. Ng3 Nc5 19. Be3 Nxd3 20. Qxd3 Qc2 21. Qxc2 Rxc2 22. Rec1 Rxb2 23. Bd2 b4 24. Rc7 Bd8 25. Rb7 a5 26. Be3 Bc8 27. Ra7 Rxa7 28. Bxa7 Rc2 29. Be3 Kf8 30. Rc1 Rxc1+ 31. Bxc1 Ba6 32. Nd2 Nd7 33. Nf5 Bc7 34. Nb3 a4 35. Nd2 Nc5 0-1

[Event "US Open-54"]
[Site "Milwaukee"]
[Date "1953.08.14"]
[Round "5"]
[White "Brasket, Curt Justin"]
[Black "O'Keefe, Jack"]
[Result "1/2-1/2"]
[ECO "D56"]
[PlyCount "70"]
[EventDate "1953.08.10"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 0-0 6. Nf3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. Qb3 Nxc3 10. bxc3 dxc4 11. Bxc4 b6 12. 0-0 Nd7 13. e4 Bb7 14. Rfe1 Rfe8 15. Rad1 a6 16. a4 c6 17. Bd3 b5 18. e5 Nb6 19. a5 Nd5 20. Nd2 c5 21. dxc5 Nf4 22. Be4 Bd5 23. Bxd5 exd5 24. Nf3 Qxc5 25. Rd4 Ng6 26. Rxd5 Qc7 27. Qb4 Rac8 28. Rd6 Qxc3 29. Qxc3 Rxc3 30. Rxa6 Nxe5 31. Kf1 f6 32. Nd4 b4 33. f4 Rd8 34. Ne6 Rd2 35. fxe5 Rcc2 1/2-1/2

