[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.23"]
[Round "10"]
[White "Jackson, Leroy"]
[Black "Formanek, Edward W"]
[Result "1-0"]
[ECO "C14"]
[PlyCount "51"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 0-0 8. Nf3 c5 9. Bd3 f5 10. 0-0 Nc6 11. Nb5 a6 12. Nd6 cxd4 13. Kh1 Nc5 14. g4 fxg4 15. Bxh7+ Kxh7 16. Ng5+ Kg8 17. Qxg4 g6 18. Rf3 Rf5 19. Nxf5 exf5 20. Qg2 Ne6 21. Rg1 Nxg5 22. Rg3 Qe6 23. Rxg5 Ne7 24. Qh3 Bd7 25. Rh5 Rf8 26. Rh7 1-0

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.23"]
[Round "11"]
[White "Suttles, Duncan"]
[Black "Jackson, Leroy"]
[Result "1-0"]
[ECO "B25"]
[PlyCount "61"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. d3 d6 4. g3 g6 5. Bg2 Bg7 6. Nh3 Nf6 7. 0-0 0-0 8. Bg5 Bd7 9. f3 Rb8 10. Qd2 Nd4 11. Nd1 e5 12. c3 Ne6 13. Bh6 b5 14. Bxg7 Kxg7 15. Ne3 Qc8 16. f4 Nxf4 17. Nxf4 exf4 18. Rxf4 Be6 19. Raf1 Ng8 20. a3 Ne7 21. Rh4 Ng8 22. Nf5+ Kh8 23. Nxd6 Qd8 24. e5 f6 25. Rhf4 Qe7 26. Qe3 Bb3 27. Qxc5 Rfc8 28. exf6 Rxc5 29. fxe7 Nxe7 30. d4 Rg5 31. Nf7+ 1-0

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.23"]
[Round "10"]
[White "Verber, Richard William"]
[Black "Jackson, Leroy"]
[Result "1/2-1/2"]
[ECO "B93"]
[PlyCount "106"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Bd3 Nc6 8. Nf3 Bd7 9. 0-0 Rc8 10. Kh1 e6 11. Qe1 Be7 12. Bd2 0-0 13. Qg3 Nb4 14. e5 Nh5 15. Qh3 Nxd3 16. cxd3 g6 17. g4 Ng7 18. Ne4 f6 19. Qh6 Bc6 20. exf6 Bxf6 21. Nxf6+ Rxf6 22. Be3 Bxf3+ 23. Rxf3 Qc6 24. Raf1 Qd5 25. Kg1 Rc2 26. Qh4 g5 27. Qxg5 Qxg5 28. fxg5 Rxf3 29. Rxf3 Rxb2 30. Rf2 Rxf2 31. Kxf2 e5 32. Kf3 Kf7 33. h4 b5 34. h5 Ne8 35. d4 Ke6 36. dxe5 dxe5 37. Bd2 Nd6 38. Bb4 Nc4 39. Ke4 a5 40. Be1 b4 41. h6 Nd6+ 42. Kd3 Nf7 43. Kc4 Nxg5 44. Kb5 e4 45. Kxa5 e3 46. Bxb4 Nf3 47. g5 Kf5 48. Kb6 e2 49. a4 Ne5 50. a5 Nc4+ 51. Kc5 Nxa5 52. Bxa5 Kxg5 53. Bd2+ Kg6 1/2-1/2

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.19"]
[Round "6"]
[White "Jackson, Leroy"]
[Black "Dahlberg, Ivars A"]
[Result "0-1"]
[ECO "B88"]
[PlyCount "68"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[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. Bc4 e6 7. Be3 a6 8. 0-0 Qc7 9. Be2 Na5 10. f4 Be7 11. e5 dxe5 12. fxe5 Qxe5 13. Bf4 Qc5 14. Na4 Qa7 15. Kh1 Bd7 16. c4 0-0 17. Be3 Bxa4 18. Qxa4 Bc5 19. Rad1 e5 20. Qxa5 exd4 21. Rxf6 gxf6 22. Bh6 Rfe8 23. Bd3 Qb6 24. Qd2 Qe6 25. Rf1 Bf8 26. Qf4 Bxh6 27. Qxh6 f5 28. Qh3 Qg6 29. Bxf5 Qg7 30. Kg1 Re3 31. Qh5 Rae8 32. b4 d3 33. Qd1 Re2 34. g3 Qh6 0-1

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.18"]
[Round "2"]
[White "Fomin, Gennady"]
[Black "Jackson, Leroy"]
[Result "0-1"]
[ECO "B89"]
[PlyCount "60"]
[EventDate "1966.08.14"]
[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. Bc4 e6 7. Bb3 Be7 8. Be3 Qc7 9. Qe2 Nc6 10. f4 0-0 11. h3 e5 12. Nf3 Na5 13. 0-0-0 Nxb3+ 14. axb3 b5 15. Nd5 Nxd5 16. exd5 Bf5 17. Rhf1 Rfc8 18. Ne1 exf4 19. Rxf4 Bg6 20. h4 h5 21. Qf2 a5 22. Rd2 a4 23. bxa4 bxa4 24. Bb6 Qb7 25. Kd1 a3 26. bxa3 Rxa3 27. Ke2 Qa6+ 28. c4 Rxc4 29. Rxc4 Qxc4+ 30. Nd3 Bxd3+ 0-1

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.18"]
[Round "5"]
[White "Jackson, Leroy"]
[Black "Bisguier, Arthur Bernard"]
[Result "0-1"]
[ECO "C67"]
[PlyCount "96"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. Bg5 Be7 8. dxe5 Bxg5 9. Nxg5 Qxg5 10. exd6 cxd6 11. Qxd6 Qe7 12. Qxe7+ Kxe7 13. Re1+ Be6 14. Nd2 Rhd8 15. Ne4 Rd5 16. c4 Rd4 17. c5 Kf8 18. a3 Rad8 19. Rac1 R8d5 20. f4 a5 21. Rc3 h6 22. h3 Rf5 23. g3 Kg8 24. h4 Rfd5 25. Nd6 Rd2 26. Nc4 Rd1 27. Rce3 Rxe1+ 28. Rxe1 Rxc5 29. Nd6 b6 30. b4 Rd5 31. Nc8 Rd3 32. Ne7+ Kf8 33. Ng6+ fxg6 34. Rxe6 Rxg3+ 35. Kf2 Rxa3 36. Rxc6 Rb3 37. bxa5 bxa5 38. Ra6 Rh3 39. Rxa5 Rxh4 40. Kg3 Rh5 41. Ra8+ Kf7 42. Ra7+ Kg8 43. Ra8+ Kh7 44. Kg4 Rb5 45. Ra4 h5+ 46. Kh4 Rf5 47. Rb4 Kh6 48. Ra4 Rxf4+ 0-1

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.17"]
[Round "3"]
[White "Jackson, Leroy"]
[Black "Browne, Walter Shawn"]
[Result "1-0"]
[ECO "D25"]
[PlyCount "93"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. Qb3 Bxf3 7. gxf3 Nbd7 8. Nc3 Nb6 9. Be2 Be7 10. Bd2 0-0 11. 0-0 c5 12. dxc5 Bxc5 13. Rfd1 Qe7 14. Rac1 Rfd8 15. f4 e5 16. Na4 Nxa4 17. Qxa4 Bd6 18. Bf3 exf4 19. exf4 Qd7 20. Qb3 Rab8 21. Bb4 Qe7 22. Bxd6 Rxd6 23. Rxd6 Qxd6 24. Qxb7 Rxb7 25. Rc8+ Qf8 26. Bxb7 Qxc8 27. Bxc8 Nd5 28. f5 Kf8 29. Bb7 Nf4 30. f6 Nd3 31. fxg7+ Kxg7 32. Kf1 Nxb2 33. Ke2 Kf6 34. Bd5 Na4 35. Kd3 Nb6 36. Bb3 Ke7 37. Kd4 f6 38. a4 Kd7 39. a5 Nc8 40. Bc2 Kd6 41. Bxh7 Ne7 42. Be4 f5 43. Bh1 Ng6 44. Kc4 Ne5+ 45. Kb5 Kc7 46. h4 Ng4 47. h5 1-0

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.16"]
[Round "4"]
[White "Grombacher, Walter"]
[Black "Jackson, Leroy"]
[Result "0-1"]
[ECO "C29"]
[PlyCount "88"]
[EventDate "1966.08.14"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[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 Nxh1 9. Nxc7+ Kd8 10. Nxa8 Bg4 11. Bg2 Bxf3 12. Qxf3 Qxe5+ 13. Kf1 Bd6 14. Bxh1 Nc6 15. c3 Re8 16. Bd2 Qxh2 17. Qg2 Qxg2+ 18. Bxg2 Kc8 19. a4 Na5 20. Re1 Rxe1+ 21. Kxe1 Kb8 22. Nb6 axb6 23. Be3 Kc7 24. Ke2 Nc6 25. d4 h6 26. Bd5 f5 27. Kf3 g5 28. Bf7 Kd7 29. b4 Ke7 30. Bg6 Kf6 31. Be8 Ne7 32. Bd2 g4+ 33. Kf2 f4 34. c4 Ke6 35. Bh5 Kf5 36. Be8 Ke4 37. c5 Bc7 38. Bc3 g3+ 39. Kg1 f3 40. a5 Bf4 41. Be1 Be3+ 42. Bf2 Bxf2+ 43. Kf1 Ke3 44. Bd7 g2# 0-1

[Event "US Open-67"]
[Site "Seattle"]
[Date "1966.08.14"]
[Round "1"]
[White "Jackson, Leroy"]
[Black "Rook, Henry"]
[Result "1-0"]
[ECO "B45"]
[PlyCount "33"]
[EventDate "1966.08.14"]
[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 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Bb4 6. Ndb5 d5 7. exd5 exd5 8. Qxd5 Be6 9. Qxd8+ Kxd8 10. Bg5+ f6 11. 0-0-0+ Bd7 12. Bf4 Ne5 13. Nd5 Ba5 14. Bxe5 fxe5 15. Nd6 Nh6 16. Nxb7+ Kc8 17. Nxa5 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

