[Event "US Open-70"]
[Site "Lincoln"]
[Date "1969.08.21"]
[Round "11"]
[White "Popovych, Orest"]
[Black "Ackerman, David"]
[Result "1-0"]
[ECO "C34"]
[PlyCount "47"]
[EventDate "1969.08.10"]
[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 e5 2. f4 exf4 3. Nf3 Be7 4. Bc4 Nc6 5. d4 g5 6. 0-0 d6 7. c3 Bg4 8. Qb3 Na5 9. Bxf7+ Kf8 10. Qa3 c6 11. Bxg8 Rxg8 12. Nbd2 b5 13. b4 Nc4 14. Nxc4 bxc4 15. Qa6 Be6 16. Qxc6 g4 17. Bxf4 gxf3 18. Rxf3 Rg7 19. Bxd6+ Kg8 20. Bxe7 Rxe7 21. Raf1 Rc8 22. Rg3+ Kh8 23. Qb5 Qc7 24. Qg5 1-0

[Event "US Open-70"]
[Site "Lincoln"]
[Date "1969.08.20"]
[Round "10"]
[White "Ackerman, David"]
[Black "Bolton, James Michael"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "104"]
[EventDate "1969.08.10"]
[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 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. Be2 Nh6 7. dxc5 Bxc5 8. 0-0 Ng4 9. Qe1 Ngxe5 10. Nxe5 Nxe5 11. b4 Bd6 12. Be3 Qc7 13. Na3 Bd7 14. Rd1 0-0 15. Qd2 a5 16. f4 axb4 17. fxe5 Bxe5 18. Nb5 Bxb5 19. Bxb5 bxc3 20. Qc2 d4 21. Rxd4 Bxd4 22. Bxd4 e5 23. Qxc3 Qa5 24. Bxe5 Qxb5 25. Bxg7 Rfc8 26. Qg3 Qb6+ 27. Bd4+ Qg6 28. Qe5 Kf8 29. Bc5+ Rxc5 30. Qxc5+ Kg8 31. Rf5 h6 32. a3 b6 33. Qe5 Rxa3 34. Qe8+ Kg7 35. Qe5+ Kh7 36. Qe4 Ra1+ 37. Kf2 Ra2+ 38. Ke3 Kg8 39. Qe8+ Kg7 40. Qe5+ f6 41. Qe7+ Qf7 42. Qxf7+ Kxf7 43. Kf3 Rb2 44. h3 b5 45. g4 b4 46. Kg3 Rb3+ 47. Kh4 Re3 48. Rh5 b3 49. Rb5 Ke6 50. Rb6+ Ke5 51. Rb4 Kd5 52. Rb6 Rf3 0-1

[Event "US Open-70"]
[Site "Lincoln"]
[Date "1969.08.19"]
[Round "9"]
[White "Harkins, James L"]
[Black "Ackerman, David"]
[Result "0-1"]
[ECO "C56"]
[PlyCount "110"]
[EventDate "1969.08.10"]
[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 e5 2. d4 exd4 3. Nf3 Nc6 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. 0-0 Be7 10. f3 Nc5 11. f4 f5 12. b4 Ne6 13. Nxf5 Bxb4 14. Ng3 Qh4 15. Nd2 Bc5+ 16. Kh1 0-0 17. Nb3 Bb6 18. f5 Nc5 19. Rf4 Qd8 20. Bb2 Nxb3 21. axb3 Be3 22. Raa4 Bxf4 23. Rxf4 Qc8 24. e6 Bxe6 25. Qd4 Rf7 26. fxe6 Qxe6 27. Rxf7 Qxf7 28. Nf5 Qf6 29. Qxf6 gxf6 30. Ne7+ Kf7 31. Nxc6 Re8 32. Bd4 Re1+ 33. Bg1 Rc1 34. Nb4 Ke6 35. g3 Kd6 36. Kg2 a5 37. Be3 Re1 38. Bf4+ Ke6 39. Nc6 Kd7 40. Nd4 c5 41. Bd2 Ra1 42. Ne2 Ra2 43. Kf2 Rxc2 44. Bxa5 d4 45. Ke1 Rb2 46. b4 d3 47. Nf4 c4 48. Nd5 Kc6 49. Nc3 Rxh2 50. b5+ Kc5 51. b6 Kc6 52. g4 Rg2 53. b7 Kxb7 54. Nd5 Re2+ 55. Kd1 Re5 0-1

[Event "US Open-70"]
[Site "Lincoln"]
[Date "1969.08.15"]
[Round "6"]
[White "Woodworth, Robert"]
[Black "Ackerman, David"]
[Result "1/2-1/2"]
[ECO "E30"]
[PlyCount "64"]
[EventDate "1969.08.10"]
[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 e6 3. Nc3 Bb4 4. Bg5 c5 5. d5 b5 6. e3 Qa5 7. Bxf6 gxf6 8. Qc2 bxc4 9. Bxc4 Ba6 10. Bxa6 Nxa6 11. Nge2 Rb8 12. 0-0 Bxc3 13. Nxc3 0-0 14. Ne4 Kg7 15. Qe2 f5 16. Ng3 Qb5 17. b3 Qxe2 18. Nxe2 Kf6 19. Rac1 d6 20. Rfd1 e5 21. f3 Rb6 22. Rc4 Rb4 23. Rxb4 Nxb4 24. Nc3 Ke7 25. Kf2 Rb8 26. Rb1 f6 27. Ke2 Rg8 28. Rg1 Rg7 29. Kd2 a5 30. a3 Na6 31. Nb5 Kd7 32. Kd3 Rg8 1/2-1/2

[Event "US Open-70"]
[Site "Lincoln"]
[Date "1969.08.14"]
[Round "5"]
[White "Ackerman, David"]
[Black "Ludgate, Alan Templeton"]
[Result "0-1"]
[ECO "C30"]
[PlyCount "44"]
[EventDate "1969.08.10"]
[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 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 d6 5. f4 0-0 6. Nf3 Nc6 7. Na4 Bb4+ 8. c3 Ba5 9. b4 Bb6 10. Nxb6 axb6 11. f5 d5 12. exd5 Nxd5 13. g4 Nxc3 14. Qb3 Nd4 15. Qxc3 Nxf3+ 16. Kf2 Nd4 17. h4 b5 18. Bg5 Qd6 19. Bb3 b6 20. Be3 Bb7 21. Rhc1 Nxb3 22. Qxb3 e4 0-1

[Event "US Open-70"]
[Site "Lincoln"]
[Date "1969.08.12"]
[Round "3"]
[White "Ackerman, David"]
[Black "Marchand, Erich Watkinson"]
[Result "1/2-1/2"]
[ECO "B49"]
[PlyCount "121"]
[EventDate "1969.08.10"]
[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 e6 5. Nc3 Qc7 6. Be2 a6 7. a3 b5 8. 0-0 Bb7 9. Be3 Nf6 10. Bf3 Ne5 11. Re1 Be7 12. Bf4 Nxf3+ 13. Qxf3 e5 14. Nd5 Bxd5 15. exd5 d6 16. Nc6 Kf8 17. Rad1 e4 18. Qb3 Rc8 19. c3 Kg8 20. f3 Qb6+ 21. Kh1 Bf8 22. fxe4 Ng4 23. Rd4 Nf2+ 24. Kg1 Nd3 25. Rf1 Nc5 26. Qc2 h6 27. e5 dxe5 28. Bxe5 Nd7 29. Qf5 Nxe5 30. Qxc8 Nxc6 31. Qxc6 Bc5 32. Qc8+ Kh7 33. Qf5+ Qg6 34. Qxf7 Qxf7 35. Rxf7 Bxd4+ 36. cxd4 Rd8 37. Rf5 Kg6 38. Re5 Kf7 39. Kf2 Rc8 40. Ke3 Rc2 41. d6 Rc6 42. Rf5+ Ke8 43. Re5+ Kd7 44. Re7+ Kxd6 45. Rxg7 Rc2 46. b4 Kd5 47. Rg6 Rc3+ 48. Kd2 Rxa3 49. Rxh6 Ra2+ 50. Kc3 Rxg2 51. Rh5+ Kd6 52. Kd3 Rb2 53. Rh6+ Kd5 54. Rxa6 Rb3+ 55. Kc2 Rh3 56. Rb6 Rxh2+ 57. Kc3 Rh3+ 58. Kb2 Kc4 59. Rc6+ Kxb4 60. Rc2 Rd3 61. Rh2 1/2-1/2

[Event "US Open-70"]
[Site "Lincoln"]
[Date "1969.08.11"]
[Round "2"]
[White "Wilcox, Rex"]
[Black "Ackerman, David"]
[Result "1/2-1/2"]
[ECO "B33"]
[PlyCount "114"]
[EventDate "1969.08.10"]
[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 a6 6. Nxc6 dxc6 7. Qxd8+ Kxd8 8. Bg5 h6 9. Bh4 g5 10. Bg3 b5 11. 0-0-0+ Bd7 12. Be2 Kc8 13. e5 Ne8 14. Rd2 Nc7 15. Rhd1 Be6 16. Bf3 Kb7 17. Ne4 Kb6 18. b3 Bg7 19. c4 b4 20. h4 g4 21. Be2 Bf5 22. Bd3 Ne6 23. f4 gxf3 24. gxf3 h5 25. f4 Bxe4 26. Bxe4 Bh6 27. Bf2+ Nc5 28. Be3 Bxf4 29. Bxf4 Nxe4 30. Be3+ c5 31. Rd7 Rhe8 32. Rf1 Kc6 33. Rd3 f6 34. e6 Rad8 35. Rxd8 Rxd8 36. Kc2 Nd6 37. Rd1 Nb7 38. Rf1 Rd6 39. Rf5 Rxe6 40. Kd3 Rd6+ 41. Ke4 Rd1 42. Rxh5 Ra1 43. Rh7 Kd6 44. h5 Ke6 45. h6 Rxa2 46. Rg7 Rh2 47. Kf3 Rh3+ 48. Kg2 Rh5 49. Rg8 Na5 50. Ra8 Nxb3 51. Rxa6+ Ke5 52. Rc6 e6 53. Bxc5 Rxh6 54. Bxb4 f5 55. Rd6 f4 56. Rd3 Rg6+ 57. Kf2 Rg3 1/2-1/2

[Event "US Open-50"]
[Site "Omaha"]
[Date "1949.07.16"]
[Round "6"]
[White "Ackerman, David"]
[Black "Pohle, Ronald E"]
[Result "1-0"]
[ECO "B91"]
[PlyCount "69"]
[EventDate "1949.07.11"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e5 7. Nb3 Be6 8. g3 Nbd7 9. Bg2 Be7 10. 0-0 0-0 11. Qd2 Qc7 12. Rfd1 Rfd8 13. Nd5 Nxd5 14. exd5 Bxg5 15. Qxg5 h6 16. Qc1 Bf5 17. c4 Rdc8 18. Nd2 Nc5 19. Qc3 Qb6 20. b3 Nd3 21. Rf1 a5 22. Ne4 Nc5 23. Qe3 Bxe4 24. Bxe4 a4 25. Bf5 Rd8 26. Bc2 axb3 27. axb3 Qb4 28. Qf3 Ra3 29. Qf5 g6 30. Qf6 Rd7 31. f4 e4 32. Rxa3 Qxa3 33. Ra1 Qxa1+ 34. Qxa1 e3 35. Kf1 1-0

[Event "US Open-50"]
[Site "Omaha"]
[Date "1949.07.13"]
[Round "3"]
[White "Ackerman, David"]
[Black "Le Cornu, Phillip"]
[Result "0-1"]
[ECO "D26"]
[PlyCount "48"]
[EventDate "1949.07.11"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 e6 5. Nc3 dxc4 6. Bxc4 Nf6 7. Nf3 Be7 8. 0-0 0-0 9. Qe2 Nbd7 10. Re1 Nb6 11. Bb3 Nbd5 12. Ne5 Nxc3 13. bxc3 Qc7 14. c4 b6 15. Bb2 Bb7 16. Rad1 Rad8 17. Rd3 Be4 18. Re3 Bg6 19. d5 Bc5 20. Rh3 exd5 21. Nxg6 hxg6 22. Bxf6 gxf6 23. Qd2 Rfe8 24. Rd1 dxc4 0-1

[Event "US Open-50"]
[Site "Omaha"]
[Date "1949.07.12"]
[Round "2"]
[White "Hartleb, Glenn E"]
[Black "Ackerman, David"]
[Result "1-0"]
[ECO "D81"]
[PlyCount "67"]
[EventDate "1949.07.11"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3 dxc4 5. Qxc4 Be6 6. Qb5+ Nc6 7. Nf3 Nd5 8. e4 Nxc3 9. bxc3 Bg7 10. Bd2 Bd7 11. Qxb7 0-0 12. Be2 Rb8 13. Qa6 Rb6 14. Qa3 e6 15. 0-0 Qa8 16. Be3 Rbb8 17. Nd2 Rfe8 18. e5 Ne7 19. Bf3 Bc6 20. Rab1 Bxf3 21. Nxf3 Nd5 22. c4 Bf8 23. Qd3 Nb4 24. Qd2 Qe4 25. Rb3 Nc2 26. Bh6 Bb4 27. Qg5 Bf8 28. Bxf8 Kxf8 29. Rxb8 Rxb8 30. Qf6 Qb7 31. Ng5 c6 32. Nxe6+ Ke8 33. Nc5 Qa8 34. e6 1-0

