[Event "World op 49th"]
[Site "Philadelphia"]
[Date "2021.07.04"]
[Round "6"]
[White "Ahlborg, John"]
[Black "Katz, Alexander R"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2224"]
[BlackElo "2405"]
[PlyCount "66"]
[EventDate "2021.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+ 6. Bd2 a5 7. Qc2 Bxd2+ 8. Nbxd2 b5 9. a4 c6 10. 0-0 0-0 11. b3 cxb3 12. Nxb3 b4 13. e4 Ba6 14. Rfe1 h6 15. Qc5 Bd3 16. Ne5 Nfd7 17. Nxd7 Nxd7 18. Qxc6 Rc8 19. Qd6 Rc3 20. Nc1 Nb6 21. Qe5 Nc4 22. Qh5 Qxd4 23. Nxd3 Rxd3 24. Rad1 Nb2 25. Rc1 Rd2 26. Rf1 Nd3 27. Rcd1 Rxf2 28. Rxf2 Qxf2+ 29. Kh1 Qe3 30. Rf1 Nf2+ 31. Kg1 Nh3+ 32. Kh1 Qg1+ 33. Rxg1 Nf2# 0-1

[Event "Liberec op 17th"]
[Site "Liberec"]
[Date "2017.03.04"]
[Round "9"]
[White "Ahlborg, John"]
[Black "Buchcar, Tomas"]
[Result "1-0"]
[ECO "A56"]
[WhiteElo "2243"]
[BlackElo "2153"]
[PlyCount "173"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. g3 Nbd7 7. Bg2 Nf8 8. h4 h6 9. Bh3 a6 10. a4 b6 11. Ra3 Rb8 12. Rb3 Bd7 13. Bd2 Qc8 14. f3 Ng6 15. Bxd7+ Qxd7 16. h5 Nf8 17. Qe2 N8h7 18. g4 0-0 19. Nh3 Ne8 20. Qg2 Bh4+ 21. Kd1 f6 22. Nf4 Bg5 23. Ne6 Rf7 24. f4 exf4 25. Qf3 Nf8 26. Nxf8 Rxf8 27. Kc2 Nc7 28. Ra1 Rfe8 29. Rba3 Qe7 30. Re1 Qe5 31. b3 Rb7 32. Nd1 Reb8 33. Nf2 b5 34. axb5 axb5 35. Nd3 Qe7 36. Rea1 bxc4 37. bxc4 Re8 38. Ra7 Rxa7 39. Rxa7 Ra8 40. Rb7 Qd7 41. Nb2 Qc8 42. Rb6 Ne8 43. Bxf4 Bxf4 44. Qxf4 Qc7 45. Rb5 Ra3 46. Qf5 Qe7 47. Nd3 Ra2+ 48. Kd1 Qa7 49. Qc8 Qa4+ 50. Ke1 Kf8 51. Rb8 Qa5+ 52. Kf1 Qa4 53. Ke1 Ra1+ 54. Kf2 Rh1 55. Kg2 Rd1 56. Qc6 Rd2+ 57. Nf2 Rxf2+ 58. Kxf2 Qc2+ 59. Kg3 Qd3+ 60. Kh4 Qxe4 61. Qxd6+ Kg8 62. Qe6+ Qxe6 63. dxe6 Kf8 64. Kg3 Ke7 65. Kf4 Nd6 66. Ra8 Kxe6 67. Ra7 Ne8 68. Ra6+ Kd7 69. Ke4 Ke7 70. Kf5 Nd6+ 71. Kg6 Nxc4 72. Kxg7 Ne5 73. Kxh6 Kf7 74. Ra7+ Ke6 75. Kg7 Nxg4 76. Rc7 Kd6 77. Rc8 Kd5 78. Kg6 Kd4 79. Kf5 Nh6+ 80. Kxf6 c4 81. Kg5 Nf7+ 82. Kg6 Ne5+ 83. Kf5 Nf7 84. Rc7 Nd6+ 85. Kg6 c3 86. Rxc3 Kxc3 87. h6 1-0

[Event "Liberec op 17th"]
[Site "Liberec"]
[Date "2017.03.01"]
[Round "6"]
[White "Ahlborg, John"]
[Black "Pychova, Nela"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2243"]
[BlackElo "2009"]
[PlyCount "71"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. 0-0 a6 7. a4 Be7 8. Qe2 0-0 9. Rd1 cxd4 10. exd4 Nc6 11. Nc3 Nb4 12. Bg5 h6 13. Bh4 Nbd5 14. Ne5 Nxc3 15. bxc3 Nd5 16. Bxe7 Nxe7 17. Rd3 Qa5 18. Rh3 b5 19. Bd3 f5 20. Bc2 Ra7 21. Qd2 Rc7 22. Bb3 Kh7 23. Qb2 Rb7 24. axb5 Qxb5 25. c4 Qb4 26. Rg3 g6 27. Qc1 Qd6 28. Rh3 f4 29. Qd1 Qc7 30. Bc2 Rb2 31. Qh5 Ng8 32. Qxg6+ Kh8 33. Bd3 a5 34. Qg4 Rf6 35. Ng6+ Kg7 36. Ne7+ 1-0

[Event "Liberec op 17th"]
[Site "Liberec"]
[Date "2017.02.28"]
[Round "5"]
[White "Plischki, Sebastian"]
[Black "Ahlborg, John"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2349"]
[BlackElo "2243"]
[PlyCount "113"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 0-0 6. Nd5 Re8 7. Qf5 Nxd5 8. cxd5 g6 9. Qe4 Nd4 10. Nxd4 exd4 11. Qxd4 Bf8 12. Be2 Qg5 13. 0-0 Bg7 14. Qc4 c6 15. Bf3 b5 16. Qb3 Bb7 17. d4 Rec8 18. dxc6 dxc6 19. Rd1 Qe7 20. a4 c5 21. Bxb7 Qxb7 22. Qxb5 Qxb5 23. axb5 cxd4 24. exd4 Rab8 25. g3 Rd8 26. Be3 Rxb5 27. Rxa7 Rxb2 28. Rc1 Bxd4 29. Bxd4 Rxd4 30. Rc8+ Kg7 31. Rcc7 g5 32. Rxf7+ Kg6 33. Rg7+ Kf6 34. Rxh7 g4 35. Rh6+ Kg5 36. Rc6 Rb5 37. Kg2 Rd2 38. Rg7+ Kf5 39. Rc4 Rbb2 40. Rf4+ Ke5 41. Rgxg4 Ke6 42. h4 Rd1 43. Rg6+ Ke7 44. h5 Rbb1 45. Kh3 Rb5 46. Kg4 Rh1 47. Rg5 Rb8 48. Rg7+ Ke6 49. Rf5 Ra8 50. Rg6+ Ke7 51. Kg5 Rb8 52. g4 Ra8 53. Rb5 Rc8 54. Rb7+ Kf8 55. Kh6 Rhc1 56. f4 R1c5 57. Rgg7 1-0

[Event "Liberec op 17th"]
[Site "Liberec"]
[Date "2017.02.27"]
[Round "4"]
[White "Ahlborg, John"]
[Black "Yalkanova, Merdjen"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "2243"]
[BlackElo "1898"]
[PlyCount "63"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 b6 5. Bg2 Bb7 6. Ne5 Bd6 7. Qa4+ c6 8. Nc3 0-0 9. Bg5 h6 10. Bf4 Nh5 11. Bd2 f5 12. Bf3 Nf6 13. Ng6 Re8 14. Bf4 Bxf4 15. gxf4 dxc4 16. Qxc4 Ba6 17. Qa4 Nd5 18. e3 Kh7 19. Rg1 b5 20. Qd1 Nd7 21. Bh5 Rg8 22. Rc1 N5f6 23. Bf3 Rc8 24. b4 Nb6 25. Ne5 Nfd5 26. Bxd5 Nxd5 27. Qh5 g6 28. Rxg6 Qf8 29. Nxd5 cxd5 30. Rxc8 Bxc8 31. Ke2 a5 32. a3 1-0

[Event "Liberec op 17th"]
[Site "Liberec"]
[Date "2017.02.27"]
[Round "3"]
[White "Vavrinec, Tomas"]
[Black "Ahlborg, John"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "1965"]
[BlackElo "2243"]
[PlyCount "74"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nb6 7. 0-0 Be7 8. Rb1 a5 9. d3 0-0 10. Be3 Be6 11. a3 Re8 12. Na4 Nxa4 13. Qxa4 Qd7 14. Qb5 Bf8 15. Rfc1 Ba2 16. Ra1 Bd5 17. Bh3 Qd6 18. Nd2 Nd4 19. Bxd4 Bc6 20. Rxc6 bxc6 21. Bxe5 cxb5 22. Bxd6 Bxd6 23. Kf1 g6 24. Bd7 Reb8 25. Bc6 Ra6 26. Bd5 a4 27. e3 Kf8 28. Rc1 Ke7 29. Ke2 f5 30. d4 b4 31. axb4 Rxb4 32. Nc4 Rb5 33. e4 c6 34. Bg8 Kf8 35. Be6 Bc7 36. exf5 gxf5 37. Bxf5 Rxf5 0-1

[Event "Liberec op 17th"]
[Site "Liberec"]
[Date "2017.02.26"]
[Round "2"]
[White "Ahlborg, John"]
[Black "Briza, Jiri"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2243"]
[BlackElo "1975"]
[PlyCount "77"]
[EventDate "2017.02.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 177 Extra"]
[Source "ChessBase"]
[SourceDate "2017.04.27"]
[SourceVersion "1"]
[SourceVersionDate "2017.04.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. Bg5 0-0 6. e3 c5 7. Be2 a6 8. 0-0 Re8 9. h3 Nbd7 10. Qd2 Nf8 11. Rad1 Bf5 12. d5 Qc7 13. Rfe1 Ne4 14. Nxe4 Bxe4 15. Nh2 Bf5 16. Bg4 Bd7 17. Bxd7 Nxd7 18. Ng4 b5 19. b3 bxc4 20. bxc4 Rab8 21. f4 f6 22. Bh6 Rb4 23. Qd3 Bxh6 24. Nxh6+ Kg7 25. Ng4 h5 26. Nh2 Reb8 27. Nf3 Nf8 28. Nh4 Qd7 29. Rf1 Qa4 30. Qe4 R8b7 31. Rc1 Qxa2 32. Rc2 Qa4 33. Kh2 Qe8 34. Rf3 Rb1 35. Rg3 Rf1 36. Nxg6 Rbb1 37. Nxe7+ Kf7 38. Rg7+ Kxg7 39. Nf5+ 1-0

[Event "Pan American Intercollegiate-chT"]
[Site "Kenner"]
[Date "2016.12.28"]
[Round "2.1"]
[White "Ahlborg, John"]
[Black "Robson, Ray"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2210"]
[BlackElo "2675"]
[PlyCount "163"]
[EventDate "2016.12.27"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 176 Extra"]
[Source "ChessBase"]
[SourceDate "2017.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2017.03.02"]
[SourceQuality "1"]
[WhiteTeam "Pittsburgh Univ"]
[BlackTeam "Webster Univ"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "USA"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 0-0 9. Be2 b6 10. 0-0 Bb7 11. Qd3 e6 12. Bg5 Qc7 13. Qe3 Nd7 14. Rfd1 Rfe8 15. Bb5 Bc6 16. Bxc6 Qxc6 17. d5 exd5 18. exd5 Qa4 19. Qd3 c4 20. Qf1 Qxa2 21. Rb4 h6 22. Be3 Bxc3 23. Rxc4 Rac8 24. Rxc8 Rxc8 25. Bxh6 Qc4 26. Rc1 b5 27. Qd1 Rc5 28. Ng5 Qxd5 29. Qe2 Bg7 30. Rxc5 Qxc5 31. Qe8+ Qf8 32. Qxd7 Bxh6 33. Qxb5 Qc8 34. h4 Qc1+ 35. Kh2 Qf4+ 36. Kg1 Bxg5 37. hxg5 Qd4 38. g3 Qa1+ 39. Kg2 a5 40. f4 a4 41. f5 gxf5 42. Qxf5 Qa2+ 43. Kg1 Qe6 44. Qd3 Qb6+ 45. Kg2 Qb2+ 46. Kh3 Kg7 47. g6 Qb3 48. Qd4+ Kxg6 49. Qg4+ Kf6 50. Qf4+ Ke6 51. Qe4+ Kd6 52. Qd4+ Kc6 53. Qe4+ Kc5 54. Qe7+ Kd4 55. Qf6+ Ke3 56. Qe5+ Kf2 57. Qf4+ Ke2 58. Qe4+ Kd1 59. Qd4+ Kc1 60. Qf4+ Kc2 61. Qf2+ Kb1 62. Qe1+ Kb2 63. Qf2+ Qc2 64. Qf6+ Kb1 65. Qf1+ Kb2 66. Qf6+ Qc3 67. Qf2+ Kb1 68. Qf1+ Kc2 69. Qf2+ Kd1 70. Qf1+ Qe1 71. Qd3+ Qd2 72. Qb1+ Qc1 73. Qd3+ Ke1 74. Qe4+ Kf2 75. Qxa4 Qh1+ 76. Kg4 Qf3+ 77. Kg5 f6+ 78. Kg6 Kxg3 79. Qd7 Qf4 80. Qf5 Qg5+ 81. Qxg5+ fxg5 82. Kxg5 1/2-1/2

