[Event "Edmonton-ch"]
[Site "Edmonton"]
[Date "2019.01.17"]
[Round "1.2"]
[White "Kalisvaart, Peter"]
[Black "Ludwig, David A"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2090"]
[BlackElo "1826"]
[PlyCount "55"]
[EventDate "2019.01.10"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 d6 3. Nc3 Nd7 4. e4 fxe4 5. Nxe4 Ngf6 6. Qe2 e6 7. Bxf6 Nxf6 8. 0-0-0 Nxe4 9. Qxe4 Qg5+ 10. f4 Qa5 11. Kb1 d5 12. Qe3 Bd7 13. f5 Be7 14. fxe6 Bc6 15. Nf3 Bf6 16. Ne5 Bxe5 17. Qxe5 0-0-0 18. Be2 Rhg8 19. Rd3 Kb8 20. Ra3 Qb4 21. Bg4 Qe7 22. Rf1 Rgf8 23. Raf3 Rxf3 24. Rxf3 Rf8 25. a3 Rf6 26. Rxf6 gxf6 27. Qf5 b6 28. Bf3 1-0

[Event "Edmonton-ch"]
[Site "Edmonton"]
[Date "2019.01.10"]
[Round "1.1"]
[White "Ludwig, David A"]
[Black "Kalisvaart, Peter"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "1826"]
[BlackElo "2090"]
[PlyCount "72"]
[EventDate "2019.01.10"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nc6 2. e4 g6 3. Nf3 d6 4. h3 e5 5. Nc3 Bg7 6. d3 Nge7 7. Be2 0-0 8. Bd2 Nd4 9. Nxd4 exd4 10. Nd5 Nxd5 11. cxd5 f5 12. 0-0 c5 13. f3 Bd7 14. Rc1 fxe4 15. fxe4 Qh4 16. Be1 Rxf1+ 17. Bxf1 Qf6 18. Bd2 Rf8 19. Qe1 b5 20. Rc2 b4 21. b3 a5 22. Bc1 Ra8 23. Qf2 a4 24. Qxf6 Bxf6 25. Be2 axb3 26. axb3 Ra1 27. Kf2 Rb1 28. Bb2 Bg5 29. Kf3 Be3 30. Kg3 Kf7 31. Bg4 Bxg4 32. Kxg4 Kf6 33. Re2 h5+ 34. Kg3 g5 35. Rxe3 Rxb2 36. Rf3+ Ke7 0-1

[Event "Edmonton-ch"]
[Site "Edmonton"]
[Date "2018.01.11"]
[Round "1.2"]
[White "Kalisvaart, Peter"]
[Black "Ludwig, David A"]
[Result "1/2-1/2"]
[ECO "A86"]
[WhiteElo "2092"]
[BlackElo "1896"]
[PlyCount "40"]
[EventDate "2018.01.04"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "CAN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d6 2. c4 f5 3. g3 g6 4. Bg2 Nf6 5. Nc3 Bg7 6. d5 0-0 7. Nh3 a5 8. 0-0 Na6 9. Be3 Bd7 10. Nf4 Ng4 11. Bd4 Bxd4 12. Qxd4 Nc5 13. h3 Nf6 14. Nd3 Nxd3 15. exd3 c5 16. Qe3 Rf7 17. Rfe1 Qf8 18. Ne2 Nh5 19. f4 Nf6 20. a3 Qd8 1/2-1/2

[Event "Edmonton-ch"]
[Site "Edmonton"]
[Date "2018.01.04"]
[Round "1.1"]
[White "Ludwig, David A"]
[Black "Kalisvaart, Peter"]
[Result "0-1"]
[ECO "D07"]
[WhiteElo "1896"]
[BlackElo "2092"]
[PlyCount "108"]
[EventDate "2018.01.04"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "CAN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 Nc6 2. d4 d5 3. Bf4 e5 4. dxe5 d4 5. a3 g5 6. Bc1 Bg7 7. e3 dxe3 8. Qxd8+ Nxd8 9. Bxe3 Bxe5 10. Bxg5 Bxb2 11. Ra2 Bf6 12. Bxf6 Nxf6 13. Bd3 Rg8 14. g3 b6 15. Nd2 Bb7 16. Ngf3 Ne6 17. 0-0 Nc5 18. Re1+ Kf8 19. Bf1 Re8 20. Raa1 Kg7 21. Nd4 Rxe1 22. Rxe1 Rd8 23. N2f3 Nfe4 24. Re3 Kf6 25. Be2 a6 26. h4 Nd2 27. Nxd2 Rxd4 28. Nb3 Nxb3 29. Rxb3 Rd2 30. Re3 a5 31. g4 h6 32. Kh2 Rd4 33. g5+ hxg5 34. hxg5+ Kxg5 35. Re7 Re4 36. Rxc7 Rxe2 37. Rxb7 Rxf2+ 38. Kg3 Rf6 39. c5 bxc5 40. Rb5 Rc6 41. Rxa5 f5 42. a4 c4 43. Rd5 c3 44. Rd1 f4+ 45. Kf3 c2 46. Rc1 Rc3+ 47. Kf2 Kf5 48. a5 Ke4 49. Ke2 f3+ 50. Kd2 Rc8 51. a6 Rd8+ 52. Ke1 Kd3 53. a7 Ra8 54. Ra1 Rxa7 0-1

[Event "Edmonton op qual 12th"]
[Site "Edmonton"]
[Date "2017.04.30"]
[Round "5"]
[White "Ludwig, David A"]
[Black "Kalisvaart, Peter"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "1843"]
[BlackElo "2089"]
[PlyCount "87"]
[EventDate "2017.04.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nc6 2. Nf3 e5 3. Nc3 g6 4. g3 Bg7 5. Bg2 Nge7 6. 0-0 0-0 7. d3 d6 8. Ne1 f5 9. f4 exf4 10. Bxf4 Nd4 11. Qd2 c6 12. Bh6 Qb6 13. Be3 f4 14. gxf4 Nef5 15. Bf2 Qa5 16. Nf3 Ne6 17. e3 d5 18. cxd5 cxd5 19. d4 b6 20. Nxd5 Qxd5 21. Ne5 Qd8 22. Bxa8 Ba6 23. Bg2 Bxf1 24. Rxf1 g5 25. Nc6 Qd6 26. fxg5 Nxg5 27. Qb4 Qxb4 28. Nxb4 Re8 29. Re1 Ne4 30. Bxe4 Rxe4 31. Nd5 Kf7 32. Nc3 Re8 33. Kg2 b5 34. a3 Rb8 35. Ne4 b4 36. axb4 Rxb4 37. Re2 Bf8 38. Rc2 Rb3 39. Ng5+ Kg6 40. Ne6 Bh6 41. e4 Ne3+ 42. Bxe3 Rxe3 43. e5 Kf5 44. Nc5 1-0

[Event "Edmonton op qual 12th"]
[Site "Edmonton"]
[Date "2017.04.29"]
[Round "3"]
[White "Ludwig, David A"]
[Black "Sasata, Robert"]
[Result "0-1"]
[ECO "D34"]
[WhiteElo "1843"]
[BlackElo "2246"]
[PlyCount "54"]
[EventDate "2017.04.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. g3 d5 4. cxd5 exd5 5. d4 c5 6. Nf3 Nc6 7. Bg2 Be7 8. 0-0 0-0 9. e3 c4 10. b3 cxb3 11. Qxb3 Na5 12. Qc2 Bd7 13. Ne5 Rc8 14. Bd2 Be6 15. a4 Ne4 16. Bxe4 dxe4 17. Qxe4 Nb3 18. Qc2 Nxd2 19. Qxd2 Bb4 20. Rfc1 Qa5 21. Qd3 Bxc3 22. Rab1 Bb4 23. Nc4 Qxa4 24. d5 Rfd8 25. e4 a5 26. Qf3 Bd7 27. Ra1 Qb5 0-1

[Event "Edmonton op qual 12th"]
[Site "Edmonton"]
[Date "2017.04.29"]
[Round "2"]
[White "Mah, Sean Kenneth"]
[Black "Ludwig, David A"]
[Result "0-1"]
[ECO "B05"]
[WhiteElo "1808"]
[BlackElo "1843"]
[PlyCount "58"]
[EventDate "2017.04.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. Nf3 Bg4 6. Be2 dxe5 7. Nxe5 Bxe2 8. Kxe2 e6 9. b3 N8d7 10. Bb2 Nxe5 11. dxe5 Qg5 12. Rg1 Rd8 13. Qc2 Qh5+ 14. f3 Qxh2 15. Nd2 Bc5 16. Rgf1 Qxg2+ 17. Ke1 0-0 18. Qc1 Be3 19. Bc3 Bf4 20. Rf2 Bg3 21. Ne4 Bxf2+ 22. Nxf2 Qxf3 23. Qc2 Rd7 24. Bd2 Rfd8 25. Bg5 f6 26. exf6 gxf6 27. Bh6 Kh8 28. Rd1 Rxd1+ 29. Nxd1 Qh1+ 0-1

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2016.12.18"]
[Round "5"]
[White "Ludwig, David A"]
[Black "Saeed, Mohsen"]
[Result "0-1"]
[ECO "A87"]
[WhiteElo "1802"]
[PlyCount "34"]
[EventDate "2016.12.17"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. b3 f5 2. Bb2 d6 3. d4 Nf6 4. Nf3 g6 5. g3 Bg7 6. Bg2 0-0 7. c4 c6 8. 0-0 h6 9. Nfd2 g5 10. Nc3 e5 11. dxe5 dxe5 12. e4 f4 13. Nf3 Qe7 14. Qe2 g4 15. Nxe5 Qxe5 16. Nd5 f3 17. Bxf3 gxf3 0-1

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2016.12.18"]
[Round "4"]
[White "Ludwig, David A"]
[Black "Tuvera, Mark Jhovel"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "1802"]
[PlyCount "131"]
[EventDate "2016.12.17"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 d5 2. cxd5 Qxd5 3. Nc3 Qd6 4. g3 Nf6 5. Bg2 c6 6. Nf3 Bg4 7. 0-0 e6 8. Qb3 Qc7 9. d4 Be7 10. e4 0-0 11. Bf4 Qd7 12. Rad1 Qc8 13. Rfe1 Re8 14. Rd2 Nbd7 15. Rc1 Nf8 16. d5 Ng6 17. Be3 e5 18. Rdc2 Qd7 19. dxc6 bxc6 20. Rd2 Qc8 21. Qa4 h5 22. Nd5 Bxf3 23. Nxf6+ Bxf6 24. Bxf3 h4 25. Qxc6 Qh3 26. Bg2 Qg4 27. h3 Qe6 28. Qxe6 Rxe6 29. a3 Re7 30. Rdc2 Rb7 31. Bc5 Rb3 32. Bb4 hxg3 33. Bc3 gxf2+ 34. Kxf2 Rd8 35. Bf1 Bg5 36. Bc4 Rb6 37. Rg1 Bh4+ 38. Ke3 Rf6 39. Rcg2 Kh7 40. Be1 Bxe1 41. Rxe1 Nf4 42. Rd2 Rfd6 43. Red1 Rxd2 44. Rxd2 Rxd2 45. Kxd2 Kg8 46. Bf1 Kf8 47. b4 Ke7 48. Kc3 Kd6 49. Kc4 Kc7 50. a4 g6 51. Kc3 f6 52. Kc4 Kd6 53. b5 Ne6 54. a5 Nd4 55. Bg2 g5 56. Kb4 f5 57. exf5 Nxf5 58. b6 a6 59. Bb7 Kd7 60. Bxa6 Kc6 61. Bb5+ Kb7 62. Kc5 Nd4 63. a6+ Kb8 64. Bd3 Ne6+ 65. Kd6 Nd8 66. a7+ 1-0

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2016.12.17"]
[Round "3"]
[White "Guerrero, Nestor"]
[Black "Ludwig, David A"]
[Result "1/2-1/2"]
[ECO "B03"]
[BlackElo "1802"]
[PlyCount "100"]
[EventDate "2016.12.17"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nf3 d6 4. Bc4 e6 5. d4 dxe5 6. dxe5 Be7 7. 0-0 0-0 8. Bd2 b6 9. Nc3 Bb7 10. Qe2 Nxc3 11. Bxc3 c5 12. Rad1 Qc7 13. Rd2 Nc6 14. Rfd1 Rad8 15. a3 Rxd2 16. Rxd2 Rd8 17. Bb5 Rxd2 18. Qxd2 Qd8 19. Qxd8+ Bxd8 20. Nd2 Ne7 21. Nc4 Bc6 22. Ba6 Nd5 23. Bd2 Bc7 24. Nd6 Bxd6 25. exd6 Kf8 26. c4 Nf6 27. b4 Ne4 28. Be3 Ke8 29. bxc5 bxc5 30. f3 Nxd6 31. Bxc5 Bb7 32. Bxb7 Nxb7 33. Bxa7 Na5 34. c5 Kd7 35. Bb6 Nb7 36. Kf2 Kc6 37. Ke3 Nxc5 38. Bxc5 Kxc5 39. h4 Kb5 40. g4 Ka4 41. Kf4 f6 42. g5 Kxa3 43. gxf6 gxf6 44. Kg4 Kb4 45. Kh5 f5 46. Kh6 e5 47. Kg5 e4 48. fxe4 fxe4 49. Kf4 Kc5 50. Kxe4 Kd6 1/2-1/2

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2016.12.17"]
[Round "2"]
[White "Koneru, Nimai"]
[Black "Ludwig, David A"]
[Result "1/2-1/2"]
[ECO "D15"]
[WhiteElo "1758"]
[BlackElo "1802"]
[PlyCount "94"]
[EventDate "2016.12.17"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Bf5 4. Nf3 Nf6 5. Bg5 h6 6. Bf4 e6 7. e3 Bd6 8. Bxd6 Qxd6 9. cxd5 exd5 10. Bd3 Bxd3 11. Qxd3 Nbd7 12. h3 0-0 13. 0-0 Rfe8 14. Rab1 Ne4 15. b4 Nxc3 16. Qxc3 Rac8 17. Qd3 Nf6 18. Ne5 Ne4 19. Rfc1 f6 20. Ng6 Qe6 21. Nf4 Qf7 22. b5 g5 23. Ne2 Nd6 24. bxc6 bxc6 25. Qa6 Nc4 26. Rb7 Rc7 27. Rxc7 Qxc7 28. Rb1 Re7 29. Ng3 Nd6 30. Rc1 Nc4 31. Nf5 Rh7 32. e4 Qb7 33. Nxh6+ Kf8 34. Qxb7 Rxb7 35. Ng4 Kf7 36. exd5 cxd5 37. Ne3 Nxe3 38. fxe3 Ke6 39. g4 Kd6 40. Rf1 Ke6 41. Rf2 a5 42. Rc2 a4 43. Rc6+ Ke7 44. Kf1 Rb1+ 45. Ke2 Rb2+ 46. Kd3 Rxa2 47. Ra6 Ra3+ 1/2-1/2

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2016.12.17"]
[Round "1"]
[White "Ludwig, David A"]
[Black "Robertson, Trevor"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1802"]
[BlackElo "1681"]
[PlyCount "109"]
[EventDate "2016.12.17"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 c5 3. e3 Nc6 4. f4 Bf5 5. Nf3 e6 6. Be2 Nf6 7. 0-0 Be7 8. d3 h6 9. h3 0-0 10. Nbd2 b5 11. Ne5 Nxe5 12. Bxe5 Nd7 13. Bb2 Bf6 14. Bxf6 Nxf6 15. Bf3 Rc8 16. e4 dxe4 17. dxe4 Qd4+ 18. Kh1 Bh7 19. Qe2 c4 20. Rfd1 c3 21. Nf1 Qc5 22. a4 b4 23. Rd3 Rfd8 24. Rad1 Rxd3 25. Qxd3 Nd5 26. g3 Nf6 27. Kg2 g5 28. Qd4 Kg7 29. Qxc5 Rxc5 30. Rd4 a5 31. Ne3 gxf4 32. gxf4 e5 33. fxe5 Rxe5 34. Nc4 Rc5 35. Kf2 Bg6 36. Ke3 Ne8 37. Bd1 Nc7 38. Rd6 Rg5 39. h4 Rg3+ 40. Kf2 Rh3 41. Nxa5 Bxe4 42. Nc4 Bxc2 43. Bxc2 Rh2+ 44. Ke1 Rxc2 45. Kd1 Rh2 46. Ne3 Rb2 47. Nf5+ Kf8 48. Rd8+ Ne8 49. Nxh6 Rxb3 50. Nf5 Ra3 51. h5 Rxa4 52. h6 Ra1+ 53. Kc2 Rh1 54. Rc8 f6 55. Rc4 1-0

[Event "Edmonton op 11th"]
[Site "Edmonton"]
[Date "2016.06.26"]
[Round "5"]
[White "Ludwig, David A"]
[Black "Yao, David"]
[Result "1/2-1/2"]
[ECO "E68"]
[WhiteElo "1819"]
[BlackElo "1627"]
[PlyCount "97"]
[EventDate "2016.06.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 c6 7. d4 Nbd7 8. e4 e5 9. dxe5 dxe5 10. Qe2 Qc7 11. h3 b6 12. Be3 Bb7 13. Nd2 Rfd8 14. f4 Nh5 15. Qf2 exf4 16. gxf4 Nc5 17. Bxc5 bxc5 18. e5 Rd3 19. Nde4 Bc8 20. Rad1 Rxh3 21. Bxh3 Bxh3 22. Rfe1 Qc8 23. Qh4 Qf5 24. Qg5 Qxf4 25. Qxf4 Nxf4 26. Nxc5 Re8 27. N5e4 Ne6 28. Nf6+ Bxf6 29. exf6 Rb8 30. Rd7 Ng5 31. Rd3 Be6 32. b3 h5 33. Red1 Kh7 34. Kg2 Kh6 35. Rd8 Rxd8 36. Rxd8 Nh7 37. Ra8 Nxf6 38. Rxa7 h4 39. Rc7 g5 40. Rxc6 h3+ 41. Kh1 g4 42. Rxe6 fxe6 43. c5 Kg5 44. c6 g3 45. c7 Ng4 46. Ne4+ Kf4 47. c8Q Kxe4 48. Qxe6+ Kf4 49. Qc4+ 1/2-1/2

[Event "Edmonton op 11th"]
[Site "Edmonton"]
[Date "2016.06.26"]
[Round "4"]
[White "Young, Joseph"]
[Black "Ludwig, David A"]
[Result "0-1"]
[ECO "D01"]
[WhiteElo "1834"]
[BlackElo "1819"]
[PlyCount "86"]
[EventDate "2016.06.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 e6 4. Qd3 Be7 5. f3 b6 6. 0-0-0 Ba6 7. Qd2 0-0 8. h4 Nbd7 9. e4 Bxf1 10. Rxf1 c5 11. e5 cxd4 12. Qxd4 Ne8 13. Bxe7 Qxe7 14. f4 Rc8 15. Nge2 Qc5 16. Rd1 a6 17. Qxc5 bxc5 18. Ne4 Nb6 19. Ng5 h6 20. Nf3 Nc7 21. g4 Rb8 22. h5 a5 23. g5 a4 24. gxh6 gxh6 25. Rh3 Kh7 26. Nh4 Rg8 27. f5 Rg5 28. fxe6 fxe6 29. Rf1 Rbg8 30. Ng6 Nd7 31. Rf7+ Rg7 32. Nf8+ Nxf8 33. Rxf8 Rxe5 34. Rf2 Reg5 35. Rf4 d4 36. Kd2 Nd5 37. Rf8 Rg2 38. c3 e5 39. Kd3 Nb6 40. cxd4 cxd4 41. Rb8 Nd5 42. b4 Rxe2 43. Kxe2 Nf4+ 0-1

[Event "Edmonton op 11th"]
[Site "Edmonton"]
[Date "2016.06.25"]
[Round "2"]
[White "Bhavik, Dave"]
[Black "Ludwig, David A"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "1669"]
[BlackElo "1819"]
[PlyCount "47"]
[EventDate "2016.06.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 f5 2. c4 g6 3. g3 Nf6 4. Bg2 Bg7 5. Nc3 d6 6. Nf3 0-0 7. Bg5 Qe8 8. 0-0 Na6 9. Bxf6 Bxf6 10. e4 fxe4 11. Nxe4 Bg7 12. Re1 c6 13. Nxd6 Qd8 14. Nxc8 Rxc8 15. Bh3 Rb8 16. Be6+ Kh8 17. Ne5 Bxe5 18. Rxe5 Qb6 19. Qd2 Rbd8 20. Rd1 c5 21. d5 Nc7 22. Qc3 Qb4 23. Qxb4 cxb4 24. Rde1 1-0

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2015.12.13"]
[Round "5"]
[White "Ludwig, David A"]
[Black "Briones, Dante"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "1871"]
[BlackElo "1938"]
[PlyCount "96"]
[EventDate "2015.12.12"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 a6 4. c4 Nf6 5. Nf3 d6 6. d3 g6 7. Be2 Bg7 8. 0-0 0-0 9. Nc3 h6 10. a3 d5 11. cxd5 Nxd5 12. Qc2 Re8 13. Rfd1 Nde7 14. Rd2 g5 15. d4 exd4 16. exd4 Ng6 17. d5 Nce7 18. Rad1 Bf5 19. Bd3 Bxd3 20. Qxd3 Nf4 21. Qc2 Qc8 22. Ne4 Qg4 23. Ne1 Nexd5 24. Bxg7 Kxg7 25. Qb2+ Kg6 26. f3 Qe6 27. g3 Nh3+ 28. Kh1 c6 29. Ng2 f5 30. Ne3 fxe4 31. Nxd5 Nf2+ 32. Rxf2 cxd5 33. fxe4 Qxe4+ 34. Kg1 Rf8 35. Qc2 Qxc2 36. Rxc2 Rf3 37. Rxd5 Rxb3 38. a4 Rf8 39. Rc4 h5 40. Rd6+ Rf6 41. Rd7 g4 42. Rcc7 Rb1+ 43. Kg2 Rb2+ 44. Kg1 Rb1+ 45. Kg2 Rfb6 46. Rg7+ Kf5 47. Rgf7+ Ke5 48. Rfe7+ Kf5 1/2-1/2

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2015.12.13"]
[Round "4"]
[White "McLeod, Logan"]
[Black "Ludwig, David A"]
[Result "1-0"]
[ECO "B04"]
[BlackElo "1871"]
[PlyCount "103"]
[EventDate "2015.12.12"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 c6 6. Be2 Nd7 7. Nf3 g6 8. c4 Nc7 9. Bf4 Bg7 10. Nc3 0-0 11. Qd2 Nf6 12. 0-0-0 Bd7 13. Ne5 b5 14. Bh6 bxc4 15. h4 Ncd5 16. Bxg7 Kxg7 17. h5 Rh8 18. h6+ Kf8 19. Bxc4 e6 20. f3 Nxc3 21. Qxc3 Qe7 22. Qa5 Qd6 23. Rd3 Ke7 24. Bb3 Rhb8 25. Nc4 Qb4 26. Qc5+ Qxc5 27. dxc5 Rb5 28. Kb1 Rxc5 29. g4 Rd5 30. Rhd1 Rd8 31. Ne3 Rxd3 32. Rxd3 Be8 33. Kc2 Rxd3 34. Kxd3 Nd7 35. Kd4 e5+ 36. Kc3 Nc5 37. Bc4 Bd7 38. b4 Ne6 39. Bxe6 Bxe6 40. a4 Kd6 41. g5 Bd5 42. Ng4 f5 43. Nf6 Ke7 44. Nxh7 Kf7 45. Nf6 Bxf3 46. Nd7 Bd5 47. Nxe5+ Kg8 48. Nxg6 Kh7 49. Nf4 Be4 50. Kd4 Bc2 51. a5 Be4 52. Kc5 1-0

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2015.12.12"]
[Round "3"]
[White "Ludwig, David A"]
[Black "Young, Joseph"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "1871"]
[BlackElo "1856"]
[PlyCount "42"]
[EventDate "2015.12.12"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. b3 Nc6 2. Bb2 d5 3. e3 Nf6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Bd6 7. d4 Ne4 8. Nbd2 Qf6 9. c4 Qh6 10. c5 Nxd2 11. cxd6 Nxf1 12. Qxf1 cxd6 13. Bb5 Bxf3 14. Bxc6+ bxc6 15. gxf3 0-0 16. Ba3 Qg5+ 17. Kh1 Rad8 18. Qa6 Qh5 19. Qxc6 Qxf3+ 20. Kg1 h5 21. Bxd6 Rfe8 0-1

[Event "Edmonton WBX tt"]
[Site "Edmonton"]
[Date "2015.12.12"]
[Round "2"]
[White "Yao, David"]
[Black "Ludwig, David A"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "1523"]
[BlackElo "1871"]
[PlyCount "69"]
[EventDate "2015.12.12"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. Nf3 f5 2. d3 g6 3. g3 Nf6 4. Bg2 d6 5. Nbd2 Bg7 6. c3 e5 7. e4 fxe4 8. Nxe4 Nxe4 9. Qa4+ Nd7 10. Qxe4 Nf6 11. Qe2 0-0 12. 0-0 c6 13. h3 Bd7 14. Be3 Nh5 15. Qd2 Qf6 16. Bh6 Bxh3 17. Bxh3 Qxf3 18. Bg2 Bxh6 19. Qxh6 Qf6 20. Qe3 a6 21. Rad1 Rae8 22. a4 Re7 23. Qe2 Qe6 24. Rfe1 Rfe8 25. Qc2 Qf6 26. Qd2 Kg7 27. Re3 d5 28. Bf3 Qg5 29. Bxh5 Qxh5 30. Rde1 Qg5 31. Qc2 Qf6 32. R3e2 Qf5 33. Re3 Qd7 34. R3e2 c5 35. c4 1/2-1/2

[Event "WBX-Tch"]
[Site "Edmonton"]
[Date "2014.12.14"]
[Round "4.1"]
[White "Ludwig, David A"]
[Black "Zeggelaar, Mike"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1808"]
[BlackElo "1924"]
[PlyCount "97"]
[EventDate "2014.12.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 Nf6 3. e3 Bf5 4. Nf3 h6 5. Be2 e6 6. 0-0 Bd6 7. c4 c6 8. Nc3 0-0 9. cxd5 exd5 10. d3 Bc7 11. Ba3 Re8 12. Rc1 Nbd7 13. Na4 Rc8 14. Nc5 Nxc5 15. Bxc5 b6 16. Nd4 Bd7 17. Ba3 c5 18. Nf3 Bg4 19. Nd2 Qd6 20. g3 Bh3 21. Re1 Qe6 22. Bf1 Bxf1 23. Nxf1 Nh7 24. Qf3 Ng5 25. Qg2 Qf5 26. f4 Nh7 27. e4 dxe4 28. dxe4 Qd7 29. Rcd1 Qc6 30. e5 Qxg2+ 31. Kxg2 Red8 32. Ne3 Rxd1 33. Rxd1 Rd8 34. Rxd8+ Bxd8 35. b4 cxb4 36. Bxb4 Nf8 37. Kf3 Nd7 38. Ke4 a5 39. Bd6 b5 40. Kd5 Nb6+ 41. Kc5 b4 42. Kb5 h5 43. f5 Nc8 44. Bc5 Kh7 45. Nd5 g6 46. e6 gxf5 47. e7 Nxe7 48. Bxe7 Bxe7 49. Nxe7 1-0

[Event "WBX-Tch"]
[Site "Edmonton"]
[Date "2014.12.13"]
[Round "3.2"]
[White "Brazeau, Robert Warne"]
[Black "Ludwig, David A"]
[Result "0-1"]
[ECO "A87"]
[WhiteElo "1849"]
[BlackElo "1808"]
[PlyCount "84"]
[EventDate "2014.12.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nf6 5. 0-0 0-0 6. c4 d6 7. Nc3 Qe8 8. b3 c5 9. Nb5 Na6 10. d5 Nxd5 11. Qxd5+ e6 12. Qxd6 Bxa1 13. Ba3 Bf6 14. Nc7 Nxc7 15. Qxc7 Rf7 16. Qf4 e5 17. Qe3 e4 18. Bxc5 Qd8 19. Ne1 b6 20. Bb4 a5 21. Bc3 a4 22. Bxf6 Qxf6 23. f3 exf3 24. Bxf3 Bb7 25. Bxb7 Rxb7 26. Qf3 Qe7 27. Nd3 axb3 28. axb3 Re8 29. Qd5+ Qf7 30. Qg2 Rbe7 31. Rf2 Qf6 32. g4 Qd4 33. Kh1 fxg4 34. Rf4 Re4 35. Qxg4 Rxf4 36. Qxf4 Qxf4 37. Nxf4 Re4 38. Nd5 Rxe2 39. Nxb6 Rb2 40. c5 Rxb3 41. Kg2 Kf7 42. Nd5 Rb5 0-1

[Event "WBX-Tch"]
[Site "Edmonton"]
[Date "2014.12.13"]
[Round "2.2"]
[White "Hughey, Micah"]
[Black "Ludwig, David A"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "2212"]
[BlackElo "1808"]
[PlyCount "41"]
[EventDate "2014.12.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nf3 e6 9. Nc3 Be7 10. Be2 Qd7 11. d5 exd5 12. cxd5 Nb4 13. Nd4 0-0-0 14. Nxf5 Qxf5 15. Bg4 Nd3+ 16. Qxd3 Qxg4 17. 0-0 Qh5 18. Rac1 Kb8 19. d6 cxd6 20. Bxb6 axb6 21. Rf5 1/2-1/2

[Event "WBX-Tch"]
[Site "Edmonton"]
[Date "2014.12.13"]
[Round "1.4"]
[White "Ludwig, David A"]
[Black "Purewal, Sardul"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1808"]
[BlackElo "1970"]
[PlyCount "76"]
[EventDate "2014.12.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 Nf6 3. e3 Bf5 4. f4 e6 5. Nf3 Nbd7 6. Be2 Bd6 7. 0-0 Bg4 8. Ne5 Bxe2 9. Qxe2 c6 10. Nxd7 Qxd7 11. d3 Qc7 12. Nd2 e5 13. fxe5 Bxe5 14. Bxe5 Qxe5 15. a4 0-0 16. Rae1 Rae8 17. Nf3 Qh5 18. h3 Re7 19. Qf2 Nd7 20. Qh4 Qxh4 21. Nxh4 g6 22. Re2 f5 23. Rfe1 Nf6 24. Nf3 Rfe8 25. Kf2 c5 26. c4 Rd8 27. cxd5 Nxd5 28. d4 Nc3 29. Rc2 Ne4+ 30. Kf1 b6 31. dxc5 bxc5 32. Rb1 a5 33. Ke1 f4 34. Nd2 Nxd2 35. Rxd2 Rxe3+ 36. Kd1 Rxd2+ 37. Kxd2 Rg3 38. Rf1 g5 0-1

[Event "Canadian op"]
[Site "Edmonton"]
[Date "2009.07.19"]
[Round "9"]
[White "Farine, Jonathan"]
[Black "Ludwig, David A"]
[Result "1-0"]
[ECO "B02"]
[BlackElo "1680"]
[PlyCount "71"]
[EventDate "2009.07.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 e6 5. Bxd5 exd5 6. Qe2+ Be7 7. Qe5 Be6 8. Qxg7 Bf6 9. Qg3 Qe7 10. d3 Nc6 11. Bf4 Nd4 12. 0-0-0 0-0-0 13. Qe3 Rhe8 14. Kb1 Qb4 15. a3 Qb6 16. Qd2 Be7 17. Ka1 Rg8 18. g3 Bg4 19. Re1 Bf6 20. Be3 c5 21. Bxd4 Bxd4 22. h3 Be6 23. Nf3 Bf6 24. h4 Qa5 25. Ng5 Bxc3 26. Qxc3 Qxc3 27. bxc3 Rd6 28. Nxh7 Rg4 29. Ng5 Ra4 30. Nxe6 fxe6 31. Kb2 Rb6+ 32. Ka2 Rba6 33. Kb2 Rb6+ 34. Kc1 Rxa3 35. h5 Ra2 36. Kd2 1-0

[Event "Canadian op"]
[Site "Edmonton"]
[Date "2009.07.18"]
[Round "8"]
[White "Ludwig, David A"]
[Black "Razzaq, Ali"]
[Result "1/2-1/2"]
[ECO "D26"]
[WhiteElo "1680"]
[BlackElo "1859"]
[PlyCount "47"]
[EventDate "2009.07.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. c4 c6 2. e4 d5 3. cxd5 cxd5 4. exd5 Nf6 5. Nc3 Nxd5 6. Bc4 Nf6 7. d4 e6 8. Nf3 Bb4 9. 0-0 Bxc3 10. bxc3 Nbd7 11. Ba3 Nb6 12. Bb3 Nbd5 13. c4 Ne7 14. Re1 0-0 15. d5 Re8 16. dxe6 Bxe6 17. Qxd8 Raxd8 18. Ba4 Nc6 19. Bxc6 bxc6 20. Ne5 Rd2 21. Nxc6 Bxc4 22. Rxe8+ Nxe8 23. Nxa7 Rxa2 24. Rxa2 1/2-1/2

[Event "Canadian op"]
[Site "Edmonton"]
[Date "2009.07.15"]
[Round "5.71"]
[White "Shanker, Raman"]
[Black "Ludwig, David A"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "1839"]
[BlackElo "1680"]
[PlyCount "54"]
[EventDate "2009.07.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[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 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 d5 6. e3 0-0 7. Nc3 b6 8. cxd5 exd5 9. Bd3 Re8 10. 0-0 Bb7 11. Rac1 Ne4 12. Qc2 a6 13. Na4 Nc6 14. a3 Rc8 15. b4 Ne7 16. Ne5 Nf5 17. Nc6 Bxc6 18. Qxc6 Re6 19. Qc2 Qg5 20. Bxe4 dxe4 21. f4 exf3 22. Rxf3 Nxe3 23. Qd2 Qe7 24. Nxb6 Re8 25. Na4 Nd5 26. Nc5 Re2 27. Qd3 Qg5 0-1

[Event "Canadian op"]
[Site "Edmonton"]
[Date "2009.07.14"]
[Round "4.88"]
[White "Bansal, Prabjeet"]
[Black "Ludwig, David A"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "1394"]
[BlackElo "1680"]
[PlyCount "60"]
[EventDate "2009.07.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. d3 e5 3. Nf3 Nc6 4. b3 Bc5 5. h3 d6 6. Bb2 0-0 7. Be2 h6 8. 0-0 Be6 9. Nc3 a6 10. Na4 Ba7 11. c4 Ne7 12. d4 exd4 13. Nxd4 Nxe4 14. Bf3 d5 15. Bxe4 dxe4 16. Nxe6 fxe6 17. Qg4 Nf5 18. Qxe4 Qe7 19. Kh1 Bxf2 20. Be5 Ng3+ 21. Bxg3 Bxg3 22. Qxb7 Be5 23. Rae1 Qh4 24. Qxa8 Rxa8 25. Rxe5 Rd8 26. Rxe6 Rd2 27. Rg6 Rxa2 28. Rf3 Qd4 29. Rfg3 Ra1+ 30. Kh2 Qg1# 0-1

[Event "Canadian op"]
[Site "Edmonton"]
[Date "2009.07.13"]
[Round "3.80"]
[White "Ludwig, David A"]
[Black "Mendryk, Wayne"]
[Result "0-1"]
[ECO "A53"]
[WhiteElo "1680"]
[BlackElo "1438"]
[PlyCount "42"]
[EventDate "2009.07.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 Be7 4. Bg2 c6 5. d4 exd4 6. Qxd4 d6 7. e4 0-0 8. Nge2 Nbd7 9. Bf4 Ne5 10. Bxe5 c5 11. Qd2 dxe5 12. Nd5 Nxd5 13. exd5 Bg5 14. Qc2 g6 15. 0-0 Bf5 16. Be4 Bh3 17. Rfd1 f5 18. Bh1 Qd6 19. Nc3 a6 20. a4 Rf7 21. f3 Be3+ 0-1

[Event "Canadian op"]
[Site "Edmonton"]
[Date "2009.07.12"]
[Round "2"]
[White "Vanheirzeele, Daniel"]
[Black "Ludwig, David A"]
[Result "1-0"]
[ECO "A86"]
[WhiteElo "2137"]
[BlackElo "1680"]
[PlyCount "41"]
[EventDate "2009.07.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. d5 g6 5. c4 Bg7 6. Nc3 0-0 7. Nh3 a5 8. 0-0 Na6 9. Be3 Bd7 10. Nf4 c6 11. h4 Nc7 12. Na4 e5 13. dxe6 Bxe6 14. Qb3 c5 15. Rad1 Qe7 16. Nxe6 Nxe6 17. Qxb7 Qxb7 18. Bxb7 Rab8 19. Bg2 Rfd8 20. b3 Kf8 21. Bd2 1-0

[Event "Canadian op"]
[Site "Edmonton"]
[Date "2009.07.11"]
[Round "1.42"]
[White "Ludwig, David A"]
[Black "Moura, Eduardo Henrique B"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "1680"]
[BlackElo "2091"]
[PlyCount "90"]
[EventDate "2009.07.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 e6 2. e4 d5 3. cxd5 exd5 4. exd5 Nf6 5. Nc3 Nxd5 6. Bc4 Nxc3 7. bxc3 Be7 8. Rb1 0-0 9. Nf3 b6 10. 0-0 Ba6 11. Bxa6 Nxa6 12. Re1 Bf6 13. Qe2 Nc5 14. d4 Nb7 15. Ba3 Re8 16. Qd2 Qd5 17. Rxe8+ Rxe8 18. Re1 Re6 19. Rxe6 fxe6 20. Qe2 Na5 21. Bc1 Nc4 22. h3 b5 23. Bf4 c6 24. Nd2 Nxd2 25. Qxd2 a5 26. Qe2 Kf7 27. Qc2 Qf5 28. Qxf5 exf5 29. Kf1 Ke6 30. Ke2 Kd5 31. Kd3 g6 32. f3 a4 33. Be3 Be7 34. Bf2 Bd6 35. Be3 Bg3 36. Bc1 Bd6 37. Be3 Ba3 38. Bd2 Bb2 39. Be3 Ba3 40. Bd2 c5 41. dxc5 Bxc5 42. Bf4 Bg1 43. Bd2 Kc5 44. Be1 Kd5 45. Bd2 Bc5 1/2-1/2

[Event "ECC Halloween op"]
[Site "Edmonton"]
[Date "2003.10.02"]
[Round "1"]
[White "Ludwig, David A"]
[Black "Hughey, Micah"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "1675"]
[BlackElo "2066"]
[PlyCount "64"]
[EventDate "2003.10.02"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. cxd5 exd5 4. g3 c5 5. Bg2 Nc6 6. 0-0 Nf6 7. d3 Be7 8. b3 0-0 9. Bb2 Bg4 10. Ne5 Nxe5 11. Bxe5 Qd7 12. Nc3 Bh3 13. f3 d4 14. Bxf6 Bxf6 15. Ne4 Be7 16. f4 Bg4 17. Qe1 Rfe8 18. Nf2 Be6 19. Ne4 Rac8 20. Qf2 g6 21. Nd2 b5 22. Nf3 Bf6 23. Rad1 Bg4 24. Kh1 Re3 25. Rd2 Rce8 26. Ng1 Qe6 27. f5 gxf5 28. h3 Bxe2 29. Nxe2 Rxe2 30. Rxe2 Qxe2 31. Qxf5 Re6 32. Be4 c4 1/2-1/2

[Event "ECC Summer Swiss"]
[Site "Edmonton"]
[Date "2003.07.24"]
[Round "4"]
[White "Ludwig, David A"]
[Black "White, Daniel"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "1702"]
[BlackElo "1413"]
[PlyCount "80"]
[EventDate "2003.07.03"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 c6 4. e4 d6 5. d4 Nd7 6. Bg2 e5 7. d5 Qb6 8. Nge2 Ngf6 9. dxc6 Qxc6 10. Nb5 Bf8 11. b3 a6 12. Nbc3 Nc5 13. f3 Be6 14. Nd5 Bxd5 15. exd5 Qb6 16. Bb2 Be7 17. Qd2 a5 18. f4 Nce4 19. Bxe4 Nxe4 20. Qc2 Qf2+ 21. Kd1 Qf3 22. Re1 Nf2+ 23. Kd2 Ne4+ 24. Kd1 Qe3 25. Rf1 Nf2+ 26. Rxf2 Qxf2 27. fxe5 Qf1+ 28. Kd2 Bg5+ 29. Kc3 Qf3+ 30. Qd3 Qxd3+ 31. Kxd3 dxe5 32. Bxe5 0-0 33. Nc3 Rfe8 34. Bd4 f5 35. Nb5 Rad8 36. Bb6 Rd7 37. Bxa5 Re3+ 38. Kd4 Re4+ 39. Kd3 Re3+ 40. Kd4 Re4+ 1/2-1/2

[Event "Edmonton-ch"]
[Site "Edmonton"]
[Date "2001.01.25"]
[Round "2"]
[White "Gardner, Robert"]
[Black "Ludwig, David A"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2375"]
[BlackElo "1768"]
[PlyCount "43"]
[EventDate "2001.01.04"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "CAN"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 f5 2. Qd3 d5 3. g4 fxg4 4. h3 Nf6 5. Bg5 Qd6 6. Nc3 c6 7. 0-0-0 Na6 8. hxg4 Nxg4 9. Nh3 Nb4 10. Qd2 Bf5 11. f3 Nf6 12. e4 dxe4 13. fxe4 Nxe4 14. Nxe4 Bxe4 15. Bf4 Nxa2+ 16. Kb1 Bxh1 17. Bxd6 exd6 18. Re1+ Kd7 19. Kxa2 Be7 20. Nf4 g5 21. Bh3+ Kc7 22. Ne6+ 1-0

[Event "Edmonton CC"]
[Site "Edmonton"]
[Date "2000.??.??"]
[Round "5"]
[White "Ludwig, David A"]
[Black "Ottosen, David"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "1725"]
[BlackElo "2120"]
[PlyCount "66"]
[EventDate "2000.??.??"]
[EventType "game"]
[EventRounds "5"]
[EventCountry "CAN"]
[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 f6 7. 0-0 Nc6 8. a3 Bc5 9. e4 Nde7 10. d3 Qd7 11. Qc2 Bb6 12. Na4 h5 13. Nxb6 cxb6 14. h4 0-0-0 15. Rd1 Kb8 16. b4 Bh3 17. Bb2 Bxg2 18. Kxg2 g5 19. hxg5 h4 20. Rh1 Ng6 21. Nxh4 Nxh4+ 22. Rxh4 Rxh4 23. gxh4 Qg4+ 24. Kf1 fxg5 25. Qe2 Qxh4 26. Qf3 g4 27. Qg3 Qxg3 28. fxg3 Rxd3 29. Re1 Rxg3 30. Re2 Kc7 31. Ke1 Nd4 32. Bxd4 exd4 33. Kd2 Rxa3 0-1

