[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2012.05.03"]
[Round "7"]
[White "Paterson, Jim"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1822"]
[BlackElo "2009"]
[PlyCount "67"]
[EventDate "2012.03.22"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. exd5 cxd5 4. d4 Nc6 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Nf6 8. Bf4 Be7 9. Ne5 Bxe2 10. Nxe2 Qb6 11. Nxc6 Qxc6 12. c3 0-0 13. Ng3 b5 14. Qe2 Rfc8 15. Rfc1 a5 16. a3 Nd7 17. Nh5 g6 18. Ng3 Nb6 19. Bh6 Nc4 20. f4 Bf6 21. Bg5 Bg7 22. Re1 b4 23. axb4 axb4 24. Be7 bxc3 25. bxc3 Nb6 26. Bb4 Ra4 27. Qd2 Nc4 28. Qd1 Rca8 29. Rxa4 Qxa4 30. Qxa4 Rxa4 31. Ne2 Nd2 32. Rd1 Nc4 33. Kf2 Ra2 34. Kf3 1/2-1/2

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2012.04.26"]
[Round "6"]
[White "Krupka, David"]
[Black "Picana, Andrew"]
[Result "0-1"]
[ECO "A60"]
[WhiteElo "2009"]
[BlackElo "2044"]
[PlyCount "76"]
[EventDate "2012.03.22"]
[EventType "tourn"]
[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 c5 3. e3 e6 4. Nf3 Be7 5. d5 exd5 6. cxd5 d6 7. Nc3 0-0 8. Be2 Bg4 9. 0-0 Nbd7 10. b3 a6 11. a4 Re8 12. Bb2 Bf8 13. Qc2 Bh5 14. Rad1 Rb8 15. Rfe1 h6 16. Nd2 Bxe2 17. Rxe2 b5 18. axb5 axb5 19. e4 Ne5 20. Rde1 c4 21. bxc4 bxc4 22. Ba1 Qc7 23. h3 Nh5 24. g3 g5 25. Kg2 Bg7 26. Rf1 Nd3 27. Nf3 Qc8 28. Ng1 g4 29. h4 Nf6 30. Rb1 Nd7 31. Rxb8 Qxb8 32. Qa4 N7e5 33. Ra2 Nc5 34. Qd1 Qb3 35. Rd2 Qxd1 36. Rxd1 Ned3 37. Nb5 Nxe4 38. Bxg7 Kxg7 0-1

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2012.04.19"]
[Round "5"]
[White "Armstrong, Robert J"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "A15"]
[WhiteElo "1683"]
[BlackElo "2009"]
[PlyCount "88"]
[EventDate "2012.03.22"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. g3 Nf6 2. Bg2 g6 3. c4 Bg7 4. Qb3 c6 5. Nc3 0-0 6. d4 d6 7. Bg5 Nbd7 8. h4 Rb8 9. a4 h6 10. Bd2 a6 11. e3 e5 12. Nge2 Qe7 13. d5 Nc5 14. Qc2 cxd5 15. Nxd5 Nxd5 16. Bxd5 Bf5 17. e4 Bg4 18. b4 Ne6 19. Be3 Nc7 20. Nc3 Rfc8 21. Ba7 Ra8 22. Bb6 Nxd5 23. Nxd5 Qe6 24. Rc1 Qd7 25. Be3 Bf3 26. Nb6 Qg4 27. Rh2 Bxe4 28. Qd2 Kh7 29. Nxa8 Rxa8 30. Qxd6 Bf8 31. Qd2 Be7 32. Bb6 Rc8 33. c5 Bc6 34. a5 Bb5 35. Rb1 Rc6 36. Qe3 Rf6 37. Rb3 Qc4 38. Rc3 Qxb4 39. Kd2 e4 40. f4 exf3 41. Rf2 Re6 42. Qf4 Re4 43. Qxe4 Qxe4 44. Rcxf3 f5 1-0

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2012.04.12"]
[Round "4"]
[White "Lin, Tony"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "1901"]
[BlackElo "2009"]
[PlyCount "102"]
[EventDate "2012.03.22"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. a3 Nc6 5. e3 Be6 6. Nf3 dxe3 7. Qxd8+ Rxd8 8. Bxe3 Nge7 9. Nc3 a6 10. Be2 Ng6 11. Ng5 Ngxe5 12. Nxe6 fxe6 13. f4 Nd3+ 14. Bxd3 Rxd3 15. Ke2 Rd8 16. Rad1 Be7 17. Rxd8+ Kxd8 18. Ne4 Rf8 19. g3 b6 20. h4 h5 21. Ng5 Bxg5 22. hxg5 g6 23. b4 Ne7 24. a4 Nf5 25. Bf2 Re8 26. Kf3 e5 27. Re1 exf4 28. Rd1+ Kc8 29. gxf4 Re6 30. c5 b5 31. axb5 axb5 32. Ra1 Kb7 33. Ra5 c6 34. Ra1 Re7 35. Rd1 Kc8 36. Rd2 Kc7 37. Bd4 Rd7 38. Be5+ Kc8 39. Ra2 Kb7 40. Ra3 Rd1 41. Rb3 Rd2 42. Bf6 Rd1 43. Ke2 Rd4 44. Be5 Rd5 45. Kf2 Rd2+ 46. Kf3 Rd5 47. Rb2 Rd3+ 48. Kf2 Rd5 49. Re2 Kc8 50. Bf6 Kd7 51. Ra2 Rd3 1-0

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2012.04.05"]
[Round "3"]
[White "Krupka, David"]
[Black "Southam, David"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "2009"]
[BlackElo "2222"]
[PlyCount "68"]
[EventDate "2012.03.22"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 c6 3. c4 e6 4. cxd5 exd5 5. Qc2 Bd6 6. Bg5 Ne7 7. e3 Bf5 8. Bd3 Qd7 9. Nc3 Bxd3 10. Qxd3 0-0 11. 0-0 Ng6 12. Nh4 Qg4 13. Qf5 Qh5 14. Bf6 Qh6 15. Qg5 Qxg5 16. Bxg5 Nxh4 17. Bxh4 f5 18. Bg3 Bxg3 19. hxg3 Nd7 20. Rfc1 a5 21. Na4 Kf7 22. Nc5 Nxc5 23. Rxc5 Ke6 24. Rb1 Kd6 25. Rbc1 Rfc8 26. Kf1 b6 27. R5c2 c5 28. b3 Rc7 29. a4 Rac8 30. Ke2 h6 31. Kd3 Re8 32. Rh1 Ke6 33. Rhc1 Rec8 34. Rc3 Kd6 0-1

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2012.03.29"]
[Round "2"]
[White "Manalo, Pepin"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1857"]
[BlackElo "2009"]
[PlyCount "78"]
[EventDate "2012.03.22"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Bd6 7. Be3 0-0 8. Bd3 Re8 9. Qd2 a5 10. 0-0-0 Be6 11. c4 Nd7 12. Qc2 Nf8 13. h3 b5 14. c5 Be7 15. Be4 Bd5 16. Bxd5 Qxd5 17. b3 Ne6 18. Rhe1 Qd7 19. Qf5 g6 20. Qe4 Nc7 21. Qd3 b4 22. Qc4 Nd5 23. Rd3 a4 24. Kd2 Bf8 25. Rc1 Qe7 26. g3 Qe4 27. Nh2 Qg2 28. Nf1 f5 29. Re1 f4 30. gxf4 Nxf4 31. Kd1 Qf3+ 32. Kc2 Nxd3 33. Qxd3 axb3+ 34. Qxb3 Ra3 35. Qxb4 Rxa2+ 36. Kb3 Qd5+ 37. Kc3 Rea8 38. Nd2 R8a3+ 39. Nb3 Ra4 0-1

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2012.03.22"]
[Round "1"]
[White "Krupka, David"]
[Black "Posaratnanathan, Juliaan"]
[Result "0-1"]
[ECO "E44"]
[WhiteElo "2009"]
[BlackElo "1962"]
[PlyCount "60"]
[EventDate "2012.03.22"]
[EventType "tourn"]
[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. Nc3 Bb4 4. e3 d5 5. Nge2 0-0 6. a3 Bxc3+ 7. Nxc3 b6 8. Bd3 Bb7 9. 0-0 Nbd7 10. b4 c5 11. cxd5 exd5 12. bxc5 bxc5 13. Rb1 Rb8 14. a4 cxd4 15. exd4 Nb6 16. a5 Nbd7 17. Bf4 Rc8 18. Rxb7 Rxc3 19. Rxa7 Re8 20. Bb5 Re4 21. g3 h6 22. Qd2 Rb3 23. Bd3 Re6 24. Qc2 Rb4 25. Rc7 Nf8 26. Qc5 Rb8 27. Rc1 Re8 28. Bb5 Ne6 29. Rc8 Rxc8 30. Qxc8 Qxc8 0-1

[Event "Scarborough CC Winter End"]
[Site "Toronto"]
[Date "2012.03.01"]
[Round "3"]
[White "Sharpe, Sam"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1998"]
[BlackElo "2015"]
[PlyCount "86"]
[EventDate "2012.02.16"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 0-0 5. e4 d6 6. Nge2 c5 7. 0-0 Nc6 8. d3 Rb8 9. f4 e6 10. h3 a6 11. g4 Bd7 12. Ng3 Nd4 13. f5 Ne8 14. Nce2 b5 15. Rb1 Qa5 16. a3 bxc4 17. dxc4 Ba4 18. Qd3 Bc2 19. Qd2 Qxd2 20. Bxd2 Bxb1 21. Rxb1 Nxe2+ 22. Nxe2 Rxb2 23. Rxb2 Bxb2 24. a4 Nf6 25. Nf4 e5 26. g5 exf4 27. gxf6 g5 28. e5 dxe5 29. Bb7 Rd8 30. Be1 Rd6 31. a5 Rxf6 32. Kf2 Rd6 33. Kf3 h5 34. Bd5 Kg7 35. Ke4 g4 36. hxg4 hxg4 37. Bh4 f6 38. Bf2 Ba3 39. Be1 g3 40. Kf3 Bb4 41. Ke2 Bxe1 42. Kxe1 Rxd5 43. cxd5 Kf7 0-1

[Event "Scarborough CC Winter End"]
[Site "Toronto"]
[Date "2012.02.23"]
[Round "2"]
[White "Krupka, David"]
[Black "Huston, Scott"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2015"]
[BlackElo "1804"]
[PlyCount "65"]
[EventDate "2012.02.16"]
[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 c5 2. c3 d5 3. e5 d4 4. f4 Nc6 5. d3 Bf5 6. c4 b5 7. cxb5 Qa5+ 8. Bd2 Qxb5 9. Na3 Qxb2 10. Nc4 Qb5 11. Rb1 Qa6 12. a3 e6 13. g4 Bg6 14. Qf3 f5 15. g5 Be7 16. h4 Kd7 17. h5 Be8 18. Bg2 Kc7 19. Ne2 Rb8 20. 0-0 Bd8 21. Rxb8 Nxb8 22. Ba5+ Kd7 23. Bxd8 Kxd8 24. Qa8 Qb5 25. Qxa7 Nc6 26. Qxg7 Nce7 27. Qxh8 Bxh5 28. Ng3 Bg6 29. Qg7 Qb3 30. Qf8+ Be8 31. Nd6 Qa4 32. Rb1 Ng6 33. Qxg8 1-0

[Event "Scarborough CC Winter End"]
[Site "Toronto"]
[Date "2012.02.16"]
[Round "1"]
[White "Ugodnikov, Arkadiy"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "1781"]
[BlackElo "2015"]
[PlyCount "78"]
[EventDate "2012.02.16"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. 0-0 Bg7 8. h3 0-0 9. Bg5 h6 10. Be3 Kh7 11. Bc2 d5 12. Bc5 Re8 13. Nbd2 b6 14. Ba3 d4 15. cxd4 exd4 16. Bb3 Qd7 17. Rc1 Na5 18. Ba4 b5 19. Bc2 Nc6 20. Bc5 Nh5 21. Nh2 Nf4 22. Ndf3 Nxg2 23. Kxg2 Qxh3+ 24. Kg1 Be5 25. Nxe5 Rxe5 26. f4 Rxc5 27. Bb3 Rh5 28. Qd2 Qd7 29. Bd1 Rh4 30. Qf2 Rxh2 31. Qxh2 Nb4 32. f5 c6 33. fxg6+ fxg6 34. Be2 Nxa2 35. Rce1 Nb4 36. Rf4 Qe7 37. Ref1 Be6 38. Rh4 Qg7 39. Qd6 Nc2 1-0

[Event "Scarborough CC Jack Frost"]
[Site "Toronto"]
[Date "2012.02.02"]
[Round "5"]
[White "Krupka, David"]
[Black "Huston, Scott"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2028"]
[BlackElo "1784"]
[PlyCount "51"]
[EventDate "2012.01.05"]
[EventType "swiss"]
[EventRounds "6"]
[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. Nc3 Bb4 4. Bg5 b6 5. e3 Bb7 6. Nf3 d5 7. Qa4+ Nc6 8. Ne5 Qd6 9. Bf4 Nh5 10. c5 bxc5 11. Bb5 0-0 12. Bxc6 Bxc6 13. Qxc6 cxd4 14. Qxd6 cxd6 15. Nc6 Bxc3+ 16. bxc3 Nxf4 17. exf4 dxc3 18. Rc1 Rfe8 19. Rxc3 Rac8 20. Ne7+ Kf8 21. Nxc8 d4 22. Rc7 e5 23. Nxd6 Re6 24. fxe5 Rxe5+ 25. Kd2 d3 26. Re1 1-0

[Event "Scarborough CC Jack Frost"]
[Site "Toronto"]
[Date "2012.01.26"]
[Round "4"]
[White "Krupka, David"]
[Black "Triefeldt, Jack"]
[Result "1/2-1/2"]
[ECO "E85"]
[WhiteElo "2028"]
[BlackElo "1747"]
[PlyCount "59"]
[EventDate "2012.01.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CAN"]
[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 0-0 6. Be3 e5 7. Nge2 Nbd7 8. Qd2 c5 9. d5 Nb6 10. b3 Ne8 11. g3 f5 12. Bg2 a6 13. 0-0 Nf6 14. Rae1 Qe7 15. Kh1 fxe4 16. Nxe4 Nxe4 17. fxe4 Bg4 18. h3 Bxe2 19. Qxe2 Nd7 20. h4 Rxf1+ 21. Rxf1 Rf8 22. Bh3 Rxf1+ 23. Qxf1 Nf8 24. Bg5 Qe8 25. Qc1 b6 26. Qa3 a5 27. Qa4 Qf7 28. Kg2 h6 29. Bd8 Bf6 30. Bxb6 1/2-1/2

[Event "Scarborough CC Jack Frost"]
[Site "Toronto"]
[Date "2012.01.12"]
[Round "2"]
[White "Ugodnikov, Arkadiy"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "C82"]
[WhiteElo "1820"]
[BlackElo "2028"]
[PlyCount "78"]
[EventDate "2012.01.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Nxe4 7. d4 d5 8. dxe5 Be6 9. c3 Bc5 10. Bf4 0-0 11. Nbd2 Nxd2 12. Qxd2 Ne7 13. Rad1 c6 14. Bc2 Bg4 15. Bd3 Bf5 16. Qe2 Qd7 17. Bxf5 Qxf5 18. Bg3 Qg4 19. Nd4 Qxe2 20. Nxe2 Bb6 21. Rfe1 Rfe8 22. Nd4 c5 23. Nf3 Rad8 24. Re2 h6 25. Red2 Rd7 26. Re2 Ng6 27. Nh4 Nxh4 28. Bxh4 g5 29. Bg3 Kf8 30. f4 gxf4 31. Bxf4 Re6 32. Kf1 d4 33. cxd4 Rxd4 34. Rxd4 cxd4 35. Rd2 Kg7 36. Bg3 Kg6 37. Bf2 Rxe5 38. Bxd4 Bxd4 39. Rxd4 Re6 1/2-1/2

[Event "Canadian op 48th"]
[Site "Toronto"]
[Date "2011.07.15"]
[Round "7"]
[White "Krupka, David"]
[Black "Baumgartner, Christopher"]
[Result "1-0"]
[ECO "A52"]
[WhiteElo "2019"]
[BlackElo "1904"]
[PlyCount "37"]
[EventDate "2011.07.09"]
[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 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. e3 Ngxe5 6. Be2 g6 7. Nc3 Bg7 8. 0-0 0-0 9. Nd4 b6 10. Nd5 Bb7 11. Nb5 Rc8 12. f4 a6 13. Nbc3 Nxc4 14. Bxc4 b5 15. Be2 Re8 16. Bf3 b4 17. Nxb4 Nxb4 18. Bxb7 Rb8 19. Bf3 1-0

[Event "Canadian op 48th"]
[Site "Toronto"]
[Date "2011.07.14"]
[Round "6"]
[White "Fan, Brendan"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2097"]
[BlackElo "2019"]
[PlyCount "81"]
[EventDate "2011.07.09"]
[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 c6 2. d4 d5 3. f3 e6 4. Nc3 Nf6 5. Be3 Qb6 6. Qc1 Bb4 7. Bd3 c5 8. dxc5 Bxc5 9. Bxc5 Qxc5 10. Qg5 Kf8 11. exd5 h6 12. Qf4 Nxd5 13. Nxd5 Qxd5 14. Qb4+ Kg8 15. Qe7 g6 16. Be4 Qa5+ 17. b4 Qg5 18. Qxg5 hxg5 19. 0-0-0 f5 20. Rd8+ Kg7 21. Rxc8 Rxc8 22. Bxb7 Nc6 23. Bxa8 Rxa8 24. c3 Rc8 25. Kb2 Rd8 26. Kc2 Kf6 27. Ne2 Rc8 28. a3 e5 29. Rd1 Ke6 30. Kb3 Ne7 31. c4 a6 32. a4 g4 33. fxg4 f4 34. Nc3 Nc6 35. c5 Nd4+ 36. Kc4 Ke7 37. Nd5+ Ke6 38. Nxf4+ Kf7 39. Nd3 Nc2 40. Kc3 Ne3 41. Re1 1-0

[Event "Canadian op 48th"]
[Site "Toronto"]
[Date "2011.07.13"]
[Round "5"]
[White "Krupka, David"]
[Black "Kagramanov, Dina"]
[Result "1/2-1/2"]
[ECO "D36"]
[BlackElo "2100"]
[PlyCount "99"]
[EventDate "2011.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 Nbd7 6. Nf3 0-0 7. cxd5 exd5 8. Bd3 c6 9. Qc2 Re8 10. 0-0 Nf8 11. Rab1 a5 12. Rfc1 Ng6 13. Ne5 Ne4 14. Bxe7 Qxe7 15. Nxg6 hxg6 16. Bxe4 dxe4 17. Na4 Qg5 18. Qc5 Qh4 19. Nb6 Ra6 20. Nxc8 Rxc8 21. Rc3 Rd8 22. Qe5 Rb6 23. Qxa5 Rb5 24. Qc7 Rh5 25. Qg3 Qf6 26. f4 exf3 27. Qxf3 Rf5 28. Qe2 Qe6 29. Qc4 Qe4 30. Qd3 Qh4 31. Rf1 Rh5 32. h3 Rdd5 33. Rf4 Qg3 34. Rf3 Qd6 35. Qf1 Qe6 36. a3 g5 37. g4 Rh6 38. b4 Qe7 39. Rc4 Re6 40. Qf2 Re4 41. Rc1 Rd6 42. Rf1 f6 43. Rc1 f5 44. Rxf5 Rxe3 45. Rf8+ Qxf8 46. Qxe3 Qf6 47. Qe8+ Kh7 48. Qh5+ Kg8 49. Qe8+ Kh7 50. Qh5+ 1/2-1/2

[Event "Canadian op 48th"]
[Site "Toronto"]
[Date "2011.07.12"]
[Round "4"]
[White "Day, Lawrence A"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "2262"]
[BlackElo "2019"]
[PlyCount "113"]
[EventDate "2011.07.09"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Bd6 6. d4 Bg4 7. dxe5 Bxf3 8. Qxf3 Bxe5 9. Bd2 Qf6 10. Qh3 Qe6 11. Qe3 Nf6 12. 0-0-0 0-0 13. f3 Bxc3 14. Qxc3 Qxa2 15. b3 Qa3+ 16. Kb1 a5 17. Be3 b6 18. Rd4 a4 19. Bc1 Qe7 20. Rxa4 Rxa4 21. bxa4 Qd7 22. Bb2 Ra8 23. Qb3 c5 24. Qb5 Qxb5 25. axb5 Rd8 26. Kc1 Ne8 27. Be5 f6 28. Bg3 Kf7 29. Re1 Rd4 30. c3 Rd3 31. Kc2 Rd8 32. Ra1 Ke6 33. Ra7 Kd7 34. Kb3 Nd6 35. Bxd6 Kxd6 36. Kc4 Rd7 37. f4 Ke6 38. Ra2 Rd1 39. g3 Rd7 40. Ra8 Rd2 41. Rc8 Rd7 42. g4 g5 43. fxg5 fxg5 44. Re8+ Kf7 45. Re5 h6 46. Rd5 Re7 47. Kd3 Ke6 48. Ke3 Rf7 49. Rd8 Rf1 50. Rh8 Ke5 51. Re8+ Kd6 52. e5+ Kd5 53. Re7 Re1+ 54. Kd3 c4+ 55. Kd2 Rxe5 56. Rxc7 Re6 57. h3 1/2-1/2

[Event "Canadian op 48th"]
[Site "Toronto"]
[Date "2011.07.11"]
[Round "3"]
[White "Krupka, David"]
[Black "Birarov, Vladimir"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2019"]
[BlackElo "2267"]
[PlyCount "130"]
[EventDate "2011.07.09"]
[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 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. c4 Be7 10. Bd3 0-0 11. 0-0 a6 12. Nc3 f5 13. f3 Nd7 14. Be3 Bg5 15. Qd2 Bxe3+ 16. Qxe3 Qf6 17. Rac1 e4 18. Be2 exf3 19. Bxf3 Ne5 20. b3 Bd7 21. Qd2 Rae8 22. Ne2 g5 23. Nd4 f4 24. Rce1 g4 25. Be4 Qh4 26. Ne6 Bxe6 27. dxe6 f3 28. g3 Qe7 29. Rd1 Rd8 30. Qd5 Kh8 31. Qxb7 Qxb7 32. Bxb7 Rfe8 33. Bd5 a5 34. Kf2 Kg7 35. Ke3 Kf6 36. Rd4 h5 37. h4 Ng6 38. Kd3 Rf8 39. Kc3 Ne7 40. Rf4+ Kg7 41. Kd2 Rxf4 42. gxf4 Kf6 43. Ke3 Rc8 44. Rd1 Rc5 45. Kf2 Nxd5 46. Rxd5 Kxe6 47. Rd3 a4 48. Kg3 axb3 49. axb3 Ra5 50. Rd2 Ra1 51. Rb2 Rc1 52. b4 Rxc4 53. b5 Rc7 54. b6 Rb7 55. Rb5 d5 56. f5+ Kxf5 57. Rxd5+ Ke4 58. Rxh5 Rxb6 59. Rg5 Rf6 60. Kf2 Kf4 61. Rg8 Rf5 62. Rg7 Re5 63. Rf7+ Rf5 64. Rg7 Rf8 65. Rg6 Ra8 0-1

[Event "Canadian op 48th"]
[Site "Toronto"]
[Date "2011.07.10"]
[Round "2"]
[White "Nasir, Pi"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1599"]
[BlackElo "2019"]
[PlyCount "100"]
[EventDate "2011.07.09"]
[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 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nc6 5. c3 Bg4 6. Be2 e6 7. 0-0 Bd6 8. Be3 Qc7 9. Nbd2 Nf6 10. Re1 0-0 11. Nf1 Ne4 12. N3d2 Bxe2 13. Qxe2 Nxd2 14. Bxd2 Rab8 15. Qg4 Rbe8 16. f4 f5 17. Qf3 Nb8 18. Re2 Qf7 19. Be3 Rc8 20. Bf2 Nd7 21. Bh4 Rc6 22. Rae1 Bb8 23. Ne3 Nb6 24. h3 Nc8 25. Nf1 h6 26. Nd2 Re8 27. Nb3 Nd6 28. Nc1 Ne4 29. Nd3 Rec8 30. Bg3 Bd6 31. Bh2 b5 32. a3 a5 33. g4 Qa7 34. Kh1 b4 35. axb4 axb4 36. cxb4 Qxd4 37. Bg1 Qf6 38. Bc5 Kh7 39. Rg1 Nxc5 40. bxc5 Bxc5 41. Rgg2 Bd6 42. g5 hxg5 43. fxg5 Qg6 44. h4 Rc4 45. h5 Rh4+ 46. Kg1 Qe8 47. g6+ Kg8 48. Rg5 Qd7 49. Qf2 Re4 50. Kg2 Qe7 0-1

[Event "Canadian op 48th"]
[Site "Toronto"]
[Date "2011.07.09"]
[Round "1"]
[White "Krupka, David"]
[Black "Plotkin, Victor"]
[Result "0-1"]
[ECO "D63"]
[WhiteElo "2019"]
[BlackElo "2411"]
[PlyCount "118"]
[EventDate "2011.07.09"]
[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. Nc3 d5 4. Bg5 Be7 5. e3 0-0 6. Nf3 a6 7. Rc1 Nbd7 8. Qc2 dxc4 9. Bxc4 b5 10. Bd3 h6 11. Bxf6 Nxf6 12. 0-0 Bb7 13. Ne4 Rc8 14. Nxf6+ Bxf6 15. Be4 Bxe4 16. Qxe4 c5 17. dxc5 Bxb2 18. Rc2 Bf6 19. Qb7 Qa5 20. Nd4 Rc7 21. Nb3 Rxb7 22. Nxa5 Rc7 23. c6 Rd8 24. Rfc1 Rd5 25. Nb3 b4 26. Rc5 Rd6 27. Kf1 Bc3 28. a3 Bb2 29. R1c2 bxa3 30. Ke2 Kf8 31. Nc1 Ke7 32. Na2 Rd5 33. R5c4 a5 34. Nc3 Rd8 35. Na2 Rb8 36. Rc5 Kd6 37. R5c4 Rb6 38. Rd2+ Ke7 39. Rdc2 Bf6 40. Kd2 Kd6 41. Nc3 Bxc3+ 42. R2xc3 Rb2+ 43. Kd3 a2 44. Rd4+ Ke7 45. Ra4 Rxf2 46. Rxa5 Rxg2 47. Rc2 Rxc2 48. Kxc2 Rxc6+ 49. Kd3 f5 50. Rxa2 Kf6 51. Ke2 g5 52. Kf2 e5 53. Kg3 h5 54. Ra8 h4+ 55. Kf3 g4+ 56. Kf2 Rc2+ 57. Kg1 h3 58. Kf1 Ke6 59. e4 fxe4 0-1

[Event "Scarborough CC Spring Into Summer"]
[Site "Toronto"]
[Date "2011.06.23"]
[Round "8"]
[White "Krupka, David"]
[Black "Casareno, Erwin"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "2019"]
[BlackElo "2164"]
[PlyCount "72"]
[EventDate "2011.04.28"]
[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 d6 2. c4 g6 3. Nc3 Bg7 4. g3 Nf6 5. Nf3 c6 6. Bg2 Qc7 7. Nd2 e5 8. d5 0-0 9. 0-0 Nbd7 10. e4 cxd5 11. cxd5 b6 12. Nb5 Qb8 13. Nc4 Ne8 14. Bg5 a6 15. Nc3 Qc7 16. Nd2 f6 17. Be3 f5 18. f3 Nef6 19. Rc1 Qd8 20. Nc4 Ne8 21. b4 Rb8 22. a4 Ndf6 23. h3 Nh5 24. Bf2 Bh6 25. Rc2 Neg7 26. a5 b5 27. Nb6 Qg5 28. Kh2 Kh8 29. h4 Qe7 30. g4 Bf4+ 31. Kg1 Ng3 32. Ne2 Qxh4 33. Nxf4 exf4 34. gxf5 gxf5 35. Qa1 fxe4 36. Rc7 Ne2# 0-1

[Event "Scarborough CC Spring Into Summer"]
[Site "Toronto"]
[Date "2011.06.09"]
[Round "6"]
[White "Krupka, David"]
[Black "Bzikot, Robert"]
[Result "1/2-1/2"]
[ECO "E85"]
[WhiteElo "2019"]
[BlackElo "1975"]
[PlyCount "67"]
[EventDate "2011.04.28"]
[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 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Qd2 e5 8. Nge2 Rb8 9. d5 Ne7 10. Bxa7 Ra8 11. Be3 Ne8 12. Nc1 f5 13. Be2 f4 14. Bf2 g5 15. Nd3 Ng6 16. c5 h5 17. b3 g4 18. 0-0-0 Rf7 19. Rhe1 Bd7 20. Kb1 Qb8 21. Nb2 Bf8 22. c6 Bc8 23. Bc4 Nf6 24. Rc1 Kh7 25. Rh1 Bh6 26. Qc2 Rg7 27. Rcg1 Ne7 28. cxb7 Qxb7 29. Be2 Bd7 30. Rc1 Ng6 31. Qd3 Rb8 32. Rc2 Be8 33. Be1 Nf8 34. Bf2 1/2-1/2

[Event "Scarborough CC Spring Into Summer"]
[Site "Toronto"]
[Date "2011.05.26"]
[Round "4"]
[White "Krupka, David"]
[Black "Southam, David"]
[Result "1/2-1/2"]
[ECO "E84"]
[WhiteElo "2019"]
[BlackElo "2101"]
[PlyCount "45"]
[EventDate "2011.04.28"]
[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 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Qd2 a6 8. Nge2 Rb8 9. Ng3 e5 10. dxe5 dxe5 11. Qxd8 Rxd8 12. Nd5 Nd4 13. Bxd4 Nxd5 14. Ba7 Ra8 15. cxd5 Rxa7 16. Bc4 Bf8 17. Rc1 Bd6 18. 0-0 Bd7 19. Ne2 Raa8 20. Bd3 Rf8 21. Rc2 Rac8 22. Rfc1 Kg7 23. Ng3 1/2-1/2

[Event "Scarborough CC Spring Into Summer"]
[Site "Toronto"]
[Date "2011.05.19"]
[Round "3"]
[White "Hall, John2222"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2200"]
[BlackElo "2019"]
[PlyCount "79"]
[EventDate "2011.04.28"]
[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 Nc6 2. Nf3 e5 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 bxc6 6. Bd3 Nf6 7. e5 Nd5 8. Qg4 Kf8 9. 0-0 Nb4 10. Bg5 Qe8 11. Nc3 d5 12. Qg3 Qe6 13. Na4 Nxd3 14. Qxd3 Bb6 15. Qa3+ Kg8 16. Nxb6 cxb6 17. f4 Qf5 18. Qd6 Qd7 19. Qxd7 Bxd7 20. f5 h6 21. Be7 Re8 22. f6 g6 23. Rad1 Be6 24. Rf4 Kh7 25. Ra4 a5 26. b4 axb4 27. Rxb4 b5 28. a4 bxa4 29. Rxa4 Ra8 30. Rda1 Rxa4 31. Rxa4 g5 32. Ra7 Rc8 33. Bd6 Kg6 34. Kf2 c5 35. Ra5 c4 36. Ke3 Kf5 37. Kd4 h5 38. Ra3 g4 39. Ra7 Kg6 40. c3 1/2-1/2

[Event "Scarborough CC Spring Into Summer"]
[Site "Toronto"]
[Date "2011.05.12"]
[Round "2"]
[White "Krupka, David"]
[Black "Posaratnanathan, Juliaan"]
[Result "1/2-1/2"]
[ECO "E44"]
[WhiteElo "2019"]
[BlackElo "1902"]
[PlyCount "50"]
[EventDate "2011.04.28"]
[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. Nc3 Bb4 4. e3 0-0 5. Nge2 b6 6. a3 Be7 7. e4 d6 8. f3 Nbd7 9. Ng3 Ba6 10. Be2 Re8 11. 0-0 Bf8 12. Bg5 h6 13. Be3 e5 14. d5 Bc8 15. b4 Nh7 16. Nf5 Ndf6 17. g4 Bxf5 18. gxf5 Nh5 19. Kh1 Be7 20. Rg1 Bg5 21. Bxg5 Nxg5 22. Bf1 Nf4 23. Rg3 Nh5 24. Rg4 Nf4 25. Rg3 Nh5 1/2-1/2

[Event "Scarborough CC-ch Reserves"]
[Site "Toronto"]
[Date "2011.04.21"]
[Round "9"]
[White "Krupka, David"]
[Black "Ferreira, Alex"]
[Result "1/2-1/2"]
[ECO "E46"]
[WhiteElo "2035"]
[BlackElo "2081"]
[PlyCount "88"]
[EventDate "2011.02.24"]
[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. Nc3 Bb4 4. e3 0-0 5. Nge2 d5 6. a3 Be7 7. Nf4 c6 8. Bd3 Nbd7 9. cxd5 Nxd5 10. Nfe2 Nxc3 11. bxc3 e5 12. Qc2 g6 13. 0-0 Bf6 14. Rb1 Nb6 15. a4 Be6 16. f4 exd4 17. Nxd4 Bc4 18. Bxc4 Nxc4 19. Rxb7 c5 20. Nf3 Qd5 21. Qb3 Qe4 22. Ng5 Bxg5 23. fxg5 Nd6 24. Rc7 Nf5 25. c4 Qe5 26. Rd7 Rab8 27. Qd3 Qe6 28. Rd5 Rfc8 29. e4 Nd4 30. Be3 Rb3 31. Qd2 Qxe4 32. Bxd4 cxd4 33. Rxd4 Qe3+ 34. Qxe3 Rxe3 35. Rd7 Rxc4 36. Rdxf7 Re1 37. Rxa7 Rxf1+ 38. Kxf1 Rg4 39. Ra5 Kf7 40. Kf2 Ke6 41. Kf3 Rh4 42. h3 Rb4 43. Ra7 Kf5 44. Ra5+ Ke6 1/2-1/2

[Event "Scarborough CC-ch Reserves"]
[Site "Toronto"]
[Date "2011.04.14"]
[Round "8"]
[White "Krupka, David"]
[Black "Posaratnanathan, Juliaan"]
[Result "1-0"]
[ECO "E30"]
[WhiteElo "2035"]
[BlackElo "1889"]
[PlyCount "59"]
[EventDate "2011.02.24"]
[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. Nc3 Bb4 4. Bg5 b6 5. e3 0-0 6. e4 Be7 7. Bd3 Nc6 8. Nge2 Nxe4 9. Bxe7 Nxc3 10. Bxh7+ Kh8 11. bxc3 Qxe7 12. Be4 Bb7 13. 0-0 f5 14. Bd3 Qg5 15. f4 Qe7 16. Rf3 Rf6 17. Rg3 Rh6 18. Rg5 Rf8 19. Qe1 Rff6 20. Qg3 Qf7 21. d5 exd5 22. cxd5 Ne7 23. c4 Rfg6 24. Re1 Qf6 25. h4 b5 26. h5 Rxg5 27. fxg5 Qb6+ 28. Qf2 Qxf2+ 29. Kxf2 Rxh5 30. Nf4 1-0

[Event "Scarborough CC-ch Reserves"]
[Site "Toronto"]
[Date "2011.03.31"]
[Round "6"]
[White "Krupka, David"]
[Black "Bao, Stephen"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2035"]
[BlackElo "1773"]
[PlyCount "92"]
[EventDate "2011.02.24"]
[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. Nc3 Bb4 4. Bg5 h6 5. Bh4 0-0 6. Qc2 d5 7. e3 g5 8. Bg3 Ne4 9. Bd3 f5 10. f3 Nxc3 11. bxc3 Ba5 12. Ne2 Nd7 13. cxd5 exd5 14. Bxf5 Qe7 15. Bf2 Nb6 16. Bd3 Bd7 17. 0-0 Rf7 18. e4 Raf8 19. Ng3 Qa3 20. Rac1 Na4 21. c4 Nb2 22. Be2 Ba4 23. Qb1 Bd2 24. Nf5 Rf6 25. cxd5 Bxc1 26. Qxc1 R8f7 27. h4 Bd7 28. hxg5 hxg5 29. Qxg5+ Kh8 30. Qh4+ Kg8 31. Nh6+ Rxh6 32. Qxh6 Nd3 33. Bg3 Qc3 34. Qe3 Bb5 35. Bxd3 Qxd3 36. Qxd3 Bxd3 37. Rc1 Rg7 38. Kf2 b5 39. Rxc7 Rxc7 40. Bxc7 Bc4 41. a3 Kf7 42. Ke3 Ke7 43. g4 Kd7 44. Ba5 Bf1 45. e5 Bc4 46. Ke4 Bb3 1-0

[Event "Scarborough CC-ch Reserves"]
[Site "Toronto"]
[Date "2011.03.24"]
[Round "5"]
[White "Huston, Scott"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "D08"]
[WhiteElo "1782"]
[BlackElo "2035"]
[PlyCount "73"]
[EventDate "2011.02.24"]
[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 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Be6 6. e3 dxe3 7. Qxd8+ Rxd8 8. Bxe3 Nge7 9. Be2 Ng6 10. 0-0 Ngxe5 11. b3 Be7 12. Nc3 Bf6 13. Rac1 a6 14. Nxe5 Nxe5 15. Ne4 Be7 16. Rfd1 Bxa3 17. Rxd8+ Kxd8 18. Rd1+ Ke7 19. Nc5 Bc8 20. f4 Nd7 21. Nxd7 Bxd7 22. Bf3 c6 23. Bd4 f6 24. g4 Bd6 25. g5 Rc8 26. Bh5 c5 27. gxf6+ gxf6 28. Re1+ Kd8 29. Be3 Bc6 30. Rd1 Kc7 31. Kf2 Rg8 32. Bf3 f5 33. Bxc6 Kxc6 34. Rd5 Rf8 35. Kg3 b5 36. Kh4 Be7+ 37. Kh5 1/2-1/2

[Event "Scarborough CC-ch Reserves"]
[Site "Toronto"]
[Date "2011.03.17"]
[Round "4"]
[White "Krupka, David"]
[Black "Lin, Tony"]
[Result "0-1"]
[ECO "B67"]
[WhiteElo "2035"]
[BlackElo "1936"]
[PlyCount "80"]
[EventDate "2011.02.24"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. f4 a6 8. Qd2 Bd7 9. 0-0-0 b5 10. e5 dxe5 11. Nxc6 Bxc6 12. Qxd8+ Rxd8 13. Rxd8+ Kxd8 14. fxe5 h6 15. Bxf6+ gxf6 16. exf6 Rg8 17. Ne2 Bc5 18. Ng3 Rg6 19. Bd3 Rxf6 20. Ne4 Be3+ 21. Kb1 Rg6 22. Rd1 Ke7 23. g3 Rg8 24. Re1 Bb6 25. a4 h5 26. axb5 axb5 27. Nc3 h4 28. gxh4 b4 29. Ne4 Rh8 30. Ng3 Ke8 31. h5 Bc7 32. Be4 Bb5 33. Bf3 Bd6 34. Rd1 Be7 35. Rd4 f5 36. c3 bxc3 37. bxc3 Kf7 38. c4 Ba4 39. c5 Rb8+ 40. Ka2 Bb3+ 0-1

[Event "Scarborough CC-ch Reserves"]
[Site "Toronto"]
[Date "2011.03.10"]
[Round "3"]
[White "Sherman, Joshua"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "1885"]
[BlackElo "2035"]
[PlyCount "68"]
[EventDate "2011.02.24"]
[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 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Be3 Bd6 7. Bd3 Na6 8. c3 Nc7 9. Qc2 Nd5 10. Nf3 Bg4 11. 0-0-0 Qa5 12. Rde1 0-0-0 13. Bf5+ Bxf5 14. Qxf5+ Kb8 15. Qb1 Nxe3 16. fxe3 Rhe8 17. Qxh7 Qxa2 18. Qd3 g6 19. Nd2 f5 20. Qc4 Qxc4 21. Nxc4 Bc7 22. h3 Re7 23. Kc2 b5 24. Na3 Rde8 25. Kd3 Re4 26. Rhf1 Bg3 27. Re2 f4 28. Rf3 g5 29. Nb1 f5 30. Nd2 R4e7 31. e4 g4 32. hxg4 fxg4 33. Rf1 a5 34. Nb3 a4 1/2-1/2

[Event "Scarborough CC-ch Reserves"]
[Site "Toronto"]
[Date "2011.03.03"]
[Round "2"]
[White "Krupka, David"]
[Black "Paterson, Jim"]
[Result "1-0"]
[ECO "C62"]
[WhiteElo "2035"]
[BlackElo "1825"]
[PlyCount "95"]
[EventDate "2011.02.24"]
[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 Nc6 2. Nf3 d6 3. d4 e5 4. d5 Nce7 5. Bb5+ Bd7 6. Qd3 a6 7. Bxd7+ Qxd7 8. Nc3 g6 9. Bg5 Bh6 10. Bxh6 Nxh6 11. Qd2 Nhg8 12. 0-0-0 f6 13. h4 h5 14. Ne1 Qg4 15. f3 Qf4 16. Qxf4 exf4 17. Nd3 g5 18. g3 Ng6 19. gxf4 gxf4 20. Ne2 Ne5 21. Rdf1 c6 22. Ndxf4 cxd5 23. Nxd5 Rc8 24. Rhg1 Kf7 25. Nd4 Nh6 26. b3 Rhg8 27. Kd1 Nc6 28. Nxc6 Rxc6 29. Nf4 Rc5 30. Rxg8 Nxg8 31. Rf2 Ne7 32. Rd2 Nc8 33. Rd5 Rxd5+ 34. Nxd5 Ne7 35. Nxe7 Kxe7 36. Kd2 Ke6 37. Ke3 d5 38. Kd4 dxe4 39. Kxe4 a5 40. a3 b6 41. c3 b5 42. f4 f5+ 43. Kd4 Kd6 44. b4 a4 45. c4 bxc4 46. Kxc4 Kc6 47. b5+ Kb6 48. Kb4 1-0

[Event "Scarborough CC-ch Reserves"]
[Site "Toronto"]
[Date "2011.02.24"]
[Round "1"]
[White "Maister, Martin"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "E94"]
[WhiteElo "1772"]
[BlackElo "2035"]
[PlyCount "110"]
[EventDate "2011.02.24"]
[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 g6 3. d4 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. dxe5 dxe5 8. 0-0 c6 9. Qxd8 Rxd8 10. h3 Nbd7 11. Be3 b6 12. b4 Nh5 13. Rfd1 Bb7 14. Rd2 Nf8 15. Rad1 Rxd2 16. Rxd2 Nf4 17. Bf1 N4e6 18. a4 f5 19. Rd1 c5 20. bxc5 f4 21. Bc1 Nxc5 22. Nd5 Nxa4 23. Bd3 Nc5 24. Bb1 Nfd7 25. Bb2 h6 26. Nc7 Rf8 27. Ne6 Nxe6 28. Rxd7 Nc5 29. Rc7 Rd8 30. Bc2 Rd7 31. Rxd7 Nxd7 32. Ba4 Nc5 33. Be8 Nd3 34. Bc3 Bxe4 35. Nh4 Kh7 36. f3 Bf5 37. Bb5 Nc5 38. Bb4 Bd3 39. Bc3 g5 40. g3 gxh4 41. gxh4 e4 42. Bxg7 Kxg7 43. fxe4 Bxe4 44. Kf2 Kf6 45. Ke2 Ke5 46. h5 Kd4 47. h4 a5 48. Kd2 f3 49. Ke1 Ke3 50. Kf1 Bd3+ 51. Kg1 f2+ 52. Kh2 f1Q 53. Bc6 Qf2+ 54. Kh1 Ne4 55. Bxe4 Bxe4# 0-1

[Event "Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2010.12.02"]
[Round "6"]
[White "Wu, Kevin"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "C96"]
[WhiteElo "1957"]
[BlackElo "1986"]
[PlyCount "77"]
[EventDate "2010.10.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Be7 6. 0-0 Nf6 7. Re1 d6 8. h3 0-0 9. c3 Na5 10. Bc2 c5 11. d4 cxd4 12. cxd4 Nd7 13. Nbd2 Nc6 14. d5 Ncb8 15. Nf1 Nb6 16. Ng3 g6 17. Nh2 Bf6 18. Ng4 Bg7 19. b3 N8d7 20. Rb1 Nc5 21. Rf1 Qh4 22. Nh2 Ra7 23. Be3 Rc7 24. Qd2 Qe7 25. Rbc1 f5 26. exf5 gxf5 27. Bg5 Qf7 28. b4 Nca4 29. Bb3 Nc4 30. Rxc4 Rxc4 31. Bxc4 bxc4 32. Rd1 Bd7 33. Nf3 Rb8 34. Bh6 f4 35. Bxg7 Qxg7 36. Ne4 Bxh3 37. Neg5 Bf5 38. Ne6 Qe7 39. Neg5 1-0

[Event "Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2010.11.25"]
[Round "5"]
[White "Krupka, David"]
[Black "Bzikot, Robert"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "1986"]
[BlackElo "2024"]
[PlyCount "46"]
[EventDate "2010.10.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nf3 Nf6 5. Nc3 e6 6. Bg5 Be7 7. e3 0-0 8. Bd3 Nc6 9. Rc1 Qb6 10. Qe2 a5 11. 0-0 a4 12. Ne5 a3 13. b3 Nb4 14. Bb1 Qd8 15. f4 b6 16. Rf3 Ba6 17. Qe1 Ra7 18. Qh4 g6 19. Qh6 Re8 20. Rh3 Bf8 21. Qh4 Bg7 22. Ng4 Nxg4 23. Bxd8 h5 1-0

[Event "Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2010.11.18"]
[Round "4"]
[White "Pedersen, Rune Linnebo"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "2342"]
[BlackElo "1986"]
[PlyCount "77"]
[EventDate "2010.10.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. b3 g6 4. c4 Bg7 5. Bb2 c6 6. Be2 0-0 7. 0-0 Bg4 8. h3 Bxf3 9. Bxf3 e6 10. d3 Nbd7 11. e4 dxe4 12. dxe4 e5 13. b4 c5 14. b5 Re8 15. g4 Nb6 16. Qb3 Nfd7 17. Nc3 Qh4 18. Bg2 Nf8 19. Nd5 Ne6 20. Rac1 Rac8 21. a4 Nxd5 22. cxd5 Nf4 23. Rc2 b6 24. Rd1 Rcd8 25. Qg3 Qe7 26. Bf1 Bf6 27. Ra1 h5 28. Be2 Bh4 29. Qf3 Rd6 30. Bf1 Kh7 31. a5 Rg8 32. Qc3 Re8 33. axb6 axb6 34. Bc1 Bf6 35. Ra3 Bg7 36. Qg3 h4 37. Qf3 f5 38. Bxf4 fxe4 39. Qxe4 1/2-1/2

[Event "Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2010.11.11"]
[Round "3"]
[White "Krupka, David"]
[Black "Ferreira, Alex"]
[Result "1/2-1/2"]
[ECO "A52"]
[WhiteElo "1986"]
[BlackElo "2087"]
[PlyCount "62"]
[EventDate "2010.10.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. e3 Ngxe5 6. Be2 Bb4+ 7. Bd2 Bxd2+ 8. Qxd2 0-0 9. Nc3 d6 10. 0-0 Nxf3+ 11. Bxf3 Ne5 12. Be2 Be6 13. b3 Qh4 14. Nd5 c6 15. Nf4 Rad8 16. Qd4 Bc8 17. Qxa7 Bf5 18. Qd4 g5 19. Nh5 g4 20. Nf4 Qg5 21. Kh1 h5 22. Nd3 Ng6 23. f4 Qe7 24. Rae1 h4 25. Nf2 g3 26. Ng4 Bxg4 27. Bxg4 f5 28. Bh5 Rf6 29. Rf3 Nf8 30. hxg3 Ne6 31. Qc3 Nc5 1/2-1/2

[Event "Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2010.11.04"]
[Round "2"]
[White "Sharpe, Sam"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "D08"]
[WhiteElo "1988"]
[BlackElo "1986"]
[PlyCount "42"]
[EventDate "2010.10.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. Nbd2 Be6 6. a3 Nge7 7. g3 Ng6 8. Bg2 Be7 9. b4 0-0 10. 0-0 Qd7 11. Bb2 Ncxe5 12. Rc1 c5 13. Nxe5 Nxe5 14. bxc5 Nc6 15. Nf3 Bxc5 16. Qd2 Rad8 17. Rfd1 Bg4 18. Qf4 Bd6 19. Qd2 Bc5 20. Qf4 Bd6 21. Qd2 Bc5 1/2-1/2

[Event "Toronto Howard Ridout Swiss"]
[Site "Toronto"]
[Date "2010.10.21"]
[Round "6"]
[White "Guo, Josh"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "2204"]
[BlackElo "1949"]
[PlyCount "78"]
[EventDate "2010.09.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Bc4 Qe7+ 7. Qe2 Be6 8. Bb3 Bd5 9. f3 Bxb3 10. axb3 Qxe2+ 11. Nxe2 Bb4+ 12. Kf2 0-0 13. Bf4 Re8 14. Ng3 Nd7 15. Nf5 Nf8 16. c3 Ne6 17. Bd6 Bxd6 18. Nxd6 Re7 19. g3 Rd7 20. Nf5 a6 21. b4 Nc7 22. Rhe1 Kf8 23. Ne3 Re8 24. Nc4 Re6 25. Nb6 Rde7 26. Na4 Rxe1 27. Rxe1 Rxe1 28. Kxe1 Ne6 29. Nc5 Nd8 30. Kd2 Ke7 31. Kd3 Kd6 32. Ke4 g6 33. h4 f5+ 34. Ke3 h6 35. Kd3 f6 36. Ke3 g5 37. h5 b6 38. Nxa6 Ne6 39. f4 Ng7 1/2-1/2

[Event "Toronto Howard Ridout Swiss"]
[Site "Toronto"]
[Date "2010.10.14"]
[Round "5"]
[White "Krupka, David"]
[Black "Hall, John2222"]
[Result "1/2-1/2"]
[ECO "E31"]
[WhiteElo "1949"]
[BlackElo "2250"]
[PlyCount "73"]
[EventDate "2010.09.09"]
[EventType "swiss"]
[EventRounds "7"]
[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. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 Bxc3+ 7. bxc3 d6 8. e3 Qe7 9. Bd3 e5 10. e4 Nbd7 11. f3 Nf8 12. Ne2 Ng6 13. Bf2 Nh5 14. g3 Bh3 15. Rg1 Nf6 16. Be3 h5 17. Bg5 Qc7 18. Qd2 Nh7 19. Be3 Qe7 20. 0-0-0 Bd7 21. Rde1 a6 22. f4 b5 23. f5 Ngf8 24. h3 bxc4 25. Bc2 f6 26. h4 g5 27. Kb1 g4 28. Ka1 Kd8 29. Rb1 Bb5 30. a4 Qa7 31. Kb2 Be8 32. Kc1 Rb8 33. Qd1 Rg8 34. Kd2 Rxb1 35. Qxb1 Rg7 36. Qa2 Qb7 37. Qxc4 1/2-1/2

[Event "Toronto Howard Ridout Swiss"]
[Site "Toronto"]
[Date "2010.09.30"]
[Round "4"]
[White "Pedersen, Rune Linnebo"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2365"]
[BlackElo "1949"]
[PlyCount "42"]
[EventDate "2010.09.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. d4 Bd6 7. Bd3 0-0 8. 0-0 Be6 9. Be3 Nd7 10. c4 Re8 11. Qd2 Bg4 12. Nh4 g6 13. h3 f5 14. Bg5 Be7 15. f4 Bh5 16. Bxf5 gxf5 17. Nxf5 f6 18. Bh4 Bf8 19. Rae1 Qb6 20. c5 Qc7 21. d5 Bf7 1-0

[Event "Toronto Howard Ridout Swiss"]
[Site "Toronto"]
[Date "2010.09.23"]
[Round "3"]
[White "Krupka, David"]
[Black "Bzikot, Robert"]
[Result "1-0"]
[ECO "A86"]
[WhiteElo "1949"]
[BlackElo "2066"]
[PlyCount "67"]
[EventDate "2010.09.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. Nh3 0-0 7. d5 c6 8. Nf4 Bd7 9. e3 Na6 10. 0-0 Nc7 11. Qd3 Rb8 12. b3 b5 13. Rb1 bxc4 14. bxc4 Rxb1 15. Qxb1 cxd5 16. cxd5 Qb8 17. Bd2 g5 18. Nfe2 Na6 19. Nd4 Nc5 20. Qc2 a6 21. Rb1 Qc7 22. Qb2 Qd8 23. Qb6 Qe8 24. Nb3 Nxb3 25. Rxb3 Bc8 26. Bf1 Qf7 27. Qc6 Ne4 28. Nxe4 fxe4 29. Be1 Qf6 30. Rb8 Bg4 31. Rxf8+ Kxf8 32. Qxa6 Qa1 33. Qa5 Bh5 34. Qd2 1-0

[Event "Toronto Howard Ridout Swiss"]
[Site "Toronto"]
[Date "2010.09.16"]
[Round "2"]
[White "Krupka, David"]
[Black "Abrahams, Daniel"]
[Result "0-1"]
[ECO "E30"]
[WhiteElo "1949"]
[BlackElo "2098"]
[PlyCount "62"]
[EventDate "2010.09.09"]
[EventType "swiss"]
[EventRounds "7"]
[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. Nc3 Bb4 4. Bg5 c5 5. d5 Bxc3+ 6. bxc3 d6 7. e3 Qe7 8. Bd3 0-0 9. Ne2 Nbd7 10. 0-0 Ne5 11. h3 b6 12. Bb1 h6 13. Bh4 Rd8 14. e4 Nxc4 15. f4 exd5 16. e5 dxe5 17. fxe5 Qxe5 18. Bxf6 gxf6 19. Qc2 f5 20. Rf3 Be6 21. Qc1 Kf8 22. Qxh6+ Ke7 23. Nf4 Qf6 24. Qxf6+ Kxf6 25. Nh5+ Kg5 26. Ng3 Nd6 27. Bc2 Ne4 28. Raf1 Nd2 29. Rxf5+ Bxf5 30. Rxf5+ Kh6 31. Rxf7 Ne4 0-1

[Event "Toronto Howard Ridout Swiss"]
[Site "Toronto"]
[Date "2010.09.09"]
[Round "1"]
[White "Lamb, Bryan"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "A18"]
[WhiteElo "2180"]
[BlackElo "1949"]
[PlyCount "67"]
[EventDate "2010.09.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. cxd5 exd5 5. e5 Ne4 6. Qf3 Nxc3 7. dxc3 Be6 8. Bf4 Be7 9. Qg3 g6 10. Bd3 c6 11. h4 h5 12. Nf3 Nd7 13. Nd4 Nf8 14. 0-0-0 Qa5 15. Bg5 Bxg5+ 16. Qxg5 Qd8 17. Qg3 Qe7 18. f4 Bg4 19. Rd2 Ne6 20. f5 gxf5 21. Rf1 f4 22. Qe1 0-0-0 23. Nxe6 Qxe6 24. Rxf4 Rhe8 25. Qf2 Qxe5 26. Rxf7 Qe1+ 27. Kc2 Qxf2 28. Rdxf2 Rd7 29. Bf5 Bxf5+ 30. R7xf5 Rde7 31. Rxh5 Re2+ 32. Rxe2 Rxe2+ 33. Kb3 Rxg2 34. Rh7 1/2-1/2

[Event "Scarborough CC-ch Reserves op"]
[Site "Toronto"]
[Date "2010.04.08"]
[Round "7"]
[White "Krupka, David"]
[Black "Manalo, Pepin"]
[Result "0-1"]
[ECO "A50"]
[WhiteElo "2015"]
[BlackElo "1838"]
[PlyCount "130"]
[EventDate "2010.02.25"]
[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. Nc3 b6 4. e4 Bb4 5. Bd3 Bb7 6. f3 0-0 7. Nge2 d5 8. cxd5 exd5 9. e5 Nfd7 10. a3 Be7 11. f4 f5 12. e6 Nf6 13. Bxf5 c5 14. 0-0 Na6 15. Bh3 Nc7 16. f5 Ba6 17. Be3 Rc8 18. Kh1 Bd6 19. Bf4 Bxf4 20. Rxf4 Qd6 21. Rf3 Ne4 22. Qe1 Ng5 23. Rf2 Nxh3 24. gxh3 Bd3 25. Ng3 cxd4 26. Rd1 Bc4 27. Rxd4 Qc5 28. Qd2 Rce8 29. Rff4 Rf6 30. Rg4 Kh8 31. Qg5 Qf8 32. Rdf4 Bd3 33. Nh5 Rxf5 34. Rxf5 Bxf5 35. Rf4 g6 36. Qf6+ Kg8 37. Qxf8+ Kxf8 38. Nf6 Rxe6 39. Nxh7+ Kg7 40. Ng5 Re1+ 41. Kg2 Rc1 42. Rd4 Kf6 43. h4 Rc2+ 44. Kg3 Rxb2 45. Nxd5+ Nxd5 46. Rxd5 Rb3+ 47. Kf4 Rxa3 48. Rd6+ Ke7 49. Rc6 Ra4+ 50. Ke5 Ra5+ 51. Kf4 b5 52. h5 Bd7 53. Rxg6 b4 54. h6 b3 55. h7 Ra4+ 56. Ke5 Rh4 57. Rg7+ Ke8 58. Rg8+ Ke7 59. Rg7+ Ke8 60. Kd6 Rd4+ 61. Ke5 Rh4 62. Kd6 Rh6+ 63. Kd5 b2 64. Rg8+ Ke7 65. Rg7+ Kf6 0-1

[Event "Scarborough CC-ch Reserves op"]
[Site "Toronto"]
[Date "2010.04.01"]
[Round "6"]
[White "Krupka, David"]
[Black "Posaratnanathan, Juliaan"]
[Result "1-0"]
[ECO "E31"]
[WhiteElo "2015"]
[BlackElo "1680"]
[PlyCount "69"]
[EventDate "2010.02.25"]
[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. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 exd5 7. cxd5 d6 8. e3 a6 9. Nge2 Bf5 10. a3 Bxc3+ 11. Nxc3 Nbd7 12. Bd3 Bg6 13. 0-0 0-0 14. e4 Qc7 15. Rc1 b5 16. f3 Rfe8 17. g4 Nh7 18. f4 f6 19. Qf3 Rf8 20. Bg3 Rae8 21. h4 Re7 22. h5 Be8 23. Bb1 Kh8 24. Qd3 g6 25. e5 c4 26. Qd2 gxh5 27. Ne4 fxe5 28. fxe5 Rg8 29. exd6 Qa7+ 30. Bf2 Rxg4+ 31. Kh1 Qb7 32. dxe7 Ne5 33. Qxh6 Nf3 34. Qf8+ Rg8 35. Qxf3 1-0

[Event "Scarborough CC-ch Reserves op"]
[Site "Toronto"]
[Date "2010.03.25"]
[Round "5"]
[White "Stewart, Frankie"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "E97"]
[WhiteElo "1766"]
[BlackElo "2015"]
[PlyCount "77"]
[EventDate "2010.02.25"]
[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 g6 3. e4 d6 4. Nf3 Bg7 5. d4 0-0 6. Be2 e5 7. 0-0 Nc6 8. dxe5 dxe5 9. Qb3 Qe7 10. Bg5 Be6 11. Qxb7 Nb4 12. Qb5 Nc2 13. Rab1 h6 14. Bh4 Nd4 15. Qxe5 Nxe2+ 16. Nxe2 g5 17. Bg3 Nh5 18. Qxc7 Qxc7 19. Bxc7 Bxc4 20. Rfe1 Bxa2 21. Rbd1 Rac8 22. Bd6 Rfd8 23. e5 Rc2 24. Rd2 Rxd2 25. Nxd2 Bxe5 26. Bxe5 Rxd2 27. Bc3 Rd8 28. g4 Ng7 29. Ng3 Be6 30. Ne4 Ne8 31. f3 Bb3 32. Kf2 Bc2 33. Nd2 Nc7 34. Ba5 Rd5 35. Bxc7 Rxd2+ 36. Re2 Rxe2+ 37. Kxe2 Ba4 38. b4 Kg7 39. Ke3 1/2-1/2

[Event "Scarborough CC-ch Reserves op"]
[Site "Toronto"]
[Date "2010.03.18"]
[Round "4"]
[White "Krupka, David"]
[Black "Rutherdale, William"]
[Result "1/2-1/2"]
[ECO "C90"]
[WhiteElo "2015"]
[BlackElo "1734"]
[PlyCount "97"]
[EventDate "2010.02.25"]
[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 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. d3 Nc6 12. Nbd2 g6 13. Nf1 Nh5 14. d4 Qc7 15. Bh6 Rd8 16. d5 Na5 17. b3 Nf4 18. Qd2 Nh5 19. g4 Ng7 20. Ng3 Re8 21. Kg2 Nb7 22. Rh1 f6 23. Nh2 Nd8 24. Be3 Nf7 25. Raf1 a5 26. h4 b4 27. c4 Bd7 28. h5 g5 29. Qe2 Nh6 30. f3 a4 31. Ra1 a3 32. Rag1 Reb8 33. Qd3 Nf7 34. h6 Nxh6 35. Nf5 Ngxf5 36. gxf5 Nf7 37. Ng4 Kg7 38. Kf2 Rh8 39. Rh5 h6 40. Qf1 Rh7 41. Qg2 Rah8 42. Nh2 Be8 43. Bd1 Nd8 44. f4 exf4 45. Bxf4 Nf7 46. Rh3 h5 47. Nf3 Qd8 48. Rg3 Kf8 49. Be3 1/2-1/2

[Event "Scarborough CC-ch Reserves op"]
[Site "Toronto"]
[Date "2010.03.11"]
[Round "3"]
[White "Ugodnikov, Arkadiy"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1785"]
[BlackElo "2015"]
[PlyCount "47"]
[EventDate "2010.02.25"]
[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 c6 2. d4 d5 3. f3 e6 4. Nc3 Bb4 5. Nge2 dxe4 6. fxe4 Qh4+ 7. Ng3 Nf6 8. Qf3 e5 9. dxe5 Ng4 10. Bd2 Nxe5 11. Qe3 Be6 12. a3 Be7 13. 0-0-0 Nbd7 14. Nf5 Bxf5 15. exf5 Bc5 16. Qf4 Qxf4 17. Bxf4 0-0-0 18. Be2 Rhe8 19. Ne4 Bf8 20. Nd6+ Bxd6 21. Rxd6 f6 22. Rhd1 Nf7 23. Rxc6+ bxc6 24. Ba6# 1-0

[Event "Scarborough CC-ch Reserves op"]
[Site "Toronto"]
[Date "2010.03.04"]
[Round "2"]
[White "Krupka, David"]
[Black "Takov, Chris"]
[Result "1/2-1/2"]
[ECO "E66"]
[WhiteElo "2015"]
[BlackElo "1792"]
[PlyCount "89"]
[EventDate "2010.02.25"]
[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 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. Nc3 Nc6 7. d5 Nb8 8. 0-0 c5 9. h3 e5 10. e4 a6 11. a4 Ne8 12. Bg5 f6 13. Be3 f5 14. Qd2 Ra7 15. b4 f4 16. gxf4 exf4 17. Bxf4 Bxc3 18. Qxc3 Rxf4 19. bxc5 Rxe4 20. cxd6 Nxd6 21. Ne5 Qg5 22. Rae1 Rh4 23. Nf3 Rxh3 24. Re3 Rxf3 25. Rxf3 Bg4 26. Re3 Nd7 27. c5 Nf5 28. f4 Qf6 29. Qxf6 Nxf6 30. Rb3 Be2 31. Rfb1 Bc4 32. Rxb7 Rxb7 33. Rxb7 Nxd5 34. c6 Nde7 35. c7 Nd6 36. Rb8+ Kf7 37. Bh3 Be6 38. Bxe6+ Kxe6 39. Ra8 Kd7 40. Rxa6 Kxc7 41. Ra8 Ndc8 42. Ra6 Nb6 43. Kh2 Nbc8 44. Rf6 Nd6 45. Rf8 1/2-1/2

[Event "Scarborough CC-ch Reserves op"]
[Site "Toronto"]
[Date "2010.02.25"]
[Round "1"]
[White "Krupka, David"]
[Black "Moran Venegas, Mario"]
[Result "1-0"]
[ECO "B73"]
[WhiteElo "2015"]
[BlackElo "1677"]
[PlyCount "77"]
[EventDate "2010.02.25"]
[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 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. f3 Nxd4 10. Bxd4 Be6 11. Kh1 Qa5 12. b3 Rfc8 13. Qe1 Rc6 14. Rd1 Rac8 15. Rd3 Nh5 16. Bxg7 Kxg7 17. Nd5 Qxe1 18. Rxe1 Bxd5 19. Rxd5 Rxc2 20. Bc4 Nf4 21. Rg5 e5 22. a4 Rd2 23. h4 a6 24. Rg3 h5 25. Kg1 Rc5 26. Rb1 Kf8 27. Rg5 Ke7 28. Rg3 Rc2 29. Rg5 b5 30. axb5 axb5 31. Bf1 Rc1 32. Rb2 b4 33. Ra2 R5c2 34. Ra4 Rb2 35. Rxb4 Rbb1 36. Rb7+ Kf6 37. Rd7 Rxf1+ 38. Kh2 Rh1+ 39. Kg3 1-0

[Event "Toronto Scarborough CC Frost op"]
[Site "Toronto"]
[Date "2010.02.11"]
[Round "6"]
[White "Paterson, Jim"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "1877"]
[BlackElo "2047"]
[PlyCount "89"]
[EventDate "2010.01.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e3 e5 2. c4 Nf6 3. Nc3 Bb4 4. Nf3 e4 5. Ng5 Bxc3 6. bxc3 h6 7. Nh3 d6 8. Nf4 0-0 9. d4 c5 10. Be2 Nc6 11. 0-0 b6 12. Qa4 Qd7 13. Qc2 Qf5 14. f3 exf3 15. Bd3 Qg5 16. Rxf3 Bg4 17. Rf2 Ne8 18. Be4 Bd7 19. Bd2 Qe7 20. Bd5 Nf6 21. Ng6 Qd8 22. Nxf8 Qxf8 23. Raf1 Nxd5 24. cxd5 Nd8 25. c4 Qe7 26. dxc5 bxc5 27. e4 f6 28. Bc3 Nf7 29. Qd3 Ne5 30. Qg3 Kh8 31. Bxe5 dxe5 32. Qh4 Rf8 33. g4 Rb8 34. g5 fxg5 35. Qg3 Rb4 36. Rf7 Qd6 37. Rf8+ Kh7 38. Qf2 Rxc4 39. Qf7 Bg4 40. Qg8+ Kg6 41. R8f7 Rxe4 42. Rxg7+ Kh5 43. Rxg5+ hxg5 44. Qh7+ Qh6 45. Qxe4 1-0

[Event "Toronto Scarborough CC Frost op"]
[Site "Toronto"]
[Date "2010.02.04"]
[Round "5"]
[White "Mahoney, Ian"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1570"]
[BlackElo "2047"]
[PlyCount "58"]
[EventDate "2010.01.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Ng3 Bg4 6. N1e2 g6 7. h3 Bd7 8. Nf4 Na6 9. Bc4 Nc7 10. c3 b5 11. Bb3 Bg7 12. 0-0 0-0 13. Re1 e6 14. h4 Nfd5 15. h5 g5 16. Nd3 f5 17. Ne5 Be8 18. a4 Qf6 19. axb5 cxb5 20. Qf3 g4 21. Qd1 Qh4 22. h6 Bxe5 23. Rxe5 Rf6 24. Qe2 f4 25. Ne4 Rxh6 26. f3 Qh1+ 27. Kf2 g3+ 28. Nxg3 fxg3+ 29. Kxg3 Qh4# 0-1

[Event "Toronto Scarborough CC Frost op"]
[Site "Toronto"]
[Date "2010.01.28"]
[Round "4"]
[White "Krupka, David"]
[Black "Manalo, Pepin"]
[Result "1-0"]
[ECO "A55"]
[WhiteElo "2047"]
[BlackElo "1808"]
[PlyCount "73"]
[EventDate "2010.01.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Nc3 c6 5. g3 e5 6. e4 Be7 7. Bg2 0-0 8. 0-0 Qc7 9. h3 Nb6 10. Qe2 Bd7 11. Bg5 Rfe8 12. Rac1 Rad8 13. b3 h6 14. Be3 Bf8 15. d5 c5 16. Qd2 Qc8 17. Kh2 a6 18. Ng1 Kh8 19. f4 exf4 20. Bxf4 Ng8 21. g4 f6 22. Nge2 Qc7 23. Ng3 g5 24. Be3 Re5 25. Nce2 Be8 26. Nf5 Bg6 27. Neg3 Ne7 28. Qf2 Nxf5 29. gxf5 Bf7 30. Bd2 Nd7 31. Bf3 Ree8 32. Rce1 Bg7 33. h4 Re7 34. Bc3 Ne5 35. Bxe5 Rxe5 36. Qg2 Rg8 37. Qh3 1-0

[Event "Toronto Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2009.12.03"]
[Round "5"]
[White "Ward, Dean"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "1766"]
[BlackElo "2092"]
[PlyCount "97"]
[EventDate "2009.11.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. cxd5 exd5 6. Qb3 Be7 7. Rc1 0-0 8. Nf3 c6 9. h3 Ne4 10. Bf4 Ndf6 11. e3 Qb6 12. Qxb6 axb6 13. a3 b5 14. Na2 Nd7 15. Bd3 f5 16. Ne5 Nb6 17. f3 Nd6 18. Ke2 Ndc4 19. Rc2 Be6 20. Rhc1 g5 21. Bh2 f4 22. Bxc4 Nxc4 23. Nxc4 dxc4 24. e4 Rfd8 25. Bg1 Bf6 26. Rd2 h5 27. Nc3 Rd7 28. Rcd1 Rad8 29. e5 Be7 30. Ne4 Bd5 31. g4 hxg4 32. hxg4 Kg7 33. Nc3 Be6 34. a4 b4 35. Ne4 Ra8 36. Ra1 b5 37. a5 Rdd8 38. Nc5 Bxc5 39. dxc5 Bd5 40. Bd4 Kg6 41. Kf2 Rh8 42. e6 Rh7 43. Re2 Rh2+ 44. Kf1 Rxe2 45. Kxe2 Bxe6 46. a6 Bd5 47. Be5 Kf7 48. a7 Ke6 49. Bb8 1/2-1/2

[Event "Toronto Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2009.11.26"]
[Round "4"]
[White "Krupka, David"]
[Black "Gillis, Doug"]
[Result "1-0"]
[ECO "E30"]
[WhiteElo "2092"]
[BlackElo "1694"]
[PlyCount "119"]
[EventDate "2009.11.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Bg5 Bxc3+ 5. bxc3 d6 6. Nf3 Nbd7 7. Qc2 h6 8. Bh4 0-0 9. e4 e5 10. Bd3 Re8 11. 0-0 Nf8 12. Rab1 Ng6 13. Bg3 Rb8 14. Nh4 Nh5 15. Nf5 Nxg3 16. fxg3 Ne7 17. Ne3 exd4 18. cxd4 Nc6 19. Qf2 Rf8 20. Nd5 Ne7 21. Nxe7+ Qxe7 22. Rbe1 f6 23. Bb1 Bd7 24. Qc2 Rbe8 25. e5 f5 26. e6 Bxe6 27. d5 Qf6 28. Rxe6 Rxe6 29. dxe6 Qxe6 30. g4 g6 31. gxf5 gxf5 32. h3 Qe5 33. Qd3 Qc5+ 34. Kh1 Qe5 35. Qf3 Kg7 36. Qxb7 f4 37. Qxc7+ Rf7 38. Qc8 Qe2 39. Qg4+ Qxg4 40. hxg4 h5 41. gxh5 Kh6 42. Bg6 Rf6 43. Rf3 Kg5 44. Kg1 a5 45. Kf2 Kg4 46. Rd3 Kh4 47. Kf3 Kg5 48. Rd5+ Kh6 49. Rxa5 Rxg6 50. hxg6 Kxg6 51. Kxf4 Kf7 52. Ra6 Ke7 53. Ke4 Kd7 54. Kd5 Kc7 55. Rxd6 Kb7 56. Rg6 Kc7 57. Rh6 Kb7 58. Kc5 Kc7 59. Rh7+ Kb8 60. Kd6 1-0

[Event "Toronto Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2009.11.19"]
[Round "3"]
[White "Krupka, David"]
[Black "Jizan, Masoud"]
[Result "0-1"]
[ECO "E30"]
[WhiteElo "2092"]
[BlackElo "1743"]
[PlyCount "56"]
[EventDate "2009.11.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 c5 5. d5 Qa5 6. Bxf6 gxf6 7. Qd2 exd5 8. cxd5 d6 9. e4 f5 10. Bd3 Rg8 11. Kf1 Nd7 12. Re1 Kd8 13. Nge2 Ne5 14. exf5 Qxa2 15. Bb1 Qc4 16. f3 b6 17. Kf2 Bb7 18. Rd1 Kc7 19. Qh6 Ba6 20. Rhe1 Rae8 21. Ba2 Qg4 22. Qxd6+ Kxd6 23. fxg4 Nd3+ 24. Kf3 Bxc3 25. bxc3 Nxe1+ 26. Rxe1 Re5 27. c4 Rge8 28. Bb3 Re3+ 0-1

[Event "Toronto Scarborough CC Falling Leaves"]
[Site "Toronto"]
[Date "2009.11.12"]
[Round "2"]
[White "Paterson, Jim"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1826"]
[BlackElo "2092"]
[PlyCount "51"]
[EventDate "2009.11.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e3 d5 2. f4 g6 3. c3 Bg7 4. d4 c6 5. Nf3 Bf5 6. Be2 Bxb1 7. Rxb1 Nf6 8. 0-0 Nbd7 9. a4 Ne4 10. Bd2 0-0 11. Be1 Qc7 12. Nd2 Nxd2 13. Qxd2 f5 14. Bh4 Nb6 15. b3 Nc8 16. h3 Nd6 17. Bf3 e6 18. Rfc1 b5 19. Qa2 Rfc8 20. Qa3 Bf8 21. Qa2 Kf7 22. Be1 Rab8 23. Ra1 Rb7 24. g4 Kg8 25. g5 Qb6 26. a5 1/2-1/2

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2009.10.29"]
[Round "8"]
[White "Al Ganabi, Haqi"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "1882"]
[BlackElo "2144"]
[PlyCount "86"]
[EventDate "2009.09.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Bd6 7. Bd3 Bg4 8. h3 Bh5 9. Qe2+ Qe7 10. Qxe7+ Kxe7 11. Nh4 Bg6 12. Nxg6+ hxg6 13. Bd2 Nd7 14. 0-0-0 Rhe8 15. c4 Kf8 16. h4 c5 17. h5 g5 18. Bf5 Nb6 19. b4 Nxc4 20. bxc5 Nxd2 21. Kxd2 Bf4+ 22. Kd3 Rad8 23. g3 Bc7 24. Be4 b6 25. c6 Rd6 26. d5 f5 27. Bg2 Rh6 28. a4 Rd8 29. Kc4 Ke7 30. Rde1+ Kd6 31. Re2 Rdh8 32. Rhe1 Bd8 33. Re5 Rxh5 34. Rxf5 Bf6 35. Kb5 Rh2 36. Be4 Re8 37. Re2 Rhh8 38. f3 Rh1 39. Ra2 Rc1 40. Re2 Rc5+ 41. Kb4 Rh8 42. f4 g4 43. Bg2 Rc3 1-0

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2009.10.22"]
[Round "7"]
[White "Krupka, David"]
[Black "Bzikot, Robert"]
[Result "1/2-1/2"]
[ECO "A86"]
[WhiteElo "2144"]
[BlackElo "1908"]
[PlyCount "59"]
[EventDate "2009.09.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c4 Bg7 5. Nc3 d6 6. Nh3 0-0 7. d5 Na6 8. Nf4 Nc5 9. Be3 e5 10. dxe6 Nxe6 11. Rc1 Ng4 12. Nxe6 Bxe6 13. Bd4 Bh6 14. f4 c5 15. Bg1 Nf6 16. b3 Qe7 17. Qd3 Rad8 18. Rd1 Rfe8 19. Bf2 b5 20. cxb5 d5 21. 0-0 d4 22. Na4 c4 23. bxc4 Qb4 24. Qb3 Qxc4 25. Qxc4 Bxc4 26. Rxd4 Rxd4 27. Bxd4 Ne4 28. Nc3 Nxc3 29. Bxc3 Rxe2 30. Rd1 1/2-1/2

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2009.10.15"]
[Round "6"]
[White "Krupka, David"]
[Black "Ugodnikov, Arkadiy"]
[Result "1/2-1/2"]
[ECO "B14"]
[WhiteElo "2144"]
[BlackElo "1748"]
[PlyCount "89"]
[EventDate "2009.09.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 cxd4 5. exd4 d5 6. Qb3 dxc4 7. Bxc4 e6 8. Bg5 Bg7 9. Nf3 0-0 10. Rd1 Qa5 11. 0-0 Nbd7 12. d5 exd5 13. Nxd5 Nxd5 14. Rxd5 Qb6 15. Rb5 Qc7 16. Be7 Nb6 17. Bxf8 Bxf8 18. Bd3 Be6 19. Qc2 Qf4 20. Qc1 Qf6 21. Qc7 Bd5 22. Qe5 Qd8 23. Qe2 Rc8 24. Rd1 a6 25. Rxd5 Qxd5 26. Bxg6 Qc5 27. Bb1 Bg7 28. Qd3 Qh5 29. h3 Qg6 30. Qe3 Qf6 31. Qe4 Rd8 32. Qxh7+ Kf8 33. Rxd8+ Qxd8 34. Qe4 Nd5 35. g3 Bxb2 36. Nh4 Bf6 37. Nf5 Qd7 38. h4 Ne7 39. Nxe7 Bxe7 40. h5 Qd1+ 41. Kg2 Qxh5 42. Qxb7 a5 43. Qc8+ Kg7 44. Qf5 Qxf5 45. Bxf5 1/2-1/2

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2009.10.08"]
[Round "5"]
[White "Hall, John2222"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2257"]
[BlackElo "2144"]
[PlyCount "87"]
[EventDate "2009.09.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bc5 6. Be3 Bxd4 7. Bxd4 Nxd4 8. Qxd4 d6 9. 0-0-0 Qe7 10. f3 0-0 11. g4 Qe5 12. Qxe5 dxe5 13. g5 Ne8 14. Nd5 Be6 15. h4 Kh8 16. Rh2 Rc8 17. Rhd2 f6 18. Be2 Bxd5 19. Rxd5 Nd6 20. c4 Rcd8 21. c5 Nf7 22. gxf6 gxf6 23. Rd7 Rxd7 24. Rxd7 Nh6 25. Rxc7 Rf7 26. Rxf7 Nxf7 27. Bc4 Nd8 28. Bd5 Kg7 29. b4 Kg6 30. b5 Kh5 31. c6 bxc6 32. bxc6 Nxc6 33. Bxc6 Kxh4 34. Bd7 h5 35. Be8 Kg5 36. Kd2 h4 37. Ke3 h3 38. Kf2 Kf4 39. Bh5 f5 40. exf5 Kxf5 41. Bg4+ Kf4 42. Bxh3 e4 43. fxe4 Kxe4 44. Ke2 1-0

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2009.10.01"]
[Round "4"]
[White "Moffat, Andrei"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "2210"]
[BlackElo "2144"]
[PlyCount "80"]
[EventDate "2009.09.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Qf3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Qg3 Bf5 7. d3 Qa5+ 8. Bd2 Qe5+ 9. Qxe5+ fxe5 10. 0-0-0 Nd7 11. Nf3 0-0-0 12. Ba5 Re8 13. h3 c5 14. g4 Be6 15. Bg2 f6 16. a3 Nb8 17. Nd2 b6 18. Bc3 Kc7 19. Nc4 Nc6 20. Rhe1 g5 21. Be4 Bd6 22. Ne3 Ne7 23. b4 h5 24. Kb2 hxg4 25. hxg4 Rh4 26. f3 Nc6 27. b5 Nd4 28. a4 Rh3 29. Ra1 Nxf3 30. Rh1 Rxh1 31. Rxh1 Nd4 32. Bd2 Ne2 33. Bc6 Rf8 34. a5 Nd4 35. axb6+ axb6 36. Bd5 Bd7 37. c4 Kd8 38. Re1 Bc7 39. Bc3 Kc8 40. Ra1 Nb3 1-0

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2009.09.24"]
[Round "3"]
[White "Krupka, David"]
[Black "Moysoski, Randy"]
[Result "1-0"]
[ECO "E65"]
[WhiteElo "2144"]
[BlackElo "1894"]
[PlyCount "83"]
[EventDate "2009.09.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 d6 5. Bg2 Nbd7 6. 0-0 0-0 7. Nc3 c5 8. d5 Ng4 9. Qc2 a6 10. h3 Nge5 11. Nd2 Nf6 12. a4 Qa5 13. f4 Ned7 14. Kh2 Rb8 15. Rb1 Qc7 16. Nf3 Re8 17. Bd2 e6 18. dxe6 fxe6 19. e4 e5 20. Rbe1 Nf8 21. fxe5 dxe5 22. Nd5 Qd6 23. Bc3 Nxd5 24. cxd5 b5 25. axb5 axb5 26. Ra1 b4 27. Bd2 Ba6 28. Rfc1 Nd7 29. Ng5 Bf6 30. Ne6 Rec8 31. Bf1 Bxf1 32. Rxf1 Ra8 33. Rxa8 Rxa8 34. Be3 Qa6 35. Qf2 Qd3 36. Bg5 Qxe4 37. Bxf6 c4 38. Be7 Qf5 39. Bxb4 Rc8 40. Qxf5 gxf5 41. Rxf5 h6 42. Bc3 1-0

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2009.09.17"]
[Round "2"]
[White "Morra, Lui"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1612"]
[BlackElo "2144"]
[PlyCount "82"]
[EventDate "2009.09.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Bd6 7. Be2 0-0 8. Be3 Na6 9. 0-0 Nc7 10. c4 Re8 11. Re1 Bg4 12. Qb3 Qd7 13. Red1 Qc8 14. d5 c5 15. Qc2 Qf5 16. Qd2 Re7 17. b4 b6 18. bxc5 bxc5 19. Bxc5 Rxe2 20. Qxe2 Bxf3 21. gxf3 Bxc5 22. d6 Ne6 23. d7 Rd8 24. Rd5 Qg6+ 25. Kh1 Bb6 26. c5 Bc7 27. Rg1 Qh6 28. Rg2 g6 29. c6 Qc1+ 30. Rd1 Qxc6 31. Qe3 Rxd7 32. Rc1 Qb6 33. Qh6 Qb2 34. Rcg1 Nf4 35. Rg4 Qe5 36. Rh4 f5 37. Qxh7+ Kf8 38. Qh6+ Qg7 39. Qg5 Ne6 40. Qe3 Qf6 41. Rb4 Bb6 0-1

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2009.09.10"]
[Round "1"]
[White "Krupka, David"]
[Black "Moran Venegas, Mario"]
[Result "1-0"]
[ECO "D80"]
[WhiteElo "2144"]
[BlackElo "1762"]
[PlyCount "109"]
[EventDate "2009.09.10"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 e6 5. cxd5 exd5 6. Bxf6 Qxf6 7. Nxd5 Qd6 8. Nc3 Bg7 9. e3 0-0 10. Nf3 Bg4 11. Be2 Nd7 12. Rc1 c6 13. 0-0 Rae8 14. h3 Bf5 15. Bd3 Bxd3 16. Qxd3 Ne5 17. Nxe5 Bxe5 18. Ne4 Qd8 19. Nc5 Bb8 20. Rc3 Re7 21. Rb3 Qc7 22. f4 Qc8 23. Ne4 Kg7 24. Ng5 h6 25. Nf3 Rfe8 26. Ne5 Rd8 27. Qc2 Bxe5 28. fxe5 Re6 29. Rc3 Rd5 30. b4 a6 31. Qf2 Qd7 32. Rc4 Qe7 33. a3 Qc7 34. Rcc1 Qe7 35. Rcd1 f5 36. exf6+ Rxf6 37. Qxf6+ Qxf6 38. Rxf6 Kxf6 39. Kf2 Rf5+ 40. Ke2 Ke6 41. Rf1 Rxf1 42. Kxf1 Kd5 43. Ke2 Ke4 44. g3 h5 45. Kf2 g5 46. g4 hxg4 47. hxg4 b6 48. a4 c5 49. dxc5 bxc5 50. bxc5 Kd5 51. c6 Kxc6 52. e4 Kd6 53. Ke3 Ke5 54. a5 Kd6 55. Kd4 1-0

[Event "Scarborough CC Spring op"]
[Site "Toronto"]
[Date "2009.06.11"]
[Round "7"]
[White "Perez, Michael"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1806"]
[BlackElo "2216"]
[PlyCount "49"]
[EventDate "2009.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. d4 Bd6 7. h3 0-0 8. Bd3 Re8+ 9. Be3 Qb6 10. Qc1 Qa5+ 11. c3 Nd7 12. 0-0 Nf8 13. b4 Qh5 14. Bf4 Bxf4 15. Qxf4 Ng6 16. Qh2 Be6 17. c4 Qh6 18. Bxg6 Qxg6 19. Rac1 Qd3 20. Rfd1 Qa3 21. d5 cxd5 22. cxd5 Bxd5 23. Qc7 Bxf3 24. gxf3 Qxf3 25. Rd8 0-1

[Event "Scarborough CC Spring op"]
[Site "Toronto"]
[Date "2009.05.14"]
[Round "3"]
[White "Peng, Bill"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2022"]
[BlackElo "2216"]
[PlyCount "67"]
[EventDate "2009.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nc6 5. Be2 Bg4 6. h3 Bh5 7. 0-0 e6 8. c4 dxc4 9. Bxc4 Bxf3 10. Qxf3 Qxd4 11. Bb5 Qb6 12. Nc3 Rc8 13. Be3 Qa5 14. a3 a6 15. b4 Qd8 16. Bxc6+ Rxc6 17. Ne4 Nf6 18. Bg5 Be7 19. Bxf6 Bxf6 20. Rad1 Qe7 21. Nc5 Rc7 22. Nxa6 Rc3 23. Qe4 0-0 24. Nc5 Rxa3 25. Rd7 Qe8 26. Rxb7 Qd8 27. Nd7 Re8 28. Qc6 Ra8 29. Rd1 Qc8 30. b5 Bd8 31. Ne5 Qxc6 32. bxc6 f6 33. Nc4 Be7 34. c7 1-0

[Event "Scarborough CC Spring op"]
[Site "Toronto"]
[Date "2009.05.07"]
[Round "2"]
[White "Krupka, David"]
[Black "Moysoski, Randy"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2216"]
[BlackElo "1915"]
[PlyCount "96"]
[EventDate "2009.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 d5 2. d4 dxe4 3. Nc3 Nf6 4. f3 Bf5 5. Bc4 e6 6. Bg5 Bb4 7. a3 Ba5 8. b4 Bb6 9. fxe4 Bxd4 10. Nge2 Bxc3+ 11. Nxc3 Qxd1+ 12. Rxd1 Bg4 13. Rd3 c6 14. 0-0 Nbd7 15. Bb3 Bh5 16. Rg3 Bg6 17. e5 Nd5 18. Nxd5 cxd5 19. Ba4 Rc8 20. c3 a6 21. Bxd7+ Kxd7 22. Rc1 Rc4 23. Be3 Rhc8 24. Bc5 Re4 25. Re3 Rc4 26. Rf1 Kc6 27. Bd4 Kb5 28. Ra1 Ka4 29. Re2 h6 30. Kf2 Be4 31. g3 Rf8 32. Ke3 f5 33. Rf2 g5 34. Kd2 f4 35. gxf4 gxf4 36. Rg1 f3 37. Rg7 Rb8 38. Ba7 Rbc8 39. Bc5 Rc7 40. Rxc7 Kxa3 41. Re7 a5 42. Rxe6 axb4 43. Bxb4+ Kb3 44. Rf1 d4 45. Rb6 Rc6 46. Bc5+ Rxb6 47. Bxb6 dxc3+ 48. Kc1 c2 1-0

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2009.03.26"]
[Round "5"]
[White "Krupka, David"]
[Black "Henry, Liam"]
[Result "1/2-1/2"]
[ECO "D91"]
[WhiteElo "2221"]
[BlackElo "2248"]
[PlyCount "83"]
[EventDate "2009.02.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bh4 Nxc3 6. bxc3 Bg7 7. e3 c5 8. cxd5 cxd4 9. cxd4 Qxd5 10. Nf3 Nc6 11. Be2 0-0 12. 0-0 Bf5 13. Qa4 e5 14. dxe5 Nxe5 15. Rfd1 Qe4 16. Qxe4 Bxe4 17. Nxe5 Bxe5 18. Rac1 Rac8 19. Bf3 Bxf3 20. gxf3 Kg7 21. Kg2 Rfe8 22. Bg3 Rxc1 23. Rxc1 Bxg3 24. hxg3 Re5 25. Rc7 Rb5 26. a4 Rb2 27. a5 a6 28. g4 h6 29. f4 Kf6 30. g5+ hxg5 31. fxg5+ Ke6 32. Kg3 Rb5 33. f4 Rxa5 34. Rxb7 Ra1 35. Kf3 a5 36. Ke4 Ra4+ 37. Kd3 Ra3+ 38. Kd4 a4 39. e4 Rf3 40. Rb6+ Kd7 41. Ke5 Ke7 42. f5 1/2-1/2

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2009.03.19"]
[Round "4"]
[White "Hall, John2222"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B16"]
[WhiteElo "2204"]
[BlackElo "2221"]
[PlyCount "91"]
[EventDate "2009.02.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6 6. c3 Bf5 7. Nf3 Qc7 8. g3 Nd7 9. Bg2 Be4 10. 0-0 e6 11. Re1 f5 12. Ng5 Nf6 13. Bxe4 Nxe4 14. Qh5 Nxg5 15. Bxg5 Qd7 16. Bf6 Rg8 17. Qxf5 Rg6 18. Qf3 Qd5 19. Re3 Qxf3 20. Rxf3 Be7 21. Bxe7 Kxe7 22. Re1 h5 23. h4 Rd8 24. Re5 Rd5 25. Rxd5 cxd5 26. Kf1 Rg8 27. Ke2 f5 28. Kd3 Rc8 29. Re3 b5 30. b3 Kd6 31. Re1 Rc6 32. Rc1 Ra6 33. Rc2 Kd7 34. Ke3 Rc6 35. Kf4 b4 36. c4 dxc4 37. bxc4 a5 38. c5 Rc8 39. Ke5 a4 40. d5 exd5 41. Kxd5 Kc7 42. Kc4 Rb8 43. Rb2 b3 44. axb3 axb3 45. Rxb3 Re8 46. Re3 1-0

[Event "Scarborough CC-ch"]
[Site "Toronto"]
[Date "2009.03.12"]
[Round "3"]
[White "Villalobos, Oscar"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2061"]
[BlackElo "2221"]
[PlyCount "64"]
[EventDate "2009.02.26"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. c3 cxd4 5. exd4 Nc6 6. Bg5 Bg4 7. Nbd2 Ne4 8. Bf4 Nxd2 9. Qxd2 Bxf3 10. gxf3 Qa5 11. Bh3 e6 12. a3 Be7 13. Rg1 g6 14. Kf1 Qd8 15. Bh6 Bf6 16. Re1 Qd6 17. Bf4 Qd7 18. Bh6 Qd6 19. Kg2 Ne7 20. Kh1 Rc8 21. Qe2 a6 22. Rg4 Nf5 23. Bf4 Qc6 24. Be5 Bxe5 25. Qxe5 0-0 26. Qf6 Qb6 27. Rg5 Ng7 28. Re2 Qd8 29. Qf4 b5 30. Rg1 Rc6 31. Bg4 Qh4 32. Rg3 Nh5 0-1

[Event "Scarborough CC Jack Frost"]
[Site "Toronto"]
[Date "2009.02.19"]
[Round "7"]
[White "Krupka, David"]
[Black "Sellars, Karl"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "2221"]
[BlackElo "2196"]
[PlyCount "65"]
[EventDate "2009.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 c5 2. e3 Nf6 3. Nf3 d5 4. c4 cxd4 5. exd4 g6 6. Nc3 Bg7 7. Be3 0-0 8. c5 b6 9. b4 Bg4 10. Be2 Ne4 11. Rc1 a5 12. a3 axb4 13. axb4 bxc5 14. bxc5 Ra3 15. Nxe4 dxe4 16. Ne5 Bxe5 17. Bxg4 Rd3 18. Qa4 Bxd4 19. Bh6 Bc3+ 20. Kf1 Rd4 21. Qc2 Bd2 22. Bxd2 Rxd2 23. Qxe4 Rd4 24. Qe2 Qa5 25. h4 e5 26. h5 Qa3 27. Re1 Qxc5 28. hxg6 fxg6 29. Be6+ Kg7 30. Qe3 h5 31. Rxh5 Rxf2+ 32. Qxf2 Rf4 33. Qxf4 1-0

[Event "Scarborough CC Jack Frost"]
[Site "Toronto"]
[Date "2009.01.29"]
[Round "4"]
[White "Armstrong, Robert J"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "D08"]
[WhiteElo "1845"]
[BlackElo "2221"]
[PlyCount "66"]
[EventDate "2009.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Bg4 6. Qb3 Qd7 7. Qxb7 Rb8 8. Qa6 f6 9. exf6 Nxf6 10. Nbd2 Bd6 11. h3 Bf5 12. Qa4 a5 13. g3 0-0 14. c5 Bxc5 15. Qc4+ Qd5 16. Bg2 Be6 17. Qxd5 Bxd5 18. 0-0 Rbe8 19. Re1 Re7 20. Nf1 Rb8 21. Nh4 Bxg2 22. Nxg2 Ne5 23. Nh2 Nc4 24. Bg5 Bd6 25. Bxf6 gxf6 26. Ng4 Kf7 27. Nf4 Bxf4 28. gxf4 Rxb2 29. e4 Nd2 30. Kg2 Nxe4 31. Rab1 Rxb1 32. Rxb1 Nc3 33. Kf3 Nxb1 0-1

[Event "Scarborough CC Jack Frost"]
[Site "Toronto"]
[Date "2009.01.15"]
[Round "2"]
[White "Wu, Aaron"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "B45"]
[WhiteElo "1995"]
[BlackElo "2221"]
[PlyCount "76"]
[EventDate "2009.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Bb4 7. Nxc6 bxc6 8. Bd3 d5 9. exd5 exd5 10. Bd2 Qe7+ 11. Qe2 Qxe2+ 12. Bxe2 0-0 13. 0-0 Bf5 14. a3 Bd6 15. Bd3 Bxd3 16. cxd3 Ng4 17. g3 Ne5 18. Bf4 Nf3+ 19. Kg2 Nh4+ 20. Kh3 Bxf4 21. Kxh4 Be5 22. Rac1 Rfb8 23. Na4 Bxb2 24. Nxb2 Rxb2 25. Rxc6 Rd2 26. Rc3 g6 27. Kg4 Kg7 28. Kf4 Re8 29. h4 Re6 30. f3 h5 31. Rfc1 Rde2 32. g4 Rf6+ 33. Kg3 Re3 34. Rf1 hxg4 35. Kxg4 Ra6 36. Kf4 d4 37. Rb3 Rf6+ 38. Kg4 Ra6 1/2-1/2

[Event "Scarborough CC Fall Swiss"]
[Site "Toronto"]
[Date "2008.12.18"]
[Round "8"]
[White "Armstrong, Robert J"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "D08"]
[WhiteElo "1804"]
[BlackElo "2262"]
[PlyCount "128"]
[EventDate "2008.10.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. e3 Bb4+ 6. Bd2 dxe3 7. fxe3 Nge7 8. Be2 Nf5 9. 0-0 Bxd2 10. Qxd2 Qxd2 11. Nbxd2 Nxe3 12. Rfc1 Ng4 13. Bd3 0-0 14. Re1 Re8 15. e6 f6 16. Bf5 Nge5 17. Rad1 Bxe6 18. Nxe5 Nxe5 19. Bxe6+ Rxe6 20. c5 Rae8 21. Re3 Kf7 22. Rb3 b6 23. cxb6 axb6 24. Nf3 Nxf3+ 25. gxf3 Re2 26. Rc1 R8e7 27. a3 Rd2 28. Rbc3 c5 29. b4 cxb4 30. axb4 Ree2 31. Rc6 Rg2+ 32. Kh1 Rxh2+ 33. Kg1 Rdg2+ 34. Kf1 Rb2 35. Kg1 Rh4 36. Rxb6 Rhxb4 37. Rc7+ Kg6 38. Rxb4 Rxb4 39. Kg2 Kh6 40. Rf7 Rf4 41. Kg3 g5 42. Re7 Kg6 43. Re8 h5 44. Rg8+ Kf5 45. Rh8 h4+ 46. Kg2 Rb4 47. Rf8 Rb2+ 48. Kg1 h3 49. Rh8 h2+ 50. Rxh2 Rxh2 51. Kxh2 Kf4 52. Kg2 Ke3 53. Kf1 Kxf3 54. Kg1 g4 55. Kf1 g3 56. Kg1 g2 57. Kh2 Kf2 58. Kh3 g1Q 59. Kh4 Kf3 60. Kh5 Kf4 61. Kh6 Kf5 62. Kh7 Ke6 63. Kh6 Qg8 64. Kh5 Qg5# 0-1

[Event "Scarborough CC Fall Swiss"]
[Site "Toronto"]
[Date "2008.12.04"]
[Round "6"]
[White "Moysoski, Randy"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "1804"]
[BlackElo "2262"]
[PlyCount "65"]
[EventDate "2008.10.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Ng5 Bf5 6. Bc4 e6 7. Ne2 Nd5 8. Ng3 Bg6 9. c3 Nd7 10. 0-0 Be7 11. f4 0-0 12. a3 Rc8 13. Ba2 b5 14. Qf3 N7b6 15. Kh1 c5 16. dxc5 Rxc5 17. N5e4 Rc7 18. f5 exf5 19. Nxf5 Nc4 20. Neg3 Ndb6 21. Nd4 a6 22. Bf4 Bd6 23. Rf2 Bxf4 24. Qxf4 Qd6 25. Qg5 Qe5 26. Qh4 Nd5 27. Re2 Qf4 28. Qh3 Nce3 29. Kg1 Qg4 30. Bxd5 Qxh3 31. Bxf7+ Bxf7 32. gxh3 Nc4 33. Ngf5 1-0

[Event "Scarborough CC Fall Swiss"]
[Site "Toronto"]
[Date "2008.10.30"]
[Round "1"]
[White "Krupka, David"]
[Black "Wilker, Marcus"]
[Result "1/2-1/2"]
[ECO "E26"]
[WhiteElo "2262"]
[BlackElo "1832"]
[PlyCount "74"]
[EventDate "2008.10.30"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 Nc6 7. Bd3 d6 8. Nf3 Qc7 9. Qc2 Ne7 10. 0-0 e5 11. Nd2 Bd7 12. f3 Ng6 13. d5 Qc8 14. Rb1 Rb8 15. Rf2 Ng8 16. Ne4 Ke7 17. Ng3 Nh6 18. e4 Qe8 19. Nh5 Rg8 20. Be3 f6 21. Nxg7 Rxg7 22. Bxh6 Rg8 23. g3 Nf4 24. Bxf4 exf4 25. g4 Qh5 26. Rg2 Qe5 27. Kf2 Kd8 28. Rbg1 Kc7 29. h4 h6 30. h5 Rg7 31. Qd2 Rbg8 32. Ke1 Qg5 33. Qf2 Be8 34. Bf1 Ba4 35. Bd3 Qe5 36. Qd2 Qg5 37. Qf2 Qe5 1/2-1/2

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2008.10.09"]
[Round "5"]
[White "Garel, Rick"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1901"]
[BlackElo "2262"]
[PlyCount "34"]
[EventDate "2008.09.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. f3 g6 4. Be3 Qb6 5. Qc1 Bg7 6. c4 dxe4 7. fxe4 Bxd4 8. Bxd4 Qxd4 9. Nc3 Nd7 10. Nf3 Qg7 11. Be2 e5 12. 0-0 Ne7 13. Qg5 h6 14. Qg3 0-0 15. Rad1 g5 16. Rd6 f5 17. Qh3 g4 1-0

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2008.10.02"]
[Round "4"]
[White "Krupka, David"]
[Black "Moffat, Andrei"]
[Result "1/2-1/2"]
[ECO "D94"]
[WhiteElo "2262"]
[BlackElo "2198"]
[PlyCount "40"]
[EventDate "2008.09.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 Bg7 5. Nf3 0-0 6. Be2 b6 7. 0-0 cxd4 8. exd4 d5 9. Bg5 Bb7 10. Ne5 Ne4 11. Bf4 Nxc3 12. bxc3 dxc4 13. Bxc4 Nd7 14. Re1 Nxe5 15. Bxe5 Bxe5 16. Rxe5 Rc8 17. Qe2 e6 18. Re3 Qd6 19. Bb3 Rfd8 20. Re1 Rc7 1/2-1/2

[Event "Toronto Howard Ridout op"]
[Site "Toronto"]
[Date "2008.09.11"]
[Round "1"]
[White "Krupka, David"]
[Black "Bossy, John"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "2262"]
[BlackElo "1863"]
[PlyCount "85"]
[EventDate "2008.09.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Nc3 Nc6 5. Nf3 Nf6 6. Bf4 a6 7. e3 Bg4 8. h3 Bxf3 9. Qxf3 e6 10. Bd3 Bd6 11. Bg5 Be7 12. 0-0 0-0 13. Rac1 Rc8 14. Qe2 Re8 15. Rfd1 Na5 16. Bb1 Nc4 17. b3 Nd6 18. f3 Nd7 19. Bf4 Bf8 20. g4 Rc6 21. Qh2 Qa5 22. Ne2 Rec8 23. h4 Nb5 24. Qf2 Nc3 25. Nxc3 Rxc3 26. Rxc3 Qxc3 27. Qe1 Qxe1+ 28. Rxe1 Ba3 29. Kf1 Rc1 30. Rxc1 Bxc1 31. Ke2 Ba3 32. Kd3 Kf8 33. Kc3 h6 34. e4 Ke7 35. b4 a5 36. bxa5 Bd6 37. Bxd6+ Kxd6 38. Bd3 Nb8 39. Bb5 e5 40. exd5 f6 41. Kc4 Na6 42. Bxa6 bxa6 43. h5 1-0

[Event "Toronto op"]
[Site "Toronto"]
[Date "1997.??.??"]
[Round "7"]
[White "Gregorz, Ralph"]
[Black "Krupka, David"]
[Result "1/2-1/2"]
[ECO "D34"]
[WhiteElo "2135"]
[BlackElo "2300"]
[PlyCount "51"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 e6 5. Bg2 d5 6. cxd5 exd5 7. d4 Be7 8. 0-0 0-0 9. Bg5 cxd4 10. Nxd4 Be6 11. Rc1 Qa5 12. Nxc6 bxc6 13. Qa4 Qb6 14. Qc2 Rac8 15. Na4 Qb5 16. b3 Rfe8 17. Nc5 Bg4 18. e3 h6 19. Bxf6 Bxf6 20. Rfe1 Bh5 21. Qd2 Bg6 22. Bf1 Qb6 23. Nd7 Qd8 24. Nxf6+ Qxf6 25. Qc3 Qxc3 26. Rxc3 1/2-1/2

[Event "Toronto op"]
[Site "Toronto"]
[Date "1997.??.??"]
[Round "5"]
[White "Kiviaho, Bob"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2330"]
[BlackElo "2300"]
[PlyCount "105"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Be3 Bd6 7. Qd2 0-0 8. Ne2 Re8 9. 0-0-0 a5 10. d5 c5 11. Nc3 Bd7 12. Nb5 Bxb5 13. Bxb5 Re7 14. Bf4 Na6 15. Rhe1 Rxe1 16. Rxe1 Bxf4 17. Qxf4 Nc7 18. Be2 Nxd5 19. Qc4 Nb4 20. a3 Na6 21. Bf3 Qd7 22. Qd5 Qxd5 23. Bxd5 Nc7 24. Bxb7 Rb8 25. Bc6 Kf8 26. Rd1 Ne6 27. Rd7 Rd8 28. Rxd8+ Nxd8 29. Bf3 Ke7 30. Kd2 Kd6 31. Kd3 Ne6 32. c3 f5 33. Kc4 g5 34. Kb5 Nf4 35. Kxa5 g4 36. Ba8 Nd3 37. b4 Nxf2 38. Kb6 cxb4 39. cxb4 Nd3 40. Kb5 h5 41. a4 f4 42. a5 h4 43. a6 f3 44. gxf3 g3 45. hxg3 hxg3 46. f4 Nxf4 47. a7 Ne6 48. Bg2 f5 49. a8Q Nc7+ 50. Kc4 Nxa8 51. Bxa8 f4 52. b5 Kc7 53. Kc5 1-0

[Event "Toronto op"]
[Site "Toronto"]
[Date "1997.??.??"]
[Round "3"]
[White "Krupka, David"]
[Black "Linskiy, Oleg M"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2300"]
[BlackElo "2415"]
[PlyCount "102"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 Nf6 5. Bg5 c6 6. e3 Be7 7. Bd3 Bxd3 8. Qxd3 Nbd7 9. 0-0 0-0 10. cxd5 exd5 11. Bxf6 Nxf6 12. Rab1 a5 13. a3 Bd6 14. Qc2 Qe7 15. g3 g6 16. Ne1 Ne4 17. Nxe4 dxe4 18. Qc4 a4 19. Nc2 Ra5 20. b4 Rh5 21. Rfd1 Qd7 22. Qf1 Rd5 23. Rdc1 Kg7 24. Ne1 f5 25. f4 exf3 26. Nxf3 h6 27. Rc2 g5 28. Qg2 Qe6 29. Re2 Qe4 30. Nd2 Qd3 31. Rb2 Qxa3 32. Nc4 Qc3 33. Nb6 a3 34. Rbc2 a2 35. Rxa2 Rb5 36. Nd7 Rf7 37. Nc5 Rxb4 38. h4 Bxc5 39. dxc5 Qxc5 40. Rac2 Qe5 41. h5 c5 42. Rcd2 Re4 43. Kh2 c4 44. Rb2 b5 45. Ra2 b4 46. Ra6 b3 47. Rd2 Rh4+ 48. Kg1 Qxe3+ 49. Qf2 Qxf2+ 50. Rxf2 Re4 51. Rd2 c3 0-1

[Event "Toronto op"]
[Site "Toronto"]
[Date "1997.??.??"]
[Round "6"]
[White "Krupka, David"]
[Black "Thiele, Frank"]
[Result "1-0"]
[ECO "E99"]
[WhiteElo "2300"]
[BlackElo "2075"]
[PlyCount "79"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. f3 f5 11. g4 Rf7 12. Nd3 a6 13. Be3 c5 14. a3 Rb8 15. b4 b6 16. Rb1 Kh8 17. Rb2 Qf8 18. Bf2 Bh6 19. h3 Ng8 20. Qb1 Ngf6 21. bxc5 dxc5 22. a4 a5 23. Kg2 Ba6 24. Ne1 Ne8 25. Nc2 Nd6 26. Na3 Bf4 27. Bd3 Qh6 28. Rh1 Be3 29. Qe1 Bf4 30. Ne2 fxe4 31. fxe4 Rbf8 32. Nxf4 Qxf4 33. Qe3 Qf3+ 34. Kh2 Qf4+ 35. Kg2 Qf3+ 36. Kh2 Rf4 37. Re1 Qxe3 38. Bxe3 Rf3 39. Kg2 R3f7 40. Rbb1 1-0

[Event "Toronto op"]
[Site "Toronto"]
[Date "1997.??.??"]
[Round "1"]
[White "Spraggett, Grant"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "2430"]
[BlackElo "2300"]
[PlyCount "112"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CAN"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. g3 0-0 6. Bg2 c5 7. 0-0 Nc6 8. e3 dxc4 9. bxc4 Qb6 10. Qb3 Na5 11. Qxb6 axb6 12. Na3 Rd8 13. Rfd1 Bd7 14. d3 Ba4 15. Rd2 Ne8 16. Ne1 Rd7 17. Bc3 Nd6 18. Rb2 Bd8 19. Rc1 Bc6 20. Bf1 Ba4 21. Nf3 f6 22. Nd2 e5 23. Bh3 Re7 24. d4 exd4 25. exd4 Nc6 26. d5 Ne5 27. Be6+ Rxe6 28. dxe6 Nd3 29. Rcb1 Nxb2 30. Bxb2 Bc6 31. Re1 Be7 32. Re3 b5 33. cxb5 Nxb5 34. Nxb5 Bxb5 35. Ba3 Rd8 36. Ne4 Bc6 37. Kf1 b6 38. Ke2 Rd4 39. Nc3 b5 40. Bb2 Rd8 41. a3 b4 42. Nb1 Rd6 43. f4 Bd5 44. f5 Bc4+ 45. Kf3 Bd3 46. Nd2 Bxf5 47. Nc4 Rxe6 48. Kf4 Rxe3 49. Kxe3 Be6 50. Kd3 bxa3 51. Bxa3 Kf7 52. Bc1 Bxc4+ 53. Kxc4 Ke6 54. Bf4 g5 55. Bc7 h6 56. Ba5 Ke5 0-1

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "9"]
[White "Krupka, David"]
[Black "Profit, Brian"]
[Result "1-0"]
[ECO "E43"]
[PlyCount "37"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. e3 b6 5. Nf3 Bb7 6. Bd3 cxd4 7. exd4 Bb4 8. 0-0 0-0 9. Bg5 h6 10. Bxf6 Qxf6 11. Ne4 Qf4 12. a3 Be7 13. Re1 d5 14. cxd5 Bxd5 15. Ne5 h5 16. Qxh5 Qh6 17. Qxh6 gxh6 18. Rac1 f5 19. Nc3 1-0

[Event "Toronto op"]
[Site "Toronto"]
[Date "1995.??.??"]
[Round "6"]
[White "Krupka, David"]
[Black "Southam, David"]
[Result "1/2-1/2"]
[ECO "B15"]
[BlackElo "2200"]
[PlyCount "10"]
[EventDate "1995.07.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Nf3 d5 5. e5 Bg4 1/2-1/2

[Event "London CAN op"]
[Site "London,Canada"]
[Date "1993.??.??"]
[Round "4"]
[White "Krupka, David"]
[Black "Coleman, Mark"]
[Result "1-0"]
[ECO "B74"]
[PlyCount "67"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 0-0 8. 0-0 Nc6 9. Nb3 Be6 10. f4 Na5 11. f5 Bc4 12. Nxa5 Bxe2 13. Qxe2 Qxa5 14. Bd4 Nd7 15. Bxg7 Kxg7 16. Nd5 Rae8 17. Kh1 Nb6 18. c4 Qc5 19. b3 Qd4 20. Rad1 Qe5 21. Nxb6 axb6 22. Rd5 Qc3 23. Rb5 Ra8 24. Rxb6 Ra3 25. Rxb7 Rfa8 26. fxg6 Rxa2 27. Qf3 Qf6 28. Qxf6+ exf6 29. Rxf7+ Kxg6 30. R7xf6+ Kg7 31. Rf7+ Kg8 32. h4 Rb2 33. R7f3 Raa2 34. Rg3+ 1-0

[Event "London CAN op"]
[Site "London,Canada"]
[Date "1993.??.??"]
[Round "5"]
[White "Krupka, David"]
[Black "Kirton, Dale"]
[Result "1/2-1/2"]
[ECO "D35"]
[PlyCount "58"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c4 c6 4. cxd5 exd5 5. Nc3 Be7 6. Bf4 Nf6 7. e3 0-0 8. Qc2 Nbd7 9. Be2 Re8 10. 0-0 Nh5 11. Bg3 Nxg3 12. hxg3 Nf6 13. Bd3 Bd6 14. a3 Qe7 15. Bf5 Ne4 16. Bxc8 Raxc8 17. Nxe4 dxe4 18. Nd2 Bb8 19. Rfc1 Red8 20. Qd1 Rd5 21. b4 Bd6 22. Nb3 Qf6 23. Qg4 Qh6 24. Kf1 f5 25. Qh4 Qg6 26. Ke2 f4 27. gxf4 Qxg2 28. Rg1 Qf3+ 29. Kd2 Qh5 1/2-1/2

[Event "London CAN op"]
[Site "London,Canada"]
[Date "1993.??.??"]
[Round "1"]
[White "Krupka, David"]
[Black "Loo, James"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "59"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 c6 2. e4 e6 3. Nf3 f6 4. Bd3 Na6 5. c3 Ne7 6. Nbd2 g6 7. e5 Bg7 8. Ne4 0-0 9. exf6 Bxf6 10. Nxf6+ Rxf6 11. Bg5 Rf8 12. h4 Qe8 13. h5 Nf5 14. g4 Ne7 15. Bxe7 Qxe7 16. hxg6 hxg6 17. Ne5 Qf6 18. Qc2 Nc5 19. Bxg6 d6 20. Nf7 Qf3 21. Rh8+ Kg7 22. Rh7+ Kf6 23. g5+ Ke7 24. Ne5+ Kd8 25. Nxf3 Rxf3 26. dxc5 d5 27. 0-0-0 b5 28. Qe2 Rf8 29. Qe5 Bd7 30. Qd6 1-0

[Event "London CAN op"]
[Site "London,Canada"]
[Date "1993.??.??"]
[Round "8"]
[White "Krupka, David"]
[Black "Lou, Meng"]
[Result "1/2-1/2"]
[ECO "C54"]
[PlyCount "47"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. 0-0 Bxc3 9. d5 Bf6 10. Re1 0-0 11. Rxe4 Ne7 12. Bg5 Ng6 13. Bxf6 Qxf6 14. d6 Qxd6 15. Qxd6 cxd6 16. Rd1 b6 17. Rxd6 Bb7 18. Re3 Rac8 19. b3 Bc6 20. Nd4 Rfe8 21. Nxc6 Rxe3 22. fxe3 dxc6 23. Rd7 Ne5 24. Rxa7 1/2-1/2

[Event "London CAN op"]
[Site "London,Canada"]
[Date "1993.??.??"]
[Round "10"]
[White "Krupka, David"]
[Black "Vucko, Ignac"]
[Result "1-0"]
[ECO "E88"]
[PlyCount "59"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d6 2. c4 Nf6 3. Nc3 g6 4. e4 Bg7 5. f3 0-0 6. Be3 c6 7. Bd3 e5 8. d5 Nh5 9. Qd2 c5 10. Nge2 f5 11. Rb1 f4 12. Bf2 a6 13. a3 Nd7 14. Na4 Rb8 15. Nec3 b6 16. b4 Qc7 17. 0-0 Rb7 18. Rb3 b5 19. cxb5 c4 20. bxa6 Ra7 21. Nb5 cxb3 22. Nxc7 Rxc7 23. Rc1 Rxc1+ 24. Qxc1 Nhf6 25. b5 Nc5 26. Nxc5 dxc5 27. Bxc5 Rf7 28. Bb4 Nxd5 29. Qxc8+ Rf8 30. Bxf8 1-0

[Event "London CAN op"]
[Site "London,Canada"]
[Date "1993.??.??"]
[Round "3"]
[White "Patterson, Roger"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "C81"]
[PlyCount "41"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 Na5 11. Nbd2 Nxb3 12. axb3 Nxd2 13. Bxd2 c5 14. Rxa6 Rb8 15. Ra7 b4 16. Rda1 0-0 17. Qa6 Re8 18. Qa5 Qxa5 19. R1xa5 Bf5 20. Bf4 Rb6 21. Rxe7 1-0

[Event "London CAN op"]
[Site "London,Canada"]
[Date "1993.??.??"]
[Round "9"]
[White "Redhead, Glenn"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "B52"]
[PlyCount "86"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Qe2 e6 5. 0-0 a6 6. Bxd7+ Nxd7 7. d4 cxd4 8. Nxd4 Ngf6 9. Nc3 Be7 10. Be3 Rc8 11. Nb3 b5 12. f3 Ne5 13. Rad1 Nc4 14. Bc1 0-0 15. Kh1 Qc7 16. Nd2 Nb6 17. a3 Nfd7 18. Ndb1 Bf6 19. Na2 d5 20. exd5 Nxd5 21. c3 N7b6 22. Nb4 Nxb4 23. axb4 Nd5 24. Rfe1 Rfd8 25. Qe4 Qb8 26. Nd2 Bxc3 27. bxc3 Nxc3 28. Qg4 Nxd1 29. Rxd1 Rxc1 30. Rxc1 Rxd2 31. Qf4 Rd8 32. Qe4 Qc7 33. Qe1 Qd6 34. h3 h6 35. Qe4 Qd5 36. Qf4 Qd2 37. Qc7 Qd7 38. Qb6 Qd2 39. Rc6 Qe1+ 40. Kh2 Qe5+ 41. Kg1 Qe1+ 42. Kh2 Qe5+ 43. Kg1 Rd1+ 0-1

[Event "London CAN op"]
[Site "London,Canada"]
[Date "1993.??.??"]
[Round "6"]
[White "Surlan, Dan"]
[Black "Krupka, David"]
[Result "0-1"]
[ECO "B31"]
[PlyCount "126"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. e5 Nd5 5. 0-0 g6 6. Re1 Bg7 7. c3 0-0 8. d4 cxd4 9. cxd4 Nc7 10. Bf1 d6 11. Bf4 dxe5 12. dxe5 Qxd1 13. Rxd1 Bg4 14. Nbd2 Ne6 15. Bg3 Ned4 16. Nxd4 Nxd4 17. f3 Bf5 18. Nc4 Nc6 19. a4 Rfd8 20. f4 Rab8 21. Bf2 Rxd1 22. Rxd1 Bc2 23. Ra1 Rd8 24. a5 a6 25. Rc1 Bd3 26. Bb6 Rd7 27. e6 fxe6 28. Rd1 Bxf1 29. Rxf1 Rd5 30. Re1 e5 31. fxe5 Nxe5 32. Nxe5 Bxe5 33. g3 Kf7 34. Kf2 Bxb2 35. Rb1 Bd4+ 36. Kf3 Bxb6 37. Rxb6 Rxa5 38. Rxb7 Ra2 39. h4 Ra3+ 40. Kg4 Ra5 41. Kf4 Kf6 42. g4 Ra4+ 43. Kf3 h6 44. g5+ hxg5 45. hxg5+ Kxg5 46. Rxe7 Ra1 47. Re5+ Kh6 48. Re6 a5 49. Re5 a4 50. Kg2 a3 51. Ra5 g5 52. Kh2 Kh5 53. Ra4 Kg6 54. Ra5 Kh5 55. Ra4 g4 56. Ra5+ Kh4 57. Kg2 Ra2+ 58. Kf1 Kg3 59. Rh5 Ra1+ 60. Ke2 Kg2 61. Ra5 g3 62. Ra8 a2 63. Ra7 Rf1 0-1

[Event "Montreal Quebec U1600 op"]
[Site "Montreal"]
[Date "1989.07.27"]
[Round "6"]
[White "Hettstedt, Kay"]
[Black "Krupka, David"]
[Result "1-0"]
[ECO "C22"]
[WhiteElo "1600"]
[BlackElo "1589"]
[PlyCount "83"]
[EventDate "1989.07.22"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "CAN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qa4 Bc5 5. Nf3 h6 6. Bc4 d6 7. 0-0 Nge7 8. c3 0-0 9. Bf4 Ng6 10. Bg3 Qe7 11. Nbd2 Be6 12. Bd5 Bxd5 13. exd5 Nce5 14. Rfe1 Qd7 15. Qc2 Nxf3+ 16. Nxf3 Rfe8 17. a4 a6 18. b4 Bb6 19. c4 Ba7 20. Rad1 Rxe1+ 21. Rxe1 Rc8 22. h4 Re8 23. Rxe8+ Qxe8 24. c5 Qe7 25. cxd6 cxd6 26. h5 Ne5 27. Nh4 Qd7 28. Bxe5 dxe5 29. Qc4 Bb8 30. Nf3 Bd6 31. b5 axb5 32. axb5 Kh8 33. Nd2 Qc7 34. Qxc7 Bxc7 35. Nc4 f6 36. d6 Bd8 37. d7 Kg8 38. Nd6 Kf8 39. Nf5 b6 40. g4 Kf7 41. Kg2 Bc7 42. Kf3 1-0

