[Event "Dulles Skyline op-B"]
[Site "Dulles"]
[Date "2022.10.10"]
[Round "5"]
[White "Karell, Leif K"]
[Black "Srinivasan, Arjun"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1727"]
[BlackElo "1685"]
[PlyCount "68"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 d5 5. Nbd2 Nf6 6. Bg2 Be7 7. 0-0 0-0 8. h3 h6 9. Kh2 dxe4 10. dxe4 e5 11. c3 Be6 12. Qe2 Qc7 13. Nh4 Qd7 14. Nc4 Rad8 15. Ne3 Qd3 16. Qf3 Nh7 17. Rd1 Qa6 18. Rxd8 Rxd8 19. Nhf5 Bf8 20. Ng4 h5 21. Nge3 g6 22. Bf1 Ng5 23. Qg2 b5 24. Nh4 Bxh3 25. Qh1 Bxf1 26. Qxf1 Nxe4 27. Qg2 Nf6 28. b3 Bg7 29. c4 b4 30. Nd5 Nxd5 31. cxd5 Nd4 32. Bg5 Bf6 33. Be3 Bxh4 34. gxh4 Qd6 0-1

[Event "Dulles Skyline op-B"]
[Site "Dulles"]
[Date "2022.10.10"]
[Round "6"]
[White "Murugan Ayyappan, Adhiraiyan"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1482"]
[BlackElo "1727"]
[PlyCount "126"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 g6 4. Nd2 Bg7 5. Bd3 0-0 6. Ngf3 b6 7. c3 Bb7 8. Qe2 Nbd7 9. 0-0 c5 10. Rfe1 Ne4 11. Rad1 Nxd2 12. Qxd2 c4 13. Bc2 Nf6 14. h3 b5 15. Qe2 e6 16. Ne5 Nd7 17. Nxd7 Qxd7 18. e4 dxe4 19. Bxe4 Bxe4 20. Qxe4 Rfe8 21. Qe3 Rad8 22. Qf3 a6 23. Bg5 f6 24. Bh4 Kf7 25. g4 Qd5 26. Qxd5 exd5 27. Kf1 Rd7 28. Ra1 Rxe1+ 29. Kxe1 Bf8 30. b4 a5 31. a3 Ra7 32. Rc1 Bh6 33. bxa5 Bxc1 34. Kd1 Bxa3 35. Bg3 Rxa5 36. Kc2 b4 37. cxb4 Bxb4 38. Bc7 Ra2+ 39. Kb1 Rxf2 40. Bg3 Rg2 41. Bf4 Ba3 42. Be3 c3 43. h4 c2+ 44. Ka1 Re2 45. Bf4 h6 46. g5 hxg5 47. hxg5 fxg5 48. Bxg5 Ke6 49. Bh6 Bf8 50. Bc1 Bg7 51. Kb2 Bxd4+ 52. Kb3 Re1 53. Kxc2 Rxc1+ 54. Kxc1 g5 55. Kd1 g4 56. Ke2 g3 57. Kf3 Bf2 58. Kg2 d4 59. Kf1 d3 60. Kg2 d2 61. Kh3 d1Q 62. Kg2 Kf5 63. Kh3 Qh1# 0-1

[Event "Dulles Skyline op-B"]
[Site "Dulles"]
[Date "2022.10.09"]
[Round "4"]
[White "Charles, Lwanga"]
[Black "Karell, Leif K"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1597"]
[BlackElo "1727"]
[PlyCount "52"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. c3 Bxc5 6. b4 Bf8 7. Qg4 h5 8. Qg3 a5 9. b5 g6 10. Bd3 Ne7 11. Bg5 Qc7 12. Bf6 Rg8 13. Nf3 Nd7 14. Qh4 Nc5 15. Bc2 Bd7 16. a4 Nf5 17. Qh3 Bg7 18. Bxg7 Rxg7 19. 0-0 0-0-0 20. Re1 b6 21. Nbd2 Kb8 22. Nd4 Nb7 23. Rac1 Rc8 24. N4b3 Nc5 25. Nd4 Nb7 26. N4b3 Nc5 1/2-1/2

[Event "Dulles Skyline op-B"]
[Site "Dulles"]
[Date "2022.10.09"]
[Round "3"]
[White "Karell, Leif K"]
[Black "Deng, Michael"]
[Result "1-0"]
[ECO "B74"]
[WhiteElo "1727"]
[BlackElo "1527"]
[PlyCount "55"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nc6 7. Be3 Bg7 8. Be2 0-0 9. Nb3 Be6 10. 0-0 a6 11. Bf3 Qc7 12. Nd5 Bxd5 13. exd5 Nb8 14. Qd2 Nbd7 15. Qf2 Rac8 16. c3 Nc5 17. Rad1 b5 18. Nd4 Nfd7 19. Nc6 Rfe8 20. Bd4 e6 21. Bxg7 Kxg7 22. dxe6 Rxe6 23. Bd5 Ree8 24. f5 f6 25. Nd4 Ne5 26. fxg6 hxg6 27. Qxf6+ Kh7 28. Rf4 1-0

[Event "Dulles Skyline op-B"]
[Site "Dulles"]
[Date "2022.10.08"]
[Round "2"]
[White "Ganapatiraju, Sree Chetan Varma"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1613"]
[BlackElo "1727"]
[PlyCount "114"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. c3 Bd6 5. Bg3 b6 6. Nf3 Bb7 7. Nbd2 0-0 8. Bd3 Ne4 9. 0-0 f5 10. Bxe4 Bxg3 11. hxg3 fxe4 12. Ne5 Nd7 13. Nxd7 Qxd7 14. Qe2 Rf6 15. f3 exf3 16. Nxf3 Raf8 17. Ne5 Qe8 18. Rxf6 gxf6 19. Nf3 Qg6 20. Qf2 Ba6 21. Re1 Bd3 22. Nh4 Qg7 23. Rc1 c5 24. dxc5 bxc5 25. b4 Qc7 26. Qf4 e5 27. Qg4+ Kh8 28. Rd1 c4 29. Qe6 d4 30. exd4 exd4 31. Re1 dxc3 32. Nf5 Qb6+ 33. Qxb6 axb6 34. Rc1 Bxf5 35. Rxc3 Bd3 36. Kf2 Re8 37. a4 Re2+ 38. Kf3 Ra2 39. a5 bxa5 40. bxa5 Rxa5 41. Ke3 Re5+ 42. Kd4 Re2 43. Ra3 Kg7 44. Rxd3 cxd3 45. Kxd3 Rxg2 46. Ke3 Rxg3+ 47. Kf2 Ra3 48. Kg2 Kg6 49. Kg1 Ra2 50. Kf1 h5 51. Kg1 Kf5 52. Kf1 Kf4 53. Kg1 Kg3 54. Kf1 h4 55. Ke1 h3 56. Kf1 h2 57. Ke1 h1R# 0-1

[Event "Dulles Skyline op-B"]
[Site "Dulles"]
[Date "2022.10.08"]
[Round "1"]
[White "Karell, Leif K"]
[Black "Pressman, Daniel P"]
[Result "0-1"]
[ECO "B57"]
[WhiteElo "1727"]
[BlackElo "1739"]
[PlyCount "50"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nde2 e6 8. Bb3 Bd7 9. 0-0 Be7 10. Kh1 Ng4 11. Qe1 0-0-0 12. h3 Nf6 13. Be3 Qc7 14. Nb5 Qb8 15. Nec3 a6 16. Nd4 Nxd4 17. Bxd4 Bc6 18. Rd1 Qc7 19. Qe3 Rd7 20. Bb6 Qb8 21. f3 Bd8 22. Ba7 Qc7 23. Na4 Bxa4 24. Bxa4 b5 25. Bb3 Qxa7 0-1

[Event "Virginia Seniors op"]
[Site "Dulles"]
[Date "2021.07.11"]
[Round "5"]
[White "Karell, Leif K"]
[Black "Farrell, John F"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "1865"]
[BlackElo "1925"]
[PlyCount "44"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. dxe5 Be7 6. 0-0 Nc5 7. Be3 Nxd3 8. Qxd3 0-0 9. Nc3 c6 10. Ne2 Na6 11. c3 Nc5 12. Qc2 Ne4 13. Ng3 Nxg3 14. hxg3 Bg4 15. Nd4 Qd7 16. f3 c5 17. Ne2 Bf5 18. Qd2 b6 19. Nf4 Rad8 20. Ne2 Rfe8 21. Rad1 Qc8 22. b3 Qc6 1/2-1/2

[Event "Virginia Seniors op"]
[Site "Dulles"]
[Date "2021.07.11"]
[Round "4"]
[White "Karell, Leif K"]
[Black "Snow, Peter"]
[Result "1-0"]
[ECO "D32"]
[WhiteElo "1865"]
[BlackElo "1750"]
[PlyCount "54"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c5 5. cxd5 exd5 6. e3 Nc6 7. h3 c4 8. Be2 Bb4 9. 0-0 0-0 10. Ne5 Re8 11. f4 Bxc3 12. bxc3 Ne4 13. Qc2 Ng3 14. Rf2 Bf5 15. Qb2 Nxe5 16. fxe5 Re6 17. Rxf5 Nxf5 18. Bg4 Rb6 19. Qc2 Nh4 20. e4 Ng6 21. Ba3 Nf4 22. Rf1 Qg5 23. Bc1 Nxh3+ 24. Bxh3 Qg6 25. Bf5 Qc6 26. Bxh7+ Kxh7 27. exd5+ Qg6 1-0

[Event "Virginia Seniors op"]
[Site "Dulles"]
[Date "2021.07.10"]
[Round "3"]
[White "Al Hariri, Saad"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "1707"]
[BlackElo "1865"]
[PlyCount "62"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Nf6 5. Nc3 Nbd7 6. Bd2 a6 7. Rc1 Bd6 8. Bd3 dxc4 9. Bxc4 b5 10. Bd3 c5 11. 0-0 Bb7 12. Re1 Qb8 13. h3 h6 14. Bb1 g5 15. e4 cxd4 16. Nxd4 Bh2+ 17. Kh1 g4 18. h4 Be5 19. Be3 b4 20. Na4 Nxe4 21. Qxg4 Ndf6 22. Qh3 Rg8 23. Nc6 Qc7 24. Bb6 Qd6 25. Bxe4 Nxe4 26. Red1 Nd2 27. Qe3 Bxc6 28. Rxc6 Qxc6 29. Qh3 Qxa4 30. Rxd2 Rc8 31. g3 Qc6+ 0-1

[Event "Virginia Seniors op"]
[Site "Dulles"]
[Date "2021.07.10"]
[Round "1"]
[White "Covey, Theodore"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "B29"]
[BlackElo "1865"]
[PlyCount "68"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 d5 5. exd5 Nxd5 6. Bb5 Bg4 7. dxc5 Nxc3 8. Qxd8+ Rxd8 9. bxc3 e5 10. Be3 Bxf3 11. gxf3 Be7 12. 0-0 0-0 13. Rab1 Rd7 14. Rfd1 Rfd8 15. Rxd7 Rxd7 16. Bxc6 bxc6 17. c4 f5 18. f4 exf4 19. Bxf4 Bxc5 20. c3 Kf7 21. Kf1 g6 22. f3 Bb6 23. Ke2 Ke6 24. Re1 Kf7 25. Rb1 Bd8 26. Rb3 g5 27. Bg3 Bb6 28. a4 Re7+ 29. Kf1 Re3 30. Kg2 f4 31. Rxb6 axb6 32. Bf2 Re2 33. Kf1 Ra2 34. Bxb6 Rxa4 0-1

[Event "Virginia Seniors op"]
[Site "Dulles"]
[Date "2021.07.10"]
[Round "2"]
[White "Karell, Leif K"]
[Black "Enkhbat, Tegshsuren"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1865"]
[BlackElo "2264"]
[PlyCount "36"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 c6 3. c4 Nf6 4. Nc3 a6 5. h3 dxc4 6. e4 b5 7. e5 Nd5 8. Ne4 h6 9. Be2 e6 10. 0-0 Nd7 11. Qc2 Bb7 12. b3 cxb3 13. Qxb3 Be7 14. Ba3 b4 15. Bxb4 Nxb4 16. Nc5 Bxc5 17. dxc5 a5 18. a3 Ba6 0-1

[Event "Washington op"]
[Site "Washington DC "]
[Date "2015.10.12"]
[Round "9"]
[White "Currie, James"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2043"]
[BlackElo "1961"]
[PlyCount "50"]
[EventDate "2015.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 168 Extra"]
[Source "ChessBase"]
[SourceDate "2015.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.29"]
[SourceQuality "1"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. g3 Bg7 5. Bg2 e5 6. exd5 cxd5 7. c4 dxc4 8. dxc4 Ne7 9. b4 0-0 10. Bb2 Nbc6 11. a3 Rb8 12. Ne2 Bg4 13. Nb3 Nd4 14. Nbxd4 exd4 15. f3 Be6 16. Rc1 Nf5 17. Qd2 Ne3 18. Nxd4 Nxc4 19. Rxc4 Bxc4 20. Kf2 Qb6 21. Rd1 Rbd8 22. Qc3 Bb5 23. f4 Rxd4 24. Kf3 Rfd8 25. Rxd4 Bxd4 0-1

[Event "Washington op"]
[Site "Washington DC "]
[Date "2015.10.11"]
[Round "8"]
[White "Karell, Leif K"]
[Black "Mays, Shelly"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1961"]
[BlackElo "2033"]
[PlyCount "119"]
[EventDate "2015.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 168 Extra"]
[Source "ChessBase"]
[SourceDate "2015.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.29"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 Nbd7 6. Be3 e5 7. Qd2 Be7 8. 0-0 0-0 9. h3 Bh5 10. a4 Re8 11. dxe5 dxe5 12. Qd3 Bb4 13. Rfd1 Qc7 14. Nh4 Rad8 15. Bxh5 Nxh5 16. Qc4 Qa5 17. Na2 Bf8 18. Nc3 Nf4 19. g3 Ne6 20. Nf5 Nb6 21. Bxb6 Qxb6 22. Ne3 Rd4 23. Qa2 Ng5 24. Nf5 Rb4 25. a5 Qc5 26. Rd7 Re6 27. Kg2 Nxe4 28. Nxe4 Rxe4 29. b4 Rxb4 30. Rad1 g6 31. Nd6 Be7 32. c3 Qxc3 33. Nc8 Bf8 34. R1d3 Qb2 35. Qxb2 Rxb2 36. Rf3 f5 37. g4 e4 38. Rf4 Bh6 39. gxf5 gxf5 40. Rxf5 Bf8 41. Rd8 Rg6+ 42. Kf1 Kg7 43. Rdxf8 e3 44. R5f7+ Kh6 45. Rf6 exf2 46. Rxg6+ hxg6 47. Rxf2 Rb5 48. Ra2 b6 49. a6 Rf5+ 50. Kg2 Rf7 51. Nxb6 c5 52. Nc4 Rf6 53. Ra5 Rc6 54. Ne5 Re6 55. Nc4 Rc6 56. Kf3 Kg5 57. Ke4 Rf6 58. Kd5 Kh4 59. Ra3 Rf5+ 60. Kc6 1-0

[Event "Washington op"]
[Site "Washington DC "]
[Date "2015.10.11"]
[Round "7"]
[White "Wang, Justin"]
[Black "Karell, Leif K"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "2046"]
[BlackElo "1961"]
[PlyCount "71"]
[EventDate "2015.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 168 Extra"]
[Source "ChessBase"]
[SourceDate "2015.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.29"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. Bd3 dxc4 8. Bxc4 0-0 9. 0-0 a6 10. a4 Nc6 11. Bg5 b6 12. Rc1 Bb7 13. Qd2 Na5 14. Ba2 Bxf3 15. gxf3 Nd5 16. Bxe7 Qxe7 17. Nxd5 exd5 18. b4 Nc4 19. Bxc4 dxc4 20. Rxc4 Rfc8 21. Rfc1 Rxc4 22. Rxc4 b5 23. axb5 axb5 24. Rc1 h5 25. d5 Qf6 26. d6 Qxf3 27. d7 Qg4+ 28. Kf1 Qh3+ 29. Ke1 Rd8 30. Rc7 Qxh2 31. Rc8 Qh1+ 32. Ke2 Qe4+ 33. Kd1 Qg4+ 34. f3 Qxf3+ 35. Kc1 Qa3+ 36. Kb1 1-0

[Event "Washington op"]
[Site "Washington DC "]
[Date "2015.10.10"]
[Round "5"]
[White "Gorti, Akshita"]
[Black "Karell, Leif K"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2211"]
[BlackElo "1961"]
[PlyCount "79"]
[EventDate "2015.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 168 Extra"]
[Source "ChessBase"]
[SourceDate "2015.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Nf6 5. b3 Nbd7 6. Bb2 Bd6 7. Bd3 0-0 8. Nbd2 Qe7 9. Ne5 dxc4 10. bxc4 c5 11. 0-0 b6 12. Ne4 Bb7 13. Nxd6 Qxd6 14. Qc2 h6 15. f4 Qc7 16. Rad1 Rac8 17. Nxd7 Nxd7 18. d5 exd5 19. cxd5 Qd6 20. Bf5 Rcd8 21. e4 f6 22. Be6+ Kh8 23. Qc3 Qe7 24. Rfe1 b5 25. Qa5 a6 26. Qc7 Bc8 27. Bg4 Qf7 28. Bxd7 c4 29. Qc5 Bxd7 30. e5 Rc8 31. Qd4 fxe5 32. fxe5 Bg4 33. Rd2 c3 34. Bxc3 Rc4 35. Qe3 Rf4 36. h3 b4 37. Bxb4 Rf1+ 38. Rxf1 Qxf1+ 39. Kh2 Bxh3 40. Bxf8 1-0

[Event "Washington op"]
[Site "Washington DC "]
[Date "2015.10.10"]
[Round "6"]
[White "Karell, Leif K"]
[Black "Yu, Jennifer R"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "1961"]
[BlackElo "2220"]
[PlyCount "41"]
[EventDate "2015.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 168 Extra"]
[Source "ChessBase"]
[SourceDate "2015.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d3 g6 4. g3 Bg7 5. Bg2 Nc6 6. 0-0 Nf6 7. Nbd2 0-0 8. Re1 Qc7 9. Nf1 b6 10. Nh4 e5 11. h3 Be6 12. f4 Qc8 13. f5 gxf5 14. Nxf5 Bxf5 15. exf5 Rd8 16. g4 Ne8 17. Bg5 f6 18. Bd5+ Kh8 19. Be3 Rb8 20. Qd2 Ne7 21. Be6 1/2-1/2

[Event "Washington op"]
[Site "Washington DC "]
[Date "2015.10.09"]
[Round "4"]
[White "Karell, Leif K"]
[Black "Taborsky, Rostislav"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1961"]
[BlackElo "2220"]
[PlyCount "80"]
[EventDate "2015.10.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 168 Extra"]
[Source "ChessBase"]
[SourceDate "2015.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.29"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc7 7. 0-0 e5 8. d3 Be7 9. b3 0-0 10. Bb2 b6 11. a3 Re8 12. Qc2 Rb8 13. e3 Bb7 14. Rfd1 Ne6 15. Ne4 Bd6 16. Rd2 Bc7 17. Rad1 Qe7 18. h4 Rbd8 19. Neg5 Nxg5 20. Nxg5 h6 21. Nf3 Bd6 22. Qc3 f6 23. Qc4+ Kh8 24. Kh2 Na5 25. Qg4 Nxb3 26. Rc2 Bc8 27. Qa4 Na5 28. Rcd2 Bd7 29. Qc2 Be6 30. Re1 Nb3 31. Rde2 Rc8 32. h5 Qf7 33. Nh4 Qxh5 34. Bf3 Qf7 35. Be4 f5 36. Bxf5 Bxf5 37. Nxf5 Qxf5 38. Qxb3 e4 39. dxe4 Rxe4 40. Rd2 Bc7 1-0

[Event "World op 41st"]
[Site "Arlington"]
[Date "2013.07.07"]
[Round "8"]
[White "Karell, Leif K"]
[Black "Colas, Joshua"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "1963"]
[BlackElo "2225"]
[PlyCount "98"]
[EventDate "2013.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. d4 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Nbd2 Nbd7 11. b3 Rc8 12. Bb2 c5 13. Qd3 h6 14. Rac1 Qa5 15. Bc3 Qxa2 16. Ra1 c4 17. bxc4 bxc4 18. Qe3 Qc2 19. Rfc1 Qh7 20. Ng5 hxg5 21. Bxb7 Ng4 22. Qf3 Qxh2+ 23. Kf1 Rc7 24. Bxa6 Qh5 25. Ke1 Qh3 26. Bxc4 Rfc8 27. Ra8 Nb6 28. Rxc8+ Rxc8 29. Qb7 Qh2 30. Ne4 Rxc4 31. Qxe7 Qh1+ 32. Kd2 Qxe4 33. Qd8+ Kh7 34. Qxb6 Nxf2 35. Rf1 Qg2 36. Rxf2 Qxf2 37. Qb5 Rxc3 38. Kxc3 Qxg3+ 39. Kc2 Qe3 40. Qc4 f5 41. Kd1 g4 42. d5 exd5 43. Qxd5 Qf2 44. Qf7 Qf1+ 45. Kd2 Qf4+ 46. Ke1 Qg5 47. Kf1 Qg6 48. Qe7 Qh5 49. Kg1 g3 0-1

[Event "World op 41st"]
[Site "Arlington"]
[Date "2013.07.01"]
[Round "1"]
[White "Harmon Vellotti, Luke"]
[Black "Karell, Leif K"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2368"]
[BlackElo "1963"]
[PlyCount "75"]
[EventDate "2013.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4 Bb4 5. cxd5 cxd5 6. e5 Nc6 7. a3 Bxc3+ 8. bxc3 f6 9. exf6 Nxf6 10. Nf3 0-0 11. Bd3 Qc7 12. 0-0 e5 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. Qc2 Ng4 16. f4 Qh5 17. h3 Nf6 18. Re1 Bd7 19. Be3 Bc6 20. Bd4 Ne4 21. c4 Nf6 22. Re7 dxc4 23. Bxc4+ Kh8 24. Rae1 Rae8 25. Qc3 Rxe7 26. Rxe7 Re8 27. Rxe8+ Nxe8 28. Qe3 Qg6 29. g4 b5 30. Qe7 Qb1+ 31. Bf1 h5 32. Bxa7 Qb3 33. Qe3 Qd5 34. Bd4 hxg4 35. hxg4 Qd7 36. f5 Qd5 37. Kf2 Nd6 38. Qh6+ 1-0

[Event "USA-chT Amateur East"]
[Site "Parsipanny"]
[Date "2009.02.16"]
[Round "5"]
[White "Chanin, Chris A"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "D31"]
[BlackElo "2028"]
[PlyCount "54"]
[EventDate "2009.02.14"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 129 Extra"]
[Source "ChessBase"]
[SourceDate "2009.05.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.05.20"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 d5 3. d4 e6 4. Nf3 dxc4 5. a4 Bb4 6. e3 b5 7. Bd2 a5 8. axb5 Bxc3 9. Bxc3 cxb5 10. b3 Bb7 11. bxc4 b4 12. Bb2 Nf6 13. Bd3 Nbd7 14. 0-0 0-0 15. Qc2 Re8 16. e4 e5 17. d5 Qc7 18. Rfc1 Nc5 19. Re1 a4 20. Re3 a3 21. Bxe5 Rxe5 22. Nxe5 Qxe5 23. Ree1 b3 24. Qd2 b2 25. Ra2 Qd4 26. e5 Qxd3 27. Qb4 Qb3 0-1

[Event "USA-chT Amateur East"]
[Site "Parsipanny"]
[Date "2009.02.16"]
[Round "6"]
[White "Karell, Leif K"]
[Black "Greuter, Albert"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2028"]
[PlyCount "79"]
[EventDate "2009.02.14"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 129 Extra"]
[Source "ChessBase"]
[SourceDate "2009.05.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.05.20"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Bg4 5. Be2 Nc6 6. d5 Bxf3 7. Bxf3 Ne5 8. Be2 c6 9. 0-0 Nf6 10. Bf4 Ned7 11. Qd2 0-0 12. Bh6 Qa5 13. Rad1 Rfc8 14. Rfe1 cxd5 15. Nxd5 Qd8 16. Bxg7 Kxg7 17. Bb5 Nxd5 18. Bxd7 Qxd7 19. exd5 Qf5 20. Rxe7 Rxc2 21. Qd4+ Qf6 22. Qxf6+ Kxf6 23. Rxb7 a5 24. g3 Re8 25. Rd3 Ree2 26. Rf3+ Ke5 27. Rbxf7 Kxd5 28. Rxh7 Rxb2 29. a3 g5 30. h4 gxh4 31. Rxh4 Re5 32. Rh6 Rd2 33. Kg2 Kc5 34. g4 Rd4 35. Kg3 Ree4 36. Rf5+ d5 37. f3 Re3 38. g5 Rxa3 39. g6 Ra1 40. Rh2 1-0

[Event "USA-chT Amateur East"]
[Site "Parsipanny"]
[Date "2009.02.15"]
[Round "4"]
[White "Karell, Leif K"]
[Black "Fagliano, Joel A"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2028"]
[PlyCount "41"]
[EventDate "2009.02.14"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 129 Extra"]
[Source "ChessBase"]
[SourceDate "2009.05.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.05.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. exd5 Nxd5 6. Bc4 cxd4 7. 0-0 Nb6 8. Bb5+ Nc6 9. Nb3 Bd7 10. Nbxd4 Nxd4 11. Nxd4 Bc5 12. Nxe6 fxe6 13. Qh5+ g6 14. Qxc5 Rc8 15. Qe5 0-0 16. Bh6 Rf7 17. Bxd7 Qxd7 18. Rad1 Qe8 19. Rfe1 Rc6 20. Rd6 Rxd6 21. Qxd6 1-0

[Event "USA-chT Amateur East"]
[Site "Parsipanny"]
[Date "2009.02.15"]
[Round "3"]
[White "Shekhtman, David"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "B15"]
[BlackElo "2028"]
[PlyCount "68"]
[EventDate "2009.02.14"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 129 Extra"]
[Source "ChessBase"]
[SourceDate "2009.05.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.05.20"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Bd6 7. Bc4 0-0 8. 0-0 Nd7 9. c3 Bc7 10. Bb3 Nb6 11. Qd3 Nd5 12. Bc2 g6 13. Nh4 Re8 14. f4 Bg4 15. Bd1 f5 16. g3 Bxd1 17. Rxd1 Bxf4 18. Bxf4 Nxf4 19. gxf4 Qxh4 20. Qg3 Qxg3+ 21. hxg3 Re2 22. Re1 Rxb2 23. Re7 Rc2 24. Rxb7 Re8 25. Rxa7 Ree2 26. a4 Rg2+ 27. Kh1 Rh2+ 28. Kg1 Rcg2+ 29. Kf1 Rf2+ 30. Kg1 Rhg2+ 31. Kh1 Rxg3 32. a5 Rxf4 33. Kh2 Rg5 34. Kh3 Rfg4 0-1

[Event "USA-chT Amateur East"]
[Site "Parsipanny"]
[Date "2009.02.14"]
[Round "1"]
[White "McAuliffe, W Geoffrey"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "B13"]
[BlackElo "2028"]
[PlyCount "60"]
[EventDate "2009.02.14"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 129 Extra"]
[Source "ChessBase"]
[SourceDate "2009.05.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.05.20"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Nc6 6. Bf4 Bg4 7. Qb3 Qd7 8. Nd2 e6 9. Ngf3 Bxf3 10. Nxf3 Bd6 11. Bxd6 Qxd6 12. 0-0 0-0 13. Rae1 a6 14. Ne5 b5 15. a3 Rfb8 16. g4 a5 17. g5 Nh5 18. f4 Nxe5 19. fxe5 Qe7 20. h4 g6 21. Rf6 b4 22. Be2 bxa3 23. Qxa3 Qxa3 24. bxa3 Nxf6 25. gxf6 Rb3 26. c4 dxc4 27. Bxc4 Rxa3 28. Rb1 Ra4 29. Bb5 Rxd4 30. Bc6 Rad8 0-1

[Event "World op 36th"]
[Site "Philadelphia"]
[Date "2008.07.04"]
[Round "5"]
[White "Karell, Leif K"]
[Black "Friedel, Joshua E"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "2031"]
[BlackElo "2524"]
[PlyCount "46"]
[EventDate "2008.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Neg5 0-0-0 11. Nxe6 fxe6 12. Rxe6 h6 13. Qe2 g5 14. Bd2 Qd5 15. Re4 Bg7 16. Ne1 d3 17. Nxd3 Bxb2 18. Rb1 Bf6 19. Qg4+ Kb8 20. Nb4 Nxb4 21. Rexb4 b6 22. Be3 h5 23. c4 Qd3 0-1

[Event "Atlantic op 38th"]
[Site "Washington DC"]
[Date "2006.08.27"]
[Round "4"]
[White "Karell, Leif K"]
[Black "Thaler, Michael"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "2078"]
[BlackElo "2126"]
[PlyCount "66"]
[EventDate "2006.08.25"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Bg5 h6 11. Bh4 g5 12. Nf6+ Ke7 13. Bg3 Kxf6 14. Nxd4 Bd6 15. Qf3+ Kg7 16. Nxe6+ fxe6 17. Bxd6 cxd6 18. Rxe6 Raf8 19. Qb3 Qb6 20. Qc3+ Qd4 21. Re7+ Kg6 22. Qxd4 Nxd4 23. Rd1 Re8 24. Rxb7 Rh7 25. Rxh7 Kxh7 26. Kf1 Nxc2 27. g3 Re6 28. a3 g4 29. b4 h5 30. Rc1 Nd4 31. a4 a6 32. Rd1 Re4 33. Rb1 Nf3 0-1

[Event "Atlantic op 38th"]
[Site "Washington DC"]
[Date "2006.08.26"]
[Round "3"]
[White "Mouzon, Harold"]
[Black "Karell, Leif K"]
[Result "0-1"]
[ECO "B15"]
[BlackElo "2078"]
[PlyCount "68"]
[EventDate "2006.08.25"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Nf3 Be6 7. Bd3 Bd6 8. 0-0 0-0 9. Re1 Nd7 10. Qe2 Re8 11. Bd2 Nf8 12. Bc4 Qd7 13. Bxe6 Nxe6 14. Qd3 Rad8 15. c3 Bc7 16. Qf5 Qd6 17. g3 c5 18. dxc5 Nxc5 19. Bf4 Qc6 20. Nd4 Qb6 21. Bxc7 Qxc7 22. Rxe8+ Rxe8 23. Rd1 Qb6 24. Kg2 a6 25. Qc2 f5 26. b4 Ne4 27. f3 Nf6 28. Qd2 Nd5 29. Re1 Rd8 30. Rd1 f4 31. gxf4 Qc7 32. Kf2 Nxf4 33. Kg1 b5 34. Qc1 Rxd4 0-1

[Event "Atlantic op 38th"]
[Site "Washington DC"]
[Date "2006.08.25"]
[Round "1"]
[White "Karell, Leif K"]
[Black "Rohonyan, Katerina"]
[Result "0-1"]
[ECO "B74"]
[WhiteElo "2078"]
[BlackElo "2333"]
[PlyCount "48"]
[EventDate "2006.08.25"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be2 Bg7 6. Nb3 Nf6 7. Nc3 0-0 8. 0-0 d6 9. Be3 Bd7 10. Kh1 a5 11. a4 Rc8 12. f4 Nb4 13. e5 Ne8 14. Bf3 dxe5 15. Bxb7 Rb8 16. Bf3 Nd6 17. fxe5 Nc4 18. Bf4 Nxb2 19. Qc1 N4d3 20. Qd2 Nxf4 21. Qxf4 Rb4 22. Qg3 Be6 23. Nc5 Bc4 24. Na2 Rb8 0-1

[Event "World op 34th"]
[Site "Philadelphia"]
[Date "2006.07.04"]
[Round "9"]
[White "Hansen, Erik Hedegaard"]
[Black "Karell, Leif K"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1835"]
[BlackElo "2078"]
[PlyCount "38"]
[EventDate "2006.06.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. Be3 Nd7 6. Bb5 Qc7 7. Qd4 Ne7 8. b4 Nf5 9. Qc3 Nxe3 10. Qxe3 b6 11. cxb6 Qxc2 12. Nc3 Bxb4 13. Rc1 Bxc3+ 14. Qxc3 Qxc3+ 15. Rxc3 axb6 16. Nf3 0-0 17. 0-0 Ba6 18. Bxd7 Bxf1 19. Kxf1 Rxa2 1/2-1/2

[Event "World op 34th"]
[Site "Philadelphia"]
[Date "2006.07.03"]
[Round "7"]
[White "Filipovich, David"]
[Black "Karell, Leif K"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2225"]
[BlackElo "2078"]
[PlyCount "75"]
[EventDate "2006.06.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. c4 dxc4 5. Na3 Bg4 6. Nxc4 Bxf3 7. Bxf3 Nbd7 8. d4 e6 9. 0-0 Be7 10. b3 0-0 11. Bb2 Rc8 12. e4 Re8 13. Qe2 c5 14. dxc5 Bxc5 15. Rfd1 Qe7 16. e5 Nd5 17. Bxd5 exd5 18. Rxd5 b5 19. Ne3 Nb6 20. Rd3 Nd7 21. Nd5 Qg5 22. b4 Nxe5 23. bxc5 Nxd3 24. Qxd3 Rxc5 25. Rd1 h6 26. h4 Qh5 27. Qd4 f6 28. Kg2 Rc4 29. Nxf6+ gxf6 30. Qxf6 Qg4 31. Qh8+ Kf7 32. Qf6+ Kg8 33. Qh8+ Kf7 34. Qh7+ Kf8 35. Qxh6+ Kg8 36. Rd5 Qe4+ 37. Kh2 Re7 38. Rd8+ 1-0

[Event "World op 34th"]
[Site "Philadelphia"]
[Date "2006.07.03"]
[Round "6"]
[White "Karell, Leif K"]
[Black "Smith, Erickson"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2078"]
[PlyCount "43"]
[EventDate "2006.06.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. e4 b6 2. Nc3 Bb7 3. Nf3 e6 4. d4 h6 5. Bd3 Nf6 6. Qe2 d5 7. exd5 Nxd5 8. Nxd5 Qxd5 9. 0-0 Nd7 10. c4 Qh5 11. Be4 0-0-0 12. Bxb7+ Kxb7 13. Qe4+ Kb8 14. Be3 Bd6 15. a4 f5 16. Qc6 f4 17. a5 bxa5 18. b4 Bxb4 19. Bxf4 e5 20. Nxe5 Nb6 21. Nd3 Bd6 22. Nc5 1-0

[Event "World op 32nd"]
[Site "Philadelphia"]
[Date "2004.07.03"]
[Round "4"]
[White "Karell, Leif K"]
[Black "Shapiro, Daniel E"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "2048"]
[BlackElo "2269"]
[PlyCount "81"]
[EventDate "2004.07.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 g6 6. 0-0 Bg7 7. Be3 Ne7 8. Nc3 0-0 9. Qd2 d5 10. f4 Nbc6 11. e5 f6 12. exf6 Bxf6 13. Nxc6 bxc6 14. Bc5 Rf7 15. Rae1 Qa5 16. Qe3 Rb8 17. Nd1 Qxa2 18. c3 Qa5 19. b4 Qc7 20. Kh1 a5 21. bxa5 Qxa5 22. Bd4 Bxd4 23. cxd4 c5 24. Qe5 Nc6 25. Qg5 Qd8 26. Qg3 Qf6 27. Nf2 c4 28. Ng4 Qg7 29. Bc2 Rb2 30. Ba4 Ne7 31. Ne5 Nf5 32. Qg5 Ra7 33. Bd1 Raa2 34. Bf3 Qe7 35. Qxe7 Nxe7 36. Ng4 Ra3 37. Ra1 Rc3 38. Ra8 Rcb3 39. Nf6+ Kh8 40. Bxd5 exd5 41. Nxd5 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2004.02.16"]
[Round "6"]
[White "Hanke, Timothy"]
[Black "Karell, Leif K"]
[Result "1-0"]
[ECO "B22"]
[BlackElo "2057"]
[PlyCount "51"]
[EventDate "2004.02.14"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 e6 6. Nc3 Nxc3 7. bxc3 Nc6 8. Nf3 d6 9. Bf4 dxe5 10. Nxe5 Bd7 11. Bd3 Nxe5 12. Bxe5 Bc6 13. Qg4 Qd5 14. 0-0 h5 15. Qh3 b5 16. Rfe1 Rc8 17. a4 a6 18. axb5 Bxb5 19. Bxb5+ Qxb5 20. Qf3 Rd8 21. Rab1 Qd5 22. Qd3 Qa5 23. h3 Rh6 24. Qc4 Qd5 25. Qxa6 Bd6 26. c4 1-0

[Event "Philadelphia National op 33rd"]
[Site "Philadelphia"]
[Date "2002.12.01"]
[Round "6"]
[White "Karell, Leif K"]
[Black "Bierkens, Pieter"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "2123"]
[BlackElo "2245"]
[PlyCount "75"]
[EventDate "2002.11.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 091 Extra"]
[Source "ChessBase"]
[SourceDate "2003.01.09"]
[SourceVersion "1"]
[SourceVersionDate "2003.01.09"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. a3 Qb6 7. Nb3 Qc7 8. Bd3 Nf6 9. 0-0 Be7 10. f4 d6 11. e5 Nfd7 12. Qg4 g6 13. Re1 Bb7 14. exd6 Bxd6 15. Be3 Nc5 16. Bxb5+ Ncd7 17. Bd3 0-0 18. Qh4 Nc5 19. Nxc5 Bxc5 20. Kh1 Nd7 21. Bd2 Bd4 22. Be4 Bf6 23. Qf2 Rab8 24. Rab1 Rfc8 25. f5 exf5 26. Bf4 Be5 27. Bxb7 Rxb7 28. Nd5 Qc5 29. Qxc5 Rxc5 30. Bxe5 Rxd5 31. Bc3 Rb8 32. Rbd1 Nb6 33. Rxd5 Nxd5 34. Bd4 Kf8 35. c3 Nf4 36. g3 Ne6 37. Bf6 Nc5 38. Rd1 1/2-1/2

[Event "Philadelphia National op 33rd"]
[Site "Philadelphia"]
[Date "2002.12.01"]
[Round "5"]
[White "Mirabile, Tim"]
[Black "Karell, Leif K"]
[Result "1/2-1/2"]
[ECO "B29"]
[WhiteElo "2262"]
[BlackElo "2123"]
[PlyCount "49"]
[EventDate "2002.11.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 091 Extra"]
[Source "ChessBase"]
[SourceDate "2003.01.09"]
[SourceVersion "1"]
[SourceVersionDate "2003.01.09"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 e6 5. Nxd5 exd5 6. d4 Nc6 7. dxc5 Bxc5 8. Bd3 d6 9. exd6 Qxd6 10. 0-0 0-0 11. Re1 h6 12. Be3 Bg4 13. Bxc5 Qxc5 14. h3 Bh5 15. Be2 Rfe8 16. c3 Rad8 17. Rc1 Re4 18. Nd2 Rxe2 19. Rxe2 Bxe2 20. Qxe2 d4 21. Nb3 Qg5 22. Rd1 dxc3 23. Rxd8+ Nxd8 24. bxc3 Qd5 25. Qd2 1/2-1/2

[Event "Philadelphia National op 33rd"]
[Site "Philadelphia"]
[Date "2002.11.30"]
[Round "3"]
[White "Karell, Leif K"]
[Black "Filipovich, David"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2123"]
[BlackElo "2228"]
[PlyCount "35"]
[EventDate "2002.11.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 091 Extra"]
[Source "ChessBase"]
[SourceDate "2003.01.09"]
[SourceVersion "1"]
[SourceVersionDate "2003.01.09"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 g6 6. Nf3 Bg7 7. 0-0 Nh6 8. Bxh6 Bxh6 9. Nbd2 0-0 10. Qe2 Qc7 11. h3 Bd7 12. Rfe1 Rfe8 13. Ne5 Nxe5 14. dxe5 b5 15. Nf3 a6 16. Rad1 Qb6 17. Bb1 Be6 18. Nd4 1/2-1/2

[Event "Philadelphia National op 33rd"]
[Site "Philadelphia"]
[Date "2002.11.29"]
[Round "1"]
[White "Karell, Leif K"]
[Black "Figler, Ilya"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2123"]
[BlackElo "2356"]
[PlyCount "67"]
[EventDate "2002.11.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 091 Extra"]
[Source "ChessBase"]
[SourceDate "2003.01.09"]
[SourceVersion "1"]
[SourceVersionDate "2003.01.09"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Bf5 5. Nf3 Nd7 6. Bc4 e6 7. 0-0 c6 8. Qe2 Ngf6 9. Ne5 Nxe5 10. dxe5 Nd7 11. f4 h5 12. h3 0-0-0 13. a3 Nb6 14. Ba2 Nd5 15. Ne4 Qb6+ 16. Kh2 Qd4 17. Ng5 Rd7 18. Rd1 Nxf4 19. Rxd4 Nxe2 20. Rxd7 Kxd7 21. Nxf7 Rg8 22. Be3 g5 23. Nxg5 Bg7 24. Rd1+ Ke8 25. Nxe6 Bxe5+ 26. Kh1 Ng3+ 27. Kg1 Bxe6 28. Bxe6 Rg7 29. Bxa7 Bxb2 30. Bc5 Ne2+ 31. Kf2 Nf4 32. Re1 Rxg2+ 33. Kf3 Rg5 34. Bf5+ 1-0

[Event "USA-chT Amateur East"]
[Site "Parsipanny"]
[Date "2002.02.16"]
[Round "1"]
[White "Benjamin, Joel"]
[Black "Karell, Leif K"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2593"]
[BlackElo "2123"]
[PlyCount "35"]
[EventDate "2002.02.16"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 086 Extra"]
[Source "ChessBase"]
[SourceDate "2002.03.14"]
[SourceVersion "1"]
[SourceVersionDate "2002.03.14"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. Qc2 Nf6 4. g3 e6 5. d4 Bd6 6. Nbd2 Nbd7 7. Bg2 0-0 8. 0-0 Re8 9. b3 e5 10. dxe5 Nxe5 11. Bb2 Qe7 12. cxd5 Nxd5 13. Nd4 Ba3 14. Bxa3 Qxa3 15. e4 Nb6 16. Rad1 Bg4 17. f3 Rad8 18. Nb1 1-0

[Event "World op 29th"]
[Site "Philadelphia"]
[Date "2001.07.06"]
[Round "4"]
[White "McCarthy, Brian"]
[Black "Karell, Leif K"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2240"]
[PlyCount "61"]
[EventDate "2001.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 c6 2. e4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Nc6 6. Bf4 Bg4 7. Qb3 Qd7 8. Nd2 e6 9. Ngf3 Bd6 10. Bg3 Qc7 11. 0-0 0-0 12. Rfe1 Bxf3 13. Nxf3 Bxg3 14. hxg3 a6 15. Qc2 h6 16. Qe2 Nd7 17. Rac1 b5 18. Bb1 Rfe8 19. a4 Rab8 20. axb5 axb5 21. Bd3 Qb7 22. Ne5 Ncxe5 23. dxe5 Rec8 24. Ra1 Nc5 25. Bc2 b4 26. c4 Rd8 27. cxd5 Rxd5 28. b3 Rbd8 29. Qc4 Nd3 30. Bxd3 Rxd3 31. Rab1 1/2-1/2

[Event "World op 29th"]
[Site "Philadelphia"]
[Date "2001.07.04"]
[Round "1"]
[White "Karell, Leif K"]
[Black "Figler, Ilya"]
[Result "1-0"]
[ECO "C03"]
[BlackElo "2394"]
[PlyCount "82"]
[EventDate "2001.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. c3 b6 5. Bd3 dxe4 6. Bxe4 c6 7. Ne2 Nf6 8. Bf3 Bb7 9. 0-0 Nbd7 10. Nc4 Nd5 11. Re1 Qc7 12. Ng3 0-0 13. Bxd5 cxd5 14. Ne5 Nxe5 15. dxe5 f5 16. exf6 Bxf6 17. Rxe6 Rad8 18. Rxf6 gxf6 19. Bh6 Rf7 20. Qg4+ Kh8 21. Re1 Re7 22. Rd1 Rg8 23. Qh4 Rg6 24. h3 Qc4 25. Qxc4 dxc4 26. Rd8+ Rg8 27. Rd6 f5 28. Rf6 Be4 29. Kh2 Rge8 30. Bg5 Rg7 31. h4 Kg8 32. Nh5 Rf7 33. Rd6 Rc8 34. Nf6+ Kg7 35. Nh5+ Kf8 36. Re6 Rfc7 37. Rh6 Bb1 38. a3 Rf7 39. Nf6 Rcc7 40. Bf4 Rb7 41. Bd6+ Kg7 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "2000.03.21"]
[Round "6"]
[White "Dorosin, Neil S"]
[Black "Karell, Leif K"]
[Result "1/2-1/2"]
[ECO "D31"]
[PlyCount "36"]
[EventDate "2000.03.19"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. cxd5 exd5 5. Qc2 Bd6 6. Nf3 Bg4 7. Bg5 Qc7 8. e4 f6 9. Bh4 Ne7 10. Bg3 Nd7 11. Bxd6 Qxd6 12. Be2 0-0 13. 0-0 Kh8 14. Rfe1 dxe4 15. Nxe4 Qf4 16. Nc5 Nxc5 17. dxc5 Nd5 18. Rad1 Bf5 1/2-1/2

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1999.02.14"]
[Round "3"]
[White "Levin, Anatoly Borisovich"]
[Black "Karell, Leif K"]
[Result "1/2-1/2"]
[ECO "B29"]
[PlyCount "71"]
[EventDate "1999.02.??"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 d5 5. exd5 Nxd5 6. Nxd5 Qxd5 7. Be3 cxd4 8. Nxd4 e5 9. Nb5 Qd8 10. Qxd8+ Kxd8 11. 0-0-0+ Bd7 12. Bc4 Kc8 13. Bxf7 Be7 14. Nd6+ Bxd6 15. Rxd6 Kc7 16. Rhd1 Bf5 17. R6d2 Rhf8 18. Bh5 b6 19. Bf3 Rac8 20. h3 Kb8 21. Bg4 Bxg4 22. hxg4 Rf7 23. Rd7 Rc7 24. Rxf7 Rxf7 25. Rd2 Kc7 26. c3 Ne7 27. Kc2 Kc6 28. c4 Ng6 29. g3 Re7 30. b4 e4 31. Kc3 Ne5 32. g5 Ng4 33. Kd4 Ne5 34. Kc3 Ng4 35. Kd4 Ne5 36. Kc3 1/2-1/2

[Event "US Open-75"]
[Site "New York"]
[Date "1974.08.14"]
[Round "4"]
[White "Karell, Leif K"]
[Black "Bohm, Hans"]
[Result "0-1"]
[ECO "B05"]
[PlyCount "50"]
[EventDate "1974.08.11"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. c4 Nb6 8. Nc3 0-0 9. Be3 N8d7 10. exd6 cxd6 11. b3 f5 12. Qd2 Nf6 13. Ng5 Qd7 14. f3 Bh5 15. c5 dxc5 16. Bb5 Qd6 17. Rfe1 Bf7 18. dxc5 Qxd2 19. Bxd2 Bxc5+ 20. Be3 Rfc8 21. Nd1 h6 22. Nxf7 Kxf7 23. Nf2 Bxe3 24. Rxe3 Nfd5 25. Ree1 Kf6 0-1

[Event "Montreal North American Intercoll"]
[Site "Montreal"]
[Date "1969.??.??"]
[Round "?"]
[White "Karell, Leif K"]
[Black "Coudari, Camille"]
[Result "0-1"]
[ECO "C44"]
[PlyCount "70"]
[EventDate "1969.12.27"]
[EventType "swiss"]
[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. Nf3 Nc6 3. Bc4 Be7 4. d4 exd4 5. c3 d6 6. Qb3 Na5 7. Bxf7+ Kf8 8. Qa4 Kxf7 9. Qxa5 dxc3 10. Nxc3 Nf6 11. h3 Re8 12. e5 dxe5 13. Nxe5+ Kg8 14. 0-0 Bd6 15. Bf4 b6 16. Qb5 a6 17. Qe2 b5 18. Rad1 Qe7 19. Rfe1 Bb7 20. Qc2 Rad8 21. Bh2 b4 22. Nd3 Bxh2+ 23. Kxh2 Qd6+ 24. Ne5 Nd5 25. Nxd5 Bxd5 26. f4 a5 27. Qf2 a4 28. Rd3 Qb6 29. Ng4 Bxa2 30. Rxe8+ Rxe8 31. Qg3 a3 32. bxa3 b3 33. Ne5 b2 34. Rd7 Qf6 35. Ng4 Qf8 0-1

