[Event "Titled Tuesday intern op 6th June"]
[Site "Chess.com INT"]
[Date "2020.06.02"]
[Round "5"]
[White "Horak, Martin"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "D48"]
[WhiteElo "2331"]
[BlackElo "2263"]
[PlyCount "71"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. c4 c6 4. Nc3 e6 5. d4 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. 0-0 a6 10. e4 c5 11. d5 c4 12. Bc2 Nc5 13. Re1 Be7 14. d6 Bxd6 15. e5 Nd5 16. exd6 Qxd6 17. Qd4 0-0 18. Ng5 h6 19. Nge4 Nxe4 20. Nxe4 Qc6 21. Ng3 Rad8 22. Be4 Qc7 23. Qd1 Nb4 24. Qf3 Bxe4 25. Qxe4 Nd3 26. Rf1 Rd5 27. b3 Rc8 28. Be3 c3 29. Ne2 b4 30. Nf4 Nxf4 31. Bxf4 Qb6 32. Rfd1 Rcd8 33. Rxd5 Rxd5 34. Be3 Qb5 35. a4 bxa3 36. Qc4 1-0

[Event "Titled Tuesday intern op 6th June"]
[Site "Chess.com INT"]
[Date "2020.06.02"]
[Round "4"]
[White "Koenig, David E"]
[Black "Nitin, Senthilvel"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2263"]
[BlackElo "2381"]
[PlyCount "156"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. a3 e6 6. Nge2 Nf6 7. 0-0 d5 8. exd5 Nxd5 9. Nxd5 Bxd5 10. d4 Bxg2 11. Kxg2 Nc6 12. Be3 c4 13. Nf4 g5 14. Nh5 Qd5+ 15. Qf3 Qxf3+ 16. Kxf3 Be7 17. Rad1 0-0-0 18. g4 Rd5 19. c3 f5 20. Rfe1 Rg8 21. h3 Kd7 22. Bc1 Rf8 23. Kg2 f4 24. Re4 Nd8 25. Rde1 Rf7 26. f3 Bf8 27. h4 h6 28. hxg5 hxg5 29. Re5 Bg7 30. Rxd5+ exd5 31. Nxg7 Rxg7 32. Re5 Kd6 33. Rf5 Ne6 34. Rf6 Re7 35. Kf2 Rh7 36. Kg2 Ke7 37. Rf5 Kd6 38. Rf6 a5 39. Bd2 Rd7 40. Rg6 Rd8 41. Be1 Ke7 42. Rh6 Rg8 43. Rh7+ Ng7 44. Bd2 Kf7 45. Rh6 Ne6 46. Rh7+ Rg7 47. Rh8 Nf8 48. Rh6 Ng6 49. Kf2 Rg8 50. Rh5 Nf8 51. Rh6 Rg6 52. Rh1 Rg7 53. Rh6 Ne6 54. Rh8 Rg8 55. Rh7+ Ng7 56. Rh6 Ne6 57. Rh7+ Rg7 58. Rh8 Nf8 59. Rh6 Rg6 60. Rh5 Kf6 61. Rh8 Kf7 62. Rh1 Re6 63. Rh5 Kg6 64. Rh8 Kg7 65. Rh5 Nh7 66. Rh1 Nf6 67. Rh2 Re8 68. Rh1 Rh8 69. Re1 Rh2+ 70. Kf1 Rxd2 71. Re7+ Kg6 72. Ra7 Rxb2 73. Rxa5 Rb3 74. Ke2 Rxc3 75. Rxb5 Rxa3 76. Rc5 Re3+ 77. Kf2 Rd3 78. Rc6 Rxd4 0-1

[Event "Titled Tuesday intern op 6th June"]
[Site "Chess.com INT"]
[Date "2020.06.02"]
[Round "9"]
[White "Koenig, David E"]
[Black "Seul, Georg"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2263"]
[BlackElo "2372"]
[PlyCount "93"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 bxc6 6. Bd3 Qh4 7. 0-0 Nf6 8. h3 d6 9. Nd2 Bxh3 10. gxh3 Qg3+ 11. Kh1 Qxh3+ 12. Kg1 Ng4 13. Nf3 Qg3+ 14. Kh1 Nxf2+ 15. Rxf2 Qxf2 16. Bf4 0-0 17. Bh2 Bb6 18. Ng5 Qh4 19. Qd2 Rae8 20. Rf1 h6 21. Nf3 Qh5 22. Qc3 Re6 23. Qxc6 Rf6 24. Be2 Qh3 25. Qb5 Rg6 26. Ne1 Bd4 27. Qd3 Qxd3 28. Nxd3 Re8 29. c3 Rxe4 30. Bf3 Re3 31. Nf4 Rxf3 32. Rxf3 Rf6 33. cxd4 g5 34. Kg2 gxf4 35. Rxf4 Rg6+ 36. Kf3 Kf8 37. Bg3 Ke7 38. Bh4+ Ke6 39. d5+ Kxd5 40. Rxf7 c5 41. Rxa7 h5 42. Rh7 Kc4 43. Rxh5 d5 44. Be1 Ra6 45. b3+ Kd4 46. Bf2+ Kd3 47. Rxd5+ 1-0

[Event "Titled Tuesday intern op 6th June"]
[Site "Chess.com INT"]
[Date "2020.06.02"]
[Round "2"]
[White "Koenig, David E"]
[Black "Silich, Yahor"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2263"]
[BlackElo "2330"]
[PlyCount "81"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 Nd4 7. Nce2 Ne7 8. c3 Nxe2 9. Nxe2 d6 10. Qd2 0-0 11. Bh6 Rb8 12. h4 f5 13. Bxg7 Kxg7 14. h5 Rh8 15. 0-0-0 b5 16. d4 c4 17. hxg6 hxg6 18. Rxh8 Qxh8 19. Rh1 Qg8 20. exf5 exf5 21. Nf4 Bb7 22. Qe3 Kf6 23. Re1 Qf7 24. Bxb7 Rxb7 25. Qe6+ Qxe6 26. Rxe6+ Kf7 27. Rxd6 Rb6 28. Rd7 Ra6 29. Nd5 Ke6 30. Rxe7+ Kxd5 31. Re5+ Kd6 32. a3 Rb6 33. Kd2 a6 34. Ke3 Rb8 35. Kf4 Rh8 36. Kg5 Rg8 37. Kf6 Kd7 38. Kf7 Rh8 39. Kxg6 Rh2 40. Re2 Rh1 41. Kxf5 1-0

[Event "Titled Tuesday intern op 6th June"]
[Site "Chess.com INT"]
[Date "2020.06.02"]
[Round "10"]
[White "Koenig, David E"]
[Black "Siniauski, Artsiom"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2263"]
[BlackElo "2275"]
[PlyCount "60"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Bd7 6. Be2 Bb5 7. c4 Bxc4 8. Bxc4 dxc4 9. d5 Ne7 10. d6 Ng6 11. Nbd2 Nd7 12. Qe2 Qb4 13. a3 Qa5 14. Qe4 c3 15. bxc3 Qxc3 16. Rb1 Ngxe5 17. Nxe5 Qxe5 18. Rxb7 Bxd6 19. f4 Qxe4+ 20. Nxe4 Be7 21. 0-0 Nf6 22. Ng5 h6 23. Nf3 Nd5 24. Ne5 0-0 25. f5 Bf6 26. Nd7 Bd4+ 27. Kh1 Rfd8 28. fxe6 fxe6 29. Re1 Nf6 30. Ne5 Bxe5 0-1

[Event "Titled Tuesday intern op 6th June"]
[Site "Chess.com INT"]
[Date "2020.06.02"]
[Round "8"]
[White "Sawlin, Leonid"]
[Black "Koenig, David E"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2385"]
[BlackElo "2263"]
[PlyCount "200"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. 0-0 0-0 6. Re1 Re8 7. a4 d6 8. c3 a5 9. Na3 Bg4 10. h3 Bh5 11. Nc2 Bb6 12. Be3 Bxe3 13. Nxe3 Ne7 14. g4 Bg6 15. h4 h6 16. h5 Bh7 17. Qb3 Rf8 18. Rad1 c6 19. d4 exd4 20. e5 Nfd5 21. cxd4 Nxe3 22. Rxe3 d5 23. Be2 Qd7 24. Ne1 g6 25. Rg3 Kg7 26. Qf3 Qe6 27. Ng2 g5 28. Ne3 f5 29. gxf5 Nxf5 30. Qg4 Rae8 31. Nxf5+ Bxf5 32. Qf3 Be4 33. Qb3 Re7 34. Bg4 Bf5 35. Be2 Ref7 36. Rd2 Be4 37. Bg4 Qe7 38. e6 Rf4 39. Qe3 Qf6 40. f3 Bf5 41. e7 Re8 42. Bxf5 Rxf5 43. Re2 Qd6 44. Kg2 Rf7 45. Qe6 Qxe6 46. Rxe6 Rfxe7 47. Rg6+ Kh7 48. Rg4 Re6 49. Rxe6 Rxe6 50. Kf2 Kg7 51. Rg1 Kf6 52. Rc1 Kf5 53. Rc5 Kf4 54. Rxa5 Re3 55. Ra8 Rxf3+ 56. Ke2 Rb3 57. Rh8 Rxb2+ 58. Kd3 Rb3+ 59. Kc2 Rb4 60. Rxh6 Rxd4 61. a5 Ra4 62. Rf6+ Kg4 63. h6 Rxa5 64. Rf8 Ra2+ 65. Kd3 Rh2 66. Rf6 Kg3 67. Ke3 g4 68. Rg6 c5 69. Kd3 Rh3 70. Ke3 Kg2+ 71. Kf4 Rf3+ 72. Kxg4 Rf8 73. h7 Rh8 74. Kh5+ Kf3 75. Kh6 d4 76. Rg8 Rxh7+ 77. Kxh7 d3 78. Rb8 d2 79. Rd8 Ke2 80. Re8+ Kd3 81. Rd8+ Kc2 82. Rb8 d1Q 83. Rxb7 Qd3+ 84. Kg7 Qg3+ 85. Kh8 Qh2+ 86. Rh7 Qb8+ 87. Kg7 Qc7+ 88. Kg6 Qxh7+ 89. Kxh7 c4 90. Kg6 c3 91. Kf5 Kd2 92. Ke4 c2 93. Kd4 c1Q 94. Ke4 Qc4+ 95. Ke5 Ke3 96. Kf5 Qd5+ 97. Kg4 Qe5 98. Kh4 Qg7 99. Kh5 Kf4 100. Kh4 Qh7# 0-1

[Event "Titled Tuesday intern op 6th June"]
[Site "Chess.com INT"]
[Date "2020.06.02"]
[Round "3"]
[White "Soltanici, Ruslan"]
[Black "Koenig, David E"]
[Result "0-1"]
[ECO "C65"]
[WhiteElo "2410"]
[BlackElo "2263"]
[PlyCount "74"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7 5. d4 c6 6. Bc4 d5 7. exd5 e4 8. Ne5 Nexd5 9. 0-0 Bd6 10. Nc3 Be6 11. Nxd5 cxd5 12. Bb5+ Nd7 13. Nxd7 Bxd7 14. Bxd7+ Qxd7 15. f3 0-0 16. fxe4 dxe4 17. Bf4 Rad8 18. c3 Qc7 19. Bxd6 Rxd6 20. Qe2 Rh6 21. g3 f5 22. c4 Qb6 23. c5 Qe6 24. b3 Rd8 25. Rad1 Qd5 26. Qe3 Ra6 27. a4 b6 28. Qg5 g6 29. g4 bxc5 30. gxf5 cxd4 31. Qe7 gxf5 32. Rf2 Rg6+ 33. Rg2 Rxg2+ 34. Kxg2 e3+ 35. Kg3 Qd6+ 36. Qxd6 Rxd6 37. Rd3 Re6 0-1

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "6"]
[White "Hoeffer, David"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2342"]
[BlackElo "2263"]
[PlyCount "57"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Nxc6 dxc6 8. Bd3 0-0 9. c3 g6 10. Bc2 c5 11. d4 cxd4 12. Qxd4 Bf6 13. Qd1 Bg7 14. Nd2 Bf5 15. Nf3 Bxc2 16. Qxc2 h6 17. Bf4 Qf6 18. Be5 Qf5 19. Qxf5 gxf5 20. Bxd6 cxd6 21. Rad1 Rad8 22. Re7 b5 23. Rxa7 b4 24. cxb4 Bxb2 25. b5 Rfe8 26. g3 Re2 27. a4 Ba3 28. Rc7 Bc5 29. Rxc5 1-0

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "9"]
[White "Koenig, David E"]
[Black "Idrisov, Ildar F"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2263"]
[BlackElo "2282"]
[PlyCount "129"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 a6 5. Nf3 Nf6 6. g3 Bg4 7. Bg2 e6 8. Bf4 Qd7 9. Qd2 Nc6 10. Ne5 Nxe5 11. dxe5 Nd5 12. Nxd5 exd5 13. Qxd5 Qxd5 14. Bxd5 c6 15. Be4 0-0-0 16. f3 Be6 17. Be3 Bd5 18. Bf5+ Be6 19. Bxe6+ fxe6 20. Ke2 Rd5 21. f4 Bc5 22. Rad1 Rhd8 23. Rd3 Bxe3 24. Kxe3 Rxd3+ 25. cxd3 Rd5 26. Rc1 Rb5 27. Rc2 Kd7 28. g4 g6 29. h4 a5 30. b3 c5 31. Rh2 a4 32. bxa4 Ra5 33. h5 Rxa4 34. hxg6 hxg6 35. Rh7+ Kc6 36. Re7 Rxa2 37. Rxe6+ Kc7 38. Rxg6 b5 39. Ke4 Ra4+ 40. Kd5 Rxf4 41. Kxc5 b4 42. Rg7+ Kd8 43. Kd6 Rd4+ 44. Ke6 Rxd3 45. Rg8+ Kc7 46. Rg7+ Kc6 47. Rg8 Kc7 48. Rg7+ Kc6 49. Rh7 b3 50. Rh2 Rd4 51. g5 Rb4 52. Rb2 Kc5 53. g6 Kd4 54. Kf6 Kc3 55. Re2 b2 56. Rxb2 Rxb2 57. g7 Rf2+ 58. Ke7 Rg2 59. Kf7 Rf2+ 60. Ke8 Rg2 61. Kf7 Rf2+ 62. Ke7 Rg2 63. Kf6 Rf2+ 64. Kg6 Rg2+ 65. Kf7 1/2-1/2

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "2"]
[White "Koenig, David E"]
[Black "Kim, Sergey2222"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2263"]
[BlackElo "2295"]
[PlyCount "49"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 dxc6 7. Nc3 Be6 8. Na4 Be7 9. Qe3 Qe5 10. Bd3 Nf6 11. h3 Qa5+ 12. Nc3 0-0-0 13. Bd2 Bc5 14. Qg3 Rhg8 15. Nd5 cxd5 16. Bxa5 b6 17. Bd2 dxe4 18. Ba6+ Kb8 19. Bf4 Rd7 20. Bb5 Re7 21. 0-0-0 Nh5 22. Qh4 Nxf4 23. Qxf4 g5 24. Qxe4 Bxf2 25. Ba6 1-0

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "3"]
[White "Koenig, David E"]
[Black "Munkhzul, Turmunkh"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "2263"]
[BlackElo "2278"]
[PlyCount "76"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. 0-0 0-0 9. Be3 b6 10. d4 cxd4 11. Nxd4 Bb7 12. Qd2 Na5 13. Bf2 Nc4 14. Qc1 d5 15. e5 Rc8 16. a4 a6 17. Nd1 Qc7 18. b3 Na5 19. Qb2 Nec6 20. c3 Nxd4 21. Bxd4 Nc6 22. Be3 h5 23. Qf2 d4 24. cxd4 Nb4 25. Rc1 Qd7 26. Nb2 Bxg2 27. Qxg2 Nd5 28. Bf2 Rxc1 29. Rxc1 Rc8 30. Qf1 Bf8 31. Nd3 Ba3 32. Rxc8+ Qxc8 33. Qa1 Qc2 34. Qxa3 Qxd3 35. Qb2 h4 36. Kg2 Qe4+ 37. Kh3 Qf5+ 38. Kxh4 Qh5# 0-1

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "7"]
[White "Koenig, David E"]
[Black "Novoselski, Zoran"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2263"]
[BlackElo "2318"]
[PlyCount "104"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Bd7 6. Be2 Bb5 7. c4 dxc4 8. d5 exd5 9. Qxd5 Qc6 10. Nc3 Ne7 11. Qxc6+ Bxc6 12. Bxc4 a6 13. 0-0 h6 14. Re1 b5 15. Bd3 c4 16. Be4 Bxe4 17. Nxe4 Nec6 18. Be3 Be7 19. Ng3 0-0 20. Nf5 Re8 21. Nxe7+ Nxe7 22. Nd4 Nbc6 23. Nxc6 Nxc6 24. f4 Nb4 25. Re2 Rac8 26. a4 Nd3 27. axb5 axb5 28. g3 f6 29. exf6 gxf6 30. Kf1 Re6 31. Bd4 Rd6 32. Bg1 b4 33. Ra7 c3 34. bxc3 Rxc3 35. Ree7 Rc1+ 36. Kg2 Rc8 37. Rg7+ Kf8 38. Rh7 Kg8 39. Rag7+ Kf8 40. Rb7 Kg8 41. Rxh6 Rcd8 42. Rg6+ Kf8 43. Rh6 R8d7 44. Rh8+ Kg7 45. Rxd7+ Rxd7 46. Rb8 Kg6 47. Kf3 Kf5 48. g4+ Ke6 49. h4 Kd5 50. h5 Kc4 51. g5 fxg5 52. fxg5 b3 0-1

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "5"]
[White "Koenig, David E"]
[Black "Petrova, Irina"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2263"]
[BlackElo "2087"]
[PlyCount "73"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bf4 c6 5. Qd2 b5 6. f3 Nbd7 7. 0-0-0 Bb7 8. Kb1 a6 9. Bd3 c5 10. dxc5 dxc5 11. Nh3 e6 12. Bh6 Bxh6 13. Qxh6 Qc7 14. Ng5 b4 15. Na4 c4 16. Be2 Qc6 17. b3 Rc8 18. Rc1 Rf8 19. Bxc4 Nc5 20. Nxc5 Qxc5 21. Nxh7 Nxh7 22. Qxh7 a5 23. Rhd1 a4 24. Bxe6 a3 25. Bd7+ Ke7 26. c4 Qe5 27. Rc2 Rcd8 28. Rcd2 Bc8 29. Qh3 f5 30. Bxc8 Rxd2 31. Rxd2 Rxc8 32. Qh4+ Kf7 33. Qh7+ Kf6 34. Qd7 Rc5 35. Qd6+ Qxd6 36. Rxd6+ Ke5 37. Rd5+ 1-0

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "8"]
[White "Omariev, Maksim"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2304"]
[BlackElo "2263"]
[PlyCount "31"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. g4 d5 2. Bg2 c6 3. g5 e5 4. d4 exd4 5. Qxd4 Nd7 6. c4 Bc5 7. Qxg7 Qb6 8. Qxh8 Bxf2+ 9. Kf1 Kf8 10. Nh3 Be3 11. Na3 Bd4 12. Qxh7 dxc4 13. Nxc4 Qb4 14. Qd3 Bg7 15. Bf4 Qe7 16. Bd6 1-0

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "1"]
[White "Rodchenkov, Sergey D"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2346"]
[BlackElo "2263"]
[PlyCount "101"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. 0-0 0-0 6. Re1 Re8 7. Nbd2 Bb6 8. c3 h6 9. b4 a6 10. a4 d5 11. exd5 Nxd5 12. Qb3 Be6 13. a5 Ba7 14. Ne4 Qd7 15. Bd2 Rad8 16. Rad1 Bg4 17. Ng3 Bxf3 18. gxf3 f6 19. d4 Kh8 20. Bc1 Nf4 21. Bxf4 exf4 22. Ne4 Qh3 23. Nd2 Ne7 24. Be6 Qh4 25. Re4 Nc8 26. Bxc8 Rxc8 27. Rde1 Rxe4 28. Rxe4 Qg5+ 29. Kf1 Rd8 30. Qf7 Bb8 31. Re8+ Rxe8 32. Qxe8+ Kh7 33. Qxb8 Qf5 34. Qe8 Qh3+ 35. Kg1 Qh4 36. Qe4+ Kh8 37. Qg6 Qh3 38. Qg4 Qxg4+ 39. fxg4 g6 40. f3 Kg7 41. Kf2 Kf7 42. Ke2 Ke6 43. Kd3 c6 44. Ne4 f5 45. Nc5+ Ke7 46. Nxb7 fxg4 47. fxg4 g5 48. Ke4 Kd7 49. Nc5+ Kd6 50. Nxa6 Kd7 51. Nc5+ 1-0

[Event "Titled Tuesday intern op 19th May"]
[Site "Chess.com INT"]
[Date "2020.05.19"]
[Round "10"]
[White "Titichoca Daza, Daniel Henry"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2090"]
[BlackElo "2263"]
[PlyCount "81"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "10"]
[EventCountry "USA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 Nc6 5. g3 Be7 6. Bg2 e5 7. c3 0-0 8. 0-0 Re8 9. a3 Bg4 10. h3 Bh5 11. Qe2 Bf8 12. b4 a6 13. Bb2 Qd7 14. c4 dxe4 15. Nxe4 Nxe4 16. dxe4 Rad8 17. g4 Bg6 18. Rad1 Qe7 19. Rd5 f6 20. Nh4 Bf7 21. Nf5 Qe6 22. Rfd1 Qc8 23. c5 g6 24. Ng3 Bxd5 25. exd5 Nd4 26. Qc4 b5 27. Qc1 Bg7 28. Rxd4 exd4 29. Bxd4 Re7 30. Qc3 Kf7 31. g5 Rde8 32. gxf6 Re1+ 33. Kh2 Bh6 34. d6 Qe6 35. dxc7 Rc8 36. Qf3 Rxc7 37. Ne4 Rxe4 38. Qxe4 Qxe4 39. Bxe4 Bf4+ 40. Kg2 Rd7 41. Bc3 1-0

[Event "Foxwoods op 04th"]
[Site "Connecticut"]
[Date "2002.03.28"]
[Round "1"]
[White "Shulman, Yuri"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2596"]
[BlackElo "2289"]
[PlyCount "89"]
[EventDate "2002.03.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "CBM 087 Extra"]
[Source "ChessBase"]
[SourceDate "2002.05.03"]
[SourceVersion "2"]
[SourceVersionDate "2002.08.09"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Bg4 7. Qb3 Qb6 8. Bd2 Na6 9. h3 Bh5 10. g4 Bg6 11. Nxg6 hxg6 12. g5 Nd7 13. f4 c5 14. cxd5 Qxb3 15. axb3 Nb4 16. dxe6 fxe6 17. Rc1 cxd4 18. exd4 Kf7 19. Ke2 Nb8 20. Bg2 N8c6 21. Be3 Rd8 22. Rhd1 Ne7 23. d5 Nexd5 24. Nxd5 Nxd5 25. Rc7+ Kg8 26. Rxb7 Bc5 27. Bxd5 Bxe3 28. Bxe6+ Kh7 29. Rxd8 Rxd8 30. Kxe3 Re8 31. Kd4 Rxe6 32. Rxa7 Re2 33. b4 Rxb2 34. Kc3 Rh2 35. Rd7 Rxh3+ 36. Kc4 Rf3 37. Rd4 Rf1 38. b5 Rc1+ 39. Kd5 Rc8 40. b6 Rd8+ 41. Kc5 Rc8+ 42. Kb5 Rd8 43. Kc4 Rf8 44. b7 Rc8+ 45. bxc8N 1-0

[Event "Foxwoods op 03rd"]
[Site "Connecticut"]
[Date "2001.04.13"]
[Round "3"]
[White "Friedel, Joshua E"]
[Black "Koenig, David E"]
[Result "1/2-1/2"]
[ECO "C56"]
[WhiteElo "2174"]
[BlackElo "2280"]
[PlyCount "86"]
[EventDate "2001.04.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[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 Qh5 9. Nxe4 Be6 10. Bg5 h6 11. Bf6 Qg6 12. Nh4 Qg4 13. Nd6+ Kd7 14. Qxg4 Bxg4 15. Nxf7 Rg8 16. Bxd4 g5 17. Nf3 Bxf3 18. gxf3 Nxd4 19. Rad1 c5 20. c3 Re8 21. Ne5+ Rxe5 22. Rxe5 Bd6 23. cxd4 Bxe5 24. dxe5+ Ke6 25. Rd6+ Kxe5 26. Rxh6 Rd8 27. Rh7 b5 28. Re7+ Kf4 29. Rf7+ Ke5 30. Re7+ Kd4 31. Rxa7 c4 32. Kf1 Kd3 33. Re7 Kc2 34. Re2+ Kb1 35. a3 Rd3 36. h4 gxh4 37. Kg2 Kc1 38. Kh3 Kd1 39. Re3 Rd2 40. b3 Rxf2 41. bxc4 bxc4 42. Rc3 Kd2 43. Rxc4 Rxf3+ 1/2-1/2

[Event "Philadelphia National op 31st"]
[Site "Philadelphia"]
[Date "2000.11.28"]
[Round "6"]
[White "Koenig, David E"]
[Black "Times, Jerald W"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2310"]
[PlyCount "102"]
[EventDate "2000.11.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 079 Extra"]
[Source "ChessBase"]
[SourceDate "2001.01.11"]
[SourceVersion "2"]
[SourceVersionDate "2001.01.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 Ne7 7. Nf4 c5 8. h4 cxd4 9. Nb5 Nec6 10. h5 Be4 11. f3 g5 12. Nh3 h6 13. fxe4 dxe4 14. c3 d3 15. Nf2 a6 16. Nxe4 axb5 17. Bxd3 Nxe5 18. Bxb5+ Nbc6 19. Qe2 f5 20. gxf5 exf5 21. Bxg5 hxg5 22. Rd1 Qe7 23. Nd6+ Qxd6 24. Rxd6 Bxd6 25. Rf1 f4 26. Qe4 0-0-0 27. Kd1 Rhf8 28. Kc2 Kc7 29. h6 Ng4 30. Rg1 Ne3+ 31. Kb1 g4 32. Rh1 g3 33. Be2 g2 34. Rg1 f3 35. Bxf3 Rde8 36. Qh7+ Re7 37. Qxe7+ Nxe7 38. Bxg2 Nxg2 39. Rxg2 Rh8 40. a4 Rxh6 41. Ka2 Rh4 42. b4 Rh2 43. Rxh2 Bxh2 44. Kb3 Nc6 45. Kc4 Bg1 46. a5 Nd8 47. b5 Kd6 48. Kb4 Kd5 49. c4+ Kd6 50. Kb3 Bf2 51. b6 Bxb6 0-1

[Event "Philadelphia National op 31st"]
[Site "Philadelphia"]
[Date "2000.11.28"]
[Round "5"]
[White "Kriventsov, Stanislav G"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "C83"]
[WhiteElo "2323"]
[BlackElo "2310"]
[PlyCount "81"]
[EventDate "2000.11.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 079 Extra"]
[Source "ChessBase"]
[SourceDate "2001.01.11"]
[SourceVersion "2"]
[SourceVersionDate "2001.01.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 a6 6. Ba4 b5 7. Bb3 d5 8. dxe5 Be6 9. Be3 Be7 10. c3 Qd7 11. Nbd2 Rd8 12. Bc2 Nxd2 13. Qxd2 Bf5 14. Rad1 0-0 15. Rfe1 Na5 16. Bxf5 Qxf5 17. b3 Nb7 18. Nd4 Qg6 19. f4 f5 20. b4 c5 21. Nb3 Qc6 22. a3 a5 23. Rc1 Ra8 24. Red1 Rfd8 25. Qf2 Rac8 26. Qf3 g6 27. h3 Qe6 28. Kh2 Qd7 29. Bf2 h5 30. bxa5 Ra8 31. c4 bxc4 32. Rxc4 Qb5 33. Rc2 c4 34. Nd4 Qd7 35. Rb2 Kh7 36. Nxf5 gxf5 37. Qxh5+ Kg8 38. Qg6+ Kf8 39. e6 Qe8 40. Qh6+ Kg8 41. Bd4 1-0

[Event "Philadelphia National op 31st"]
[Site "Philadelphia"]
[Date "2000.11.27"]
[Round "3"]
[White "Karklins, Andrew"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2304"]
[BlackElo "2310"]
[PlyCount "71"]
[EventDate "2000.11.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 079 Extra"]
[Source "ChessBase"]
[SourceDate "2001.01.11"]
[SourceVersion "2"]
[SourceVersionDate "2001.01.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. Nc3 d6 6. a3 0-0 7. 0-0 Bg4 8. h3 Bh5 9. g4 Nxg4 10. hxg4 Bxg4 11. Be3 Kh8 12. Kg2 Qd7 13. Rh1 f5 14. Qg1 fxe4 15. Nd2 exd3 16. Bxd3 Bf5 17. Qh2 Bxd3 18. cxd3 Qf5 19. Qh5 Rad8 20. Qxf5 Rxf5 21. Nd5 Rd7 22. Rh3 Bf8 23. Rc1 Kg8 24. b4 Rff7 25. Rf3 a6 26. a4 a5 27. b5 Nb4 28. Nxb4 axb4 29. a5 d5 30. Bc5 Rxf3 31. Kxf3 e4+ 32. dxe4 Bxc5 33. Rxc5 dxe4+ 34. Ke2 Rd3 35. Rxc7 Ra3 36. a6 1-0

[Event "Philadelphia National op 31st"]
[Site "Philadelphia"]
[Date "2000.11.27"]
[Round "4"]
[White "Koenig, David E"]
[Black "Grechikhin, Vladimir"]
[Result "1-0"]
[ECO "C60"]
[WhiteElo "2310"]
[BlackElo "2170"]
[PlyCount "45"]
[EventDate "2000.11.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 079 Extra"]
[Source "ChessBase"]
[SourceDate "2001.01.11"]
[SourceVersion "2"]
[SourceVersionDate "2001.01.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. 0-0 g6 5. d4 exd4 6. Bg5 Bg7 7. c3 dxc3 8. Nxc3 f6 9. Bf4 0-0 10. Qd2 d6 11. h3 Bd7 12. Rac1 Rc8 13. Rfd1 Kh8 14. Nd5 Nxd5 15. exd5 Ne5 16. Nd4 Re8 17. Qb4 c5 18. dxc6 bxc6 19. Bxe5 fxe5 20. Nxc6 Qb6 21. Qxd6 Bxh3 22. gxh3 Qxb5 23. Nxa7 1-0

[Event "New York op"]
[Site "New York"]
[Date "2000.05.11"]
[Round "9"]
[White "Bonin, Jay R"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2419"]
[BlackElo "2236"]
[PlyCount "51"]
[EventDate "2000.05.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 076 Extra"]
[Source "ChessBase"]
[SourceDate "2000.07.11"]
[SourceVersion "1"]
[SourceVersionDate "2000.07.11"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. e3 b5 6. cxd5 cxd5 7. Bd3 Bg4 8. h3 Bxf3 9. Qxf3 e6 10. Bd2 Nbd7 11. a4 b4 12. Na2 a5 13. Nc1 Bd6 14. Nb3 0-0 15. 0-0 Qe7 16. Rfc1 e5 17. Bb5 Ne4 18. Bc6 Nb6 19. Bxa8 Rxa8 20. Rc6 Qb7 21. Rac1 exd4 22. exd4 Nxa4 23. Nxa5 Qd7 24. Bf4 Rxa5 25. Bxd6 Nac3 26. Rc7 1-0

[Event "New York op"]
[Site "New York"]
[Date "2000.05.10"]
[Round "8"]
[White "Koenig, David E"]
[Black "Gonzales, Jayson"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2236"]
[BlackElo "2411"]
[PlyCount "93"]
[EventDate "2000.05.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 076 Extra"]
[Source "ChessBase"]
[SourceDate "2000.07.11"]
[SourceVersion "1"]
[SourceVersionDate "2000.07.11"]
[SourceQuality "1"]

1. e4 d6 2. Nc3 c6 3. d4 Nf6 4. f4 Qa5 5. Bd3 e5 6. dxe5 dxe5 7. f5 b5 8. Qe2 Na6 9. Nf3 b4 10. Nd1 b3+ 11. Bd2 Qxa2 12. Rxa2 bxa2 13. Bxa6 a1Q 14. Bxc8 Rxc8 15. Qc4 Bd6 16. 0-0 0-0 17. Bc3 Qc1 18. Nd2 Qxc2 19. Ne3 Bc5 20. Qxc5 Qd3 21. Nec4 Nd7 22. Qxa7 Ra8 23. Qc7 Rfc8 24. Qd6 Qxd6 25. Nxd6 Rc7 26. f6 Nxf6 27. Bxe5 Ng4 28. Bf4 Rca7 29. h3 Nf6 30. Be5 Nd7 31. Bc3 Ra1 32. Nf5 Rxf1+ 33. Kxf1 f6 34. Ne7+ Kf7 35. Nxc6 Nc5 36. Ke2 Ke6 37. Ke3 Ra1 38. Nd4+ Kd7 39. N2b3 Nxb3 40. Nxb3 Rb1 41. Nd4 Rg1 42. Kf2 Rc1 43. Nf5 g6 44. Ne3 Ke6 45. Ke2 Rb1 46. Kf2 Rc1 47. g4 1-0

[Event "New York op"]
[Site "New York"]
[Date "2000.05.09"]
[Round "7"]
[White "Miton, Kamil"]
[Black "Koenig, David E"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "2425"]
[BlackElo "2236"]
[PlyCount "63"]
[EventDate "2000.05.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 076 Extra"]
[Source "ChessBase"]
[SourceDate "2000.07.11"]
[SourceVersion "1"]
[SourceVersionDate "2000.07.11"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. a4 e5 5. Nf3 exd4 6. Qxd4 Qxd4 7. Nxd4 Bc5 8. Nc2 Be6 9. e4 Na6 10. Be3 0-0-0 11. Be2 Ne7 12. 0-0 Bxe3 13. Nxe3 Rd2 14. Bxc4 Rxb2 15. Bxa6 bxa6 16. a5 Rd8 17. Rac1 Rd4 18. h3 Rb3 19. Rfe1 Kc7 20. Re2 Ra3 21. Ncd5+ Nxd5 22. exd5 Bxd5 23. Rec2 Rxa5 24. Nxd5+ Rdxd5 25. Rxc6+ Kd8 26. Rc8+ Ke7 27. R1c7+ Rd7 28. Rxd7+ Kxd7 29. Ra8 Ra1+ 30. Kh2 a5 31. Rxa7+ Ke6 32. g4 1/2-1/2

[Event "New York op"]
[Site "New York"]
[Date "2000.05.07"]
[Round "5"]
[White "Ritter, Mark"]
[Black "Koenig, David E"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2415"]
[BlackElo "2236"]
[PlyCount "79"]
[EventDate "2000.05.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 076 Extra"]
[Source "ChessBase"]
[SourceDate "2000.07.11"]
[SourceVersion "1"]
[SourceVersionDate "2000.07.11"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Nbd2 Bf5 4. g3 c6 5. Bg2 h6 6. c4 e6 7. 0-0 Nbd7 8. b3 Bd6 9. Bb2 Qc7 10. Rc1 0-0 11. a3 Bh7 12. Ne1 Rfe8 13. Nd3 Bxd3 14. exd3 dxc4 15. dxc4 c5 16. dxc5 Bxc5 17. b4 Bd6 18. Nb3 Rad8 19. Qe2 Be5 20. Nd4 Bxd4 21. Bxd4 e5 22. Be3 b6 23. c5 bxc5 24. bxc5 e4 25. Rfd1 Ne5 26. Rxd8 Rxd8 27. Bf4 g5 28. Bxe5 Qxe5 29. c6 Rc8 30. Qe3 Rc7 31. h3 Qe6 32. Qc5 Kg7 33. Kh2 Kg6 34. Rc3 Kg7 35. Bf1 Qd5 36. Ba6 Qxc5 37. Rxc5 Ng8 38. g4 Ne7 39. Bb5 Kf6 40. Ba4 1/2-1/2

[Event "New York op"]
[Site "New York"]
[Date "2000.05.06"]
[Round "3"]
[White "Bu, Xiangzhi"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "D18"]
[WhiteElo "2565"]
[BlackElo "2236"]
[PlyCount "99"]
[EventDate "2000.05.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 076 Extra"]
[Source "ChessBase"]
[SourceDate "2000.07.11"]
[SourceVersion "1"]
[SourceVersionDate "2000.07.11"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 e6 7. e3 Bb4 8. Bxc4 Nbd7 9. Nxd7 Qxd7 10. 0-0 0-0 11. Qb3 Bd6 12. Rd1 Qe7 13. f3 Qc7 14. h3 e5 15. dxe5 Bxe5 16. e4 Bg6 17. Ne2 Nh5 18. Be3 b6 19. Rac1 Rad8 20. Bd5 c5 21. Rd2 Nf6 22. Rcd1 Nxd5 23. Rxd5 c4 24. Qb5 Rxd5 25. Rxd5 f6 26. Rd7 a6 27. Qd5+ Bf7 28. Rxc7 Bxd5 29. Ra7 Ra8 30. Bxb6 Rxa7 31. Bxa7 Bc6 32. Bd4 Bxd4+ 33. Nxd4 Bxa4 34. Kf2 Kf7 35. Ke3 Bd7 36. Kd2 Kg6 37. h4 Kh5 38. g3 Bh3 39. Nf5 Kg6 40. Ne3 Kf7 41. Kc3 g5 42. hxg5 fxg5 43. g4 Ke6 44. Kd4 h6 45. Kxc4 Ke5 46. Kd3 h5 47. gxh5 Be6 48. Ng4+ Kf4 49. h6 Bg8 50. Nf6 1-0

[Event "New York op"]
[Site "New York"]
[Date "2000.05.05"]
[Round "1"]
[White "Agrest, Evgenij"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "D47"]
[WhiteElo "2604"]
[BlackElo "2236"]
[PlyCount "87"]
[EventDate "2000.05.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 076 Extra"]
[Source "ChessBase"]
[SourceDate "2000.07.11"]
[SourceVersion "1"]
[SourceVersionDate "2000.07.11"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 e6 5. d4 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Be2 Bb7 9. 0-0 a6 10. e4 b4 11. e5 bxc3 12. exf6 gxf6 13. bxc3 c5 14. Rb1 Bc6 15. Bf4 Qa5 16. c4 cxd4 17. Nxd4 Be4 18. Bf3 Bxf3 19. Qxf3 Rc8 20. Qb7 Qc5 21. Rfd1 e5 22. Ne6 Qc6 23. Qxc6 Rxc6 24. Nxf8 Rxf8 25. Bh6 Rg8 26. Rb7 Nb6 27. c5 Nc8 28. Rbd7 Rg6 29. Rd8+ Ke7 30. Bf8+ Ke6 31. h3 h5 32. Re8+ Kf5 33. Rdd8 Na7 34. Re7 Nb5 35. Rxf7 Rg8 36. Rdd7 Nc3 37. Rd6 Rxd6 38. cxd6 Ne2+ 39. Kf1 Nd4 40. Be7 Ke6 41. Rxf6+ Kd7 42. Rf8 Rg6 43. Rd8+ Ke6 44. Ra8 1-0

[Event "Foxwoods op 02nd"]
[Site "Connecticut"]
[Date "2000.04.23"]
[Round "6"]
[White "Blatny, Pavel"]
[Black "Koenig, David E"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2512"]
[BlackElo "2236"]
[PlyCount "57"]
[EventDate "2000.04.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 c5 4. e3 a6 5. d4 Nc6 6. Nbd2 e6 7. a3 Be7 8. Bd3 0-0 9. Ng5 cxd4 10. exd4 Ne4 11. Ngxe4 dxe4 12. Bxe4 Nxd4 13. Nc4 Bf6 14. Qd3 Nf5 15. 0-0-0 Bxb2+ 16. Kxb2 Qf6+ 17. Qc3 Qxc3+ 18. Kxc3 Rb8 19. Nb6 e5 20. Kb4 Be6 21. Nd7 Bxd7 22. Rxd7 Nd4 23. c3 Rfd8 24. Rxd8+ Rxd8 25. Bxb7 Nxb3 26. Bxa6 Rb8+ 27. Bb5 Nd2 28. Re1 f6 29. a4 1-0

[Event "Foxwoods op 02nd"]
[Site "Connecticut"]
[Date "2000.04.20"]
[Round "1"]
[White "Koenig, David E"]
[Black "Shabalov, Alexander"]
[Result "0-1"]
[ECO "B26"]
[WhiteElo "2236"]
[BlackElo "2592"]
[PlyCount "100"]
[EventDate "2000.04.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 e5 7. Qd2 Nd4 8. Nd5 Be6 9. c3 Bxd5 10. exd5 Nf5 11. Nh3 Nge7 12. 0-0 0-0 13. f4 Nxe3 14. Qxe3 Qb6 15. Rf2 Rae8 16. Qd2 h6 17. Re1 Qa6 18. Rff1 b5 19. Be4 f5 20. Bf3 Kh7 21. Kh1 c4 22. g4 cxd3 23. gxf5 gxf5 24. Bh5 Rd8 25. Qxd3 Qxa2 26. Ra1 Qxd5+ 27. Qxd5 Nxd5 28. Rxa7 Ra8 29. Rb7 Rab8 30. Ra7 Nf6 31. Be2 e4 32. Rd1 d5 33. Rd4 Rfc8 34. Rb4 Kg6 35. Ra5 Ng4 36. Kg2 d4 37. cxd4 Rc2 38. Ng1 Ne3+ 39. Kg3 Rc1 40. Nh3 Nc2 41. Rbxb5 Rxb5 42. Bxb5 Nxd4 43. Be8+ Kf6 44. Ra3 Bf8 45. Ra6+ Ke7 46. Bh5 Kd7 47. Ra5 Bc5 48. b4 Rc3+ 49. Kg2 Rc2+ 50. Kg3 Bxb4 0-1

[Event "Marshall CC GP op"]
[Site "New York"]
[Date "2000.01.23"]
[Round "3"]
[White "Koenig, David E"]
[Black "Dubinsky, Roman"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2236"]
[BlackElo "2305"]
[PlyCount "101"]
[EventDate "2000.01.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Be3 Rb8 7. f4 e6 8. Qd2 b5 9. e5 Nd4 10. Ne4 dxe5 11. c3 exf4 12. Bxf4 e5 13. Bg5 f6 14. cxd4 fxg5 15. dxc5 g4 16. Ne2 Nh6 17. Nd6+ Kf8 18. 0-0+ Nf5 19. Nc3 Be6 20. Ncxb5 Kg8 21. Rxf5 gxf5 22. Nxa7 Qc7 23. Nc6 h6 24. Rc1 Rf8 25. b4 Bf6 26. Qe2 Qg7 27. Nd4 Qg5 28. Rf1 Bd7 29. N4xf5 Rh7 30. Bd5+ Kh8 31. c6 Bxf5 32. Rxf5 Qc1+ 33. Kg2 h5 34. Qf2 Qh6 35. b5 h4 36. gxh4 Be7 37. c7 Qxd6 38. Rxf8+ Bxf8 39. c8Q Qxd5+ 40. Kg1 Rf7 41. Qxf8+ Rxf8 42. Qxf8+ Kh7 43. Qf5+ Kh8 44. Qh5+ Kg7 45. Qxg4+ Kh8 46. Qc8+ Kg7 47. Qc7+ Kh8 48. Qc4 Qd6 49. a4 Qg6+ 50. Kf2 Qg7 51. Qc8+ 1-0

[Event "Marshall CC GP op"]
[Site "New York"]
[Date "2000.01.23"]
[Round "4"]
[White "Stripunsky, Alexander"]
[Black "Koenig, David E"]
[Result "0-1"]
[ECO "C81"]
[WhiteElo "2512"]
[BlackElo "2236"]
[PlyCount "116"]
[EventDate "2000.01.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[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 0-0 11. c4 bxc4 12. Bxc4 Bc5 13. Be3 Bxe3 14. Qxe3 Qb8 15. Bb3 Na5 16. Nbd2 Qa7 17. Nd4 Nxd2 18. Qxd2 Nxb3 19. axb3 c5 20. Ne2 Qb8 21. Rac1 Rc8 22. Qg5 h6 23. Qg3 Ra7 24. b4 Qxb4 25. Nf4 Rd7 26. h3 Kh8 27. Nh5 Rg8 28. Kh2 c4 29. Qf4 Kh7 30. Rc3 Qxb2 31. Rg3 f5 32. Rd4 Qe2 33. Rf3 Rf8 34. Ng3 Qb2 35. Rd2 Qb6 36. Ne2 g5 37. Qd4 Rb8 38. Qa1 Qc7 39. Nd4 Qxe5+ 40. g3 Rb6 41. Re2 Qf6 42. Rfe3 Bf7 43. Re5 Bg6 44. Qa3 f4 45. Re7+ Rxe7 46. Rxe7+ Kg8 47. Qc5 fxg3+ 48. Kxg3 Qf4+ 49. Kg2 Be4+ 50. Rxe4 Qxe4+ 51. Kh2 Rf6 52. f3 Qe5+ 53. Kg2 Qd6 54. Qc8+ Rf8 55. Qb7 Rb8 56. Qa7 Rb2+ 57. Kf1 Qa3 58. Qa8+ Kh7 0-1

[Event "Marshall CC GP op"]
[Site "New York"]
[Date "2000.01.22"]
[Round "2"]
[White "Koenig, David E"]
[Black "Bonin, Jay R"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2236"]
[BlackElo "2419"]
[PlyCount "81"]
[EventDate "2000.01.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d6 3. Bc4 d5 4. exd5 cxd5 5. Bd3 Nc6 6. c3 Nf6 7. Bf4 g6 8. Nd2 Bg7 9. Ngf3 0-0 10. 0-0 Bg4 11. h3 Bxf3 12. Nxf3 a6 13. Qe2 Nd7 14. Rfe1 Re8 15. c4 Nxd4 16. Nxd4 Bxd4 17. cxd5 Qb6 18. Rab1 Rac8 19. h4 Nf6 20. Qf3 Nxd5 21. Qxd5 Bxf2+ 22. Kh1 Red8 23. Qf3 Bxe1 24. Rxe1 Qf6 25. Rf1 Qxb2 26. h5 Rc5 27. h6 f6 28. Qe4 Rh5+ 29. Bh2 Qd2 30. Bc4+ Kf8 31. Qe6 Rxh2+ 32. Kxh2 Qd6+ 33. Kg1 Qxe6 34. Bxe6 Rd6 35. Bb3 Ke8 36. Rc1 Kd7 37. Bg8 Rd4 38. g3 Rg4 39. Kg2 Rg5 40. Bxh7 Ke8 41. Bxg6+ 1-0

[Event "Marshall CC GP op"]
[Site "New York"]
[Date "2000.01.22"]
[Round "1"]
[White "Remsen, Tiffany"]
[Black "Koenig, David E"]
[Result "0-1"]
[ECO "A11"]
[BlackElo "2236"]
[PlyCount "66"]
[EventDate "2000.01.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. g3 dxc4 4. a4 Nf6 5. Qc2 Qd5 6. Na3 b5 7. Bg2 Bf5 8. Qd1 e6 9. Nh4 Be4 10. 0-0 Bxg2 11. Nxg2 Nbd7 12. Nf4 Qf5 13. b3 e5 14. Ng2 Bc5 15. e3 cxb3 16. Qxb3 a6 17. Bb2 0-0 18. Rad1 Bd6 19. d4 e4 20. Nh4 Qh3 21. f4 exf3 22. Rxf3 Rae8 23. Re1 Ne4 24. Nf5 Nd2 25. Qd1 Nxf3+ 26. Qxf3 Re6 27. Nxd6 Rxd6 28. Rc1 Rh6 29. Qh1 Qe6 30. Qf3 Re8 31. axb5 axb5 32. Re1 Qb3 33. Bc1 b4 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1999.02.15"]
[Round "6"]
[White "Koenig, David E"]
[Black "Bakker, Andrew"]
[Result "1-0"]
[ECO "B26"]
[PlyCount "67"]
[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. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 Nge7 8. Bh6 Bxh6 9. Qxh6 Nd4 10. 0-0-0 b5 11. Nce2 Nec6 12. Nxd4 cxd4 13. Nf3 Qa5 14. Qg7 Rf8 15. Nxd4 Bd7 16. Nxc6 Bxc6 17. Kb1 Rc8 18. d4 Bd7 19. d5 Qc7 20. Rd2 a5 21. dxe6 Bxe6 22. Qd4 Ke7 23. f4 Qc5 24. Re1 Rfd8 25. f5 gxf5 26. exf5 Qxf5 27. Rf2 Qg6 28. Be4 Qg5 29. Bxh7 Rc5 30. Bd3 Rb8 31. Qe3 Qd5 32. b3 a4 33. Rf5 Qc6 34. Rxf7+ 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1999.02.15"]
[Round "5"]
[White "Koenig, David E"]
[Black "Mont Reynaud, Jordy"]
[Result "1-0"]
[ECO "B26"]
[BlackElo "2225"]
[PlyCount "77"]
[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. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 Nd4 8. Nd1 h5 9. c3 Nc6 10. Nf3 Qc7 11. d4 b6 12. 0-0 Nf6 13. Ng5 Ba6 14. Re1 Ng4 15. d5 exd5 16. exd5 Nce5 17. Bf4 0-0-0 18. h3 Nh6 19. Ne3 h4 20. b4 Kb8 21. bxc5 Qxc5 22. Ne4 Qc7 23. c4 hxg3 24. fxg3 Nf5 25. c5 Nxe3 26. cxd6 Qd7 27. Qxe3 Nc4 28. Qb3 Bd4+ 29. Kh2 Bxa1 30. Nc5 Qb5 31. d7+ Be5 32. Nxa6+ Qxa6 33. Rxe5 b5 34. Re6+ Kb7 35. Rxa6 Kxa6 36. a4 Nb6 37. Qxb5+ Kb7 38. Qc6+ Ka6 39. Bf1+ 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1999.02.14"]
[Round "3"]
[White "Koenig, David E"]
[Black "Polin, Timothy"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "23"]
[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 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Bc4 Nb6 5. Bb3 c5 6. d3 Nc6 7. Qh5 e6 8. Bg5 Be7 9. Nf3 Nd7 10. Ne4 Bxg5 11. Nfxg5 Qe7 12. Nxf7 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1999.02.14"]
[Round "4"]
[White "Prochnau, Peter"]
[Black "Koenig, David E"]
[Result "0-1"]
[ECO "D12"]
[PlyCount "68"]
[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. d4 d5 2. c4 Bf5 3. Nc3 e6 4. e3 c6 5. Nf3 Nf6 6. Bd3 Bxd3 7. Qxd3 Nbd7 8. 0-0 Bd6 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 Nf6 12. Qe2 h6 13. b3 Qe7 14. Bb2 0-0 15. Bc3 Rfd8 16. Rfe1 a5 17. Rad1 a4 18. Qc2 Bb4 19. Re3 axb3 20. Qxb3 Bxc3 21. Rxc3 Ra7 22. Rb1 Rda8 23. Rc2 Ne4 24. d5 Ra3 25. Qxb7 Qxb7 26. Rxb7 Rxa2 27. Rxa2 Rxa2 28. h3 cxd5 29. cxd5 exd5 30. Rd7 Ra1+ 31. Kh2 Rd1 32. Ne5 Nxf2 33. Nxf7 Rh1+ 34. Kg3 Ne4+ 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1999.02.13"]
[Round "1"]
[White "Koenig, David E"]
[Black "Dorobanov, Svetoslav"]
[Result "1/2-1/2"]
[ECO "B26"]
[BlackElo "2305"]
[PlyCount "90"]
[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. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. Qd2 b5 8. Nge2 b4 9. Nd1 Nd4 10. 0-0 Bg4 11. f3 Bd7 12. f4 Qc8 13. f5 gxf5 14. Nf4 Nf6 15. c3 bxc3 16. bxc3 Nb5 17. a4 Nc7 18. Nf2 0-0 19. exf5 Bxf5 20. Ne4 Ng4 21. Nh5 Nxe3 22. Qxe3 Bg6 23. Nxg7 Kxg7 24. Qg5 f6 25. Qd2 Qa6 26. g4 Kh8 27. Rf3 Bxe4 28. dxe4 Ne6 29. Qd5 Ng5 30. Rf2 Qa5 31. c4 Qc3 32. Raf1 Qd4 33. h4 Nf7 34. g5 Ne5 35. gxf6 e6 36. Qxe6 Rbe8 37. Qd5 Nxc4 38. Qxd4 cxd4 39. Rd1 Ne3 40. Rxd4 Nxg2 41. Kxg2 Re6 42. Rc4 Rexf6 43. Rxf6 Rxf6 44. Rc7 Rf4 45. Rxa7 Rxh4 1/2-1/2

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1999.02.13"]
[Round "2"]
[White "Traldi, Matthew"]
[Black "Koenig, David E"]
[Result "0-1"]
[ECO "C29"]
[WhiteElo "2118"]
[PlyCount "100"]
[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 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 d4 7. Nf3 Nc6 8. Be2 Bc5 9. 0-0 dxc3+ 10. Kh1 0-0 11. Qe1 Nd4 12. Qxc3 Bb6 13. Bd1 Nxf3 14. Bxf3 Bd4 15. Qa5 Bxa1 16. Ba3 c6 17. Qxd8 Rxd8 18. Rxa1 Be6 19. Bc5 Bd5 20. a4 b6 21. Bd6 Bxf3 22. gxf3 f6 23. f4 Kf7 24. Rg1 Rxd6 25. exd6 Rd8 26. Kg2 Rxd6 27. Kf3 Rd4 28. Ra1 Rb4 29. Ke3 Ke6 30. Ra2 Kf5 31. c4 h6 32. h4 Rb1 33. a5 Re1+ 34. Kf2 Rh1 35. Kg3 Rg1+ 36. Kf3 Rf1+ 37. Ke3 Rxf4 38. h5 Rh4 39. axb6 axb6 40. Ra7 Rxh5 41. Rxg7 Rg5 42. Rc7 c5 43. Rc6 h5 44. Rxb6 h4 45. Rb1 h3 46. d4 Rg3+ 47. Kf2 Rg2+ 48. Kf3 cxd4 49. Rh1 Rc2 50. Rxh3 Rc3+ 0-1

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1998.??.??"]
[Round "5"]
[White "Koenig, David E"]
[Black "Shahade, Michael"]
[Result "1-0"]
[ECO "B00"]
[BlackElo "2280"]
[PlyCount "47"]
[EventDate "1998.??.??"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 Nc6 2. Nc3 d6 3. d4 Nf6 4. Bg5 e6 5. f4 Be7 6. Nf3 d5 7. e5 Ne4 8. Bxe7 Qxe7 9. a3 Nxc3 10. bxc3 Bd7 11. Bd3 Na5 12. Qe2 c5 13. Qf2 Rc8 14. Qg3 g6 15. h4 h5 16. 0-0 Ba4 17. Ng5 Kd7 18. f5 gxf5 19. Bxf5 Rhg8 20. Qh3 Rg7 21. Bxe6+ fxe6 22. Rf6 Rxg5 23. hxg5 Bxc2 24. Raf1 1-0

[Event "USA-chT Amateur East"]
[Site "Parsippany"]
[Date "1998.??.??"]
[Round "4"]
[White "McGeorge, Alan"]
[Black "Koenig, David E"]
[Result "0-1"]
[ECO "A40"]
[PlyCount "128"]
[EventDate "1998.??.??"]
[EventType "team"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. Bf4 c5 4. e3 Qb6 5. Nc3 cxd4 6. exd4 Nc6 7. Nb5 d6 8. Bc4 a6 9. Nc3 Nxd4 10. Nd5 Nxf3+ 11. Qxf3 Qc6 12. Qb3 Be6 13. 0-0 Rc8 14. Nxe7 Bxc4 15. Nxc6 Bxb3 16. Na5 Be6 17. Nxb7 Rxc2 18. Nxd6+ Kf8 19. Rab1 Rxb2 20. Rxb2 Bxb2 21. Rb1 Bd4 22. Rb8+ Ke7 23. Ra8 g5 24. Bg3 f5 25. Rxa6 f4 26. Bxf4 gxf4 27. Ne4 Nf6 28. Ng5 Bd5 29. Ra4 Rg8 30. h4 h6 31. Rxd4 hxg5 32. hxg5 Rxg5 33. Rxf4 Rxg2+ 34. Kf1 Rg4 35. Rxg4 Nxg4 36. a3 Bf3 37. Ke1 Kd6 38. Kd2 Kc5 39. Kc3 Nxf2 40. Kd2 Bc6 41. Ke3 Ne4 42. Kd3 Nd6 43. Kc3 Ba4 44. Kb2 Nc4+ 45. Kc3 Nxa3 46. Kd3 Nc4 47. Ke4 Bc2+ 48. Kf4 Kd5 49. Kf3 Ke5 50. Kg4 Be4 51. Kg3 Kf5 52. Kf2 Kf4 53. Ke2 Bc2 54. Kf2 Bd1 55. Ke1 Bg4 56. Kf2 Bf3 57. Kf1 Ke3 58. Ke1 Ne5 59. Kf1 Nd3 60. Kg1 Kf4 61. Kf1 Kg3 62. Kg1 Be2 63. Kh1 Nf4 64. Kg1 Nh3+ 0-1

[Event "USA op Denker"]
[Site "Philadelphia"]
[Date "1993.??.??"]
[Round "?"]
[White "Koenig, David E"]
[Black "Gelman, Geoffrey"]
[Result "1-0"]
[ECO "A25"]
[BlackElo "2230"]
[PlyCount "109"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. e4 d6 6. Nge2 h5 7. h4 Bg4 8. f3 Be6 9. d3 Qd7 10. Rb1 a6 11. b4 Nge7 12. a4 0-0 13. Nd5 b5 14. Nec3 Nd4 15. Bg5 Bxd5 16. cxd5 bxa4 17. Qxa4 Qxa4 18. Nxa4 f6 19. Bd2 Rfb8 20. Kf2 c6 21. dxc6 Nexc6 22. Rhc1 Ra7 23. Bh3 Kf7 24. Nb2 Rab7 25. Nc4 Ke7 26. Ne3 Kd8 27. Nd5 Ne7 28. Nxe7 Rxe7 29. Be3 Reb7 30. Rc4 a5 31. Bxd4 exd4 32. Rxd4 Ke7 33. b5 Rxb5 34. Rc1 Rb2+ 35. Ke3 Bh6+ 36. f4 R8b7 37. Rdc4 R2b6 38. Rc7+ Rxc7 39. Rxc7+ Kd8 40. Rd7+ Ke8 41. Ra7 Rb4 42. Be6 g5 43. Rxa5 Rb1 44. hxg5 fxg5 45. fxg5 Bg7 46. Ra7 Bc3 47. g6 Rg1 48. Kf3 h4 49. gxh4 Be5 50. h5 Kf8 51. Rf7+ Ke8 52. Ke3 Rg2 53. Rf1 Rg5 54. Rf5 Rxf5 55. exf5 1-0

[Event "US Open-92"]
[Site "Los Angeles"]
[Date "1991.??.??"]
[Round "?"]
[White "Koenig, David E"]
[Black "Kolletschek"]
[Result "0-1"]
[ECO "C25"]
[WhiteElo "2290"]
[PlyCount "34"]
[EventDate "1991.07.28"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. d4 g5 5. Bc4 d6 6. Qh5 Nh6 7. Nf3 Bg4 8. Qxg5 Bxf3 9. Qxf4 Bh5 10. Nd5 Bg7 11. Qg3 Bg6 12. Bg5 f6 13. Bxh6 Bxh6 14. Qh3 Bg7 15. Qe6+ Kf8 16. Nf4 Qe7 17. Qd5 Bf7 0-1

[Event "US Open-92"]
[Site "Los Angeles"]
[Date "1991.??.??"]
[Round "?"]
[White "Koenig, David E"]
[Black "Rogers, Bradley K"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "2290"]
[PlyCount "101"]
[EventDate "1991.07.28"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ngf3 Qb6 8. Nb3 cxd4 9. cxd4 f6 10. Be2 fxe5 11. fxe5 Bb4+ 12. Bd2 0-0 13. Bxb4 Nxb4 14. 0-0 a5 15. Kh1 a4 16. Nc1 Nc6 17. Qd3 Rf4 18. Ng5 Rxf1+ 19. Bxf1 Nf8 20. Nf3 Bd7 21. Qd2 Be8 22. Bd3 Rc8 23. Ne2 Nb4 24. Bb1 Ng6 25. Nc3 Qa6 26. Kg1 a3 27. Nd1 axb2 28. Nxb2 Qa3 29. Nd3 Nxd3 30. Bxd3 Rc3 31. Be2 b5 32. Ng5 Nf8 33. Bg4 Rc6 34. Rb1 h6 35. Nf3 Bg6 36. Rb3 Qa6 37. h4 Rc2 38. Qb4 Qxa2 39. Bh3 Rc1+ 40. Kh2 Qe2 41. Qxb5 Qe4 42. Kg3 Bh5 43. Qb4 Rf1 44. Qd2 Ng6 45. Bxe6+ Kh7 46. Rb8 Bxf3 47. Bg8+ Kh8 48. Bxd5+ Kh7 49. Bxe4 Bxe4 50. Qe2 Rb1 51. Qxe4 1-0

[Event "US Open-92"]
[Site "Los Angeles"]
[Date "1991.??.??"]
[Round "?"]
[White "Koenig, David E"]
[Black "Schloss, Jamie"]
[Result "1-0"]
[ECO "B19"]
[PlyCount "57"]
[EventDate "1991.07.28"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bf4 Ngf6 12. 0-0-0 Be7 13. c4 Qa5 14. Kb1 0-0 15. Ne4 Rfd8 16. Bd2 Qa6 17. Nxf6+ Bxf6 18. Bc3 Nc5 19. Qe2 Na4 20. Bb4 Qb6 21. Qd2 a5 22. Ba3 e5 23. Qc2 e4 24. Nd2 Qa6 25. Nxe4 Bxd4 26. Rh3 b5 27. Be7 Nxb2 28. Rxd4 Rxd4 29. Nf6+ 1-0

[Event "US Open-92"]
[Site "Los Angeles"]
[Date "1991.??.??"]
[Round "?"]
[White "Koenig, David E"]
[Black "Stevens, Tom"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2290"]
[PlyCount "39"]
[EventDate "1991.07.28"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nh6 2. d4 g6 3. Nc3 Bg7 4. Be3 d6 5. f3 f6 6. Bc4 e5 7. Nge2 f5 8. dxe5 Bxe5 9. Bxh6 Qh4+ 10. g3 Qxh6 11. f4 Bxc3+ 12. Nxc3 Qg7 13. Qe2 Kd8 14. e5 Re8 15. 0-0-0 Bd7 16. Qf3 Nc6 17. exd6 Rc8 18. Nb5 Re4 19. dxc7+ Ke7 20. Qa3+ 1-0

