[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.07"]
[Round "9"]
[White "Kumar, Naman"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "1868"]
[BlackElo "2012"]
[PlyCount "119"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 0-0 6. Bb3 d6 7. 0-0 Be6 8. Bc2 d5 9. Qe2 dxe4 10. dxe4 Nd7 11. Rd1 Qc8 12. Be3 Nb6 13. Nbd2 Rd8 14. b4 f6 15. a4 a5 16. b5 Nb8 17. Bb3 Bxb3 18. Nxb3 Rxd1+ 19. Rxd1 Qe6 20. Bxb6 cxb6 21. Rd5 Kf8 22. Qc4 Nd7 23. Qc7 Nc5 24. Nxc5 Bxc5 25. Rd7 Be7 26. Qxb7 Rd8 27. Rxd8+ Bxd8 28. Nd2 Qd6 29. Qd5 Be7 30. Qxd6 Bxd6 31. Nc4 Bc5 32. Kf1 Ke7 33. Ke2 Ke6 34. f3 Kd7 35. Kd3 Ke6 36. g3 g5 37. g4 Kd7 38. Kd2 Ke6 39. Kd1 Ke7 40. Kc2 Ke6 41. Kd3 Kd7 42. Nd2 Kd6 43. Nf1 Bg1 44. h3 Bf2 45. Ke2 Bg1 46. Ng3 Ke6 47. Kd3 Bc5 48. Kc4 Bf2 49. Nf5 Bg1 50. Ng7+ Kf7 51. Nh5 Ke6 52. Ng7+ Kf7 53. Nf5 Ke6 54. h4 Bf2 55. h5 Bg1 56. Ng7+ Kd6 57. Ne8+ Ke6 58. h6 Bf2 59. Ng7+ Kd6 60. Nf5+ 1/2-1/2

[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.06"]
[Round "8"]
[White "Piasetski, Leon David"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "2242"]
[BlackElo "2012"]
[PlyCount "51"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. c4 g6 2. d4 Bg7 3. e4 d6 4. Nc3 Nc6 5. Nge2 e5 6. d5 Nce7 7. Ng3 f5 8. exf5 Nxf5 9. Nxf5 Bxf5 10. c5 Nf6 11. Bb5+ Kf7 12. c6 b6 13. Bg5 h6 14. Bh4 g5 15. Bg3 h5 16. f3 h4 17. Bf2 Nh5 18. g4 hxg3 19. hxg3 Nf6 20. Rf1 Rh2 21. Bd3 Bh3 22. Rg1 e4 23. Bxe4 Nxe4 24. Nxe4 Bxb2 25. Rb1 Bf6 26. g4 1/2-1/2

[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.05"]
[Round "6"]
[White "Ghazarian, Kirk Vagho"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "D06"]
[WhiteElo "2226"]
[BlackElo "2012"]
[PlyCount "94"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e5 6. Nf3 exd4 7. Nxd4 Bc5 8. Be3 0-0 9. Ne6 Bxe6 10. Bxc5 Qxd1+ 11. Rxd1 Re8 12. Be2 Nbd7 13. Bd4 c5 14. Be3 a6 15. f4 Bf5 16. e5 Ng4 17. Bg1 b5 18. h3 Nh6 19. g4 Be6 20. Bf3 Ra7 21. Ne4 Rc7 22. Nd6 Re7 23. Bh2 f5 24. Rg1 g6 25. Bg3 Bxa2 26. Ra1 Bb3 27. Rxa6 b4 28. Ra8+ Nf8 29. Ne8 Ra7 30. Rc8 Ra1+ 31. Kf2 Ra2 32. Rc1 Rxb2+ 33. Ke3 Be6 34. Nf6+ Kg7 35. R8xc5 Ra7 36. Rc7+ Rxc7 37. Rxc7+ Nf7 38. Re7 Rb3+ 39. Kf2 Rb2+ 40. Kg1 b3 41. Bf2 Rc2 42. Bd4 b2 43. Ne8+ Kh8 44. Bxb2 Rxb2 45. Nc7 Bc4 46. Re8 Kg7 47. e6 Nxe6 1/2-1/2

[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.05"]
[Round "7"]
[White "MacKenzie, Dana N"]
[Black "Li, Eric"]
[Result "1/2-1/2"]
[ECO "E03"]
[WhiteElo "2012"]
[BlackElo "2007"]
[PlyCount "72"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Nf3 a6 7. Qxc4 c5 8. dxc5 Bxc5 9. 0-0 b5 10. Qh4 Bb7 11. Nc3 0-0 12. Bf4 Be7 13. Rad1 Nd5 14. Bg5 f6 15. Qh3 f5 16. Nd4 Nc5 17. Nxe6 Nxe6 18. Bxe7 Qxe7 19. Nxd5 Qf7 20. Qh4 f4 21. Ne7+ Kh8 22. Bxb7 g5 23. Qh6 Rae8 24. Ng6+ Qxg6 25. Qxg6 hxg6 26. Bf3 Nc5 27. Rd6 Kg7 28. Rfd1 Rf6 29. Kf1 Na4 30. Rxf6 Kxf6 31. Rd6+ Re6 32. Rxe6+ Kxe6 33. Bb7 Nc5 34. Bc8+ Ke5 35. b4 Ne4 36. Bxa6 Nd6 1/2-1/2

[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.04"]
[Round "5"]
[White "MacKenzie, Dana N"]
[Black "Sarvadh, Sathiaram"]
[Result "1-0"]
[ECO "C33"]
[WhiteElo "2012"]
[BlackElo "2046"]
[PlyCount "81"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 d6 5. d4 Be6 6. Bb3 Nf6 7. Nf3 Qh6 8. Nc3 Nbd7 9. Qd3 0-0-0 10. Qb5 Nh5 11. Qg5 Bxb3 12. axb3 Ng3+ 13. Qxg3 fxg3 14. Bxh6 gxh6 15. hxg3 a6 16. Nh4 Re8 17. Nf5 Nf6 18. Rh4 h5 19. Re1 Rg8 20. Nd5 Nxd5 21. exd5 Rxe1+ 22. Kxe1 Rg5 23. Rf4 Kd7 24. Kf2 f6 25. b4 Ke8 26. c4 Kf7 27. Kf3 b6 28. Ke4 Rg4 29. Kf3 Rg5 30. Ke4 Rg6 31. Rf1 Rg4+ 32. Ke3 Kg6 33. Nh4+ Kf7 34. Nf5 h4 35. Rf4 Rg5 36. g4 h5 37. gxh5 Rxh5 38. Rf3 Kg6 39. Ke4 Kg5 40. Ra3 h3 41. Rg3# 1-0

[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.03"]
[Round "3"]
[White "MacKenzie, Dana N"]
[Black "Coleman, Teddy"]
[Result "0-1"]
[ECO "C33"]
[WhiteElo "2012"]
[BlackElo "2352"]
[PlyCount "27"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 d5 4. Bxd5 Nf6 5. Nc3 Nxd5 6. Nxd5 Bd6 7. d4 Qh4+ 8. Kf1 Be6 9. Qf3 g5 10. e5 g4 11. Qxf4 Bxd5 12. exd6 Nc6 13. dxc7 Kd7 14. Nf3 0-1

[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.03"]
[Round "4"]
[White "Somalwar, Anaiy"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "2069"]
[BlackElo "2012"]
[PlyCount "79"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e5 6. d5 Bc5 7. Be2 0-0 8. Nf3 Nbd7 9. 0-0 Re8 10. a3 Nf8 11. b4 Bb6 12. Qc2 Bd7 13. Bb5 Bxb5 14. Nxb5 c6 15. dxc6 Rc8 16. c7 Qe7 17. Qd3 Bxc7 18. Nxa7 Rcd8 19. Qe2 Ne6 20. Nb5 Bb6 21. Bg5 Nf4 22. Bxf4 exf4 23. e5 Ng4 24. Rae1 Qe6 25. h3 Nf6 26. Qc2 Nd5 27. Nd6 Re7 28. Qd2 Ne3 29. fxe3 Bxe3+ 30. Rxe3 fxe3 31. Qc2 f6 32. Nf5 Red7 33. Nxe3 Rd3 34. Nc4 b5 35. Na5 Rxa3 36. Nc6 Rdd3 37. Ncd4 Qc4 38. Qxc4+ bxc4 39. e6 Kf8 40. b5 1-0

[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.02"]
[Round "2"]
[White "Kumar, Nikhil"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "D06"]
[WhiteElo "2281"]
[BlackElo "2012"]
[PlyCount "90"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. Nf3 Bf5 5. Nbd2 Nb6 6. e4 Bg6 7. h4 Bh5 8. Nb3 N8d7 9. a4 e6 10. a5 Nc8 11. Bd3 a6 12. Qc2 Bxf3 13. gxf3 Bb4+ 14. Kf1 e5 15. f4 exd4 16. e5 Qe7 17. Nxd4 Qc5 18. e6 Qxd4 19. Be3 Qd5 20. exd7+ Qxd7 21. Bxh7 Nd6 22. Bd3 Qc6 23. Qxc6+ bxc6 24. Ke2 Rh5 25. Rhg1 Rxa5 26. Rxa5 Bxa5 27. Rxg7 Kd7 28. h5 Rh8 29. Rh7 Rxh7 30. Bxh7 Bb6 31. Bd3 Ke7 32. h6 Kf8 33. Bxa6 Nf5 34. Bxb6 cxb6 35. h7 Kg7 36. Bd3 Nd6 37. Ke3 c5 38. f5 f6 39. Kf4 Kxh7 40. Kg4 Kh6 41. f3 b5 42. Kf4 Kh5 43. b3 Kh4 44. Bf1 Kh5 45. Bd3 Kh4 1/2-1/2

[Event "Bay Area op"]
[Site "Burlingame"]
[Date "2019.01.01"]
[Round "1"]
[White "MacKenzie, Dana N"]
[Black "Bick, Gabriel James"]
[Result "0-1"]
[ECO "C33"]
[WhiteElo "2012"]
[BlackElo "2381"]
[PlyCount "68"]
[EventDate "2019.01.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 d6 5. d4 Be6 6. Bb3 Nf6 7. Nf3 Qh6 8. Nc3 Nbd7 9. Qd3 0-0-0 10. Qb5 Re8 11. Qg5 Bxb3 12. axb3 Qxg5 13. Nxg5 h6 14. Nxf7 Rh7 15. e5 dxe5 16. Nxe5 Nxe5 17. dxe5 Rxe5 18. Rxa7 Bc5 19. Ra8+ Kd7 20. Na4 Bb4 21. Kf2 g5 22. Rd1+ Bd6 23. c4 Kc6 24. Bd2 Rhe7 25. b4 b6 26. Bc3 Ng4+ 27. Kg1 Re2 28. Ra7 Ne3 29. b5+ Kd7 30. Rxd6+ Kxd6 31. Bb4+ Ke6 32. Bxe7 Rxg2+ 33. Kh1 Rc2 34. Kg1 f3 0-1

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.08"]
[Round "9"]
[White "Wang, Michael"]
[Black "MacKenzie, Dana N"]
[Result "0-1"]
[ECO "C61"]
[WhiteElo "2040"]
[BlackElo "2068"]
[PlyCount "84"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. 0-0 g6 6. c3 Bg7 7. cxd4 c6 8. Bc4 d5 9. exd5 cxd5 10. Bb5+ Kf8 11. Nc3 Ne7 12. d3 Nf5 13. Re1 Be6 14. Bf4 Nxd4 15. Qd2 h6 16. Rac1 Kg8 17. Ba4 a6 18. Ne2 Qh4 19. Nxd4 Bxd4 20. Bb3 Qf6 21. Rc7 g5 22. Be3 Be5 23. Bb6 Bxc7 24. Bxc7 Qe7 25. Be5 Rh7 26. d4 f5 27. f4 g4 28. Qa5 Qd8 29. Qxd8+ Rxd8 30. Bf6 Rd6 31. Rxe6 Rxe6 32. Bxd5 Kf7 33. Be5 b5 34. Kf2 Ke7 35. Bxe6 Kxe6 36. Kg3 Kd5 37. Kh4 Rb7 38. Kh5 Rb6 39. Bg7 Rc6 40. Bxh6 Rc2 41. Kg5 Rxg2 42. Kxf5 Rxh2 0-1

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.07"]
[Round "8"]
[White "MacKenzie, Dana N"]
[Black "Wheeler, Cameron"]
[Result "0-1"]
[ECO "C14"]
[WhiteElo "2068"]
[BlackElo "2192"]
[PlyCount "66"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. Bxf6 Bxf6 6. Nf3 0-0 7. Qd2 c5 8. e5 Be7 9. dxc5 Bxc5 10. Bd3 Nc6 11. 0-0 f6 12. exf6 Qxf6 13. Na4 Bd6 14. c4 Ne5 15. Nxe5 Qxe5 16. f4 Rxf4 17. Qxf4 Qxf4 18. Rxf4 Bxf4 19. Re1 d4 20. Be4 Rb8 21. Re2 Be3+ 22. Kh1 b5 23. cxb5 Rxb5 24. Rc2 Bb7 25. Bd3 Ra5 26. b3 Ba6 27. Bxa6 Rxa6 28. Rc8+ Kf7 29. Rc7+ Kf6 30. Rd7 Rc6 31. g3 Rc2 32. Rxa7 d3 33. Rd7 d2 0-1

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.06"]
[Round "7"]
[White "MacKenzie, Dana N"]
[Black "Studen, Damir"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "2068"]
[BlackElo "2285"]
[PlyCount "186"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. Be2 Nc6 5. b3 g6 6. Bb2 Bg7 7. 0-0 0-0 8. Ne5 Qc7 9. Nxc6 Qxc6 10. a4 a6 11. Bf3 b6 12. Qe2 Bb7 13. c4 Qd7 14. Na3 e6 15. d3 Bc6 16. Rac1 Rac8 17. g4 Rfd8 18. Rfd1 Qb7 19. Kf2 b5 20. g5 Ne8 21. axb5 axb5 22. cxd5 Bxd5 23. Bxd5 exd5 24. Bxg7 Nxg7 25. Nc2 Ne6 26. Qf3 Qb8 27. d4 c4 28. b4 Ng7 29. Ra1 Qb7 30. Ra5 Ra8 31. Rda1 Rxa5 32. bxa5 Nf5 33. a6 Qb6 34. a7 Qb7 35. Nb4 Ne7 36. f5 gxf5 37. Ra6 Ra8 38. Rh6 Ng6 39. Nxd5 Rxa7 40. Qxf5 Ra2+ 41. Kf3 Ra6 42. e4 c3 43. Nf6+ Rxf6 44. gxf6 c2 45. Qc5 Qa6 46. e5 Qa8+ 47. Kf2 Nf4 48. Ke3 Nd5+ 49. Kd2 Nf4 50. Qxc2 Qg2+ 51. Kc3 b4+ 52. Kb3 Qd5+ 53. Kxb4 Qxd4+ 54. Kb5 Qxe5+ 55. Ka6 Qe6+ 56. Kb7 Qd5+ 57. Qc6 Qb3+ 58. Kc8 Ng6 59. Rh5 Qe3 60. Rd5 Qh3+ 61. Qd7 Qc3+ 62. Qc7 Qxf6 63. Qd8+ Kg7 64. Qxf6+ Kxf6 65. Kd7 Nf8+ 66. Kd6 Ne6 67. Rh5 Kg6 68. Rh4 Ng7 69. Ke5 f6+ 70. Ke4 Ne8 71. Rg4+ Kf7 72. Kf4 Ng7 73. Rg1 Ne6+ 74. Kg4 Ng7 75. h4 h5+ 76. Kf4 Ne6+ 77. Ke4 Ng7 78. Ra1 Kg6 79. Ra5 Ne6 80. Rb5 Ng7 81. Rb4 Nf5 82. Kd5 Ne3+ 83. Ke6 Nf5 84. Rf4 Ng7+ 85. Ke7 Nf5+ 86. Kf8 Nxh4 87. Rxh4 Kg5 88. Ra4 h4 89. Ke7 h3 90. Ra2 Kg4 91. Kxf6 Kg3 92. Kg5 h2 93. Rxh2 Kxh2 1/2-1/2

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.05"]
[Round "6"]
[White "Breckenridge, Steven James"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2342"]
[BlackElo "2068"]
[PlyCount "63"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. Bb3 0-0 6. 0-0 d6 7. c3 b6 8. Re1 Bb7 9. Nbd2 Nd7 10. Nf1 Nc5 11. Bc2 Bf6 12. d4 Nd7 13. Ng3 Ne7 14. Nh5 Ng6 15. h3 h6 16. Ng3 Bg5 17. Nxg5 hxg5 18. Nf5 d5 19. exd5 Bxd5 20. dxe5 Ndxe5 21. Qh5 Re8 22. Bxg5 Bf3 23. Bxd8 Bxh5 24. Bxc7 f6 25. Be4 Rac8 26. Nd6 Rxc7 27. Nxe8 Rd7 28. g4 Nh4 29. gxh5 Nhf3+ 30. Kf1 Nxe1 31. Rxe1 Kf8 32. h6 1-0

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.05"]
[Round "5"]
[White "Evans, Bela"]
[Black "MacKenzie, Dana N"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2243"]
[BlackElo "2068"]
[PlyCount "118"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. e3 Nf6 2. b3 Nc6 3. Bb2 e5 4. c4 d6 5. d3 Be7 6. a3 0-0 7. Nd2 Ne8 8. g3 f5 9. Ne2 Bf6 10. Qc2 Ne7 11. Bg2 c6 12. 0-0 Be6 13. b4 Qd7 14. a4 Rc8 15. f4 g5 16. Nf3 g4 17. Nd2 Ng6 18. Nb3 Ng7 19. Rac1 h5 20. Rfd1 h4 21. d4 e4 22. c5 Bxb3 23. Qxb3+ d5 24. b5 Kf7 25. Rb1 Rh8 26. Bc3 hxg3 27. hxg3 Nh5 28. bxc6 bxc6 29. Ba5 Bd8 30. Qb7 Bc7 31. Qxa7 Ke6 32. Bxc7 Rxc7 33. Qb6 Ra7 34. Qb3 Rha8 35. Ra1 Ra5 36. Ra2 Qa7 37. Rda1 Rb8 38. Qc3 Ne7 39. Kf2 Ng8 40. Nc1 Ra8 41. Nb3 Ra6 42. Bf1 Qh7 43. a5 Ngf6 44. Bg2 Rh8 45. Rh1 Ra7 46. a6 Qg7 47. Raa1 Rha8 48. Bf1 Qg6 49. Na5 Rh7 50. Rg1 Nxg3 51. Rxg3 Rh2+ 52. Rg2 g3+ 53. Ke1 Rxa6 54. Bxa6 Rxg2 55. Nxc6 Qh5 56. Bf1 Rf2 57. Ra7 Ng4 58. Qa5 Rxf1+ 59. Kxf1 Nxe3+ 0-1

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.04"]
[Round "4"]
[White "MacKenzie, Dana N"]
[Black "Kaufman, Raymond"]
[Result "0-1"]
[ECO "A64"]
[WhiteElo "2068"]
[BlackElo "2301"]
[PlyCount "56"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. g3 g6 7. Bg2 Bg7 8. Nf3 0-0 9. 0-0 a6 10. a4 Re8 11. Nd2 Nbd7 12. Nc4 Ne5 13. Nxe5 Rxe5 14. Bf4 Re8 15. Qd2 Rb8 16. a5 b5 17. axb6 Rxb6 18. Ra2 Bd7 19. Rfa1 Qb8 20. Qd3 Ng4 21. Rxa6 Rxa6 22. Rxa6 Qxb2 23. Nd1 Qb4 24. Rc6 Qe1+ 25. Bf1 Nxh2 26. Kxh2 Qxf1 27. Rxd6 Bf5 28. e4 Qxd3 0-1

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.03"]
[Round "2"]
[White "MacKenzie, Dana N"]
[Black "Piasetski, Leon David"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "2068"]
[BlackElo "2289"]
[PlyCount "84"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bf4 0-0 5. e3 d5 6. Bd3 dxc4 7. Bxc4 Nd5 8. Nge2 Nxf4 9. Nxf4 c6 10. 0-0 Bd6 11. Qf3 Nd7 12. Ne4 Bc7 13. Nh5 Kh8 14. Rfd1 Qe7 15. Rac1 Nb6 16. Bb3 e5 17. Nc5 f5 18. dxe5 Bxe5 19. Nd3 Bd6 20. Rd2 Bd7 21. Rcd1 g6 22. Ndf4 Be5 23. Ng3 Rad8 24. Qe2 Bc8 25. Rxd8 Rxd8 26. Rxd8+ Qxd8 27. Nd3 Bd6 28. Qc2 Qf6 29. Ne2 Be6 30. Bxe6 Qxe6 31. Qc3+ Kg8 32. b3 Nd5 33. Qd4 b6 34. Nef4 Nxf4 35. Nxf4 Qe5 36. Qc4+ Kg7 37. g3 c5 38. Qa4 Qe7 39. Qc6 Bxf4 40. gxf4 Kh6 41. Kf1 Qg7 42. Kg2 Qb2 1/2-1/2

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.03"]
[Round "3"]
[White "Manvelyan, Hayk"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "D06"]
[WhiteElo "2282"]
[BlackElo "2068"]
[PlyCount "90"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. Nf3 Bf5 5. Nbd2 Nb6 6. e4 Bg6 7. b3 e6 8. Bb2 N8d7 9. Bd3 Be7 10. 0-0 0-0 11. Qe2 Re8 12. Rac1 Bf8 13. Rfd1 c6 14. h3 Rc8 15. Bb1 h6 16. Ne5 Nxe5 17. dxe5 Rc7 18. f4 Rd7 19. f5 Bh7 20. Nc4 Bc5+ 21. Kh1 Nxc4 22. Rxd7 Qxd7 23. Qxc4 Be3 24. Re1 Bb6 25. f6 Qd2 26. Bc3 Qg5 27. Rf1 Rd8 28. Bc2 Qe3 29. fxg7 Kxg7 30. Bb4 Qd4 31. Bd6 Qxc4 32. bxc4 Rd7 33. c5 Bd8 34. g4 Bh4 35. Kg2 b6 36. Kf3 Bg6 37. Ba4 b5 38. Bb3 Rb7 39. a4 bxa4 40. Bxa4 Bxe4+ 41. Kxe4 Rb4+ 42. Kf3 Rxa4 43. Rb1 Ra3+ 44. Kg2 Ra2+ 45. Kf3 Ra3+ 1/2-1/2

[Event "Bay Area op"]
[Site "Santa Clara"]
[Date "2014.01.02"]
[Round "1"]
[White "Bryant, John Daniel"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2410"]
[BlackElo "2068"]
[PlyCount "75"]
[EventDate "2014.01.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 158 Extra"]
[Source "ChessBase"]
[SourceDate "2014.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2014.02.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. Bb3 0-0 6. 0-0 d6 7. c3 Bg4 8. Re1 Qd7 9. Nbd2 Kh8 10. Nf1 Ng8 11. Ng3 h5 12. h3 h4 13. hxg4 hxg3 14. g5 Qg4 15. fxg3 d5 16. exd5 Bc5+ 17. Be3 Bxe3+ 18. Rxe3 Nce7 19. Re4 Qxg3 20. Rh4+ Nh6 21. Qe1 Qxe1+ 22. Rxe1 Nef5 23. Rh3 f6 24. gxh6 g5 25. g4 Nd6 26. Nd2 f5 27. Rxe5 fxg4 28. Rg3 Rf4 29. Rxg5 Re8 30. R5xg4 Re1+ 31. Kh2 Rf2+ 32. Rg2 Rf6 33. Ne4 Rxh6+ 34. Kg3 Nf5+ 35. Kf4 Ne7 36. d6 Rf1+ 37. Ke3 Nf5+ 38. Ke2 1-0

[Event "USA-ch Qualifier"]
[Site "Tulsa"]
[Date "2008.03.29"]
[Round "3"]
[White "MacKenzie, Dana N"]
[Black "Berger, Jacob V"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2117"]
[BlackElo "1981"]
[PlyCount "191"]
[EventDate "2008.03.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 c5 2. f4 e6 3. Nf3 d5 4. Ne5 Nf6 5. Bb5+ Bd7 6. Nxd7 Nbxd7 7. e5 a6 8. Be2 Ne4 9. Bf3 Qh4+ 10. g3 Nxg3 11. hxg3 Qxg3+ 12. Ke2 Qxf4 13. d4 Qxd4 14. Qxd4 cxd4 15. Bf4 Rc8 16. Kd3 f6 17. Bh5+ Kd8 18. Re1 Bb4 19. Re2 Rf8 20. exf6 gxf6 21. c3 dxc3 22. bxc3 Be7 23. Nd2 e5 24. Bh2 Nb6 25. Rd1 Na4 26. Nb1 Rc4 27. Rf1 Rh4 28. Rf5 Nc5+ 29. Kc2 Ne4 30. Bf3 Nd6 31. Rh5 Rxh5 32. Bxh5 Rg8 33. Nd2 Kd7 34. Bf3 e4 35. Bg2 f5 36. Nb3 Rf8 37. Bh3 Kc7 38. Nd4 Kb6 39. Bxd6 Bxd6 40. Bxf5 h5 41. Be6 Kc5 42. Nb3+ Kc6 43. Rd2 e3 44. Bxd5+ Kc7 45. Re2 Rf2 46. Kd3 Bg3 47. Kxe3 Rxe2+ 48. Kxe2 b6 49. c4 Bd6 50. Nd4 Ba3 51. Kd3 Kd6 52. Bb7 Ke5 53. Bxa6 Kf4 54. Bb7 h4 55. Ne2+ Kg4 56. Bc8+ Kf3 57. Ng1+ Kg3 58. Nh3 Bc5 59. Ke4 Bb4 60. a4 Bc5 61. Kd5 Be3 62. Kc6 Kg2 63. Kb5 Kh2 64. a5 bxa5 65. Kxa5 Kg3 66. Kb5 Kf3 67. c5 Bxc5 68. Kxc5 Ke4 69. Kc4 Ke5 70. Kd3 Kd5 71. Ke3 Ke5 72. Kf3 Kd4 73. Nf4 h3 74. Bxh3 Ke5 75. Ke3 Kd6 76. Kd4 Ke7 77. Ke5 Kf7 78. Bf5 Kg7 79. Ke6 Kf8 80. Kf6 Kg8 81. Ne6 Kh8 82. Ng5 Kg8 83. Nf7 Kf8 84. Bh7 Ke8 85. Ne5 Kd8 86. Be4 Kc7 87. Nc4 Kd7 88. Kf7 Kc8 89. Ke7 Kb8 90. Kd7 Ka7 91. Kc7 Ka6 92. Bc6 Ka7 93. Bb5 Ka8 94. Nb6+ Ka7 95. Nc8+ Ka8 96. Bc6# 1-0

[Event "CalChess Masters op"]
[Site "San Francisco"]
[Date "2007.09.30"]
[Round "4"]
[White "Hanken, Jerome B"]
[Black "MacKenzie, Dana N"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2200"]
[BlackElo "2156"]
[PlyCount "54"]
[EventDate "2007.09.29"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. Nc3 Nc6 5. e3 Be7 6. Nge2 0-0 7. 0-0 d6 8. d3 Qe8 9. Nd5 Nxd5 10. cxd5 Nd8 11. Qc2 c5 12. dxc6 bxc6 13. b4 Rb8 14. Rb1 Be6 15. a4 g5 16. f4 Bf6 17. Ba3 Rf7 18. b5 cxb5 19. Bxd6 Rc8 20. Qd1 exf4 21. exf4 bxa4 22. fxg5 Bxg5 23. Bf4 Bf6 24. d4 Bb3 25. Rxb3 axb3 26. Qxb3 Qxe2 27. Bd5 Bxd4+ 0-1

[Event "CalChess Masters op"]
[Site "San Francisco"]
[Date "2007.09.29"]
[Round "2"]
[White "MacKenzie, Dana N"]
[Black "Von Krogh, Christopher"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2156"]
[BlackElo "2243"]
[PlyCount "60"]
[EventDate "2007.09.29"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bd7 5. Nc3 Qc8 6. Be2 Na6 7. Be3 b5 8. f4 h5 9. gxh5 Nh6 10. Bf3 Bg4 11. h3 Bxf3 12. Qxf3 Nf5 13. Nge2 e6 14. Rg1 Nxe3 15. Qxe3 Rxh5 16. Qf3 Rh8 17. 0-0-0 g6 18. Kb1 Nc7 19. f5 exf5 20. Nf4 Ne6 21. Nfxd5 cxd5 22. Nxd5 Be7 23. Nxe7 Kxe7 24. d5 Nc5 25. e6 Ne4 26. exf7 Kxf7 27. d6 Qc5 28. Qb3+ Kf6 29. Rg2 Rad8 30. Rdg1 Nd2+ 0-1

[Event "CalChess Masters op"]
[Site "San Francisco"]
[Date "2007.09.29"]
[Round "1"]
[White "Schwarz, Daniel W"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2250"]
[BlackElo "2156"]
[PlyCount "101"]
[EventDate "2007.09.29"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. Nc3 c5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 cxd4 7. cxd4 e5 8. Nf3 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 exd4 11. Nxd4 0-0 12. Bc4 Nd7 13. 0-0 Nb6 14. Bb3 Bg4 15. f3 Bd7 16. Rfd1 Qe7 17. Qa5 Rfc8 18. Rac1 Rxc1 19. Rxc1 Qd6 20. Rd1 Qf4 21. Nc2 h6 22. Qh5 Rf8 23. Kf2 Qg5 24. Qxg5 hxg5 25. Rd6 Rc8 26. Ne3 Ba4 27. Rxb6 axb6 28. Bxa4 Kf8 29. Bb3 b5 30. Nf5 Rd8 31. Bd5 g6 32. Nd4 Ke7 33. Nxb5 Rc8 34. Nd4 Ra8 35. Ke3 Ra3+ 36. Bb3 Ra8 37. h3 Rc8 38. Bd5 Ra8 39. Nb5 Ra5 40. Nc3 Rc5 41. Kd4 Rc7 42. Bb3 Rd7+ 43. Nd5+ Kd6 44. e5+ Kc6 45. Ke4 Kc5 46. g4 b5 47. Nf6 Re7 48. Ng8 Rd7 49. Nh6 f6 50. exf6 Kd6 51. Nf7+ 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "2007.06.10"]
[Round "5"]
[White "MacKenzie, Dana N"]
[Black "Yanayt, Eugene"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "2132"]
[BlackElo "2332"]
[PlyCount "78"]
[EventDate "2007.06.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. d3 g6 4. c3 Bg7 5. Be3 d6 6. Nd2 Nf6 7. Be2 0-0 8. g4 Rb8 9. g5 Ne8 10. Ngf3 e5 11. fxe5 Nxe5 12. Nxe5 Bxe5 13. d4 cxd4 14. cxd4 Bg7 15. h4 Qe7 16. Qb3 b5 17. h5 Be6 18. d5 Bc8 19. 0-0-0 a5 20. Rh4 a4 21. Qb4 Nc7 22. Nf3 Bb7 23. Qd2 Bxd5 24. exd5 Rfe8 25. Bd4 Qxe2 26. Bxg7 Qxd2+ 27. Rxd2 Kxg7 28. Nd4 Re1+ 29. Kc2 Rc8 30. Rdh2 Ne6+ 31. Kd2 Nxd4 32. h6+ Kf8 33. Kxe1 Nf3+ 34. Kd1 Nxh4 35. Rxh4 Rc5 36. Rd4 f6 37. gxf6 Kf7 38. Kd2 Kxf6 39. Kd3 Kg5 0-1

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "2007.06.08"]
[Round "1"]
[White "Simutowe, Amon"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "2419"]
[BlackElo "2132"]
[PlyCount "69"]
[EventDate "2007.06.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. e4 Nf6 5. f3 c6 6. Nc3 Qc7 7. f4 Bg4 8. Qc2 Na6 9. h3 Bd7 10. a3 c5 11. d5 c4 12. Nf3 Nh5 13. Ne5 Ng3 14. Nxd7 Qxd7 15. Bxc4 Rc8 16. Qd3 Rxc4 17. Qxg3 Nc5 18. Qf3 g6 19. 0-0 Bg7 20. e5 0-0 21. Be3 Rc8 22. Rad1 Na4 23. Nxa4 Qxa4 24. h4 a5 25. h5 Qb3 26. hxg6 hxg6 27. Bd4 Qxf3 28. Rxf3 Rc2 29. Rb3 Re2 30. Bc3 Rc4 31. g3 g5 32. d6 exd6 33. exd6 Bxc3 34. Rxc3 Rxc3 35. d7 1-0

[Event "Western States op"]
[Site "Reno"]
[Date "2006.10.08"]
[Round "5"]
[White "Anderson, Renard"]
[Black "MacKenzie, Dana N"]
[Result "0-1"]
[ECO "C61"]
[WhiteElo "2237"]
[BlackElo "2114"]
[PlyCount "96"]
[EventDate "2006.10.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. 0-0 g6 6. d3 Bg7 7. Nd2 Ne7 8. Nf3 c6 9. Bc4 d5 10. Bb3 0-0 11. h3 h6 12. Bf4 Be6 13. Be5 c5 14. Bxg7 Kxg7 15. exd5 Nxd5 16. Nd2 Qd7 17. Ne4 Rac8 18. Qf3 f5 19. Nd2 Rce8 20. Rfe1 Bg8 21. a4 Nb4 22. Rxe8 Rxe8 23. Bxg8 Kxg8 24. Qd1 Qe6 25. Kf1 g5 26. Rc1 Nd5 27. Nc4 b6 28. Qf3 Kg7 29. Kg1 Re7 30. g3 Kg6 31. Nd2 h5 32. Qg2 g4 33. h4 Nb4 34. Qa8 Nc6 35. Nc4 Kg7 36. Kf1 Qd5 37. Kg1 Qd7 38. Kf1 Re8 39. Qxe8 Qxe8 40. Re1 Qd7 41. Kg1 Nb4 42. Re2 Qxa4 43. b3 Qa1+ 44. Kg2 f4 45. gxf4 Nd5 46. Re4 Qd1 47. Nd6 Qf3+ 48. Kg1 Nxf4 0-1

[Event "Western States op"]
[Site "Reno"]
[Date "2006.10.08"]
[Round "6"]
[White "MacKenzie, Dana N"]
[Black "Pruess, David"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2114"]
[BlackElo "2461"]
[PlyCount "91"]
[EventDate "2006.10.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. f4 d5 3. Nf3 dxe4 4. Ng5 Nf6 5. Bc4 Bg4 6. Qxg4 Nxg4 7. Bxf7+ Kd7 8. Be6+ Kc6 9. Bxg4 e6 10. Nc3 Na6 11. a3 Bd6 12. 0-0 Nc7 13. Ncxe4 Qe7 14. Nxd6 Qxd6 15. d3 Raf8 16. Bf3+ Kd7 17. c3 Nd5 18. g3 h6 19. Ne4 Qc7 20. b4 cxb4 21. axb4 b6 22. Bd2 Rf7 23. c4 Nf6 24. Bc3 Ke7 25. Be5 Qd7 26. Nd6 Rd8 27. Nxf7 Kxf7 28. d4 Kg6 29. g4 Rc8 30. c5 Qb5 31. Rxa7 Qd3 32. h4 h5 33. g5 Ne8 34. Kg2 b5 35. Re1 Kf5 36. Be4+ Qxe4+ 37. Rxe4 Kxe4 38. Ra5 Nc7 39. Bxg7 Kxf4 40. Be5+ Kg4 41. g6 Kxh4 42. g7 Rg8 43. Ra7 Nd5 44. Rf7 Ne3+ 45. Kf3 Ng4 46. c6 1-0

[Event "Western States op"]
[Site "Reno"]
[Date "2006.10.07"]
[Round "3"]
[White "Langer, Mikhail"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2344"]
[BlackElo "2114"]
[PlyCount "69"]
[EventDate "2006.10.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. Nd2 f6 10. Qe4 Nb6 11. exf6 Qxe4+ 12. Nxe4 gxf6 13. b3 d5 14. Nxf6+ Kf7 15. Ng4 Re8+ 16. Kd1 h5 17. Ne3 Bg7 18. Rb1 Rd8 19. Kc2 Bc8 20. Bd3 a5 21. Bd2 a4 22. Rbe1 axb3+ 23. axb3 Be6 24. Nf5 Bxf5 25. Bxf5 Ra8 26. c5 Ra2+ 27. Kd3 Nc4 28. bxc4 dxc4+ 29. Ke3 Rd8 30. Rd1 Bd4+ 31. Kf3 Rb8 32. Be3 Bxe3 33. Kxe3 Rb3+ 34. Kd4 Rxf2 35. Rhf1 1-0

[Event "Western States op"]
[Site "Reno"]
[Date "2006.10.07"]
[Round "4"]
[White "MacKenzie, Dana N"]
[Black "Mathis, Tony"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "2114"]
[BlackElo "814"]
[PlyCount "65"]
[EventDate "2006.10.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c3 Bg7 6. Be3 Nf6 7. Nd2 e5 8. Nb5 0-0 9. Nd6 b6 10. Be2 Qc7 11. N2c4 Ba6 12. f3 Ne8 13. Nxe8 Raxe8 14. Nd6 Bxe2 15. Nxe8 Rxe8 16. Qxe2 d6 17. 0-0 Rd8 18. Rfd1 Ne7 19. Qb5 Qd7 20. Qxd7 Rxd7 21. Rd3 d5 22. Rad1 d4 23. cxd4 exd4 24. Bxd4 Bxd4+ 25. Rxd4 Rxd4 26. Rxd4 Nc6 27. Rd7 b5 28. Rc7 Nd4 29. Rxa7 Kg7 30. Kf2 Kf6 31. Rd7 Ne6 32. Ke3 h5 33. Rb7 1-0

[Event "Western States op"]
[Site "Reno"]
[Date "2006.10.06"]
[Round "2"]
[White "MacKenzie, Dana N"]
[Black "Harrison, Drayton"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2114"]
[BlackElo "1797"]
[PlyCount "23"]
[EventDate "2006.10.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. f4 d5 3. Nf3 dxe4 4. Ng5 Nf6 5. Bc4 Bg4 6. Qxg4 Nxg4 7. Bxf7+ Kd7 8. Be6+ Kc6 9. Bxg4 e5 10. Nf7 Qh4+ 11. g3 Qxg4 12. Nxe5+ 1-0

[Event "Western States op"]
[Site "Reno"]
[Date "2006.10.06"]
[Round "1"]
[White "Sevillano, Enrico"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "C61"]
[WhiteElo "2548"]
[BlackElo "2114"]
[PlyCount "77"]
[EventDate "2006.10.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. 0-0 g6 6. c3 Bg7 7. cxd4 c6 8. Bc4 Bxd4 9. d3 b5 10. Bb3 a5 11. a4 b4 12. e5 d5 13. exd6 Qxd6 14. Nd2 Be6 15. Bxe6 fxe6 16. Nc4 Qd5 17. Be3 0-0-0 18. Bxd4 Qxd4 19. Qe2 Ne7 20. Qxe6+ Rd7 21. Ne5 Rhd8 22. Nxd7 Rxd7 23. b3 Kb7 24. Rad1 Nf5 25. Rfe1 Qg7 26. Re4 Nd4 27. Qc4 g5 28. Qc5 Nxb3 29. Rxb4+ axb4 30. Qxb4+ Ka7 31. Qxb3 Rb7 32. Qc4 Qf6 33. Qc5+ Kb8 34. Re1 Qe6 35. Kf1 Qd7 36. d4 g4 37. g3 h5 38. a5 Qf7 39. Qxc6 1-0

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2006.04.09"]
[Round "5"]
[White "MacKenzie, Dana N"]
[Black "Trivett, John"]
[Result "1-0"]
[ECO "C33"]
[WhiteElo "2109"]
[BlackElo "1819"]
[PlyCount "47"]
[EventDate "2006.04.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 Qh4+ 4. Kf1 b5 5. Bxb5 Nf6 6. Qe2 Nh5 7. d4 Ng3+ 8. hxg3 Qxh1 9. Bxf4 Nc6 10. Bxc6 dxc6 11. Nc3 Be7 12. Re1 a5 13. Kf2 Ba6 14. Qf3 0-0 15. Nh3 Qh2 16. Qh5 g6 17. Qd1 g5 18. Rh1 gxf4 19. Rxh2 fxg3+ 20. Kxg3 Kh8 21. Ng5 Bxg5 22. Qh5 h6 23. Qxg5 Rg8 24. Rxh6# 1-0

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2006.04.09"]
[Round "6"]
[White "Schwarz, Daniel W"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2200"]
[BlackElo "2109"]
[PlyCount "79"]
[EventDate "2006.04.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. b3 f6 10. Bb2 Nf4 11. Qe3 fxe5 12. Qxe5 Qxe5+ 13. Bxe5 Bb4+ 14. Nd2 0-0 15. Kd1 Rae8 16. Bd4 c5 17. Be3 Bc3 18. Rc1 Bd4 19. Bxf4 Rxf4 20. f3 Be3 21. Kc2 Bxd2 22. Kxd2 d5 23. Bd3 Rd8 24. Ke2 d4 25. Rce1 Bb7 26. Kd2 a5 27. a4 Rf6 28. Re5 Rb6 29. Bc2 d3 30. Bd1 Rg6 31. g3 Rf6 32. Rf1 Rdf8 33. f4 Rf5 34. Rfe1 Bc8 35. Bf3 g5 36. Bd5+ Kh8 37. Rxf5 Bxf5 38. Be4 gxf4 39. gxf4 Re8 40. Bxf5 1-0

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2006.04.08"]
[Round "3"]
[White "Chock, David"]
[Black "MacKenzie, Dana N"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2010"]
[BlackElo "2109"]
[PlyCount "68"]
[EventDate "2006.04.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. b3 f6 10. Ba3 Nb4 11. Bb2 fxe5 12. a3 Nd5 13. Qh5+ g6 14. Qxe5 Nf6 15. Be2 Qxe5 16. Bxe5 Bg7 17. Ra2 0-0-0 18. 0-0 Rhe8 19. Bd4 Kb8 20. Nc3 Nh5 21. Rd2 Bxd4 22. Rxd4 c5 23. Rd2 Nf4 24. Bf3 Bb7 25. Bxb7 Kxb7 26. Rfd1 d6 27. b4 Re5 28. Rb2 Rde8 29. f3 Re1+ 30. Kf2 Rxd1 31. Nxd1 Nd3+ 32. Kg3 Nxb2 33. Nxb2 Re2 34. Nd3 Rc2 0-1

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2006.04.08"]
[Round "4"]
[White "MacKenzie, Dana N"]
[Black "Margulis, Igor"]
[Result "0-1"]
[ECO "C30"]
[WhiteElo "2109"]
[BlackElo "2228"]
[PlyCount "57"]
[EventDate "2006.04.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. f4 Nc6 3. Bc4 Nf6 4. Nc3 Bc5 5. Nf3 d6 6. d3 Bg4 7. f5 Nd4 8. Bg5 c6 9. h3 Bxf3 10. gxf3 b5 11. Bb3 a5 12. a4 b4 13. Nb1 Nxb3 14. cxb3 Qb6 15. Nd2 Bf2+ 16. Kf1 Nh5 17. Nc4 Qd4 18. Nxd6+ Kf8 19. Qc2 Be3 20. f6 Bxg5 21. Nf5 Qb6 22. fxg7+ Nxg7 23. Nxg7 Kxg7 24. Rg1 Kf6 25. d4 Qa6+ 26. Kg2 exd4 27. e5+ Ke6 28. Kh1 Rhg8 29. Qe4 0-1

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2006.04.07"]
[Round "2"]
[White "MacKenzie, Dana N"]
[Black "Small, Gregg"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "2109"]
[BlackElo "2266"]
[PlyCount "71"]
[EventDate "2006.04.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. f4 e6 3. d3 d5 4. Nf3 Nf6 5. e5 Nfd7 6. Be2 Nc6 7. 0-0 Be7 8. c4 d4 9. Nbd2 0-0 10. Ne4 Qc7 11. Nfg5 h6 12. Nh3 f6 13. exf6 Nxf6 14. Bf3 Bd7 15. Bd2 e5 16. fxe5 Nxe5 17. Nxf6+ Rxf6 18. Bd5+ Kh8 19. Rxf6 Bxf6 20. Bf4 Bc6 21. Bxc6 Qxc6 22. Qd2 Ng4 23. Nf2 Ne3 24. Ne4 Nxc4 25. Qc1 Ne3 26. Qxc5 Qxc5 27. Nxc5 b6 28. Nb3 Nc2 29. Rd1 Re8 30. Kf2 Nb4 31. a3 Nd5 32. Bd2 a5 33. a4 Ne3 34. Re1 Rf8 35. Kg1 Nc2 36. Re4 0-1

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2006.04.07"]
[Round "1"]
[White "Serper, Grigory"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "D06"]
[WhiteElo "2571"]
[BlackElo "2109"]
[PlyCount "88"]
[EventDate "2006.04.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. Nf3 Bf5 5. Nbd2 Bg6 6. Ne5 e6 7. e4 Nb6 8. Nxg6 hxg6 9. Nf3 N8d7 10. Bd3 Bb4+ 11. Bd2 Qe7 12. Rc1 Rc8 13. 0-0 Bxd2 14. Qxd2 0-0 15. Qa5 c5 16. Qxa7 cxd4 17. Rxc8 Rxc8 18. Bb5 e5 19. Bxd7 Nxd7 20. Qxb7 Rb8 21. Qc7 Rxb2 22. a4 d3 23. Qc3 Ra2 24. Qxd3 Rxa4 25. Rc1 Qc5 26. Qd1 Rc4 27. Rxc4 Qxc4 28. h4 Qc7 29. Qd5 Kf8 30. g3 Nf6 31. Qa8+ Ke7 32. Ng5 Ne8 33. Qd5 Kf8 34. Kg2 Nf6 35. Qa8+ Ne8 36. Qa3+ Qd6 37. Qb3 Qc7 38. Qa3+ Qd6 39. Qa2 Qc7 40. Qa8 Ke7 41. Qa3+ Nd6 42. Qa2 Qc4 43. Qa7+ Ke8 44. Qb6 Ke7 1/2-1/2

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "2004.06.20"]
[Round "6"]
[White "Faulks, Nick"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "C28"]
[WhiteElo "2051"]
[BlackElo "2175"]
[PlyCount "59"]
[EventDate "2004.06.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. d3 Bb4 5. Bg5 h6 6. Bxf6 Bxc3+ 7. bxc3 Qxf6 8. Ne2 d6 9. 0-0 g5 10. Qb1 0-0 11. a4 Rb8 12. a5 Be6 13. Qb3 Nd8 14. Qa4 c6 15. Bb3 Bxb3 16. cxb3 Ne6 17. Qa2 Qg6 18. Qd2 f5 19. exf5 Qxf5 20. d4 exd4 21. Nxd4 Qd5 22. Rad1 Nf4 23. Nf3 Qxb3 24. Qxd6 Rbd8 25. Qxd8 Rxd8 26. Rxd8+ Kf7 27. Re1 Qxc3 28. Rd7+ Kf6 29. Rd6+ Kf7 30. Rd7+ 1/2-1/2

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "2004.06.20"]
[Round "5"]
[White "MacKenzie, Dana N"]
[Black "Johnson, Andrew"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2175"]
[BlackElo "2201"]
[PlyCount "57"]
[EventDate "2004.06.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 g6 4. Nf3 e6 5. Bg5 Qc8 6. Qe2 Bg7 7. Na3 d6 8. 0-0-0 Nd7 9. Nc4 f6 10. Bd2 e5 11. h4 exd4 12. h5 Ne5 13. hxg6 hxg6 14. Rxh8 Bxh8 15. Rh1 Bg7 16. Rh7 Qd7 17. Nxd4 Nxd3+ 18. Qxd3 0-0-0 19. Qh3 Qxh3 20. gxh3 Bf8 21. Ne6 Re8 22. Rxc7+ Kb8 23. Rf7 Be7 24. Bf4 g5 25. Nxd6 Rc8 26. Nxc8+ Kxc8 27. Be3 Bxe4 28. Rg7 Kd7 29. Nxg5 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "2004.06.19"]
[Round "4"]
[White "Jungman, Gerard J"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2010"]
[BlackElo "2175"]
[PlyCount "61"]
[EventDate "2004.06.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Bg5 h6 5. Bxf6 Qxf6 6. e3 Nd7 7. Nc3 dxc4 8. Bxc4 Bd6 9. 0-0 0-0 10. Rc1 e5 11. Ne4 Qe7 12. dxe5 Bxe5 13. Qc2 Nf6 14. Nxe5 Qxe5 15. Nxf6+ Qxf6 16. Rfd1 Re8 17. Rd4 Bf5 18. Qb3 Rad8 19. Rcd1 Rxd4 20. Rxd4 Be6 21. h3 Bxc4 22. Qxc4 Rd8 23. Qxc7 Rxd4 24. exd4 Qxd4 25. Qxb7 f5 26. Qc8+ Kf7 27. Qxf5+ Ke7 28. Qc2 Kd6 29. Kh2 g5 30. Qc3 Qxf2 31. Qg3+ 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "2004.06.19"]
[Round "3"]
[White "MacKenzie, Dana N"]
[Black "Milat, Marcel Victor"]
[Result "0-1"]
[ECO "B04"]
[WhiteElo "2175"]
[BlackElo "2302"]
[PlyCount "110"]
[EventDate "2004.06.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 Nd7 6. Nxd7 Bxd7 7. c4 Nb6 8. Be3 e5 9. Nc3 Bb4 10. Qb3 exd4 11. Qxb4 dxe3 12. 0-0-0 Qg5 13. h4 Qh6 14. Re1 0-0-0 15. Rxe3 Rhe8 16. Qc5 f6 17. Nd5 Nxd5 18. cxd5 Rxe3 19. Qxe3 Qxe3+ 20. fxe3 Bf5 21. Bc4 Be4 22. Rd1 Kd7 23. Rd4 f5 24. g3 Kd6 25. Kd2 Ke5 26. Kc3 Bxd5 27. Bxd5 Rxd5 28. Rf4 h5 29. Kc2 Rd6 30. a4 Rg6 31. Rf3 Rg4 32. b3 a5 33. Kd3 g6 34. Ke2 c6 35. Kd3 b6 36. Kd2 Ke4 37. Ke2 c5 38. Kf2 Kd3 39. e4+ Kxe4 40. Re3+ Kd4 41. Re6 f4 42. gxf4 Rxf4+ 43. Kg3 Rg4+ 44. Kh3 c4 45. bxc4 Kxc4 46. Re5 Kb4 47. Rb5+ Kxa4 48. Rxb6 Rc4 49. Rxg6 Rc3+ 50. Kg2 Rc5 51. Rb6 Rb5 52. Rg6 Kb4 53. Ra6 a4 54. Kf2 a3 55. Ke2 Ra5 0-1

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "2004.06.18"]
[Round "1"]
[White "Khachiyan, Melikset"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "C61"]
[WhiteElo "2468"]
[BlackElo "2175"]
[PlyCount "55"]
[EventDate "2004.06.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. Bc4 g6 6. c3 Bg7 7. cxd4 Bxd4 8. 0-0 Ne7 9. Nc3 0-0 10. d3 Nc6 11. Bh6 Bg7 12. Bxg7 Kxg7 13. d4 d6 14. f4 f5 15. d5 Na5 16. Qd4+ Kg8 17. Be2 Qe7 18. e5 dxe5 19. fxe5 Rd8 20. d6 Qf7 21. Ne4 Nc6 22. Qc3 h6 23. Bc4 Be6 24. dxc7 Rd4 25. Bxe6 Qxe6 26. Nd6 Rxd6 27. exd6 Qxd6 28. Qb3+ 1-0

[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "2004.06.18"]
[Round "2"]
[White "MacKenzie, Dana N"]
[Black "Sobel, Simone L"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2175"]
[PlyCount "29"]
[EventDate "2004.06.18"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 5. d4 c5 6. Bg5 Qb6 7. Qd2 cxd4 8. Nxd4 Nxe5 9. Na4 Qb4 10. c3 Qd6 11. Nb5 Qd7 12. 0-0-0 a6 13. Nb6 Qc6 14. Nxa8 axb5 15. Bxb5 1-0

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2004.04.11"]
[Round "5"]
[White "MacKenzie, Dana N"]
[Black "Tate, Emory"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2126"]
[BlackElo "2376"]
[PlyCount "65"]
[EventDate "2004.04.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. f4 e6 3. Nf3 Qc7 4. g3 d5 5. d3 Nf6 6. Nbd2 b6 7. Bg2 dxe4 8. Nxe4 Nxe4 9. dxe4 Ba6 10. c4 Bxc4 11. Ne5 Ba6 12. Be3 Be7 13. Qc2 0-0 14. 0-0-0 b5 15. f5 c4 16. Bf4 f6 17. Ng6 e5 18. Nxf8 Kxf8 19. Be3 Nc6 20. Kb1 Nb4 21. Qc3 Qb7 22. a3 Nd3 23. b4 Qd7 24. Rd2 Bb7 25. Rhd1 Rd8 26. Bxa7 Bc6 27. Bb6 Rb8 28. Rxd3 cxd3 29. Rxd3 Qb7 30. Bc5 Bxe4 31. Bxe7+ Kxe7 32. Bxe4 Qxe4 33. Qc7+ 1-0

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2004.04.11"]
[Round "6"]
[White "Small, Gregg"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "A32"]
[WhiteElo "2311"]
[BlackElo "2126"]
[PlyCount "79"]
[EventDate "2004.04.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c5 5. e3 cxd4 6. Nxd4 Be7 7. Be2 0-0 8. cxd5 Nxd5 9. Nxd5 Qxd5 10. 0-0 Nd7 11. b3 Nf6 12. Bb2 Rd8 13. Qc2 Qc5 14. Qxc5 Bxc5 15. Rac1 Bb6 16. Bf3 Nd5 17. Rfd1 Bd7 18. Bxd5 exd5 19. Ne2 Bg4 20. Kf1 Bxe2+ 21. Kxe2 Rd7 22. Bd4 Bxd4 23. Rxd4 f5 24. Kd3 Kf7 25. Ra4 Ke6 26. Kd4 a5 27. b4 b6 28. Ra3 Raa7 29. b5 a4 30. Rc6+ Ke7 31. Rxb6 Rdc7 32. Rc3 Rxc3 33. Kxc3 Rc7+ 34. Rc6 Rxc6+ 35. bxc6 Kd6 36. Kb4 Kxc6 37. Kxa4 f4 38. exf4 Kc5 39. Kb3 Kd4 40. Kc2 1-0

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2004.04.10"]
[Round "3"]
[White "Aigner, Michael"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2286"]
[BlackElo "2126"]
[PlyCount "111"]
[EventDate "2004.04.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. b3 f6 10. Bb2 Nf4 11. Qe3 fxe5 12. Bxe5 Ng6 13. Bd4 Qxe3+ 14. Bxe3 0-0-0 15. Nd2 d5 16. 0-0-0 Ba3+ 17. Kc2 d4 18. Bg5 Rdf8 19. Nf3 h6 20. Bd3 hxg5 21. Bxg6 Rf6 22. Be4 c5 23. Nxg5 Rxf2+ 24. Rd2 Rf6 25. Re2 Rhf8 26. Bf3 Bb7 27. Rf1 Bxf3 28. Rxf3 Rxf3 29. Nxf3 Kd7 30. h3 Kd6 31. Nd2 c6 32. Ne4+ Kd7 33. Rf2 Rxf2+ 34. Nxf2 Ke6 35. Nd3 Kf5 36. Kd2 Ke4 37. Ke2 Bb4 38. g3 Ba3 39. Nf2+ Ke5 40. Kf3 Kf5 41. h4 Bb4 42. g4+ Kf6 43. Nd3 Ke6 44. Ke4 a5 45. Nf4+ Kf7 46. Kf5 Be1 47. h5 Bg3 48. Nd3 Bd6 49. g5 g6+ 50. hxg6+ Kg7 51. Ke6 Bb8 52. Nxc5 Kxg6 53. Kd7 Ba7 54. Nd3 Kxg5 55. Kxc6 Kf5 56. Kd5 1-0

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2004.04.10"]
[Round "4"]
[White "MacKenzie, Dana N"]
[Black "Cohen, Lawrence S"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2126"]
[BlackElo "2000"]
[PlyCount "83"]
[EventDate "2004.04.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 Ne7 4. d4 c6 5. Bd3 b6 6. 0-0 Ba6 7. Re1 Bxd3 8. Qxd3 a6 9. Ng5 h6 10. Qh3 Qd7 11. f4 Ng6 12. Nxf7 Nxf4 13. Bxf4 Kxf7 14. Na4 e5 15. Nxb6 Qxh3 16. gxh3 Ra7 17. Bxe5 Nd7 18. Nxd7 Rxd7 19. exd5 cxd5 20. Re2 Kg6 21. Bg3 Rb7 22. c3 Be7 23. Rg2 Kh7 24. Be5 Bg5 25. Re2 Re8 26. Kg2 Re6 27. Rc2 Rg6 28. Kf3 Rf7+ 29. Ke2 Bh4 30. Rh1 Rg2+ 31. Kd1 Rff2 32. Rxf2 Bxf2 33. Rf1 Be3 34. Rf7 Kg8 35. Rb7 g5 36. a4 Rd2+ 37. Ke1 Rc2 38. a5 Bc1 39. Kd1 Rxb2 40. Rg7+ Kf8 41. Kxc1 Rxh2 42. Bxh2 1-0

[Event "Reno Far West op"]
[Site "Reno"]
[Date "2004.04.09"]
[Round "1"]
[White "Serper, Grigory"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2601"]
[BlackElo "2126"]
[PlyCount "53"]
[EventDate "2004.04.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. Nc3 c5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 cxd4 7. cxd4 e5 8. Nf3 exd4 9. Qxd4 Qxd4 10. Nxd4 Bb4+ 11. Bd2 Bxd2+ 12. Kxd2 0-0 13. Rc1 Nc6 14. Nxc6 bxc6 15. Bc4 Rb8 16. Ke3 c5 17. Rb1 Bb7 18. f3 g6 19. Rb5 Bc6 20. Rxc5 Rb6 21. Rd1 Ba4 22. Rd4 Rb1 23. Ra5 Re1+ 24. Kd2 Rd1+ 25. Ke3 Rxd4 26. Kxd4 Rd8+ 27. Bd5 1-0

[Event "Western States op"]
[Site "Reno"]
[Date "2003.10.19"]
[Round "6"]
[White "MacKenzie, Dana N"]
[Black "Corbett, Tom"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2136"]
[BlackElo "1438"]
[PlyCount "141"]
[EventDate "2003.10.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 d6 2. g3 e5 3. Bg2 Nf6 4. Ne2 Nbd7 5. d4 Be7 6. 0-0 0-0 7. h3 h6 8. Be3 Re8 9. Nd2 b6 10. d5 a5 11. c4 Nc5 12. Qc2 Bd7 13. b3 Bf8 14. Nc3 g5 15. a3 Qc8 16. Kh2 Bg7 17. Ra2 Rf8 18. Ndb1 Nh7 19. g4 Nf6 20. f3 Nb7 21. Ne2 Kh8 22. Ng3 Re8 23. Nf5 Bxf5 24. gxf5 Nh5 25. Rh1 Nf4 26. Nc3 Bf6 27. Kg1 Qd8 28. Kf1 Rg8 29. Ke1 Rg7 30. Bf1 Be7 31. b4 Rh7 32. Nb5 Rg7 33. Qb3 Rh7 34. Kd1 Rg7 35. Kc1 Rg8 36. Kb1 Kg7 37. Rhh2 Kh7 38. Qc3 f6 39. Qe1 Bf8 40. Qf2 Rg7 41. h4 Rf7 42. Qg1 Kg8 43. Bxf4 exf4 44. Nd4 Rh7 45. Bd3 Kh8 46. Ne6 Qe7 47. hxg5 fxg5 48. Qd4+ Kg8 49. Rag2 Bg7 50. Nxg7 Qxg7 51. Qxg7+ Kxg7 52. f6+ Kf7 53. Rxg5 Kxf6 54. Rf5+ Ke7 55. Rxf4 Rhh8 56. Kb2 Rag8 57. Rfh4 Rg3 58. R2h3 Rg2+ 59. Kb3 Rf2 60. f4 Nd8 61. e5 dxe5 62. fxe5 Nf7 63. e6 Ng5 64. Rxh6 Nxh3 65. Rxh8 Rf3 66. Rh7+ Kd6 67. Rd7+ Ke5 68. e7 Rxd3+ 69. Ka4 Kd4 70. e8Q Kxc4 71. Qe4+ 1-0

[Event "US Open-104"]
[Site "Los Angeles"]
[Date "2003.08.11"]
[Round "8"]
[White "MacKenzie, Dana N"]
[Black "Gaede, Stuart R"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2175"]
[PlyCount "97"]
[EventDate "2003.08.03"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Be4 5. f3 Bg6 6. h4 h5 7. Ne2 hxg4 8. Nf4 Bh7 9. fxg4 e6 10. Nc3 Nd7 11. Be3 a6 12. Bg2 Qc7 13. 0-0 Ne7 14. Qe2 c5 15. Ncxd5 Nxd5 16. Nxd5 exd5 17. Bxd5 0-0-0 18. Bxf7 Be7 19. Bf4 Qb6 20. d5 c4+ 21. Be3 Qxe3+ 22. Qxe3 Bc5 23. Qxc5+ Nxc5 24. Rae1 Bg8 25. e6 Rxh4 26. e7 Rxg4+ 27. Kh2 Bxf7 28. exd8Q+ Kxd8 29. Rxf7 g5 30. d6 Rd4 31. Re5 Nd7 32. Rxg5 Rxd6 33. Rf2 Kc7 34. a4 Kc6 35. b4 b5 36. axb5+ axb5 37. Kg2 Nb6 38. Rc5+ Kb7 39. Rxb5 Rd5 40. Rf7+ Kc6 41. Ra5 Rxa5 42. bxa5 Nc8 43. a6 Kb6 44. Rf6+ Ka7 45. Kf3 Nb6 46. Ke4 Kxa6 47. Kd4 c3 48. Kxc3 Kb5 49. Rxb6+ 1-0

[Event "US Open-104"]
[Site "Los Angeles"]
[Date "2003.08.06"]
[Round "4"]
[White "MacKenzie, Dana N"]
[Black "Handoko, Edhi"]
[Result "0-1"]
[ECO "C33"]
[WhiteElo "2175"]
[BlackElo "2429"]
[PlyCount "116"]
[EventDate "2003.08.03"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 d5 4. Bxd5 Nf6 5. Nc3 Nxd5 6. Nxd5 g5 7. b3 Bg7 8. Ba3 Nc6 9. c3 Be6 10. Qe2 Qd7 11. 0-0-0 0-0-0 12. Nb4 f5 13. Nxc6 Qxc6 14. Nf3 fxe4 15. Nxg5 Bd5 16. Qg4+ Kb8 17. Qxf4 h6 18. Nf7 Rdf8 19. Bxf8 Rxf8 20. Rhf1 Rxf7 21. Qxf7 Bxf7 22. Rxf7 Qg6 23. Rdf1 a6 24. Re7 Qxg2 25. Rff7 e3 26. Rxg7 Qxd2+ 27. Kb1 Qxc3 28. Rg8+ Ka7 29. Rge8 Qe1+ 30. Kb2 Qf2+ 31. Kb1 Qg1+ 32. Kb2 Qxh2+ 33. Kb1 h5 34. Rxe3 h4 35. Re2 Qg1+ 36. Re1 Qg6+ 37. Kc1 h3 38. R8e2 Qd3 39. Re3 Qd4 40. Rxh3 Qa1+ 41. Kd2 Qxa2+ 42. Kc1 Qa1+ 43. Kd2 Qb2+ 44. Kd1 a5 45. Ree3 b5 46. Rc3 Kb7 47. Rhd3 Kb6 48. Rc2 Qe5 49. Rdc3 c5 50. Kd2 Qd4+ 51. Ke2 c4 52. bxc4 b4 53. Rd3 Qe4+ 54. Kd2 a4 55. c5+ Kc7 56. c6 b3 57. Rd7+ Kc8 58. Rc3 b2 0-1

[Event "North American op"]
[Site "Las Vegas"]
[Date "2002.12.27"]
[Round "2"]
[White "Ivanov, Igor Vasilievich"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "2433"]
[BlackElo "2116"]
[PlyCount "103"]
[EventDate "2002.12.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 092 Extra"]
[Source "ChessBase"]
[SourceDate "2003.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2003.03.07"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. Nf3 Bf5 5. Qb3 e6 6. Bg5 Bb4+ 7. Nc3 Qd6 8. Bd2 0-0 9. Rc1 Nc6 10. e3 Na5 11. Qd1 Nxc3 12. Bxc3 c5 13. Bxb4 cxb4 14. Bd3 Bxd3 15. Qxd3 Rac8 16. 0-0 f6 17. Qb5 b6 18. h3 Qd5 19. Qa6 Qb7 20. Qxb7 Nxb7 21. Rfd1 Rfd8 22. Kf1 Kf7 23. Ke2 Ke7 24. Ne1 a5 25. Nd3 g5 26. Rxc8 Rxc8 27. Rc1 Rxc1 28. Nxc1 Nd6 29. Kd3 b5 30. b3 f5 31. f3 Kd7 32. g4 Kc6 33. Ne2 h6 34. Ng3 fxg4 35. hxg4 Nf7 36. f4 gxf4 37. exf4 Kd5 38. Ne4 Kc6 39. g5 hxg5 40. fxg5 Nh8 41. Nf6 Ng6 42. Ke4 Kd6 43. Nh5 Ne7 44. Nf4 a4 45. g6 axb3 46. axb3 Ng8 47. Nd3 Nf6+ 48. Ke3 Nd5+ 49. Kf3 Ke7 50. Nf4 Nc3 51. g7 Kf7 52. Nxe6 1-0

[Event "North American op"]
[Site "Las Vegas"]
[Date "2002.12.26"]
[Round "1"]
[White "MacKenzie, Dana N"]
[Black "Baker, Bruce"]
[Result "1-0"]
[ECO "C31"]
[WhiteElo "2116"]
[BlackElo "2056"]
[PlyCount "73"]
[EventDate "2002.12.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "CBM 092 Extra"]
[Source "ChessBase"]
[SourceDate "2003.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2003.03.07"]
[SourceQuality "1"]

1. e4 e5 2. f4 d5 3. exd5 c6 4. d4 exd4 5. Qxd4 cxd5 6. Nf3 Nf6 7. Bb5+ Bd7 8. Qe3+ Be7 9. Nd4 Nc6 10. c3 0-0 11. Bxc6 bxc6 12. 0-0 c5 13. Ne2 Re8 14. f5 Bd6 15. Qd3 Qb6 16. c4 dxc4 17. Qc2 c3 18. Nbxc3 Ng4 19. Ng3 Bxg3 20. hxg3 Bc6 21. Bf4 c4+ 22. Kh1 Ne3 23. Bxe3 Rxe3 24. Qf2 Rae8 25. Rad1 Qb8 26. Kh2 h5 27. Rd4 R8e5 28. Rfd1 Qb4 29. R1d2 Qc5 30. Qf4 Re1 31. Qf2 Be8 32. Rf4 R5e3 33. Re4 Bc6 34. Rd8+ Kh7 35. Rh4 Be8 36. Rxh5+ Kg8 37. Rxe8+ 1-0

[Event "Continental op"]
[Site "Las Vegas"]
[Date "2001.07.26"]
[Round "1"]
[White "Hummel, Patrick"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "E33"]
[WhiteElo "2349"]
[BlackElo "2129"]
[PlyCount "103"]
[EventDate "2001.07.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 d6 6. Bd2 e5 7. d5 Bxc3 8. Bxc3 Ne7 9. Nd2 0-0 10. g3 c6 11. e4 Ng6 12. Bg2 b5 13. dxc6 Qb6 14. Qb3 Ba6 15. Bf1 Ng4 16. 0-0-0 bxc4 17. Qxb6 axb6 18. Nxc4 Bxc4 19. Bxc4 Nxf2 20. Rhe1 Nxd1 21. Rxd1 Rfd8 22. Rf1 Ra7 23. b4 b5 24. Bxb5 Ne7 25. Rd1 Raa8 26. c7 Rdc8 27. Rxd6 Rxc7 28. Kb2 f6 29. Rd7 Rxd7 30. Bxd7 Kf7 31. a4 Ra7 32. Bb5 Ke6 33. Bd2 Nc8 34. Be3 Rc7 35. Bc5 Nd6 36. Bd3 f5 37. exf5+ Nxf5 38. a5 Ne7 39. a6 Nc8 40. Be4 Nd6 41. Bxd6 Kxd6 42. Bb7 Rf7 43. a7 Rxb7 44. a8Q Rxb4+ 45. Kc3 Rd4 46. Qf8+ Ke6 47. Qxg7 Rd7 48. Qg4+ Kd6 49. Kd3 Ke7+ 50. Ke3 Rc7 51. Qf5 Ke8 52. g4 1-0

[Event "US Open-99"]
[Site "Kailua Kona"]
[Date "1998.08.07"]
[Round "7"]
[White "Bhat, Vinay S"]
[Black "MacKenzie, Dana N"]
[Result "0-1"]
[ECO "C61"]
[WhiteElo "2235"]
[BlackElo "2165"]
[PlyCount "120"]
[EventDate "1998.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. 0-0 g6 6. d3 Bg7 7. Bc4 d6 8. f4 Be6 9. Bb3 Qh4 10. Nd2 0-0-0 11. f5 Bxb3 12. axb3 a6 13. Nf3 Qh5 14. Bd2 Nf6 15. Ra4 d5 16. Ng5 Qxd1 17. Rxd1 Rd7 18. fxg6 hxg6 19. exd5 Nxd5 20. Nxf7 Rf8 21. Ng5 Ne3 22. Rc1 b6 23. Rxa6 Kb7 24. Ra4 Re7 25. Nf3 Ref7 26. Bxe3 dxe3 27. Re4 Bh6 28. Ne5 e2 29. Nxf7 Bxc1 30. Re7 Rxf7 31. Rxe2 Bxb2 32. g4 Rf4 33. h3 Bd4+ 34. Kg2 Kc6 35. c3 Bf6 36. d4 Kd7 37. Re3 Bh4 38. Re2 Rf8 39. d5 Re8 40. Rc2 Re3 41. b4 Bf6 42. c4 Rb3 43. c5 Rb2 44. Rxb2 Bxb2 45. Kf3 Bc3 46. Kf4 Bxb4 47. cxb6 cxb6 48. Kg5 Bc3 49. Kxg6 Kd6 50. g5 b5 51. Kf7 b4 52. g6 b3 53. g7 Bxg7 54. Kxg7 b2 55. h4 b1Q 56. h5 Qb7+ 57. Kh8 Qc8+ 58. Kh7 Qd7+ 59. Kg6 Qe8+ 60. Kh6 Qh8+ 0-1

[Event "US Open-99"]
[Site "Kailua Kona"]
[Date "1998.08.03"]
[Round "3"]
[White "Mulyar, Michael A"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "2400"]
[BlackElo "2165"]
[PlyCount "79"]
[EventDate "1998.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nc6 3. Nc3 Nd4 4. e3 Nxf3+ 5. Qxf3 Nf6 6. g3 d6 7. Bg2 Rb8 8. h3 g6 9. 0-0 Bg7 10. d4 Bd7 11. dxc5 dxc5 12. e4 Bc6 13. Bf4 Rc8 14. Rad1 Nd7 15. Qg4 h5 16. Qe2 0-0 17. e5 Bxg2 18. Kxg2 Qb6 19. e6 Qc6+ 20. Kg1 fxe6 21. Qd3 e5 22. Bg5 Nb6 23. Bxe7 Rfe8 24. Nd5 Qe6 25. Nf6+ Kf7 26. Nxe8 Rxe8 27. Bxc5 e4 28. Qd6 Nxc4 29. Qxe6+ Kxe6 30. Rfe1 Kf5 31. f3 Bxb2 32. Rd5+ Ke6 33. fxe4 Rc8 34. Bf2 Ne5 35. Re2 Rc1+ 36. Kg2 Nc4 37. Bxa7 Ra1 38. Rc5 Ne3+ 39. Rxe3 Bd4 40. Re2 1-0

[Event "Aberdeen op"]
[Site "Aberdeen"]
[Date "1998.??.??"]
[Round "1"]
[White "Arakhamia Grant, Ketevan"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2440"]
[BlackElo "2165"]
[PlyCount "61"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "SCO"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. Bd3 Nc6 7. Qe2 d6 8. N1d2 Nge7 9. 0-0 0-0 10. c4 f5 11. exf5 Nxf5 12. Ne4 Ne5 13. Bg5 Qc7 14. Rad1 d5 15. cxd5 exd5 16. Nc3 Nxd3 17. Rxd3 d4 18. Nd5 Qf7 19. Nxb6 axb6 20. Nxd4 Nxd4 21. Rxd4 Qg6 22. Bh4 Bh3 23. Bg3 Bf5 24. a3 Rac8 25. h3 Rfe8 26. Qb5 Rc5 27. Qb4 h6 28. Rd6 Qh5 29. Qxb6 Rcc8 30. Qxb7 Rb8 31. Qd5+ 1-0

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "7"]
[White "De Fotis, Gary"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "E41"]
[WhiteElo "2325"]
[PlyCount "56"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. e4 e5 9. d5 Ne7 10. Nh4 0-0 11. g3 Re8 12. 0-0 Ng6 13. Ng2 Qd7 14. Qe2 Qh3 15. Ne3 Nf4 16. gxf4 exf4 17. f3 fxe3 18. Bxe3 Nd7 19. Rf2 Ne5 20. Raf1 f5 21. Bb1 Qh4 22. Kh1 f4 23. Bd2 Bh3 24. Rg2 Bxg2+ 25. Kxg2 Rf8 26. Kh1 Rf6 27. Rg1 Qh3 28. Rf1 Raf8 1-0

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "1"]
[White "Filatov, Leonid"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "2340"]
[PlyCount "71"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 d6 6. 0-0 Nbd7 7. b3 c5 8. Bb2 Qc7 9. a3 e5 10. dxe5 dxe5 11. Bb5 0-0-0 12. Qe2 Bd6 13. Nc4 e4 14. Nxd6+ Qxd6 15. Nd2 Ne5 16. Nc4 Nxc4 17. Bxc4 Qe7 18. Rad1 h5 19. Rxd8+ Rxd8 20. Bxf6 Qxf6 21. Qxh5 g6 22. Qg4+ Kc7 23. Rd1 Bc8 24. Qg3+ Kc6 25. Rxd8 Qxd8 26. h4 Qe7 27. Qg5 Qxg5 28. hxg5 Be6 29. Bxe6 fxe6 30. Kh2 Kd5 31. Kg3 Ke5 32. Kg4 b5 33. c4 bxc4 34. bxc4 a6 35. a4 a5 36. g3 1-0

[Event "Washington Class-ch Master/Expert"]
[Site "Seattle"]
[Date "1995.??.??"]
[Round "4"]
[White "MacKenzie, Dana N"]
[Black "Bartron, Paul"]
[Result "1-0"]
[ECO "D16"]
[PlyCount "41"]
[EventDate "1995.11.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 b6 6. e3 Ba6 7. Ne5 e6 8. Qf3 Qc7 9. Bxc4 Bxc4 10. Nxc4 Nbd7 11. Nb5 Bb4+ 12. Bd2 Bxd2+ 13. Nxd2 Qb8 14. Qxc6 0-0 15. Nd6 e5 16. 0-0 exd4 17. exd4 Ne8 18. Nf5 Nef6 19. Rfe1 Kh8 20. Nd6 Ne8 21. Nxe8 1-0

[Event "Washington Class-ch Master/Expert"]
[Site "Seattle"]
[Date "1995.??.??"]
[Round "2"]
[White "MacKenzie, Dana N"]
[Black "Bustamante Montoni, Richard"]
[Result "1/2-1/2"]
[ECO "C11"]
[PlyCount "48"]
[EventDate "1995.11.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 5. d4 c5 6. Bg5 Qb6 7. Qd2 cxd4 8. Nxd4 Nc6 9. 0-0-0 Qxd4 10. Qxd4 Nxd4 11. Rxd4 Bc5 12. Rd2 a6 13. Bf4 0-0 14. Bd3 b5 15. Re1 Nb6 16. Bf1 b4 17. Nd1 Bd7 18. Be3 Rfc8 19. Bxc5 Rxc5 20. Ne3 a5 21. Rd4 Bb5 22. Bxb5 Rxb5 23. f4 Rc8 24. Red1 Rbc5 1/2-1/2

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "6"]
[White "MacKenzie, Dana N"]
[Black "Farleigh, Richard"]
[Result "0-1"]
[ECO "B06"]
[PlyCount "70"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 d6 3. Bg5 Bg7 4. Qd2 c5 5. c3 Nf6 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. f3 0-0 9. Ne2 Rc8 10. 0-0 Qb6 11. Kh1 Qa6 12. Na3 h6 13. Be3 Kh7 14. g4 b5 15. Ng3 Qb7 16. h4 b4 17. cxb4 cxb4 18. Nc2 Nb6 19. b3 a5 20. g5 hxg5 21. hxg5 Nfd7 22. Rf2 Rc3 23. Rh2+ Kg8 24. Ne2 Rc7 25. Nf4 Rfc8 26. Rf1 Rxc2 27. Qxc2 Rxc2 28. Rxc2 e5 29. dxe5 Bxe5 30. Rfc1 Nc5 31. Ng2 Qd7 32. Bxc5 Qh3+ 33. Kg1 dxc5 34. Rxc5 Bg3 35. Kf1 Qh1+ 0-1

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "4"]
[White "MacKenzie, Dana N"]
[Black "Leverett, Bruce W"]
[Result "0-1"]
[ECO "C11"]
[BlackElo "2265"]
[PlyCount "82"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 5. d4 c5 6. Bg5 Qb6 7. Qd2 cxd4 8. Nxd4 Nxe5 9. Na4 Qc7 10. Nb5 Qd7 11. 0-0-0 f6 12. Be3 Nbc6 13. f4 Ng4 14. Be2 Nxe3 15. Qxe3 Kf7 16. c4 d4 17. Qb3 Be7 18. Qc2 Qd8 19. Bf3 Bd7 20. Nxd4 Qc7 21. Nb5 Qxf4+ 22. Kb1 Nb4 23. Qe2 Bc6 24. Bxc6 Nxc6 25. Rd7 Rhd8 26. Nd6+ Kg6 27. Qd3+ f5 28. Nxb7 Ne5 29. Rxd8 Nxd3 30. Rxd3 Qxc4 31. Rg3+ Kf7 32. Nc3 Qb4 33. Rd1 Qxb7 34. Rgd3 Rb8 35. R1d2 Ke8 36. Re3 Qc6 37. Rd4 Kf7 38. Kc2 Bf6 39. Rdd3 Bxc3 40. Rxc3 Qb6 41. b3 Qa6 0-1

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "2"]
[White "MacKenzie, Dana N"]
[Black "Martinovsky, Eugene Simeon"]
[Result "0-1"]
[ECO "C30"]
[BlackElo "2305"]
[PlyCount "62"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. Nc3 Nf6 5. Bc4 Nc6 6. d3 a6 7. f5 h6 8. Bb3 Qe7 9. h3 Nd4 10. g4 c6 11. Kf1 Bd7 12. Kg2 0-0-0 13. Qe1 g6 14. fxg6 fxg6 15. Rf1 Rdf8 16. Nxd4 exd4 17. Ne2 h5 18. g5 Nxe4 19. Ng3 Rxf1 20. Nxf1 d5 21. dxe4 Rf8 22. e5 Qe6 23. Qg3 h4 24. Qd3 Qxe5 25. Bd2 Bf5 26. Re1 Bxd3 27. Rxe5 Bxf1+ 28. Kg1 Bxh3 29. Re1 Bg4 30. Kg2 d3 31. Be3 d2 0-1

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "8"]
[White "MacKenzie, Dana N"]
[Black "Ulfarsson, Magnus Orn"]
[Result "0-1"]
[ECO "B51"]
[BlackElo "2225"]
[PlyCount "89"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. 0-0 Bd7 5. Re1 a6 6. Bxc6 Bxc6 7. d4 cxd4 8. Nxd4 Nf6 9. Nc3 e6 10. Nd5 Nxd5 11. exd5 Bxd5 12. Qh5 Be7 13. Rxe6 Bxe6 14. Nxe6 g6 15. Nxd8 gxh5 16. Nxb7 Kd7 17. Na5 Rac8 18. c3 Rhg8 19. Be3 Bg5 20. f4 Bd8 21. Nb3 Rb8 22. Rd1 Bb6 23. Bxb6 Rxb6 24. Rd5 Rb5 25. Rxb5 axb5 26. Nd4 Re8 27. Kf2 b4 28. cxb4 Re4 29. Ne2 Rxb4 30. b3 Kc6 31. Ke3 Kc5 32. Kd3 h4 33. g3 hxg3 34. hxg3 h5 35. Nc3 h4 36. gxh4 Rxf4 37. h5 d5 38. a3 Rf3+ 39. Kd2 Rh3 40. b4+ Kc4 41. Ne2 Rxh5 42. Nf4 Rh4 43. Ke3 d4+ 44. Kf3 d3 45. Ke3 0-1

[Event "Washington Class-ch Master/Expert"]
[Site "Seattle"]
[Date "1995.??.??"]
[Round "5"]
[White "Roper, David C"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "C55"]
[PlyCount "88"]
[EventDate "1995.11.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 Be7 5. 0-0 0-0 6. Nc3 d6 7. h3 Na5 8. Be3 Nxc4 9. dxc4 Be6 10. Qd3 Nd7 11. b3 Kh8 12. g4 h5 13. Nh2 Bg5 14. Kg2 Bf4 15. Rh1 g5 16. Bxf4 gxf4 17. Nf3 Rg8 18. Kf1 Rg7 19. Ke1 Rh7 20. Kd2 Nc5 21. Qe2 c6 22. g5 Qd7 23. Rag1 Rg8 24. Nh4 Rgg7 25. b4 Na6 26. a3 Nc7 27. Kc1 b5 28. cxb5 Nxb5 29. Nxb5 cxb5 30. Qd3 Bc4 31. Qd2 d5 32. g6 Rh6 33. Nf5 Rhxg6 34. Nxg7 Kxg7 35. h4 Qc6 36. Qd1 dxe4 37. Qxh5 Qd6 38. Rd1 Bd3 39. Rd2 Qd4 40. Kb1 Qc3 41. Rhd1 Qb3+ 42. Kc1 Qxa3+ 43. Kb1 Qb3+ 44. Kc1 Qa3+ 1/2-1/2

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "9"]
[White "Umezinwa, George"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "E58"]
[WhiteElo "2300"]
[PlyCount "35"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 0-0 6. a3 Bxc3+ 7. bxc3 c5 8. Bd3 Nc6 9. cxd5 exd5 10. 0-0 Re8 11. Nd2 b6 12. Re1 Bb7 13. Nf1 Rc8 14. Ng3 Rc7 15. Bd2 g6 16. f3 cxd4 17. exd4 Rxe1+ 18. Qxe1 1/2-1/2

[Event "World op 23rd"]
[Site "Philadelphia"]
[Date "1995.??.??"]
[Round "5"]
[White "Whatley, Robert"]
[Black "MacKenzie, Dana N"]
[Result "0-1"]
[ECO "C61"]
[PlyCount "114"]
[EventDate "1995.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. d3 g6 6. 0-0 Bg7 7. f4 c6 8. Bc4 d5 9. exd5 cxd5 10. Qe2+ Ne7 11. Bb5+ Kf8 12. Nd2 a6 13. Ba4 h5 14. Nf3 Bg4 15. h3 Nf5 16. hxg4 hxg4 17. Ng5 Ng3 18. Qxg4 Nxf1 19. Kxf1 Qa5 20. Qe2 Qxa4 21. b3 Qe8 22. Qxe8+ Rxe8 23. Kf2 Bf6 24. Nf3 Kg7 25. Bb2 Re7 26. Bxd4 Bxd4+ 27. Nxd4 Rh4 28. Kf3 Kf6 29. Kg3 Rh8 30. a4 Rhe8 31. Kf2 g5 32. Rh1 gxf4 33. Rh3 Ke5 34. Nf3+ Kf5 35. Nd4+ Kg4 36. Rh6 Re5 37. Rd6 R8e7 38. Rd8 Re8 39. Rd6 Rh5 40. Rd7 Rb8 41. Rxf7 Rg5 42. a5 Rg6 43. Ne2 Rc8 44. c4 dxc4 45. bxc4 Rc5 46. Nxf4 Rd6 47. Nd5 Rxa5 48. Rg7+ Kf5 49. g4+ Ke5 50. Ke3 Raxd5 51. cxd5 Rxd5 52. Rg5+ Ke6 53. Rxd5 Kxd5 54. g5 Ke5 55. d4+ Kf5 56. d5 Kxg5 57. Ke4 Kf6 0-1

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "1"]
[White "Colias, Billy"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "2290"]
[PlyCount "131"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. Nbd2 c5 5. e3 b6 6. Bd3 Ba6 7. Bxa6 Nxa6 8. 0-0 0-0 9. c3 Nd5 10. Bxe7 Qxe7 11. a4 f5 12. Qe2 Nac7 13. Rfd1 cxd4 14. cxd4 d6 15. Rdc1 Rac8 16. Rc4 Qd7 17. Rac1 Ne7 18. Qd1 Ncd5 19. Qb3 Rxc4 20. Rxc4 h6 21. Ne1 g5 22. Nd3 Kg7 23. Nb1 Ng8 24. Nc3 Ngf6 25. Qb5 Rf7 26. Qc6 Nxc3 27. bxc3 Ne4 28. Qxd7 Rxd7 29. Rc8 Nf6 30. c4 Ng8 31. g3 Ne7 32. Re8 Kf7 33. Ra8 Rc7 34. Nb2 Nc8 35. Rb8 Ke7 36. a5 bxa5 37. Rb5 a4 38. Ra5 Rb7 39. Nxa4 Rb1+ 40. Kg2 Ra1 41. c5 dxc5 42. dxc5 Kd8 43. h4 Kc7 44. h5 Kc6 45. Ra6+ Kb5 46. Rxe6 Rxa4 47. Re8 Rc4 48. Rxc8 Rxc5 49. Rb8+ Kc4 50. Ra8 Rc7 51. Kf3 Kb4 52. g4 Rf7 53. gxf5 Rxf5+ 54. Kg3 a5 55. Ra6 a4 56. Rxh6 a3 57. Rd6 a2 58. Rd1 Ra5 59. Ra1 Kb3 60. Kg4 Kb2 61. Re1 a1Q 62. Rxa1 Kxa1 63. h6 Kb2 64. f4 gxf4 65. exf4 Kc3 66. h7 1/2-1/2

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "7"]
[White "Fischvogt, Eric V"]
[Black "MacKenzie, Dana N"]
[Result "0-1"]
[ECO "C64"]
[PlyCount "130"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Bc4 Bc5 5. 0-0 d6 6. c3 Nxf3+ 7. Qxf3 Qf6 8. Qe2 Ne7 9. d3 Ng6 10. Be3 Nf4 11. Bxf4 Qxf4 12. Kh1 0-0 13. Nd2 c6 14. a4 Be6 15. b4 Bb6 16. a5 Bc7 17. f3 d5 18. Ba2 Rad8 19. Rfd1 Kh8 20. Nf1 f5 21. Qe3 Qxe3 22. Nxe3 f4 23. Nc2 Bg8 24. c4 dxe4 25. dxe4 Rxd1+ 26. Rxd1 Rd8 27. Rxd8 Bxd8 28. Ne1 b6 29. Nd3 Bc7 30. axb6 axb6 31. Nc1 g5 32. Kg1 Kg7 33. Kf1 Kf6 34. Ke2 Bd6 35. b5 cxb5 36. cxb5 Bxa2 37. Nxa2 Bc5 38. Nc3 Ke6 39. Nd5 Bg1 40. g3 Kd6 41. gxf4 gxf4 42. h4 Ke6 43. h5 Bc5 44. Kf1 h6 45. Kg2 Bd4 46. Kh3 Bc5 47. Kg4 Bd4 48. Nb4 Bc5 49. Nd3 Be3 50. Ne1 Bf2 51. Nd3 Be3 52. Nb4 Bc5 53. Nd5 Bd4 54. Nc7+ Kd7 55. Kf5 Kxc7 56. Kg6 Bc5 57. Kxh6 Bf8+ 58. Kg6 Kd6 59. h6 Bxh6 60. Kxh6 Kc5 61. Kg6 Kxb5 62. Kf5 Kc4 63. Kxe5 b5 64. Kxf4 b4 65. Ke3 Kc3 0-1

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "5"]
[White "Karklins, Erik"]
[Black "MacKenzie, Dana N"]
[Result "1/2-1/2"]
[ECO "C61"]
[PlyCount "87"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. Qh5 Qe7 6. Qe2 c6 7. Bc4 g6 8. c3 Bg7 9. cxd4 Bxd4 10. Nc3 d6 11. d3 Qe5 12. Bd2 Nf6 13. h3 b5 14. Bb3 0-0 15. f4 Qc5 16. Rc1 Qb6 17. g4 Be6 18. Kf1 Bxb3 19. axb3 Rfe8 20. Kg2 c5 21. Be3 Bxe3 22. Qxe3 d5 23. Qf3 d4 24. Ne2 Rac8 25. Rc2 c4 26. Rhc1 Nxe4 27. Nxd4 Qxd4 28. dxe4 Rxe4 29. Rd1 Qe3 30. Qxe3 Rxe3 31. bxc4 Rxc4 32. Rxc4 bxc4 33. Rd8+ Kg7 34. Ra8 Re2+ 35. Kf3 Rxb2 36. Rxa7 Rb3+ 37. Ke4 Rxh3 38. Rc7 c3 39. g5 h6 40. gxh6+ Kxh6 41. Rxf7 c2 42. Rc7 Rh2 43. Kf3 Rd2 44. Kg3 1/2-1/2

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "4"]
[White "MacKenzie, Dana N"]
[Black "Cole, David"]
[Result "1/2-1/2"]
[ECO "A57"]
[PlyCount "71"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. f3 d6 6. e4 g6 7. Bd2 Bg7 8. Bc3 0-0 9. Na3 e6 10. Bc4 exd5 11. Bxd5 Nxd5 12. Bxg7 Ne3 13. Qd2 Nxg2+ 14. Qxg2 Kxg7 15. Ne2 Nd7 16. 0-0 Ne5 17. Rfd1 Qb6 18. f4 Ng4 19. Nc4 Qxb5 20. b3 h5 21. Nc3 Qb8 22. Qb2 Kh7 23. Nd5 Be6 24. Ncb6 Ra7 25. h3 Ne3 26. Nf6+ Kh6 27. Rd3 Qxb6 28. Rxe3 c4 29. Kf2 d5 30. Qe5 d4 31. Qg5+ Kg7 32. Nxh5+ Kh7 33. Nf6+ Kg7 34. Nh5+ Kh7 35. Nf6+ Kg7 36. Nh5+ 1/2-1/2

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "2"]
[White "MacKenzie, Dana N"]
[Black "Morris, Walter D"]
[Result "0-1"]
[ECO "E70"]
[BlackElo "2345"]
[PlyCount "80"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bg5 0-0 5. Qd2 d6 6. 0-0-0 Nbd7 7. e4 c5 8. Nf3 cxd4 9. Nxd4 Nc5 10. f3 Bd7 11. Bh6 Qa5 12. Bxg7 Kxg7 13. g4 Ne6 14. h4 Rac8 15. Kb1 Qc5 16. Nxe6+ fxe6 17. Be2 Bc6 18. Qd4 Qxd4 19. Rxd4 Nd7 20. Rf1 Rf4 21. Rd3 Ne5 22. Re3 Rcf8 23. Rd1 Nxf3 24. Nb5 Rxe4 25. Rxf3 Rxe2 26. Rxf8 Kxf8 27. Nxa7 Be4+ 28. Kc1 Rh2 29. b4 Rxh4 30. Rg1 g5 31. Nb5 Rh1 32. Rxh1 Bxh1 33. Nd4 Kf7 34. Kb2 e5 35. Nf5 Bf3 36. Kc3 Kf6 37. Ne3 e6 38. a4 d5 39. cxd5 exd5 40. Nf5 d4+ 0-1

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "6"]
[White "MacKenzie, Dana N"]
[Black "Wachtel, Howard"]
[Result "1-0"]
[ECO "B50"]
[PlyCount "79"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. 0-0 Bd7 5. c3 g6 6. d4 cxd4 7. cxd4 Bg7 8. Nc3 Nf6 9. d5 Nb8 10. Be2 0-0 11. Be3 Bg4 12. Qb3 b6 13. Qc2 Nbd7 14. Nd4 Bxe2 15. Qxe2 Qc8 16. Nc6 Re8 17. Rac1 Qb7 18. Nb5 Nc5 19. f3 a6 20. Nbd4 b5 21. b4 Na4 22. Na5 Qd7 23. Rc6 e6 24. dxe6 fxe6 25. Rfc1 Rec8 26. Qc2 Rxc6 27. Qxc6 Qe7 28. Qxa8+ Bf8 29. Qxa6 Qd7 30. Qxb5 Qxb5 31. Nxb5 Nb2 32. Rc8 Kf7 33. Bd4 Nd3 34. Bxf6 Nxb4 35. a3 Nd3 36. Bg5 d5 37. Rc7+ Kg8 38. Nb7 dxe4 39. fxe4 h6 40. Be3 1-0

[Event "USA Masters"]
[Site "Chicago"]
[Date "1990.??.??"]
[Round "3"]
[White "Pupols, Viktors"]
[Black "MacKenzie, Dana N"]
[Result "1-0"]
[ECO "D58"]
[WhiteElo "2210"]
[PlyCount "57"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Bg5 Be7 4. Nc3 d5 5. e3 h6 6. Bh4 0-0 7. Nf3 b6 8. cxd5 exd5 9. Bd3 Bb7 10. 0-0 Nbd7 11. Rc1 Re8 12. Bf5 g6 13. Bh3 g5 14. Bxd7 Nxd7 15. Bg3 Bd6 16. Nb5 Bxg3 17. hxg3 c5 18. Nd6 Ba6 19. Nxe8 Bxf1 20. Nd6 Qf6 21. dxc5 Nxc5 22. Qxd5 Rd8 23. Qxf7+ Qxf7 24. Nxf7 Kxf7 25. Kxf1 Kf6 26. Ke2 Rd6 27. Nd4 a5 28. g4 Ne4 29. f3 1-0

