[Event "Cesky Krumlov op 2nd"]
[Site "Cesky Krumlov"]
[Date "2008.10.15"]
[Round "6"]
[White "De Vrieze, Michael"]
[Black "Amstadt, Aron"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2026"]
[BlackElo "2196"]
[PlyCount "98"]
[EventDate "2008.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 126 Extra"]
[Source "ChessBase"]
[SourceDate "2008.11.05"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Qe7 5. Bg2 Nc6 6. Nf3 Bxd2+ 7. Nbxd2 d6 8. 0-0 a5 9. h3 0-0 10. e3 e5 11. b3 Bf5 12. a3 Bd3 13. Re1 e4 14. Nh2 d5 15. c5 b6 16. Rc1 Rfc8 17. Bf1 Bxf1 18. Ndxf1 Nd7 19. Qh5 Qe6 20. Kg2 bxc5 21. dxc5 Nde5 22. Red1 Nd3 23. Rc3 Rab8 24. Qe2 Nce5 25. f4 Nd7 26. Qc2 f5 27. g4 g6 28. Ng3 d4 29. Rc4 dxe3 30. Ne2 Nf6 31. Kg3 Nd5 32. Nd4 Qd7 33. Rxd3 exd3 34. Qxd3 Re8 35. Nhf3 c6 36. Ne5 Rxe5 37. fxe5 f4+ 38. Kf3 Rf8 39. e6 Qe7 40. Nxc6 Qxe6 41. Nxa5 Re8 42. Rc2 h5 43. c6 hxg4+ 44. hxg4 Kg7 45. c7 Nf6 46. Rg2 Nxg4 47. Rxg4 e2 48. Qc3+ Kg8 49. c8Q Qe4+ 0-1

[Event "Cesky Krumlov op 2nd"]
[Site "Cesky Krumlov"]
[Date "2008.10.14"]
[Round "5"]
[White "Korostenski, Frantisek"]
[Black "De Vrieze, Michael"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "2205"]
[BlackElo "2026"]
[PlyCount "94"]
[EventDate "2008.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 126 Extra"]
[Source "ChessBase"]
[SourceDate "2008.11.05"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.05"]
[SourceQuality "1"]

1. e4 c5 2. a3 e5 3. Nf3 d6 4. b4 b6 5. Bb5+ Bd7 6. Bc4 Be6 7. Qe2 Be7 8. Nc3 Nf6 9. Bxe6 fxe6 10. bxc5 bxc5 11. Qb5+ Nfd7 12. Qb7 Nb6 13. Rb1 N8d7 14. Nb5 Kf7 15. Nxa7 Qb8 16. Qxb8 Rhxb8 17. Nc6 Rc8 18. Nxe7 Kxe7 19. d3 c4 20. 0-0 cxd3 21. cxd3 Na4 22. Rb7 Nac5 23. Rb1 Nxd3 24. Bg5+ Kf8 25. Rb3 N3c5 26. Re3 h6 27. Bh4 Ra4 28. Nd2 Rca8 29. f3 d5 30. Bg3 d4 31. Re2 g5 32. Rc1 Nd3 33. Rc6 Ke7 34. Nc4 Rb8 35. h4 Rb1+ 36. Kh2 Rc1 37. Nb6 Rxa3 38. Rxc1 Nxc1 39. Rc2 Rc3 40. Rxc3 dxc3 41. Nxd7 Kxd7 42. hxg5 hxg5 43. Bxe5 c2 44. Bf6 g4 45. fxg4 Nd3 46. Bg5 e5 47. Kg3 Nf4 0-1

[Event "Cesky Krumlov op 2nd"]
[Site "Cesky Krumlov"]
[Date "2008.10.13"]
[Round "4"]
[White "De Vrieze, Michael"]
[Black "Krouzel, Jaroslav"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "2026"]
[BlackElo "2192"]
[PlyCount "81"]
[EventDate "2008.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 126 Extra"]
[Source "ChessBase"]
[SourceDate "2008.11.05"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.05"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 g6 3. h4 Bg7 4. c3 Nf6 5. Nd2 d5 6. Bxf6 Bxf6 7. e3 Nc6 8. f4 e5 9. dxe5 Bxh4+ 10. Ke2 Be7 11. Kf2 Be6 12. Nb3 Qd7 13. Bb5 a6 14. Bxc6 bxc6 15. Nd4 Bf7 16. Ngf3 c5 17. e6 Bxe6 18. Ne5 Qd6 19. Nxg6 cxd4 20. Nxh8 dxe3+ 21. Kxe3 0-0-0 22. Rxh7 Bf6 23. Ng6 d4+ 24. Kf2 Qb6 25. Qf3 dxc3+ 26. Kg3 Bd5 27. Qd3 cxb2 28. Qxf5+ Qe6 29. Qc2 Qc6 30. Qf5+ Kb7 31. Rf1 Be4 32. Qa5 Bxg6 33. Rh6 Bd3 34. Qb4+ Qb6 35. Qxb6+ cxb6 36. Rd1 Bc3 37. Re6 Bd2 38. Re7+ Kc6 39. Re6+ Rd6 40. Rxd6+ Kxd6 41. Rxd2 0-1

[Event "Cesky Krumlov op 2nd"]
[Site "Cesky Krumlov"]
[Date "2008.10.12"]
[Round "2"]
[White "De Vrieze, Michael"]
[Black "Baum, Bernd"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2026"]
[BlackElo "2199"]
[PlyCount "94"]
[EventDate "2008.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 126 Extra"]
[Source "ChessBase"]
[SourceDate "2008.11.05"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.05"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 e6 5. d3 a6 6. Nge2 b5 7. Bb3 Nxb3 8. axb3 Bb7 9. 0-0 Ne7 10. f4 g6 11. Be3 Qc7 12. Qe1 Bg7 13. Qg3 d5 14. exd5 exd5 15. f5 Be5 16. Bf4 Bxf4 17. Nxf4 0-0-0 18. fxg6 hxg6 19. Nh3 Qxg3 20. hxg3 Nf5 21. g4 Nh6 22. Rf6 Rd7 23. Ng5 Re8 24. Raf1 Ree7 25. R1f4 Kd8 26. Kf1 Ke8 27. Nh7 Re5 28. d4 cxd4 29. Rxd4 Rde7 30. Rd6 f5 31. Nf6+ Kf7 32. Nfxd5 Bxd5 33. Nxd5 Re1+ 34. Kf2 R7e2+ 35. Kg3 Nxg4 36. Rd7+ Kf8 37. Nf4 Re3+ 38. Kh4 Nf6 39. Nxg6+ Ke8 40. Ra7 Re4+ 41. Rxe4+ Nxe4 42. Nf4 Rf1 43. Nh3 Rc1 44. Rxa6 Rxc2 45. g4 fxg4 46. Kxg4 Rxb2 47. Re6+ Kd7 1/2-1/2

[Event "Cesky Krumlov op 2nd"]
[Site "Cesky Krumlov"]
[Date "2008.10.12"]
[Round "3"]
[White "Vink, Wim"]
[Black "De Vrieze, Michael"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2073"]
[BlackElo "2026"]
[PlyCount "60"]
[EventDate "2008.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 126 Extra"]
[Source "ChessBase"]
[SourceDate "2008.11.05"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.05"]
[SourceQuality "1"]

1. d4 c5 2. Nf3 cxd4 3. Nxd4 e6 4. e4 a6 5. c4 Qc7 6. Bd3 Nf6 7. Nc3 b6 8. 0-0 Bb7 9. Be3 h5 10. h3 Nc6 11. Nxc6 Bxc6 12. Rc1 Bc5 13. Bxc5 bxc5 14. Qe2 d6 15. f4 h4 16. Rf2 Nh5 17. Qg4 Qd8 18. Rd1 Qf6 19. e5 dxe5 20. fxe5 Qxe5 21. Qxh4 g5 22. Qg4 Nf4 23. Rdd2 0-0-0 24. Bf1 Rxd2 25. Rxd2 Qe3+ 26. Rf2 f5 27. Qd1 Qg3 28. Rxf4 Qxf4 29. Qe2 Qd4+ 30. Kh2 Qd6+ 0-1

[Event "Liberec op"]
[Site "Liberec"]
[Date "2007.11.17"]
[Round "9"]
[White "De Vrieze, Michael"]
[Black "Pennings, Jean Paul"]
[Result "1-0"]
[ECO "E80"]
[WhiteElo "2018"]
[PlyCount "67"]
[EventDate "2007.11.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 121 Extra"]
[Source "ChessBase"]
[SourceDate "2008.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2008.01.10"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. c4 d6 4. Nc3 Nd7 5. f3 c5 6. d5 Ngf6 7. Bg5 h6 8. Be3 a6 9. a4 0-0 10. Nh3 Ne5 11. Nf2 Kh7 12. Be2 Ng8 13. f4 Nd7 14. 0-0 f5 15. exf5 gxf5 16. Bd3 Rf6 17. g4 Nf8 18. Kh1 e5 19. fxe5 dxe5 20. gxf5 Bxf5 21. Nce4 Bxe4+ 22. Nxe4 Rxf1+ 23. Qxf1 Kh8 24. Bxc5 Qd7 25. Qf3 Ng6 26. a5 Nf4 27. Bc2 Rc8 28. b4 Ne7 29. Nd6 Rf8 30. Qe4 Neg6 31. Rg1 Rf6 32. Nf5 Qe8 33. Nh4 Kh7 34. Be3 1-0

[Event "Liberec op"]
[Site "Liberec"]
[Date "2007.11.16"]
[Round "8"]
[White "Huijzer, Jacques"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2045"]
[BlackElo "2018"]
[PlyCount "29"]
[EventDate "2007.11.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 121 Extra"]
[Source "ChessBase"]
[SourceDate "2008.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2008.01.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Nc3 c6 5. Bc4 b5 6. Bb3 Be7 7. d5 cxd5 8. Qxd5 Nb6 9. Qxf7+ Kd7 10. Qxg7 Nf6 11. Bg5 Rf8 12. Nxe5+ Kc7 13. Nxb5+ Kb7 14. 0-0-0 a6 15. Nxd6+ 1-0

[Event "Liberec op"]
[Site "Liberec"]
[Date "2007.11.14"]
[Round "5"]
[White "De Vrieze, Michael"]
[Black "Bjornsson, Tomas"]
[Result "1/2-1/2"]
[ECO "A57"]
[WhiteElo "2018"]
[BlackElo "2208"]
[PlyCount "48"]
[EventDate "2007.11.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6 Qxb6 6. Nc3 d6 7. a4 a5 8. e4 g6 9. Bb5+ Bd7 10. Bc4 Bg7 11. f4 Qb4 12. Qb3 0-0 13. Nf3 Rc8 14. Nd2 Be8 15. h3 Nfd7 16. Ra3 Na6 17. Qc2 Qb7 18. Nb5 Nb4 19. Qb1 Nb6 20. b3 Bd7 21. 0-0 f5 22. Bb2 fxe4 23. Bxg7 Kxg7 24. Nxe4 Bf5 1/2-1/2

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2005.12.29"]
[Round "8"]
[White "De Vrieze, Michael"]
[Black "Romijn, Bart"]
[Result "1/2-1/2"]
[ECO "A52"]
[WhiteElo "2083"]
[PlyCount "26"]
[EventDate "2005.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 110 Extra"]
[Source "ChessBase"]
[SourceDate "2006.03.10"]
[SourceVersion "2"]
[SourceVersionDate "2006.03.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. f4 Bc5 5. Nh3 Nc6 6. a3 a5 7. Qd3 d6 8. Nc3 dxe5 9. Qxd8+ Nxd8 10. Nd5 Ne6 11. e3 c6 12. f5 cxd5 13. fxe6 Bxe6 1/2-1/2

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2005.12.29"]
[Round "7"]
[White "Niesert, Loet"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "C01"]
[BlackElo "2083"]
[PlyCount "77"]
[EventDate "2005.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 110 Extra"]
[Source "ChessBase"]
[SourceDate "2006.03.10"]
[SourceVersion "2"]
[SourceVersionDate "2006.03.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. c3 Ne7 6. Nf3 Nbc6 7. 0-0 Bg4 8. Bg5 f6 9. Be3 Qd7 10. Nbd2 0-0-0 11. b4 Rde8 12. b5 Nd8 13. a4 Nf5 14. Bxf5 Qxf5 15. a5 Qh5 16. Qb3 Re7 17. Rfc1 Rhe8 18. c4 Bxf3 19. Nxf3 dxc4 20. Rxc4 g5 21. b6 a6 22. bxc7 Bxc7 23. d5 Kb8 24. Rac1 Nf7 25. Qc3 g4 26. Rxc7 Rxe3 27. Rc8+ Rxc8 28. Qxc8+ Ka7 29. Qc5+ Kb8 30. fxe3 gxf3 31. Qc7+ Ka8 32. Qc8+ Ka7 33. Qc5+ Kb8 34. d6 Ng5 35. Qc8+ Ka7 36. Rb1 f2+ 37. Kf1 Qf7 38. d7 Qd5 39. Qxb7+ 1-0

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2005.12.28"]
[Round "6"]
[White "De Vrieze, Michael"]
[Black "Pel, Bonno"]
[Result "0-1"]
[ECO "E81"]
[WhiteElo "2083"]
[BlackElo "2350"]
[PlyCount "76"]
[EventDate "2005.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 110 Extra"]
[Source "ChessBase"]
[SourceDate "2006.03.10"]
[SourceVersion "2"]
[SourceVersionDate "2006.03.10"]
[SourceQuality "1"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 Nf6 5. f3 Nc6 6. Nge2 0-0 7. Bg5 a6 8. a4 e5 9. d5 Na5 10. Nc1 c5 11. Bd3 h6 12. Be3 Nh5 13. N1e2 f5 14. 0-0 Nf6 15. Rb1 b6 16. b4 Nb7 17. a5 bxa5 18. bxc5 Nxc5 19. Bxc5 dxc5 20. Qa4 Bd7 21. Qa3 Qc7 22. Ra1 a4 23. Nxa4 fxe4 24. Bxe4 Nxe4 25. fxe4 Rxf1+ 26. Kxf1 Rf8+ 27. Kg1 Bxa4 28. Qxa4 Qf7 29. Ng3 Qf2+ 30. Kh1 h5 31. Qa2 Qd4 32. Rf1 Rxf1+ 33. Nxf1 Qxe4 34. Qxa6 Qd3 35. Kg1 Qd4+ 36. Kh1 Qf2 37. Qa1 e4 38. Qb1 e3 0-1

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2005.12.28"]
[Round "5"]
[White "Schuetz, Peter"]
[Black "De Vrieze, Michael"]
[Result "0-1"]
[ECO "C15"]
[WhiteElo "1967"]
[BlackElo "2083"]
[PlyCount "42"]
[EventDate "2005.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 110 Extra"]
[Source "ChessBase"]
[SourceDate "2006.03.10"]
[SourceVersion "2"]
[SourceVersionDate "2006.03.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 dxe4 6. Qg4 Nf6 7. Qxg7 Rg8 8. Qh6 Nbd7 9. Bb2 b6 10. g3 Bb7 11. Bg2 Qe7 12. Ne2 0-0-0 13. a4 Ng4 14. Qd2 Nde5 15. Ba3 Qd7 16. Qf4 Nf3+ 17. Bxf3 exf3 18. Ng1 e5 19. dxe5 Nxe5 20. Qc1 Rge8 21. Kf1 Ba6+ 0-1

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2005.12.26"]
[Round "3"]
[White "Gasthofer, Alexander"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "E68"]
[WhiteElo "2418"]
[BlackElo "2083"]
[PlyCount "63"]
[EventDate "2005.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 110 Extra"]
[Source "ChessBase"]
[SourceDate "2006.03.10"]
[SourceVersion "2"]
[SourceVersionDate "2006.03.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 d6 3. d4 Nbd7 4. Nc3 e5 5. e4 g6 6. g3 Bg7 7. Bg2 0-0 8. 0-0 exd4 9. Nxd4 Nc5 10. Re1 Re8 11. b3 a5 12. Bb2 c6 13. Qc2 Qb6 14. Rab1 Ng4 15. Red1 Ne5 16. h3 a4 17. Bc1 a3 18. Be3 Qc7 19. f4 Ned7 20. Bf2 Nf6 21. Rd2 Re7 22. Rbd1 Ne8 23. b4 Ne6 24. Nde2 Bd7 25. Qb3 h6 26. Na4 c5 27. Nac3 Nd4 28. Nxd4 cxd4 29. Nd5 Ba4 30. Nxc7 Bxb3 31. Nxa8 Bxd1 32. Rxd1 1-0

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2005.12.24"]
[Round "2"]
[White "De Vrieze, Michael"]
[Black "Van Ketel, Raoul"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2083"]
[BlackElo "2271"]
[PlyCount "64"]
[EventDate "2005.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 110 Extra"]
[Source "ChessBase"]
[SourceDate "2006.03.10"]
[SourceVersion "2"]
[SourceVersionDate "2006.03.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 5. Ne2 Bg4 6. f3 Bh5 7. Nbc3 Bb4 8. Bf4 Qd7 9. Qd2 Nge7 10. 0-0-0 0-0-0 11. g4 Bg6 12. Bb5 h5 13. h3 Kb8 14. Kb1 Nc8 15. a3 Be7 16. Na4 a6 17. Bxc6 Qxc6 18. Qc3 Qxc3 19. Nexc3 b6 20. b4 hxg4 21. hxg4 Rxh1 22. Rxh1 Bf6 23. Rd1 Kb7 24. Ne2 Rh8 25. Nb2 Rh3 26. Rf1 Na7 27. g5 Bd8 28. Be5 Bxg5 29. Bxg7 Rh2 30. f4 Rxe2 31. fxg5 Rxc2 32. Ka1 Rc3 0-1

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2005.12.23"]
[Round "1"]
[White "Hummel, Paul"]
[Black "De Vrieze, Michael"]
[Result "0-1"]
[ECO "B43"]
[BlackElo "2083"]
[PlyCount "46"]
[EventDate "2005.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 110 Extra"]
[Source "ChessBase"]
[SourceDate "2006.03.10"]
[SourceVersion "2"]
[SourceVersionDate "2006.03.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nf6 7. a3 b5 8. Be3 Bb7 9. Bf3 Nc6 10. 0-0 Ne5 11. Bf4 h5 12. Be2 Bc5 13. Re1 Nfg4 14. b4 Ba7 15. Bxg4 hxg4 16. Ndxb5 axb5 17. Nxb5 Qb6 18. Nd6+ Ke7 19. Bxe5 Qxf2+ 20. Kh1 g3 21. Bxg3 Qxg3 22. Nf5+ exf5 23. exf5+ Kf8 0-1

[Event "Dieren op reserve-A"]
[Site "Dieren"]
[Date "2005.07.28"]
[Round "2"]
[White "De Vrieze, Michael"]
[Black "Dijkstra, Maarten"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2083"]
[PlyCount "112"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. g3 Bg7 5. h3 0-0 6. Bg2 e5 7. Nge2 c6 8. a4 exd4 9. Nxd4 Re8 10. 0-0 Na6 11. Re1 Nb4 12. Be3 d5 13. Bg5 h6 14. Bxf6 Qxf6 15. Nf3 Be6 16. e5 Qe7 17. Ne2 c5 18. Nf4 Rad8 19. c3 Nc6 20. Qe2 g5 21. Nh5 g4 22. hxg4 Bxg4 23. Nxg7 Kxg7 24. Qe3 Bxf3 25. Qxf3 Nxe5 26. Qf5 Qe6 27. Qf4 Qd6 28. Rad1 Ng6 29. Qd2 Rxe1+ 30. Qxe1 Qe7 31. Qf1 d4 32. cxd4 cxd4 33. Qb5 b6 34. b4 Qe5 35. Qc4 Nf8 36. Kf1 Ne6 37. Bh3 Ng5 38. Bg2 Ne6 39. Bh3 Qh5 40. Bxe6 Qxd1+ 41. Kg2 Rf8 42. Bf5 Qd2 43. Be4 Rd8 44. Qc7 Qg5 45. Bd3 Qd5+ 46. f3 Rd7 47. Qf4 Qg5 48. Qe4 Qf6 49. Qg4+ Qg5 50. Qxd7 Qd2+ 51. Kg1 Qxd3 52. Qg4+ Kh7 53. Qf4 Qg6 54. Kf2 Qc2+ 55. Kg1 Qb1+ 56. Kf2 Qc2+ 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.29"]
[Round "8"]
[White "Rietman, Frits"]
[Black "De Vrieze, Michael"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "2201"]
[PlyCount "50"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. b3 d6 4. Bb5+ Nd7 5. Bb2 a6 6. Bxd7+ Bxd7 7. c4 Bc6 8. Qe2 Nf6 9. Nc3 Be7 10. d4 cxd4 11. Nxd4 Qc7 12. 0-0 0-0 13. Rac1 Rac8 14. Nd5 Qd8 15. Nxe7+ Qxe7 16. e5 dxe5 17. Qxe5 Be4 18. Rfe1 Bg6 19. Rc3 Rfd8 20. Rf3 Qc5 21. Qf4 Rd7 22. Re5 Qc7 23. h3 Rcd8 24. Qe3 Rd6 25. g4 Nd7 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.28"]
[Round "7"]
[White "De Vrieze, Michael"]
[Black "Westerkamp, Bert"]
[Result "1/2-1/2"]
[ECO "B01"]
[BlackElo "2115"]
[PlyCount "39"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Bc4 Nf6 5. d3 a6 6. Bd2 e6 7. Qe2 b5 8. Bb3 Bb7 9. f4 Nc6 10. Nf3 Be7 11. Ne4 Qd7 12. Neg5 Nd5 13. 0-0 h6 14. Ne4 Nf6 15. c3 Nxe4 16. dxe4 Bc5+ 17. Be3 Qe7 18. Qf2 Bxe3 19. Qxe3 Na5 20. Ne5 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.26"]
[Round "5"]
[White "De Vrieze, Michael"]
[Black "Otte, Marijn Willem"]
[Result "1/2-1/2"]
[ECO "E88"]
[PlyCount "39"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. d5 g6 5. e4 Bg7 6. f3 0-0 7. Be3 c6 8. Qd2 Ne8 9. Bd3 f5 10. Nge2 Nf6 11. 0-0-0 f4 12. Bf2 c5 13. Kb1 Na6 14. a3 Bd7 15. Nc1 Ne8 16. N1a2 Nac7 17. b4 b6 18. b5 a6 19. a4 a5 20. Be2 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.24"]
[Round "4"]
[White "Adema, Johan"]
[Black "De Vrieze, Michael"]
[Result "1/2-1/2"]
[ECO "A90"]
[PlyCount "42"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. d4 f5 2. c4 e6 3. g3 Bb4+ 4. Bd2 Qe7 5. Bg2 Nf6 6. Nf3 0-0 7. 0-0 Bxd2 8. Nbxd2 d6 9. Qc2 Nc6 10. e4 fxe4 11. Nxe4 e5 12. dxe5 Nxe5 13. Nxe5 Qxe5 14. Rae1 Bf5 15. Qe2 Nxe4 16. Bxe4 Bxe4 17. Qxe4 Qxb2 18. Re2 Qc3 19. Re3 Qb2 20. Re2 Qc3 21. Re3 Qb2 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.23"]
[Round "3"]
[White "De Vrieze, Michael"]
[Black "Heemskerk, Wim"]
[Result "0-1"]
[ECO "A65"]
[BlackElo "2269"]
[PlyCount "80"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 Nf6 5. f3 0-0 6. Bg5 c5 7. d5 h6 8. Be3 e6 9. Qd2 exd5 10. cxd5 Nbd7 11. Nh3 Ne5 12. Nf2 h5 13. Be2 Nh7 14. 0-0 f5 15. exf5 gxf5 16. f4 Ng4 17. Nxg4 hxg4 18. g3 Bd7 19. a4 Re8 20. Bf2 Nf6 21. Bd3 Ne4 22. Bxe4 fxe4 23. Be3 Bf5 24. Rfe1 Qb6 25. Re2 Qb3 26. Nb5 Red8 27. Ra3 Qc4 28. b3 Qd3 29. Qe1 a6 30. Rd2 axb5 31. Rxd3 exd3 32. Bf2 Re8 33. Qd1 Re2 34. Ra1 c4 35. bxc4 bxc4 36. Rb1 c3 37. Rxb7 Bf6 38. h3 c2 39. Qf1 d2 40. Qxe2 d1Q+ 0-1

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.22"]
[Round "2"]
[White "Van der Marel, Bert"]
[Black "De Vrieze, Michael"]
[Result "0-1"]
[ECO "A56"]
[WhiteElo "2201"]
[PlyCount "122"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. d4 c5 2. d5 e5 3. c4 d6 4. e4 Be7 5. Nf3 Nf6 6. Nc3 Nbd7 7. Bd3 h6 8. h3 Nf8 9. Be3 Ng6 10. Qd2 Bd7 11. a4 a5 12. Nb5 b6 13. Rc1 0-0 14. g4 Nh7 15. b3 Bxb5 16. cxb5 Ng5 17. Ng1 Nh4 18. Kd1 Ngf3 19. Nxf3 Nxf3 20. Qe2 Nh4 21. f4 exf4 22. Bxf4 Bg5 23. Rf1 Re8 24. Qf2 Ra7 25. Kc2 Ng6 26. Bxg5 hxg5 27. Rce1 Re5 28. Qd2 Nh4 29. Rf2 f6 30. Ref1 Qe7 31. Re2 Rc7 32. Kb2 Kf8 33. Ref2 Ke8 34. Rc1 Kd8 35. Rc4 Kc8 36. Qc1 Kb8 37. Ka1 Rc8 38. Rfc2 Rh8 39. Qg1 Qa7 40. Qe3 Ng6 41. Bf1 Nf4 42. Qf2 Ree8 43. Qg3 Qe7 44. Rf2 Qe5+ 45. Ka2 Kb7 46. Rf3 Rh4 47. Qf2 Reh8 48. Rcc3 Ng6 49. Bg2 Qh2 50. e5 Qxe5 51. Rfe3 Qf4 52. Qc2 Ne5 53. Re4 Qh2 54. Qf2 Rxh3 55. Rxh3 Rxh3 56. Rxe5 dxe5 57. d6+ Ka7 58. d7 Rd3 59. d8Q Rxd8 60. Qf3 e4 61. Qxe4 Rd2+ 0-1

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.21"]
[Round "1"]
[White "De Vrieze, Michael"]
[Black "Florath, Patrick"]
[Result "0-1"]
[ECO "E08"]
[BlackElo "2310"]
[PlyCount "48"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. g3 Nf6 4. Bg2 Be7 5. Nf3 0-0 6. 0-0 Nbd7 7. Qc2 c6 8. Rd1 b5 9. b3 bxc4 10. bxc4 Ba6 11. Nbd2 Qa5 12. Nb3 Qa4 13. cxd5 cxd5 14. Bg5 Rfc8 15. Qb2 Ba3 16. Qd2 Ne4 17. Qe1 Bb2 18. Rab1 Qxa2 19. Nfd2 Nc3 20. Ra1 Bxa1 21. Rxa1 Nxe2+ 22. Kh1 Qxa1 23. Qxa1 Rc1+ 24. Qxc1 Nxc1 0-1

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.23"]
[Round "9"]
[White "De Vrieze, Michael"]
[Black "Hendriks, Tobias"]
[Result "1-0"]
[ECO "A42"]
[PlyCount "95"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. c4 d6 4. Nc3 Nc6 5. Nge2 e5 6. d5 Nce7 7. f3 f5 8. Be3 Nf6 9. Qd2 0-0 10. 0-0-0 Bd7 11. Kb1 a6 12. exf5 Nxf5 13. Ng3 Nxe3 14. Qxe3 Qe8 15. Bd3 Qf7 16. Bc2 Ne8 17. Nce4 Qf4 18. Qb3 b6 19. h4 Bh6 20. h5 g5 21. Qd3 Rf7 22. Rdf1 Rg7 23. Ne2 Qf7 24. g4 Nf6 25. N2g3 Rf8 26. b4 Qe7 27. a3 Nxe4 28. Nxe4 Rf4 29. Bb3 Kh8 30. Rc1 Rgf7 31. Rh3 Qf8 32. Rc3 c5 33. bxc5 bxc5 34. Bd1 Bc8 35. Rh2 Qd8 36. Rb2 Bf8 37. Rcb3 h6 38. Rb8 Rc7 39. R2b6 Rff7 40. Qb3 Qd7 41. Ka2 Kg7 42. Bc2 Kh8 43. Ng3 Rb7 44. Bf5 Rxb6 45. Qxb6 Qa4 46. Rxc8 Qxc4+ 47. Qb3 Qd4 48. Ne4 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.22"]
[Round "8"]
[White "Mellema, Andries"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "51"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Nc3 c6 5. a4 Be7 6. Bc4 Ngf6 7. 0-0 0-0 8. h3 Nxe4 9. Nxe4 d5 10. Bb3 dxe4 11. Nxe5 Nxe5 12. dxe5 Qxd1 13. Rxd1 Bc5 14. Be3 Bxe3 15. fxe3 Re8 16. Rd4 Be6 17. Bxe6 Rxe6 18. Rad1 Rxe5 19. Rd7 Rb8 20. Rxb7 Ree8 21. Rdd7 Rxb7 22. Rxb7 f5 23. Rxa7 Rd8 24. Rc7 Rd1+ 25. Kh2 Re1 26. a5 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.21"]
[Round "7"]
[White "De Vrieze, Michael"]
[Black "Bosma, Jaap"]
[Result "1-0"]
[ECO "C68"]
[BlackElo "2092"]
[PlyCount "77"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Bd6 6. d4 Bg4 7. dxe5 Bxf3 8. Qxf3 Bxe5 9. Bf4 Qf6 10. Bxe5 Qxe5 11. 0-0-0 Nf6 12. Qg3 Qxg3 13. hxg3 Ng4 14. Rd2 Rd8 15. Rxd8+ Kxd8 16. Rd1+ Ke7 17. Rd2 Rd8 18. Rxd8 Kxd8 19. Nd1 Ke7 20. f3 Ne5 21. Ne3 h5 22. Kd2 g6 23. Ke2 c5 24. f4 Ng4 25. Nd5+ Kd6 26. c4 c6 27. e5+ Kd7 28. Nc3 f6 29. Ne4 b6 30. Nxf6+ Nxf6 31. exf6 Ke6 32. Kf3 Kxf6 33. g4 hxg4+ 34. Kxg4 a5 35. a4 Ke6 36. Kg5 Kf7 37. f5 gxf5 38. Kxf5 b5 39. b3 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.20"]
[Round "6"]
[White "Arp, Frans"]
[Black "De Vrieze, Michael"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2018"]
[PlyCount "92"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. dxe5 dxe5 6. 0-0 Be7 7. Qe2 b5 8. Bb3 a6 9. Rd1 Qc7 10. Bg5 Bxg5 11. Nxg5 Nh6 12. Nd2 Nc5 13. h3 0-0 14. Nf1 Nxb3 15. axb3 f6 16. Nf3 Bb7 17. Ne3 Rad8 18. c4 Rxd1+ 19. Rxd1 Rd8 20. c5 Bc8 21. g4 Nf7 22. b4 a5 23. Rxd8+ Qxd8 24. bxa5 Qxa5 25. Qd2 Qxd2 26. Nxd2 Ng5 27. Kg2 Ne6 28. Nb3 Nf4+ 29. Kg3 Nd3 30. Nd1 Be6 31. Na5 Nxc5 32. Kf3 Bd7 33. Ne3 Ne6 34. h4 Nd4+ 35. Kg3 Kf7 36. Nb7 Nb3 37. Nd6+ Ke6 38. Ndf5 g6 39. Nh6 Nc5 40. f3 Nd3 41. b3 Ke7 42. g5 fxg5 43. hxg5 Be6 44. Neg4 Bxb3 45. Nf6 Be6 46. Nxh7 b4 0-1

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.19"]
[Round "5"]
[White "De Vrieze, Michael"]
[Black "Wiersma, Wytze"]
[Result "1/2-1/2"]
[ECO "D10"]
[PlyCount "76"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. g3 Nf6 4. Bg2 a6 5. Nf3 b5 6. c5 Nbd7 7. Bf4 e6 8. 0-0 Be7 9. a4 Bb7 10. a5 0-0 11. b4 Ne8 12. Na3 Bf6 13. g4 g5 14. Bg3 Qe7 15. Nc2 e5 16. dxe5 Nxe5 17. Nxe5 Bxe5 18. Bxe5 Qxe5 19. Nd4 Ng7 20. Ra3 Rae8 21. Re3 Qf6 22. Rf3 Qg6 23. Qd3 Qxd3 24. exd3 Re7 25. Re3 Rfe8 26. Rfe1 Kf8 27. h3 Rc7 28. Rxe8+ Nxe8 29. Re5 Re7 30. Re3 Rc7 31. Nf3 f6 32. Nd4 Bc8 33. Kf1 Ng7 34. Ke1 Bd7 35. Kd2 Rc8 36. Rf3 Kf7 37. Re3 Re8 38. Rxe8 Kxe8 1/2-1/2

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.18"]
[Round "4"]
[White "De Vrieze, Michael"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "D11"]
[PlyCount "68"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. g3 Nf6 4. Bg2 Bf5 5. Nf3 e6 6. 0-0 h6 7. Nc3 Be7 8. Qb3 Qb6 9. c5 Qxb3 10. axb3 Nbd7 11. Bf4 0-0 12. Rfc1 g5 13. Bd2 Ne4 14. Nxe4 Bxe4 15. Ne5 Bxg2 16. Nxd7 Rfd8 17. Ne5 Be4 18. f3 Bh7 19. Ra4 f6 20. Ng4 h5 21. Nf2 e5 22. e3 e4 23. f4 gxf4 24. gxf4 Kf7 25. Kh1 Bf5 26. Rca1 a6 27. Rg1 Rg8 28. Raa1 Bg4 29. h3 Bf3+ 30. Kh2 f5 31. Rxg8 Rxg8 32. Rg1 Bh4 33. Rxg8 Kxg8 34. Nh1 Kf7 1/2-1/2

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.17"]
[Round "3"]
[White "Van Kesteren, Stef"]
[Black "De Vrieze, Michael"]
[Result "0-1"]
[ECO "C41"]
[PlyCount "74"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. 0-0 Be7 6. a4 Ngf6 7. Nc3 0-0 8. Bb3 b6 9. Re1 a6 10. h3 Bb7 11. Be3 exd4 12. Qxd4 Nc5 13. Ba2 Ne8 14. Qd2 Bf6 15. Bd4 Ne6 16. Be3 c5 17. Nd5 b5 18. axb5 axb5 19. Nxf6+ Nxf6 20. Bxe6 fxe6 21. Rxa8 Bxa8 22. Bg5 e5 23. Bxf6 Qxf6 24. Qg5 Bc6 25. Qxf6 Rxf6 26. c3 Rf8 27. Nd2 Ra8 28. f3 Ra2 29. Rb1 Kf7 30. Kf1 Ke6 31. Kf2 b4 32. Ke3 Ba4 33. b3 bxc3 34. bxa4 cxd2 35. g4 c4 36. Ke2 Rc2 37. a5 Rc1 0-1

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.16"]
[Round "2"]
[White "De Vrieze, Michael"]
[Black "Goudriaan, Etienne"]
[Result "1/2-1/2"]
[ECO "E01"]
[PlyCount "80"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. g3 c5 4. Bg2 Nf6 5. Nf3 cxd4 6. Nxd4 e5 7. Nf3 d4 8. 0-0 Nc6 9. Qa4 Nd7 10. Na3 Nc5 11. Qc2 e4 12. Ng5 f5 13. Nh3 d3 14. exd3 Nd4 15. Qd1 Nxd3 16. Nf4 Ne5 17. Nd5 Ndf3+ 18. Kh1 Bxa3 19. Bxf3 Nxf3 20. Qa4+ b5 21. Qxa3 bxc4 22. Qc5 Be6 23. Nc7+ Kf7 24. Qc6 Qe7 25. Nxa8 Rc8 26. Qb5 Rxa8 27. Be3 h5 28. Rad1 Rc8 29. a4 h4 30. Kg2 Rh8 31. Rh1 h3+ 32. Kf1 Rd8 33. Ke2 f4 34. Qh5+ Kg8 35. gxf4 c3 36. Bc5 Bc4+ 37. Ke3 Rxd1 38. Bxe7 c2 39. Rxd1 cxd1Q 40. Qe8+ Kh7 1/2-1/2

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.15"]
[Round "1"]
[White "Rongen, Jos"]
[Black "De Vrieze, Michael"]
[Result "0-1"]
[ECO "B43"]
[PlyCount "54"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nc3 c5 2. Nf3 e6 3. e4 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Be3 Nf6 7. f3 b5 8. Bd3 Bb7 9. Qd2 Bc5 10. 0-0-0 Qb6 11. Be2 Nc6 12. g4 h6 13. h4 Rc8 14. Rh3 g6 15. f4 Nb4 16. Nb3 Bxe3 17. Rxe3 Nxc2 18. Kxc2 b4 19. g5 bxc3 20. Rxc3 Bxe4+ 21. Kc1 Rxc3+ 22. bxc3 hxg5 23. hxg5 Nd5 24. c4 Qc7 25. Kb2 Nxf4 26. Qd4 Rh2 27. Ka1 Nxe2 0-1

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2003.12.27"]
[Round "6"]
[White "Leuw, Micha"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2211"]
[PlyCount "63"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. 0-0 Qc7 7. c4 Bc5 8. Nb3 Ba7 9. Kh1 Nc6 10. f4 h5 11. Qf3 Nb4 12. Nc3 Nxd3 13. Qxd3 d6 14. Be3 Bd7 15. Rac1 Bxe3 16. Qxe3 Qxc4 17. f5 Bc6 18. fxe6 Qxe6 19. Nd4 Ng4 20. Qf4 Qf6 21. Nf5 0-0-0 22. h3 g5 23. Qg3 Ne5 24. Nd5 Qe6 25. Nd4 Qe8 26. Qb3 g4 27. Nxc6 Nxc6 28. Nb6+ Kb8 29. Rxf7 Na5 30. Qd5 gxh3 31. Rcc7 hxg2+ 32. Kg1 1-0

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2003.12.26"]
[Round "5"]
[White "Struik, Tjapko"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "2182"]
[PlyCount "73"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Qg4 Nf6 5. Qxg7 Rg8 6. Qh6 Nxe4 7. Qxh7 Rf8 8. Nf3 Qf6 9. Qh6 Nxc3 10. a3 Be7 11. bxc3 c5 12. Qxf6 Bxf6 13. Bf4 Rg8 14. Rg1 Nc6 15. Bb5 Bd7 16. Bxc6 Bxc6 17. Kd2 cxd4 18. cxd4 Bb5 19. g4 Rc8 20. g5 Bg7 21. h4 Rh8 22. Rg4 Ke7 23. Rh1 Rh5 24. Be5 Bxe5 25. dxe5 Rc4 26. Rxc4 dxc4 27. Nd4 Ba6 28. Ke3 Kf8 29. Kf4 Kg7 30. Kg4 Rh8 31. c3 Rd8 32. h5 Rd5 33. Kf4 Ra5 34. h6+ Kh7 35. Nxe6 Rxa3 36. g6+ fxg6 37. Nf8+ 1-0

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2003.12.24"]
[Round "4"]
[White "De Vrieze, Michael"]
[Black "Velema, Sander"]
[Result "1-0"]
[ECO "B03"]
[BlackElo "2129"]
[PlyCount "73"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. b3 e5 10. dxe5 dxe5 11. Qxd8 Rxd8 12. Bxb6 axb6 13. Nge2 Nc6 14. Na4 Bf8 15. Nec3 Ba3 16. Rd1 Rxd1+ 17. Kxd1 Bc5 18. f3 Bf5 19. g4 Rd8+ 20. Ke1 Bc2 21. Be2 f5 22. Nxc5 bxc5 23. gxf5 gxf5 24. Kf2 e4 25. Rg1+ Kh8 26. fxe4 fxe4 27. Na4 Rf8+ 28. Ke3 Rf5 29. h4 Ne7 30. Rg5 h6 31. Rxf5 Nxf5+ 32. Kd2 Bb1 33. Nc3 Bd3 34. Bxd3 exd3 35. Na4 Nxh4 36. Nxc5 h5 37. Nxb7 1-0

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2003.12.23"]
[Round "3"]
[White "Brandenburg, Daan"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2262"]
[PlyCount "123"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Bd3 Nf6 7. Nb3 b5 8. 0-0 Bb7 9. a3 Nc6 10. Be3 h5 11. f3 Ne5 12. Qe2 Rc8 13. Bd4 Ng6 14. e5 Nf4 15. Qd2 N4d5 16. Nxd5 Nxd5 17. f4 g6 18. Qf2 h4 19. h3 Ne7 20. Bb6 Qb8 21. a4 b4 22. Bc5 Nf5 23. Rad1 Qc7 24. Bb6 Qb8 25. Rd2 Qa8 26. Rfd1 Bc6 27. a5 Rh5 28. Nd4 Nxd4 29. Qxd4 Qb7 30. Be2 Rh8 31. Bf3 Bxf3 32. gxf3 Rh5 33. Qxd7+ Qxd7 34. Rxd7 Be7 35. R1d2 Rf5 36. Be3 Kf8 37. Ra7 Rxf4 38. Rdd7 Bc5 39. Bxc5+ Rxc5 40. Rxa6 Rxc2 41. Ra8+ Kg7 42. a6 Rxb2 43. a7 Ra2 44. Rc8 Rxf3 45. a8Q Rxa8 46. Rxa8 Rxh3 47. Re8 Rg3+ 48. Kh2 g5 49. Rxe6 Re3 50. Ree7 b3 51. Rxf7+ Kg6 52. Rf6+ Kh5 53. Rb7 Re2+ 54. Kg1 b2 55. Rfb6 Rxe5 56. Rxb2 Ra5 57. R7b5 Ra1+ 58. Kh2 Ra8 59. Rg2 Rg8 60. Kh3 Rg7 61. Rg4 Rg8 62. Rxh4+ 1-0

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2003.12.21"]
[Round "1"]
[White "Florath, Patrick"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "C19"]
[WhiteElo "2304"]
[PlyCount "107"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 b6 8. Bb5+ Bd7 9. Bd3 c4 10. Bf1 Ba4 11. g3 h6 12. h4 Nbc6 13. Bh3 Kd7 14. 0-0 Qg8 15. h5 Qh7 16. Ra2 Kc7 17. Nh4 g5 18. Ng2 Nf5 19. Kh2 Raf8 20. f4 gxf4 21. Rxf4 Nce7 22. g4 Ng7 23. Bd2 Ne8 24. Be1 Rhg8 25. Bh4 Nc6 26. Ne3 Kb7 27. Qf3 Nc7 28. Bg2 b5 29. Qf2 a6 30. Ra1 Rg7 31. Rf1 Kc8 32. Rf6 Kd7 33. Qe2 Ne7 34. R1f2 Ng8 35. R6f4 Ne7 36. Qf3 Ng8 37. Qd1 Ne7 38. Qh1 Qg8 39. Bf6 Rh7 40. Kh3 Ke8 41. Bxe7 Kxe7 42. Bxd5 Nxd5 43. Nxd5+ exd5 44. Qxd5 Rd8 45. Qc5+ Ke8 46. e6 f5 47. Rxf5 Qxe6 48. Re5 Qxe5 49. dxe5 Bxc2 50. Rf8+ Kd7 51. Qd6+ Kc8 52. Rxd8+ Kb7 53. Rb8+ Ka7 54. Qb6# 1-0

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2002.??.??"]
[Round "1.7"]
[White "De Vrieze, Michael"]
[Black "Lin, Ta"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "2036"]
[BlackElo "2361"]
[PlyCount "64"]
[EventDate "2002.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e3 Nf6 5. Bg3 Bg7 6. Nd2 d6 7. c3 Nc6 8. Bd3 e5 9. h4 f4 10. Bg6+ Kf8 11. hxg5 hxg5 12. Rxh8+ Bxh8 13. Bh2 Ng4 14. exf4 exf4 15. Ngf3 Qf6 16. Bd3 Nxh2 17. Nxh2 Qh6 18. Nhf1 Bd7 19. Qb3 Re8+ 20. Kd1 b6 21. Qd5 Ne7 22. Qb7 Ba4+ 23. b3 Bc6 24. Qxc7 Bxg2 25. Qxa7 Nd5 26. Kc2 Nxc3 27. Bc4 Nd5 28. f3 Qg6+ 29. Kd1 Nc3+ 30. Kc1 Bxd4 31. Qd7 Re1+ 32. Kb2 Nb5# 0-1

[Event "Groningen SO ON op A"]
[Site "Groningen"]
[Date "2001.??.??"]
[Round "2.3"]
[White "Schiffer, Kai Uwe"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "2314"]
[BlackElo "2047"]
[PlyCount "143"]
[EventDate "2001.12.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. Bd3 c5 5. c3 Nc6 6. Ngf3 Qb6 7. 0-0 cxd4 8. cxd4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Be7 11. Qc2 Bd7 12. Be3 Nb4 13. Qb3 Qb5 14. Rfc1 Nd5 15. Qxb5 Bxb5 16. Bxd5 exd5 17. Rc7 Bc6 18. Bg5 Bb4 19. a3 Ba5 20. Re7+ Kf8 21. b4 f6 22. Re3 Bc7 23. Bh4 Kf7 24. Bg3 Bb6 25. a4 a5 26. b5 Bd7 27. Bd6 Rhe8 28. Bc5 Bc7 29. b6 Bf4 30. Rc3 Rac8 31. g3 Bb8 32. Kg2 Re6 33. Re3 Rce8 34. Raa3 Bd6 35. Rec3 Bb8 36. Re3 Bd6 37. Rec3 Bb8 38. Nd2 Rc8 39. Re3 Bd6 40. Nb3 Ra8 41. Bxd6 Rxd6 42. Nc5 Bc6 43. Rac3 Rc8 44. f4 Rdd8 45. Kf3 Re8 46. Ke2 Rxe3+ 47. Rxe3 Ra8 48. Kd2 Rc8 49. Rc3 Re8 50. Nb3 Ra8 51. Rc5 Ra6 52. Nxa5 Rxb6 53. Nxc6 bxc6 54. Kc3 Ke7 55. Ra5 Rb7 56. Ra8 Kd6 57. a5 Rb1 58. a6 Ra1 59. a7 Kc7 60. Rg8 Rxa7 61. Rxg7+ Kb6 62. Rxa7 Kxa7 63. g4 Kb6 64. Kb4 c5+ 65. dxc5+ Kc6 66. g5 fxg5 67. fxg5 d4 68. h4 d3 69. Kc3 Kxc5 70. h5 Kd6 71. g6 hxg6 72. h6 1-0

[Event "Groningen SO ON op-A"]
[Site "Groningen"]
[Date "2000.??.??"]
[Round "1"]
[White "Florath, Patrick"]
[Black "De Vrieze, Michael"]
[Result "1-0"]
[ECO "C19"]
[WhiteElo "2344"]
[PlyCount "99"]
[EventDate "2000.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Qa5 8. Bd2 cxd4 9. cxd4 Qa4 10. Qb1 a6 11. Bd3 Nbc6 12. Bb4 Nf5 13. c3 Na5 14. Bc2 Qb5 15. Qc1 h6 16. Rb1 g5 17. g4 Nh4 18. Nxh4 gxh4 19. Qf4 Nc6 20. Bd6 Qa5 21. Bb4 Qd8 22. Rg1 Qg5 23. Qd2 Nxb4 24. cxb4 Qxd2+ 25. Kxd2 Rg8 26. Rb3 Bd7 27. Rh3 Ke7 28. Rxh4 Rh8 29. Rg3 Bb5 30. Rgh3 Bf1 31. Rc3 Kd7 32. Bd3 Bxd3 33. Kxd3 Rac8 34. Rxc8 Kxc8 35. f3 Kd7 36. Rh5 Rc8 37. Rxh6 Rc1 38. h4 Ra1 39. h5 Rxa3+ 40. Ke2 Rb3 41. Rh8 Rxb4 42. h6 Rb2+ 43. Ke3 a5 44. Rb8 Rh2 45. Rxb7+ Kc6 46. Rxf7 Rxh6 47. Rf6 Rxf6 48. exf6 Kd6 49. f4 a4 50. Kd3 1-0

[Event "Groningen ABM op"]
[Site "Groningen"]
[Date "1999.??.??"]
[Round "?"]
[White "De Vrieze, Michael"]
[Black "Balje, Jan"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2195"]
[PlyCount "56"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. d3 Nc6 7. Nf3 dxe4 8. Nxe4 Be7 9. Bd2 Nf6 10. Bc3 Nd5 11. Bd2 0-0 12. 0-0 Qc7 13. g3 Rad8 14. b3 b5 15. a4 a6 16. axb5 axb5 17. Qe1 Ra8 18. Qf2 Ncb4 19. Rxa8 Rxa8 20. Ne1 Nf6 21. Bc3 Nxe4 22. dxe4 c4 23. Qd2 Rd8 24. Qe2 cxb3 25. Bxb4 b2 26. Nd3 Bxb4 27. Nxb2 Rd2 28. Qxb5 Qxc2 0-1

