Partijen Open Drents Weekendtoernooi 2011

 [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.27"] [Round "1"] [White "Kodentsov, Grigori"] [Black "Van Mourik, Maurice"] [Result "1-0"] [ECO "C14"] [WhiteElo "2264"] [BlackElo "1784"] [PlyCount "145"] [TimeControl "7200"]  1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Ne4 6. Be3 Nxc3 7. bxc3 c5 8. Qg4  Kf8 9. Nf3 Nc6 10. Bd3 h5 11. Qf4 c4 12. Be2 Qa5 13. Bd2 b5 14. a3 b4 15. cxb4  Bxb4 16. Bxb4+ Nxb4 17. O-O Nc6 18. Ng5 Qc7 19. Rab1 f5 20. h4 Qe7 21. Qe3 g6  22. g3 Kg7 23. Nh3 Ba6 24. Nf4 Rae8 25. Rfd1 Rd8 26. Bf3 Rh7 27. Qc3 Rhh8 28.  Qe1 Rh7 29. Kg2 Rhh8 30. Qc3 Rh7 31. Rh1 Rhh8 32. Be2 Rh7 33. Qe3 Rhh8 34. Nh3  Rhf8 35. Qf4 Rh8 36. Ng5 Rhf8 37. f3 Ra8 38. Nh3 Rad8 39. Qe3 Ra8 40. Nf4 Rh8  41. Qc3 Rae8 42. Qe3 Rh7 43. Rbf1 Rhh8 44. Nh3 Rhf8 45. Rf2 Rb8 46. Nf4 Rh8 47.  Qc3 Rbe8 48. Nh3 Rb8 49. Rff1 Rbe8 50. Rb1 Rc8 51. Qe3 Rce8 52. Bd1 Rhf8 53.  Be2 Rh8 54. Rhf1 Rhf8 55. Rf2 Rc8 56. Bd1 Ra8 57. Nf4 Rab8 58. Rxb8 Rxb8 59. c3  Na5 60. Ba4 Nb3 61. Bc6 Bb7 62. Bxb7 Rxb7 63. g4 hxg4 64. fxg4 Rb6 65. g5 a5  66. Kh3 Kf7 67. h5 gxh5 68. g6+ Kg7 69. Nxh5+ Kg8 70. Nf6+ Kg7 71. Nh5+ Kg8 72.  Qh6 Rb8 73. Nf6+ 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.27"] [Round "1"] [White "Overeem, Marc"] [Black "Taal, Rieks"] [Result "0-1"] [ECO "A08"] [WhiteElo "2129"] [BlackElo "1741"] [PlyCount "48"] [TimeControl "7200"]  1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. O-O Bg7 5. d3 O-O 6. Nbd2 c5 7. e4 Bg4 8. h3  Bd7 9. e5 Ne8 10. Re1 Nc7 11. Nb3 b6 12. c4 Nc6 13. Qe2 dxc4 14. dxc4 Ne6 15.  Bd2 Qc7 16. Bc3 Rad8 17. Rad1 Bc8 18. h4 Rxd1 19. Rxd1 Rd8 20. Rxd8+ Qxd8 21.  h5 gxh5 22. Qe4 Bb7 23. Nh4 Qd1+ 24. Kh2 Nxe5 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.27"] [Round "1"] [White "Zilverberg, Paul"] [Black "Van Velzen, Martin"] [Result "0-1"] [ECO "E94"] [WhiteElo "1487"] [BlackElo "1885"] [PlyCount "68"] [TimeControl "7200"]  1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. c4 Nf6 5. Nc3 O-O 6. Be2 Nbd7 7. O-O e5 8. d5  Nc5 9. Qc2 a5 10. Bg5 h6 11. Bh4 g5 12. Bg3 Nh5 13. Nd2 Nf4 14. Bxf4 exf4 15.  f3 h5 16. h3 g4 17. fxg4 hxg4 18. Bxg4 Bxg4 19. hxg4 Bd4+ 20. Rf2 Bxf2+ 21.  Kxf2 Qh4+ 22. Kg1 Kg7 23. Nf3 Qxg4 24. Nb5 Rh8 25. Qc3+ f6 26. Re1 Qh5 27. Kf2  Rae8 28. Qc2 Qg6 29. Kg1 Rxe4 30. Rxe4 Nxe4 31. Nxc7 Rh1+ 32. Kxh1 Ng3+ 33. Kg1  Qxc2 34. Ne6+ Kg8 0-1  

 [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Rietveld, Renze"] [Black "Hummel, Paul"] [Result "0-1"] [ECO "B70"] [WhiteElo "2266"] [BlackElo "1962"] [PlyCount "64"] [TimeControl "7200"]  1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. g3 Bg7 6. Ne2 Nf6 7. Nbc3 d6 8.  Bg2 O-O 9. O-O a6 10. a4 Qc7 11. h3 b6 12. Nf4 e6 13. Qe2 Nd4 14. Qd3 Nd7 15.  Be3 Ne5 16. Qxd4 Nf3+ 17. Bxf3 Bxd4 18. Bxd4 Bb7 19. Bf6 Rfe8 20. Rfd1 Qc5 21.  Rd2 b5 22. a5 b4 23. Na4 Qxa5 24. Rxd6 Rac8 25. b3 Rxc2 26. Rad1 Bc6 27. Nb2  Qc5 28. R6d2 Rxd2 29. Rxd2 e5 30. Nfd3 Qc3 31. Nc4 Bb5 32. Bxe5 Rxe5 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Van Foreest, Lucas"] [Black "Kodentsov, Grigori"] [Result "0-1"] [ECO "E90"] [WhiteElo "1898"] [BlackElo "2264"] [PlyCount "120"] [TimeControl "7200"]  1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 O-O 5. e4 d6 6. Bd3 e5 7. dxe5 dxe5 8.  Nxe5 Nxe4 9. Bxe4 Qxd1+ 10. Kxd1 Bxe5 11. Kc2 c6 12. Bh6 Bg7 13. Bf4 Be6 14. c5  Re8 15. f3 Nd7 16. b4 Nf6 17. Rad1 a5 18. b5 Nxe4 19. Nxe4 cxb5 20. Nd6 Rec8  21. Nxc8 Rxc8 22. Bd6 b6 23. Be7 Bf5+ 24. Kc1 a4 25. g4 Be6 26. c6 Rxc6+ 27.  Kb1 h5 28. h3 Rc3 29. f4 Bc4 30. gxh5 Be6 31. Rd8+ Kh7 32. hxg6+ fxg6 33. Rf8  Bxf8 34. Bxf8 a3 35. h4 Bf5+ 36. Ka1 Rf3 37. Bd6 Kh6 38. Rg1 Kh5 39. Rh1 Kg4  40. Be7 Kxf4 41. Bb4 Kg4 42. Be7 Re3 43. Bb4 Rd3 44. Be7 Rf3 45. Bb4 Be6 46.  Re1 Bc4 47. Kb1 Kxh4 48. Be7+ Kg4 49. Bd6 Kf5 50. Rg1 g5 51. Bg3 g4 52. Be1 Re3  53. Bb4 g3 54. Rg2 Kg4 55. Bd2 Rf3 56. Rg1 Kh3 57. Re1 g2 58. Be3 Rf1 59. Rc1  Bd3+ 60. Ka1 g1=Q 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Groenewold, Jan Joris"] [Black "Van Velzen, Martin"] [Result "1-0"] [ECO "A02"] [WhiteElo "2220"] [BlackElo "1885"] [PlyCount "45"] [TimeControl "7200"]  1. f4 g6 2. Nf3 Bg7 3. g3 d6 4. Bg2 Nd7 5. O-O Ngf6 6. d3 O-O 7. e4 e5 8. Nbd2  c6 9. Nc4 Qc7 10. a4 b6 11. fxe5 dxe5 12. b3 Re8 13. Ba3 Bf8 14. Bb2 Bb7 15.  Bh3 h5 16. Ng5 Bc5+ 17. Kh1 Rf8 18. Qe2 Be7 19. Nf3 Bd6 20. d4 exd4 21. e5 Nxe5  22. Nfxe5 Rae8 23. Rxf6 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Den Boer, Paul"] [Black "Clemens, Adrian"] [Result "0-1"] [ECO "B40"] [WhiteElo "1866"] [BlackElo "2190"] [PlyCount "76"] [TimeControl "7200"]  1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 b5 5. Bg2 Bb7 6. d3 Nf6 7. O-O d6 8. Nh4 Be7  9. f4 b4 10. Ne2 Nc6 11. h3 O-O 12. Be3 a5 13. Nf3 c4 14. g4 cxd3 15. cxd3 a4  16. Ng3 Qa5 17. g5 Nd7 18. Rc1 Rac8 19. h4 Qb5 20. f5 Rfe8 21. fxe6 fxe6 22.  Bh3 Bf8 23. d4 Na5 24. Rxc8 Bxc8 25. Nd2 Nb8 26. Qf3 Qb7 27. h5 g6 28. h6 Qe7 ({  Aangewezen is hier volgens Adrian} 29. e5) 29. Rf2 e5 30. Bxc8 Rxc8 31. d5 Rc2  32. Ndf1 b3 33. a3 Rxf2 34. Qxf2 Nc4 35. Bc1 Nd7 36. Nd2 Qxg5 37. Nxb3 Qg4 38.  Nd2 Qd1+ 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Hogerhorst, Tony"] [Black "Van Foreest, Jorden"] [Result "0-1"] [ECO "D15"] [WhiteElo "1865"] [BlackElo "2073"] [PlyCount "44"] [TimeControl "7200"]  1. c4 c6 2. Nc3 d5 3. cxd5 cxd5 4. d4 Nf6 5. Nf3 Nc6 6. e3 a6 7. Bd3 Bg4 8. h3  Bh5 9. Bd2 e6 10. O-O Bd6 11. Rc1 O-O 12. a3 Re8 13. b4 Rc8 14. Be2 Bb8 15. b5  axb5 16. Nxb5 Ne4 17. Be1 Nd6 18. Nc3 Nc4 19. Nb5 Nxa3 20. Nxa3 Bxf3 21. Nb5  Bxe2 22. Qxe2 Nxd4 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Vinke, Maarten"] [Black "Pastoor, Ernst-Jan"] [Result "0-1"] [ECO "B06"] [WhiteElo "2050"] [BlackElo "1852"] [PlyCount "45"] [TimeControl "7200"]  1. e4 d6 2. d4 g6 3. f4 Bg7 4. Nf3 Nf6 5. Nbd2 O-O 6. Be2 c5 7. c3 cxd4 8. cxd4  Nc6 9. O-O Bd7 10. Kh1 Rc8 11. Bd3 Qa5 12. d5 Nb4 13. Bb1 Bb5 14. Re1 Ng4 15.  Nb3 Nf2+ 16. Kg1 Nxd1 17. Nxa5 Rxc1 18. Nb3 Rfc8 19. e5 dxe5 20. Bf5 gxf5 21.  Nxc1 Nc2 22. Rxd1 Nxa1 23. fxe5 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Hommes, Elmar"] [Black "Leentjens, Gilbert"] [Result "1-0"] [ECO "C57"] [WhiteElo "1997"] [BlackElo "1843"] [PlyCount "81"] [TimeControl "7200"]  1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 b5 6. Bf1 h6 7. Nf3 Qxd5 8.  Nc3 Qd6 9. Bxb5 Bd7 10. O-O Be7 11. d3 O-O 12. Be3 Rab8 13. Ba4 Bg4 14. Bxc6  Qxc6 15. Nxe5 Qe6 16. Nxg4 Nxg4 17. Re1 Qd7 18. Rb1 f5 19. Qf3 c6 20. h3 Nf6  21. Bf4 Rb7 22. Re2 g5 23. Be5 Kh7 24. Rbe1 g4 25. hxg4 Nxg4 26. Bg3 Bd6 27.  Re6 Bxg3 28. Qxg3 Qg7 29. Qd6 Rff7 30. Nd1 f4 31. Qxc6 Nf6 32. Qf3 Rbc7 33. Nc3  Rb7 34. b3 Rbc7 35. d4 Qg4 36. Rxf6 Qxf3 37. Rxf7+ Rxf7 38. gxf3 Rc7 39. Ne4  Rxc2 40. d5 Rxa2 41. d6 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Mostertman, Johan"] [Black "Hassing, Bert"] [Result "1-0"] [ECO "A13"] [WhiteElo "1810"] [BlackElo "1368"] [PlyCount "79"] [TimeControl "7200"]  1. Nf3 Nf6 2. b3 e6 3. Bb2 Be7 4. c4 b6 5. e3 Bb7 6. Be2 d6 7. Nc3 Nbd7 8. Qc2  Bxf3 9. Bxf3 Rb8 10. Nb5 Ne5 11. Bxe5 dxe5 12. Nxa7 Qd6 13. Nc6 Rc8 14. Nxe7  Qxe7 15. O-O O-O 16. a4 Qc5 17. Qc3 e4 18. Be2 Qg5 19. d4 c5 20. Rfd1 Rfd8 21.  a5 bxa5 22. Rxa5 h5 23. Qe1 h4 24. h3 Nd7 25. b4 Qg6 26. bxc5 Nb8 27. f3 Nc6  28. Rb5 Ne7 29. fxe4 f5 30. Qxh4 Qf6 31. Qxf6 gxf6 32. Bf3 fxe4 33. Bxe4 f5 34.  Bf3 Kh8 35. Ra1 Ng6 36. Ra7 Rb8 37. c6 Rxb5 38. cxb5 Nh4 39. Kf2 Ng6 40. c7 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "2"] [White "Van der Werff, Silvia"] [Black "Qatina, Waheeb"] [Result "1-0"] [ECO "C53"] [WhiteElo "1416"] [BlackElo "1730"] [PlyCount "49"] [TimeControl "7200"]  1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d4 exd4 6. cxd4 Bb6 7. Nc3 Nf6 8.  Bg5 h6 9. Bh4 Bg4 10. d5 Ne5 11. Bb5+ c6 12. dxc6 bxc6 13. Be2 Ng6 14. Bg3 Bc7  15. O-O Qe7 16. Bc4 O-O 17. Re1 Rad8 18. h3 Be6 19. Bxe6 fxe6 20. Qa4 Qd7 21.  Qxa7 Ra8 22. Qe3 Nh5 23. Bh2 e5 24. Red1 Nhf4 25. Nxe5 1-0  

 [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Ernst, Sipke"] [Black "Rupert, Casper"] [Result "1-0"] [ECO "E09"] [WhiteElo "2585"] [BlackElo "2011"] [PlyCount "37"] [TimeControl "7200"]  1. Nf3 e6 2. c4 Nf6 3. d4 d5 4. g3 Be7 5. Bg2 O-O 6. O-O Nbd7 7. Qc2 c6 8. Nbd2  b6 9. e4 Nxe4 10. Nxe4 dxe4 11. Qxe4 Ba6 12. b3 Rc8 13. Re1 Nf6 14. Qc2 c5 15.  dxc5 Bxc5 16. Bb2 Bb7 17. Ng5 Bxg2 18. Bxf6 Bxf2+ 19. Kxg2 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Kodentsov, Grigori"] [Black "Hommes, Elmar"] [Result "1-0"] [ECO "B07"] [WhiteElo "2264"] [BlackElo "1997"] [PlyCount "77"] [TimeControl "7200"]  1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. g4 h6 5. f3 c6 6. a4 e5 7. Nge2 d5 8. exd5  cxd5 9. Be3 Bb4 10. Bg2 O-O 11. O-O Re8 12. Ng3 Qc7 13. Nce2 e4 14. Bf4 Bd6 15.  Bxd6 Qxd6 16. Nf5 Qc7 17. fxe4 Nxe4 18. Bxe4 dxe4 19. Ne3 Nb6 20. b3 h5 21.  gxh5 Qd8 22. Nf4 Qg5+ 23. Kh1 Bh3 24. Rf2 Rac8 25. Qg1 Qxg1+ 26. Rxg1 Rc3 27.  Nd1 Rec8 28. Nxc3 Rxc3 29. Rg3 Rxg3 30. hxg3 Bg4 31. c4 Bd1 32. Rb2 Nd7 33. Kg1  Nf6 34. a5 Ng4 35. b4 e3 36. c5 Bf3 37. b5 g5 38. hxg6 fxg6 39. a6 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Clemens, Adrian"] [Black "Hummel, Joop"] [Result "1/2-1/2"] [ECO "E81"] [WhiteElo "2190"] [BlackElo "1964"] [PlyCount "60"] [TimeControl "7200"]  1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Nge2 e5 7. Bg5 c6 8. Qd2  Nbd7 9. O-O-O b5 10. cxb5 cxb5 11. dxe5 dxe5 12. Nxb5 Ba6 13. Nec3 Qa5 14. Kb1  Rfb8 15. Nd6 Rb4 16. Nd5 Nxd5 17. Qxd5 Rxb2+ 18. Kxb2 Rb8+ 19. Kc2 Qa3 (19...  Qa4+ 20. Kd2 Qb4+ 21. Ke3 Qb6+ 22. Kd2 Qf2+ 23. Kc1 Qb2#) 20. Qxf7+ Kh8 21. Bc1  Qa4+ 22. Qb3 Rxb3 23. axb3 Qa2+ 24. Bb2 Nc5 25. Bxa6 Qxb3+ 26. Kb1 Na4 27. Nc4  Nc3+ 28. Kc1 Bh6+ 29. Nd2 Na2+ 30. Kb1 Nc3+ 1/2-1/2  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Hummel, Paul"] [Black "Balje, Jan"] [Result "1-0"] [ECO "B49"] [WhiteElo "1962"] [BlackElo "2177"] [PlyCount "57"] [TimeControl "7200"]  1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Be3 Qc7 6. Be2 a6 7. O-O Nf6 8.  Nc3 Bb4 9. Nxc6 bxc6 10. Qd4 c5 11. Qd3 Bb7 12. Bf3 Qe5 13. Na4 Bxe4 14. Bxe4  Qxe4 15. Qxe4 Nxe4 16. c3 Ba5 17. f3 Nf6 18. Bxc5 d5 19. Rad1 Nd7 20. Bd6 Nb6  21. Rd4 O-O-O 22. Bb4 Nxa4 23. Bxa5 Nxb2 24. Bxd8 Rxd8 25. Rb4 Nc4 26. Rfb1 Rd7  27. Rb8+ Kc7 28. R1b7+ Kc6 29. Rxd7 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Hartog, Frank"] [Black "Tromp, Pieter"] [Result "0-1"] [ECO "B29"] [WhiteElo "1848"] [BlackElo "2099"] [PlyCount "50"] [TimeControl "7200"]  1. e4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 d5 5. exd5 Nxd5 6. Nxd5 Qxd5 7. c4 Qe4+ 8.  Be3 cxd4 9. Nxd4 e5 10. Nxc6 bxc6 11. Be2 Qxg2 12. Bf3 Bb4+ 13. Bd2 Bxd2+ 14.  Kxd2 Qxf2+ 15. Qe2 Qxe2+ 16. Kxe2 Bb7 17. Rad1 Ke7 18. Rhg1 g6 19. b4 f5 20. h4  Rad8 21. h5 Rxd1 22. Kxd1 Rd8+ 23. Kc2 Kf6 24. hxg6 hxg6 25. Rh1 e4 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Van der Werff, Frank"] [Black "Mostertman, Johan"] [Result "1-0"] [ECO "B01"] [WhiteElo "1866"] [BlackElo "1810"] [PlyCount "39"] [TimeControl "7200"]  1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Nf3 Nxd5 5. h3 Bh5 6. g4 Bg6 7. Ne5 Qd6 8.  Bg2 c6 9. O-O Nd7 10. Nxg6 hxg6 11. Qf3 Qf6 12. Qxf6 N7xf6 13. Na3 Nb6 14. c4  e6 15. c5 Nbd5 16. Nc4 Rd8 17. a3 Be7 18. Bg5 Nf4 19. Bxf4 Rxd4 20. Nd6+ 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Rietveld, Renze"] [Black "Maris, Ivo"] [Result "0-1"] [ECO "B80"] [WhiteElo "2266"] [BlackElo "2009"] [PlyCount "132"] [TimeControl "7200"]  1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 a6 7. f3 b5 8. Qd2  Nbd7 9. g4 h6 10. O-O-O Bb7 11. h4 b4 12. Nce2 d5 13. Bh3 g5 14. Bg2 Rg8 15.  hxg5 hxg5 16. exd5 Nxd5 17. f4 N7b6 18. b3 Rc8 19. Rh7 Qc7 20. Kb1 Nxe3 21.  Bxb7 Nxd1 22. Bc6+ Qxc6 23. Nxc6 Rxc6 24. Qxd1 Nd5 25. f5 Bg7 26. fxe6 fxe6 27.  Qh1 Rc7 28. Qh5+ Rf7 29. Kc1 Nf6 30. Qh2 Rd7 31. Rh3 Nxg4 32. Qb8+ Rd8 33. Qb6  Kf7 34. Rf3+ Bf6 35. Qxb4 Ne5 36. Rf1 Rh8 37. Ng3 Rh3 38. Ne4 Rf3 39. Rxf3 Nxf3  40. Qb7+ Be7 41. Qxa6 g4 42. a4 Rd4 43. Qe2 Ba3+ 44. Kb1 Rxe4 45. Qg2 Bd6 46.  a5 Be5 47. Ka2 Re1 48. b4 Rg1 49. Qf2 Kg6 50. a6 Ra1+ 51. Kb3 Rxa6 52. b5 Nd4+  53. Kc4 Ra2 54. Qf8 Rxc2+ 55. Kd3 Rb2 56. Qg8+ Kf5 57. Qf8+ Kg5 58. b6 g3 59.  Qg8+ Kf4 60. Qf7+ Nf5 61. Qxe6 g2 62. Qc4+ Bd4 63. Qc1+ Kg4 64. Qd1+ Kg3 65.  Qh5 g1=Q 66. Qg5+ Kf2 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Konnen, Timo"] [Black "Van Foreest, Lucas"] [Result "0-1"] [ECO "D00"] [WhiteElo "1775"] [BlackElo "1898"] [PlyCount "34"] [TimeControl "7200"]  1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 e6 6. Bg5 Be7 7. Bd3 Nbd7 8.  O-O O-O 9. Qe1 Nb6 10. Qh4 g6 11. Ne5 Nfd5 12. Ne4 $2 ({  Volgens de analyse van Lucas wint:} 12. Nxf7 Rxf7 13. Rxf7 Kxf7 14. Qxh7+ Ke8  15. Bxg6+ Kd7 16. Nxd5 Nxd5 17. c4 Nb6 18. Rf1 Nxc4 19. Rf7 $18) 12... f6 13.  Bh6 fxe5 14. Ng5 Rxf1+ 15. Rxf1 Nf4 16. g3 Qxd4+ 17. Rf2 Nxd3 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Van Velzen, Martin"] [Black "Van Dijk, Rowan"] [Result "1-0"] [ECO "A37"] [WhiteElo "1885"] [BlackElo "1591"] [PlyCount "101"] [TimeControl "7200"]  1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 e6 6. O-O Nge7 7. a3 O-O 8. Rb1  d5 9. cxd5 exd5 10. b4 Bf5 11. e4 dxe4 12. Nh4 e3 13. Nxf5 exf2+ 14. Kh1 Nxf5  15. bxc5 Rb8 16. Ne4 Re8 17. Nxf2 Qd4 18. Bb2 Qxc5 19. Ne4 Qc4 20. Nf6+ Bxf6  21. Bxf6 Qe6 22. Bc3 b6 23. Rb5 Rbd8 24. Qg4 Nfd4 25. Qxe6 Rxe6 26. Rd5 Red6  27. Rxd6 Rxd6 28. Re1 Kf8 29. Kg1 Nb5 30. Ba1 Nxa3 31. Rc1 Nd4 32. Rc8+ Kg7 33.  Kf2 Rf6+ 34. Kg1 Nab5 35. Bf1 Re6 36. Rd8 Re1 37. Bxd4+ Nxd4 38. Rxd4 a5 39.  Kf2 Rb1 40. Bd3 Rb2 41. Ke3 Kf6 42. h4 b5 43. Rd5 a4 44. Rxb5 Ra2 45. Bc4 Ra1  46. Kf4 a3 47. Rb6+ Kg7 48. Rb7 a2 49. Rxf7+ Kh8 50. Kg5 Rf1 51. Rxf1 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Meeuwsen, Michiel"] [Black "De Wit, Gerard"] [Result "1/2-1/2"] [ECO "C13"] [WhiteElo "1455"] [BlackElo "1818"] [PlyCount "28"] [TimeControl "7200"]  1. d4 Nf6 2. Nc3 d5 3. Bg5 e6 4. Nf3 Be7 5. Bxf6 Bxf6 6. e4 dxe4 7. Nxe4 Be7 8.  Bd3 b6 9. Qe2 Bb7 10. O-O-O Nd7 11. h4 Nf6 12. Neg5 h6 13. Nxf7 Kxf7 14. Ne5+  Kg8 1/2-1/2  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "3"] [White "Bosboom, Ardin"] [Black "Van Os, Ben"] [Result "0-1"] [ECO "A52"] [WhiteElo "1162"] [BlackElo "1671"] [PlyCount "72"] [TimeControl "7200"]  1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nbd2 Qe7 7. e3 Ngxe5  8. Be2 d6 9. O-O Bd7 10. a3 Bc5 11. Ne4 Bb6 12. Bxe5 Nxe5 13. Nc3 Bc6 14. Nxe5  Qxe5 15. Bf3 Qc5 16. Bd5 Bxd5 17. Qxd5 Qxd5 18. Nxd5 Kd7 19. b4 c6 20. Nc3 Rhe8  21. Rad1 a6 22. Na4 Bc7 23. c5 d5 24. Rfe1 Re7 25. f3 f5 26. Kf2 Rae8 27. Nc3  Be5 28. Nb1 Bf6 29. g3 h5 30. h4 g5 31. hxg5 Bxg5 32. f4 Bf6 33. Rd3 h4 34. Nc3  hxg3+ 35. Kxg3 Bh4+ 36. Kxh4 Rg7 0-1  

 [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "4"] [White "Kodentsov, Grigori"] [Black "Ernst, Sipke"] [Result "1-0"] [ECO "A10"] [WhiteElo "2264"] [BlackElo "2585"] [PlyCount "168"] [TimeControl "7200"]  1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. e3 O-O 6. Nge2 d6 7. Rb1 a5 8. a3  Nc6 9. d3 Qe8 10. b4 axb4 11. axb4 Bd7 12. O-O Kh8 13. Qc2 e6 14. Bd2 Rb8 15.  d4 g5 16. b5 Ne7 17. f4 gxf4 18. exf4 Ng4 19. h3 Nf6 20. Be3 Ng6 21. Rbe1 h5  22. h4 Ng4 23. Bc1 Qf7 24. d5 Rbe8 25. Qd3 Kh7 26. Bd2 Rg8 27. Nd4 e5 28. Nf3  Kh8 29. Ng5 Qf6 30. Ne2 exf4 31. Nxf4 Nxf4 32. Bxf4 Rxe1 33. Rxe1 Ra8 34. Bf3  Ra2 35. Bxg4 hxg4 36. Re2 Qa1+ 37. Kg2 Ra3 38. Qd2 Kg8 39. Qe1 Qxe1 40. Rxe1  Bf6 41. Ne6 Ra2+ 42. Kf1 Rc2 43. Nxc7 Rxc4 44. Bxd6 b6 45. Rd1 Kf7 46. h5 Rc2  47. Bf4 Bc3 48. h6 Bb4 49. Rd4 Bf8 50. Rd2 Rc1+ 51. Kg2 Bxh6 52. Bxh6 Rxc7 53.  Be3 Bxb5 54. Bxb6 Rc3 55. Bd4 Ra3 56. Be5 Bd3 57. Bf4 Ke8 58. Kf2 Be4 59. d6  Kd7 60. Rb2 Ra7 61. Ke3 Ke6 62. Rd2 Ra3+ 63. Kd4 Kd7 64. Ke5 Ra5+ 65. Kf6 Ra7  66. Rh2 Kc6 67. Rh8 Kb5 68. Rc8 Bc6 69. Rc7 Ra1 70. Kxf5 Rd1 71. Kxg4 Rd5 72.  Rg7 Be8 73. Kf3 Bc6 74. Kg4 Be8 75. Re7 Bg6 76. Be5 Kc6 77. Kg5 Bd3 78. g4 Be2  79. Kf5 Rd1 80. g5 Kd5 81. Bf4 Bd3+ 82. Kf6 Bb5 83. g6 Rf1 84. g7 Rxf4+ 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "4"] [White "Van Foreest, Jorden"] [Black "Maatman, Nick"] [Result "1-0"] [ECO "A18"] [WhiteElo "2073"] [BlackElo "1993"] [PlyCount "61"] [TimeControl "7200"]  1. c4 Nf6 2. Nc3 e6 3. e4 d6 4. d4 Be7 5. Bd3 c5 6. d5 e5 7. Nge2 O-O 8. O-O  Ne8 9. f4 exf4 10. Bxf4 Nd7 11. Ng3 g6 12. Qd2 Ne5 13. Rae1 a6 14. Be2 Bf6 15.  Nd1 b5 16. Ne3 Bg7 17. b4 cxb4 18. Qxb4 Bd7 19. Rc1 bxc4 20. Nxc4 Rb8 21. Qa3  Nxc4 22. Rxc4 Bb5 23. Rc2 Bxe2 24. Rxe2 Rb6 25. Be3 Rb5 26. Qxa6 Nc7 27. Qc6  Qe7 28. Rc1 Rc8 29. Qxb5 Nxb5 30. Rxc8+ Bf8 31. Bh6 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "4"] [White "Maris, Ivo"] [Black "Dijkstra, Maarten"] [Result "1-0"] [ECO "E94"] [WhiteElo "2009"] [BlackElo "2016"] [PlyCount "65"] [TimeControl "7200"]  1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Na6 8. Be3  Ng4 9. Bg5 f6 10. Bh4 c6 11. d5 Qc7 12. Ne1 Nh6 13. Nd3 f5 14. f3 f4 15. Kh1  Bf6 16. Bf2 c5 17. b4 Nxb4 18. Nb5 Qb8 19. Nxc5 b6 20. Ne6 Bxe6 21. dxe6 Be7  22. Qd2 Na6 23. Rfd1 Rd8 24. Nc3 Nc5 25. Nd5 Qb7 26. Bxc5 dxc5 27. g3 g5 28.  Qc3 Bd6 29. Rg1 Qg7 30. gxf4 exf4 31. Qxg7+ Kxg7 32. Rxg5+ Kh8 33. e5 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "4"] [White "Van Velzen, Martin"] [Black "Kosse, Lukas"] [Result "1-0"] [ECO "A10"] [WhiteElo "1885"] [BlackElo "1530"] [PlyCount "41"] [TimeControl "7200"]  1. c4 Nc6 2. g3 e6 3. Bg2 d5 4. Nf3 Nf6 5. b3 Be7 6. O-O O-O 7. Bb2 dxc4 8.  bxc4 Re8 9. d3 Bd6 10. Nbd2 e5 11. Ng5 Bd7 12. Nge4 Bf8 13. f4 Ng4 14. Qe1 Ne3  15. Qf2 Nxf1 16. Rxf1 f5 17. Ng5 h6 18. Bd5+ Be6 19. Nxe6 Rxe6 20. Bxe6+ Kh8  21. fxe5 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "4"] [White "Mostertman, Johan"] [Black "Roorda, Maarten"] [Result "1-0"] [ECO "C77"] [WhiteElo "1810"] [BlackElo "1745"] [PlyCount "91"] [TimeControl "7200"]  1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 Be7 6. c3 b5 7. Bc2 O-O 8. O-O  d5 9. exd5 Qxd5 10. Ng5 Bg4 11. f3 Bh5 12. d3 h6 13. Ne4 Nxe4 14. dxe4 Bc5+ 15.  Kh1 Qe6 16. Bb3 Qf6 17. a4 b4 18. cxb4 Nxb4 19. Nc3 Rfd8 20. Nd5 Nxd5 21. Bxd5  c6 22. Bc4 a5 23. Bd2 Bd4 24. Rab1 Qe7 25. Rfc1 Kf8 26. Qe1 Qa7 27. Qh4 Bg6 28.  Rd1 Rd6 29. Be3 Rad8 30. Bxd4 Rxd4 31. Qe1 Qc5 32. Be2 Qc2 33. h3 f5 34. Rdc1  Qxa4 35. Qc3 R8d6 36. f4 fxe4 37. fxe5 R6d5 38. Rf1+ Ke8 39. Qg3 Bf7 40. Qxg7  Rd7 41. e6 Qb3 42. Qh8+ Ke7 43. Rxf7+ Kxe6 44. Bg4+ Kxf7 45. Rf1+ Ke7 46. Qf8#  1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.28"] [Round "4"] [White "Van Os, Ben"] [Black "Ten Velde, Jeffrey"] [Result "1-0"] [ECO "C01"] [WhiteElo "1671"] [BlackElo "1761"] [PlyCount "51"] [TimeControl "7200"]  1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bf4 Nf6 5. Bd3 c6 6. Nf3 Bg4 7. Nbd2 Be7 8.  c3 O-O 9. h3 Bh5 10. Qc2 Nbd7 11. g4 Bg6 12. O-O-O Qa5 13. Kb1 Rfe8 14. Rdg1  Bxd3 15. Qxd3 Bf8 16. h4 Ne4 17. Ng5 Ndf6 18. Ndxe4 Nxe4 19. f3 Nf6 20. Be5 Qa6  21. Qc2 h6 22. Bxf6 hxg5 23. hxg5 Re4 24. fxe4 gxf6 25. gxf6 c5 26. e5 1-0  

 [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "5"] [White "Van Foreest, Jorden"] [Black "Kodentsov, Grigori"] [Result "1/2-1/2"] [ECO "E92"] [WhiteElo "2073"] [BlackElo "2264"] [PlyCount "57"] [TimeControl "7200"]  1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. Be3 Ng4 8. Bg5  f6 9. Bh4 g5 10. Bg3 Nh6 11. dxe5 dxe5 12. Qd5+ Kh8 13. Qxd8 Rxd8 14. h4 g4 15.  Nd2 Be6 16. O-O-O Nc6 17. Nb3 b6 18. f3 gxf3 19. gxf3 Nf7 20. Nd5 Bxd5 21. cxd5  Ne7 22. Kb1 Bh6 23. Rhf1 Nd6 24. Bd3 Rg8 25. Rg1 Be3 26. Rge1 Bh6 27. Rg1 Be3  28. Rge1 Bh6 29. Rg1 1/2-1/2  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "5"] [White "Tromp, Pieter"] [Black "Van Velzen, Martin"] [Result "1-0"] [ECO "A42"] [WhiteElo "2099"] [BlackElo "1885"] [PlyCount "45"] [TimeControl "7200"]  1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 e5 5. Nge2 Nc6 6. Be3 Nh6 7. f3 f5 8. d5 Ne7  9. Qd2 Nf7 10. O-O-O O-O 11. Kb1 a6 12. h3 f4 13. Bf2 c5 14. dxc6 Nxc6 15. Nd5  b5 16. Bb6 Qd7 17. cxb5 axb5 18. Nec3 Qb7 19. Bxb5 Kh8 20. Nc7 Qxb6 (20... Rb8  21. N3d5 Nd4 22. Ba6 Qc6 23. Rc1 Qd7) 21. Nxa8 Qb7 22. Bxc6 Qxc6 23. Qd5 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "5"] [White "Hummel, Joop"] [Black "Van der Werff, Frank"] [Result "1-0"] [ECO "A80"] [WhiteElo "1964"] [BlackElo "1866"] [PlyCount "53"] [TimeControl "7200"]  1. d4 f5 2. Nc3 d5 3. Bf4 a6 4. e3 e6 5. Bd3 Nf6 6. Nge2 c5 7. dxc5 Bxc5 8. Nd4  Nc6 9. Nxc6 bxc6 10. Ne2 Qe7 11. Nd4 Bd7 12. Bg3 O-O 13. O-O Ne4 14. Be5 Bb6  15. c4 c5 16. Nf3 Bc6 17. Qe2 g5 18. h3 h6 19. Rac1 Nd6 20. Rfd1 Bb7 21. b3  Rad8 22. Ba1 dxc4 23. bxc4 Bxf3 24. Qxf3 Bc7 25. Qc6 Nf7 26. Bxf5 Bd6 27. Bh7+  1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "5"] [White "Balje, Jan"] [Black "Mostertman, Johan"] [Result "1/2-1/2"] [ECO "E08"] [WhiteElo "2177"] [BlackElo "1810"] [PlyCount "58"] [TimeControl "7200"]  1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Be7 6. Bg2 c6 7. O-O O-O 8. Qc2  Nbd7 9. Bf4 b6 10. Rd1 Bb7 11. Nbd2 Rc8 12. e4 Nh5 13. Be3 dxe4 14. Nxe4 Qc7  15. c5 Ndf6 16. Nfd2 Ba6 17. Rac1 Nd5 18. Nc4 Bxc4 19. Qxc4 Nxe3 20. fxe3 b5  21. Qc2 Rfd8 22. Rf1 h6 23. a4 a6 24. axb5 axb5 25. Ra1 Ra8 26. Qe2 Nf6 27. Qf3  Rxa1 28. Nxf6+ Bxf6 29. Rxa1 e5 1/2-1/2  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "5"] [White "Van Foreest, Lucas"] [Black "Vinke, Maarten"] [Result "1-0"] [ECO "E92"] [WhiteElo "1898"] [BlackElo "2050"] [PlyCount "51"] [TimeControl "7200"]  1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nf6 5. Nf3 O-O 6. Be2 e5 7. d5 Nh5 8. O-O f5  9. b4 Nd7 $2 10. Ng5 $1 Ndf6 11. exf5 $1 Nf4 12. Ne6 Bxe6 13. fxe6 c6 14. Bxf4  exf4 15. Rc1 cxd5 16. cxd5 Rc8 17. Bf3 Qb6 18. a3 a5 19. Qb3 g5 20. Ne4 Nxe4  21. Bxe4 axb4 $4 22. e7 Rfe8 23. Rxc8 Rxc8 24. Qh3 Qc5 25. Bxh7+ Kf7 26. Qe6+ {  Ke8 27. Lg6# Annotatie van Lucas} 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "5"] [White "Abma, Klaas"] [Black "Hommes, Elmar"] [Result "0-1"] [ECO "C41"] [WhiteElo "1853"] [BlackElo "1997"] [PlyCount "84"] [TimeControl "7200"]  1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O c6 7. Re1 Qc7 8. Bg5  h6 9. Bxf6 Nxf6 10. d5 O-O 11. h3 a6 12. a4 a5 13. Qe2 Qb8 14. Rad1 Bd8 15. Kh1  Bb6 16. Rf1 Nh5 17. Qd2 Bc5 18. Ne2 b5 19. axb5 cxb5 20. Bd3 f5 21. exf5 Bxf5  22. g4 Bxg4 23. hxg4 Rxf3 24. gxh5 Qd8 (24... Qc8 {en wint}) 25. Ng3 Qh4+ 26.  Kg2 Raf8 27. Qe2 Bxf2 28. Qxf2 Rxf2+ 29. Rxf2 Rxf2+ 30. Kxf2 Qd4+ 31. Kg2 Qxb2  32. Rf1 Qd4 33. Kh2 Qxd5 34. Nf5 Qe6 35. Bxb5 e4 36. Ba4 Kh7 37. Bb3 d5 38. Nh4  Qg4 39. Nf5 Qxh5+ 40. Kg2 Qg5+ 41. Kh2 Qd2+ 42. Kg1 e3 0-1  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "5"] [White "Hartog, Frank"] [Black "Van der Graaf, Jaap"] [Result "1-0"] [ECO "C02"] [WhiteElo "1848"] [BlackElo "1609"] [PlyCount "39"] [TimeControl "7200"]  1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 Nh6 7. b4 cxd4 8. cxd4  Nf5 9. Bb2 Bd7 10. Be2 Be7 11. Nc3 Nfxd4 12. Nxd4 Nxd4 13. Nxd5 Nc2+ 14. Qxc2  exd5 15. O-O O-O 16. Qd3 Qe6 17. f4 f5 18. Bf3 Bc6 19. b5 Bc5+ 20. Kh1 1-0  

 [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "6"] [White "Kodentsov, Grigori"] [Black "Maris, Ivo"] [Result "1/2-1/2"] [ECO "B85"] [WhiteElo "2264"] [BlackElo "2009"] [PlyCount "43"] [TimeControl "7200"]  1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Be7 8. f4  Nc6 9. Be3 Qc7 10. Kh1 O-O 11. Qe1 e5 12. Nf5 Bxf5 13. exf5 d5 14. fxe5 Qxe5  15. Bf4 Qxf5 16. Rd1 Rfe8 17. Bd3 Qe6 18. Qh4 Ne4 19. Qh5 Nf6 20. Qh4 Ne4 21.  Qh5 Nf6 22. Qh4 1/2-1/2  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "6"] [White "Rietveld, Renze"] [Black "Van Foreest, Lucas"] [Result "1-0"] [ECO "C26"] [WhiteElo "2266"] [BlackElo "1898"] [PlyCount "73"] [TimeControl "7200"]  1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Bc5 5. Bg2 d6 6. d3 Be6 7. Na4 Bb6 8. Nxb6  axb6 9. h3 h6 10. O-O O-O 11. Kh2 Ne7 12. Ng1 c5 13. f4 Ne8 14. f5 Bd7 15. g4  f6 16. h4 Kh7 17. Ne2 g5 18. fxg6+ Kxg6 19. Ng3 Ng7 20. Qd2 Ng8 21. Nf5 Nxf5  22. exf5+ Kh7 23. Bxb7 Ra4 24. c4 Rf7 25. b3 Ra7 26. Be4 Rg7 27. Rg1 Qc8 28.  Qf2 Ne7 29. Bxh6 Kxh6 30. g5+ fxg5 31. hxg5+ Kh7 32. f6+ Bf5 33. Qh4+ Kg8 34.  fxg7 Ng6 35. Bd5+ Be6 36. Qh3 Nf4 37. Qh8+ 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "6"] [White "Den Boer, Paul"] [Black "Balje, Jan"] [Result "1-0"] [ECO "A04"] [WhiteElo "1866"] [BlackElo "2177"] [PlyCount "101"] [TimeControl "7200"]  1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. g3 d6 5. Bg2 g6 6. O-O Bg7 7. d3 Nge7 8. Be3  O-O 9. Qd2 e5 10. Ne1 f5 11. f4 Be6 12. Nf3 Kh8 13. Rae1 Qd7 14. fxe5 Nxe5 15.  Nxe5 Bxe5 16. d4 cxd4 17. Bxd4 Nc6 18. Bxe5+ dxe5 19. Qxd7 Bxd7 20. exf5 gxf5  21. Bxc6 Bxc6 22. Rxe5 f4 23. Rxf4 Rxf4 24. gxf4 Rf8 25. Nd5 Rg8+ 26. Kf2 Rg4  27. h3 Rh4 28. Kg3 Rh6 29. f5 Rd6 30. c4 Kg7 31. h4 b5 32. b3 bxc4 33. bxc4  Bxd5 34. cxd5 Ra6 35. Re2 Ra3+ 36. Kf4 Kf6 37. Re6+ Kf7 38. d6 Rxa2 39. Re7+  Kf6 40. Re6+ Kf7 41. Kg5 Rg2+ 42. Kh6 a5 43. Kxh7 Rh2 44. Re7+ Kf6 45. Kg8 a4  46. Rf7+ Ke5 47. d7 Rd2 48. h5 a3 49. h6 a2 50. h7 Rg2+ 51. Kf8 1-0  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "6"] [White "Van Velzen, Martin"] [Black "Hartog, Frank"] [Result "1/2-1/2"] [ECO "A26"] [WhiteElo "1885"] [BlackElo "1848"] [PlyCount "54"] [TimeControl "7200"]  1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 d6 5. e4 O-O 6. Nge2 e5 7. O-O Nfd7 8. d3  Nc6 9. Rb1 a5 10. a3 f5 11. exf5 gxf5 12. f4 Nf6 13. Nd5 Ne7 14. Nxe7+ Qxe7 15.  fxe5 dxe5 16. d4 Rd8 17. d5 Qc5+ 18. Kh1 Qxc4 19. Bg5 Be6 20. Rc1 Qb5 21. Bxf6  Bxf6 22. Rxc7 Bxd5 23. Bxd5+ Rxd5 24. Qc2 Rd3 25. Rc5 Qd7 26. Qc4+ Kh8 27. Rc7  Qd5+ 1/2-1/2  [Event "Open Drents Weekendtoernooi 2011"] [Site "Assen, Netherlands"] [Date "2011.05.29"] [Round "6"] [White "Mostertman, Johan"] [Black "Pals, Harm"] [Result "1-0"] [ECO "B20"] [WhiteElo "1810"] [BlackElo "1877"] [PlyCount "59"] [TimeControl "7200"]  1. e4 c5 2. a3 Nc6 3. b4 cxb4 4. axb4 Nxb4 5. d4 Qc7 6. c3 Nc6 7. Na3 a6 8. Nf3  g6 9. Bc4 Bg7 10. Bd2 d6 11. O-O Nf6 12. Re1 O-O 13. Qc1 Bd7 14. Ba2 Rac8 15.  Nc4 b5 16. Ne3 Qa7 17. Qb1 Rb8 18. Nd5 e6 19. Nxf6+ Bxf6 20. Be3 Qb7 21. Qd3  Rfc8 22. Bg5 Bg7 23. Nd2 h6 24. Bh4 g5 25. Bg3 e5 26. Nb3 exd4 27. Bxd6 dxc3  28. Nc5 Qa7 29. Bxf7+ Kh8 30. Rxa6 1-0