[Event "Maastricht Limburg op-B 5th"]
[Site "Maastricht"]
[Date "2011.06.13"]
[Round "7"]
[White "Gallardo Banez, Alfonso"]
[Black "Gerritsen, Diederik"]
[Result "1/2-1/2"]
[ECO "A26"]
[WhiteElo "1915"]
[BlackElo "1840"]
[PlyCount "31"]
[EventDate "2011.06.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 e5 5. e4 Nc6 6. Nge2 d6 7. 0-0 0-0 8. h3 Be6 9. d3 Ne8 10. Be3 Nd4 11. Kh2 h6 12. f4 f5 13. Qd2 Kh7 14. Rab1 Rb8 15. b4 b6 16. b5 1/2-1/2

[Event "Maastricht Limburg op-B 5th"]
[Site "Maastricht"]
[Date "2011.06.13"]
[Round "6"]
[White "Gerritsen, Diederik"]
[Black "De Bruin, Joost"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "1840"]
[BlackElo "1778"]
[PlyCount "75"]
[EventDate "2011.06.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 Qb6 8. Nf3 cxd4 9. cxd4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 Qb4 12. 0-0 Qxd2 13. Nxd2 0-0 14. Rac1 f6 15. f4 a6 16. a3 Nb6 17. b4 Bd7 18. Nb3 Na4 19. Rc2 fxe5 20. dxe5 b5 21. Rfc1 Rac8 22. g3 Nb8 23. Nc5 Nxc5 24. Rxc5 Rxc5 25. Rxc5 Rc8 26. Rxc8+ Bxc8 27. Nd4 g6 28. g4 Kf7 29. Kf2 Bd7 30. Ke3 Ke7 31. h4 Nc6 32. Nxc6+ Bxc6 33. f5 gxf5 34. gxf5 exf5 35. Bxf5 h6 36. Bc8 Bd7 37. Bxd7 Kxd7 38. Kd4 1-0

[Event "Maastricht Limburg op-B 5th"]
[Site "Maastricht"]
[Date "2011.06.12"]
[Round "4"]
[White "Gerritsen, Diederik"]
[Black "Visser, Sebastiaan"]
[Result "1/2-1/2"]
[ECO "D26"]
[WhiteElo "1840"]
[BlackElo "1904"]
[PlyCount "82"]
[EventDate "2011.06.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 dxc4 5. Bxc4 Nf6 6. Nc3 e6 7. Nf3 b6 8. 0-0 Bb7 9. Ne5 Nbd7 10. Qb3 Be7 11. Re1 a6 12. Bg5 b5 13. Bxe6 fxe6 14. Qxe6 Nxe5 15. Qxe5 b4 16. Bxf6 gxf6 17. Qh5+ Kf8 18. Qh6+ Kf7 19. Qh5+ Kg7 20. Ne4 Qd5 21. Qg4+ Kf8 22. Rad1 Rg8 23. Qf4 Rg6 24. f3 Re8 25. Ng3 Bd6 26. Rxe8+ Kxe8 27. Qe3+ Kf7 28. Re1 Bc6 29. Ne4 f5 30. Nxd6+ Qxd6 31. Qd3 Bd7 32. Re5 Kg7 33. Qe3 Kf8 34. d5 Qb6 35. Kf2 f4 36. Qxb6 Rxb6 37. Re4 Rd6 38. Rxf4+ Kg7 39. Rxb4 Rxd5 40. Rb6 a5 41. a3 a4 1/2-1/2

[Event "Maastricht Limburg op-B 5th"]
[Site "Maastricht"]
[Date "2011.06.12"]
[Round "5"]
[White "Sanen, Erwin"]
[Black "Gerritsen, Diederik"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "1867"]
[BlackElo "1840"]
[PlyCount "80"]
[EventDate "2011.06.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. e3 axb5 6. Bxb5 Bb7 7. Bc4 e6 8. Nc3 g6 9. Nf3 Bg7 10. 0-0 0-0 11. Qb3 Ba6 12. Rd1 Bxc4 13. Qxc4 Na6 14. dxe6 fxe6 15. Rd6 Qc8 16. Ne5 Rd8 17. e4 Qc7 18. Nb5 Qb7 19. f3 Bf8 20. Rd1 d5 21. exd5 exd5 22. Qf1 Rac8 23. a4 d4 24. Bg5 Bg7 25. Qc4+ Qd5 26. Rac1 Qxc4 27. Nxc4 h6 28. Bh4 g5 29. Bf2 Nb4 30. b3 Nfd5 31. Ncd6 Rc6 32. Nb7 Rdc8 33. Na7 Nc3 34. Rxc3 dxc3 35. Nxc6 Rxc6 36. Nxc5 c2 37. Rf1 Bb2 38. Be3 Nd5 39. Bd2 Rxc5 40. b4 Nxb4 0-1

[Event "Maastricht Limburg op-B 5th"]
[Site "Maastricht"]
[Date "2011.06.11"]
[Round "2"]
[White "Gerritsen, Diederik"]
[Black "Meyes, Richard"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "1840"]
[BlackElo "1749"]
[PlyCount "56"]
[EventDate "2011.06.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 Nbd7 10. 0-0-0 0-0 11. g4 b5 12. h4 b4 13. Nd5 Bxd5 14. exd5 Nb6 15. Bxb6 Qxb6 16. h5 h6 17. g5 Ne4 18. Qg2 Bxg5+ 19. Kb1 Nf2 20. Bd3 Nxd1 21. Rxd1 a5 22. Qg4 Bf6 23. Qf5 Rfe8 24. Nd2 e4 25. Nxe4 Rxe4 26. Qxe4 Qd4 27. Qxd4 Bxd4 28. Re1 Kf8 1/2-1/2

[Event "Maastricht Limburg op-B 5th"]
[Site "Maastricht"]
[Date "2011.06.11"]
[Round "3"]
[White "Sluiter, Jan"]
[Black "Gerritsen, Diederik"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "1859"]
[BlackElo "1840"]
[PlyCount "29"]
[EventDate "2011.06.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. f4 Nge7 7. Nf3 0-0 8. Be3 Nd4 9. 0-0 d6 10. Qd2 Nec6 11. Nd1 Nxf3+ 12. Rxf3 e5 13. f5 Bd7 14. Bh6 Qf6 15. Bg5 1-0

[Event "Maastricht Limburg op-B 5th"]
[Site "Maastricht"]
[Date "2011.06.10"]
[Round "1"]
[White "Henrotte, Nils"]
[Black "Gerritsen, Diederik"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1963"]
[BlackElo "1840"]
[PlyCount "111"]
[EventDate "2011.06.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c3 d5 3. Bf4 c5 4. e3 Nc6 5. Nf3 Bg4 6. Nbd2 e6 7. Qa4 Bxf3 8. Nxf3 Qb6 9. Qb3 Be7 10. Qxb6 axb6 11. Bc7 Bd8 12. Bxd8 Kxd8 13. Bb5 Ke7 14. a3 Na5 15. Nd2 c4 16. Ba4 Rhc8 17. Bc2 b5 18. 0-0 Nc6 19. Rfe1 Ra7 20. e4 Rca8 21. Rab1 Rc8 22. e5 Nd7 23. f4 g6 24. Re3 Raa8 25. Kf2 Rg8 26. Rg1 Rg7 27. g4 Rag8 28. Nf3 f6 29. exf6+ Kxf6 30. Rge1 Nd8 31. h4 Re8 32. Ne5 Nxe5 33. g5+ Kf7 34. fxe5 Ke7 35. Rf3 Rf7 36. Rf6 Ref8 37. Ke3 Nc6 38. Ref1 Nb8 39. a4 Nd7 40. Rxf7+ Rxf7 41. Rxf7+ Kxf7 42. axb5 b6 43. b3 cxb3 44. Bxb3 Nf8 45. c4 dxc4 46. Bxc4 Ke7 47. Ke4 Nd7 48. d5 Nc5+ 49. Kd4 exd5 50. Kxd5 Kd7 51. Bf1 Na4 52. Bh3+ Ke8 53. Kc6 Kf7 54. Kd6 Nc5 55. e6+ Ke8 56. Bg2 1-0

