[Event "Amsterdam Science Park op-C 3rd"]
[Site "Amsterdam"]
[Date "2013.07.11"]
[Round "6"]
[White "Van der Maas, Johan"]
[Black "Bulthuis, Jelle"]
[Result "0-1"]
[ECO "D81"]
[WhiteElo "1655"]
[BlackElo "1786"]
[PlyCount "78"]
[EventDate "2013.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Qb3 dxc4 5. Qxc4 Bg7 6. e4 Nc6 7. Nf3 Bg4 8. d5 Bxf3 9. dxc6 b5 10. Qd3 Qxd3 11. Bxd3 Bxg2 12. Rg1 b4 13. Nb5 0-0-0 14. Nxa7+ Kb8 15. Rxg2 Rxd3 16. Be3 Nxe4 17. Ke2 Rhd8 18. Rb1 f5 19. Nb5 R3d5 20. a4 Nd2 21. Rd1 Nc4 22. Rxd5 Rxd5 23. b3 Nxe3 24. fxe3 Rc5 25. Rg1 Rxc6 26. Rd1 Be5 27. h3 Rc2+ 28. Rd2 Rxd2+ 29. Kxd2 c6 30. Nd4 Bxd4 31. exd4 g5 32. Ke3 h5 33. Kf3 Kb7 34. Ke3 Kb6 35. Kd3 g4 36. hxg4 fxg4 37. Ke3 c5 38. dxc5+ Kxc5 39. Kf4 Kb6 0-1

[Event "Amsterdam Science Park op-C 3rd"]
[Site "Amsterdam"]
[Date "2013.07.07"]
[Round "2"]
[White "Veenstra, Frits"]
[Black "Van der Maas, Johan"]
[Result "1-0"]
[ECO "D48"]
[WhiteElo "1733"]
[BlackElo "1655"]
[PlyCount "85"]
[EventDate "2013.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. e4 Bb7 10. 0-0 c5 11. d5 c4 12. Bc2 Bc5 13. dxe6 fxe6 14. Qe2 0-0 15. Be3 Qb6 16. Rfe1 Ng4 17. Bxc5 Qxc5 18. h3 Nge5 19. Nxe5 Nxe5 20. Rad1 Rf6 21. Qe3 Qc6 22. Rd2 Raf8 23. f3 Qe8 24. Qg5 Qb8 25. Rf1 Rg6 26. Qe3 Rg3 27. Rdf2 Qd8 28. Kh2 Rg6 29. Rd2 Qc7 30. Kh1 Rd8 31. Rfd1 Nd3 32. Bxd3 cxd3 33. Rxd3 Rxd3 34. Qxd3 Rf6 35. Qd8+ Qxd8 36. Rxd8+ Rf8 37. Rxf8+ Kxf8 38. a3 Ke7 39. e5 Bc6 40. Kg1 Kf7 41. Kf2 Kg6 42. Ne2 Kf5 43. Nd4+ 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2001.10.17"]
[Round "6"]
[White "Stavast, Dick"]
[Black "Van der Maas, Johan"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2038"]
[BlackElo "1639"]
[PlyCount "45"]
[EventDate "2001.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c6 3. Bg5 d5 4. Nbd2 Nbd7 5. e3 e6 6. Bd3 Be7 7. c3 0-0 8. Qe2 Re8 9. h4 Qb6 10. 0-0-0 a5 11. g4 Nf8 12. Bxf6 Bxf6 13. g5 Bd8 14. Ne5 Qc7 15. Rdg1 g6 16. h5 b6 17. Rh3 Re7 18. Rgh1 Kg7 19. f4 c5 20. Qh2 f6 21. hxg6 fxe5 22. Rxh7+ Kg8 23. Rh8+ 1-0

[Event "corr"]
[Site "corr"]
[Date "1994.??.??"]
[Round "?"]
[White "Van der Maas, Johan"]
[Black "Thaler, Toni"]
[Result "0-1"]
[ECO "A68"]
[PlyCount "48"]
[EventDate "1994.04.04"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 0-0 6. f4 d6 7. Be2 e6 8. Nf3 exd5 9. cxd5 b5 10. e5 Nfd7 11. Nxb5 dxe5 12. 0-0 e4 13. Ng5 Nf6 14. d6 Nc6 15. Be3 h6 16. Nxe4 Nxe4 17. Qd5 Qe8 18. Nc7 Nc3 19. bxc3 Qxe3+ 20. Kh1 Rb8 21. Bb5 Na5 22. Rf3 Bb7 23. Qxb7 Qxc3 24. Rxc3 Nxb7 0-1

