[Event "Leiden"]
[Site "Leiden"]
[Date "1937.05.09"]
[Round "3"]
[White "Droste, J."]
[Black "Bosscha, G."]
[Result "1-0"]
[ECO "C90"]
[PlyCount "69"]
[EventDate "1937.05.08"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Bg4 9. d3 Na5 10. Bc2 c5 11. Nbd2 0-0 12. Nf1 Qc7 13. Ng3 Rac8 14. h3 Bd7 15. Bg5 h6 16. Be3 Nh7 17. Rc1 Nc6 18. Qd2 Qd8 19. d4 cxd4 20. cxd4 Bf6 21. Red1 exd4 22. Nxd4 Ne5 23. b3 Ng6 24. Bb1 Rxc1 25. Rxc1 Bxd4 26. Qxd4 Be6 27. f4 Qh4 28. Nf5 Bxf5 29. exf5 Ne7 30. Bf2 Qh5 31. Qxd6 Nxf5 32. Qe5 g6 33. Bxf5 Qxf5 34. Qxf5 gxf5 35. Rc6 1-0

[Event "Leiden"]
[Site "Leiden"]
[Date "1937.05.09"]
[Round "2"]
[White "Euwe, Max"]
[Black "Bosscha, G."]
[Result "1-0"]
[ECO "C91"]
[PlyCount "87"]
[EventDate "1937.05.08"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. d4 Bg4 10. d5 Na5 11. Bc2 Nb7 12. h3 Bh5 13. Be3 Nd7 14. Nbd2 Kh8 15. g4 Bg6 16. Nf1 Na5 17. b3 Nb7 18. Ng3 Re8 19. Kg2 Qc8 20. h4 f6 21. h5 Bf7 22. Nf5 Nf8 23. Qd2 c6 24. Bh6 g6 25. hxg6 Nxg6 26. Rh1 Bf8 27. Kg3 Nf4 28. Bxf4 exf4+ 29. Qxf4 Bg6 30. N3h4 Bxf5 31. gxf5 Bg7 32. c4 bxc4 33. bxc4 cxd5 34. exd5 Qc5 35. Ba4 Qa3+ 36. Bb3 Nc5 37. f3 Rad8 38. Qg4 Qb2 39. Ng6+ Kg8 40. Nf4 Qc3 41. Ne6 Rd7 42. Qh5 Rxe6 43. fxe6 Re7 44. Qxh7+ 1-0

[Event "Leiden"]
[Site "Leiden"]
[Date "1937.05.08"]
[Round "1"]
[White "Bosscha, G."]
[Black "Van Hoorn, Petrus Franciscus"]
[Result "1-0"]
[ECO "C82"]
[PlyCount "67"]
[EventDate "1937.05.08"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 0-0 11. Re1 Nc5 12. Bc2 Bg4 13. h3 Bh5 14. Nf1 Qd7 15. Ng3 Bg6 16. Bxg6 hxg6 17. Be3 Ne6 18. Qc2 Rfd8 19. Rad1 Qc8 20. h4 Na5 21. h5 gxh5 22. Nxh5 Nc4 23. Bc1 c5 24. Ng3 g6 25. Qe2 Rd7 26. b3 Na5 27. Nh2 d4 28. Ng4 dxc3 29. Rxd7 Qxd7 30. Qf3 Rf8 31. Ne4 Nd4 32. Nef6+ Bxf6 33. Nxf6+ Kg7 34. Qe3 1-0

[Event "NED Team-ch 1932/33 relegation"]
[Site "Netherlands"]
[Date "1933.06.25"]
[Round "2.2"]
[White "Bosscha, G."]
[Black "Muhring, Willem Jan"]
[Result "0-1"]
[ECO "B24"]
[PlyCount "60"]
[EventDate "1933.06.18"]
[EventType "team"]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Leiden LSG"]
[BlackTeam "Rotterdam NRSV"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 e6 6. d3 Nge7 7. Be3 Nd4 8. 0-0 Nec6 9. Rc1 Qa5 10. Nf4 b5 11. a3 d6 12. Nb1 Ne7 13. c3 Ndc6 14. h4 h5 15. d4 cxd4 16. cxd4 0-0 17. b4 Qd8 18. Nc3 a6 19. Nfe2 Bb7 20. Qd2 Kh7 21. f4 d5 22. f5 exf5 23. exf5 Nxf5 24. Rxf5 gxf5 25. Nf4 Re8 26. Nxh5 Rxe3 27. Nxg7 Rxc3 28. Rxc3 Kxg7 29. Qf4 Qf6 30. Bxd5 Nxd4 0-1

[Event "Den Haag DD Opgaven Toernooi-B"]
[Site "Gravenhage"]
[Date "1922.??.??"]
[Round "4"]
[White "Goedhart, Gert Jan"]
[Black "Bosscha, G."]
[Result "1/2-1/2"]
[ECO "C67"]
[PlyCount "113"]
[EventDate "1922.12.23"]
[EventType "tourn"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Rd1+ Ke8 10. Nc3 h6 11. b3 Bb4 12. Ne4 Be6 13. c4 a5 14. g4 Ne7 15. Nd4 Bxg4 16. f3 Bf5 17. a3 Bxe4 18. axb4 Bg6 19. Rxa5 Rd8 20. Rd2 Nf5 21. Nxc6 Rxd2 22. Bxd2 Kd7 23. Nd4 Nxd4 24. Rd5+ Ke6 25. Rxd4 Ra8 26. Rd5 Ra3 27. f4 Rxb3 28. Rb5 Be4 29. Kf2 Rf3+ 30. Kg1 Rd3 31. Be1 Kf5 32. e6+ Kf6 33. Re5 Bc6 34. e7 Be8 35. Re2 Kf5 36. Re5+ Kxf4 37. Rc5 c6 38. b5 f5 39. bxc6 bxc6 40. Ra5 Rd7 41. Bb4 Bh5 42. Ra8 Rd4 43. Bc3 Rxc4 44. Bxg7 Rc1+ 45. Kf2 Rc2+ 46. Kf1 Rc1+ 47. Kf2 Rc2+ 48. Kf1 Rxh2 49. Bxh6+ Kf3 50. Ra3+ Ke4 51. Kg1 Re2 52. Kf1 Kd5 53. Rh3 Rxe7 54. Rxh5 Rf7 55. Ke2 c5 56. Kd3 c4+ 57. Kc3 1/2-1/2

[Event "Den Haag DD Opgaven Toernooi-B"]
[Site "Gravenhage"]
[Date "1922.??.??"]
[Round "2"]
[White "Key, G."]
[Black "Bosscha, G."]
[Result "1/2-1/2"]
[ECO "A45"]
[PlyCount "106"]
[EventDate "1922.12.23"]
[EventType "tourn"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. g3 Nf6 3. Bg2 e6 4. Nh3 c5 5. c3 Nc6 6. 0-0 Be7 7. dxc5 Bxc5 8. Nd2 0-0 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 Qxd1 12. Rxd1 e5 13. Ng5 h6 14. Nf3 Bg4 15. Re1 f6 16. Nd2 Rad8 17. Nb3 Bb6 18. Be3 Bxe3 19. Rxe3 Rd6 20. f3 Be6 21. Nc5 Bc8 22. Rd3 Rfd8 23. Rad1 Rxd3 24. Rxd3 Rxd3 25. Nxd3 Ne7 26. Nb4 Kf7 27. Kf2 Ke6 28. a3 Kd6 29. Ke3 f5 30. Bc2 g5 31. c4 f4+ 32. gxf4 exf4+ 33. Kd4 b6 34. Be4 a5 35. Nd5 Nc6+ 36. Kc3 Ne5 37. Nxb6 Be6 38. Kd4 Nf7 39. c5+ Kc7 40. Bd5 Bxd5 41. Nxd5+ Kc6 42. b4 axb4 43. axb4 Kb5 44. Ne7 h5 45. Nd5 Nd8 46. Nc3+ Kxb4 47. Nd5+ Kb5 48. Nf6 Ne6+ 49. Ke5 Nxc5 50. Kf5 g4 51. Kxf4 gxf3 52. Kxf3 Kc6 53. Nxh5 Kd6 1/2-1/2

[Event "Den Haag DD Opgaven Toernooi-B"]
[Site "Gravenhage"]
[Date "1922.??.??"]
[Round "1"]
[White "Van Trotsenburg, Boudewijn"]
[Black "Bosscha, G."]
[Result "1-0"]
[ECO "C77"]
[PlyCount "45"]
[EventDate "1922.12.23"]
[EventType "tourn"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 Bc5 6. c3 b5 7. Bc2 d5 8. exd5 Nxd5 9. h3 0-0 10. 0-0 h6 11. d4 exd4 12. cxd4 Bb6 13. Nc3 Ndb4 14. Bb1 Be6 15. a3 Nd5 16. Be3 Nf6 17. Qd2 Re8 18. Rd1 Bd5 19. Ne5 Na5 20. Nxd5 Nxd5 21. Qd3 Qf6 22. Qh7+ Kf8 23. Nd7+ 1-0

[Event "Den Haag DD Opgaven Toernooi-B"]
[Site "Gravenhage"]
[Date "1922.??.??"]
[Round "3"]
[White "Van der Veen, H."]
[Black "Bosscha, G."]
[Result "1-0"]
[ECO "D02"]
[PlyCount "61"]
[EventDate "1922.12.23"]
[EventType "tourn"]
[EventRounds "4"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 e6 4. e3 Bd6 5. Nbd2 Bxf4 6. exf4 c5 7. dxc5 Qc7 8. g3 Qxc5 9. Bd3 Nc6 10. c3 0-0 11. 0-0 b5 12. Ne5 Bb7 13. Qe2 a6 14. g4 d4 15. Nb3 Qd5 16. c4 bxc4 17. Bxc4 Qd6 18. f3 Rfd8 19. Rad1 Rac8 20. Rfe1 Qc7 21. Nxf7 Kxf7 22. Bxe6+ Kf8 23. Bxc8 Qxc8 24. Nc5 Re8 25. Qc4 Re3 26. Ne6+ Ke7 27. Nxd4 Rxe1+ 28. Rxe1+ Kd7 29. Qf7+ Kd6 30. Nf5+ Kc5 31. Qb3 1-0

[Event "Alekhine sim "]
[Site "Leiden"]
[Date "1921.11.11"]
[Round "?"]
[White "Alekhine, Alexander"]
[Black "Bosscha, G."]
[Result "1-0"]
[ECO "C01"]
[PlyCount "51"]
[EventDate "1921.11.11"]
[EventType "simul"]
[EventCountry "NED"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. exd5 exd5 5. Bg5 Be7 6. Bd3 Bg4 7. Nge2 Bxe2 8. Qxe2 0-0 9. 0-0-0 c6 10. Rhe1 Bd6 11. Qf3 Nbd7 12. Qh3 h6 13. Bxh6 Qc7 14. Be3 Rfe8 15. g4 Nf8 16. g5 Ne4 17. Nxe4 dxe4 18. Bc4 b5 19. Bb3 a5 20. g6 Nxg6 21. Rg1 a4 22. Rxg6 axb3 23. Rxg7+ Kxg7 24. Qh6+ Kg8 25. Rg1+ Bg3 26. Bf4 1-0

[Event "NED-ch04 B"]
[Site "Nijmegen"]
[Date "1921.08.04"]
[Round "5"]
[White "Straat, Evert"]
[Black "Bosscha, G."]
[Result "0-1"]
[ECO "D12"]
[PlyCount "82"]
[EventDate "1921.07.31"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 Bf5 5. Nc3 e6 6. Bd3 Bg6 7. 0-0 Nbd7 8. Qe2 dxc4 9. Bxc4 Be7 10. Rd1 Qc7 11. Bd2 0-0 12. Rac1 Nb6 13. Bb3 Rfe8 14. e4 Rad8 15. Bg5 a6 16. Bh4 h6 17. Bg3 Qc8 18. Ne5 Bh5 19. f3 Nbd7 20. Nc4 b5 21. Nd6 Bxd6 22. Bxd6 Qb7 23. e5 Nd5 24. Ne4 f5 25. Nc5 Nxc5 26. Rxc5 Rc8 27. Rdc1 Red8 28. Qc2 Be8 29. Bxd5 exd5 30. Qxf5 Qf7 31. Qg4 Bd7 32. Qg3 Re8 33. f4 Re6 34. Rf1 Rg6 35. Qc3 Qf5 36. Qf3 Re8 37. Kh1 h5 38. Rc3 h4 39. Qf2 Qe4 40. Re1 Rxg2 41. Qxh4 Re2+ 0-1

[Event "Netherlands Tour Capablanca"]
[Site "Netherlands"]
[Date "1911.09.05"]
[Round "?"]
[White "Capablanca, Jose Raul"]
[Black "Bosscha, G."]
[Result "1-0"]
[ECO "C30"]
[PlyCount "75"]
[EventDate "1911.09.04"]
[EventType "simul"]
[EventRounds "1"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. b4 Bb6 5. Bb2 Bg4 6. fxe5 dxe5 7. Bxe5 Nf6 8. Nc3 Nbd7 9. Bg3 Qe7 10. Bd3 Qxb4 11. h3 Bh5 12. Rb1 Qe7 13. Bf2 Nc5 14. Qe2 Rd8 15. 0-0 0-0 16. Kh1 Bg6 17. Bxc5 Bxc5 18. Rxb7 Nh5 19. Kh2 Nf4 20. Qe1 Bb6 21. Bc4 Qd6 22. e5 Qc6 23. Ba6 Bxc2 24. Qh4 Ng6 25. Qc4 Qe8 26. d4 Bxd4 27. Qxc7 Nxe5 28. Nxd4 Rxd4 29. Nb5 Rd2 30. Nd6 Qe6 31. Nxf7 Rxg2+ 32. Kxg2 Qd5+ 33. Kg1 Qd4+ 34. Rf2 Nf3+ 35. Kh1 Qd1+ 36. Rf1 Qd4 37. Bc4 Be4 38. Ne5+ 1-0

[Event "Netherlands Tour Marshall"]
[Site "Netherlands"]
[Date "1911.05.09"]
[Round "?"]
[White "Marshall, Frank James"]
[Black "Bosscha, G."]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "61"]
[EventDate "1911.04.12"]
[EventType "simul"]
[EventRounds "1"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. c4 dxe4 4. Nc3 Bb4 5. f3 c6 6. fxe4 Qh4+ 7. Kd2 Qxe4 8. Nf3 c5 9. Bd3 Qg4 10. Kc2 Bxc3 11. bxc3 Nf6 12. Qe2 cxd4 13. h3 Qh5 14. cxd4 Nc6 15. Bd2 Qxf3 16. Qxf3 Nxd4+ 17. Kc3 Nxf3 18. gxf3 b6 19. Rhg1 g6 20. Bg5 Nh5 21. Be4 Rb8 22. Rad1 f6 23. Bc6+ Kf7 24. Bc1 e5 25. Rd6 Be6 26. Rgd1 Nf4 27. Bxf4 exf4 28. Bd7 Bxd7 29. Rxd7+ Ke6 30. R7d6+ Ke7 31. Rd7+ 1/2-1/2

