[Event "Netherlands Tour Marshall"]
[Site "Netherlands"]
[Date "1911.05.20"]
[Round "?"]
[White "Marshall, Frank James"]
[Black "Heemskerk, Jan Frederik"]
[Result "0-1"]
[ECO "C21"]
[PlyCount "62"]
[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 e5 2. d4 exd4 3. Nf3 Bc5 4. Bc4 d6 5. 0-0 Bg4 6. h3 Bh5 7. c3 Nc6 8. g4 Bg6 9. cxd4 Bb6 10. Nc3 Nge7 11. Bg5 Qd7 12. Re1 h5 13. Nd5 hxg4 14. Nh4 g3 15. Nxb6 Qxh3 16. Qf3 gxf2+ 17. Qxf2 axb6 18. Re3 Qg4+ 19. Rg3 Qh5 20. d5 Ne5 21. Bb5+ c6 22. dxc6 bxc6 23. Be2 Qh7 24. Bxe7 Kxe7 25. Nxg6+ fxg6 26. Qg2 Raf8 27. Rf1 Rxf1+ 28. Bxf1 Qh6 29. Rh3 Qxh3 30. Qg5+ Ke8 31. Bxh3 Nf3+ 0-1

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.13"]
[Round "15"]
[White "Meiners, Willem Barend Hendr"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C37"]
[PlyCount "91"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Bc4 d5 6. Bxd5 gxf3 7. Qxf3 Nf6 8. 0-0 Nxd5 9. exd5 Bd6 10. Nc3 Rg8 11. Bxf4 Bg4 12. Qe4+ Kd7 13. Bxd6 cxd6 14. Rxf7+ Kc8 15. Nb5 Nd7 16. Nxd6+ Kc7 17. Nb5+ Kb6 18. a4 a5 19. Qf4 Rg6 20. Re1 Nf6 21. d6 Bh3 22. g3 Nd5 23. Qf3 Qg5 24. c4 Qd2 25. Qf2 Qxf2+ 26. Kxf2 Rf6+ 27. Rxf6 Nxf6 28. Re7 Rf8 29. Ke2 h5 30. Kd3 Nd7 31. c5+ Kc6 32. Kc4 Bf1+ 33. Kb3 Rf3+ 34. Nc3 Bh3 35. Rh7 Bg4 36. Kc4 Rxc3+ 37. Kxc3 b6 38. b4 axb4+ 39. Kxb4 bxc5+ 40. dxc5 Kd5 41. Rg7 Kc6 42. Rg5 Nb8 43. h3 Be2 44. Kc3 Nd7 45. Rf5 Nxc5 46. Rxc5+ 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.03"]
[Round "1"]
[White "Heemskerk, Jan Frederik"]
[Black "Speijer, Abraham"]
[Result "0-1"]
[ECO "C68"]
[PlyCount "64"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Bg4 6. h3 Bxf3 7. Qxf3 Bd6 8. d3 Ne7 9. Bd2 Qd7 10. Ne2 c5 11. Nc3 Nc6 12. Nd5 Nd4 13. Qd1 0-0 14. c3 Ne6 15. Qg4 Kh8 16. 0-0-0 b5 17. f4 exf4 18. Bxf4 Bxf4+ 19. Nxf4 b4 20. c4 Qa4 21. Nxe6 fxe6 22. Kb1 Rf2 23. Rc1 Raf8 24. Rhe1 Qd7 25. Rcd1 Qd4 26. Re2 g6 27. Rdd2 Rf1+ 28. Kc2 Qd7 29. d4 Qa4+ 30. Kd3 Qxa2 31. dxc5 Rd8+ 32. Ke3 Qb3+ 0-1

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "9"]
[White "Brown, Fred1111"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C70"]
[PlyCount "55"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 5. 0-0 d6 6. d4 exd4 7. Nxd4 Bxd4 8. Qxd4 Qf6 9. Bxc6+ bxc6 10. Qc4 Ne7 11. Nc3 Be6 12. Qd3 Ng6 13. f4 Qh4 14. Qd4 Ne7 15. Be3 0-0 16. f5 c5 17. Qd2 f6 18. fxe6 Qg4 19. Nd5 Qxe6 20. Nxc7 Qxe4 21. Nxa8 Rxa8 22. Rae1 Qc6 23. Kh1 d5 24. Bxc5 Qxc5 25. Rxe7 Rb8 26. Rfe1 Rxb2 27. Qe3 Qxc2 28. Qe6+ 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "11"]
[White "Duras, Oldrich"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C49"]
[PlyCount "79"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. 0-0 0-0 6. d3 d6 7. h3 Ne7 8. Bg5 Bxc3 9. bxc3 Ng6 10. Qd2 h6 11. Be3 Be6 12. Kh2 c6 13. Ba4 d5 14. exd5 Bxd5 15. Ne1 Nh5 16. g3 f5 17. Qe2 Nf6 18. c4 Bf7 19. Ng2 Ne7 20. Bd2 e4 21. Bc3 Bh5 22. Qe3 Ng6 23. Rab1 Qc7 24. Qc5 Bf3 25. Ne3 Be2 26. Rfe1 exd3 27. Bxf6 Rxf6 28. Nd5 Qe5 29. Nxf6+ Qxf6 30. cxd3 Bxd3 31. Rxb7 f4 32. Bxc6 fxg3+ 33. fxg3 Rc8 34. Bd5+ Kh7 35. Qxc8 Qf2+ 36. Bg2 Qxe1 37. Qd7 Qc3 38. Rb3 Qxc4 39. Qxd3 Qa4 40. Rb2 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "4"]
[White "Heemskerk, Jan Frederik"]
[Black "De Soyres, John"]
[Result "1-0"]
[ECO "A18"]
[PlyCount "99"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 Nf6 3. e4 Bb4 4. e5 Ng8 5. Nf3 d5 6. d4 Ne7 7. Be3 Nbc6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bd2 Nb6 11. Bb5 0-0 12. a3 Be7 13. Ne2 Bd7 14. Bd3 f6 15. Rc1 Be8 16. Qc2 f5 17. h3 h6 18. Rd1 Qd7 19. Be3 Rd8 20. g4 Qd5 21. gxf5 Qxf3 22. Be4 Qh5 23. Nf4 Qh4 24. Nxe6 Nd5 25. Bxd5 Rxd5 26. Rg1 Rf7 27. Nxc7 Nxe5 28. dxe5 Rxe5 29. Rg3 Bc6 30. Ne6 Qe4 31. Qxe4 Rxe4 32. Kf1 Kh7 33. Bd4 Bf6 34. Bxf6 gxf6 35. Rd8 Bb5+ 36. Kg1 Bc6 37. f3 Re1+ 38. Kf2 Rb1 39. Nf8+ Rxf8 40. Rxf8 Rxb2+ 41. Ke1 Ra2 42. Rfg8 h5 43. R8g7+ Kh8 44. R7g6 Kh7 45. f4 a5 46. Rxf6 a4 47. Rfg6 Rb2 48. f6 Bd5 49. Rg7+ Kh8 50. R3g6 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "2"]
[White "Heemskerk, Jan Frederik"]
[Black "Esser, Johannes"]
[Result "1-0"]
[ECO "C67"]
[PlyCount "117"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. Qe2 Nd6 6. Ba4 Be7 7. Nxe5 0-0 8. Nf3 Bf6 9. c3 Re8 10. Qd1 Ne7 11. d4 c6 12. Qd3 Ng6 13. Bc2 b6 14. Be3 Bb7 15. Nbd2 Nc8 16. Ne4 d5 17. Nxf6+ Qxf6 18. Bg5 Qd6 19. Ne5 Nf8 20. f4 f6 21. Rae1 Ne7 22. Bh6 fxe5 23. Bxg7 e4 24. Qg3 Qg6 25. Bxf8 Qxg3 26. hxg3 Rxf8 27. Bb3 b5 28. Rxe4 Nf5 29. Kf2 Rf7 30. Re5 Kh8 31. g4 Nd6 32. Kg3 Raf8 33. Bc2 Nc4 34. Re6 Nxb2 35. g5 Na4 36. g6 hxg6 37. Rh1+ Kg8 38. Rxg6+ Rg7 39. Rxg7+ Kxg7 40. Rh7+ Kf6 41. Bxa4 Bc8 42. Bc2 Rg8+ 43. Kf3 Bg4+ 44. Kf2 Re8 45. Bd3 Bf5 46. Bxf5 Kxf5 47. Rf7+ Ke4 48. f5 Kd3 49. Rxa7 Kxc3 50. Rc7 Kxd4 51. Rxc6 Ra8 52. Rc2 Ke4 53. Rd2 d4 54. g4 Ra3 55. Rb2 Rf3+ 56. Kg2 d3 57. Rf2 Rxf2+ 58. Kxf2 Kd4 59. Ke1 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "6"]
[White "Heemskerk, Jan Frederik"]
[Black "Leonhardt, Paul Saladin"]
[Result "1-0"]
[ECO "C68"]
[PlyCount "59"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Bc5 6. d3 Qe7 7. Ne2 Bg4 8. Ng3 0-0-0 9. h3 Bd7 10. a3 h5 11. Bg5 f6 12. Be3 g6 13. Bxc5 Qxc5 14. Qd2 Nh6 15. 0-0-0 Be6 16. Qe3 Qb5 17. d4 Qc4 18. b3 Qb5 19. dxe5 c5 20. exf6 Qa5 21. Kb2 Nf7 22. Ng5 Nxg5 23. Qxg5 b5 24. Qxc5 Rd2 25. b4 Qa4 26. Rxd2 a5 27. Ra1 h4 28. Ne2 Rh5 29. Qa7 axb4 30. Qxa4 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "14"]
[White "Heemskerk, Jan Frederik"]
[Black "Neumann, Augustin"]
[Result "1/2-1/2"]
[ECO "C68"]
[PlyCount "149"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Bg4 6. h3 Bxf3 7. Qxf3 Nf6 8. d3 h6 9. 0-0 Bd6 10. Ne2 Qe7 11. a3 c5 12. Nc3 c6 13. Be3 0-0 14. Ne2 Kh7 15. Ng3 g6 16. Qe2 Nd7 17. f4 Qh4 18. fxe5 Bxe5 19. Nh1 Rae8 20. Qd2 b6 21. c3 Nf6 22. Bf4 Nh5 23. Bxh6 Ng3 24. Nxg3 Qxh6 25. Qxh6+ Kxh6 26. Ne2 Bc7 27. Rf6 Rc8 28. Raf1 Kg7 29. d4 Bd8 30. R6f3 Be7 31. b4 c4 32. Nf4 a5 33. d5 Bd6 34. Rd1 Rfe8 35. dxc6 Rxc6 36. Ne2 axb4 37. axb4 Rxe4 38. Nd4 Rc7 39. Nf5+ gxf5 40. Rxd6 f4 41. Rxb6 Rd7 42. Ra6 Rd1+ 43. Rf1 Rd2 44. Raa1 Ree2 45. Rxf4 Rxg2+ 46. Kf1 Rh2 47. Rg4+ Kh7 48. Rc1 Rh1+ 49. Rg1 Rxh3 50. Rg2 Rh1+ 51. Rg1 Rhh2 52. Rg3 f5 53. Kg1 f4 54. Rg4 f3 55. Rf1 Rh3 56. b5 Rb2 57. b6 Rxb6 58. Rxc4 Rg6+ 59. Kf2 Rg2+ 60. Ke3 Re2+ 61. Kd3 Ra2 62. Rf4 f2+ 63. Kd4 Rd2+ 64. Kc4 Rh2 65. Rd4 Re2 66. Rf4 Rd2 67. Rd4 Ra2 68. Rd3 Kg6 69. Rf3 Kg5 70. Kd3 Kg4 71. Ke3 Rc2 72. Rf4+ Kg5 73. R4xf2 Rh3+ 74. Kd4 Rhxc3 75. Rg1+ 1/2-1/2

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "10"]
[White "Heemskerk, Jan Frederik"]
[Black "Te Kolste, Jan Willem"]
[Result "1/2-1/2"]
[ECO "C31"]
[PlyCount "109"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. f4 d5 3. Nf3 dxe4 4. Nxe5 Bd6 5. Nc3 Nf6 6. Qe2 0-0 7. Nxe4 Nxe4 8. Qxe4 Re8 9. Bc4 Bxe5 10. fxe5 Nc6 11. 0-0 Rxe5 12. Bxf7+ Kh8 13. Qc4 Qd4+ 14. Qxd4 Nxd4 15. Bb3 Bf5 16. d3 Rae8 17. Bd2 Bg6 18. Rae1 Ne2+ 19. Kh1 R5e7 20. Bd5 c6 21. Bf3 Kg8 22. Bxe2 Rxe2 23. Rxe2 Rxe2 24. Rd1 c5 25. h3 c4 26. Kg1 cxd3 27. cxd3 Bxd3 28. Bc3 Bb5 29. Re1 Rc2 30. Re7 Kf8 31. Rxb7 Bc6 32. Rxa7 Rxg2+ 33. Kf1 Rg6 34. Bb4+ Kg8 35. a4 Bg2+ 36. Ke1 Bxh3 37. Ra8+ Kf7 38. a5 Bg2 39. Rf8+ Ke6 40. a6 Rf6 41. Re8+ Kf5 42. a7 Re6+ 43. Rxe6 Kxe6 44. Kf2 Ba8 45. Kg3 Kf5 46. Bd6 g5 47. Be7 h5 48. Bd6 h4+ 49. Kh3 Bf3 50. Be7 Kg6 51. Bd6 Kh5 52. Bc7 g4+ 53. Kh2 Kg5 54. Bd8+ Kh5 55. Bc7 1/2-1/2

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "8"]
[White "Heemskerk, Jan Frederik"]
[Black "Trimborn, Cornelius"]
[Result "0-1"]
[ECO "D53"]
[PlyCount "48"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 Be7 6. Rc1 c5 7. dxc5 dxc4 8. Bxc4 Bxc5 9. Nf3 a6 10. 0-0 b5 11. Bb3 Bb7 12. Nd2 Qb6 13. Qc2 Qc6 14. f3 Ng4 15. Nd5 exd5 16. fxg4 0-0 17. Nf3 Qb6 18. Qd3 Rae8 19. Bxd5 Bxe3+ 20. Kh1 Bxc1 21. Bxc1 Nc5 22. Qd4 Bxd5 23. Qxd5 Ne4 24. h3 Ng3+ 0-1

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "3"]
[White "Lange, Max1111"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "B45"]
[PlyCount "117"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nb5 Nf6 6. N1c3 Bb4 7. Bf4 e5 8. Bg5 0-0 9. a3 Be7 10. Bxf6 Bxf6 11. Be2 a6 12. Nd6 Be7 13. Nf5 d6 14. Nxe7+ Nxe7 15. 0-0 Be6 16. Bf3 Rc8 17. Qd2 Rc4 18. Rfd1 Rd4 19. Qe3 Qb6 20. Na4 Rxd1+ 21. Rxd1 Qxe3 22. fxe3 Nc8 23. b3 f6 24. Nb2 Rd8 25. Be2 Rd7 26. Kf2 Kf7 27. c4 f5 28. exf5 Bxf5 29. Bd3 e4 30. Be2 Be6 31. Rd4 d5 32. cxd5 Bf5 33. Nc4 Kf6 34. Nd2 Ke5 35. Nc4+ Kf6 36. Nd2 Ke5 37. Nc4+ Kf6 38. a4 Ne7 39. Nb6 Rd6 40. a5 h6 41. b4 g5 42. Bc4 Ke5 43. Bb3 Kf6 44. Ke1 h5 45. Kd2 g4 46. Kc3 h4 47. Rd2 h3 48. g3 Rd8 49. Kd4 Nc6+ 50. Kc5 Ne5 51. Bd1 Nd3+ 52. Kc4 Ke5 53. Be2 Kd6 54. Kd4 Ne5 55. Nc4+ Nxc4 56. Bxc4 Rc8 57. Rf2 Rf8 58. Be2 Ke7 59. Ke5 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "5"]
[White "Leussen, Benjamin"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "59"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bg4 7. 0-0 Be7 8. Re1 Nd6 9. Nc3 c6 10. Ne2 Nd7 11. Ng3 0-0 12. h3 Bxf3 13. Qxf3 Bf6 14. Bf4 Ne8 15. c3 g6 16. Re2 Nc7 17. Nf5 Re8 18. Rae1 Rxe2 19. Rxe2 Ne6 20. Nd6 Qb6 21. Be5 Kg7 22. Qg4 Rf8 23. Nxf7 Nxd4 24. Bxd4 Bxd4 25. Ng5 Bxf2+ 26. Kh1 Nc5 27. Nxh7 Ne4 28. Bxe4 dxe4 29. Nxf8 Kxf8 30. Qf4+ 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "13"]
[White "Loman, Rudolf Johannes"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "121"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Be7 8. Re1 Bg4 9. c3 Nf6 10. Bf4 Nh5 11. Be3 0-0 12. h3 Be6 13. Ng5 Bxg5 14. Qxh5 h6 15. f4 Bf6 16. g4 Re8 17. g5 g6 18. Bxg6 fxg6 19. Qxg6+ Bg7 20. gxh6 Qf6 21. Qxg7+ Qxg7+ 22. hxg7 Bxh3 23. Nd2 Re7 24. Kf2 Rae8 25. Nf3 Bf5 26. Ne5 Kxg7 27. Rh1 Nxe5 28. dxe5 Re6 29. Rh5 Be4 30. f5 Rxe5 31. Bd4 Kf7 32. Bxe5 Rxe5 33. Rh7+ Kf6 34. Rxc7 Rxf5+ 35. Ke2 Bf3+ 36. Kd3 Be4+ 37. Kd4 b6 38. Rxa7 Rf2 39. c4 Rd2+ 40. Kc3 Rc2+ 41. Kb3 Rxc4 42. a4 Bc2+ 43. Ka3 d4 44. Ra6 Kf5 45. b3 Rc3 46. Rxb6 d3 47. Kb2 Rc8 48. Rd6 Ke5 49. Rd7 Ke4 50. Re1+ Kf3 51. Re5 Kf4 52. Ree7 Rb8 53. Rb7 Rd8 54. Red7 Rh8 55. Kc3 Ke3 56. Re7+ Kf2 57. a5 Rh3 58. a6 Bxb3 59. Kxb3 d2+ 60. Kc2 Rd3 61. Kd1 1-0

[Event "NED SB International-03 Hilversum"]
[Site "Hilversum"]
[Date "1903.08.??"]
[Round "7"]
[White "Schwan, Wilhelm"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "39"]
[EventDate "1903.08.03"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. f4 d5 2. e3 Nf6 3. d4 Bg4 4. Nf3 e6 5. Bd3 c5 6. c3 Ne4 7. 0-0 f5 8. Nbd2 Bh5 9. Qe1 Nd7 10. Bb5 Nxd2 11. Bxd2 Bxf3 12. gxf3 a6 13. Bxd7+ Kxd7 14. e4 Qb6 15. Qf2 cxd4 16. cxd4 Rc8 17. Bc3 Be7 18. Kh1 Kc7 19. Qe1 Bf6 20. Ba5 1-0

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.16"]
[Round "15"]
[White "Schwan, Wilhelm"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "99"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. f4 d5 2. d4 Nf6 3. e3 Bg4 4. Nf3 e6 5. Bd3 Nc6 6. 0-0 Ne4 7. Nbd2 f5 8. c3 Bd6 9. h3 Nxd2 10. Bxd2 Bxf3 11. Qxf3 Qh4 12. Kh2 g5 13. g3 Qh6 14. c4 g4 15. Qg2 dxc4 16. Bxc4 Ne7 17. e4 c6 18. Rae1 0-0-0 19. exf5 exf5 20. Ba5 Rde8 21. Re6 gxh3 22. Qf3 Qg7 23. Rxd6 h5 24. Be6+ Kb8 25. Rd7 h4 26. gxh4 Rxh4 27. Bc7+ Ka8 28. Be5 Qg6 29. d5 Rg4 30. dxc6 Nxc6 31. Bd5 Rg2+ 32. Kh1 Rg3 33. Bxc6 Qxc6 34. Qxc6 bxc6 35. Rg1 Re3 36. Rgg7 Re1+ 37. Kh2 Re2+ 38. Kxh3 Re3+ 39. Kh4 Rh8+ 40. Rh7 Rxh7+ 41. Rxh7 Re2 42. Kg5 a5 43. Kxf5 a4 44. a3 c5 45. Ke6 c4 46. Kd5 Rd2+ 47. Kc6 c3 48. Kb6 Rxb2+ 49. Ka6 Rh2 50. Ra7# 1-0

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.15"]
[Round "14"]
[White "Heemskerk, Jan Frederik"]
[Black "Olland, Adolf Georg"]
[Result "0-1"]
[ECO "B45"]
[PlyCount "186"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 Bb4 7. Nd6+ Ke7 8. Bf4 e5 9. Nf5+ Kf8 10. Bg5 d6 11. Ne3 Qa5 12. f3 Bxc3+ 13. bxc3 Qxc3+ 14. Kf2 Ne8 15. Rb1 Nd4 16. Bd3 Nc7 17. Bd8 Nce6 18. Be7+ Ke8 19. Nd5 Qc5 20. Kg3 Nf4 21. c3 Nxd5 22. cxd4 Qc7 23. exd5 Qxe7 24. Bb5+ Kf8 25. Re1 a6 26. Qa4 g6 27. dxe5 dxe5 28. f4 exf4+ 29. Qxf4 g5 30. Qd4 Qd6+ 31. Kf2 Qf4+ 32. Qxf4 gxf4 33. Re8+ Kg7 34. Rxh8 Kxh8 35. Be8 Kg7 36. d6 Bf5 37. Re1 Be6 38. d7 Rd8 39. a4 Kf6 40. a5 Bxd7 41. Bxd7 Rxd7 42. Kf3 Rd5 43. Rb1 Rb5 44. Ra1 Kf5 45. Ra4 Rb3+ 46. Kf2 f6 47. Ke2 Kg4 48. Kf2 Rb2+ 49. Kg1 Kg5 50. Rc4 Ra2 51. Rb4 Rxa5 52. Rxb7 h5 53. Kf2 Ra2+ 54. Kf3 Ra3+ 55. Kf2 a5 56. Rg7+ Kf5 57. Ra7 f3 58. g3 a4 59. Rh7 Kg6 60. Ra7 Kf5 61. Rh7 Ra2+ 62. Kxf3 Rxh2 63. Ra7 Ra2 64. Ra5+ Kg6 65. Ra6 a3 66. Ra4 Ra1 67. Ra5 a2 68. Kg2 f5 69. Ra6+ Kg5 70. Ra4 Kf6 71. Ra6+ Ke5 72. Ra4 Kd5 73. Ra5+ Kc6 74. Ra6+ Kb5 75. Ra8 Kb4 76. Ra7 Kb3 77. Rb7+ Kc3 78. Rc7+ Kd4 79. Rd7+ Ke5 80. Re7+ Kf6 81. Ra7 Kg5 82. Ra8 h4 83. gxh4+ Kh5 84. Ra5 Kxh4 85. Ra4+ Kg5 86. Ra5 Kg4 87. Ra3 f4 88. Ra4 Kf5 89. Ra3 Kg5 90. Ra5+ Kh4 91. Ra4 Kg4 92. Kh2 Kf3 93. Ra8 Re1 0-1

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.15"]
[Round "13"]
[White "Mannheimer, Nathan"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C30"]
[PlyCount "59"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[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. Be2 Nc6 5. Nc3 Nf6 6. h3 Nh5 7. Na4 Ng3 8. Nxc5 Nxh1 9. Nb3 exf4 10. d4 g5 11. Bb5 Bd7 12. Qd3 Qe7 13. Bd2 a6 14. Bxc6 Bxc6 15. d5 Bd7 16. 0-0-0 Ng3 17. Re1 0-0-0 18. e5 h6 19. Bb4 Bf5 20. Qc4 Kb8 21. exd6 Qxe1+ 22. Bxe1 cxd6 23. Nbd4 Rc8 24. Qb4 Be4 25. Bf2 Ka8 26. Qb6 Rc5 27. Nc6 bxc6 28. Bxc5 dxc5 29. dxc6 Bxc6 30. Qxc6+ 1-0

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.14"]
[Round "12"]
[White "Heemskerk, Jan Frederik"]
[Black "Partaj, Josef"]
[Result "1-0"]
[ECO "C67"]
[PlyCount "121"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. dxe5 Nxb5 7. a4 Nxe5 8. Nxe5 Nd6 9. Re1 Be7 10. Bg5 f6 11. Qh5+ Kf8 12. Ng6+ hxg6 13. Qxh8+ Kf7 14. Qxd8 Bxd8 15. Bf4 Nf5 16. Nc3 c6 17. Ne4 Be7 18. c4 d5 19. cxd5 cxd5 20. Nc3 Bb4 21. Red1 Bxc3 22. bxc3 Be6 23. Rab1 b6 24. a5 g5 25. Bc7 Rc8 26. axb6 axb6 27. Bxb6 Rxc3 28. Rbc1 Rb3 29. Rc7+ Kg6 30. Bc5 Rc3 31. Bd6 Rc4 32. Rxc4 dxc4 33. Bb4 Nh6 34. Kf1 Ng4 35. h3 Ne5 36. Rd6 Bf7 37. Ke2 g4 38. Bc3 Kf5 39. hxg4+ Nxg4 40. f3 Nh6 41. g4+ Kg6 42. Bd2 Ng8 43. f4 Be8 44. Rd8 Bb5 45. Rxg8 c3+ 46. Kd1 cxd2 47. Kxd2 Bd7 48. f5+ Kf7 49. Ra8 Bc6 50. Ra7+ Kf8 51. Ke3 Bb5 52. Kf4 Bc4 53. g5 Bb3 54. g6 Bc4 55. Ke3 Bb3 56. Kd3 Bd1 57. Ra8+ Ke7 58. Rg8 Kd6 59. Rxg7 Ke5 60. Rf7 Bb3 61. Rf8 1-0

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.14"]
[Round "11"]
[White "Heemskerk, Jan Frederik"]
[Black "Swiderski, Rudolf"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "62"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 a6 7. Bc4 e6 8. 0-0 Nge7 9. Nce2 0-0 10. Qd2 f5 11. exf5 gxf5 12. Nxc6 Nxc6 13. Rad1 Qh4 14. Bb3 d5 15. Bg5 Qh5 16. Ng3 Qg6 17. c3 Kh8 18. Rfe1 e5 19. f4 h6 20. Bh4 Qg4 21. fxe5 Qxh4 22. Qxd5 f4 23. Ne4 Bg4 24. Nd6 Bxd1 25. Rxd1 Nxe5 26. Qxb7 f3 27. Nf5 Rxf5 28. Qxa8+ Rf8 29. Qd5 Ng4 30. Qd2 Qxh2+ 31. Kf1 Qh1# 0-1

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.12"]
[Round "10"]
[White "Atkins, Henry Ernest"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "83"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 Bd6 5. Bg3 a6 6. e3 Bxg3 7. hxg3 dxc4 8. Bxc4 b5 9. Bd3 Bb7 10. Nf3 Nbd7 11. 0-0 h6 12. Qe2 0-0 13. Rad1 Qe7 14. Ne5 Rfd8 15. f4 c5 16. Bb1 cxd4 17. exd4 Nf8 18. g4 N6h7 19. Ne4 f6 20. Nf3 Ng6 21. g3 Qc7 22. Nc5 Ngf8 23. Nxb7 Qxb7 24. Be4 Qd7 25. Bxa8 Rxa8 26. Qe4 Rd8 27. Kg2 f5 28. gxf5 exf5 29. Qc2 Nf6 30. Qb3+ Kh7 31. Rfe1 Ne4 32. d5 Qa7 33. Qe3 Qb7 34. Qd4 Ne6 35. Qe5 N6c5 36. Qxf5+ g6 37. Qe5 Qg7 38. Rxe4 Nxe4 39. Qxe4 Qxb2+ 40. Rd2 Qg7 41. d6 Rd7 42. Ne5 1-0

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.12"]
[Round "9"]
[White "Heemskerk, Jan Frederik"]
[Black "Tresling, Joan Diderik"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "56"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[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. exd5 exd5 4. Bd3 Bd6 5. Nc3 c6 6. Nge2 Qc7 7. Bg5 h6 8. Be3 Be6 9. Qd2 Nd7 10. Nf4 0-0-0 11. Nxe6 fxe6 12. Ne2 Ngf6 13. c4 e5 14. c5 exd4 15. Nxd4 Nxc5 16. Bf5+ Kb8 17. b4 Nce4 18. Qb2 Qe7 19. 0-0 g6 20. Bh3 Ng5 21. Bxg5 hxg5 22. Rfe1 Ne4 23. f3 Qe5 24. fxe4 Qxh2+ 25. Kf2 Rxh3 26. Nf3 Rxf3+ 27. Kxf3 Qg3+ 28. Ke2 Qxg2+ 0-1

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.11"]
[Round "8"]
[White "Bleijkmans, Dirk"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "D37"]
[PlyCount "71"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 Be7 5. e3 a6 6. Rc1 0-0 7. Nf3 Nh5 8. Bg3 Nd7 9. cxd5 Nxg3 10. hxg3 Nf6 11. dxe6 Bxe6 12. Ng5 Bg4 13. Qc2 h6 14. Nge4 Re8 15. Nxf6+ Bxf6 16. Be2 Qd7 17. Bxg4 Qxg4 18. Kf1 Rad8 19. Ne2 Qe6 20. b3 c6 21. Rh5 Bg5 22. Ng1 Qg4 23. Rh3 Rd5 24. Nf3 Rf5 25. Ne5 Rexe5 26. dxe5 Bxe3 27. Rh4 Qxg3 28. Qxf5 Qxh4 29. Rd1 Bc5 30. g3 Qb4 31. Rd7 Be7 32. e6 fxe6 33. Qxe6+ Kf8 34. Rc7 Qb5+ 35. Kg1 Qd3 36. Qxe7+ 1-0

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.10"]
[Round "7"]
[White "Heemskerk, Jan Frederik"]
[Black "Dimer, Julius"]
[Result "0-1"]
[ECO "B45"]
[PlyCount "88"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nf6 6. Ndb5 a6 7. Nd6+ Bxd6 8. Qxd6 Qe7 9. Bf4 e5 10. Qxe7+ Kxe7 11. Bg5 Nd4 12. 0-0-0 Kf8 13. Bxf6 gxf6 14. Nd5 Kg7 15. f4 Ne6 16. f5 Nc5 17. Re1 b5 18. Re3 Bb7 19. c4 Rac8 20. Kb1 Bxd5 21. cxd5 Rc7 22. Be2 Rhc8 23. Rc1 b4 24. b3 a5 25. Rc4 a4 26. Kb2 a3+ 27. Kc2 Nb7 28. Kd2 Rxc4 29. Bxc4 Nd6 30. Kd3 h5 31. Re2 Kh6 32. h4 Rg8 33. Kd2 Rg4 34. Bd3 Rxh4 35. g3 Rh1 36. Re1 Rh3 37. Re3 Kg7 38. Ke1 h4 39. Kf2 Rh2+ 40. Kf3 Rxa2 41. Re1 Rb2 42. Rb1 Rxb1 43. Bxb1 hxg3 44. Kxg3 Nxe4+ 0-1

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.10"]
[Round "6"]
[White "Te Kolste, Jan Willem"]
[Black "Heemskerk, Jan Frederik"]
[Result "0-1"]
[ECO "C67"]
[PlyCount "82"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. dxe5 Nxb5 7. a4 Nd6 8. Bg5 Be7 9. Bxe7 Qxe7 10. exd6 Qxd6 11. Re1+ Ne7 12. Qxd6 cxd6 13. Ra3 Kd8 14. Ng5 Rf8 15. Nxh7 Rh8 16. Ng5 Rf8 17. Rd3 b6 18. Rxd6 Bb7 19. Red1 Bc6 20. Nc3 Kc7 21. b4 Rad8 22. b5 Bb7 23. f4 f6 24. Nge4 Nf5 25. R6d3 Rfe8 26. Nd6 Nxd6 27. Rxd6 Re3 28. R1d3 Re1+ 29. Kf2 Rc1 30. Rd2 Rxc2 31. Rxd7+ Rxd7 32. Rxc2 Kd8 33. Kg3 Ke7 34. Re2+ Kf7 35. Kh4 Rd4 36. g3 Bf3 37. Rf2 g5+ 38. Kh3 g4+ 39. Kh4 Rd8 40. Rxf3 gxf3 41. Kh3 Rh8+ 0-1

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.09"]
[Round "5"]
[White "Heemskerk, Jan Frederik"]
[Black "Moquette, Julien Jean Rudolph"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "76"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[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. Nc3 Nf6 4. exd5 exd5 5. Bg5 Bb4 6. Bd3 0-0 7. Qd2 Be6 8. a3 Bxc3 9. bxc3 Re8 10. Ne2 Bg4 11. f3 Bh5 12. Kf2 Nbd7 13. Nf4 h6 14. h4 Ne4+ 15. fxe4 hxg5 16. Nxh5 dxe4 17. Bxe4 Rxe4 18. Qxg5 Qxg5 19. hxg5 Rg4 20. Rab1 b6 21. Rb5 c5 22. Kf3 Rxg5 23. g4 f5 24. Kf4 Rxg4+ 25. Kxf5 Rg2 26. Ke6 Nf8+ 27. Kd5 Rd8+ 28. Kc4 cxd4 29. cxd4 Rxc2+ 30. Kd3 Rg2 31. d5 Ne6 32. Rc1 Rg5 33. Kc4 Rc8+ 34. Kb4 Rg4+ 35. Kb3 Nd4+ 36. Kb2 Rg2+ 37. Kb1 Rxc1+ 38. Kxc1 Nxb5 0-1

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.08"]
[Round "3"]
[White "Heemskerk, Jan Frederik"]
[Black "Van Foreest, Arnold E"]
[Result "0-1"]
[ECO "C62"]
[PlyCount "104"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Be7 5. Nc3 Nc6 6. Bb5 Bd7 7. Nd5 Nxd4 8. Bxd7+ Qxd7 9. Qxd4 f6 10. 0-0 c6 11. Nxe7 Nxe7 12. Bf4 d5 13. Rad1 0-0 14. c4 Rfd8 15. Rd3 Qg4 16. exd5 cxd5 17. Bg3 Qxd4 18. Rxd4 dxc4 19. Rxc4 Rac8 20. Rc7 Rxc7 21. Bxc7 Rd2 22. Rb1 Nc6 23. Bf4 Rc2 24. Kf1 Kf7 25. a3 Na5 26. Ke1 a6 27. Be3 Nc4 28. Bd4 Ke6 29. a4 g5 30. b3 Nd2 31. Kd1 Ra2 32. Rb2 Rxb2 33. Bxb2 Nxb3 34. Kc2 Nc5 35. a5 Nd7 36. Kd3 Kd5 37. g4 Ne5+ 38. Bxe5 Kxe5 39. Kc4 Kd6 40. Kd4 b5 41. axb6 Kc6 42. b7 Kxb7 43. Kd5 Kc7 44. Ke6 a5 45. Kxf6 a4 46. Kxg5 a3 47. Kh6 a2 48. Kxh7 a1Q 49. g5 Qh1 50. g6 Qxh2+ 51. Kg8 Qxf2 52. g7 Kd6 0-1

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.08"]
[Round "4"]
[White "Pelzer, Ferdinand Walter"]
[Black "Heemskerk, Jan Frederik"]
[Result "1/2-1/2"]
[ECO "C67"]
[PlyCount "82"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 bxc6 7. dxe5 Nb7 8. Nc3 Be7 9. Qe2 0-0 10. Nd4 Bc5 11. Be3 Bxd4 12. Bxd4 d5 13. Qe3 Qe7 14. Na4 Re8 15. Qc3 Bd7 16. f4 Nd8 17. f5 Qg5 18. Qf3 g6 19. fxg6 hxg6 20. Nc5 Bf5 21. Qf2 Re7 22. Rae1 Ne6 23. Nxe6 fxe6 24. Bxa7 Rh7 25. Bc5 Kg7 26. Be3 Qh4 27. Qxh4 Rxh4 28. Bg5 Rb4 29. h3 Rxa2 30. g4 Bxg4 31. Bf6+ Kg8 32. hxg4 Rxg4+ 33. Kh2 Rxb2 34. Ra1 Rxc2+ 35. Kh3 Rgg2 36. Ra8+ Kf7 37. Bh4+ Kg7 38. Bf6+ Kf7 39. Bh8+ Ke7 40. Bf6+ Kf7 41. Bh4+ Kg7 1/2-1/2

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.07"]
[Round "1"]
[White "Heemskerk, Jan Frederik"]
[Black "Trimborn, Cornelius"]
[Result "0-1"]
[ECO "C67"]
[PlyCount "48"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. dxe5 Nxb5 7. a4 d6 8. axb5 Nxe5 9. Re1 Be6 10. Ng5 Be7 11. Nxe6 fxe6 12. f4 Nf7 13. Rxe6 0-0 14. Ra3 Qd7 15. Qd5 c6 16. bxc6 bxc6 17. Qe4 Rae8 18. Re3 Ne5 19. Rxe7 Rxe7 20. fxe5 Rxe5 21. Qc4+ d5 22. Qd4 Qf5 23. h3 Qf2+ 24. Kh2 Rg5 0-1

[Event "NED SB International-02 Hoofdklasse"]
[Site "Amsterdam"]
[Date "1899.08.07"]
[Round "2"]
[White "Meiners, Willem Barend Hendr"]
[Black "Heemskerk, Jan Frederik"]
[Result "1/2-1/2"]
[ECO "C67"]
[PlyCount "155"]
[EventDate "1899.08.07"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. a4 e4 7. Ne1 Be7 8. Bf4 0-0 9. Nc3 a6 10. Bxc6 dxc6 11. Bxd6 Bxd6 12. Nxe4 Bxh2+ 13. Kxh2 Qh4+ 14. Kg1 Qxe4 15. Ra3 Be6 16. Re3 Qh4 17. Nf3 Qf6 18. c3 Bg4 19. Qb3 b5 20. Ne5 Be6 21. Qa3 Bc4 22. Rfe1 Bd5 23. Nd7 Qg5 24. Rg3 Qd2 25. Qe7 bxa4 26. Nxf8 Rxf8 27. Rge3 g6 28. R3e2 Qf4 29. Qe5 Qg4 30. f4 Qc8 31. Rf2 Be6 32. Qa5 Qb7 33. Qxa4 Rb8 34. Re5 Qc8 35. Ra5 Bb3 36. Qa3 Qe6 37. Re5 Qg4 38. Qe7 Be6 39. Re1 Qg3 40. Qa3 Rb3 41. Qa1 h5 42. Qc1 a5 43. Qe3 Qh4 44. Ra1 Rb5 45. Qd2 g5 46. f5 Bd5 47. Qe3 g4 48. Qf4 Qf6 49. Re1 Rb8 50. Qxc7 Rd8 51. Qe7 Qxe7 52. Rxe7 Kf8 53. Ra7 Re8 54. Kh2 h4 55. Rd2 Kg7 56. Rxa5 Re1 57. c4 Bxc4 58. Re5 Rb1 59. Rc2 Bd5 60. Rce2 Kf6 61. Re8 Kxf5 62. Rf2+ Bf3 63. Rxf3+ gxf3 64. gxf3 Rxb2+ 65. Kg1 h3 66. Re4 h2+ 67. Kh1 Rd2 68. Rh4 Ke6 69. Rf4 f6 70. Rh4 Kf5 71. Re4 Rf2 72. Rh4 Rxf3 73. Kxh2 Rf4 74. Rh5+ Ke4 75. Rc5 Kxd4 76. Rxc6 Ke4 77. Kg2 Kf5 78. Rc2 1/2-1/2

[Event "NED SB-20"]
[Site "Amsterdam"]
[Date "1892.08.05"]
[Round "6"]
[White "Loman, Rudolf Johannes"]
[Black "Heemskerk, Jan Frederik"]
[Result "0-1"]
[ECO "C65"]
[PlyCount "53"]
[EventDate "1892.08.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7 5. Bc4 Ng6 6. Nc3 Bb4 7. Bd2 d6 8. Qe2 Be6 9. Bb3 c6 10. Bxe6 fxe6 11. d4 exd4 12. Nxd4 Qe7 13. g3 Bxc3 14. Bxc3 Ne5 15. f4 Ned7 16. 0-0-0 0-0-0 17. Ba5 Nb6 18. e5 dxe5 19. Qxe5 Rd5 20. Qe1 Qd7 21. Bxb6 axb6 22. Qe3 Rd8 23. c3 c5 24. Qxe6 cxd4 25. Qxb6 dxc3 26. Rxd5 Qxd5 27. bxc3 0-1

[Event "NED SB-20"]
[Site "Amsterdam"]
[Date "1892.08.04"]
[Round "5"]
[White "Heemskerk, Jan Frederik"]
[Black "Meijer, BJ."]
[Result "0-1"]
[ECO "D37"]
[PlyCount "88"]
[EventDate "1892.08.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bf4 Bb4 6. e3 Ne4 7. Qc2 Nc6 8. a3 Bxc3+ 9. bxc3 g5 10. Bg3 h5 11. Ne5 Nxe5 12. Bxe5 f6 13. f3 fxe5 14. fxe4 Qf6 15. cxd5 exd5 16. exd5 Bf5 17. e4 Bg6 18. Bd3 0-0-0 19. dxe5 Qxe5 20. 0-0 Rhf8 21. a4 h4 22. Rac1 Rf4 23. Rxf4 gxf4 24. Qf2 Kb8 25. Qd4 Qg5 26. Rf1 Bh5 27. Qf2 f3 28. g3 hxg3 29. hxg3 Bg4 30. Qd4 Qh6 31. Bc4 Qh3 32. Kf2 Qh2+ 33. Ke3 Qxg3 34. Rf2 Rf8 35. e5 Bh5 36. Kd2 Rf4 37. Qe3 Rxc4 38. e6 Rxa4 39. e7 Be8 40. Rxf3 Ra2+ 41. Kd3 Qg6+ 42. Kd4 Ra4+ 43. c4 Qg7+ 44. Qe5 Rxc4+ 0-1

[Event "NED SB-20"]
[Site "Amsterdam"]
[Date "1892.08.03"]
[Round "4"]
[White "Van den Berg, F."]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "117"]
[EventDate "1892.08.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 d6 6. Be3 Bb6 7. Qd2 Be6 8. Bb3 h6 9. h3 Ne7 10. d4 Bxb3 11. axb3 Ng6 12. d5 0-0 13. Qd3 Nh5 14. Ne2 Qd7 15. g4 Nhf4 16. Bxf4 Nxf4 17. Qd2 Nxe2 18. Qxe2 c6 19. 0-0-0 c5 20. Nh4 Bd8 21. Nf5 Bg5+ 22. Kb1 g6 23. Ne3 b5 24. Rdg1 a5 25. c3 Rfb8 26. Kc2 a4 27. Ra1 axb3+ 28. Kxb3 c4+ 29. Kc2 Qb7 30. Rhb1 Ra7 31. Kd1 Rba8 32. Rxa7 Qxa7 33. Ke1 Rc8 34. Nc2 Qa2 35. Qd1 Bh4 36. Nb4 Qa7 37. Qe2 Qc5 38. Ra1 Rf8 39. Qf3 Kg7 40. Nc6 Qb6 41. Ra7 Kg8 42. Ke2 h5 43. Rd7 hxg4 44. hxg4 Qa6 45. Rxd6 Qa2 46. Nxe5 Qxb2+ 47. Kf1 b4 48. Rd7 bxc3 49. Rxf7 Qxf2+ 50. Qxf2 Bxf2 51. Rxf8+ Kxf8 52. Ke2 Ke7 53. Nxc4 Kf6 54. e5+ Ke7 55. Kd3 Bd4 56. e6 g5 57. Na3 Bf6 58. Nb5 Kd8 59. Nxc3 1-0

[Event "NED SB-20"]
[Site "Amsterdam"]
[Date "1892.08.02"]
[Round "3"]
[White "Heemskerk, Jan Frederik"]
[Black "Van Foreest, Arnold E"]
[Result "0-1"]
[ECO "C54"]
[PlyCount "48"]
[EventDate "1892.08.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Be3 Bb6 7. Nbd2 Qe7 8. h3 Be6 9. Bb3 Nd7 10. Qe2 0-0-0 11. d4 Bxb3 12. d5 Bxd5 13. exd5 Ncb8 14. a4 e4 15. Bxb6 Nxb6 16. c4 Rde8 17. Nd4 e3 18. Qg4+ f5 19. Qxf5+ N8d7 20. Qd3 exd2+ 21. Kxd2 Qe4 22. Qc3 Qf4+ 23. Kc2 Qxf2+ 24. Kb3 Re3 0-1

[Event "NED SB-20"]
[Site "Amsterdam"]
[Date "1892.08.01"]
[Round "1"]
[White "Olland, Adolf Georg"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C80"]
[PlyCount "95"]
[EventDate "1892.08.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 7. Bxc6 dxc6 8. Nxe5 Be6 9. Qe2 Be7 10. d3 0-0 11. b4 Nd7 12. Nxf7 Rxf7 13. Qxe6 Bxb4 14. Re2 Qf6 15. Qxf6 Nxf6 16. Bb2 Raf8 17. Nd2 Nd5 18. Ne4 Rf5 19. a3 Bd6 20. Nxd6 cxd6 21. f3 Rg5 22. Kh1 Rg6 23. Rae1 Nf4 24. Rd2 Kf7 25. g3 Re6 26. Rf1 Nd5 27. f4 Rfe8 28. c4 Ne3 29. f5 Rf6 30. Re1 Nxf5 31. Rxe8 Kxe8 32. Bxf6 gxf6 33. Rf2 Nd4 34. Rxf6 Nc2 35. a4 Nb4 36. Rxd6 Ke7 37. Rh6 Nxd3 38. Rxh7+ Kd6 39. Rxb7 Kc5 40. h4 Kxc4 41. h5 Nf2+ 42. Kg2 Ng4 43. Kf3 Nh6 44. Rb6 Kc5 45. Rxa6 Ng8 46. Ra8 Nh6 47. Rb8 Nf7 48. a5 1-0

[Event "NED SB-19"]
[Site "Utrecht"]
[Date "1891.08.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Loman, Rudolf Johannes"]
[Result "0-1"]
[ECO "E12"]
[PlyCount "104"]
[EventDate "1891.08.23"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 b6 3. d4 d5 4. cxd5 exd5 5. Bf4 Bb7 6. e3 a6 7. Nf3 Nf6 8. Rc1 Be7 9. Bd3 0-0 10. a3 Nbd7 11. Ne2 c5 12. Ng3 c4 13. Bb1 b5 14. Nf5 Ne4 15. Ne5 Nxe5 16. dxe5 g6 17. Qg4 Bc8 18. Bxe4 dxe4 19. Nxe7+ Qxe7 20. Qg3 Re8 21. Rd1 c3 22. Rd6 cxb2 23. 0-0 Bf5 24. Bg5 Qxe5 25. Bf6 Qxg3 26. hxg3 Re6 27. Rxe6 Bxe6 28. Bxb2 Rd8 29. Bc3 Rd3 30. Rc1 Bb3 31. Bb4 Rd1+ 32. Rxd1 Bxd1 33. Kf1 f5 34. Ke1 Bb3 35. Kd2 Bc4 36. Kc3 Bf1 37. Kd4 Bxg2 38. Kc5 Kf7 39. Kb6 h5 40. Bd6 g5 41. Kxa6 Bf1 42. Kb6 h4 43. gxh4 gxh4 44. Kc5 Kg6 45. Bf4 Kh5 46. Kd6 Kg4 47. Ke5 Kf3 48. Kxf5 Bd3 49. Kg5 h3 50. Kh4 Kg2 51. Kg4 Be2+ 52. Kf5 Bf3 0-1

[Event "NED SB-19"]
[Site "Utrecht"]
[Date "1891.08.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Olland, Adolf Georg"]
[Result "0-1"]
[ECO "A21"]
[PlyCount "78"]
[EventDate "1891.08.23"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Bc5 3. e3 Nc6 4. a3 a5 5. Bd3 d6 6. b3 f5 7. Bb2 Nf6 8. Nh3 0-0 9. f4 Ng4 10. 0-0 Ne7 11. Qe1 Ng6 12. Qg3 c6 13. Nd1 Qb6 14. Bc2 Be6 15. Rc1 Rae8 16. Ng5 Nxf4 17. Rxf4 exf4 18. Qh3 h6 19. Nxe6 Rxe6 20. d4 fxe3 21. Bxf5 Rxf5 22. Qxg4 e2 23. Ne3 Rxe3 24. Re1 Ref3 25. gxf3 Rg5 26. dxc5 Qxc5+ 27. Kg2 Rxg4+ 28. fxg4 Qe3 29. Bc1 Qxb3 30. Rxe2 Qxc4 31. Re1 Qxg4+ 32. Kf2 Qh4+ 33. Ke2 Qxh2+ 34. Kd3 h5 35. Re2 Qh3+ 36. Kd2 h4 37. Bb2 Qb3 38. Kc1 Qc4+ 39. Rc2 Qxc2+ 0-1

[Event "NED SB-19"]
[Site "Utrecht"]
[Date "1891.08.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Van Foreest, Arnold E"]
[Result "0-1"]
[ECO "C25"]
[PlyCount "40"]
[EventDate "1891.08.23"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. d4 g4 6. Bc4 gxf3 7. 0-0 d5 8. Nxd5 Bg4 9. Bxf4 f2+ 10. Rxf2 Bxd1 11. Rxd1 Bd6 12. e5 Nxe5 13. dxe5 Bc5 14. Ne3 Qe7 15. Bg5 Qxg5 16. Bxf7+ Ke7 17. Nd5+ Kf8 18. Rdf1 Bxf2+ 19. Rxf2 Qc1+ 20. Rf1 Qxf1+ 0-1

[Event "NED SB-19"]
[Site "Utrecht"]
[Date "1891.08.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Van Rhijn, Arnoldus"]
[Result "1-0"]
[ECO "C11"]
[PlyCount "51"]
[EventDate "1891.08.23"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. dxc5 Bxc5 7. Qg4 0-0 8. Nf3 Nc6 9. Bd3 f5 10. Qh3 h6 11. g4 fxg4 12. Qxg4 Ne7 13. Qxe6+ Kh8 14. Qh3 Nxe5 15. Qh5 Nxd3+ 16. cxd3 Nf5 17. Ne5 Bd7 18. Ng6+ Kg8 19. Nxf8 Qe7+ 20. Kd1 Rxf8 21. Re1 Qd8 22. b3 Qf6 23. Re5 Ne3+ 24. Bxe3 Bxe3 25. Nxd5 Qd6 26. Rxe3 1-0

[Event "NED SB-19"]
[Site "Utrecht"]
[Date "1891.08.??"]
[Round "?"]
[White "Loman, Rudolf Johannes"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C11"]
[PlyCount "75"]
[EventDate "1891.08.23"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. dxc5 Bxc5 7. Qg4 0-0 8. Bd3 f5 9. Qh3 h6 10. Nf3 Rf7 11. Bd2 Nf8 12. g4 fxg4 13. Qxg4 Nc6 14. Ne2 a5 15. Ng3 Ne7 16. Nh5 Qb6 17. Nf6+ Kh8 18. Ng5 Rxf6 19. exf6 g6 20. fxe7 Bxe7 21. Nf7+ Kg7 22. Ne5 Qxb2 23. Ke2 Bf6 24. Bxg6 Bxe5 25. Rag1 Bxf4 26. Bxf4 e5 27. Bf5+ Kf6 28. Bg5+ hxg5 29. Qxg5+ Kf7 30. Qh5+ Ke7 31. Rg7+ Kd6 32. Qf7 Nd7 33. Qe7+ Kc6 34. Bxd7+ Bxd7 35. Qxd7+ Kc5 36. Qc7+ Kd4 37. Rg4+ e4 38. Rd1# 1-0

[Event "NED SB-19"]
[Site "Utrecht"]
[Date "1891.08.??"]
[Round "?"]
[White "Olland, Adolf Georg"]
[Black "Heemskerk, Jan Frederik"]
[Result "1/2-1/2"]
[ECO "C67"]
[PlyCount "90"]
[EventDate "1891.08.23"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. Re1 Nd6 6. Bxc6 dxc6 7. Nxe5 Be7 8. Qe2 Be6 9. d3 0-0 10. Nxf7 Bxf7 11. Qxe7 Qc8 12. Be3 Qg4 13. Qg5 Qb4 14. Bd2 Qb6 15. Bc3 Bg6 16. Qe3 c5 17. Qe5 Rf6 18. Nd2 Raf8 19. Nf3 c4 20. Qd5+ Bf7 21. Qg5 Rg6 22. Qe3 Qc6 23. g3 Nf5 24. Qf4 Nxg3 25. fxg3 Bd5 26. Ne5 Rxf4 27. Nxc6 Bxc6 28. Be5 Rf7 29. dxc4 h5 30. Rf1 Re7 31. Rae1 Rg4 32. Bf4 Rxe1 33. Rxe1 h4 34. b3 g5 35. Bxc7 Re4 36. Rxe4 Bxe4 37. gxh4 gxh4 38. a3 Bxc2 39. b4 Bb3 40. c5 Be6 41. Kf2 Kf7 42. Ke3 Ke7 43. Kd4 Kd7 44. Bb8 a6 45. Kc3 Kc6 1/2-1/2

[Event "NED SB-19"]
[Site "Utrecht"]
[Date "1891.08.??"]
[Round "?"]
[White "Van Foreest, Arnold E"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "51"]
[EventDate "1891.08.23"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. exd5 exd5 5. Bd3 Be6 6. Nf3 c6 7. 0-0 Bd6 8. Re1 0-0 9. Bg5 Nbd7 10. Ne5 Qc7 11. f4 Bxe5 12. fxe5 Bg4 13. Qd2 Nh5 14. h3 Be6 15. g4 Ng3 16. Bh4 Ne4 17. Nxe4 dxe4 18. Bxe4 Qb6 19. c3 Nxe5 20. Bxh7+ Kxh7 21. Rxe5 Rae8 22. Qd3+ g6 23. Bf6 Bf5 24. Rxf5 Kh6 25. Rh5+ gxh5 26. g5# 1-0

[Event "NED SB-19"]
[Site "Utrecht"]
[Date "1891.08.??"]
[Round "?"]
[White "Van Rhijn, Arnoldus"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "D40"]
[PlyCount "55"]
[EventDate "1891.08.23"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. c4 c5 4. e3 a6 5. Nc3 Nf6 6. cxd5 Nxd5 7. Be2 b5 8. Nxd5 Qxd5 9. 0-0 Bb7 10. dxc5 Qxc5 11. Nd4 Nc6 12. Nxc6 Bxc6 13. Bf3 Rd8 14. Bxc6+ Qxc6 15. Qe2 Qd7 16. b3 Be7 17. Bb2 0-0 18. Rad1 Qc6 19. Qg4 f6 20. Rc1 Qd5 21. e4 Qd7 22. Rfd1 Bd6 23. e5 fxe5 24. Bxe5 Qe7 25. Bxg7 Rf4 26. Qg3 Qxg7 27. Qxf4 Qb2 28. Qg5+ 1-0

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Loman, Rudolf Johannes"]
[Result "0-1"]
[ECO "C47"]
[PlyCount "60"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Nxe5 Nxe5 5. d4 Ng6 6. e5 Ng8 7. f4 d5 8. Qf3 Bb4 9. g3 Bf5 10. Kd1 Bxc3 11. bxc3 Be4 12. Qg4 h5 13. Qh3 Bxh1 14. f5 Bf3+ 15. Be2 Bxe2+ 16. Kxe2 Qd7 17. Bg5 f6 18. e6 Qb5+ 19. Kd2 N6e7 20. Bf4 0-0-0 21. g4 Nh6 22. Bxh6 Rxh6 23. gxh5 Rdh8 24. Qg4 Rxh5 25. Qxg7 Rxh2+ 26. Kc1 Rh1+ 27. Kd2 R8h2+ 28. Ke3 Qe2+ 29. Kf4 Qe4+ 30. Kg3 Rg2# 0-1

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Malta, JF."]
[Result "1-0"]
[ECO "B00"]
[PlyCount "117"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qf6 5. Nf3 Ne5 6. Nxe5 Qxe5 7. Bd3 Bc5 8. 0-0 Nf6 9. Kh1 0-0 10. f4 Qe7 11. Nc3 d6 12. f5 Re8 13. Bg5 c6 14. Qf3 Bd4 15. Nd1 h6 16. Bh4 Qf8 17. c3 Be5 18. Ne3 d5 19. Bxf6 Bxf6 20. exd5 cxd5 21. Nxd5 Qd6 22. Be4 Rb8 23. Rad1 Qe5 24. Rde1 Bd7 25. g4 Bc6 26. Nxf6+ Qxf6 27. Bxc6 Rxe1 28. Rxe1 Qxc6 29. Qxc6 bxc6 30. b3 Kf8 31. h4 Rd8 32. Re2 Rd3 33. c4 Rh3+ 34. Rh2 Rg3 35. Rg2 Rh3+ 36. Kg1 Rxh4 37. Rg3 f6 38. Kg2 h5 39. g5 Rf4 40. gxf6 gxf6 41. Rf3 Rxf3 42. Kxf3 Kg7 43. Kg3 a5 44. Kh4 c5 45. Kxh5 Kh7 46. Kg4 Kh6 47. Kf4 Kh5 48. Ke4 Kg4 49. Kd5 Kxf5 50. Kxc5 Ke5 51. Kb6 f5 52. c5 f4 53. c6 f3 54. c7 f2 55. c8Q f1Q 56. Qc5+ Ke4 57. Qc4+ Qxc4 58. bxc4 Kd4 59. c5 1-0

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Messemaker, Christiaan"]
[Result "1-0"]
[ECO "C80"]
[PlyCount "65"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 7. Bxc6 dxc6 8. Nxe5 Be7 9. Qe2 0-0 10. Nxc6 bxc6 11. Qxe7 Qxe7 12. Rxe7 Ne6 13. Nc3 Rd8 14. b3 Kf8 15. Ba3 c5 16. Rxe6 Bxe6 17. Bxc5+ Kg8 18. d4 c6 19. Ne4 Bf5 20. f3 Rd7 21. c4 Bg6 22. Rd1 Rad8 23. Bb6 Re8 24. Nc5 Rde7 25. Nxa6 Re2 26. Nb4 Rb2 27. Nxc6 Ree2 28. d5 Rxg2+ 29. Kf1 Rxh2 30. Ne7+ Kh8 31. Nxg6+ hxg6 32. d6 Rxa2 33. d7 1-0

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Van Foreest, Arnold E"]
[Result "0-1"]
[ECO "C67"]
[PlyCount "74"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Be7 6. d5 Nd6 7. Nc3 Nd4 8. Nxd4 exd4 9. Qxd4 0-0 10. Bd3 f5 11. Ne2 Ne8 12. Nf4 Bf6 13. Qe3 g6 14. Re1 Ng7 15. Qg3 g5 16. Nh3 h6 17. f4 g4 18. Nf2 Bd4 19. c3 Nh5 20. cxd4 Nxg3 21. hxg3 d6 22. a4 h5 23. b4 h4 24. Kh2 Qf6 25. Bb2 Bd7 26. Ra2 Rae8 27. Rxe8 Rxe8 28. Nd1 Re1 29. Bc2 Qh6 30. Bc3 hxg3+ 31. Kxg3 Rh1 32. Kf2 Qxf4+ 33. Ke2 Qf1+ 34. Kd2 Qe1+ 35. Kc1 g3 36. Kb1 Qe2 37. b5 Rxd1+ 0-1

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Heemskerk, Jan Frederik"]
[Black "Van Rhijn, Arnoldus"]
[Result "1-0"]
[ECO "C65"]
[PlyCount "81"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 d6 5. d3 Be7 6. c3 0-0 7. h3 h6 8. Nh2 Nh7 9. f4 f5 10. fxe5 fxe4 11. exd6 Rxf1+ 12. Qxf1 Qxd6 13. dxe4 Ne5 14. Bf4 Qb6+ 15. Kh1 Ng6 16. Bc4+ Be6 17. Bxc7 Qc6 18. Nd2 Kh8 19. Bxe6 Qxe6 20. Nhf3 Rf8 21. Qb5 b6 22. Nd4 Qc8 23. Bg3 Ng5 24. Rf1 Rxf1+ 25. Qxf1 Bf6 26. Qf5 Ne7 27. Qxc8+ Nxc8 28. Bb8 a5 29. Bc7 Nf7 30. Nc4 Bd8 31. Bxd8 Nxd8 32. e5 Kg8 33. g4 Kf7 34. Kg2 Ne6 35. Nxe6 Kxe6 36. Kf3 Kd5 37. b3 g5 38. a4 b5 39. axb5 a4 40. Ne3+ Kxe5 41. bxa4 1-0

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Loman, Rudolf Johannes"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C82"]
[PlyCount "103"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[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 Bc5 10. Nbd2 f5 11. exf6 Nxf6 12. Re1 Qd6 13. Ng5 Nd8 14. Ndf3 0-0 15. Bc2 Bg4 16. Qd3 h6 17. Nh7 Ne4 18. Nxf8 Bxf2+ 19. Kf1 Bxe1 20. Kxe1 Kxf8 21. Kf1 Qf6 22. a4 Bxf3 23. Qxf3 Qxf3+ 24. gxf3 Nd6 25. Bf4 N8f7 26. Kf2 g5 27. Be3 Ke7 28. Bc5 Kd7 29. Bg6 Ne5 30. Bc2 Rf8 31. Bxd6 Rxf3+ 32. Kg2 Kxd6 33. axb5 axb5 34. Re1 Nd3 35. Re2 Rh3 36. Kxh3 Nf4+ 37. Kg4 Nxe2 38. Kh5 Kc5 39. Bd1 Nf4+ 40. Kxh6 Kc4 41. Kxg5 Nh3+ 42. Kf5 d4 43. cxd4 Kxd4 44. Bg4 Nf2 45. h4 Kd5 46. Bf3+ Kd6 47. Kf6 Nd3 48. h5 Ne5 49. h6 Nd7+ 50. Kg7 Nc5 51. h7 Ne6+ 52. Kf6 1-0

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Malta, JF."]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C80"]
[PlyCount "121"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 7. Bxc6 bxc6 8. Nxe5 Be7 9. Nc3 0-0 10. d4 Nb7 11. f4 Nd6 12. Qd3 Bb7 13. Bd2 f5 14. Na4 Nf7 15. Qxf5 Nxe5 16. Qxe5 Bd6 17. Qe4 Qf6 18. Rf1 c5 19. d5 Rae8 20. Qd3 Qf5 21. Qxf5 Rxf5 22. c4 Re4 23. b3 Bxf4 24. Bxf4 Rexf4 25. Rxf4 Rxf4 26. Nxc5 Bc8 27. Re1 Kf7 28. Rf1 Rxf1+ 29. Kxf1 d6 30. Na4 Bf5 31. Ke2 Kf6 32. h4 Be4 33. g3 Kf5 34. Ke3 Bg2 35. Nc3 Bh3 36. a3 Ke5 37. Na4 Bf5 38. Nb2 h6 39. Nd3+ Kf6 40. b4 Bd7 41. Kf4 Ba4 42. Nf2 Bd7 43. Ne4+ Ke7 44. c5 Be8 45. c6 Bf7 46. Nc3 Kf6 47. a4 g5+ 48. hxg5+ hxg5+ 49. Ke4 Bg6+ 50. Kd4 Kf5 51. a5 Kg4 52. b5 Kxg3 53. bxa6 Kf2 54. Nd1+ Ke2 55. Ne3 Bf7 56. a7 Bxd5 57. Nxd5 g4 58. a8Q g3 59. Qe8+ Kf2 60. Qe3+ Kf1 61. Qxg3 1-0

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Messemaker, Christiaan"]
[Black "Heemskerk, Jan Frederik"]
[Result "0-1"]
[ECO "C80"]
[PlyCount "64"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 7. Nxe5 Nxe5 8. Rxe5+ Be7 9. c3 Nxa4 10. Qxa4 0-0 11. d4 Bf6 12. Re1 Re8 13. Qd1 Rxe1+ 14. Qxe1 d6 15. Be3 Be6 16. Nd2 Bg5 17. Ne4 Bxe3 18. fxe3 Bd5 19. Ng3 Qg5 20. Qf2 Re8 21. Qf4 Qg6 22. b3 Qc2 23. Qf2 Qxc3 24. Re1 c5 25. Nf5 cxd4 26. Nxd4 Re5 27. h3 f5 28. Nf3 Bxf3 29. gxf3 f4 30. e4 Rg5+ 31. Kh2 Rg3 32. Rf1 Qc8 0-1

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Van Foreest, Arnold E"]
[Black "Heemskerk, Jan Frederik"]
[Result "1-0"]
[ECO "C14"]
[PlyCount "99"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 a6 8. Nf3 c5 9. Be2 Nc6 10. Qd2 0-0 11. 0-0 f6 12. exf6 Qxf6 13. dxc5 Qxf4 14. Qxf4 Rxf4 15. g3 Rb4 16. b3 Nxc5 17. a3 Rg4 18. b4 Nd7 19. Rae1 Rg6 20. Bd3 Rf6 21. Ng5 Nf8 22. Na4 e5 23. Nb6 Rb8 24. Nxd5 Rxf1+ 25. Rxf1 h6 26. Ne7+ Nxe7 27. Bc4+ Be6 28. Nxe6 Nxe6 29. Bxe6+ Kh8 30. Rf7 Nc6 31. c3 Nd8 32. Rf8+ Kh7 33. Bd5 Nc6 34. Rxb8 Nxb8 35. Bxb7 Kg6 36. c4 Kf6 37. c5 Ke7 38. Kf2 Kd7 39. Ke3 Kc7 40. c6 Nxc6 41. Bxc6 Kxc6 42. a4 Kd5 43. b5 axb5 44. axb5 Kc5 45. Ke4 Kxb5 46. Kxe5 Kc4 47. Kf5 Kd4 48. Kg6 Ke4 49. Kxg7 h5 50. Kg6 1-0

[Event "NED SB-18"]
[Site "The Hague"]
[Date "1890.??.??"]
[Round "?"]
[White "Van Rhijn, Arnoldus"]
[Black "Heemskerk, Jan Frederik"]
[Result "0-1"]
[ECO "C30"]
[PlyCount "68"]
[EventDate "1890.08.17"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. f4 Bc5 3. Nf3 d6 4. c3 Qe7 5. d3 h6 6. Qe2 Nc6 7. Be3 Bb6 8. Nbd2 Nf6 9. h3 Nh5 10. Bxb6 Ng3 11. Qd1 axb6 12. Rg1 exf4 13. Qc2 Nf5 14. a3 Ne3 15. Qb3 Na5 16. Qa2 Nc2+ 17. Kd1 Nxa1 18. Qxa1 0-0 19. Be2 Be6 20. Ke1 f5 21. Kf2 Nb3 22. Nxb3 Bxb3 23. Rf1 fxe4 24. dxe4 Qxe4 25. Re1 Rae8 26. Kf1 Bc4 27. Nd4 Bxe2+ 28. Rxe2 Qd3 29. Qe1 f3 30. gxf3 Rxf3+ 31. Kg2 Rxe2+ 32. Qxe2 Rg3+ 33. Kf2 Qxe2+ 34. Kxe2 Rxh3 0-1

