[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Calisch, JM."]
[Black "Heijmans, FG."]
[Result "0-1"]
[ECO "B07"]
[PlyCount "76"]
[EventDate "1851.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. d4 d6 3. d5 Nf6 4. Nc3 h6 5. h3 a6 6. Nf3 b5 7. a3 Be7 8. b4 c6 9. Bb2 cxd5 10. Nxd5 Nxe4 11. Bd3 Nf6 12. Nxf6+ Bxf6 13. Be4 Ra7 14. 0-0 Be6 15. Qd2 Rd7 16. c3 d5 17. Bc2 e4 18. Nd4 Bxd4 19. Qxd4 Qg5 20. Bc1 Qg6 21. Qe3 0-0 22. Bd2 f5 23. Qg3 Qf6 24. Bf4 Nc6 25. h4 d4 26. cxd4 Nxd4 27. Bd1 Bc4 28. Re1 Ne6 29. Be5 Qf7 30. Bf4 h5 31. Be2 Bxe2 32. Rxe2 Rd3 33. Re3 Rfd8 34. Rae1 Rxe3 35. Rxe3 Rd1+ 36. Kh2 Nd4 37. f3 exf3 38. gxf3 Qa2+ 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Heijmans, FG."]
[Black "Mohr, E."]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "106"]
[EventDate "1851.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d6 3. Bc4 Ne7 4. f4 Nd7 5. Nf3 d5 6. exd5 exd5 7. Bd3 Nc6 8. 0-0 Be7 9. Bb5 0-0 10. Ne5 Ncxe5 11. dxe5 Bc5+ 12. Kh1 c6 13. Bd3 Qh4 14. Nd2 Be3 15. Qf3 Bc5 16. Qe2 Re8 17. c3 Re6 18. Bf5 Re8 19. b4 Bb6 20. Qd3 Nf8 21. Nf3 Qe7 22. Bxc8 Raxc8 23. f5 f6 24. exf6 gxf6 25. Bh6 Nd7 26. Rae1 Qf7 27. Nh4 Bc7 28. Bd2 Qh5 29. Nf3 Ne5 30. Nxe5 Rxe5 31. Qg3+ Kf7 32. Bf4 Rg8 33. Qf2 Rxf5 34. Qe3 Bxf4 35. Rxf4 Rxf4 36. Qxf4 Kg6 37. h3 Qg5 38. Qf2 a6 39. Re3 Kf7 40. Qe2 Kg6 41. Kh2 Qf4+ 42. g3 Qf5 43. Rf3 Qe4 44. Re3 Qf5 45. Re7 Rg7 46. Rxg7+ Kxg7 47. h4 Qe4 48. Qd2 h6 49. Kg1 f5 50. Qd4+ Kg6 51. Qd2 Qe5 52. Kg2 Qe4+ 53. Kh2 Qe5 1/2-1/2

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Heijmans, FG."]
[Black "Mohr, E."]
[Result "1-0"]
[ECO "C01"]
[PlyCount "47"]
[EventDate "1851.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d6 3. c4 Ne7 4. Nc3 b6 5. Be2 Nd7 6. f4 Bb7 7. Nf3 Nf6 8. Qc2 a6 9. 0-0 g6 10. a4 Bg7 11. h3 Nh5 12. Kh2 Nc6 13. Qd1 Qf6 14. e5 dxe5 15. fxe5 Nxe5 16. dxe5 Qe7 17. Qe1 Bxf3 18. Bxf3 Qc5 19. Bxh5 Bxe5+ 20. Kh1 gxh5 21. Qe4 Rd8 22. Be3 Qa5 23. b4 f5 24. Qc6+ 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Heijmans, FG."]
[Black "Van 't Kruys, Maarten"]
[Result "0-1"]
[ECO "B30"]
[PlyCount "74"]
[EventDate "1851.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 bxc6 5. b3 d5 6. e5 e6 7. Bb2 Ne7 8. 0-0 Ng6 9. c3 Qc7 10. d4 cxd4 11. cxd4 c5 12. Qc2 Qb6 13. Rc1 cxd4 14. Bxd4 Qb7 15. Bc5 Bxc5 16. Qxc5 Bd7 17. Nbd2 Rc8 18. Qd6 f6 19. h4 Kf7 20. exf6 gxf6 21. h5 Ne7 22. Qf4 Qb8 23. Qxb8 Rxb8 24. Rc7 Rhd8 25. g4 h6 26. Re1 Nc6 27. Rc1 Rb6 28. a4 Ke7 29. Kg2 Kd6 30. R7xc6+ Rxc6 31. Re1 e5 32. Kh3 Rg8 33. Nh2 Rc3+ 34. Kh4 e4 35. f4 f5 36. g5 hxg5+ 37. fxg5 f4 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Heijmans, FG."]
[Black "Van Praug, J."]
[Result "1-0"]
[ECO "C54"]
[PlyCount "37"]
[EventDate "1851.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d5 6. exd5 Nxd5 7. 0-0 0-0 8. Ng5 f6 9. Ne4 Bb6 10. Kh1 Nce7 11. a3 a5 12. f4 exf4 13. Bxf4 Kh8 14. d4 Nxf4 15. Rxf4 c6 16. Ng3 Bc7 17. Rh4 Bxg3 18. Rxh7+ Kxh7 19. Qh5# 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Mohr, E."]
[Black "Heijmans, FG."]
[Result "0-1"]
[ECO "A00"]
[PlyCount "84"]
[EventDate "1851.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e3 d5 2. d3 c5 3. b3 Nc6 4. Bb2 Bf5 5. Nd2 Bg6 6. Be2 e5 7. a3 Bd6 8. Ngf3 a6 9. c4 d4 10. exd4 cxd4 11. Ne4 Bxe4 12. dxe4 Nf6 13. Bd3 a5 14. 0-0 Nd7 15. Bc1 0-0 16. Bg5 f6 17. Bc1 Nc5 18. Nh4 Ne7 19. g4 Qd7 20. Nf5 Nxf5 21. gxf5 g6 22. Bh6 Rf7 23. fxg6 hxg6 24. Qf3 Nxd3 25. Qxd3 Qg4+ 26. Qg3 Qxg3+ 27. fxg3 g5 28. h4 Be7 29. Rf5 Ra6 30. hxg5 fxg5 31. Bxg5 Rxf5 32. exf5 Bxg5 33. Rd1 Rd6 34. c5 Rd5 35. b4 Kf7 36. Kf2 e4 37. Rh1 Rxf5+ 38. Ke2 d3+ 39. Kd1 e3 40. Rh7+ Ke6 41. Rxb7 e2+ 42. Ke1 Rf1# 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Van 't Kruys, Maarten"]
[Black "Heijmans, FG."]
[Result "1-0"]
[ECO "A85"]
[PlyCount "89"]
[EventDate "1851.??.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. e3 Bb4 5. Bd3 b6 6. Nge2 Bb7 7. 0-0 Bd6 8. f3 0-0 9. e4 fxe4 10. fxe4 Ng4 11. e5 Qh4 12. h3 Rf2 13. Ne4 Bxe4 14. Bxe4 Ne3 15. Bxe3 Rxf1+ 16. Qxf1 Qxe4 17. Qf3 Qxf3 18. gxf3 Be7 19. d5 Kf7 20. f4 d6 21. Kg2 exd5 22. cxd5 c6 23. dxc6 Nxc6 24. Rc1 Nb4 25. a3 Nd3 26. Rc3 Nxb2 27. Bd4 Na4 28. Rc7 dxe5 29. Bxe5 Kf8 30. Nd4 Bf6 31. Ne6+ Kg8 32. Nxg7 Bd8 33. Rc4 b5 34. Rb4 Be7 35. Rxb5 Bxa3 36. Nh5 Be7 37. Rb7 Kf8 38. f5 Nc5 39. Rc7 Ne4 40. f6 Nxf6 41. Nxf6 Bxf6 42. Bxf6 a5 43. Rxh7 Ra6 44. Bd4 a4 45. Ra7 1-0

