[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "De Heer, Klaas"]
[Black "Kloos, Hermanus"]
[Result "1-0"]
[ECO "B00"]
[PlyCount "115"]
[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 b6 2. Bc4 Bb7 3. d3 e6 4. c3 c5 5. Nf3 Ne7 6. Ng5 h6 7. Nh3 d5 8. exd5 Nxd5 9. Bb5+ Nd7 10. d4 Nxc3 11. Bxd7+ Qxd7 12. bxc3 Bxg2 13. Rg1 Bxh3 14. Qf3 Rd8 15. Qxh3 cxd4 16. Qd3 g6 17. Qxd4 Qxd4 18. cxd4 Rxd4 19. Bb2 Re4+ 20. Kf1 Rg8 21. Nd2 Rh4 22. Rg2 Bd6 23. Rd1 Ke7 24. Kg1 Rc8 25. f3 Rc2 26. Bf6+ Kxf6 27. Ne4+ Rxe4 28. Rxc2 Bc5+ 29. Rxc5 Ra4 30. Rc2 Kf5 31. Kg2 h5 32. Rd7 f6 33. Re7 b5 34. Rec7 e5 35. R7c3 g5 36. a3 a5 37. Rb2 b4 38. axb4 axb4 39. Rc4 Ra8 40. Rcxb4 Rg8 41. h3 h4 42. Rd2 Rf8 43. Rd5 Kg6 44. Rb6 Kf5 45. Rdd6 Kg6 46. Rb7 Kf5 47. Rbd7 Kf4 48. Rd8 Rf7 49. R6d7 Rxd7 50. Rxd7 e4 51. Rd4 f5 52. fxe4 fxe4 53. Kf2 g4 54. hxg4 h3 55. g5 h2 56. Kg2 h1Q+ 57. Kxh1 Kf3 58. g6 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "De Heer, Klaas"]
[Black "Messemaker, Christiaan"]
[Result "0-1"]
[ECO "B20"]
[PlyCount "82"]
[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. Bc4 c5 3. c3 a6 4. d4 d5 5. exd5 exd5 6. Bb3 Be6 7. Qe2 Be7 8. h3 h6 9. Be3 cxd4 10. cxd4 Nf6 11. Nf3 Nc6 12. a3 Bd6 13. Nc3 0-0 14. Bc2 Re8 15. Qd2 Bd7 16. 0-0 Ne4 17. Qd3 Bf5 18. Nxd5 Ng3 19. Qd2 Nxf1 20. Kxf1 Bxc2 21. Qxc2 Bxa3 22. Nf4 Be7 23. Rd1 Rc8 24. Qd2 Bg5 25. d5 Ne5 26. Nxg5 hxg5 27. Nh5 Nc4 28. Qd4 Nxe3+ 29. fxe3 f6 30. d6 Re5 31. Qd3 Qd7 32. Nxf6+ gxf6 33. Qg6+ Kf8 34. Qh6+ Qg7 35. d7 Rd8 36. Qh5 Re7 37. Qg4 Rexd7 38. Rxd7 Qxd7 39. Qb4+ Kg7 40. Qa3 Qd3+ 41. Qxd3 Rxd3 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "De Heer, Klaas"]
[Black "Van 't Kruys, Maarten"]
[Result "0-1"]
[ECO "C41"]
[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. e4 e5 2. Nf3 d6 3. Bc4 c6 4. h3 h6 5. d3 a6 6. c3 d5 7. Bb3 Qd6 8. 0-0 Be6 9. Re1 f6 10. Qe2 Nd7 11. Na3 Ne7 12. Be3 g6 13. Rad1 Bg7 14. Nc2 f5 15. exd5 cxd5 16. c4 0-0 17. cxd5 Bxd5 18. Bxd5+ Nxd5 19. d4 e4 20. Nh2 f4 21. Bd2 Rae8 22. Qg4 h5 23. Qe2 b5 24. f3 e3 25. Ba5 Nb8 26. Nf1 Nc6 27. Bc3 b4 28. Bxb4 Ncxb4 29. Nxb4 Nxb4 30. Qc4+ Kh7 31. a3 Nd5 32. Re2 Rc8 33. Qd3 Rf7 34. Qe4 Re7 35. Qd3 Rec7 36. g3 fxg3 37. Nxe3 Nf4 38. Qd2 Nxe2+ 39. Qxe2 Bxd4 40. Kh1 Qe5 41. Qf1 Qxe3 42. b4 Rc1 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "De Heer, Klaas"]
[Black "Weimar, G."]
[Result "1-0"]
[ECO "C24"]
[PlyCount "95"]
[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. Bc4 Nf6 3. d3 h6 4. h3 Bc5 5. Nf3 d6 6. 0-0 c6 7. c3 b5 8. Bb3 a5 9. d4 exd4 10. cxd4 Bb6 11. e5 dxe5 12. Nxe5 0-0 13. Be3 Nd5 14. Bxd5 Qxd5 15. Nc3 Qe6 16. Qf3 Bd7 17. Nxd7 Qxd7 18. Nxb5 Na6 19. Nc3 Bxd4 20. Bxd4 Qxd4 21. Qxc6 Nb4 22. Qf3 Ra6 23. Rad1 Qh4 24. a3 Nc6 25. Rd6 Ne5 26. Qd5 Rxd6 27. Qxd6 Nc4 28. Qc5 Nxb2 29. Qxa5 Qc4 30. Qb4 Qxb4 31. axb4 Rb8 32. b5 Rc8 33. Rb1 Rxc3 34. Rxb2 Rc7 35. Kf1 Rb7 36. b6 Kf8 37. Ke2 Ke7 38. Kd3 Kd6 39. Kd4 Kc6 40. Ke5 Re7+ 41. Kf5 Kb7 42. g4 Re6 43. h4 Rxb6 44. Rxb6+ Kxb6 45. g5 hxg5 46. hxg5 Kc6 47. g6 Kd7 48. gxf7 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Messemaker, Christiaan"]
[Black "De Heer, Klaas"]
[Result "0-1"]
[ECO "D20"]
[PlyCount "94"]
[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 d5 2. c4 dxc4 3. e3 b5 4. a4 Qd7 5. axb5 Qxb5 6. Nc3 Qb3 7. Qxb3 cxb3 8. Bc4 Bd7 9. Nd5 Kd8 10. Bxb3 e6 11. Nc3 Nf6 12. Bd2 Bb4 13. f3 Ke7 14. Nge2 Rc8 15. 0-0 Kf8 16. e4 c5 17. d5 c4 18. Ba4 exd5 19. Bxd7 Nbxd7 20. exd5 Nxd5 21. Nxd5 Bxd2 22. Rfd1 Bg5 23. Nec3 Nb6 24. Ra6 Nxd5 25. Nxd5 Rd8 26. Rc6 Rac8 27. Rxc8 Rxc8 28. f4 Bd8 29. Rc1 Bb6+ 30. Kf1 Bd4 31. Rc2 Rc5 32. Nc3 Bxc3 33. Rxc3 Ke7 34. b3 Ke6 35. bxc4 Kf5 36. g3 a5 37. Ke2 Ke4 38. Re3+ Kd4 39. Re7 a4 40. Rxf7 Ra5 41. Rb7 a3 42. Rb1 a2 43. Ra1 Kxc4 44. Kd2 Kb3 45. Kc1 Rc5+ 46. Kd1 Kb2 47. Rxa2+ Kxa2 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1851.??.??"]
[Round "?"]
[White "Van 't Kruys, Maarten"]
[Black "De Heer, Klaas"]
[Result "1-0"]
[ECO "A01"]
[PlyCount "54"]
[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. b3 e5 2. Bb2 Nc6 3. g3 d5 4. Bg2 Nf6 5. e3 Bf5 6. d3 Bc5 7. Ne2 Qd6 8. c3 Rd8 9. 0-0 0-0 10. a3 a6 11. d4 exd4 12. cxd4 Bb6 13. b4 Ne7 14. Nbc3 Ba7 15. f3 Qe6 16. Qd2 Rfe8 17. Nf4 Qc6 18. Kh1 Nc8 19. Rfe1 Nb6 20. Bf1 Nc4 21. Bxc4 dxc4 22. d5 g5 23. e4 Bg6 24. Nxg6 hxg6 25. Qxg5 Qd6 26. Nb5 axb5 27. Bxf6 Rd7 1-0

