[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Hettfleisch, Maurice"]
[Black "Molsbergen, Chris"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1823"]
[BlackElo "1427"]
[PlyCount "21"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Qe7 5. 0-0 f6 6. c3 Na5 7. Bd3 c5 8. cxd4 cxd4 9. Nxd4 Qd8 10. e5 Nc6 11. Qh5+ 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.01.24"]
[Round "4"]
[White "Rosendaal, Tommie"]
[Black "Hettfleisch, Maurice"]
[Result "0-1"]
[ECO "D02"]
[BlackElo "1823"]
[PlyCount "46"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. Nf3 c5 4. e3 Nc6 5. c3 Qb6 6. Qb3 c4 7. Qxb6 axb6 8. Nbd2 b5 9. h3 b4 10. Be2 h6 11. 0-0 Bf5 12. Ne5 bxc3 13. bxc3 Nxe5 14. dxe5 Ne4 15. Nxe4 Bxe4 16. Rfd1 e6 17. Rd2 Bc5 18. Bd1 Ra3 19. Rc1 Ke7 20. Rb2 b6 21. Bc2 Rxc3 22. Kf1 Rb8 23. g4 Ba3 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.12.20"]
[Round "3"]
[White "Hettfleisch, Maurice"]
[Black "Van den Biggelaar, Don"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1823"]
[BlackElo "1735"]
[PlyCount "106"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. 0-0 Bc5 10. f3 Ng5 11. Be3 Qe7 12. f4 Ne4 13. Nd2 Nxd2 14. Qxd2 0-0 15. Nb3 Bb6 16. Qc3 f6 17. Bc5 Bxc5+ 18. Qxc5 Qe8 19. Rae1 fxe5 20. Rxe5 Qg6 21. Nd4 Rae8 22. c3 Qd6 23. Qxd6 cxd6 24. Rxe8 Rxe8 25. Kf2 c5 26. Nc2 Kf7 27. Ne3 d4 28. Nc4 Re6 29. Re1 dxc3 30. bxc3 Bb5 31. Rxe6 Kxe6 32. Nd2 d5 33. Ke3 h5 34. Nf3 Bf1 35. g3 Bg2 36. Ne5 a5 37. Nc6 d4+ 38. Nxd4+ cxd4+ 39. Kxd4 Kd6 40. c4 g6 41. c5+ Kc6 42. a3 Bf3 43. Kc4 Bg4 44. Kd4 Bf5 45. Kc4 Bd7 46. Kd4 Be8 47. Kc4 Bf7+ 48. Kd4 Ba2 49. Ke5 Kxc5 50. f5 gxf5 51. Kxf5 Bb3 52. Ke5 Bd1 53. Ke6 Kc4 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Henseler, Jorgen"]
[Black "Hettfleisch, Maurice"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2048"]
[BlackElo "1823"]
[PlyCount "65"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 Be7 8. Qd2 Nc6 9. 0-0-0 0-0 10. g4 Nxd4 11. Bxd4 b5 12. g5 Nd7 13. h4 b4 14. Ne2 Qa5 15. Kb1 e5 16. Be3 Nc5 17. Bh3 Rb8 18. Nc1 Na4 19. Nb3 Qc7 20. h5 a5 21. g6 Nc3+ 22. bxc3 bxc3 23. Qd3 a4 24. h6 hxg6 25. hxg7 Rd8 26. Ka1 axb3 27. cxb3 Kxg7 28. Qc2 Bxh3 29. Rxh3 Rxb3 30. Qxb3 Rb8 31. Rh7+ Kxh7 32. Qxf7+ Kh8 33. Rh1+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.06.21"]
[Round "9"]
[White "Hettfleisch, Maurice"]
[Black "Tolenaar, Jan"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "1751"]
[BlackElo "2048"]
[PlyCount "73"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. h3 Bxf3 5. Qxf3 Nf6 6. e5 Nfd7 7. d4 e6 8. Bd2 c5 9. 0-0-0 cxd4 10. Nb5 Nc6 11. Qg3 Rc8 12. f4 g6 13. h4 a6 14. h5 axb5 15. hxg6 fxg6 16. Bd3 Qe7 17. Bxg6+ Kd8 18. f5 Kc7 19. Bg5 Qc5 20. fxe6 Ndxe5 21. Rxh7+ Rxh7 22. Bxh7 Kb6 23. Bf5 Bd6 24. Bf4 Ne7 25. Bxe5 Nxf5 26. Qd3 Bxe5 27. Qxf5 Qc4 28. e7 Bf4+ 29. Kb1 Qe2 30. Rg1 Qe4 31. Qxc8 Qxe7 32. Qf5 Qe4 33. Qf6+ Kc5 34. Rf1 d3 35. Qxf4 dxc2+ 36. Kc1 Qxg2 37. Qf2+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.05.24"]
[Round "8"]
[White "Van der Knaap, Jan"]
[Black "Hettfleisch, Maurice"]
[Result "1/2-1/2"]
[ECO "B85"]
[WhiteElo "1769"]
[BlackElo "1751"]
[PlyCount "92"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Be2 e6 7. 0-0 Be7 8. Be3 0-0 9. Kh1 a6 10. a4 Bd7 11. f4 Qc7 12. Nb3 b6 13. Bf3 Rac8 14. Qe1 Rfd8 15. Qf2 Rb8 16. g4 Ne8 17. g5 Nb4 18. Bg2 f5 19. gxf6 Nxf6 20. Nd4 Nc6 21. Qg3 Nxd4 22. Bxd4 Nh5 23. Qf3 g6 24. Qe2 Rf8 25. f5 Bc6 26. fxg6 hxg6 27. Qg4 Kh7 28. Qxe6 Nf4 29. Qg4 Bd7 30. Qg3 Qc4 31. Be3 Nxg2 32. Qxg2 Rxf1+ 33. Rxf1 Rf8 34. Rxf8 Bxf8 35. Nd5 Qxa4 36. Nf6+ Kg7 37. Nxd7 Qxd7 38. Bd4+ Kh7 39. Bxb6 Bg7 40. c3 Qe6 41. Bd4 d5 42. Bxg7 Kxg7 43. exd5 Qe1+ 44. Qg1 Qe4+ 45. Qg2 Qe1+ 46. Qg1 Qe4+ 1/2-1/2

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.04.26"]
[Round "7"]
[White "Hettfleisch, Maurice"]
[Black "Kat, Rudolf"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "1751"]
[BlackElo "1954"]
[PlyCount "94"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Nc3 Bg4 4. h3 Bh5 5. exd5 cxd5 6. Bb5+ Nc6 7. g4 Bg6 8. Ne5 Rc8 9. Qf3 e6 10. d4 Bd6 11. Nxg6 hxg6 12. Bf4 Qf6 13. Nxd5 exd5 14. Qe3+ Nge7 15. Bxd6 Qxd6 16. 0-0-0 Kf8 17. c3 a6 18. Bd3 b5 19. Rde1 Na5 20. Re2 Nc4 21. Bxc4 dxc4 22. Rhe1 Rc7 23. Qf3 Kg8 24. g5 Rh4 25. Qa8+ Kh7 26. Qf8 Nf5 27. Qb8 Qf4+ 28. Kb1 Ne7 29. Qf8 Qxg5 30. Rxe7 Rxe7 31. Qxe7 Qf5+ 32. Kc1 Rxh3 33. d5 Qxf2 34. d6 Rh2 35. Re2 Qf1+ 36. Kd2 Qf4+ 37. Kd1 Rh1+ 38. Re1 Qf3+ 39. Qe2 Qd5+ 40. Qd2 Rxe1+ 41. Kxe1 Qh1+ 42. Ke2 Qh5+ 43. Ke1 Qh1+ 44. Kf2 Qh2+ 45. Ke3 Qh6+ 46. Ke2 Qh5+ 47. Ke1 Qh1+ 1/2-1/2

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.03.22"]
[Round "6"]
[White "Van den Biggelaar, Don"]
[Black "Hettfleisch, Maurice"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1710"]
[BlackElo "1751"]
[PlyCount "76"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 Nc6 6. Nf3 d6 7. Bc4 Nb6 8. Bb5 dxe5 9. 0-0 Bd7 10. dxe5 Nxe5 11. Be2 Nc6 12. Nc3 g6 13. Bf4 Bg7 14. Qd2 0-0 15. Rfd1 a6 16. Rac1 Be6 17. Qe3 Nd5 18. Nxd5 Bxd5 19. Bc4 e6 20. Bxd5 exd5 21. Qb3 Qf6 22. Qxb7 Qxf4 23. Qxc6 Bxb2 24. Rb1 Qf6 25. Qxd5 Rad8 26. Qb3 Rb8 27. Qc2 Rfc8 28. Qe2 a5 29. h3 a4 30. Rd7 a3 31. Rbd1 Bc3 32. Qd3 Rb2 33. Qd5 Qe6 34. Qxe6 fxe6 35. Ng5 Rxa2 36. Nxe6 Ra1 37. Rxa1 Bxa1 38. Ra7 Bb2 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.02.15"]
[Round "5"]
[White "Dobbelaar, Ruud"]
[Black "Hettfleisch, Maurice"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "1793"]
[BlackElo "1751"]
[PlyCount "79"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. d3 Be7 8. 0-0 0-0 9. a3 Be6 10. b4 Nd4 11. Rb1 Nxf3+ 12. Bxf3 c6 13. Ne4 Bd5 14. Bb2 Nd7 15. Nd2 Re8 16. Bg2 Bf8 17. Bh3 Be6 18. Bg2 f6 19. Nc4 Nb6 20. Qc2 Nd5 21. e4 Nc7 22. f4 Nb5 23. fxe5 Nd4 24. Qf2 Bxc4 25. exf6 Qxf6 26. Qxf6 gxf6 27. dxc4 Rad8 28. Rbd1 c5 29. Bxd4 cxd4 30. Rxf6 Bg7 31. Rf5 Rc8 32. e5 Bxe5 33. Bxb7 Rc7 34. Bd5+ Kh8 35. b5 Bd6 36. Rd3 Rce7 37. Kg2 Bc5 38. Bf3 Rc8 39. Bc6 Rd8 40. Rxc5 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.01.11"]
[Round "4"]
[White "Hettfleisch, Maurice"]
[Black "Groenendijk, Patrick"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "1751"]
[BlackElo "1715"]
[PlyCount "103"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Kf8 8. Nf3 b6 9. Bg5 Qc7 10. Bxe7+ Qxe7 11. Bd3 Ba6 12. 0-0 Qd7 13. Rfe1 Qa4 14. Ng5 Bxd3 15. cxd3 Qd7 16. dxc5 h6 17. cxb6 axb6 18. Qb4+ Qe7 19. Nf3 Nd7 20. Nd4 Rc8 21. Nb5 Qxb4 22. axb4 Ke7 23. Ra7 Ra8 24. Rea1 Rxa7 25. Rxa7 Rc8 26. f4 f6 27. Kf2 fxe5 28. fxe5 Rf8+ 29. Ke2 Rf5 30. d4 g5 31. Nd6 Rf8 32. Ra1 Nb8 33. Rf1 Rxf1 34. Kxf1 Kf8 35. b5 Nd7 36. c4 dxc4 37. Nxc4 Ke7 38. Ke2 Kd8 39. Nd6 Ke7 40. Kf3 Nf8 41. Nc8+ Kd7 42. Nxb6+ Kc7 43. Nc4 Ng6 44. g3 Ne7 45. Nd6 Nd5 46. Nf7 Nc3 47. Nxh6 Nxb5 48. Ke4 Kc6 49. h4 gxh4 50. gxh4 Nc3+ 51. Kd3 Nd1 52. Ng4 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.12.07"]
[Round "3"]
[White "Van der Scheer, Henk"]
[Black "Hettfleisch, Maurice"]
[Result "0-1"]
[ECO "E33"]
[WhiteElo "1910"]
[BlackElo "1751"]
[PlyCount "82"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. Nf3 0-0 6. e3 d6 7. a3 Bxc3+ 8. Qxc3 a5 9. b3 Re8 10. Bb2 e5 11. d5 Ne7 12. Be2 Ng6 13. 0-0 Ne4 14. Qc2 Ng5 15. b4 Nxf3+ 16. Bxf3 Qg5 17. Be4 f5 18. f4 exf4 19. exf4 Nxf4 20. Bf3 Re2 21. Qc3 Nh3+ 22. Kh1 Nf2+ 23. Rxf2 Rxf2 24. Re1 Bd7 25. Kg1 axb4 26. axb4 Rxb2 27. Qxb2 Re8 28. Rxe8+ Bxe8 29. Qe2 Bd7 30. Kf2 Qh4+ 31. Kf1 Kf7 32. h3 Qd4 33. b5 Kf6 34. g3 f4 35. gxf4 Bxh3+ 36. Bg2 Qxf4+ 37. Kg1 Bxg2 38. Kxg2 Qf5 39. Kg1 h5 40. Kg2 Qg4+ 41. Qxg4 hxg4 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.11.09"]
[Round "2"]
[White "Hettfleisch, Maurice"]
[Black "Oosterom, Erik"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "1751"]
[BlackElo "2062"]
[PlyCount "48"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Nc3 d4 4. Ne2 c5 5. c3 dxc3 6. bxc3 Nc6 7. Ng3 g6 8. d4 Bg7 9. e5 Bg4 10. Bc4 Nh6 11. Ne4 cxd4 12. Bxh6 Bxh6 13. Bxf7+ Kf8 14. e6 dxc3 15. Qb3 Bxf3 16. Qxc3 Bg7 17. Qxf3 Ne5 18. Qd1 Nxf7 19. Qf3 Qa5+ 20. Ke2 Qb5+ 21. Ke1 Qf5 22. Rc1 Qxf3 23. gxf3 Nd8 24. Rc7 Nxe6 0-1

