[Event "Leuven op 34th"]
[Site "Leuven"]
[Date "2023.11.09"]
[Round "1"]
[White "Pirard, Natan"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2309"]
[BlackElo "1937"]
[PlyCount "53"]
[EventDate "2023.11.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BEL"]
[SourceTitle "CB46_2023"]
[SourceDate "2023.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. c3 e5 6. d4 cxd4 7. cxd4 exd4 8. Bf4 a6 9. Ba4 Nge7 10. Bd6 b6 11. Nbd2 Bb7 12. e5 Nf5 13. Ne4 Na5 14. Nfg5 Bd5 15. Re1 b5 16. Bb3 Nxb3 17. axb3 h6 18. Nf6+ Bxf6 19. exf6+ Be6 20. Ne4 Qb6 21. Bc5 Qc6 22. Rc1 Qd5 23. Qf3 d6 24. Nxd6+ Kd7 25. Qxd5 Bxd5 26. Nxf5 gxf5 27. Re7+ 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.05"]
[Round "7"]
[White "De Vries, Leon"]
[Black "Bahr, Jan Hendrik"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "1926"]
[BlackElo "1709"]
[PlyCount "59"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. 0-0 Bf5 5. c4 e6 6. cxd5 exd5 7. d3 Be7 8. Qb3 Qb6 9. Qc2 h6 10. Nc3 Bh7 11. e4 dxe4 12. dxe4 0-0 13. Be3 Qc7 14. Rac1 Nbd7 15. Nd4 Rfe8 16. Qe2 Bf8 17. f3 a6 18. Rfd1 Rad8 19. Bh3 Qb8 20. Nf5 Nc5 21. Bf4 Qa7 22. Qf2 Bxf5 23. Bxf5 Qa8 24. Qe3 Ne6 25. Bxe6 Rxe6 26. Qb6 Nd7 27. Qc7 Bc5+ 28. Kg2 Bb6 29. Nd5 Bxc7 30. Nxc7 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.05"]
[Round "6"]
[White "Doenitz, Julian"]
[Black "De Vries, Leon"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "1460"]
[BlackElo "1926"]
[PlyCount "65"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nc3 a6 5. a3 d6 6. e3 Nc6 7. b4 Ba7 8. Nge2 0-0 9. 0-0 Rb8 10. Qa4 Ne7 11. d4 exd4 12. exd4 h6 13. h3 d5 14. c5 c6 15. Bf4 Ra8 16. Qb3 Bf5 17. a4 Ng6 18. Bd6 Re8 19. Rfd1 Qd7 20. Kh2 Bb8 21. Bxb8 Raxb8 22. b5 h5 23. Qb2 h4 24. b6 hxg3+ 25. fxg3 Re3 26. Qd2 Rbe8 27. Re1 Qe7 28. Rf1 Bd3 29. Rf3 Bxe2 30. Rxe3 Qxe3 31. Qxe3 Rxe3 32. Re1 Rxc3 33. Rxe2 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.04"]
[Round "5"]
[White "De Vries, Leon"]
[Black "Siol, Juergen"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1926"]
[BlackElo "1675"]
[PlyCount "76"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 b6 3. Bg2 Bb7 4. c4 g6 5. Nc3 Bg7 6. 0-0 Nf6 7. Rb1 0-0 8. a3 d6 9. e3 Qd7 10. Qc2 e6 11. Rd1 Rd8 12. b4 Qe7 13. d4 Na6 14. Bd2 Rac8 15. dxc5 dxc5 16. b5 Nb8 17. e4 h6 18. Bf4 Ne8 19. Be5 f6 20. Bxb8 Rxb8 21. e5 Kh7 22. Rxd8 Rxd8 23. Nh4 f5 24. Bxb7 Qxb7 25. f4 Bf8 26. Rd1 Be7 27. Ng2 Kg7 28. Rxd8 Bxd8 29. Qd3 Be7 30. a4 Kf7 31. Kf2 Ng7 32. h3 Ne8 33. g4 Ng7 34. gxf5 Nxf5 35. Ne4 Kg7 36. Ne3 Bh4+ 37. Ke2 Nd4+ 38. Kd1 a5 1/2-1/2

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.03"]
[Round "3"]
[White "Xue, Luka"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "D70"]
[WhiteElo "1925"]
[BlackElo "1926"]
[PlyCount "57"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nc3 Bg7 7. Be3 0-0 8. Qd2 Nc6 9. 0-0-0 Qd6 10. Nb5 Qd7 11. Bh6 Rd8 12. Bxg7 Kxg7 13. d5 a6 14. Nc3 Qe8 15. Qe3 Ne5 16. Qc5 Qd7 17. f4 Ng4 18. Nf3 f6 19. h3 Nh6 20. e5 Nf5 21. g4 Ng3 22. Rg1 Nxf1 23. Rgxf1 Re8 24. Nd4 Na4 25. Nxa4 Qxa4 26. Kb1 f5 27. b3 b6 28. Qxc7 Qd7 29. Ne6+ 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.02"]
[Round "1"]
[White "De Vries, Leon"]
[Black "Jeuken, Thomas"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "1926"]
[BlackElo "1471"]
[PlyCount "53"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 g6 3. Bg2 Bg7 4. c4 Ne7 5. Nc3 0-0 6. b3 Nbc6 7. Bb2 h6 8. 0-0 g5 9. e3 Ng6 10. d4 d6 11. a3 Rb8 12. b4 a6 13. Rc1 g4 14. Ne1 h5 15. b5 Nce7 16. Nd3 a5 17. c5 Nf5 18. cxd6 cxd6 19. Ne2 h4 20. Nef4 Qg5 21. Nxg6 fxg6 22. Nf4 b6 23. Rc7 d5 24. Qc2 hxg3 25. hxg3 Nxg3 26. fxg3 Rxf4 27. Rxf4 1-0

[Event "Eindhoven WLC op 13th"]
[Site "Eindhoven"]
[Date "2023.05.06"]
[Round "2"]
[White "Ruzhansky, Elias"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2217"]
[BlackElo "1856"]
[PlyCount "67"]
[EventDate "2023.05.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 0-0 13. g3 a5 14. h4 g6 15. Bh3 Bb7 16. Qd3 Bg7 17. 0-0 Bh6 18. Rfd1 Kg7 19. a3 bxa3 20. Qxa3 f5 21. exf5 gxf5 22. Nc3 Rf6 23. Nb5 Nb4 24. Nxb4 axb4 25. Qxb4 Bf3 26. Bg2 Bxg2 27. Kxg2 f4 28. Nxd6 Qd7 29. Ne8+ Qxe8 30. Qb7+ Rf7 31. Qxa8 Qe7 32. Rd8 Qb7+ 33. Qxb7 Rxb7 34. Rad1 1-0

[Event "Eindhoven WLC op 13th"]
[Site "Eindhoven"]
[Date "2023.05.05"]
[Round "1"]
[White "De Vries, Leon"]
[Black "Bhattacharjee, Sourav"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "1856"]
[BlackElo "2192"]
[PlyCount "109"]
[EventDate "2023.05.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 d5 5. Bg2 0-0 6. 0-0 Nbd7 7. c4 c6 8. Qc2 Nb6 9. d3 Bf5 10. Nbd2 Qc8 11. cxd5 cxd5 12. Rac1 Qxc2 13. Rxc2 Rac8 14. Rfc1 Rxc2 15. Rxc2 Rc8 16. Rxc8+ Nxc8 17. Be5 Bd7 18. Nb1 Ne8 19. Bxg7 Kxg7 20. Nc3 Nc7 21. Ne5 Be6 22. d4 f6 23. Nd3 Bf7 24. f3 Nd6 25. Kf2 b6 26. e3 Be8 27. Ke1 e6 28. Bf1 Nf5 29. Kf2 Kf7 30. Nb4 Ke7 31. Nc2 e5 32. dxe5 fxe5 33. Nxd5+ Nxd5 34. e4 Nc3 35. exf5 Nxa2 36. fxg6 Bxg6 37. Na3 Bf7 38. Bc4 Nc1 39. Nb5 a6 40. Nc7 a5 41. Nd5+ Bxd5 42. Bxd5 Kd6 43. Bg8 h6 44. Ke3 b5 45. h4 a4 46. bxa4 bxa4 47. g4 a3 48. g5 hxg5 49. h5 Ke7 50. h6 Kf6 51. h7 Kg7 52. Ke4 a2 53. Bxa2 Nxa2 54. Kxe5 Kxh7 55. Kf5 1/2-1/2

[Event "Groninger Combinatie op"]
[Site "Groningen"]
[Date "2022.05.26"]
[Round "1"]
[White "Elgersma, Onno"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2303"]
[BlackElo "1951"]
[PlyCount "109"]
[EventDate "2022.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. Re1 e5 6. Bxc6 dxc6 7. d3 Qc7 8. a4 a5 9. Be3 b6 10. h3 Ne7 11. Qd2 h6 12. Na3 Be6 13. Nc4 Bxc4 14. dxc4 Rd8 15. Qc1 Nc8 16. Bd2 Nd6 17. b3 Rd7 18. Re2 Re7 19. Rb1 f5 20. exf5 Nxf5 21. Bc3 0-0 22. Nd2 Nd6 23. Ne4 Nxe4 24. Rxe4 Rf4 25. Qe3 Rxe4 26. Qxe4 Qd6 27. Re1 Kf7 28. f4 Re6 29. fxe5 Qc7 30. Kh1 Kg8 31. Rf1 Qe7 32. Rf3 Qg5 33. Rd3 h5 34. h4 Qe7 35. Re3 Qf7 36. Kh2 Qe7 37. g3 Qc7 38. Kg2 Qf7 39. g4 Qe8 40. Rg3 hxg4 41. Rxg4 Qf7 42. Rg3 Qe8 43. Qg4 Qf7 44. Qg5 Kh7 45. Rh3 Qf5 46. Qxf5 gxf5 47. Re3 Kg6 48. Kf3 Kh5 49. Re2 Bh6 50. Rg2 Re8 51. Rg1 Rf8 52. Rd1 Kxh4 53. e6 f4 54. e7 Re8 55. Rd8 1-0

[Event "Eindhoven WLC op 12th"]
[Site "Eindhoven"]
[Date "2022.05.15"]
[Round "5"]
[White "Klapwijk, Leo"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1828"]
[BlackElo "1951"]
[PlyCount "66"]
[EventDate "2022.05.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. d3 d6 6. Be3 Nd4 7. h3 e6 8. Bf2 a6 9. Rb1 Ne7 10. Be2 Nec6 11. a3 b5 12. Na2 Nxf3+ 13. Bxf3 Nd4 14. c3 Nxf3+ 15. Qxf3 Bb7 16. 0-0 Rc8 17. Qe2 0-0 18. Rbc1 f5 19. exf5 exf5 20. c4 Re8 21. Qc2 Kh8 22. Nc3 b4 23. axb4 cxb4 24. Ne2 b3 25. Qd2 d5 26. Bd4 Bxd4+ 27. Nxd4 Qb6 28. Qc3 dxc4 29. dxc4 Bd5 30. c5 Qa7 31. Nxf5+ Kg8 32. Nh6+ Kf8 33. Qh8+ Ke7 1-0

[Event "Eindhoven WLC op 12th"]
[Site "Eindhoven"]
[Date "2022.05.14"]
[Round "4"]
[White "De Vries, Leon"]
[Black "Molenaar, Toine"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1951"]
[BlackElo "1823"]
[PlyCount "71"]
[EventDate "2022.05.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 e6 4. Nb5 Na6 5. e3 c6 6. Nc3 Nb8 7. Nf3 Be7 8. h3 0-0 9. Bd3 Nbd7 10. Ne5 c5 11. 0-0 Ne8 12. Nxd7 Bxd7 13. dxc5 Bxc5 14. e4 Qf6 15. Qg4 Qe7 16. exd5 e5 17. Qh5 f5 18. Rae1 e4 19. g4 Qf6 20. Bc4 fxg4 21. d6+ Kh8 22. Qxc5 Qxf4 23. Rxe4 Qxd6 24. Qxd6 Nxd6 25. Rd4 Nxc4 26. Rxd7 gxh3 27. Re1 Rf6 28. Ree7 Rg6+ 29. Kh2 Nxb2 30. Rxb7 Nc4 31. Rxa7 Rb8 32. Nd5 Nd6 33. Nf4 Rf6 34. Nxh3 Nf5 35. Rf7 Rxf7 36. Rxf7 1/2-1/2

[Event "Eindhoven WLC op 12th"]
[Site "Eindhoven"]
[Date "2022.05.14"]
[Round "2"]
[White "Plasmans, Bart"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1775"]
[BlackElo "1951"]
[PlyCount "71"]
[EventDate "2022.05.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Nge7 6. dxc5 Ng6 7. Be3 Ngxe5 8. Nxe5 Nxe5 9. Nd2 Be7 10. Be2 Qc7 11. b4 0-0 12. 0-0 b6 13. Nb3 Nc4 14. Bxc4 dxc4 15. cxb6 axb6 16. Nd4 Bb7 17. Re1 Bf6 18. Qg4 Rae8 19. Bg5 Bxd4 20. Qxd4 e5 21. Qd2 Qc6 22. f3 f6 23. Be3 f5 24. Qf2 Re6 25. b5 Qxb5 26. Rab1 Qa5 27. Bxb6 Qxc3 28. Bd4 Qxd4 29. Qxd4 exd4 30. Rxe6 c3 31. Rd6 Ba6 32. Rxd4 Be2 33. Rc1 Rc8 34. Kf2 Bb5 35. Rb4 Ba6 36. Rb6 1-0

[Event "Eindhoven WLC op 12th"]
[Site "Eindhoven"]
[Date "2022.05.13"]
[Round "1"]
[White "De Vries, Leon"]
[Black "Jansen, Bob"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1951"]
[BlackElo "2174"]
[PlyCount "66"]
[EventDate "2022.05.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 f5 3. Bg2 Nf6 4. 0-0 d5 5. d3 Nc6 6. c4 dxc4 7. dxc4 Qxd1 8. Rxd1 e5 9. Nc3 e4 10. Ne1 Be6 11. b3 Bd6 12. Nb5 Be5 13. Bf4 Bxf4 14. gxf4 Rc8 15. Nc2 Ke7 16. Nbd4 Nxd4 17. Rxd4 c5 18. Rd2 Rhd8 19. Rad1 Rxd2 20. Rxd2 Rc6 21. f3 Ra6 22. Ne3 Ra3 23. Nd1 Bd7 24. Kf2 Bc6 25. Nc3 Ra6 26. Ke3 Rb6 27. h3 a5 28. fxe4 fxe4 29. Nd5+ Bxd5 30. cxd5 Rb4 31. d6+ Kd7 32. Rd1 b5 33. Rc1 Kxd6 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.05"]
[Round "8"]
[White "De Vries, Leon"]
[Black "Timm, Jasper"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "1988"]
[PlyCount "74"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 c5 5. c4 dxc4 6. 0-0 Nc6 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. Nbd2 c3 10. bxc3 0-0 11. Ne1 Rd8 12. Nd3 Be7 13. Rb1 Nd5 14. Bb2 Nb6 15. Rbc1 Na4 16. Ba1 Bd7 17. Nb3 Rac8 18. c4 b6 19. c5 Nxc5 20. Nbxc5 bxc5 21. Nxc5 Be8 22. Nd3 Nb4 23. Nxb4 Bxb4 24. Bb7 Rxd1+ 25. Rxd1 Rc2 26. Rd8 Rc1+ 27. Kg2 Rxa1 28. Rxe8+ Bf8 29. Be4 g6 30. Ra8 Rxa2 31. Kf3 Kg7 32. Bc6 Bc5 33. Rc8 Bb6 34. Be8 Ra3+ 35. Kg2 Ra2 36. Kf3 Ra3+ 37. Kg2 Ra2 1/2-1/2

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.04"]
[Round "7"]
[White "Semling, Johannes"]
[Black "De Vries, Leon"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "1765"]
[BlackElo "1988"]
[PlyCount "100"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. c4 Be7 10. Be2 0-0 11. 0-0 a6 12. Nc3 f5 13. f4 Nd7 14. Kh1 Bf6 15. Rb1 g6 16. Qc2 exf4 17. Bxf4 Be5 18. b4 Bxf4 19. Rxf4 b6 20. Rbf1 Ne5 21. Bd3 Ra7 22. Ne2 Ng4 23. Qd2 Qh4 24. h3 g5 25. R4f3 Ne5 26. R3f2 Raf7 27. Qc2 f4 28. Nd4 Bxh3 29. gxh3 Qxh3+ 30. Rh2 Qxd3 31. Qxd3 Nxd3 32. Ne6 g4 33. Nxf8 Kxf8 34. Rh4 Ne5 35. c5 bxc5 36. bxc5 dxc5 37. Kg2 Nc4 38. Rc1 Ne3+ 39. Kf2 c4 40. d6 c3 41. Rh5 Rd7 42. Rh6 Kg7 43. Re6 c2 44. Ke2 h5 45. Kd3 g3 46. Ke4 g2 47. Re7+ Rxe7+ 48. dxe7 Kf7 49. Kxf4 Nf1 50. Re1 Ke8 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.03"]
[Round "6"]
[White "De Vries, Leon"]
[Black "Krause, Marianne"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "1988"]
[BlackElo "1548"]
[PlyCount "105"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 b6 3. Nc3 Bb7 4. Qc2 d6 5. Nf3 Nbd7 6. e3 e6 7. Be2 Be7 8. 0-0 0-0 9. a3 Qc8 10. b4 c5 11. Bb2 Rd8 12. Rfd1 cxd4 13. Rxd4 d5 14. cxd5 Nxd5 15. Rc4 Qb8 16. Bd3 h6 17. e4 Nxc3 18. Qxc3 Bf6 19. e5 Be7 20. Rc1 Rc8 21. Be4 Rxc4 22. Qxc4 Bxe4 23. Qxe4 Bg5 24. Rd1 Nf8 25. h4 Bd8 26. Nd4 Bc7 27. Nb5 Bd8 28. Qf3 Be7 29. Nc7 Qxc7 30. Qxa8 Bxh4 31. Qe4 Ng6 32. Rc1 Qd7 33. Qd4 Qb7 34. b5 Be7 35. Rc6 Bc5 36. Qd8+ Nf8 37. Qc7 Qxc7 38. Rxc7 Ng6 39. a4 Nf4 40. Rc8+ Kh7 41. Rd8 Kg6 42. Kf1 Kh7 43. Bd4 Bxd4 44. Rxd4 Nd5 45. Rc4 Kg6 46. g4 Kg5 47. Kg2 Nf4+ 48. Kf3 Nd3 49. Kg3 Nc5 50. f4+ Kg6 51. a5 Kh7 52. axb6 axb6 53. Rxc5 1-0

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.02"]
[Round "5"]
[White "Kreusch, Frank"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1789"]
[BlackElo "1988"]
[PlyCount "147"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nf6 5. d3 Bg4 6. Be2 e6 7. Nd4 Bb4 8. Bd2 Qe5 9. Nb3 Nc6 10. h3 Bxe2 11. Qxe2 0-0 12. Qxe5 Nxe5 13. a3 Bd6 14. 0-0 h6 15. Rfe1 Nc6 16. Ne4 Nd5 17. Rac1 Be5 18. c3 Rfd8 19. d4 Bf4 20. Rcd1 b6 21. g3 Bxd2 22. Nexd2 a5 23. Nf3 Rab8 24. Ne5 Nxe5 25. Rxe5 Nf6 26. Rde1 Rd5 27. Rxd5 Nxd5 28. Re5 Rd8 29. Kg2 Rd6 30. Kf3 Nf6 31. Nc1 Nd7 32. Re2 c5 33. Nb3 c4 34. Nd2 b5 35. a4 Rd5 36. axb5 Nb6 37. Re5 Kf8 38. Ke4 Ke7 39. Rxd5 exd5+ 40. Ke5 g6 41. g4 f6+ 42. Kf4 Kd6 43. h4 Ke6 44. b3 g5+ 45. hxg5 hxg5+ 46. Ke3 Kd6 47. bxc4 Nxc4+ 48. Nxc4+ dxc4 49. Kd2 Kc7 50. Kc2 Kb6 51. Kb2 Kxb5 52. Ka3 Kb6 53. Ka4 Ka6 54. d5 Kb6 55. d6 Kc6 56. d7 Kxd7 57. Kxa5 Kc6 58. Kb4 Kd5 59. f3 Ke5 60. Kxc4 Kf4 61. Kd5 Kxf3 62. c4 Kxg4 63. c5 Kf3 64. c6 g4 65. c7 g3 66. c8Q g2 67. Qf5+ Kg3 68. Qd3+ Kf2 69. Qd2+ Kf1 70. Qf4+ Ke1 71. Qg3+ Kf1 72. Qf3+ Kg1 73. Ke4 Kh2 74. Qf2 1-0

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.02.01"]
[Round "4"]
[White "De Vries, Leon"]
[Black "Pubantz, Jan"]
[Result "0-1"]
[ECO "A12"]
[WhiteElo "1988"]
[BlackElo "2286"]
[PlyCount "126"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. c4 e6 5. b3 Ngf6 6. 0-0 c6 7. Nc3 Bd6 8. d3 0-0 9. h3 Bh5 10. Qc2 Qe7 11. e4 dxe4 12. Nxe4 Nxe4 13. dxe4 Bxf3 14. Bxf3 Be5 15. Rb1 Rfd8 16. Be2 Bd4 17. Kg2 e5 18. Bd2 a5 19. f4 exf4 20. Rxf4 Ne5 21. Rbf1 Rd7 22. h4 b6 23. h5 h6 24. Rf5 Rd6 25. Bf4 f6 26. c5 bxc5 27. Bxe5 Bxe5 28. Qxc5 Qc7 29. R5f3 Rd2 30. Qc4+ Kh7 31. a4 Rad8 32. Re1 Qd7 33. Rf2 Bd4 34. Rf4 Be5 35. Rf2 Qc7 36. Rf3 Rb2 37. Rd3 Rxd3 38. Qxd3 Qd6 39. Qf3 Qe6 40. Rc1 Rxb3 41. Qf5+ Qxf5 42. exf5 Rxg3+ 43. Kf2 Rg5 44. Ke3 Kg8 45. Ke4 Rg2 46. Ke3 Bd4+ 47. Kxd4 Rxe2 48. Rxc6 Rf2 49. Rc8+ Kh7 50. Ke4 Rh2 51. Rc5 Rh4+ 52. Kf3 Rxa4 53. Kg3 Ra3+ 54. Kg2 Ra2+ 55. Kg3 Ra1 56. Kg2 a4 57. Ra5 a3 58. Ra7 Kg8 59. Ra8+ Kf7 60. Ra7+ Kf8 61. Ra8+ Ke7 62. Ra7+ Kd6 63. Rxg7 Ke5 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.01.31"]
[Round "3"]
[White "Werther, Jens"]
[Black "De Vries, Leon"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1699"]
[BlackElo "1988"]
[PlyCount "84"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Be2 b6 5. 0-0 Bb7 6. Nbd2 0-0 7. b4 Nd5 8. Bb2 Nxb4 9. c4 c5 10. Qb3 N4a6 11. d5 d6 12. Bxg7 Kxg7 13. Qc3+ Kg8 14. e4 Nd7 15. h4 Nc7 16. h5 e5 17. Qe3 Nf6 18. Ng5 Nxh5 19. Bxh5 gxh5 20. Qg3 Kh8 21. Qh4 f6 22. Nh3 Qe8 23. f4 Qg6 24. fxe5 dxe5 25. Rf3 Bc8 26. Raf1 Bxh3 27. Rxh3 Rg8 28. Qxf6+ Rg7 29. Qf3 Rag8 30. Rf2 Qg4 31. Nf1 Qxf3 32. Rhxf3 Ne8 33. Rf5 Nd6 34. Rxe5 Nxc4 35. Rxh5 Re8 36. Re2 Ne5 37. Rf5 c4 38. Rc2 b5 39. d6 Rd7 40. Rd2 c3 41. Rd5 c2 42. Rc5 Nc4 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.01.30"]
[Round "2"]
[White "De Vries, Leon"]
[Black "Richter, Nils"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1988"]
[BlackElo "2270"]
[PlyCount "80"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nd7 3. d4 Nb6 4. Bg2 Bf5 5. Nbd2 c6 6. b3 e6 7. 0-0 Be7 8. Bb2 Nf6 9. Ne5 0-0 10. Re1 a5 11. a4 Qc7 12. Rc1 Rfd8 13. c4 Bb4 14. cxd5 exd5 15. Bc3 Ba3 16. Ra1 Bd6 17. Nd3 Re8 18. Nc5 Nbd7 19. e4 dxe4 20. Ndxe4 Nxe4 21. Nxe4 Bxe4 22. Bxe4 Nf6 23. Bg2 Bb4 24. Qd2 Qd6 25. Bxb4 axb4 26. Rxe8+ Rxe8 27. Rc1 h5 28. a5 h4 29. a6 h3 30. Bxh3 bxa6 31. Bg2 Ne4 32. Bxe4 Rxe4 33. Rc4 a5 34. f3 Re8 35. Rc5 Ra8 36. Qf4 Qe6 37. Rh5 g6 38. Rh4 Re8 39. Qh6 Qe3+ 40. Qxe3 Rxe3 0-1

[Event "Reinstorf op"]
[Site "Reinstorf"]
[Date "2022.01.29"]
[Round "1"]
[White "Brandt, Marc"]
[Black "De Vries, Leon"]
[Result "0-1"]
[ECO "D75"]
[WhiteElo "1421"]
[BlackElo "1988"]
[PlyCount "38"]
[EventDate "2022.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nxc3 6. bxc3 Bg7 7. Nf3 0-0 8. 0-0 c5 9. d4 Nc6 10. Be3 Qa5 11. Qc1 cxd4 12. cxd4 Bg4 13. Rd1 Rfd8 14. Qb2 Qb6 15. Qxb6 axb6 16. Rab1 Bxf3 17. Bxf3 Nxd4 18. Rxb6 Nxf3+ 19. exf3 Rxd1+ 0-1

[Event "EU-Cup Online Gr-C"]
[Site "Tornelo INT"]
[Date "2021.03.28"]
[Round "6.4"]
[White "De Vries, Leon"]
[Black "Yagiz, Bora"]
[Result "0-1"]
[ECO "A09"]
[WhiteElo "2021"]
[BlackElo "1877"]
[PlyCount "74"]
[EventDate "2021.03.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "NET"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]
[WhiteTeam "Limburg Zuid"]
[BlackTeam "Zeitnot Express"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "TUR"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 d4 5. 0-0 c5 6. d3 Nc6 7. e3 e5 8. exd4 exd4 9. Re1+ Be7 10. Ne5 Nxe5 11. Rxe5 0-0 12. Bg5 Bd6 13. Re1 h6 14. Bxf6 Qxf6 15. Na3 a6 16. Nc2 Rb8 17. a4 Bd7 18. Qd2 Qg5 19. Qxg5 hxg5 20. b4 b6 21. b5 a5 22. Rad1 Bg4 23. f3 Bf5 24. Na1 Rbe8 25. Bf1 Re3 26. Rxe3 dxe3 27. Re1 Be5 28. Nc2 Bd4 29. Nxe3 Re8 30. Kf2 Kf8 31. h3 f6 32. f4 gxf4 33. gxf4 Bc8 34. Kf3 Bb7+ 35. Kf2 Kf7 36. Re2 Kg6 37. Re1 Kh5 0-1

[Event "EU-Cup Online Gr-C"]
[Site "Tornelo INT"]
[Date "2021.03.28"]
[Round "9.4"]
[White "Keymer, Vincent"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "D75"]
[WhiteElo "2591"]
[BlackElo "2021"]
[PlyCount "73"]
[EventDate "2021.03.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "NET"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]
[WhiteTeam "Deizisau"]
[BlackTeam "Limburg Zuid"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "NED"]

1. Nf3 g6 2. d4 Nf6 3. c4 Bg7 4. g3 0-0 5. Bg2 d5 6. cxd5 Nxd5 7. 0-0 c5 8. dxc5 Na6 9. Ng5 Nf6 10. c6 bxc6 11. Nc3 Rb8 12. Qxd8 Rxd8 13. Rd1 Rxd1+ 14. Nxd1 h6 15. Ne4 Nxe4 16. Bxe4 Nb4 17. Bf4 e5 18. Be3 f5 19. Bg2 Nc2 20. Bxa7 Ra8 21. Rc1 Nb4 22. Bc5 Nxa2 23. Ra1 Bb7 24. e4 Bf8 25. Bxf8 Kxf8 26. exf5 gxf5 27. Ne3 f4 28. Nc4 fxg3 29. hxg3 Nb4 30. Rxa8+ Bxa8 31. Nxe5 Kg7 32. f4 Nd5 33. Bxd5 cxd5 34. Nf3 Kf6 35. Nd4 Bb7 36. Kf2 h5 37. b4 1-0

[Event "EU-Cup Online Gr-C"]
[Site "Tornelo INT"]
[Date "2021.03.27"]
[Round "1.4"]
[White "De Vries, Leon"]
[Black "Krejci, Jan1111"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2021"]
[BlackElo "2540"]
[PlyCount "88"]
[EventDate "2021.03.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "NET"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]
[WhiteTeam "Limburg Zuid"]
[BlackTeam "Cesky Lev"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "CZE"]

1. Nf3 Nf6 2. c4 e6 3. g3 a6 4. Bg2 b5 5. b3 Bb7 6. 0-0 Be7 7. Bb2 0-0 8. d3 d6 9. Qc2 Nbd7 10. Nbd2 c5 11. Rfd1 Rc8 12. Rac1 Qb6 13. e3 Qa7 14. Qb1 h6 15. d4 cxd4 16. Bxd4 Qa8 17. Nh4 bxc4 18. Nxc4 Ne4 19. Ba1 Rfd8 20. Na5 Rxc1 21. Rxc1 Bd5 22. Qc2 Bxh4 23. gxh4 Nec5 24. Bxd5 Qxd5 25. Rd1 Qa8 26. Rxd6 Ne4 27. Rd4 Ndf6 28. Nc6 Rxd4 29. Bxd4 Qb7 30. f3 Nd6 31. Bxf6 gxf6 32. Kf2 Qb5 33. Ne7+ Kf8 34. Qc7 Ne8 35. Qa7 Qe5 36. f4 Qd6 37. Nc8 Qa3 38. Kf3 f5 39. h5 Nf6 40. Nb6 Qd6 41. Nc4 Qd1+ 42. Kf2 Ne4+ 43. Kg2 Qe2+ 44. Kh3 Qg4# 0-1

[Event "EU-Cup Online Gr-C"]
[Site "Tornelo INT"]
[Date "2021.03.27"]
[Round "3.4"]
[White "De Vries, Leon"]
[Black "Schulze, Lara"]
[Result "0-1"]
[ECO "A09"]
[WhiteElo "2021"]
[BlackElo "2269"]
[PlyCount "68"]
[EventDate "2021.03.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "NET"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]
[WhiteTeam "Limburg Zuid"]
[BlackTeam "Werder Bremen"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "GER"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 d4 5. 0-0 c5 6. d3 Nc6 7. e3 Bd6 8. exd4 cxd4 9. b4 Bxb4 10. Qa4 0-0 11. Bb2 Bc5 12. Na3 e5 13. Rfe1 Re8 14. Ng5 Bf5 15. Rad1 Rc8 16. Qb5 Qb6 17. Qxb6 Bxb6 18. Nb5 Bc5 19. Bd5 Nxd5 20. cxd5 Nb4 21. Ne4 Bxe4 22. dxe4 a6 23. a3 axb5 24. axb4 Bxb4 25. Re2 Bc3 26. Rb1 b4 27. Bc1 Ra8 28. f4 d3 29. Rg2 exf4 30. Bxf4 Rxe4 31. d6 f6 32. h4 Kf7 33. Bd2 Ke6 34. Rb3 Rc8 0-1

[Event "EU-Cup Online Gr-C"]
[Site "Tornelo INT"]
[Date "2021.03.27"]
[Round "2.4"]
[White "Guerrero Olmos, Sergio"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2372"]
[BlackElo "2021"]
[PlyCount "67"]
[EventDate "2021.03.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "NET"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]
[WhiteTeam "Gijon 64"]
[BlackTeam "Limburg Zuid"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 c5 4. e3 cxd4 5. exd4 Bg7 6. c3 d6 7. Be2 0-0 8. 0-0 Nfd7 9. h3 e5 10. Bh2 f5 11. Na3 Nc6 12. Nb5 Nb6 13. Qb3+ Kh8 14. a4 a6 15. Nxd6 Qxd6 16. Qxb6 Rd8 17. dxe5 Qe7 18. Bc4 Be6 19. Bxe6 Qxe6 20. Rad1 Rd7 21. Ng5 Qe7 22. Rxd7 Qxd7 23. e6 Qe7 24. Nf7+ Kg8 25. Re1 Nd8 26. Bd6 Qe8 27. Nxd8 Rxd8 28. c4 Bxb2 29. c5 Bd4 30. Qxb7 Qxa4 31. Qf7+ Kh8 32. e7 Re8 33. Qf8+ Rxf8 34. exf8Q# 1-0

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.29"]
[Round "8"]
[White "De Vries, Leon"]
[Black "Labruyere, Roger"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "1934"]
[BlackElo "1933"]
[PlyCount "85"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3 g6 7. d4 cxd4 8. Nxd4 Bg7 9. Be3 Nf6 10. f3 0-0 11. 0-0 Rfc8 12. b3 a6 13. Qd2 Nxd4 14. Bxd4 b5 15. Rac1 e5 16. Be3 bxc4 17. Na4 c3 18. Nxc3 Rd8 19. Bg5 Qa7+ 20. Kh1 Rd7 21. Bxf6 Bxf6 22. Nd5 Bd8 23. g4 Kg7 24. Rc4 h6 25. Qc3 Bb6 26. Rc1 Bd4 27. Qd3 a5 28. Rc7 Rxc7 29. Rxc7 Qb8 30. Qc4 Bc5 31. Rd7 Qe8 32. Rb7 Rc8 33. Nc7 Qc6 34. Ne6+ Kg8 35. Nxc5 d5 36. exd5 Qxc5 37. d6 Qxc4 38. bxc4 Kf8 39. d7 Rd8 40. c5 Ke7 41. c6 Ra8 42. c7 Kxd7 43. Rb8 1-0

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.28"]
[Round "7"]
[White "Torenbosch, Jorn"]
[Black "De Vries, Leon"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1821"]
[BlackElo "1934"]
[PlyCount "100"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. b4 cxb4 3. a3 d5 4. exd5 Qxd5 5. Nf3 e5 6. axb4 Bxb4 7. Na3 Nf6 8. Nb5 0-0 9. c3 Bc5 10. Be2 Bd7 11. Nc7 Bxf2+ 12. Kf1 Qd6 13. Nxa8 Bc5 14. d4 exd4 15. cxd4 Bb4 16. Rxa7 Nc6 17. Ra1 Nd5 18. Bc4 Re8 19. Bxd5 Qxd5 20. Nc7 Qc4+ 21. Kf2 Rc8 22. Na8 Bc3 23. Ra4 Nb4 24. Nb6 Nd3+ 25. Kf1 Bxa4 26. Qxa4 Qxa4 27. Nxa4 Nxc1 28. Kf2 Nb3 29. Ke3 Ba5 30. Rb1 b5 31. Nb2 Rc2 32. Nd1 Nc1 33. Rxb5 Re2+ 34. Kf4 Bc7+ 35. Ne5 f6 36. Kf3 fxe5 37. Rc5 e4+ 38. Kg4 Rxg2+ 39. Kf5 g6+ 40. Kxe4 Rg4+ 41. Ke3 Bf4+ 42. Kf3 Rh4 43. d5 Nb3 44. Rc8+ Kf7 45. h3 Bd6 46. Nf2 Nd4+ 47. Ke3 Nf5+ 48. Kf3 Rd4 49. Ne4 Rd3+ 50. Ke2 Re3+ 0-1

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.27"]
[Round "6"]
[White "De Vries, Leon"]
[Black "Van der Meer, Henk"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "1934"]
[BlackElo "1785"]
[PlyCount "85"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. Bg5 d6 6. e3 Nbd7 7. Be2 a6 8. Qc2 Rb8 9. 0-0 c6 10. b4 Re8 11. Rfd1 Nf8 12. h3 h6 13. Bh4 g5 14. Bg3 Ng6 15. Bd3 Nf8 16. Nd2 Be6 17. Bf5 Qd7 18. Bxe6 Qxe6 19. Nce4 Rbc8 20. Nxf6+ Qxf6 21. Rab1 Ng6 22. a4 h5 23. b5 axb5 24. axb5 Qe6 25. Qe4 Qd7 26. bxc6 bxc6 27. Nf3 f5 28. Qc2 h4 29. Bh2 g4 30. hxg4 fxg4 31. Qxg6 gxf3 32. gxf3 Rf8 33. Qg4 e6 34. Bf4 Rf6 35. Kh2 Rcf8 36. Rg1 Kh7 37. d5 cxd5 38. cxd5 Qe7 39. Bg5 exd5 40. Bxf6 Rxf6 41. Qh5+ Bh6 42. Qxd5 Qe5+ 43. Qxe5 1-0

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.26"]
[Round "5"]
[White "Akotchik, Victor"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "B87"]
[WhiteElo "2095"]
[BlackElo "1934"]
[PlyCount "85"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. Bc4 e6 7. Qe2 b5 8. Bb3 Be7 9. g4 b4 10. Na4 Bb7 11. f3 Nc6 12. Be3 Qa5 13. Nxc6 Bxc6 14. Nb6 Rb8 15. g5 Nd7 16. Nxd7 Kxd7 17. Qd2 Qe5 18. 0-0-0 a5 19. Bf4 Qc5 20. Be3 Qb5 21. Qd4 e5 22. Qd2 Rhf8 23. Qg2 a4 24. Bd5 Bxd5 25. Rxd5 Qc4 26. Kb1 Rfc8 27. h4 b3 28. cxb3 axb3 29. a3 Qc2+ 30. Qxc2 Rxc2 31. Bd2 Kc6 32. Rd3 Rc4 33. Bb4 Kd7 34. Rhd1 Rd4 35. Rxd4 exd4 36. Rxd4 Ke6 37. Rd3 h6 38. f4 hxg5 39. hxg5 g6 40. Rxb3 d5 41. exd5+ Kxd5 42. Rd3+ Ke4 43. Rc3 1-0

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.24"]
[Round "4"]
[White "Noordenbos, Daan"]
[Black "De Vries, Leon"]
[Result "1/2-1/2"]
[ECO "B95"]
[WhiteElo "2023"]
[BlackElo "1934"]
[PlyCount "54"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qf3 h6 8. Bh4 Be7 9. 0-0-0 Qc7 10. g4 Nbd7 11. Bg3 Ne5 12. Qe2 g5 13. h4 Rg8 14. hxg5 hxg5 15. Bxe5 dxe5 16. Nb3 Bd7 17. Qf3 Rg6 18. Rh8+ Bf8 19. Be2 0-0-0 20. Qe3 Kb8 21. Nc5 Bxc5 22. Rxd8+ Ka7 23. Nb5+ axb5 24. Qc3 Qxd8 25. Qxc5+ Qb6 26. Qa3+ Qa6 27. Qc5+ Qb6 1/2-1/2

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.23"]
[Round "3"]
[White "De Vries, Leon"]
[Black "Waardenburg, Feline"]
[Result "1-0"]
[ECO "D70"]
[WhiteElo "1934"]
[BlackElo "1769"]
[PlyCount "75"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nc3 Bg7 7. Be3 0-0 8. Qd2 e6 9. h4 Nc6 10. 0-0-0 e5 11. d5 Nd4 12. h5 c6 13. hxg6 fxg6 14. Bh6 Rf7 15. Bxg7 Rxg7 16. Nge2 Nc4 17. Qd3 cxd5 18. Nxd4 exd4 19. Qxd4 Qg5+ 20. Kb1 Ne3 21. Nxd5 Nxd5 22. Qxd5+ Qxd5 23. Rxd5 Be6 24. Rd6 Re7 25. Rxe6 Rxe6 26. Bc4 Rae8 27. Rd1 Kf7 28. Rd6 Kf6 29. Rxe6+ Rxe6 30. Bxe6 Kxe6 31. Kc2 h5 32. Kd3 h4 33. f4 Kf6 34. Ke3 g5 35. f5 b5 36. b4 a6 37. a3 Ke5 38. Kf3 1-0

[Event "Eindhoven WLC op 10th"]
[Site "Eindhoven"]
[Date "2019.05.26"]
[Round "5"]
[White "De Vries, Leon"]
[Black "Grooten, Herman"]
[Result "0-1"]
[ECO "A63"]
[WhiteElo "1707"]
[BlackElo "2334"]
[PlyCount "64"]
[EventDate "2019.05.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 0-0 9. 0-0 a6 10. a4 Nbd7 11. Bf4 Qc7 12. Re1 Re8 13. e4 Ng4 14. Rc1 Nde5 15. Nxe5 Nxe5 16. b3 Bg4 17. f3 Bd7 18. Bf1 Qa5 19. Bd2 b5 20. Kg2 Qb6 21. h3 f5 22. f4 Nf7 23. exf5 gxf5 24. Kh2 Rxe1 25. Bxe1 Re8 26. Bf2 Nh6 27. axb5 Qa5 28. Qh5 axb5 29. Qf3 Qa3 30. Rb1 c4 31. bxc4 b4 32. Qh5 Qxc3 0-1

[Event "Eindhoven WLC op 10th"]
[Site "Eindhoven"]
[Date "2019.05.24"]
[Round "1"]
[White "De Vries, Leon"]
[Black "Van Dooren, Dirk"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1707"]
[BlackElo "2371"]
[PlyCount "92"]
[EventDate "2019.05.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. Bxf6 exf6 5. e3 Be6 6. g3 Nc6 7. Bg2 Qd7 8. Nge2 Bf7 9. a3 h5 10. Qd3 Ne7 11. Nc1 a5 12. Nb3 b6 13. Qb5 a4 14. Nd2 Ra5 15. Qxd7+ Kxd7 16. Bf1 c6 17. Bd3 h4 18. 0-0-0 g6 19. Nf3 g5 20. gxh4 Bh5 21. Be2 Bxf3 22. Bxf3 Rxh4 23. h3 Nc8 24. Be2 Nd6 25. f3 Ra8 26. Bd3 b5 27. Rde1 Re8 28. Nd1 Ke6 29. Nf2 Kf7 30. Re2 Be7 31. Rhe1 Bd8 32. c3 Bb6 33. Kd2 c5 34. Kd1 cxd4 35. exd4 Rxe2 36. Rxe2 Rf4 37. Re3 Nc4 38. Bxc4 bxc4 39. Ke2 Bc7 40. Kf1 Rh4 41. Kg2 Rh8 42. Nh1 Bf4 43. Re2 Re8 44. Rxe8 Kxe8 45. Nf2 Kf7 46. Nd1 Kg6 0-1

[Event "Hilversum op-B"]
[Site "Hilversum"]
[Date "2018.06.22"]
[Round "1"]
[White "Binnendijk, Daan"]
[Black "De Vries, Leon"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1945"]
[BlackElo "1728"]
[PlyCount "166"]
[EventDate "2018.06.22"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 c5 5. c3 Nc6 6. Nbd2 Bd6 7. Bg3 0-0 8. Bd3 b6 9. Ne5 Bb7 10. 0-0 Ne7 11. Qf3 c4 12. Bc2 b5 13. Rfe1 Rc8 14. Bh4 Ng6 15. Nxg6 fxg6 16. Qh3 Qd7 17. e4 Bf4 18. Rad1 Bxd2 19. Rxd2 dxe4 20. Bxf6 Rxf6 21. Bxe4 Bxe4 22. Rxe4 Rf5 23. Rde2 Rc6 24. Qe3 Kf7 25. g4 Rf6 26. Re5 Rd6 27. Qe4 Rd5 28. f4 a6 29. Kg2 Rd6 30. Kg3 Qc6 31. Rc5 Qxe4 32. Rxe4 Rd5 33. Re5 g5 34. Rxg5 Rxg5 35. Rxg5 h6 36. Rc5 g5 37. f5 exf5 38. gxf5 h5 39. h4 g4 40. Rc7+ Kg8 41. Rc5 Kg7 42. Kf4 Kf8 43. Re5 Rf7 44. Kg3 Re7 45. Rc5 Re2 46. f6 Kf7 47. Rxh5 Kxf6 48. Kxg4 Rg2+ 49. Kf3 Rxb2 50. Rh6+ Kg7 51. Rxa6 Rh2 52. Kg4 Rg2+ 53. Kf4 Rh2 54. Ra5 Rxh4+ 55. Kg5 Rh3 56. Rxb5 Rxc3 57. Rb7+ Kf8 58. Rc7 Rc1 59. Kf6 Ke8 60. Ke5 Kd8 61. Rc5 Kd7 62. Kd5 c3 63. a4 c2 64. a5 Ra1 65. Rxc2 Rxa5+ 66. Ke4 Rh5 67. Rg2 Kd6 68. Rg6+ Kd7 69. Kd3 Kc7 70. Kc4 Kd7 71. d5 Kc7 72. Kc5 Kd7 73. Rg7+ Kc8 74. Kd6 Rh6+ 75. Ke7 Rh1 76. Rg8+ Kb7 77. d6 Re1+ 78. Kd8 Re2 79. d7 Re3 80. Re8 Rh3 81. Ke7 Rh7+ 82. Kd6 Rh6+ 83. Ke5 Kc6 1-0

