[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.09.25"]
[Round "6"]
[White "Salomons, Quinten"]
[Black "Dubbeldam, Stef"]
[Result "1/2-1/2"]
[ECO "A56"]
[WhiteElo "1819"]
[PlyCount "58"]
[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. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 0-0 7. Nge2 Nh5 8. h3 Bg5 9. g4 Bxc1 10. Qxc1 Nf6 11. Ng3 g6 12. Qd2 a6 13. a4 Nbd7 14. f3 Kg7 15. h4 Ne8 16. Ke2 h6 17. Rab1 Rh8 18. Rbg1 Nf8 19. h5 g5 20. Rb1 b6 21. Nf1 Bd7 22. Ne3 Qf6 23. b3 Nc7 24. Rb2 Nh7 25. Ra1 Rhb8 26. Rba2 Nf8 27. Ng2 Rb7 28. Qc2 Rab8 29. Ne1 Ra8 1/2-1/2

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Vleming, Stefan"]
[Black "Dubbeldam, Stef"]
[Result "0-1"]
[ECO "A60"]
[WhiteElo "1774"]
[PlyCount "52"]
[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. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 Bd6 6. e4 0-0 7. Bd3 Bc7 8. Bg5 d6 9. f4 Re8 10. Nf3 Nbd7 11. 0-0 Nf8 12. Qc2 Ng6 13. Rae1 Bg4 14. Nh4 a6 15. h3 Bd7 16. a4 Rb8 17. Nxg6 hxg6 18. Bxf6 gxf6 19. e5 f5 20. g4 dxe5 21. gxf5 exf4 22. Qg2 Qf6 23. fxg6 Qd4+ 24. Kh1 Qxd3 25. gxf7+ Kxf7 26. Rg1 Qxh3+ 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.12.20"]
[Round "3"]
[White "Dubbeldam, Stef"]
[Black "Van Vleuten, Ronald"]
[Result "0-1"]
[ECO "B01"]
[BlackElo "1622"]
[PlyCount "62"]
[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 d5 2. exd5 Qxd5 3. Nf3 Nf6 4. Nc3 Qd6 5. d4 c6 6. Ne5 Bf5 7. Bf4 Qb4 8. Rb1 Ne4 9. Qd3 Nd6 10. Qd2 e6 11. a3 Qa5 12. h4 Be7 13. g4 f6 14. gxf5 fxe5 15. Bxe5 Nxf5 16. Bc4 Nd7 17. Bxe6 Nxe5 18. dxe5 Qxe5+ 19. Qe2 Qxe2+ 20. Nxe2 Nxh4 21. Rh3 g5 22. Rd1 Rd8 23. Rhd3 Rf8 24. Rxd8+ Bxd8 25. Rd7 Rf6 26. Bh3 Rf7 27. Rd3 Bb6 28. Nd4 Bxd4 29. Bg4 Bxf2+ 30. Ke2 Bb6 31. Bh5 Ng6 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Zwinkels, Wim"]
[Black "Dubbeldam, Stef"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1806"]
[PlyCount "97"]
[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. Nc3 d6 3. f4 Nc6 4. Nf3 Bg4 5. Bb5 e6 6. Bxc6+ bxc6 7. d3 Be7 8. 0-0 Nf6 9. e5 Nd5 10. Ne4 0-0 11. c4 Bxf3 12. Qxf3 Nb4 13. exd6 Bxd6 14. Rf2 Be7 15. Rd2 Qd4+ 16. Nf2 Rac8 17. a3 Na6 18. Re2 Bh4 19. Be3 Bxf2+ 20. Bxf2 Qd6 21. Rd1 Rfd8 22. Re5 Rb8 23. Re2 Nc7 24. Be3 Ne8 25. Qf2 Rb3 26. Bxc5 Rxd3 27. Bxd6 Rxd1+ 28. Re1 R8xd6 29. Qe2 Rxe1+ 30. Qxe1 f6 31. c5 Rd3 32. Qxe6+ Kf8 33. b4 Rd1+ 34. Kf2 Ra1 35. Qxc6 Rxa3 36. b5 Rc3 37. Qc8 Rc4 38. g3 Rc2+ 39. Kg1 Rc1+ 40. Kg2 Rc2+ 41. Kh3 Rc3 42. c6 Rc2 43. Qa8 Rc5 44. Qxa7 Rxb5 45. c7 Nxc7 46. Qxc7 Rh5+ 47. Kg2 Rb5 48. Qd8+ Kf7 49. Qd7+ 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.08"]
[Round "1"]
[White "Dubbeldam, Stef"]
[Black "Hordijk, Frank"]
[Result "1-0"]
[ECO "B18"]
[BlackElo "1594"]
[PlyCount "45"]
[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 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Bd3 e6 8. Bf4 Bb4+ 9. c3 Be7 10. Ne4 Ndf6 11. Nc5 b6 12. Nb7 Qd7 13. Ba6 Nd5 14. Ne5 Qc7 15. Bg3 Bd6 16. Nxd6+ Qxd6 17. Nxg6 Qd7 18. Nxh8 b5 19. a4 Nge7 20. axb5 Nf5 21. Qe2 Nxg3 22. bxc6 Qd6 23. hxg3 1-0

