[Event "Donner sim"]
[Site "Groningen"]
[Date "1966.01.04"]
[Round "?"]
[White "Donner, Jan Hein"]
[Black "Wellner, Jan"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "41"]
[EventDate "1966.01.04"]
[EventType "simul"]
[EventRounds "1"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 Nxd5 5. Nf3 c5 6. e3 Nc6 7. Bd3 cxd4 8. exd4 Be7 9. 0-0 Nxc3 10. bxc3 0-0 11. Qc2 g6 12. Bh6 Re8 13. Rae1 Bf6 14. Re3 Qa5 15. Rfe1 Bd7 16. Ne5 Nxe5 17. dxe5 Be7 18. Rg3 f5 19. exf6 Bd6 20. Bxg6 Bxg3 21. Bxh7+ 1-0

[Event "NED-ch Voorwedstrijden Leiden-B"]
[Site "Leiden"]
[Date "1946.11.02"]
[Round "7"]
[White "Henneberke, Frans"]
[Black "Wellner, Jan"]
[Result "0-1"]
[ECO "C07"]
[PlyCount "121"]
[EventDate "1946.10.26"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. Bb5 cxd4 6. Nxd4 Bd7 7. N4b3 a6 8. exd5 axb5 9. dxc6 bxc6 10. Ne4 Qc7 11. Be3 f5 12. Nec5 Nf6 13. Qe2 Bd6 14. a3 0-0 15. 0-0-0 Nd5 16. Nd3 Nxe3 17. Qxe3 e5 18. Ndc5 Bc8 19. Kb1 Rf6 20. Qd3 Qb6 21. Qe3 Rb8 22. Rd2 b4 23. a4 f4 24. Qe2 Bxc5 25. a5 Qb5 26. Qxe5 Bf8 27. Qxb5 cxb5 28. Rd8 Rd6 29. Re8 Kf7 30. Rhe1 Rd1+ 31. Rxd1 Kxe8 32. Rd4 Bb7 33. Rxf4 Bxg2 34. Nd4 g6 35. f3 Bd6 36. Rg4 Bf1 37. f4 Kf7 38. f5 Kf6 39. fxg6 hxg6 40. h4 Ra8 41. Nc6 Bc4 42. b3 Be6 43. Rd4 Bg3 44. Nxb4 Rh8 45. a6 Bxh4 46. Rd6 Ke7 47. Rb6 Bf2 48. Rb7+ Kd6 49. Rxb5 Bd4 50. c4 Rh1+ 51. Kc2 Bf5+ 52. Nd3 Rh2+ 53. Kd1 Bxd3 54. Rd5+ Kc7 55. Rxd4 Bc2+ 56. Kc1 Bxb3 57. a7 Kb7 58. Rd7+ Ka8 59. Rg7 Rc2+ 60. Kb1 Rxc4 61. Rxg6 0-1

[Event "NED-ch Voorwedstrijden Leiden-B"]
[Site "Leiden"]
[Date "1946.11.01"]
[Round "6"]
[White "Wellner, Jan"]
[Black "Vinken, Alex"]
[Result "0-1"]
[ECO "C06"]
[PlyCount "74"]
[EventDate "1946.10.26"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 Qb6 8. Nf3 f6 9. exf6 Nxf6 10. 0-0 cxd4 11. Nexd4 Nxd4 12. Nxd4 Be7 13. Re1 0-0 14. Qe2 e5 15. Qxe5 Bd6 16. Qg5 Bd7 17. Rb1 Ng4 18. Qxd5+ Kh8 19. f4 Rae8 20. Rxe8 Rxe8 21. Bd2 Nf6 22. Qb3 Qc7 23. Rf1 Bc5 24. Kh1 Bxd4 25. cxd4 Bc6 26. Qa3 a6 27. Qc5 Qd7 28. Bf5 Re2 29. d5 Nxd5 30. Qc2 Ne3 31. Bxe3 Bxg2+ 32. Kg1 Rxc2 33. Rd1 Qe7 34. Bb6 Rd2 35. Rxd2 Qe1+ 36. Kxg2 Qxd2+ 37. Bf2 Qd5+ 0-1

[Event "NED-ch Voorwedstrijden Leiden-B"]
[Site "Leiden"]
[Date "1946.10.31"]
[Round "5"]
[White "Vlagsma, Chris"]
[Black "Wellner, Jan"]
[Result "0-1"]
[ECO "C97"]
[PlyCount "92"]
[EventDate "1946.10.26"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. d5 Bd7 13. Nbd2 Rfc8 14. Nf1 c4 15. g4 Nb7 16. Ng3 a5 17. Be3 Nc5 18. Qd2 Qb7 19. a3 Rab8 20. Bxc5 Rxc5 21. Nf5 Bxf5 22. gxf5 Nh5 23. Kh2 Rcc8 24. Rg1 Kh8 25. Rg4 Bf6 26. Rag1 b4 27. axb4 axb4 28. h4 bxc3 29. bxc3 h6 30. Ng5 Qe7 31. Nh3 Rb2 32. Qc1 Rcb8 33. R1g2 Nf4 34. Nxf4 exf4 35. Kh3 f3 36. Rg1 Bxc3 37. R4g3 Bf6 38. Rxf3 Bxh4 39. Rc3 Bxf2 40. Rg4 R2b4 41. Qf1 h5 42. Rf4 Bd4 43. Rxc4 Rxc4 44. Qxc4 Qg5 45. Qc7 Rb2 46. f6 Qxf4 0-1

[Event "NED-ch Voorwedstrijden Leiden-B"]
[Site "Leiden"]
[Date "1946.10.30"]
[Round "4"]
[White "Wellner, Jan"]
[Black "Van Scheltinga, Theo D"]
[Result "0-1"]
[ECO "C92"]
[PlyCount "64"]
[EventDate "1946.10.26"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 d6 6. Re1 Be7 7. c3 0-0 8. h3 b5 9. Bb3 Na5 10. d4 Nxb3 11. axb3 Bb7 12. d5 c5 13. Nbd2 Ne8 14. Nf1 g6 15. Bh6 Ng7 16. g4 f5 17. gxf5 gxf5 18. exf5 Rxf5 19. Ng3 Rf7 20. Bxg7 Rxg7 21. Kh2 Qd7 22. Re3 Rf8 23. Ne4 Bc8 24. Nfd2 Rf4 25. Qh5 Rh4 26. Qf3 Qe8 27. Qf6 Bxh3 28. Rg3 Bg4+ 29. Kg2 Qh5 30. Nf1 Rh3 31. Kg1 Rh1+ 32. Kg2 Bf3+ 0-1

[Event "NED-ch Voorwedstrijden Leiden-B"]
[Site "Leiden"]
[Date "1946.10.29"]
[Round "3"]
[White "Prins, Lodewijk"]
[Black "Wellner, Jan"]
[Result "1-0"]
[ECO "B53"]
[PlyCount "75"]
[EventDate "1946.10.26"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. dxc5 Nxe4 5. cxd6 e6 6. Bd3 Nxd6 7. 0-0 Be7 8. Qe2 0-0 9. Rd1 Qa5 10. Bf4 Rd8 11. Nbd2 Nc6 12. a3 f6 13. Nc4 Nxc4 14. Bxc4 Qf5 15. Bg3 g5 16. Bd3 Qg4 17. h3 Qh5 18. Bc4 Qf7 19. Re1 Bd6 20. Bxe6 Bxe6 21. Qxe6 Qxe6 22. Rxe6 Bxg3 23. fxg3 Kf7 24. Re4 Rd5 25. Rf1 Kg6 26. c4 Rd3 27. Re6 Rf8 28. b4 Kg7 29. b5 Na5 30. Re7+ Kg8 31. Rc7 Rxa3 32. Nd4 Rc3 33. c5 Rc4 34. Ne6 Re8 35. Rxf6 Rc1+ 36. Kh2 g4 37. Rg7+ Kh8 38. Rh6 1-0

[Event "NED-ch Voorwedstrijden Leiden-B"]
[Site "Leiden"]
[Date "1946.10.28"]
[Round "2"]
[White "Pruyt, PH."]
[Black "Wellner, Jan"]
[Result "1-0"]
[ECO "B72"]
[PlyCount "61"]
[EventDate "1946.10.26"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 g6 6. h3 Nc6 7. g4 Bg7 8. Be3 0-0 9. Bg2 Na5 10. Qe2 Be6 11. 0-0-0 Bc4 12. Qe1 Nd7 13. h4 Ne5 14. f3 h6 15. h5 g5 16. Nf5 b6 17. Nxg7 Kxg7 18. f4 gxf4 19. Bxf4 f6 20. Qe3 Nf7 21. e5 fxe5 22. Bxh6+ Nxh6 23. Qg5+ Kh7 24. Qg6+ Kh8 25. Qxh6+ Kg8 26. Qg5+ Kh8 27. Bxa8 Qxa8 28. Qxe7 Nb7 29. Nd5 Qc8 30. Qg5 Rf2 31. Qh6+ 1-0

[Event "NED-ch Voorwedstrijden Leiden-B"]
[Site "Leiden"]
[Date "1946.10.26"]
[Round "1"]
[White "Wellner, Jan"]
[Black "Van den Tol, Theo P"]
[Result "1/2-1/2"]
[ECO "A95"]
[PlyCount "76"]
[EventDate "1946.10.26"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 e6 2. g3 f5 3. c4 Nf6 4. Bg2 Be7 5. Nc3 0-0 6. Qb3 c6 7. Nf3 d5 8. 0-0 Kh8 9. Bf4 Nbd7 10. Rfe1 Qe8 11. Ne5 Rg8 12. Nxd7 Nxd7 13. Rad1 g5 14. Bc7 Bf6 15. cxd5 exd5 16. Qa3 Qf7 17. Kh1 Nf8 18. Be5 Bxe5 19. dxe5 Ng6 20. Qd6 Be6 21. f3 Rgd8 22. Qc5 Kg8 23. e4 fxe4 24. fxe4 Qe7 25. Qxe7 Nxe7 26. exd5 Nxd5 27. Ne4 h6 28. Nc5 Nc7 29. Nxb7 Rxd1 30. Rxd1 Bxa2 31. Bxc6 Rf8 32. Rd7 Ne6 33. Bd5 Bxd5+ 34. Rxd5 Rf2 35. Rd6 Rxb2 36. Rxe6 Rxb7 37. Rxh6 Rb6 38. Rh5 Rg6 1/2-1/2

