[Event "NED Team-ch 1930/31"]
[Site "Netherlands"]
[Date "1931.02.01"]
[Round "4.6"]
[White "Sonnenberg, M."]
[Black "Heufke Kantelaar, J."]
[Result "0-1"]
[ECO "D38"]
[PlyCount "66"]
[EventDate "1930.11.09"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "The Hague DD"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Bb4+ 5. Nc3 0-0 6. e3 b6 7. cxd5 exd5 8. Ne5 Bb7 9. Bd3 Qd6 10. Qc2 Ne4 11. Bf4 Bxc3+ 12. bxc3 Qa3 13. 0-0 Nc6 14. Nxc6 Bxc6 15. f3 Ba4 16. Qb1 Nxc3 17. Bxh7+ Kh8 18. Qf5 Ne2+ 19. Kh1 Nxf4 20. exf4 g6 21. Qh3 Kg7 22. f5 Rh8 23. f6+ Kxf6 24. Qh6 Qf8 25. Qf4+ Kg7 26. Bxg6 fxg6 27. Qxc7+ Qf7 28. Qe5+ Kh7 29. f4 Rae8 30. Qg5 Qe7 31. Qg3 Qe3 32. Qg5 Kg7 33. Qxd5 Rxh2+ 0-1

[Event "NED Team-ch 1929/30"]
[Site "Netherlands"]
[Date "1929.12.08"]
[Round "2.5"]
[White "Wertheim, Johan Hendrik"]
[Black "Sonnenberg, M."]
[Result "1-0"]
[ECO "D61"]
[PlyCount "83"]
[EventDate "1929.11.03"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "The Hague DD"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. a3 Be7 7. Qc2 0-0 8. Nf3 h6 9. h4 dxc4 10. Bxc4 Nd5 11. Bxe7 Qxe7 12. g4 Re8 13. Ke2 Nxc3+ 14. Qxc3 b5 15. Ba2 Bb7 16. Rac1 a5 17. Bb1 Nf8 18. Be4 Rec8 19. Qc5 Qxc5 20. dxc5 Rd8 21. Rhd1 Rd7 22. Ne5 Rc7 23. Rd6 Rac8 24. Rcd1 a4 25. R1d4 g6 26. Kd2 Kg7 27. Kc3 Nh7 28. Nd7 Nf6 29. Nxf6 Kxf6 30. Kb4 Ba8 31. Rd7 Rxd7 32. Rxd7 Ke5 33. Bf3 f5 34. gxf5 exf5 35. Rd6 g5 36. Rxh6 g4 37. Bg2 Rd8 38. Rd6 Rxd6 39. cxd6 Kxd6 40. h5 c5+ 41. Kxb5 Bxg2 42. h6 1-0

[Event "NED Team-ch 1929/30"]
[Site "Netherlands"]
[Date "1929.11.17"]
[Round "1.5"]
[White "Boer, A."]
[Black "Sonnenberg, M."]
[Result "0-1"]
[ECO "C58"]
[PlyCount "116"]
[EventDate "1929.11.03"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Utrecht"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Ba4 h6 9. Nf3 e4 10. Ng1 Bc5 11. d4 exd3 12. Qxd3 Qb6 13. Be3 0-0 14. Bxc5 Qxc5 15. Nc3 Bf5 16. Qf3 Bg4 17. Qf4 Rfe8+ 18. Nge2 Bxe2 19. Nxe2 Re4 20. Qd2 Rxa4 21. 0-0 Re4 22. c3 Nc4 23. Qc2 Rae8 24. Ng3 R4e6 25. b4 Qb6 26. a4 a6 27. a5 Qb5 28. Rad1 Nd6 29. h3 Nfe4 30. Ne2 Nf5 31. Nd4 Nxd4 32. Rxd4 Nf6 33. Qd3 Qxd3 34. Rxd3 Re4 35. g3 Rc4 36. Rb1 Rb8 37. Kg2 Rb5 38. Rd8+ Kh7 39. Ra8 Rxc3 40. Rxa6 Nd5 41. Ra8 Ra3 42. Rc8 Nxb4 43. Rxc6 Nxc6 44. Rxb5 Rxa5 45. Rb7 Kg6 46. Rb6 Rc5 47. f4 h5 48. Kf3 Rc3+ 49. Ke4 f6 50. g4 Ne7 51. gxh5+ Kf7 52. h4 Rc4+ 53. Kf3 Rxf4+ 54. Kg3 Re4 55. Kf3 Re5 56. Kg4 Kg8 57. Rb7 Kh7 58. Rd7 Ng8 0-1

[Event "NED Team-ch 1928/29 relegation"]
[Site "Netherlands"]
[Date "1929.06.23"]
[Round "1.4"]
[White "Heufke Kantelaar, J."]
[Black "Sonnenberg, M."]
[Result "0-1"]
[ECO "C50"]
[PlyCount "49"]
[EventDate "1929.06.23"]
[EventType "team"]
[EventRounds "1"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "The Hague DD II"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a3 Bc5 5. Bc4 d6 6. 0-0 Bg4 7. Bb5 0-0 8. Bxc6 bxc6 9. d3 Rb8 10. Na4 Nd7 11. h3 Bh5 12. g4 Bg6 13. Kg2 Bb6 14. c4 Qe7 15. Rb1 d5 16. Re1 dxc4 17. dxc4 Rfd8 18. Qc2 Bd4 19. Nxd4 exd4 20. f4 f5 21. gxf5 Bxf5 22. Qe2 Re8 23. b4 Bxe4+ 24. Qxe4 Qxe4+ 25. Rxe4 0-1

[Event "NED Team-ch 1928/29"]
[Site "Netherlands"]
[Date "1928.12.02"]
[Round "2.4"]
[White "Sonnenberg, M."]
[Black "Boer, A."]
[Result "1-0"]
[ECO "D55"]
[PlyCount "83"]
[EventDate "1928.11.04"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Utrecht"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. c4 e6 3. Nc3 b6 4. Nf3 Bb7 5. Bg5 Be7 6. Qc2 d5 7. e3 Nbd7 8. cxd5 exd5 9. Bd3 0-0 10. 0-0 Re8 11. Rac1 a6 12. Qb3 Rc8 13. Bf5 c6 14. Ne5 Ra8 15. Nxd7 Nxd7 16. Bxe7 Rxe7 17. Bxd7 Rxd7 18. Na4 Rb8 19. Qxb6 Qxb6 20. Nxb6 Re7 21. Na4 g6 22. b3 f5 23. Nc5 Bc8 24. Nd3 Rb6 25. Rc5 Bb7 26. Ne5 Re6 27. Rfc1 Kg7 28. Kf1 Rd6 29. Ke1 Kf6 30. f4 Ke7 31. Kd2 Re6 32. h3 Kd6 33. Nf7+ Kd7 34. Ne5+ Kd6 35. g4 Rf6 36. g5 Rf8 37. h4 Rc8 38. h5 gxh5 39. Rh1 Rb5 40. Rxh5 Re8 41. Rh6+ Kc7 42. Rxh7+ 1-0

[Event "NED Team-ch 1927/28"]
[Site "Netherlands"]
[Date "1928.02.12"]
[Round "4.5"]
[White "Sonnenberg, M."]
[Black "Van 't Sticht, JH."]
[Result "1/2-1/2"]
[ECO "E91"]
[PlyCount "59"]
[EventDate "1927.11.06"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Utrecht"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Nbd7 7. 0-0 b6 8. h3 Bb7 9. Qc2 Ne8 10. Be3 c5 11. d5 a6 12. Qd2 Rb8 13. Bh6 Bc8 14. Bxg7 Nxg7 15. Qh6 f6 16. Rad1 Rf7 17. Nh2 Qf8 18. Qd2 Qe8 19. f4 f5 20. Nf3 fxe4 21. Nxe4 Nf6 22. Ng3 b5 23. b3 bxc4 24. bxc4 Bf5 25. Nxf5 Nxf5 26. Ng5 Rf8 27. Ne6 Rf7 28. Ng5 Rf8 29. Ne6 Rf7 30. Ng5 1/2-1/2

[Event "NED Team-ch 1927/28"]
[Site "Netherlands"]
[Date "1928.01.08"]
[Round "3.4"]
[White "Sonnenberg, M."]
[Black "De Haas, Ephraim"]
[Result "1-0"]
[ECO "E91"]
[PlyCount "73"]
[EventDate "1927.11.06"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Rotterdam NRSV"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Nc6 7. h3 e5 8. d5 Nb8 9. Be3 a5 10. c5 Na6 11. cxd6 cxd6 12. 0-0 b6 13. Nd2 Nc5 14. a3 Ba6 15. Bxa6 Nxa6 16. Qa4 Nc5 17. Qb5 Ne8 18. b4 f5 19. bxc5 f4 20. cxb6 fxe3 21. fxe3 Qg5 22. Rxf8+ Bxf8 23. Nc4 Bh6 24. b7 Rb8 25. Qb6 Qg3 26. Qa7 Rxb7 27. Qxb7 Bxe3+ 28. Nxe3 Qxe3+ 29. Kh1 Qxc3 30. Rf1 Qc7 31. Qxc7 Nxc7 32. Rc1 Na6 33. Rc6 Nc5 34. Rxd6 Nxe4 35. Ra6 Nf2+ 36. Kg1 Nd3 37. d6 1-0

[Event "NED Team-ch 1927/28"]
[Site "Netherlands"]
[Date "1927.12.04"]
[Round "2.5"]
[White "Strick van Linschoten, Hendrik"]
[Black "Sonnenberg, M."]
[Result "1/2-1/2"]
[ECO "C54"]
[PlyCount "55"]
[EventDate "1927.11.06"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "The Hague DD"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Be3 Bb6 6. c3 d6 7. Nbd2 0-0 8. d4 exd4 9. cxd4 Qe7 10. Qc2 Bd7 11. a3 d5 12. Bd3 dxe4 13. Nxe4 Rae8 14. Nxf6+ Qxf6 15. 0-0-0 h6 16. h3 Be6 17. Bb5 Rd8 18. Bxc6 bxc6 19. Qe4 Bf5 20. Qe5 Qxe5 21. Nxe5 Be4 22. f3 Bd5 23. b4 f6 24. Nd3 Rfe8 25. Rhe1 Bb3 26. Rd2 Kf7 27. Nc5 Bxc5 28. dxc5 1/2-1/2

[Event "NED Team-ch 1926/27"]
[Site "Netherlands"]
[Date "1927.02.13"]
[Round "4.6"]
[White "Sonnenberg, M."]
[Black "Lohr, JH."]
[Result "0-1"]
[ECO "D52"]
[PlyCount "78"]
[EventDate "1926.11.07"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Amsterdam ASC"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. e3 Qa5 7. Nd2 Bb4 8. Qc2 dxc4 9. Bxf6 Nxf6 10. Bxc4 Nd5 11. Rc1 0-0 12. 0-0 Nf6 13. Nde4 Be7 14. f4 c5 15. d5 Nxe4 16. Nxe4 b5 17. d6 Bxd6 18. Nxd6 bxc4 19. Nxc4 Qc7 20. Rfd1 Bb7 21. Nd6 Bd5 22. Nc4 Rab8 23. b3 Rb4 24. Ne5 Rc8 25. Nd3 Rb5 26. Nb2 Rb4 27. Na4 c4 28. Nb2 Qb6 29. Rd4 Rf8 30. Nxc4 Bxc4 31. bxc4 Rb2 32. Qe4 Rxa2 33. c5 Qb2 34. Rcd1 Qf2+ 35. Kh1 Re2 36. h3 Rxe3 37. Qb7 Re2 38. Qc6 e5 39. fxe5 Re1+ 0-1

[Event "NED Team-ch 1926/27"]
[Site "Netherlands"]
[Date "1927.01.16"]
[Round "3.6"]
[White "Sonnenberg, M."]
[Black "Nieukerke, Karel J"]
[Result "1-0"]
[ECO "D66"]
[PlyCount "55"]
[EventDate "1926.11.07"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "The Hague DD"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Nbd7 5. Nf3 Be7 6. e3 c6 7. Bd3 0-0 8. 0-0 Re8 9. Rc1 h6 10. Bf4 Nf8 11. h3 Bd6 12. Ne5 Qe7 13. Bh2 N6d7 14. f4 Nf6 15. c5 Bc7 16. Kh1 N6h7 17. Qh5 f5 18. Rg1 Nf6 19. Qe2 Ne4 20. Bxe4 dxe4 21. g4 Bxe5 22. fxe5 Nh7 23. gxf5 exf5 24. Qh5 Kh8 25. d5 Ng5 26. Rxg5 Qxg5 27. Qxe8+ Kh7 28. Rg1 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1927.??.??"]
[Round "?"]
[White "Euwe, Max"]
[Black "Sonnenberg, M."]
[Result "1-0"]
[ECO "C56"]
[PlyCount "49"]
[EventDate "1927.??.??"]
[EventType "tourn"]
[EventRounds "2"]
[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. Bc4 Nf6 4. d4 exd4 5. 0-0 d5 6. exd5 Nxd5 7. Ng5 Be6 8. Re1 Qd6 9. Nxf7 Kxf7 10. Qf3+ Ke7 11. Bxd5 Ne5 12. Bg5+ Kd7 13. Bxe6+ Qxe6 14. Qe4 Re8 15. Qxd4+ Bd6 16. Nd2 Qg6 17. Qh4 Kc8 18. Ne4 Nf7 19. Nxd6+ Nxd6 20. Bf4 h6 21. Bxd6 Qxd6 22. Qa4 Qd7 23. Qxa7 Qd2 24. Qa8+ Kd7 25. Qa4+ 1-0

[Event "NED Team-ch 1926/27"]
[Site "Netherlands"]
[Date "1926.12.12"]
[Round "2.6"]
[White "Mannee, Johann FW"]
[Black "Sonnenberg, M."]
[Result "0-1"]
[ECO "C50"]
[PlyCount "90"]
[EventDate "1926.11.07"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Rotterdam NRSV"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Bg5 d6 6. Nc3 Be6 7. Qe2 a6 8. h3 Qe7 9. Nd5 Bxd5 10. Bxd5 h6 11. Bxf6 Qxf6 12. c3 0-0 13. 0-0 Nd8 14. Nh2 c6 15. Bb3 Ne6 16. Rad1 Nf4 17. Qf3 Rad8 18. d4 Bb6 19. Ng4 Qg5 20. Kh2 Kh8 21. Ne3 g6 22. g3 Ne6 23. h4 Qe7 24. dxe5 dxe5 25. Ng4 Kg7 26. Nxe5 Bc7 27. Ng4 Qxh4+ 28. Kg2 Qe7 29. Qe3 Ng5 30. Bc2 h5 31. Nh2 Rde8 32. Rfe1 Rh8 33. f4 Ne6 34. Nf3 h4 35. e5 hxg3 36. Kxg3 Rh5 37. Rh1 Reh8 38. Rxh5 Rxh5 39. Qd2 Nf8 40. Qd4 Qe6 41. Be4 Qh3+ 42. Kf2 Ne6 43. Qd2 Bb6+ 44. Ke2 Rh8 45. b4 Qg3 0-1

[Event "NED Team-ch 1926/27"]
[Site "Netherlands"]
[Date "1926.11.07"]
[Round "1.5"]
[White "Van Foreest, Arnold E"]
[Black "Sonnenberg, M."]
[Result "0-1"]
[ECO "C32"]
[PlyCount "92"]
[EventDate "1926.11.07"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Rotterdam NRSV"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. f4 d5 3. exd5 e4 4. Nc3 Nf6 5. Qe2 Bd6 6. d4 0-0 7. a3 Nbd7 8. g3 Nb6 9. Bh3 Nbxd5 10. Nxd5 Nxd5 11. c4 Nf6 12. Be3 c6 13. Bxc8 Qxc8 14. Rc1 Qd7 15. Kf1 b5 16. c5 Be7 17. Kg2 Nd5 18. Nh3 f5 19. Rhd1 Nxe3+ 20. Qxe3 Qd5 21. Ng1 a5 22. Ne2 b4 23. axb4 axb4 24. Ra1 Bf6 25. h4 Rfd8 26. Rxa8 Rxa8 27. Rd2 Ra1 28. Kf2 Qa2 29. Rc2 Qb1 30. Qb3+ Kf8 31. Nc1 Bxd4+ 32. Ke2 Bxb2 33. Qxb2 Qxb2 34. Rxb2 Rxc1 35. Rxb4 Rxc5 36. g4 fxg4 37. Rxe4 Kf7 38. Ke3 Kf6 39. Re8 h5 40. Kd4 Rd5+ 41. Ke4 Rd1 42. Rf8+ Ke7 43. Rg8 Kf7 44. Rc8 Re1+ 45. Kf5 g6+ 46. Kg5 g3 0-1

[Event "Match/Club Amsterdam VAS-Bremer SG 4-4"]
[Site "Groningen"]
[Date "1926.10.10"]
[Round "6"]
[White "Sonnenberg, M."]
[Black "Brinkmann, Herbert"]
[Result "1/2-1/2"]
[ECO "D35"]
[PlyCount "73"]
[EventDate "1926.10.09"]
[EventType "team"]
[EventRounds "8"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Bremer SG"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 c6 5. cxd5 exd5 6. Bg5 Be7 7. e3 Nbd7 8. Bd3 Nh5 9. Bxe7 Qxe7 10. 0-0 g6 11. e4 dxe4 12. Re1 0-0 13. Bxe4 Qd8 14. Qd2 Ndf6 15. Bc2 Kg7 16. h3 Nd5 17. Nxd5 cxd5 18. Re5 Nf6 19. Rae1 Re8 20. Rxe8 Nxe8 21. Qe3 Nf6 22. Qe5 h6 23. g4 Bd7 24. Bb3 Bc6 25. g5 hxg5 26. Nxg5 Qe8 27. f4 Qd7 28. Nh7 Re8 29. Qxf6+ Kxh7 30. Rxe8 Qxe8 31. Qe5 Qxe5 32. fxe5 Kg7 33. Kf2 f6 34. exf6+ Kxf6 35. Kf3 g5 36. Kg3 b6 37. a3 1/2-1/2

[Event "Amsterdam VAS Winter 1925/26"]
[Site "Amsterdam"]
[Date "1926.01.??"]
[Round "8"]
[White "Sonnenberg, M."]
[Black "Euwe, Max"]
[Result "0-1"]
[ECO "E61"]
[PlyCount "68"]
[EventDate "1925.12.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e3 d6 6. Bd3 Nbd7 7. 0-0 e5 8. dxe5 dxe5 9. Bc2 c6 10. Qe2 Qe7 11. e4 Nc5 12. Bg5 Ne6 13. Be3 Nh5 14. g3 Nd4 15. Bxd4 exd4 16. Nb1 Bg4 17. Bd3 Qd7 18. Nbd2 Bh3 19. e5 Nf4 20. Qe4 Nxd3 21. Qxd3 Bxf1 22. Rxf1 Rfe8 23. Re1 f6 24. exf6 Rxe1+ 25. Nxe1 Bxf6 26. Nef3 Re8 27. Kf1 Qh3+ 28. Kg1 Qf5 29. Qb3 Re7 30. Kf1 c5 31. Qa3 Bg5 32. Nxg5 Qxg5 33. Nf3 Qc1+ 34. Kg2 Qxc4 0-1

[Event "NED Team-ch 1925/26"]
[Site "Netherlands"]
[Date "1925.12.20"]
[Round "2.8"]
[White "Sonnenberg, M."]
[Black "Lohr, JH."]
[Result "1/2-1/2"]
[ECO "D67"]
[PlyCount "36"]
[EventDate "1925.11.01"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Amsterdam ASC"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Nbd7 5. Bg5 Be7 6. e3 0-0 7. Bd3 dxc4 8. Bxc4 c6 9. 0-0 Nd5 10. Bxe7 Qxe7 11. Rc1 N7f6 12. Ne5 Bd7 13. Bd3 Rac8 14. Qe2 c5 15. Bb1 cxd4 16. exd4 Bc6 17. Qd2 Nxc3 18. bxc3 Be4 1/2-1/2

[Event "NED Team-ch 1924/25"]
[Site "Netherlands"]
[Date "1925.03.08"]
[Round "5.7"]
[White "Reeders, HG."]
[Black "Sonnenberg, M."]
[Result "0-1"]
[ECO "C79"]
[PlyCount "70"]
[EventDate "1924.11.09"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam ASC"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 d6 6. d3 Bg4 7. Be3 Be7 8. Nbd2 0-0 9. Re1 Nd7 10. c3 f5 11. exf5 Bxf5 12. Bb3+ Kh8 13. Qc2 Qe8 14. Ne4 Qg6 15. Ng3 Bxd3 16. Qd2 e4 17. Ng5 Bxg5 18. Bxg5 Rae8 19. Bd1 Nf6 20. h4 h6 21. Be3 Ne5 22. h5 Qf7 23. b3 Nfg4 24. Bd4 d5 25. Bc5 Rg8 26. Bd4 b6 27. f3 exf3 28. Rxe5 f2+ 29. Bxf2 Nxe5 30. Bd4 Be4 31. b4 Qf6 32. Be2 Qh4 33. Bf2 Rgf8 34. Nxe4 Qxe4 35. Be3 Nf7 0-1

[Event "NED Team-ch 1924/25"]
[Site "Netherlands"]
[Date "1925.02.22"]
[Round "4.4"]
[White "Sonnenberg, M."]
[Black "Koetsheid, Petrus"]
[Result "0-1"]
[ECO "C14"]
[PlyCount "72"]
[EventDate "1924.11.09"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Rotterdam NRSV"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 e6 2. e4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 a6 7. Qg4 f6 8. Bf4 fxe5 9. dxe5 0-0 10. Bd3 Rf7 11. Nf3 Nf8 12. h5 Nc6 13. 0-0-0 Nb4 14. Bg6 Rxf4 15. Qxf4 hxg6 16. hxg6 Nxg6 17. Qg4 Qe8 18. Qh5 Bd7 19. Rd4 Qf7 20. g3 Qf5 21. Qxf5 exf5 22. a3 Nc6 23. Rxd5 Be6 24. Rdd1 Kf7 25. Nd5 Bxd5 26. Rxd5 Ke6 27. Rd2 Ngxe5 28. Re1 Kf6 29. Nxe5 Nxe5 30. Rde2 Bd6 31. f4 Ng4 32. c4 a5 33. Kc2 Rh8 34. Kd3 Rh3 35. Rg2 Bxf4 36. Kd4 Bxg3 0-1

[Event "NED Team-ch 1924/25"]
[Site "Netherlands"]
[Date "1924.12.21"]
[Round "3.4"]
[White "Sonnenberg, M."]
[Black "Strick van Linschoten, Hendrik"]
[Result "1-0"]
[ECO "D13"]
[PlyCount "55"]
[EventDate "1924.11.09"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "The Hague DD"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Qb6 7. Qb3 e6 8. e3 Nh5 9. Qxb6 axb6 10. Bc7 Bb4 11. Bxb6 Nf6 12. Bd3 Ne4 13. Bxe4 dxe4 14. Nd2 f5 15. 0-0 Bd7 16. f3 exf3 17. Nxf3 h6 18. a3 Bxc3 19. bxc3 g5 20. Rab1 Kf7 21. Bc5 Bc8 22. Nd2 Na5 23. Bb6 Ke7 24. Rb5 Nc6 25. Nc4 Ra6 26. Bc5+ Kd8 27. Rfb1 Rh7 28. Nd6 1-0

[Event "NED Team-ch 1923/24"]
[Site "Netherlands"]
[Date "1924.03.16"]
[Round "5.6"]
[White "Bening, O."]
[Black "Sonnenberg, M."]
[Result "0-1"]
[ECO "C83"]
[PlyCount "64"]
[EventDate "1923.11.18"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "The Hague DD"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Re1 0-0 11. Nbd2 Nc5 12. Bc2 d4 13. cxd4 Nxd4 14. Nxd4 Qxd4 15. Qf3 f6 16. exf6 Bxf6 17. Nb3 Bxb3 18. Bxb3+ Nxb3 19. Qxb3+ Kh8 20. Qc2 c5 21. a4 c4 22. Rb1 b4 23. Re4 Rae8 24. Rxe8 Rxe8 25. Be3 b3 26. Qc1 Qd3 27. Qd1 Qxd1+ 28. Rxd1 Bxb2 29. Rd6 c3 30. Kf1 c2 31. Rb6 Bc3 32. g3 b2 0-1

[Event "NED Team-ch 1923/24"]
[Site "Netherlands"]
[Date "1924.01.27"]
[Round "3.6"]
[White "Smeekes, Gerardus Ch"]
[Black "Sonnenberg, M."]
[Result "1/2-1/2"]
[ECO "C44"]
[PlyCount "75"]
[EventDate "1923.11.18"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Utrecht"]
[BlackTeam "Amsterdam VAS"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Qa4 dxe4 5. Nxe5 Qd5 6. Nxc6 bxc6 7. Bc4 Qd7 8. 0-0 Nf6 9. Re1 Be7 10. d3 exd3 11. Bxd3 0-0 12. Qc2 Rd8 13. Be2 h6 14. Nd2 Bc5 15. Ne4 Nxe4 16. Qxe4 Re8 17. Qc2 Bd6 18. Be3 c5 19. Rad1 Qe6 20. Bf3 Rb8 21. Bd2 Qd7 22. Rxe8+ Qxe8 23. Re1 Qb5 24. Bc1 Be6 25. a3 c4 26. Qe4 Bf5 27. Qc6 Qxc6 28. Bxc6 Be6 29. g3 Bc5 30. Kg2 Rd8 31. f4 Kf8 32. Be4 Re8 33. Rd1 Bg4 34. Bf3 Bxf3+ 35. Kxf3 Bb6 36. f5 f6 37. Bf4 Re7 38. h4 1/2-1/2

[Event "Amsterdam VAS Winter 1923/24"]
[Site "Amsterdam"]
[Date "1924.01.??"]
[Round "11"]
[White "Sonnenberg, M."]
[Black "Euwe, Max"]
[Result "0-1"]
[ECO "D35"]
[PlyCount "88"]
[EventDate "1923.12.??"]
[EventType "tourn"]
[EventRounds "17"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. cxd5 exd5 6. Bg5 Bf5 7. e3 Qb6 8. Qc1 Nbd7 9. Be2 Bd6 10. 0-0 0-0 11. Bxf6 Nxf6 12. Na4 Qc7 13. Nc5 a5 14. Nd3 Ne4 15. Nfe5 f6 16. Nf3 b6 17. Qd1 c5 18. Rc1 c4 19. Nde1 b5 20. h3 b4 21. Nd3 Qb7 22. Nc5 Bxc5 23. dxc5 Nxc5 24. Nh4 Bd3 25. f4 a4 26. Rf3 f5 27. Rf1 Bxe2 28. Qxe2 Nd3 29. Rcd1 Qe7 30. g3 Qf6 31. Rd2 Rfe8 32. Nf3 Re7 33. Rfd1 Rae8 34. Ne5 Nxe5 35. fxe5 Qxe5 36. Rxd5 Qxg3+ 37. Qg2 Qxe3+ 38. Kh1 Qe1+ 39. Rxe1 Rxe1+ 40. Kh2 R1e2 41. Rxf5 Rxg2+ 42. Kxg2 Re2+ 43. Rf2 Rxf2+ 44. Kxf2 b3 0-1

[Event "NED Team-ch 1922/23"]
[Site "Netherlands"]
[Date "1923.04.15"]
[Round "5.9"]
[White "Sonnenberg, M."]
[Black "Bahnert, A."]
[Result "1-0"]
[ECO "C10"]
[PlyCount "35"]
[EventDate "1922.12.03"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Rotterdam NRSV"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Bd3 Nxe4 7. Bxe4 Nf6 8. Bd3 Be7 9. 0-0 b6 10. Ne5 0-0 11. Nc6 Qd6 12. Qf3 Bd7 13. Nxe7+ Qxe7 14. Bg5 h6 15. Bh4 c6 16. Rfe1 Kh8 17. Re5 Rg8 18. Rh5 1-0

[Event "Amsterdam VAS Winter 1922/23"]
[Site "Amsterdam"]
[Date "1923.01.??"]
[Round "13"]
[White "Euwe, Max"]
[Black "Sonnenberg, M."]
[Result "1-0"]
[ECO "C83"]
[PlyCount "101"]
[EventDate "1922.12.??"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Nbd2 0-0 11. Re1 Nc5 12. Nf1 Nxb3 13. axb3 Qd7 14. Bg5 f6 15. exf6 Bxf6 16. Bxf6 Rxf6 17. Nd4 Nxd4 18. Qxd4 Qd6 19. b4 Raf8 20. Re2 Bc8 21. Rae1 Rf4 22. Qd2 c6 23. Re8 Rxe8 24. Rxe8+ Rf8 25. Qe3 Qf6 26. Nd2 Qf7 27. Rxf8+ Qxf8 28. Qe5 Qf7 29. h3 Qe6 30. Qxe6+ Bxe6 31. Nf3 Bd7 32. Ne5 Be8 33. f4 Kf8 34. Kf2 Ke7 35. Ke3 Kd6 36. Kd4 g6 37. Nd3 Bd7 38. Nc5 Bc8 39. g4 h5 40. f5 gxf5 41. gxh5 f4 42. Nd3 Bxh3 43. Nxf4 Bf5 44. Nd3 Bh7 45. Nc5 Bf5 46. Nxa6 Bh7 47. Nc5 Bf5 48. Nd3 Ke6 49. Ne5 Kd6 50. h6 Be4 51. Nf7+ 1-0

[Event "NED Team-ch 1921/22"]
[Site "Netherlands"]
[Date "1922.06.18"]
[Round "5.8"]
[White "Sonnenberg, M."]
[Black "Vijzelaar, Johannes"]
[Result "1-0"]
[ECO "C49"]
[PlyCount "61"]
[EventDate "1922.01.22"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "The Hague DD"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. 0-0 0-0 6. d3 Bxc3 7. bxc3 d6 8. Bg5 h6 9. Bh4 Qe7 10. Qd2 Nd8 11. Rfe1 Ne6 12. d4 g5 13. Bg3 Nf4 14. Bxf4 gxf4 15. g3 Nh5 16. Be2 Kh7 17. Nxe5 fxg3 18. fxg3 Nxg3 19. hxg3 dxe5 20. dxe5 Qxe5 21. Qf4 Qxc3 22. Bd3 Qc5+ 23. Kg2 f5 24. Rh1 Rf6 25. exf5 Qf8 26. g4 Bd7 27. Qxc7 Qg7 28. Rxh6+ Kxh6 29. Rh1+ Kg5 30. Rh5+ Kxg4 31. Be2# 1-0

[Event "NED Team-ch 1921/22"]
[Site "Netherlands"]
[Date "1922.04.09"]
[Round "3.10"]
[White "Sonnenberg, M."]
[Black "Van der Eerden, LJM"]
[Result "0-1"]
[ECO "C49"]
[PlyCount "56"]
[EventDate "1922.01.22"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam VAS"]
[BlackTeam "Utrecht"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. 0-0 0-0 6. d3 d6 7. Bg5 Ne7 8. Bxf6 gxf6 9. Nh4 Ng6 10. Nxg6 hxg6 11. f4 Kg7 12. Qf3 c6 13. Bc4 Bc5+ 14. Kh1 Rh8 15. Ne2 Rh4 16. fxe5 dxe5 17. c3 Bg4 18. Qg3 g5 19. Ng1 Qd7 20. Nf3 Bxf3 21. Qxf3 Rf4 22. Qg3 Rh8 23. Rxf4 exf4 24. Qf3 Be3 25. Re1 g4 26. Qf1 Rxh2+ 27. Kxh2 g3+ 28. Kh1 Qg4 0-1

