[Event "DEN-ch32 Mesterskabet"]
[Site "Copenhagen"]
[Date "1941.04.14"]
[Round "9"]
[White "Klausen, Viggo"]
[Black "Poulsen, Christian"]
[Result "0-1"]
[ECO "A58"]
[PlyCount "76"]
[EventDate "1941.04.09"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. g3 c5 3. d5 g6 4. c4 d6 5. Nc3 Bg7 6. Bg2 0-0 7. e4 Nbd7 8. f4 b5 9. cxb5 a6 10. bxa6 Bxa6 11. Nge2 Nb6 12. 0-0 Ng4 13. h3 Nf6 14. Kh2 Nfd7 15. Rb1 Rb8 16. Qc2 Re8 17. Rd1 Qc7 18. b3 e6 19. Bb2 c4 20. b4 exd5 21. exd5 Re3 22. Bc1 Rd3 23. a4 Nf6 24. a5 Nbd7 25. b5 Bc8 26. b6 Qc5 27. Nb5 Ng4+ 28. hxg4 Nf6 29. Rf1 Nxg4+ 30. Kh1 Bf5 31. Nxd6 Qxd6 32. Qxc4 Rc8 33. Qb4 Qd8 34. b7 Rxg3 35. bxc8Q Bxc8 36. Kg1 Qh4 37. Rf2 Rd3 38. Qc5 Qh2+ 0-1

[Event "DEN-ch32 Mesterskabet"]
[Site "Copenhagen"]
[Date "1941.04.09"]
[Round "1"]
[White "Nielsen, Bjorn"]
[Black "Klausen, Viggo"]
[Result "1-0"]
[ECO "B70"]
[PlyCount "125"]
[EventDate "1941.04.09"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Qd2 h6 8. Bxf6 Bxf6 9. Nd5 Bg7 10. Bb5+ Bd7 11. Bxd7+ Qxd7 12. 0-0 Nc6 13. c3 0-0 14. Rad1 Rac8 15. Nc2 Ne5 16. Nce3 Nc4 17. Nxc4 Rxc4 18. Rfe1 e6 19. Ne3 Rc6 20. f4 Kh7 21. Kh1 Qc7 22. Rf1 f5 23. exf5 gxf5 24. Qe2 Ra6 25. a3 Rb6 26. Rd2 Rf6 27. Rfd1 Rc6 28. Nc2 d5 29. Qf3 Rg6 30. Nd4 Rb6 31. Re1 Qc4 32. Ne2 Qe4 33. Qf2 Qa4 34. Nc1 Rg4 35. Nd3 Qc4 36. Qf3 Qc7 37. Ne5 Bxe5 38. Rxe5 Qc4 39. g3 Rg6 40. Kg2 Kg7 41. Qe3 Kf7 42. Re2 Rf6 43. h3 Qa2 44. Qd2 Qc4 45. Kf3 Rb3 46. Kg2 Rb6 47. Kh2 Rb3 48. Rf2 Rb6 49. g4 fxg4 50. hxg4 Kg7 51. Kg3 Rg6 52. Qe3 Qc7 53. Qd4 Kh7 54. Kh3 Qg7 55. Rg2 Qf7 56. Rh5 Rc6 57. f5 exf5 58. Rxf5 Rcf6 59. Rgf2 Rxf5 60. Rxf5 Qe6 61. Qxd5 Qe3+ 62. Rf3 Rd6 63. Qf7+ 1-0

[Event "Copenhagen KS"]
[Site "Copenhagen"]
[Date "1940.??.??"]
[Round "5"]
[White "Cruusberg, Axel"]
[Black "Klausen, Viggo"]
[Result "1/2-1/2"]
[ECO "B73"]
[PlyCount "112"]
[EventDate "1940.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 0-0 8. 0-0 Nc6 9. Qd2 Ng4 10. Nxc6 bxc6 11. Bxg4 Bxg4 12. Bh6 Qb6 13. Rab1 Be6 14. Rfd1 Bxh6 15. Qxh6 f5 16. Rd2 Rf7 17. b3 Raf8 18. Rf1 Bc8 19. Na4 Qc7 20. c4 fxe4 21. Nc3 Bf5 22. Qe3 Qa5 23. h3 Rd8 24. g4 Bxg4 25. hxg4 Rf3 26. Qxe4 Qxc3 27. Qxe7 Qxd2 28. Qxd8+ Rf8 29. Qd7 Qf4 30. Qxc6 Qxg4+ 31. Qg2 Qf4 32. Qg3 Qd4 33. Kg2 Rf4 34. f3 Qf6 35. Rf2 h5 36. Qh3 h4 37. Kh1 Rf5 38. Qf1 Kg7 39. f4 Qd4 40. Kh2 Qe3 41. Rf3 Qe4 42. Rf2 Qd4 43. Rf3 Kh6 44. Rf2 Rf7 45. Rf3 Qe4 46. Rf2 Re7 47. Qg2 Qf5 48. Qh3 Qh5 49. Qf3 Qxf3 50. Rxf3 Re2+ 51. Kh3 Rxa2 52. Rd3 Rf2 53. Rd4 Rf3+ 54. Kxh4 Rxb3 55. Rxd6 Rc3 56. Rc6 Kg7 1/2-1/2

[Event "Copenhagen KS"]
[Site "Copenhagen"]
[Date "1940.??.??"]
[Round "1"]
[White "Giersing, Johannes Hjalmar"]
[Black "Klausen, Viggo"]
[Result "0-1"]
[ECO "B70"]
[PlyCount "94"]
[EventDate "1940.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Qd2 Nc6 8. Nxc6 bxc6 9. Bd3 h6 10. Bf4 e5 11. Be3 Ng4 12. 0-0 Be6 13. Rad1 Qc7 14. Rfe1 0-0 15. h3 Nxe3 16. Qxe3 Rab8 17. b3 Rbe8 18. Qe2 Qe7 19. Bc4 Bc8 20. Rd3 Rd8 21. Red1 Rfe8 22. Qd2 Bf8 23. Kh1 Kh7 24. f4 f5 25. fxe5 Qxe5 26. Rf3 fxe4 27. Rf7+ Bg7 28. Rxa7 d5 29. Bf1 Rf8 30. Qe3 Kh8 31. Ne2 d4 32. Qd2 Qc5 33. Rc7 g5 34. Qe1 Be5 35. b4 Qd6 36. Ra7 e3 37. Ng1 Rf2 38. c3 Qf6 39. cxd4 Rxd4 40. Rxd4 Bxd4 41. Ra8 Rxf1 42. Rxc8+ Kg7 43. Rc7+ Kf8 44. Rc8+ Ke7 45. Qg3 Rxg1+ 46. Kxg1 e2+ 47. Kh1 Qf1+ 0-1

[Event "Copenhagen KS"]
[Site "Copenhagen"]
[Date "1940.??.??"]
[Round "2"]
[White "Klausen, Viggo"]
[Black "Gemzoe, Jacob Erhard W"]
[Result "1/2-1/2"]
[ECO "D02"]
[PlyCount "89"]
[EventDate "1940.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 c6 5. 0-0 Nd7 6. c4 dxc4 7. Qc2 Nb6 8. Rd1 Nf6 9. Ne5 0-0 10. Na3 Be6 11. e4 Qc8 12. Be3 Ng4 13. Nxg4 Bxg4 14. Rd2 Bh3 15. Nxc4 Bxg2 16. Kxg2 Nxc4 17. Qxc4 Rd8 18. Rc1 Qg4 19. f3 Qd7 20. Rc3 e6 21. Rb3 Qe7 22. Ra3 a6 23. b4 Rd7 24. Rad3 Rad8 25. a3 h6 26. a4 Rc7 27. Rc2 Rcd7 28. Rcd2 Rc7 29. f4 Rcc8 30. Rc2 Qd7 31. Qc5 Qe8 32. Rdc3 Ra8 33. Qb6 Qd7 34. Rc4 Rac8 35. Kf3 f5 36. exf5 exf5 37. Kf2 Re8 38. b5 axb5 39. axb5 Qd5 40. bxc6 bxc6 41. Rxc6 Rb8 42. Qc7 Qh1 43. Rxg6 Qxh2+ 44. Kf1 Qh1+ 45. Kf2 1/2-1/2

[Event "Copenhagen KS"]
[Site "Copenhagen"]
[Date "1940.??.??"]
[Round "4"]
[White "Klausen, Viggo"]
[Black "Nielsen, Julius"]
[Result "1-0"]
[ECO "D34"]
[PlyCount "145"]
[EventDate "1940.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. 0-0 e6 6. c4 Be7 7. cxd5 exd5 8. Nc3 0-0 9. dxc5 d4 10. Na4 Bf5 11. b4 d3 12. e3 Nxb4 13. Nd4 Be4 14. Bxe4 Nxe4 15. Rb1 Qa5 16. Bd2 Nxd2 17. Qxd2 Qxa4 18. Rxb4 Qa5 19. Nb3 Qa6 20. Re4 Rfe8 21. Rc1 Bf6 22. Rec4 Rad8 23. a4 Qc6 24. Qb4 Re7 25. Nd2 g6 26. Rb1 Bg5 27. Re4 Red7 28. a5 Be7 29. Rc4 Rc8 30. Rbc1 Rcd8 31. Re4 Kg7 32. Rcc4 Bf6 33. Rf4 Be5 34. Rfe4 Rd5 35. Rc1 Bf6 36. Rec4 Rc8 37. Ne4 Be7 38. Qc3+ Kg8 39. Rd4 Rxd4 40. exd4 Qxe4 41. Re1 d2 42. Qxd2 Bg5 43. f4 Bxf4 44. gxf4 Qd5 45. Re5 Qf3 46. d5 f6 47. Re3 Qg4+ 48. Rg3 Qf5 49. Rc3 Re8 50. a6 Qb1+ 51. Rc1 Qb5 52. axb7 Qxb7 53. c6 Qb6+ 54. Qf2 Qc7 55. Qd4 Qd6 56. c7 Rc8 57. Rc6 Qd7 58. Qc4 Kg7 59. Kf2 Qh3 60. Re6 Qxh2+ 61. Ke3 Qg1+ 62. Kd2 Qf2+ 63. Kc1 h5 64. d6 Qb6 65. Kd2 Qb2+ 66. Ke1 Qb1+ 67. Kf2 Qb2+ 68. Qe2 Qd4+ 69. Qe3 Qd5 70. Re7+ Kh6 71. f5+ g5 72. Rh7+ Kxh7 73. Qe7+ 1-0

[Event "Copenhagen KS"]
[Site "Copenhagen"]
[Date "1940.??.??"]
[Round "6"]
[White "Klausen, Viggo"]
[Black "Norman Hansen, Holger"]
[Result "1-0"]
[ECO "E16"]
[PlyCount "61"]
[EventDate "1940.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. g3 Bb7 5. Bg2 d5 6. cxd5 Bb4+ 7. Bd2 Bxd2+ 8. Qxd2 exd5 9. Nc3 0-0 10. 0-0 Nbd7 11. Rac1 c6 12. Rfd1 Re8 13. Qc2 Qe7 14. a3 g6 15. Bh3 Kg7 16. Qa4 a5 17. Rd3 Qd6 18. Rd2 Ne4 19. Rdc2 Nxc3 20. bxc3 b5 21. Qb3 Nb6 22. Ne5 Bc8 23. Bg2 Bf5 24. e4 Be6 25. exd5 Bxd5 26. Bxd5 Nxd5 27. c4 Ne7 28. cxb5 Qd5 29. Qxd5 cxd5 30. Rc7 a4 31. b6 1-0

[Event "DEN-ch28"]
[Site "Odense"]
[Date "1937.03.26"]
[Round "3"]
[White "Klausen, Viggo"]
[Black "Enevoldsen, Jens"]
[Result "1-0"]
[ECO "A34"]
[PlyCount "119"]
[EventDate "1937.??.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 c5 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 7. 0-0 e5 8. d3 Be7 9. Be3 h5 10. Na4 Ne6 11. Rc1 h4 12. Nxc5 hxg3 13. hxg3 Nxc5 14. Bxc5 Bxc5 15. Rxc5 Qd6 16. Qc1 Bd7 17. Qe3 Kf8 18. Rfc1 Re8 19. Rb5 b6 20. Kf1 Re6 21. Rb3 Reh6 22. Rbc3 f6 23. Rc4 Ne7 24. Kg1 Bh3 25. Bxh3 Rxh3 26. Rh4 R3xh4 27. Nxh4 g5 28. Nf3 Qe6 29. Qe4 Qh3 30. Ne1 Qh2+ 31. Kf1 Qh3+ 32. Qg2 Qd7 33. Kg1 Kg7 34. a3 a5 35. Qe4 Nd5 36. Qg2 Ne7 37. Qf3 Kf7 38. e3 Qb5 39. Rc2 f5 40. Rc7 Kf6 41. Qb7 Rh7 42. Rc2 g4 43. Qc7 Qd5 44. Qxb6+ Kg5 45. Kf1 Rh6 46. Qc5 Qh1+ 47. Ke2 Nc6 48. b4 axb4 49. axb4 Re6 50. Qc4 Kf6 51. Kd2 Qf1 52. Kd1 Rd6 53. Rd2 Ne7 54. b5 Nd5 55. Qc5 Ke6 56. Ra2 e4 57. Qc8+ Ke5 58. d4+ Kf6 59. Ra7 Qxb5 60. Qh8+ 1-0

[Event "DEN-ch28"]
[Site "Odense"]
[Date "1937.??.??"]
[Round "6"]
[White "Andersen, Erik Sr"]
[Black "Klausen, Viggo"]
[Result "1-0"]
[ECO "A84"]
[PlyCount "57"]
[EventDate "1937.??.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 f5 3. g3 b6 4. Bg2 Bb7 5. 0-0 Be7 6. c4 Nf6 7. Nc3 Bb4 8. Qc2 Bxc3 9. Qxc3 Qe7 10. Bf4 d6 11. Rad1 Nbd7 12. b4 0-0 13. Bc1 Rae8 14. Rfe1 Ne4 15. Qb3 Kh8 16. d5 e5 17. Rf1 a6 18. Nh4 Ng5 19. f4 exf4 20. Rxf4 Qxe2 21. Rf2 Qg4 22. Rdf1 Ne5 23. Rf4 Nh3+ 24. Bxh3 Qxh3 25. Nxf5 Ng4 26. Qb2 Rf7 27. Nxg7 Rxf4 28. Nxe8+ Ne5 29. Bxf4 1-0

[Event "DEN-ch26"]
[Site "Copenhagen"]
[Date "1935.04.20"]
[Round "4"]
[White "Klausen, Viggo"]
[Black "Andersen, Erik Sr"]
[Result "0-1"]
[ECO "E11"]
[PlyCount "144"]
[EventDate "1935.04.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. a3 Bxd2+ 6. Nbxd2 d6 7. e3 Nbd7 8. Bd3 0-0 9. 0-0 e5 10. Qc2 Re8 11. Bf5 g6 12. dxe5 dxe5 13. Bxd7 Bxd7 14. h3 Rad8 15. Rad1 Bc6 16. Rfe1 Rd7 17. Qc3 b6 18. b4 Bb7 19. Nf1 Ne4 20. Qc2 c5 21. Rxd7 Qxd7 22. Rd1 Qc6 23. Rd5 Nf6 24. b5 Qc7 25. Rd1 Qe7 26. Qd2 e4 27. Ne1 Bc8 28. Ng3 Be6 29. Qc2 Bc8 30. a4 h5 31. Ne2 Rd8 32. Nf4 Rxd1 33. Qxd1 Be6 34. Qc2 Qd6 35. h4 Qe5 36. Nxe6 Qxe6 37. g3 Qh3 38. Ng2 Ng4 39. Qxe4 Qh1+ 40. Kxh1 Nxf2+ 41. Kh2 Nxe4 42. Nf4 Nd6 43. Nd5 Nxc4 44. Ne7+ Kf8 45. Nc8 Ke8 46. Nxa7 Nb2 47. a5 bxa5 48. Nc6 Nc4 49. b6 Nxb6 50. Nxa5 Kd7 51. Kg2 Kd6 52. Kf3 Kd5 53. e4+ Ke6 54. g4 hxg4+ 55. Kxg4 c4 56. Kf4 c3 57. Nc6 Kd6 58. Nd4 Kc5 59. Ke3 Kc4 60. Nc2 Kb3 61. Kd3 Nd7 62. Ne1 Nf8 63. Kd4 c2 64. Nd3 Ne6+ 65. Ke5 Kc3 66. Nc1 Kd2 67. Na2 Ke3 68. Kf6 Kxe4 69. Kxf7 Kf5 70. Nc1 Nf4 71. Nb3 Ne2 72. Kg7 c1Q 0-1

[Event "DEN-ch26"]
[Site "Copenhagen"]
[Date "1935.04.19"]
[Round "3"]
[White "Christensen, Alfred August"]
[Black "Klausen, Viggo"]
[Result "1-0"]
[ECO "A03"]
[PlyCount "63"]
[EventDate "1935.04.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. f4 Nf6 2. b3 c5 3. Bb2 Nc6 4. e3 d5 5. Nf3 a6 6. Be2 d4 7. 0-0 g6 8. Ne5 Bg7 9. Nxc6 bxc6 10. Bf3 Nd5 11. c4 dxc3 12. Bxc3 0-0 13. Bxg7 Kxg7 14. Qc2 Qd6 15. Na3 Nb4 16. Qc3+ Kg8 17. Nc4 Qc7 18. Ne5 f6 19. Ng4 Bxg4 20. Bxg4 Qd6 21. Rfd1 e5 22. fxe5 fxe5 23. a3 Nd3 24. Rf1 Rxf1+ 25. Rxf1 Rf8 26. Qc4+ Kg7 27. Rxf8 Kxf8 28. Be2 e4 29. Qxe4 Nc1 30. Qc4 Qxd2 31. Qxc5+ Kg7 32. Qe7+ 1-0

[Event "DEN-ch26"]
[Site "Copenhagen"]
[Date "1935.04.18"]
[Round "2"]
[White "Klausen, Viggo"]
[Black "Cruusberg, Axel"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "79"]
[EventDate "1935.04.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "DEN"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. cxd5 exd5 7. e3 Be7 8. Qc2 Nh5 9. Bxe7 Qxe7 10. Bd3 Nhf6 11. 0-0 0-0 12. Rab1 Re8 13. b4 Ne4 14. Bxe4 dxe4 15. Nd2 Nf6 16. Na4 b6 17. Rfc1 Ba6 18. Rb3 Qd6 19. h3 Re6 20. Nb2 Rae8 21. Nbc4 Qb8 22. Ne5 Bb7 23. a3 Qa8 24. Rc3 Rc8 25. Rc4 h6 26. Nf1 Kf8 27. Ng3 Ba6 28. Rc3 Bb7 29. Qb3 Qb8 30. Nf5 Qa8 31. Nd6 Rc7 32. Nexf7 Nd5 33. Nxb7 Rxb7 34. Rxc6 Rxc6 35. Rxc6 Rd7 36. Ne5 Rd8 37. Qc4 Qb7 38. Qc2 Re8 39. b5 Nf6 40. Qc4 1-0

[Event "Copenhagen-ch"]
[Site "Copenhagen"]
[Date "1934.04.16"]
[Round "7"]
[White "Klausen, Viggo"]
[Black "Nielsen, Julius"]
[Result "0-1"]
[ECO "D64"]
[PlyCount "90"]
[EventDate "1934.03.23"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. Bg5 Be7 5. Nc3 0-0 6. e3 Nbd7 7. Rc1 c6 8. Qc2 Ne4 9. Bxe7 Qxe7 10. cxd5 exd5 11. Nxe4 dxe4 12. Nd2 f5 13. Bc4+ Kh8 14. 0-0 Rf6 15. Rfd1 Rh6 16. Nf1 Nb6 17. d5 c5 18. Bb3 Nd7 19. Ng3 Rf6 20. d6 Qe8 21. Rd5 g6 22. Qc3 Kg7 23. Ba4 b6 24. Bxd7 Qxd7 25. Rxf5 gxf5 26. Nh5+ Kg6 27. Nxf6 Qxd6 28. Ne8 Qe7 29. Rd1 Qxe8 30. Rd6+ Be6 31. Qe5 Kf7 32. g4 Rd8 33. gxf5 Rxd6 34. Qxd6 Bxf5 35. Qf4 Qd7 36. Kg2 Kg8 37. Qb8+ Qc8 38. Qg3+ Bg6 39. h4 Qf5 40. Qb8+ Qf8 41. Qxa7 Qf3+ 42. Kf1 Qh1+ 43. Ke2 Bh5+ 44. Kd2 Qd1+ 45. Kc3 Qd3# 0-1

[Event "Copenhagen-ch"]
[Site "Copenhagen"]
[Date "1934.04.11"]
[Round "6"]
[White "Ruben, Carl"]
[Black "Klausen, Viggo"]
[Result "1-0"]
[ECO "D52"]
[PlyCount "71"]
[EventDate "1934.03.23"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 c6 5. Bg5 Nbd7 6. e3 Qa5 7. Bxf6 Nxf6 8. Nd2 Bb4 9. Qc2 0-0 10. Bd3 Re8 11. 0-0 e5 12. cxd5 exd4 13. Nb3 Qd8 14. Nxd4 Bxc3 15. bxc3 Qxd5 16. Rfd1 Qh5 17. Bf5 c5 18. Bxc8 Rexc8 19. Nf5 Rd8 20. f3 g6 21. Ng3 Qe5 22. e4 Nd7 23. Rd5 Qc7 24. Qf2 b6 25. Rad1 Nf6 26. R5d2 Rxd2 27. Qxd2 Re8 28. Nf5 Qe5 29. Nd6 Rd8 30. f4 Qh5 31. e5 Ne4 32. Qd3 Nxc3 33. Re1 Nxa2 34. Qc4 Rxd6 35. exd6 Nb4 36. d7 1-0

[Event "Copenhagen-ch"]
[Site "Copenhagen"]
[Date "1934.03.27"]
[Round "2"]
[White "Andersen, Erik"]
[Black "Klausen, Viggo"]
[Result "1-0"]
[ECO "A47"]
[PlyCount "63"]
[EventDate "1934.03.23"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "DEN"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 d6 6. e4 Be7 7. 0-0 0-0 8. Qe2 Nbd7 9. e5 Nh5 10. Ne4 g6 11. Bh6 Ng7 12. Rad1 f6 13. exf6 Nxf6 14. Bxg7 Kxg7 15. Neg5 Bc8 16. Nxe6+ Bxe6 17. Qxe6 Nh5 18. Rfe1 Bf6 19. g3 Qc8 20. c3 Qxe6 21. Rxe6 Rae8 22. Rde1 Rxe6 23. Rxe6 Bd8 24. Kg2 Nf6 25. a4 a5 26. Bb5 Nh5 27. Bc6 Kf7 28. Re2 Kg7 29. b4 Rf7 30. bxa5 bxa5 31. Nd2 Nf6 32. Nb3 1-0

