[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Brinckmann, Alfred"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "A03"]
[PlyCount "74"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. h3 Bxf3 5. Qxf3 e6 6. b3 Ne4 7. g3 Be7 8. h4 Bf6 9. c3 c6 10. Bd3 Nd7 11. Ba3 Nec5 12. Bc2 b6 13. d4 Nb7 14. Nd2 c5 15. 0-0 Rc8 16. Rac1 0-0 17. Kg2 Be7 18. g4 cxd4 19. Bxe7 Qxe7 20. exd4 Nd6 21. h5 f5 22. g5 Ne4 23. Nxe4 dxe4 24. Qg3 b5 25. Bd1 Qa3 26. Rc2 Nb6 27. Be2 a6 28. Rfc1 Nd5 29. h6 Rc7 30. hxg7 Rfc8 31. c4 Nb4 32. c5 Nxc2 33. Rxc2 Qb4 34. Qe3 Rd8 35. Rd2 Rxc5 36. a4 Rc3 37. Qg1 Qxb3 0-1

[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Kostic, Boris"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "B17"]
[PlyCount "103"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bc4 e6 8. 0-0 Be7 9. Qe2 0-0 10. Bf4 Nd5 11. Bg3 Bd6 12. Ne5 f5 13. f4 Qb6 14. c3 Bxe5 15. fxe5 Qd8 16. Rae1 Bd7 17. Bb3 b5 18. Qh5 Be8 19. Qh4 Qxh4 20. Bxh4 Rf7 21. Bg5 a5 22. a3 Rd7 23. Bd2 Rc7 24. h3 Bh5 25. Rf2 a4 26. Ba2 h6 27. Rc1 Rb8 28. Be1 Rcb7 29. Bd2 Kh7 30. Re1 Kh8 31. Bc1 Rd8 32. Rc2 Bg6 33. c4 Nc7 34. cxb5 Nxb5 35. Rxc6 Nxd4 36. Rd6 Rbd7 37. Bxe6 Rxd6 38. exd6 Rxd6 39. Bc4 Rc6 40. Bd3 Rd6 41. Bc4 Rd7 42. Kf2 Bf7 43. Bxf7 Rxf7 44. Bd2 Kh7 45. Re5 Rb7 46. Bc3 Nb5 47. Bb4 Nd4 48. Rd5 Nc6 49. Bc3 g6 50. Rd6 Rc7 51. Rf6 Ne7 52. Be5 1-0

[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Mueller, Hans"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "A26"]
[PlyCount "82"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nc6 7. d3 e5 8. Ne1 Ne7 9. e4 c6 10. Nc2 Be6 11. b3 Qd7 12. Rb1 Rfd8 13. Qe2 Bh3 14. Rd1 Bxg2 15. Kxg2 c5 16. Bg5 h6 17. Bxf6 Bxf6 18. b4 cxb4 19. Rxb4 Nc6 20. Nd5 Bg7 21. Rb2 Kh7 22. Rdb1 Rab8 23. Ndb4 Qc7 24. Nd5 Qd7 25. Qd2 f5 26. Qe2 Rf8 27. f3 b6 28. Ndb4 Nxb4 29. Nxb4 Rf7 30. Rf1 Rbf8 31. Rbb1 Bf6 32. Nd5 Bd8 33. h3 Qa4 34. Nc3 Qc6 35. a4 Qd7 36. Ra1 Qc6 37. Nd5 Qc5 38. Qe3 Qc6 39. Qe2 Qc5 40. Ra2 Qc6 41. Raa1 Qc5 1/2-1/2

[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Seitz, Jakob Adolf"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "E62"]
[PlyCount "69"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. d4 d6 6. Nf3 Nc6 7. 0-0 Re8 8. h3 Bd7 9. b3 e5 10. d5 Nd4 11. Ng5 h6 12. Nf3 Nxf3+ 13. exf3 Nh5 14. Qc2 Kh7 15. Kh2 b6 16. Bd2 f5 17. Rae1 a5 18. a4 Re7 19. Rh1 Qf8 20. h4 Rae8 21. Bf1 e4 22. f4 Nf6 23. Bh3 Qh8 24. Kg1 Kg8 25. Nd1 Kf7 26. Ne3 Nh5 27. Bf1 Nf6 28. Be2 Bc8 29. Bc3 h5 30. Qb2 Nd7 31. Bxg7 Qxg7 32. Qxg7+ Kxg7 33. Bd1 Nc5 34. Bc2 Bd7 35. Rd1 1/2-1/2

[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Szabados, Eugenio"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "59"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nc3 Nbd7 7. e4 e5 8. dxe5 dxe5 9. b3 Re8 10. a4 h6 11. Ba3 Nh7 12. Qd2 c6 13. Rad1 Qf6 14. Qe3 Ng5 15. Nxg5 Qxg5 16. Qxg5 hxg5 17. Nb1 Nf8 18. Nd2 Be6 19. Rfe1 g4 20. Nf1 Nh7 21. Bc1 Bf8 22. f3 gxf3 23. Bxf3 Be7 24. Kg2 Ng5 25. Bxg5 Bxg5 26. Ne3 Rad8 27. Rxd8 Rxd8 28. Rd1 Rd4 29. Rxd4 exd4 30. Nd1 1/2-1/2

[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Grob, Henry"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "83"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 d5 3. c4 e6 4. Nc3 Nbd7 5. cxd5 exd5 6. Bg5 h6 7. Bh4 c6 8. e3 Bd6 9. Bd3 Qe7 10. Qc2 0-0 11. 0-0 Re8 12. e4 dxe4 13. Nxe4 g5 14. Nxd6 Qxd6 15. Bg3 Qf8 16. Rae1 Nb6 17. h4 Rxe1 18. Rxe1 g4 19. Nd2 Nbd5 20. a3 Nh5 21. Be5 f6 22. Bg6 fxe5 23. Bxh5 Bf5 24. Qb3 Qg7 25. Rxe5 Rf8 26. Nf1 Kh8 27. Ne3 Nxe3 28. Qxe3 Qf6 29. Re7 Bc8 30. Qe5 Qxe5 31. dxe5 a5 32. e6 Rg8 33. Bf7 Rd8 34. Rc7 g3 35. fxg3 Bxe6 36. Bxe6 Rd6 37. Bg4 b5 38. Rd7 Rg6 39. Bf3 Rxg3 40. Rd6 c5 41. Rxh6+ Kg8 42. Rh5 1-0

[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Henneberger, Walter"]
[Result "1-0"]
[ECO "E10"]
[PlyCount "81"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 Nc6 4. Bg2 Be7 5. 0-0 0-0 6. d4 d6 7. Nc3 e5 8. e3 Bg4 9. Qd2 Qc8 10. Re1 Qf5 11. Nh4 Qc8 12. f4 Rd8 13. Qf2 Bh3 14. Nf3 Bxg2 15. Qxg2 Re8 16. b3 Bf8 17. Ba3 e4 18. Nd2 Qf5 19. d5 Nb8 20. h3 h5 21. Nb5 Na6 22. Bb2 c6 23. Bxf6 cxb5 24. Bd4 bxc4 25. bxc4 Nb4 26. Rab1 Nd3 27. Rf1 b6 28. g4 hxg4 29. hxg4 Qc8 30. Qh3 Qa6 31. Kg2 Qxa2 32. Rbd1 f6 33. g5 Kf7 34. Qf5 Re7 35. Rh1 Ke8 36. gxf6 gxf6 37. Bxf6 Qc2 38. Bxe7 Ne1+ 39. Rhxe1 Bxe7 40. Qxe4 Qa4 41. Rh1 1-0

[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Johner, Hans"]
[Result "1/2-1/2"]
[ECO "D05"]
[PlyCount "36"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. e3 Nf6 4. Nbd2 c5 5. c3 Nc6 6. Bd3 Be7 7. 0-0 0-0 8. Ne5 Nxe5 9. dxe5 Ne8 10. f4 f5 11. g4 g6 12. h3 Ng7 13. Kh1 Bd7 14. Nf3 Bc6 15. Qe2 Kh8 16. Bd2 Qd7 17. Rg1 a6 18. Rg3 b5 1/2-1/2

[Event "Zuerich Seniors"]
[Site "Zuerich"]
[Date "1962.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Staehelin, Adolf"]
[Result "1/2-1/2"]
[ECO "A13"]
[PlyCount "38"]
[EventDate "1962.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. 0-0 a6 6. Qc2 Nbd7 7. Qxc4 b5 8. Qc2 Bb7 9. b3 c5 10. Bb2 Be7 11. Nc3 0-0 12. Rfc1 Qb6 13. d3 Rac8 14. Nd1 Rfd8 15. Qd2 Ne8 16. Bc3 Qd6 17. Rc2 Bf6 18. Rac1 Bxc3 19. Nxc3 h6 1/2-1/2

[Event "EU-chT 02nd Group1"]
[Site "Geneve"]
[Date "1960.04.16"]
[Round "2.10"]
[White "Beltran Tassis, Alejandro"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E96"]
[PlyCount "145"]
[EventDate "1960.04.15"]
[EventType "team-tourn"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "Spain"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Nf3 Nbd7 7. 0-0 e5 8. Re1 Re8 9. Bf1 c6 10. Rb1 exd4 11. Nxd4 Nc5 12. f3 a5 13. Kh1 Qc7 14. Be3 h6 15. Nb3 b6 16. Qd2 Kh7 17. Rbd1 Bf8 18. Bf4 Nb7 19. Na4 Nd7 20. Bg3 Ndc5 21. Nbxc5 bxc5 22. h3 Be6 23. b3 Rad8 24. Bd3 Bg7 25. Bh4 f6 26. Qc2 Bf7 27. Nc3 Rd7 28. Bg3 Nd8 29. Bf1 Ne6 30. Ne2 Qd8 31. Rd2 d5 32. cxd5 cxd5 33. Red1 d4 34. Nc1 Qb6 35. Bc4 Nd8 36. Nd3 Bxc4 37. Qxc4 Ne6 38. Rc2 Bf8 39. Nb2 Kg7 40. Na4 Qc6 41. Be1 Ra8 42. Nb2 Be7 43. Nd3 Qa6 44. Qa4 Rb7 45. Rc4 Rb5 46. Qa3 Bd6 47. Qc1 Rb7 48. Bf2 Qb5 49. Qc2 Rba7 50. Be1 a4 51. b4 cxb4 52. Bxb4 Rc7 53. Rxc7+ Bxc7 54. a3 Ra6 55. Rc1 Kf7 56. Kg1 Ke8 57. Qd2 g5 58. Qc2 Kd7 59. Nb2 Rc6 60. Qxc6+ Qxc6 61. Rxc6 Kxc6 62. Nxa4 Bf4 63. Nb2 Bc1 64. Nd3 Be3+ 65. Kf1 Kb5 66. g3 Kc4 67. Ke2 Ng7 68. a4 f5 69. Be1 f4 70. g4 Ne6 71. a5 Kb5 72. Kd1 Nc5 73. Kc2 1-0

[Event "EU-chT 02nd Group1"]
[Site "Geneve"]
[Date "1960.04.15"]
[Round "1.10"]
[White "Zimmermann, Otto"]
[Black "Garcia Orus, Francisco"]
[Result "0-1"]
[ECO "E67"]
[PlyCount "118"]
[EventDate "1960.04.15"]
[EventType "team-tourn"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Spain"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "ESP"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. d4 Nbd7 7. Nc3 e5 8. Qc2 c6 9. Rd1 Qe7 10. b3 Re8 11. Ba3 e4 12. Ng5 e3 13. f3 Nf8 14. Nge4 Bf5 15. Qc1 Bxe4 16. fxe4 Qc7 17. Qxe3 Ne6 18. Bf3 Nd7 19. Rac1 Rad8 20. Bb2 f5 21. Qf2 Ng5 22. Qg2 fxe4 23. Nxe4 Nxe4 24. Bxe4 Nf8 25. Bf3 Qb6 26. Kh1 Ne6 27. e3 Ng5 28. Re1 Re7 29. c5 Qc7 30. cxd6 Qxd6 31. Rcd1 Rf8 32. Be2 Kh8 33. Bc4 Rfe8 34. Bc1 Ne4 35. Rf1 b5 36. Bd3 Nc3 37. Rde1 Bxd4 38. e4 Be5 39. Rf3 Kg7 40. Ref1 a5 41. Qd2 Rd7 42. Qh6+ Kg8 43. Bb2 Bg7 44. Qe3 Nxa2 45. Bxg7 Kxg7 46. Qf2 Nb4 47. Rf7+ Kg8 48. Be2 Qe6 49. Rf4 Rdd8 50. Kg1 Qxb3 51. Rf6 Qc3 52. Qf4 Qd4+ 53. Rf2 Qc5 54. Bg4 Nd3 55. Rxg6+ hxg6 56. Qf7+ Kh8 57. Qf6+ Kh7 58. Qh4+ Kg8 59. Be6+ Kg7 0-1

[Event "SUI-Saarland"]
[Site "Zuerich"]
[Date "1955.09.10"]
[Round "1.8"]
[White "Zimmermann, Otto"]
[Black "Kaiser, Arthur"]
[Result "1-0"]
[ECO "A52"]
[PlyCount "81"]
[EventDate "1955.09.??"]
[EventType "team"]
[EventRounds "1"]
[EventCountry "SUI"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Saarland"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Bb4+ 5. Nc3 Bxc3+ 6. bxc3 Nc6 7. Nf3 Qe7 8. Qd5 Qa3 9. Rc1 Qxa2 10. h3 Nh6 11. e4 Ng8 12. c5 Qxd5 13. exd5 Nce7 14. Bc4 Ng6 15. Bg3 N8e7 16. Nd4 a6 17. 0-0 0-0 18. e6 dxe6 19. dxe6 fxe6 20. Bxe6+ Kh8 21. Bxc7 Nc6 22. Rfe1 Bxe6 23. Nxe6 Rf7 24. Bd6 Kg8 25. f4 h6 26. Kh2 Re8 27. g4 Nge7 28. Nd4 Rc8 29. Kg3 Nd5 30. f5 Rd7 31. Nxc6 Rxc6 32. Re8+ Kh7 33. h4 b6 34. g5 g6 35. Be5 Rg7 36. Bxg7 Kxg7 37. cxb6 Rxb6 38. Rd1 Rb5 39. c4 Rb3+ 40. Kh2 Nb6 41. c5 1-0

[Event "SUI Cup"]
[Site "Switzerland"]
[Date "1955.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Leepin, Peter"]
[Result "0-1"]
[ECO "A53"]
[PlyCount "96"]
[EventDate "1955.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Nf3 Bd6 7. Bg5 Be6 8. 0-0-0 Bxc4 9. Nxe5 Be6 10. e4 Kc8 11. Nc4 Bb4 12. f3 Nbd7 13. Kb1 a6 14. Be2 b5 15. Ne3 Bxc3 16. bxc3 Nb6 17. Rd2 Na4 18. Rc1 Nd7 19. f4 f6 20. Bh4 Rb8 21. Rd4 Rb6 22. Nd5 Rd6 23. c4 b4 24. Ne7+ Kd8 25. Rxd6 cxd6 26. Nc6+ Kc7 27. Nd4 Ndc5 28. Nxe6+ Nxe6 29. f5 Nec5 30. Bf3 Nc3+ 31. Kc2 Nxa2 32. Ra1 Rb8 33. Bf2 b3+ 34. Kd2 b2 35. Rb1 Rb3 36. Bxc5 dxc5 37. Kc2 Rb4 38. Rxb2 Rxb2+ 39. Kxb2 Nb4 40. Kc3 Kd6 41. Kd2 Ke5 42. Ke3 Nc2+ 43. Kd2 Nd4 44. Ke3 Nc6 45. Bd1 Ne7 46. Ba4 Nc8 47. Bc6 Nd6 48. Bd5 a5 0-1

[Event "Olympiad-11 Final B"]
[Site "Amsterdam"]
[Date "1954.09.23"]
[Round "11"]
[White "Zimmermann, Otto"]
[Black "Schneider, Lucien"]
[Result "1/2-1/2"]
[ECO "A13"]
[PlyCount "24"]
[EventDate "1954.09.12"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Luxembourg"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "LUX"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 c5 5. 0-0 Bd6 6. cxd5 exd5 7. d4 Nc6 8. Nc3 Be6 9. Nb5 0-0 10. Bg5 Be7 11. dxc5 Bxc5 12. Rc1 Qb6 1/2-1/2

[Event "Olympiad-11 Final B"]
[Site "Amsterdam"]
[Date "1954.09.21"]
[Round "9"]
[White "Ramm, Wilhelm"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "A30"]
[PlyCount "80"]
[EventDate "1954.09.12"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Norway"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "NOR"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Qc8 6. 0-0 c5 7. b3 Be7 8. Bb2 0-0 9. Nc3 cxd4 10. Qxd4 Nc6 11. Qd2 Rd8 12. e4 d6 13. Rad1 Ne8 14. Rfe1 Rb8 15. Bh3 Bf8 16. Nd5 Ba8 17. Qf4 Qb7 18. Nc3 a6 19. Qe3 b5 20. cxb5 axb5 21. Ne2 Nb4 22. Qd2 d5 23. e5 Nxa2 24. Qd3 Nb4 25. Qb1 Nc6 26. Ng5 g6 27. Nf4 Ng7 28. Nxd5 Rxd5 29. Rxd5 Nb4 30. Ne4 Nxd5 31. Qc1 Kh8 32. Bg2 Rc8 33. Qg5 Nb4 34. Bf3 Nd3 35. Re2 Nxb2 36. Qf4 Nd3 37. Qf6 Qe7 38. Nd6 Rc1+ 39. Kg2 Bxf3+ 40. Qxf3 Nxe5 0-1

[Event "Olympiad-11 Final B"]
[Site "Amsterdam"]
[Date "1954.09.20"]
[Round "8"]
[White "Panagopoulos, Takis"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "E43"]
[PlyCount "57"]
[EventDate "1954.09.12"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Greece"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "GRE"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Nc3 Bb4 6. Bd3 Ne4 7. Qb3 c5 8. 0-0 Bxc3 9. bxc3 0-0 10. a4 d6 11. a5 Nd7 12. Nd2 Nxd2 13. Bxd2 Qc7 14. e4 bxa5 15. Qb5 a4 16. Qxa4 a5 17. Rfb1 Ra7 18. Qd1 e5 19. Be3 Re8 20. Qc2 Rb8 21. f4 f6 22. f5 Bc6 23. d5 Bb7 24. Rb5 Rba8 25. Qa2 a4 26. Bc2 Ba6 27. Rbb1 Nb6 28. Bd3 Bc8 29. Bc1 1/2-1/2

[Event "Olympiad-11 Final B"]
[Site "Amsterdam"]
[Date "1954.09.18"]
[Round "6"]
[White "Zimmermann, Otto"]
[Black "Katajisto, Olavi"]
[Result "0-1"]
[ECO "D30"]
[PlyCount "85"]
[EventDate "1954.09.12"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Finland"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "FIN"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 c5 5. cxd5 exd5 6. d4 Nc6 7. 0-0 cxd4 8. Nxd4 Bc5 9. Nxc6 bxc6 10. Qc2 Qb6 11. Nc3 Be7 12. e4 Be6 13. exd5 cxd5 14. Be3 Qa5 15. Qd2 Rd8 16. Qd4 Rd7 17. a3 0-0 18. b4 Qd8 19. h3 Ne8 20. Bf4 g5 21. Bd2 Ng7 22. Rfe1 Bf6 23. Qd3 Bf5 24. Qf1 Ne6 25. Rac1 Nd4 26. Rcd1 Nc2 27. Nxd5 Nxe1 28. Bxe1 Bg7 29. Bc3 Bxc3 30. Nxc3 Rxd1 31. Nxd1 Qd2 32. Ne3 Rc8 33. Qb5 Rc1+ 34. Kh2 Qxf2 35. Qb8+ Kg7 36. Qe5+ Kg6 37. g4 Bb1 38. Qd6+ f6 39. Nd5 Qg1+ 40. Kg3 Qe1+ 41. Kh2 Qe5+ 42. Qxe5 fxe5 43. b5 0-1

[Event "Olympiad-11 Final B"]
[Site "Amsterdam"]
[Date "1954.09.17"]
[Round "5"]
[White "Lemaire, Robert"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E14"]
[PlyCount "71"]
[EventDate "1954.09.12"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Belgium"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 Ne4 6. 0-0 f5 7. Nbd2 Bd6 8. Ne5 0-0 9. f3 Nf6 10. b3 Be7 11. Bc2 Nc6 12. Nd3 Nh5 13. Bb2 Nb4 14. Nxb4 Bxb4 15. Qe2 Qh4 16. Rfd1 Rad8 17. Nf1 d5 18. c5 bxc5 19. Qb5 Rb8 20. a3 c6 21. Qa4 f4 22. e4 cxd4 23. Qxb4 e5 24. Qd6 Rfe8 25. exd5 Nf6 26. Re1 Rbd8 27. Qb4 Ba6 28. dxc6 Nd5 29. Qd2 Bxf1 30. Rxf1 Ne3 31. Bd3 Rd6 32. Qe1 Qg5 33. Rf2 Rc8 34. Rc1 Rdxc6 35. Rxc6 Rxc6 36. Bc4+ 1-0

[Event "Olympiad-11 Final B"]
[Site "Amsterdam"]
[Date "1954.09.14"]
[Round "3"]
[White "Enevoldsen, Harald"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "E24"]
[PlyCount "84"]
[EventDate "1954.09.12"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Denmark"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "DEN"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 Qe7 6. f3 d6 7. e4 e5 8. Bd3 c5 9. Ne2 Nc6 10. 0-0 Nd7 11. f4 f6 12. Be3 b6 13. Ra2 Bb7 14. Kh1 Na5 15. Ng3 g6 16. Raf2 0-0-0 17. Qe2 h5 18. Qc2 h4 19. Ne2 h3 20. fxe5 dxe5 21. d5 f5 22. g3 fxe4 23. Bxe4 Nxc4 24. Bc1 Rdf8 25. Qd3 Rxf2 26. Rxf2 Rf8 27. Rxf8+ Qxf8 28. Kg1 Nd6 29. Bxg6 c4 30. Qe3 Bxd5 31. g4 Qg8 32. Qh6 Bf3 33. Ng3 Bxg4 34. Bf5 Nxf5 35. Qc6+ Kb8 36. Qxd7 Nxg3 37. Qd6+ Kb7 38. hxg3 Qf7 39. Qd2 Qf3 40. Kh2 Bf5 41. a4 Be6 42. Ba3 e4 0-1

[Event "Olympiad-11 Final B"]
[Site "Amsterdam"]
[Date "1954.09.13"]
[Round "2"]
[White "Cala, Ugo"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "E58"]
[PlyCount "83"]
[EventDate "1954.09.12"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Italy"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "ITA"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 c5 6. Nf3 Nc6 7. 0-0 d5 8. a3 Bxc3 9. bxc3 b6 10. cxd5 exd5 11. a4 c4 12. Bc2 Re8 13. Nd2 Bg4 14. f3 Bh5 15. Qe2 Bg6 16. Bxg6 hxg6 17. e4 dxe4 18. Nxe4 Qd5 19. Re1 Re6 20. Bd2 Rae8 21. Nxf6+ gxf6 22. Qf2 a6 23. Rxe6 Rxe6 24. Re1 b5 25. axb5 axb5 26. Rxe6 Qxe6 27. Qe3 Qxe3+ 28. Bxe3 b4 29. cxb4 Nxb4 30. Kf2 Nd5 31. h4 f5 32. g3 f6 33. Ke2 Kf7 34. Bc1 Ke6 35. Kd1 Nb4 36. Bd2 Nc6 37. Bc3 Kd5 38. g4 fxg4 39. fxg4 Nd8 40. h5 gxh5 41. gxh5 Nf7 42. Ke2 1/2-1/2

[Event "Olympiad-11 Final B"]
[Site "Amsterdam"]
[Date "1954.09.12"]
[Round "1"]
[White "Zimmermann, Otto"]
[Black "Haas, Adolf"]
[Result "1/2-1/2"]
[ECO "D36"]
[PlyCount "81"]
[EventDate "1954.09.12"]
[EventType "team-tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Saarland"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "GER"]

1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. Bg5 Nbd7 5. Nc3 c6 6. cxd5 exd5 7. e3 Be7 8. Qc2 h6 9. Bh4 0-0 10. Bd3 Re8 11. Bg3 Nf8 12. 0-0 Bd6 13. Rab1 Bxg3 14. hxg3 Qe7 15. b4 N8d7 16. Rfc1 Ne4 17. b5 Nxc3 18. Qxc3 cxb5 19. Bxb5 a6 20. Ba4 b5 21. Bb3 Nb6 22. Qc6 Rb8 23. Bc2 Be6 24. Qc3 Nc4 25. Ne5 Nxe5 26. dxe5 Rec8 27. Qd2 Rc5 28. Bb3 Rbc8 29. Rxc5 Qxc5 30. Rd1 Qc3 31. f4 Qxd2 32. Rxd2 Rc3 33. Kf2 a5 34. f5 Bxf5 35. Rxd5 Be6 36. Rxb5 a4 37. Bxa4 Bxa2 38. Rb8+ Kh7 39. Rb2 Be6 40. Bc2+ g6 41. Ba4 1/2-1/2

[Event "Olympiad-11 Preliminaries D"]
[Site "Amsterdam"]
[Date "1954.09.09"]
[Round "6"]
[White "Zimmermann, Otto"]
[Black "Sanchez, Luis Augusto"]
[Result "1/2-1/2"]
[ECO "E08"]
[PlyCount "83"]
[EventDate "1954.09.04"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Columbia"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "COL"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. 0-0 Be7 6. d4 c6 7. Qc2 0-0 8. Rd1 Re8 9. b3 Qc7 10. Nc3 b6 11. Bf4 Bd6 12. Bxd6 Qxd6 13. e4 dxe4 14. Nxe4 Nxe4 15. Qxe4 Bb7 16. Ne5 Rac8 17. Rac1 Nf6 18. Qf4 Qe7 19. Qf3 Red8 20. Qe2 Rd6 21. Qb2 c5 22. Bxb7 Qxb7 23. dxc5 Rxd1+ 24. Rxd1 bxc5 25. Qd2 h6 26. f3 Kh7 27. Qd3+ g6 28. Qd6 Kg7 29. Kf2 a5 30. Nd3 Qc7 31. Qxc7 Rxc7 32. Nb2 Rd7 33. Rxd7 Nxd7 34. Nd3 e5 35. Ke3 f5 36. Nb2 Kf6 37. Na4 Ke6 38. Nc3 Nb6 39. Kd3 Kd6 40. Nb5+ Kd7 41. Nc3 Ke6 42. a3 1/2-1/2

[Event "Olympiad-11 Preliminaries D"]
[Site "Amsterdam"]
[Date "1954.09.08"]
[Round "5"]
[White "Pfeiffer, Gerhard"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "B01"]
[PlyCount "34"]
[EventDate "1954.09.04"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "German Fed Rep"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "SUI"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nc3 e5 6. Nf3 exd4 7. Qxd4 Qxd4 8. Nxd4 c6 9. b3 Bb4 10. Bd2 0-0 11. Nc2 Re8+ 12. Be2 Bf8 13. 0-0 Na6 14. Bf3 Bf5 15. Nd4 Bd3 16. Rfd1 Rad8 17. Be3 Bg6 1/2-1/2

[Event "Olympiad-11 Preliminaries D"]
[Site "Amsterdam"]
[Date "1954.09.07"]
[Round "4"]
[White "Zimmermann, Otto"]
[Black "Kremer, P."]
[Result "1-0"]
[ECO "E10"]
[PlyCount "67"]
[EventDate "1954.09.04"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Luxembourg"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "LUX"]

1. Nf3 Nf6 2. c4 Nc6 3. d4 e6 4. a3 Be7 5. Nc3 d5 6. e3 0-0 7. Qc2 b6 8. b4 Bb7 9. cxd5 Nxd5 10. Bd3 f5 11. Nxd5 exd5 12. Bxf5 g6 13. Bd3 Bf6 14. h4 Qe7 15. Bb2 Rad8 16. Rc1 Rf7 17. Qa4 Rd6 18. b5 Na5 19. Bc3 Nc4 20. Bxc4 dxc4 21. Bb4 Bxf3 22. gxf3 Bxd4 23. Bxd6 cxd6 24. Rxc4 Bc5 25. Rf4 Rg7 26. Qb3+ Kh8 27. Ke2 h6 28. a4 h5 29. Rg1 Kh7 30. Rg5 Kh6 31. Qd5 Qc7 32. Rf6 Kh7 33. Qd3 Kg8 34. Rfxg6 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "1"]
[White "Beni, Alfred"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "80"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 c6 4. dxc6 Nxc6 5. d3 e5 6. Nf3 Bf5 7. Be2 Qd7 8. 0-0 0-0-0 9. Nc3 Bxd3 10. Bxd3 Qxd3 11. Qxd3 Rxd3 12. Re1 Bb4 13. Bd2 Rhd8 14. a3 Ba5 15. b4 Bc7 16. Rad1 Nd4 17. Nxd4 R8xd4 18. Be3 Rxc3 19. Bxd4 exd4 20. Rxd4 Rxa3 21. g3 Bd8 22. Red1 Be7 23. c5 Ra6 24. Re1 Re6 25. Rxe6 fxe6 26. Kf1 Kc7 27. Ke2 Kc6 28. Kd3 a5 29. bxa5 Bxc5 30. Rc4 Kb5 31. Rc2 Nd7 32. Rb2+ Bb4 33. Ke4 Kxa5 34. Ra2+ Kb5 35. Ra8 Kc4 36. Rc8+ Nc5+ 37. Ke5 Bc3+ 38. Kd6 Bd4 39. f4 b5 40. g4 b4 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "10"]
[White "Bhend, Edwin"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "B76"]
[PlyCount "29"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. 0-0-0 Na5 10. Bh6 Be6 11. h4 Bc4 12. h5 Bxf1 13. Bxg7 Kxg7 14. hxg6 h5 15. Nf5+ 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "4"]
[White "Grob, Henry"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E73"]
[PlyCount "57"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 Nbd7 6. Be3 e5 7. d5 Nc5 8. Qc2 a5 9. h4 h5 10. f3 Bd7 11. Nh3 0-0 12. Nf2 Qe7 13. Bg5 Qe8 14. g4 Nh7 15. Be3 Nf6 16. 0-0-0 a4 17. Rdg1 Kh8 18. Bg5 Rg8 19. Qd2 Kh7 20. Rg2 Qb8 21. Rhg1 Qa7 22. f4 exf4 23. gxh5 Nxh5 24. Bxh5 gxh5 25. Qe2 Nb3+ 26. axb3 Qe3+ 27. Qxe3 fxe3 28. Bxe3 a3 29. Kb1 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "3"]
[White "Nievergelt, Erwin"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E70"]
[PlyCount "71"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Bg5 Bg7 4. Nc3 c5 5. d5 d6 6. e4 h6 7. Be3 Qa5 8. f3 Na6 9. Qd2 Nc7 10. Bd3 a6 11. Nge2 Bd7 12. a4 b5 13. 0-0 bxc4 14. Bxc4 Rb8 15. e5 dxe5 16. Nc1 Qb4 17. b3 e4 18. N1a2 Qa5 19. Qf2 exf3 20. gxf3 Nh5 21. Bxc5 Na8 22. b4 Qc7 23. Rfe1 Be5 24. Bxe7 Kxe7 25. d6+ Qxd6 26. Rad1 Qc6 27. Rxe5+ Be6 28. Bxe6 fxe6 29. b5 axb5 30. axb5 Qc8 31. Nb4 Rb7 32. Ne4 Rd7 33. Re1 Kf7 34. Rxe6 Qc4 35. Nd6+ Rxd6 36. Rxd6 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "8"]
[White "Szabados, Eugenio"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "D13"]
[PlyCount "42"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. cxd5 cxd5 5. Nc3 e6 6. Bg5 Be7 7. e3 0-0 8. Bd3 Nc6 9. Rc1 Bd7 10. 0-0 a6 11. a3 b5 12. Qe2 Rc8 13. Bb1 Ne8 14. Bxe7 Nxe7 15. e4 dxe4 16. Nxe4 Nd5 17. Nc5 Nec7 18. Ne5 Be8 19. Rfe1 Rb8 20. b4 Rb6 21. g3 g6 1/2-1/2

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "6"]
[White "Walther, Edgar"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "B85"]
[PlyCount "65"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. 0-0 Nc6 8. Be3 Bd7 9. f4 Be7 10. Qe1 0-0 11. Qg3 Qc7 12. f5 Kh8 13. Qh3 Nxd4 14. Bxd4 e5 15. Be3 b5 16. Bd3 b4 17. Nd5 Nxd5 18. exd5 f6 19. Qh4 Rfb8 20. Rf3 Qc8 21. Kh1 Bb5 22. Rh3 Qg8 23. Be4 Rc8 24. Bd2 a5 25. Rg1 Be8 26. g4 Bf7 27. g5 fxg5 28. Bxg5 Bxg5 29. Qxg5 Bxd5 30. Rxh7+ Qxh7 31. Bxd5 Rxc2 32. h4 Rf8 33. Qg6 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "2"]
[White "Zimmermann, Otto"]
[Black "Canal, Esteban"]
[Result "1/2-1/2"]
[ECO "A04"]
[PlyCount "59"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 b6 3. Bg2 Bb7 4. d4 Nf6 5. c4 g6 6. 0-0 Bg7 7. Nc3 Qc8 8. Bf4 0-0 9. Qd2 Re8 10. Bh6 Bh8 11. h3 Ne4 12. Nxe4 Bxe4 13. Ne1 Bxg2 14. Nxg2 Nc6 15. e3 Nd8 16. e4 fxe4 17. Ne3 Nc6 18. Nc2 d6 19. Rae1 Qf5 20. g4 Qf7 21. b3 e5 22. Rxe4 Nxd4 23. Nxd4 exd4 24. Rfe1 Rxe4 25. Rxe4 Qf3 26. Rf4 Qc6 27. Qe2 Be5 28. Re4 Re8 29. f4 d3 30. Qxd3 1/2-1/2

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "9"]
[White "Zimmermann, Otto"]
[Black "Euwe, Max"]
[Result "0-1"]
[ECO "E67"]
[PlyCount "80"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. d4 Nbd7 7. Nc3 e5 8. Qc2 c6 9. Rd1 Re8 10. b4 e4 11. Ne1 d5 12. cxd5 cxd5 13. Bf4 Re6 14. Qb3 Nb6 15. Rac1 Nh5 16. Be3 Rc6 17. b5 Rc7 18. Rc2 Be6 19. Na4 Nc4 20. Nc5 Bc8 21. Bc1 Na5 22. Qa4 b6 23. Nb3 Rxc2 24. Nxc2 Nxb3 25. Qxb3 a5 26. Ne3 Be6 27. f3 exf3 28. Bxf3 Nf6 29. Ba3 Rc8 30. Rc1 Rxc1+ 31. Bxc1 Bh6 32. Qc2 Ne4 33. Ng2 Bxc1 34. Qxc1 Qf6 35. Qe3 Nd6 36. a4 Nf5 37. Qf4 Qxd4+ 38. e3 Qxf4 39. Nxf4 Nxe3 40. Kf2 d4 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "7"]
[White "Zimmermann, Otto"]
[Black "Kupper, Josef"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "85"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d3 Nc6 4. Nf3 d5 5. Nbd2 Nf6 6. Be2 Bd6 7. 0-0 0-0 8. Re1 Qc7 9. Qc2 b5 10. Nf1 h6 11. Ng3 Rb8 12. Bf1 b4 13. Qe2 dxe4 14. Nxe4 Be7 15. Be3 bxc3 16. bxc3 Nd5 17. Bxc5 f5 18. Bxe7 Qxe7 19. Ng3 Qa3 20. Rec1 Rb2 21. Qe1 Rxa2 22. c4 Ndb4 23. d4 Qb2 24. Rab1 Qa3 25. d5 exd5 26. cxd5 Nc2 27. Qd1 N6b4 28. Bc4 f4 29. d6+ Kh7 30. Nf1 Bf5 31. d7 Rd8 32. Ng5+ Kg6 33. Ne6 Bxe6 34. Bxe6 Rb2 35. Qd6 Rxb1 36. Rxb1 Qc3 37. Qxf4 Kh7 38. Qf7 Qf6 39. Bf5+ Kh8 40. Qe8+ Qf8 41. Qxf8+ Rxf8 42. Bxc2 Nxc2 43. Rc1 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "5"]
[White "Zimmermann, Otto"]
[Black "Schmid, Lothar"]
[Result "0-1"]
[ECO "B04"]
[PlyCount "64"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. b3 g6 7. Bb2 Bg7 8. Nf3 0-0 9. Be2 Nc6 10. 0-0 d5 11. cxd5 Nxd5 12. Qd2 Qd6 13. Na3 Nf4 14. Bb5 Ne6 15. Nc4 Qd5 16. Bxc6 bxc6 17. Rfd1 Rd8 18. Nfe5 Bb7 19. f3 Ba6 20. Rac1 Rac8 21. Qe1 Bh6 22. Ne3 Qb5 23. N5c4 Qh5 24. Rc2 Bf4 25. Ng4 Qb5 26. g3 Bb8 27. Kg2 h5 28. Nge5 Qd5 29. Ne3 Qb5 30. N3c4 Rc7 31. Nxg6 Qf5 32. Nge5 Qxc2+ 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1954.??.??"]
[Round "11"]
[White "Zimmermann, Otto"]
[Black "Trifunovic, Petar"]
[Result "1/2-1/2"]
[ECO "A37"]
[PlyCount "111"]
[EventDate "1954.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. 0-0 e5 7. d3 Nge7 8. e4 0-0 9. Be3 f5 10. Qd2 fxe4 11. dxe4 Nd4 12. Ne1 Be6 13. Nd5 Nxd5 14. exd5 Bd7 15. f4 Nf5 16. fxe5 Nxe3 17. Qxe3 Bxe5 18. Nf3 Bf6 19. Rae1 Qa5 20. Qh6 Rae8 21. Rxe8 Rxe8 22. Qf4 Be7 23. Ng5 Rf8 24. Qh4 Rxf1+ 25. Bxf1 Bxg5 26. Qxg5 Qe1 27. Qd8+ Qe8 28. Qxe8+ Bxe8 29. Bh3 Kg7 30. Kf2 Kf6 31. Ke3 Ke5 32. Bf1 g5 33. Bd3 h6 34. Bc2 b5 35. b3 Bd7 36. Bd3 b4 37. Bc2 a5 38. Bd3 a4 39. Bc2 a3 40. Bd3 Bg4 41. Bc2 Bh3 42. Be4 h5 43. Bc2 h4 44. Be4 Bg4 45. Bc2 hxg3 46. hxg3 Bh5 47. Bb1 Bd1 48. Kd2 Bg4 49. Ke3 Kf6 50. Bc2 Kg7 51. Be4 Bd1 52. Bb1 Kh6 53. Kd2 Bf3 54. Ke3 Bg4 55. Bc2 Kh5 56. Be4 1/2-1/2

[Event "Match/Nation SUI-GER"]
[Site "Luzern"]
[Date "1952.??.??"]
[Round "1.5"]
[White "Staudte, Hans Hilmar"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "C02"]
[PlyCount "81"]
[EventDate "1952.??.??"]
[EventType "team"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 b6 5. Bf4 Ba6 6. Bxa6 Nxa6 7. Qe2 Nc7 8. Nbd2 Ne7 9. 0-0 Ng6 10. Bg3 Be7 11. Rfd1 0-0 12. Rac1 c4 13. Qe3 b5 14. Ne1 b4 15. f4 Nb5 16. Nf1 c3 17. b3 a5 18. Bf2 Qd7 19. Ng3 a4 20. Nh5 f6 21. exf6 gxf6 22. Nd3 axb3 23. axb3 Ra2 24. Re1 Na3 25. Re2 Rf7 26. Ne1 Nf8 27. Bh4 Nb5 28. g4 Nd6 29. Nf3 Ne4 30. g5 Ng6 31. gxf6 Nxh4 32. Ne5 Qa7 33. fxe7 Qxe7 34. Nxf7 Qxf7 35. Ng3 Qg6 36. Kh1 Nf5 37. Nxf5 Qxf5 38. Rg2+ Kf7 39. Rcg1 Ke7 40. Rg8 Rxc2 41. Rf1 1/2-1/2

[Event "Match/Nation SUI-GER"]
[Site "Luzern"]
[Date "1952.??.??"]
[Round "2.5"]
[White "Zimmermann, Otto"]
[Black "Staudte, Hans Hilmar"]
[Result "1/2-1/2"]
[ECO "D57"]
[PlyCount "41"]
[EventDate "1952.??.??"]
[EventType "team"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 0-0 6. e3 h6 7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Rd8 12. c4 Nc6 13. c5 a6 14. Be2 Rb8 15. 0-0 Bg4 16. Rfc1 f5 17. h3 Bh5 18. Qc2 Bxf3 19. Bxf3 Qf7 20. Qd2 Qf6 21. Rab1 1/2-1/2

[Event "Match/Nation SUI-ARG"]
[Site "Zuerich"]
[Date "1950.??.??"]
[Round "2"]
[White "Marini, Luis"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "77"]
[EventDate "1950.??.??"]
[EventType "team"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. dxc5 Nc6 5. Nf3 Qc7 6. Bf4 Bxc5 7. Bd3 Nge7 8. Qe2 f5 9. h4 Bd7 10. c3 a5 11. a4 d4 12. Na3 Nd5 13. Nb5 Qb6 14. Bd2 dxc3 15. bxc3 0-0 16. Rb1 Nd8 17. 0-0 Bxb5 18. Rxb5 Qc7 19. Bc4 Re8 20. Ng5 b6 21. Nxe6 Nxe6 22. Bxd5 Rad8 23. Bxe6+ Rxe6 24. Bf4 Qd7 25. Qc4 Qd5 26. Qxd5 Rxd5 27. Rfb1 Rd3 28. Rc1 Ba3 29. Rc2 Rc6 30. Rb1 Bb4 31. cxb4 Rxc2 32. bxa5 bxa5 33. e6 Rc8 34. Rb5 Rd4 35. Be5 Rxh4 36. f3 Rh6 37. Rb7 Rxe6 38. Bxg7 Rg6 39. Bd4 1-0

[Event "Match/Nation SUI-BEL"]
[Site "Switzerland"]
[Date "1950.??.??"]
[Round "?"]
[White "Thibaut, Georges Pierre"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E11"]
[PlyCount "59"]
[EventDate "1950.??.??"]
[EventType "match"]
[EventRounds "1"]
[EventCountry "SUI"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. g3 0-0 6. a3 Bxd2+ 7. Nbxd2 d6 8. Bg2 e5 9. dxe5 dxe5 10. e3 a5 11. Qc2 Nbd7 12. 0-0 a4 13. Ne4 Nxe4 14. Qxe4 c6 15. Rad1 f5 16. Qc2 Nc5 17. Qc3 Re8 18. Ne1 Be6 19. Nd3 Bf7 20. Rfe1 Rad8 21. Bf1 Ne4 22. Qc2 b5 23. Nb4 Qc5 24. cxb5 Qxc2 25. Nxc2 Bb3 26. Rxd8 Rxd8 27. Nb4 Nd2 28. Rc1 Nxf1 29. Nxc6 Nxg3 30. hxg3 1-0

[Event "Match/Nation SUI-ARG"]
[Site "Zuerich"]
[Date "1950.??.??"]
[Round "1"]
[White "Zimmermann, Otto"]
[Black "Marini, Luis"]
[Result "0-1"]
[ECO "E19"]
[PlyCount "106"]
[EventDate "1950.??.??"]
[EventType "team"]
[EventRounds "2"]
[EventCountry "SUI"]
[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 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. Ne5 Bxg2 11. Kxg2 Qc8 12. Qf3 c6 13. Bd2 d6 14. Nd3 Bf6 15. Bc3 Nd7 16. Qf4 Qc7 17. c5 bxc5 18. dxc5 Bxc3 19. cxd6 Qa5 20. bxc3 Qd5+ 21. Kg1 e5 22. Qb4 c5 23. Qb3 c4 24. Nb4 Qc5 25. Qd1 Nb6 26. Qd2 Rad8 27. Rad1 Rf6 28. Qe3 Qxe3 29. fxe3 Rfxd6 30. Rxd6 Rxd6 31. Rxf5 a5 32. Nc2 Rd2 33. Na3 Rxa2 34. Nb5 Nd7 35. Nd6 Ra1+ 36. Kg2 a4 37. Rf7 Nf6 38. Ra7 h6 39. Nxc4 Nd5 40. Nxe5 Nxc3 41. h4 h5 42. Nf3 a3 43. Ng5 g6 44. Nh7 a2 45. Nf6+ Kf8 46. e4 Re1 47. Nd5 Nxd5 48. Rxa2 Nc3 49. Ra3 Nxe4 50. Kf3 Nf6 51. Ra7 Rf1+ 52. Kg2 Rf5 53. Rb7 Ng4 0-1

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "3"]
[White "Barcza, Gedeon"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "D11"]
[PlyCount "71"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bf5 4. b3 e6 5. Bb2 Nf6 6. 0-0 Nbd7 7. c4 h6 8. Nc3 Be7 9. d4 0-0 10. Nd2 Qb6 11. e4 dxe4 12. Ncxe4 Nxe4 13. Nxe4 Nf6 14. Nd2 Rfd8 15. Qc1 Nd7 16. c5 Qc7 17. Nc4 Nf6 18. Ne3 Bd3 19. Re1 Re8 20. b4 a5 21. Qd2 Be4 22. bxa5 Bxg2 23. Kxg2 Rxa5 24. Nc4 Ra6 25. a4 Nd5 26. a5 Rb8 27. Ra3 Qd8 28. Rf3 Bg5 29. Qd3 Be7 30. Bc1 Bg5 31. Nd6 Qxa5 32. Rxf7 Qxe1 33. Qg6 Bf6 34. Bxh6 Ne3+ 35. Bxe3 Ra1 36. Rxf6 1-0

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "13"]
[White "Fletzer, Gino"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "C47"]
[PlyCount "86"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nd5 Be7 6. Bb5 0-0 7. 0-0 d6 8. Bxc6 bxc6 9. Nxf6+ Bxf6 10. Nxd4 c5 11. Ne2 Ba6 12. Re1 Rb8 13. c3 Re8 14. Nf4 g6 15. f3 Bg7 16. g3 Qd7 17. Qc2 f5 18. Nd5 c6 19. Ne3 fxe4 20. fxe4 d5 21. Rd1 d4 22. Nf1 Qg4 23. Bf4 Rbd8 24. c4 Qf3 25. Nd2 d3 26. Qc3 Qxd1+ 27. Rxd1 Bxc3 28. bxc3 Rd7 29. Kf2 Rb7 30. Ke3 Rb2 31. Bd6 Rxa2 32. Kxd3 Bc8 33. Rb1 Rd8 34. e5 Bf5+ 35. Ne4 Rxh2 36. Rb7 h5 37. Rxa7 h4 38. Ke3 Bxe4 39. Kxe4 h3 40. Be7 Re8 41. Bf6 Rf2 42. Kd3 h2 43. Rg7+ Kh8 0-1

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "9"]
[White "Gligoric, Svetozar"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "E28"]
[PlyCount "112"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. a3 Bxc3+ 6. bxc3 d6 7. Bd3 e5 8. Ne2 Re8 9. 0-0 Nc6 10. Ng3 Qe7 11. f3 b6 12. Qc2 h6 13. Rb1 Bd7 14. Qf2 Na5 15. e4 c5 16. Be3 cxd4 17. cxd4 Rac8 18. Rfc1 Rc7 19. dxe5 Qxe5 20. Bd4 Qg5 21. Nf1 Nc6 22. f4 Qg6 23. f5 Qh7 24. Bxf6 gxf6 25. Ne3 Qg7 26. Nd5 Rcc8 27. Rc3 Kf8 28. Qf4 Re5 29. Bf1 Ne7 30. Nxe7 Kxe7 31. Rg3 Qf8 32. Rd1 Bc6 33. Rgd3 Rd8 34. Rd4 Rd7 35. Qd2 Qb8 36. Bd3 Ba4 37. Bc2 Bxc2 38. Qxc2 Qc7 39. Kh1 b5 40. Qd3 bxc4 41. Rxc4 Rc5 42. Rd4 Rc1 43. Qe3 Rxd1+ 44. Rxd1 Qc5 45. Qxh6 Qxa3 46. Qd2 Rc7 47. Qf4 Rc8 48. h4 Qb4 49. h5 Rc4 50. Qf2 Rxe4 51. g3 Kf8 52. Kg2 Kg7 53. Kh3 a5 54. Rc1 Qb7 55. Rd1 d5 56. Qa2 d4 1/2-1/2

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "15"]
[White "Golombek, Harry"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E11"]
[PlyCount "47"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Bxd2+ 5. Nxd2 d5 6. Bg2 Nbd7 7. Ngf3 0-0 8. 0-0 c6 9. Qc2 Qe7 10. e4 dxc4 11. Nxc4 c5 12. Rfd1 cxd4 13. Nxd4 Qc5 14. Rac1 Nb6 15. Nb3 Qxc4 16. Qxc4 Nxc4 17. Rxc4 Bd7 18. e5 Nd5 19. Na5 b6 20. Nc6 Rfe8 21. Nb4 Rad8 22. Nxd5 exd5 23. Bxd5 Rxe5 24. Bc6 1-0

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "7"]
[White "Kottnauer, Cenek"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E69"]
[PlyCount "71"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nc3 d6 6. e4 Nbd7 7. Nge2 e5 8. 0-0 exd4 9. Nxd4 Re8 10. Re1 c6 11. h3 Nc5 12. Qc2 Nfxe4 13. Nxe4 Bxd4 14. Bg5 Qd7 15. Nf6+ Bxf6 16. Bxf6 Re6 17. Bc3 Qe7 18. Qd2 f6 19. Rad1 Qf8 20. b3 Rxe1+ 21. Rxe1 Bd7 22. Rd1 Be6 23. Qf4 Nd7 24. Rxd6 Re8 25. Qd4 Qe7 26. c5 Ne5 27. Qf4 g5 28. Qe3 Nd7 29. Kh2 Qf7 30. Qd4 h6 31. f4 Kg7 32. Bf1 Re7 33. Bd3 Bd5 34. Bf5 gxf4 35. Bxd7 fxg3+ 36. Kg1 1-0

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "11"]
[White "Prins, Lodewijk"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "C08"]
[PlyCount "65"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 a6 5. exd5 exd5 6. Be2 Nf6 7. 0-0 Nbd7 8. Ne5 cxd4 9. Nxd7 Bxd7 10. Nf3 Qc7 11. Qxd4 Bc5 12. Qh4 Bd6 13. c4 dxc4 14. Bxc4 0-0 15. Bg5 Ne8 16. Bd3 f5 17. Rac1 Qb8 18. Bc4+ Kh8 19. Be3 Nf6 20. Ng5 Qe8 21. Rfd1 Be7 22. Be6 h6 23. Qh3 Rc8 24. Qxf5 Rxc1 25. Rxc1 Bc6 26. Qh3 Nd5 27. Bxd5 Bxd5 28. Ne6 Rf6 29. Nc7 Qg8 30. Qd7 Bd6 31. Ne8 Rg6 32. Nxd6 Bxg2 33. Nf7+ 1-0

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "5"]
[White "Stalda, Giuseppe"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "102"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. h3 Bg7 5. Nf3 0-0 6. Be3 Nbd7 7. Bc4 c6 8. e5 dxe5 9. dxe5 Nd5 10. Nxd5 cxd5 11. Qxd5 e6 12. Qe4 Nxe5 13. Nxe5 Qa5+ 14. Bd2 Qxe5 15. Qxe5 Bxe5 16. 0-0-0 b5 17. Bd3 Bb7 18. f3 Bd5 19. Kb1 f5 20. f4 Bf6 21. Rh2 a6 22. g4 Rfe8 23. g5 Bg7 24. Re1 e5 25. fxe5 Rxe5 26. Rxe5 Bxe5 27. Re2 Bd6 28. Rf2 Re8 29. Kc1 Kf7 30. a3 Be4 31. Bf1 Bg3 32. Re2 Rc8 33. c3 Rd8 34. Be3 Rd3 35. Bd2 Rd7 36. Bg2 Bd3 37. Bc6 Rd8 38. Rg2 f4 39. Bf3 Bf5 40. Rg1 Rd3 41. Be2 Rd8 42. Bf3 Ke6 43. h4 Ke5 44. Rg2 Bd3 45. Rg1 Be4 46. Rf1 Bxf3 47. Rxf3 Kf5 48. Kc2 Kg4 49. Rd3 Rxd3 50. Kxd3 Bxh4 51. b3 Bxg5 0-1

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "1"]
[White "Zimmermann, Otto"]
[Black "Canal, Esteban"]
[Result "1-0"]
[ECO "D40"]
[PlyCount "87"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. Nxd4 e5 8. Nf3 d4 9. exd4 exd4 10. Nb5 Bg4 11. Nbxd4 Nxd4 12. Qxd4 Qxd4 13. Nxd4 0-0-0 14. Be3 Bc5 15. Nc2 Rhe8 16. Be2 Bxe2 17. Kxe2 Re4 18. Rad1 Rde8 19. Kd3 Nd7 20. b4 Bxe3 21. Nxe3 Rf4 22. f3 Re6 23. Rhe1 Rh4 24. h3 Ra6 25. Nc2 Rg6 26. Kc3 Nb6 27. Re8+ Kc7 28. Re7+ Kc8 29. Ne3 Re6 30. Rxe6 fxe6 31. c5 Nd7 32. Rd4 Rh5 33. Nc4 Nf6 34. Nd6+ Kb8 35. Ne8 Nxe8 36. Rd8+ Kc7 37. Rxe8 Kd7 38. Rg8 Rg5 39. g4 a5 40. Kc4 axb4 41. axb4 Rg6 42. b5 Rh6 43. c6+ bxc6 44. b6 1-0

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "2"]
[White "Zimmermann, Otto"]
[Black "Foltys, Jan"]
[Result "0-1"]
[ECO "D11"]
[PlyCount "80"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 d5 3. g3 c6 4. Bg2 Bf5 5. 0-0 e6 6. b3 h6 7. Bb2 Nbd7 8. Nbd2 Be7 9. c4 0-0 10. a3 a5 11. c5 b6 12. b4 Qc7 13. Nh4 Bh7 14. f4 Rfb8 15. Bc3 axb4 16. axb4 Ng4 17. Rxa8 Rxa8 18. Qc1 Ra2 19. Bh3 Bxh4 20. Bxg4 Bf6 21. e4 dxe4 22. Nc4 bxc5 23. bxc5 Qa7 24. Qe3 Qa4 25. Be2 Qc2 26. Bd2 Bf5 27. Rc1 Qa4 28. g4 Bg6 29. g5 hxg5 30. fxg5 Be7 31. Kf2 Qa7 32. Qc3 Qc7 33. Kg1 Bxg5 34. Bxg5 Rxe2 35. Qh3 f6 36. Be3 Nf8 37. Nd6 Qa5 38. Qg3 Qa3 39. Nc4 Qd3 40. h4 Ra2 0-1

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "10"]
[White "Zimmermann, Otto"]
[Black "Mueller, Hans"]
[Result "1/2-1/2"]
[ECO "D74"]
[PlyCount "40"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d5 6. cxd5 Nxd5 7. e4 Nb6 8. Nc3 Na6 9. 0-0 Bg4 10. Be3 Qd7 11. Qe2 Bh3 12. Rfd1 Bxg2 13. Kxg2 f5 14. Bf4 e6 15. Ne5 Bxe5 16. Bxe5 c6 17. f4 Nc7 18. h4 h5 19. Rac1 Ne8 20. a4 a5 1/2-1/2

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "6"]
[White "Zimmermann, Otto"]
[Black "Paoli, Enrico"]
[Result "0-1"]
[ECO "D44"]
[PlyCount "36"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. Bg5 Nf6 6. e4 b5 7. e5 h6 8. Bh4 g5 9. Nxg5 hxg5 10. Bxg5 Nbd7 11. exf6 Qa5 12. Be2 Bb7 13. 0-0 0-0-0 14. Bf4 Nxf6 15. Bf3 Bd6 16. Bxd6 Rxd6 17. Ne2 Qc7 18. h3 e5 0-1

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "14"]
[White "Zimmermann, Otto"]
[Black "Rossolimo, Nicolas"]
[Result "1/2-1/2"]
[ECO "A95"]
[PlyCount "63"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 e6 4. 0-0 Be7 5. d4 0-0 6. c4 c6 7. Nc3 d5 8. Qb3 Kh8 9. Ne5 Nbd7 10. cxd5 exd5 11. Nxd7 Qxd7 12. Bf4 Nh5 13. Be5 f4 14. Bf3 Qe8 15. e4 Bh3 16. exd5 Bxf1 17. Rxf1 fxg3 18. fxg3 Bf6 19. Qd1 Bxe5 20. dxe5 Nxg3 21. hxg3 Qxe5 22. Kg2 Rad8 23. Be4 Rxf1 24. Qxf1 cxd5 25. Bxd5 g6 26. Qf4 Qxf4 27. gxf4 Kg7 28. Kf3 b6 29. Kg4 Re8 30. Be4 Rd8 31. Nd5 Rc8 32. Nc3 1/2-1/2

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "8"]
[White "Zimmermann, Otto"]
[Black "Szabados, Eugenio"]
[Result "1/2-1/2"]
[ECO "E19"]
[PlyCount "38"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. 0-0 Be7 6. c4 0-0 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. Ne5 Bxg2 11. Kxg2 d6 12. Qf3 Nd7 13. Nc6 Qe8 14. e4 Kh8 15. exf5 Rxf5 16. Qe2 Bf8 17. Bd2 e5 18. Rae1 Nc5 19. d5 Qf7 1/2-1/2

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "12"]
[White "Zimmermann, Otto"]
[Black "Szabo, Laszlo"]
[Result "1/2-1/2"]
[ECO "D74"]
[PlyCount "56"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. c4 d5 6. cxd5 Nxd5 7. e4 Nb6 8. Nc3 Bg4 9. Be3 Nc4 10. Qb3 Nxe3 11. fxe3 b6 12. e5 Nc6 13. Nd2 Na5 14. Qa3 c5 15. Bxa8 Qxa8 16. 0-0 cxd4 17. exd4 Bh6 18. Rf4 Bh3 19. d5 Bxf4 20. gxf4 Qc8 21. Nce4 Nc4 22. Nxc4 Qxc4 23. Nf2 Bc8 24. Qxe7 Qxd5 25. Rd1 Qc6 26. Qf6 Qc2 27. Rd8 Qc1+ 28. Nd1 h6 1/2-1/2

[Event "Venice"]
[Site "Venice"]
[Date "1949.??.??"]
[Round "4"]
[White "Zimmermann, Otto"]
[Black "Tartakower, Saviely"]
[Result "1/2-1/2"]
[ECO "A98"]
[PlyCount "59"]
[EventDate "1949.??.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "ITA"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 d6 3. d4 Nf6 4. Bg2 e6 5. c4 Be7 6. Nc3 0-0 7. 0-0 Qe8 8. Qc2 Qh5 9. e4 Nc6 10. exf5 exf5 11. Nd5 Nxd5 12. cxd5 Nb4 13. Qc4 Na6 14. Re1 Bd8 15. Bd2 g5 16. h3 Nb8 17. Qe2 f4 18. g4 Qf7 19. Bc3 Nd7 20. Qe6 Nb6 21. Qxf7+ Kxf7 22. Nd2 Na4 23. Be4 Kg7 24. Rac1 Bd7 25. Kg2 Nxc3 26. bxc3 Bf6 27. Rb1 b6 28. Bd3 Rae8 29. Rxe8 Rxe8 30. Be4 1/2-1/2

[Event "Match/Nation FRA-SUI"]
[Site "France"]
[Date "1946.??.??"]
[Round "1.2"]
[White "Gibaud, Amedee"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "129"]
[EventDate "1946.??.??"]
[EventType "team-match"]
[EventRounds "2"]
[EventCountry "FRA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "France"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "FRA"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 4. e4 d6 5. Bd3 0-0 6. 0-0 Re8 7. c3 e5 8. d5 c6 9. c4 Nh5 10. Re1 f5 11. Nf1 f4 12. h3 Nd7 13. dxc6 bxc6 14. Bc2 Nc5 15. b4 Ne6 16. Rb1 Qe7 17. Ba4 Bd7 18. Ba3 Rf8 19. Rb3 Rf7 20. Rd3 Nd4 21. Nxd4 exd4 22. Nh2 a5 23. bxa5 Rxa5 24. Bb4 Rxa4 25. Qxa4 c5 26. Qa8+ Rf8 27. Qb7 cxb4 28. Nf3 Qe6 29. Qxb4 Be5 30. Nxd4 Qe7 31. Nf3 Re8 32. Red1 Nf6 33. Nxe5 dxe5 34. c5 Bc6 35. f3 Rc8 36. Rd6 Ne8 37. R6d3 Kf8 38. Qb6 Qc7 39. Rd8 Ke7 40. Rxc8 Qxc8 41. Rd3 Qa8 42. Qb2 Ke6 43. Qb3+ Kf6 44. Qg8 Qa5 45. Qf8+ Ke6 46. Rd1 Qb5 47. Kh2 Qb7 48. h4 Qe7 49. Qh6 Qxc5 50. Qxh7 Nf6 51. Qxg6 Qf2 52. Qf5+ Kf7 53. Qg5 Bxe4 54. fxe4 Qe2 55. Rb1 Ng4+ 56. Kh1 Qxe4 57. Qxg4 Qxb1+ 58. Kh2 Qxa2 59. Qf5+ Kg8 60. Qxe5 Qf2 61. Qg5+ Kh8 62. h5 Qd4 63. Kh3 Qd1 64. Qxf4 Qxh5+ 65. Qh4 1-0

[Event "Match/Nation FRA-SUI"]
[Site "France"]
[Date "1946.??.??"]
[Round "2.2"]
[White "Zimmermann, Otto"]
[Black "Gibaud, Amedee"]
[Result "1-0"]
[ECO "E18"]
[PlyCount "107"]
[EventDate "1946.??.??"]
[EventType "team-match"]
[EventRounds "2"]
[EventCountry "FRA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "France"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "FRA"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. Nc3 0-0 7. Qc2 d6 8. e4 Nbd7 9. 0-0 Ne8 10. Re1 e5 11. Be3 c6 12. Rad1 Qc7 13. Bh3 Rd8 14. Qa4 Bc8 15. Bg2 a6 16. Rd2 b5 17. cxb5 axb5 18. Qc2 Qa5 19. Red1 Nef6 20. b3 h6 21. h3 Nh7 22. Ne2 d5 23. Nxe5 Nxe5 24. dxe5 Bb4 25. Rd3 dxe4 26. Rxd8 Rxd8 27. Rxd8+ Qxd8 28. Bxe4 Ng5 29. Bxg5 hxg5 30. Qxc6 Bxh3 31. Qxb5 Qd1+ 32. Kh2 Bc8 33. Qxb4 Qxe2 34. Qd4 g6 35. a4 Be6 36. b4 Kh7 37. b5 Qh5+ 38. Kg1 Qg4 39. b6 Bf5 40. b7 Bxe4 41. b8Q Qf3 42. Kf1 Bd3+ 43. Kg1 Be4 44. Qxe4 Qxe4 45. Qb5 Qe1+ 46. Kg2 Qe4+ 47. Kh2 Qd4 48. Kg1 g4 49. a5 Qd1+ 50. Kh2 Qd2 51. Qb6 Qd5 52. a6 Qxe5 53. a7 Qd5 54. Qb8 1-0

[Event "EU olm corr3539"]
[Site "ICCF corr"]
[Date "1935.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Duchamp, Marcel"]
[Result "1/2-1/2"]
[ECO "E52"]
[PlyCount "53"]
[EventDate "1935.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 d5 6. Nf3 b6 7. 0-0 Bb7 8. Ne5 Nc6 9. Nxc6 Bxc6 10. Bd2 a6 11. Nxd5 Nxd5 12. cxd5 Qxd5 13. f3 Bxd2 14. Qxd2 Bb5 15. Be4 Qd7 16. Rfd1 Rac8 17. Rac1 c5 18. dxc5 Qxd2 19. Rxd2 bxc5 20. Rc3 c4 21. Bc2 a5 22. Rd6 Rfd8 23. Rxd8+ Rxd8 24. Ra3 Ra8 25. Ba4 Rb8 26. Bd1 Bc6 27. Rxa5 1/2-1/2

[Event "SUI-POR corr"]
[Site "Switzerland"]
[Date "1933.??.??"]
[Round "3"]
[White "Zimmermann, Otto"]
[Black "Pires, AM."]
[Result "1-0"]
[ECO "D64"]
[PlyCount "77"]
[EventDate "1933.??.??"]
[EventType "team (corr)"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 Be7 6. Nf3 0-0 7. Rc1 c6 8. Qc2 a6 9. a3 b5 10. c5 Nh5 11. Bf4 f5 12. Bd3 Nhf6 13. 0-0 Qe8 14. Ne2 Ne4 15. Ne5 Nxe5 16. Bxe5 Ng5 17. Kh1 Bf6 18. f4 Ne4 19. g4 Ra7 20. g5 Bxe5 21. dxe5 a5 22. Bxe4 fxe4 23. Qd2 a4 24. Nd4 Bd7 25. Qd1 Qg6 26. Rc2 Re8 27. Rcf2 Rc7 28. h4 Re7 29. h5 Qe8 30. Qg4 Rb7 31. g6 h6 32. f5 exf5 33. Nxf5 Bxf5 34. Rxf5 Rb8 35. e6 Qc8 36. Qf4 Qd8 37. Rf7 Rc8 38. Qe5 Rxf7 39. gxf7+ 1-0

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.24"]
[Round "17"]
[White "Halvorsen, Trygve"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E16"]
[PlyCount "113"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Norway"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "NOR"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. e3 e6 6. c4 cxd4 7. exd4 Bb4+ 8. Bd2 Bxd2+ 9. Nbxd2 0-0 10. 0-0 d5 11. Ne5 Nc6 12. cxd5 Nxd5 13. Ne4 Qe7 14. Rc1 Rac8 15. a3 f5 16. Nxc6 Bxc6 17. Nd2 Bb7 18. Qa4 Rc7 19. Rxc7 Qxc7 20. Re1 f4 21. Bh3 Bc8 22. Qc4 Qxc4 23. Nxc4 Rf6 24. Ne5 h5 25. Rc1 Bb7 26. Nd7 Rh6 27. Bg2 fxg3 28. fxg3 h4 29. Rf1 g5 30. Rf8+ Kg7 31. Rb8 Ba6 32. Ra8 hxg3 33. hxg3 Bb5 34. Rxa7 Kg6 35. Be4+ Kh5 36. Ne5 Nf6 37. Bc2 Be2 38. Rg7 Rh8 39. Kf2 Rc8 40. Bb1 Rc1 41. Nf7 Kg4 42. Rxg5+ Kh3 43. Kxe2 Rxb1 44. Rb5 Nd5 45. Rb3 Kg4 46. Ne5+ Kf5 47. Nc4 Rg1 48. Nxb6 Nxb6 49. Rxb6 Rxg3 50. a4 Rg4 51. Rb5+ Ke4 52. Kd2 Rg3 53. Rb4 Kd5 54. a5 Rg1 55. Ra4 Rg2+ 56. Kc3 Rg3+ 57. Kc2 1-0

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.23"]
[Round "16"]
[White "Marshall, Frank James"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "E12"]
[PlyCount "102"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "United States"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. Nf3 b6 3. c4 e6 4. Nc3 Bb7 5. Bg5 Be7 6. Qc2 c5 7. d5 Nxd5 8. cxd5 Bxg5 9. Nb5 0-0 10. d6 Nc6 11. a3 Rc8 12. e3 f5 13. Bd3 Bf6 14. Rd1 a6 15. Nc7 Ne5 16. Be2 Rxc7 17. dxc7 Qxc7 18. Nxe5 Bxe5 19. f4 Bf6 20. 0-0 d5 21. b3 b5 22. Bf3 Rd8 23. Rb1 g6 24. Rfc1 Rc8 25. Qe2 e5 26. fxe5 Qxe5 27. a4 Bg5 28. Re1 b4 29. Rbc1 Qd6 30. Rcd1 Re8 31. Qd3 Re5 32. e4 Qe7 33. Qc2 fxe4 34. Bg4 Kg7 35. Rf1 d4 36. Be2 d3 37. Bxd3 exd3 38. Qxd3 Re2 39. Rf2 Re1+ 40. Rf1 Qe3+ 41. Qxe3 Bxe3+ 42. Kh1 Rxf1+ 43. Rxf1 Bd5 44. Re1 Bd4 45. Re7+ Kf6 46. Ra7 Bxb3 47. Rxa6+ Ke5 48. a5 c4 49. Rc6 c3 50. a6 c2 51. Rc7 Kd6 0-1

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.22"]
[Round "15"]
[White "Zimmermann, Otto"]
[Black "Scheinberg, Matafia"]
[Result "1-0"]
[ECO "D11"]
[PlyCount "79"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Lithuania"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "LTU"]

1. d4 d5 2. c4 c6 3. Nf3 Bf5 4. cxd5 cxd5 5. Nc3 e6 6. Ne5 f6 7. Qa4+ Nd7 8. Nxd7 Qxd7 9. Qb3 Ne7 10. Bf4 Nc6 11. e3 Be7 12. Bb5 0-0 13. 0-0 Bg6 14. Rac1 Rfc8 15. Na4 Be8 16. Nc5 Bxc5 17. Rxc5 Qf7 18. Rfc1 h5 19. h4 Rd8 20. Qc3 Qg6 21. Bd3 Qg4 22. Qb3 Rd7 23. Bg3 g5 24. hxg5 h4 25. Bh2 h3 26. Bg3 hxg2 27. Kxg2 Bh5 28. Rb5 Qf3+ 29. Kg1 Bg4 30. Bf1 Rf8 31. Bg2 Qf5 32. gxf6 Qxf6 33. Rxb7 Na5 34. Rxd7 Nxb3 35. axb3 Qf5 36. Rxa7 Bf3 37. Be5 Rd8 38. Rcc7 Bxg2 39. Rg7+ Kf8 40. Rh7 1-0

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.21"]
[Round "13"]
[White "Zimmermann, Otto"]
[Black "Stoltz, Gosta"]
[Result "0-1"]
[ECO "D51"]
[PlyCount "92"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Sweden"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "SWE"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Nbd7 5. e3 c6 6. a3 a6 7. cxd5 cxd5 8. Nf3 b5 9. Bd3 Be7 10. 0-0 Bb7 11. Qb1 Rc8 12. Rc1 Ne4 13. Bxe7 Qxe7 14. Bxe4 dxe4 15. Nd2 f5 16. b4 0-0 17. Nb3 f4 18. exf4 Rxf4 19. Ne2 Rff8 20. Rxc8 Rxc8 21. Nc5 Nxc5 22. dxc5 e3 23. fxe3 Qg5 24. Nf4 Qe5 25. Qe1 g5 26. Nh5 Qb2 27. e4 Bxe4 28. Ra2 Qxa2 29. Nf6+ Kg7 30. Nxe4 Qd5 31. Qc3+ e5 32. Nxg5 Qd4+ 33. Qxd4 exd4 34. Ne6+ Kf6 35. Nxd4 Rd8 36. Ne2 Rd3 37. c6 Ke7 38. Nf4 Rd1+ 39. Kf2 Kd6 40. Ke2 Ra1 41. c7 Kxc7 42. Ne6+ Kd6 43. Ng5 h5 44. Ke3 Rxa3+ 45. Kd4 Rb3 46. Ne4+ Kc6 0-1

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.20"]
[Round "12"]
[White "Zimmermann, Otto"]
[Black "Becker, Albert"]
[Result "0-1"]
[ECO "D61"]
[PlyCount "102"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Austria"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "AUT"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. Bg5 Nbd7 5. e3 c6 6. a3 Be7 7. Qc2 0-0 8. Nf3 Re8 9. Rd1 a6 10. cxd5 exd5 11. Bd3 Nf8 12. Rd2 Ne4 13. Bxe7 Qxe7 14. Bxe4 dxe4 15. Ne5 Bf5 16. f4 Rad8 17. 0-0 f6 18. Nc4 Qf7 19. Nb6 Be6 20. b4 Nd7 21. Nxd7 Rxd7 22. Rc1 Bb3 23. Qb1 f5 24. Ne2 Bc4 25. Nc3 b5 26. Qb2 Rd6 27. Ne2 Qf6 28. Ng3 Kf7 29. Rf2 Rg8 30. Nf1 Ke7 31. Nd2 Bd5 32. Nb3 g5 33. fxg5 Qxg5 34. Qc3 Qh4 35. Nd2 Qh3 36. Nf1 Re6 37. Ng3 Rxg3 38. hxg3 Qxg3 39. Qe1 Rh6 40. Rf4 Qh2+ 41. Kf2 Rg6 42. Qg1 Qg3+ 43. Ke2 Bc4+ 44. Rxc4 bxc4 45. Qf2 Qxf2+ 46. Kxf2 Ke6 47. Rh4 c3 48. Rxh7 Kd5 49. Rh5 Kc4 50. Rxf5 Kd3 51. Rc5 Kd2 0-1

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.18"]
[Round "11"]
[White "Betbeder Matibet, Louis"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "D05"]
[PlyCount "56"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "France"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "FRA"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. Nf3 b6 3. Nbd2 Bb7 4. e3 e6 5. Bd3 d5 6. 0-0 Bd6 7. c4 0-0 8. cxd5 exd5 9. b3 Nbd7 10. Bb2 Qe7 11. Rc1 a6 12. Rc2 Ne4 13. Qa1 Rfe8 14. Rfc1 Nf8 15. Bxe4 dxe4 16. Ne5 Bxe5 17. dxe5 Ne6 18. Nf1 Rad8 19. Rd1 Rd3 20. Qc1 Red8 21. Rcd2 Qg5 22. Qc2 Qg6 23. Ng3 h5 24. f4 h4 25. f5 Qg5 26. fxe6 Qxe3+ 27. Kh1 Rxd2 28. exf7+ Kf8 0-1

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.18"]
[Round "10"]
[White "Gilg, Karl"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "A47"]
[PlyCount "80"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Czechoslovakia"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "CSR"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. dxc5 bxc5 6. 0-0 g6 7. c4 Bg7 8. Nc3 0-0 9. Bf4 d6 10. Qc2 Nc6 11. Rad1 Qc8 12. Qd2 Re8 13. Bg5 Nd4 14. Nxd4 cxd4 15. Bxf6 Bxf6 16. Bxb7 Qxb7 17. Nb5 d5 18. b3 dxc4 19. bxc4 Red8 20. Rb1 Qc6 21. Qd3 a6 22. Na3 e5 23. e4 Rac8 24. Rb3 Be7 25. Rc1 Qa4 26. Rc2 Rc7 27. Nb1 Rdc8 28. Nd2 Bb4 29. Nb1 Bf8 30. Nd2 Bb4 31. Nb1 a5 32. Kg2 Qc6 33. Kf1 Qe6 34. Na3 Bf8 35. Kg2 a4 36. Rb5 Bxa3 37. Qxa3 Rxc4 38. Rxc4 Qxc4 39. Rxe5 d3 40. Qd6 Qc2 1/2-1/2

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.16"]
[Round "7"]
[White "Zimmermann, Otto"]
[Black "Cruusberg, Axel"]
[Result "1-0"]
[ECO "D51"]
[PlyCount "53"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Denmark"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "DEN"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. a3 Be7 7. Nf3 Ne4 8. Bxe7 Qxe7 9. Nxe4 dxe4 10. Nd2 f5 11. c5 0-0 12. Nc4 Kh8 13. Nd6 e5 14. Be2 exd4 15. Qxd4 Rf6 16. 0-0-0 Nf8 17. g4 Ng6 18. g5 Rf8 19. h4 Qc7 20. h5 Ne7 21. h6 Nd5 22. g6 Nf6 23. Rdg1 Be6 24. gxh7 Ng4 25. Nxf5 Bxf5 26. Bxg4 Bxh7 27. hxg7+ 1-0

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.15"]
[Round "6"]
[White "Tartakower, Saviely"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "A47"]
[PlyCount "65"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Poland"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "SUI"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 c5 5. dxc5 bxc5 6. 0-0 g6 7. c3 Bg7 8. Qb3 Bd5 9. c4 Bc6 10. Nc3 0-0 11. Re1 d6 12. e4 Nfd7 13. Bf4 a5 14. e5 a4 15. Qc2 dxe5 16. Nxe5 Bxg2 17. Kxg2 a3 18. bxa3 Nxe5 19. Bxe5 Bxe5 20. Rxe5 Rxa3 21. Rd5 Qc8 22. Ne4 Nd7 23. Rad1 Nb6 24. Re5 Qa8 25. Rxe7 Nc8 26. Rc7 Rxa2 27. Qb1 Nb6 28. Kg1 Nxc4 29. Rxc5 Rb2 30. Qd3 Nb6 31. Nf6+ Kh8 32. Rh5 Kg7 33. Rxh7+ 1-0

[Event "Olympiad-04"]
[Site "Prague"]
[Date "1931.07.12"]
[Round "1"]
[White "Zimmermann, Otto"]
[Black "Addicks, Johannes Hermanus"]
[Result "1-0"]
[ECO "D64"]
[PlyCount "55"]
[EventDate "1931.07.12"]
[EventType "team-tourn"]
[EventRounds "19"]
[EventCountry "CSR"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "NED"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 Be7 6. Nf3 0-0 7. Rc1 c6 8. a3 Re8 9. Qc2 e5 10. dxe5 Ng4 11. Bxe7 Qxe7 12. cxd5 Ndxe5 13. Be2 Nxf2 14. 0-0 Nfg4 15. Qd2 Qd6 16. Nxe5 Rxe5 17. Bxg4 Bxg4 18. Qd4 Bh5 19. dxc6 Qxd4 20. exd4 Ra5 21. cxb7 Rb8 22. Nb5 Bg4 23. Nd6 Rd5 24. Rc8+ Bxc8 25. bxc8Q+ Rxc8 26. Nxc8 Rd7 27. d5 Rxd5 28. Ne7+ 1-0

[Event "SUI-ch35 Meister"]
[Site "Winterthur"]
[Date "1931.04.18"]
[Round "9.1"]
[White "Naegeli, Oskar"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "E14"]
[PlyCount "72"]
[EventDate "1931.04.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. c4 e6 4. e3 Bb7 5. Bd3 c5 6. Nc3 Be7 7. 0-0 0-0 8. Qe2 d5 9. Rd1 Nc6 10. b3 cxd4 11. Nxd4 Nxd4 12. exd4 Bb4 13. Bb2 Rc8 14. Rac1 Qe7 15. Nb5 a6 16. Nc3 dxc4 17. bxc4 Ba3 18. Rb1 Bxb2 19. Rxb2 b5 20. c5 Rfd8 21. a4 g6 22. axb5 Rxd4 23. c6 Ba8 24. Qe3 Rdd8 25. bxa6 Rxc6 26. Be2 Rxd1+ 27. Nxd1 Rc8 28. a7 Nd5 29. Qd4 e5 30. Qa4 Nf4 31. Bf1 Kg7 32. Rb8 Qc5 33. Rxc8 Qxc8 34. Qb5 Qf5 35. Ne3 Qe4 36. Qc4 Nh3+ 0-1

[Event "SUI-ch35 Meister"]
[Site "Winterthur"]
[Date "1931.04.17"]
[Round "8.4"]
[White "Zimmermann, Otto"]
[Black "Grigorieff, Wladimir W"]
[Result "0-1"]
[ECO "D61"]
[PlyCount "72"]
[EventDate "1931.04.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 c6 5. e3 Nbd7 6. a3 Be7 7. Qc2 0-0 8. Nf3 dxc4 9. Bxc4 Nd5 10. Ne4 Qa5+ 11. Ke2 Bxg5 12. Nexg5 N5f6 13. h4 c5 14. Bd3 h6 15. Ne5 Nxe5 16. dxe5 Nd5 17. Bh7+ Kh8 18. Be4 f5 19. exf6 Nxf6 20. Kf1 Bd7 21. Kg1 Qb6 22. Bd3 Be8 23. Bc4 Bf7 24. Nxf7+ Rxf7 25. Rd1 Raf8 26. f3 Qc6 27. Qg6 b5 28. Bd3 c4 29. Bc2 Rd7 30. Kh2 Rfd8 31. Kh3 Rxd1 32. Rxd1 Rxd1 33. Bxd1 Qc5 34. Qg3 e5 35. f4 e4 36. Be2 a5 0-1

[Event "SUI-ch35 Meister"]
[Site "Winterthur"]
[Date "1931.04.15"]
[Round "5.1"]
[White "Zimmermann, Otto"]
[Black "Voellmy, Erwin"]
[Result "1-0"]
[ECO "D12"]
[PlyCount "111"]
[EventDate "1931.04.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Bd3 Bxd3 7. Qxd3 Bb4 8. 0-0 0-0 9. Ne2 Bd6 10. Qb3 Qb6 11. c5 Qxb3 12. axb3 Bc7 13. Nc3 Nbd7 14. b4 a6 15. Nd2 e5 16. Nb3 Rfe8 17. Bd2 exd4 18. Nxd4 Rad8 19. Nce2 Ne4 20. Rfd1 Ne5 21. Be1 Rd7 22. h3 Ng6 23. Bc3 Be5 24. Nf3 Bc7 25. Kf1 h6 26. Nc1 f5 27. g3 Rf7 28. Kg2 Nf8 29. Ne2 Nd7 30. Ned4 Ne5 31. Nxe5 Bxe5 32. Ne2 Bc7 33. Bd4 Be5 34. Bxe5 Rxe5 35. Nd4 Ree7 36. h4 g6 37. h5 Rf6 38. hxg6 Rg7 39. Ne2 Rfxg6 40. Rh1 Kh7 41. Nf4 Rg4 42. Rh3 d4 43. Ne6 dxe3 44. Nxg7 Rxg7 45. Rah1 exf2 46. Rxh6+ Kg8 47. Rh8+ Kf7 48. R1h7 Nxg3 49. Kxf2 Ne4+ 50. Ke3 a5 51. bxa5 Nxc5 52. Rxg7+ Kxg7 53. Rb8 Kf6 54. b4 Ne6 55. Rxb7 Ke5 56. Re7 1-0

[Event "SUI-ch35 Meister"]
[Site "Winterthur"]
[Date "1931.04.14"]
[Round "4.3"]
[White "Nimzowitsch, Aron"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E32"]
[PlyCount "61"]
[EventDate "1931.04.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nc6 5. e3 0-0 6. Bd3 d6 7. Nge2 e5 8. 0-0 Bxc3 9. Qxc3 Re8 10. d5 Ne7 11. Ng3 Ng6 12. b3 Nd7 13. f4 exf4 14. Nh5 Re5 15. Nxg7 fxe3 16. Nf5 Nf6 17. Nxe3 Qe7 18. Nc2 Ne4 19. Bxe4 Rxe4 20. Bb2 Qe5 21. Qd3 Qe8 22. Bf6 Bd7 23. Rf2 Nf4 24. Qd2 Ng6 25. Raf1 Qf8 26. Nd4 a6 27. Qd3 Rae8 28. Ne6 R4xe6 29. dxe6 Rxe6 30. Qd2 Bc6 31. h4 1-0

[Event "SUI-ch35 Meister"]
[Site "Winterthur"]
[Date "1931.04.13"]
[Round "2.2"]
[White "Johner, Hans"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "E22"]
[PlyCount "93"]
[EventDate "1931.04.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 Nc6 5. Nf3 Ne4 6. g3 Qe7 7. Bg2 f5 8. 0-0 Bxc3 9. bxc3 0-0 10. Nd2 Nxd2 11. Bxd2 b6 12. Bxc6 dxc6 13. Bf4 c5 14. Be5 Bb7 15. Qc2 Rac8 16. Rad1 cxd4 17. cxd4 c5 18. Qa4 Bc6 19. Qa3 Rfd8 20. dxc5 bxc5 21. Qb3 Kf7 22. Rxd8 Rxd8 23. Rd1 Rd7 24. Rxd7 Qxd7 25. Qd3 Qb7 26. f3 g6 27. Kf2 Qd7 28. Qe3 Qe7 29. h4 Ke8 30. Qf4 Kd7 31. Bb8 e5 32. Bxe5 Ke6 33. Bb8 a6 34. Qe5+ Kf7 35. Qh8 h5 36. Be5 Be8 37. Bc3 Ke6 38. Qe5+ Kd7 39. Qd5+ Qd6 40. Be5 Qxd5 41. cxd5 Ke7 42. e4 fxe4 43. fxe4 Bb5 44. Ke3 Bc4 45. a3 Bf1 46. Kf4 Bg2 47. Bb8 1-0

[Event "SUI-ch35 Meister"]
[Site "Winterthur"]
[Date "1931.04.13"]
[Round "3.2"]
[White "Zimmermann, Otto"]
[Black "Gygli, Fritz"]
[Result "1/2-1/2"]
[ECO "D61"]
[PlyCount "64"]
[EventDate "1931.04.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Nbd7 5. e3 c6 6. a3 Be7 7. Nf3 0-0 8. Qc2 Re8 9. Rd1 Nh5 10. h4 f5 11. Bd3 Nhf6 12. cxd5 Nxd5 13. g4 Nxc3 14. bxc3 g6 15. gxf5 gxf5 16. Rg1 Kh8 17. Bc4 Bf6 18. e4 Nb6 19. Ne5 Qe7 20. Bb3 Bd7 21. Qe2 Rf8 22. exf5 exf5 23. Bh6 Nd5 24. Bxf8 Rxf8 25. Bxd5 cxd5 26. Rb1 Be8 27. h5 Qxa3 28. Qd3 Bxh5 29. Rh1 Be8 30. Qxf5 Bh4 31. Nf7+ Bxf7 32. Rxh4 Re8+ 1/2-1/2

[Event "SUI-ch35 Meister"]
[Site "Winterthur"]
[Date "1931.04.12"]
[Round "1.3"]
[White "Zimmermann, Otto"]
[Black "Henneberger, Walter"]
[Result "1-0"]
[ECO "E22"]
[PlyCount "55"]
[EventDate "1931.04.12"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 Nc6 5. Nf3 Ne4 6. e3 Nxc3 7. bxc3 Be7 8. Bd3 b6 9. Qb5 Bb7 10. 0-0 Na5 11. Qh5 d6 12. e4 g6 13. Qh6 Bf8 14. Qe3 Qd7 15. Nd2 0-0-0 16. Nb3 Qa4 17. Nxa5 Qxa5 18. a4 Bg7 19. Be2 Rhe8 20. Ba3 c5 21. Rfb1 cxd4 22. cxd4 Qxa4 23. Bb2 Qc2 24. Bd3 Qb3 25. Ra3 Qb4 26. Bc1 Bxd4 27. Rxb4 Bxe3 28. Bxe3 1-0

[Event "Nimzowitsch sim"]
[Site "Bern"]
[Date "1931.02.22"]
[Round "4"]
[White "Zimmermann, Otto"]
[Black "Nimzowitsch, Aron"]
[Result "1/2-1/2"]
[ECO "E23"]
[PlyCount "44"]
[EventDate "1931.02.??"]
[EventType "match"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 c5 5. dxc5 Nc6 6. Nf3 Ne4 7. Bd2 Nxc5 8. Qc2 0-0 9. a3 Bxc3 10. Bxc3 a5 11. Rd1 Qe7 12. e3 a4 13. Be2 e5 14. Bb4 d6 15. Bxc5 dxc5 16. 0-0 Bg4 17. Rfe1 Bxf3 18. Bxf3 f5 19. Bd5+ Kh8 20. Bxc6 bxc6 21. Rd2 e4 22. Red1 Qe5 1/2-1/2

[Event "Nimzowitsch sim"]
[Site "Bern"]
[Date "1931.02.??"]
[Round "3"]
[White "Nimzowitsch, Aron"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "B11"]
[PlyCount "81"]
[EventDate "1931.02.??"]
[EventType "match"]
[EventCountry "SUI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. d4 e6 5. Bd3 Nf6 6. 0-0 Be7 7. Be3 dxe4 8. Nxe4 Nbd7 9. h3 Bh5 10. Ng3 Bg6 11. Bxg6 hxg6 12. c4 Qc7 13. Qa4 Bd6 14. Ng5 Bf4 15. Ne2 Bxe3 16. fxe3 Rh5 17. Nf3 g5 18. c5 Ke7 19. Nh2 Rah8 20. Qd1 Nd5 21. e4 Ne3 22. Qd2 Nxf1 23. Rxf1 Nf6 24. e5 Nd5 25. Ng3 Nf4 26. Nxh5 Rxh5 27. Qd1 Rh6 28. Qg4 Ke8 29. Nf3 f6 30. h4 Qd7 31. exf6 gxf6 32. Re1 Qh7 33. b4 a6 34. a4 Rh5 35. b5 axb5 36. axb5 cxb5 37. d5 f5 38. Qg3 Qc7 39. Qf2 gxh4 40. Qd4 Nh3+ 41. Kf1 1-0

[Event "Zuerich games"]
[Site "Zuerich"]
[Date "1929.05.26"]
[Round "?"]
[White "Gruenfeld, Ernst"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "E11"]
[PlyCount "86"]
[EventDate "1929.05.??"]
[EventType "game"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Bxd2+ 5. Nbxd2 d6 6. g3 0-0 7. Bg2 Nc6 8. 0-0 e5 9. d5 Ne7 10. e4 Nd7 11. Nh4 a5 12. Qc2 Nc5 13. Nb3 Nxb3 14. axb3 c5 15. Nf5 Nxf5 16. exf5 Bd7 17. Be4 Re8 18. Rae1 b5 19. Ra1 f6 20. Kh1 Qb6 21. g4 Reb8 22. Ra2 a4 23. Rfa1 axb3 24. Qxb3 Rxa2 25. Rxa2 bxc4 26. Qxc4 Qb4 27. Qxb4 Rxb4 28. f3 Ra4 29. Rxa4 Bxa4 30. Kg2 Kf7 31. Kf2 Ke7 32. Ke3 Kd7 33. Kd3 Kc7 34. Kc4 Kb6 35. Kc3 Ka5 36. Kc4 Bb5+ 37. Kc3 Bf1 38. b3 Kb5 39. Bc2 c4 40. b4 Be2 41. Be4 Bd3 42. h3 h6 43. h4 Ka4 0-1

[Event "Berlin"]
[Site "Berlin"]
[Date "1928.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Leipig"]
[Result "1/2-1/2"]
[ECO "A52"]
[PlyCount "27"]
[EventDate "1928.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 d6 5. Be2 Nxe5 6. f4 Nec6 7. Nf3 Be7 8. Nc3 0-0 9. 0-0 Nd7 10. Be3 Nf6 11. Nd4 Nxd4 12. Bxd4 Re8 13. Bd3 Bf8 14. Kh1 1/2-1/2

[Event "Olympiad-01"]
[Site "London"]
[Date "1927.07.29"]
[Round "15"]
[White "Lokvenc, Josef"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "D11"]
[PlyCount "72"]
[EventDate "1927.07.18"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "ENG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Austria"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "AUT"]
[BlackTeamCountry "SUI"]

1. Nf3 Nf6 2. c4 c6 3. g3 d5 4. b3 Bf5 5. Bg2 e6 6. Bb2 Nbd7 7. 0-0 Bd6 8. d4 h6 9. Nbd2 0-0 10. Ne5 Qe7 11. a3 Rfd8 12. f3 Nxe5 13. dxe5 Bc5+ 14. Kh1 Nd7 15. f4 dxc4 16. e4 Bh7 17. Qe2 Nb6 18. Nxc4 Nxc4 19. Qxc4 Rd2 20. Bc1 b5 21. Qc3 Rxg2 22. Kxg2 Bxe4+ 23. Kh3 Rd8 24. Be3 Bf5+ 25. Kg2 Bxe3 26. Qxe3 Rd3 27. Qe2 Rxb3 28. Rfd1 c5 29. Ra2 c4 30. Rad2 Qxa3 31. Ra2 Qc5 32. Rd8+ Kh7 33. g4 Re3 34. Qd2 Be4+ 35. Kf1 Rf3+ 36. Ke1 Qg1+ 0-1

[Event "Olympiad-01"]
[Site "London"]
[Date "1927.07.28"]
[Round "14"]
[White "Muffang, Andre"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "A22"]
[PlyCount "43"]
[EventDate "1927.07.18"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "ENG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "France"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "FRA"]
[BlackTeamCountry "SUI"]

1. Nf3 Nf6 2. c4 d6 3. g3 Nbd7 4. Bg2 e5 5. d3 Be7 6. 0-0 c6 7. Nc3 0-0 8. e4 Re8 9. Qe2 Bf8 10. Be3 b6 11. Nd2 Bb7 12. f4 Qc7 13. f5 d5 14. cxd5 cxd5 15. exd5 Bb4 16. Nde4 Nxd5 17. Nxd5 Bxd5 18. f6 Bxe4 19. Bxe4 Nxf6 20. Rxf6 gxf6 21. Bxa8 Rxa8 22. Qg4+ 1-0

[Event "Olympiad-01"]
[Site "London"]
[Date "1927.07.27"]
[Round "12"]
[White "Nagy, Geza1111"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "E16"]
[PlyCount "58"]
[EventDate "1927.07.18"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "ENG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Hungary"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "HUN"]
[BlackTeamCountry "SUI"]

1. Nf3 Nf6 2. d4 b6 3. c4 Bb7 4. g3 e6 5. Bg2 Bb4+ 6. Kf1 Be7 7. Nc3 d6 8. b3 Nbd7 9. Bb2 0-0 10. Qc2 c5 11. Rd1 Qc7 12. e4 a6 13. e5 dxe5 14. Nxe5 cxd4 15. Nxd7 Qxd7 16. Ne4 e5 17. h3 Nxe4 18. Bxe4 f5 19. Bxb7 Qxb7 20. Kg1 f4 21. g4 Rad8 22. Qe2 Bf6 23. g5 f3 24. Qe1 Qf7 25. h4 Qe6 26. Qe4 Be7 27. Rxd4 Rxd4 28. Bxd4 Rd8 29. Qxe5 Qg4+ 0-1

[Event "Olympiad-01"]
[Site "London"]
[Date "1927.07.26"]
[Round "11"]
[White "Zimmermann, Otto"]
[Black "Kroone, Gerard"]
[Result "1/2-1/2"]
[ECO "D13"]
[PlyCount "135"]
[EventDate "1927.07.18"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "ENG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "NED"]

1. Nf3 d5 2. c4 c6 3. d4 Nf6 4. e3 Bf5 5. cxd5 cxd5 6. Qb3 Qb6 7. Bb5+ Nc6 8. Nc3 e6 9. Ne5 Rc8 10. a4 Bd6 11. a5 Qc7 12. a6 0-0 13. axb7 Qxb7 14. Qa4 Nb4 15. 0-0 a5 16. Qd1 Bxe5 17. dxe5 Ng4 18. Rxa5 Nxe5 19. Qa4 Qe7 20. e4 dxe4 21. Ra7 Qd6 22. Bf4 Nbd3 23. Nxe4 Bxe4 24. Qxe4 Nxf4 25. Qxf4 Qb6 26. Qa4 Rc5 27. Ra5 Nc6 28. Ra6 Qxb5 29. Qxb5 Rxb5 30. Rxc6 Rxb2 31. g3 g6 32. Rfc1 Rd8 33. R1c3 Rd5 34. Rf3 Rbb5 35. g4 Rb7 36. Kg2 Rg5 37. h3 h5 38. Rf4 Re7 39. Kg3 Kg7 40. Kh4 Rd5 41. g5 e5 42. Re4 Rd3 43. Rf6 Kf8 44. Re2 Rc7 45. f3 Rc4+ 46. Kg3 e4 47. Kg2 e3 48. f4 Rd2 49. Kf3 Rxe2 50. Kxe2 Rc2+ 51. Kxe3 Rc3+ 52. Kf2 Rxh3 53. f5 Kg7 54. fxg6 fxg6 55. Ra6 Rd3 56. Ra7+ Kf8 57. Ra5 Kf7 58. Ke2 Rc3 59. Re5 Rg3 60. Kf2 Ra3 61. Kg2 Ra6 62. Kf3 Re6 63. Ra5 Re7 64. Kf4 Kg7 65. Rb5 Rf7+ 66. Ke4 h4 67. Ra5 Rf5 68. Ra7+ 1/2-1/2

[Event "Olympiad-01"]
[Site "London"]
[Date "1927.07.22"]
[Round "7"]
[White "Zimmermann, Otto"]
[Black "Jacobsen, Ernst"]
[Result "1-0"]
[ECO "D46"]
[PlyCount "113"]
[EventDate "1927.07.18"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "ENG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Sweden"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "SWE"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 c6 5. e3 Bd6 6. Bd3 Nbd7 7. e4 dxe4 8. Nxe4 Nxe4 9. Bxe4 Nf6 10. Bd3 0-0 11. 0-0 Qc7 12. Bg5 Nd7 13. Qe2 Re8 14. Qe4 Nf8 15. c5 Be7 16. Bxe7 Qxe7 17. Ne5 Rd8 18. Nc4 Bd7 19. Nd6 Be8 20. Rae1 Rd7 21. Re3 Qg5 22. f4 Qd5 23. Qxd5 cxd5 24. Nxe8 Rxe8 25. Bb5 Rc8 26. Bxd7 Nxd7 27. b4 Nf6 28. b5 Ne4 29. Rc1 Nd6 30. a4 Kf8 31. Rb3 Nc4 32. Ra1 b6 33. c6 Ke7 34. Rh3 h6 35. Ra2 Kf6 36. g4 Nd6 37. Rf3 g6 38. Rh3 Kg7 39. Rb3 Nc4 40. Kf2 Kf6 41. Rh3 Kg7 42. Re2 Nd6 43. Kg2 Rc7 44. Rf3 Rc8 45. h4 Rc7 46. Rh3 Kf6 47. h5 gxh5 48. Rxh5 Kg6 49. Rh1 Rc8 50. Kf3 Rh8 51. Reh2 Rh7 52. Ke2 Rh8 53. Kd3 Rh7 54. Kc3 Rh8 55. Kb4 Nc4 56. Rh5 Nd6 57. g5 1-0

[Event "Olympiad-01"]
[Site "London"]
[Date "1927.07.20"]
[Round "4"]
[White "Hromadka, Karel"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "C29"]
[PlyCount "80"]
[EventDate "1927.07.18"]
[EventType "team-tourn"]
[EventRounds "15"]
[EventCountry "ENG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Czechoslovakia"]
[BlackTeam "Switzerland"]
[WhiteTeamCountry "CSR"]
[BlackTeamCountry "SUI"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Be7 6. d3 Nxc3 7. bxc3 0-0 8. Be2 Nd7 9. 0-0 f6 10. d4 fxe5 11. dxe5 Nc5 12. Be3 c6 13. c4 dxc4 14. Bxc4+ Be6 15. Qe2 Bxc4 16. Qxc4+ Qd5 17. Qxd5+ cxd5 18. Rad1 Rad8 19. Nd4 Rxf1+ 20. Kxf1 a6 21. Ke2 g6 22. Rb1 Re8 23. Nf3 b5 24. Bxc5 Bxc5 25. Rd1 Rd8 26. Kd3 Rc8 27. c3 Bb6 28. Re1 Ba5 29. Rc1 Bb6 30. Rc2 Kf8 31. Ng5 Kg8 32. Re2 Re8 33. e6 Bd8 34. Re5 Bxg5 35. Rxg5 Rxe6 36. Rxd5 Kf7 37. a4 bxa4 38. Ra5 Rd6+ 39. Ke3 Rc6 40. Kd3 Rd6+ 1/2-1/2

[Event "Alekhine sim"]
[Site "Basel"]
[Date "1925.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Alekhine, Alexander"]
[Result "0-1"]
[ECO "D06"]
[PlyCount "50"]
[EventDate "1925.??.??"]
[EventType "simul"]
[EventRounds "1"]
[EventCountry "SUI"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e5 6. Nf3 exd4 7. Qxd4 Qxd4 8. Nxd4 Bc5 9. Ndb5 Na6 10. Bf4 Bb6 11. Be2 0-0 12. 0-0 Bg4 13. Bxg4 Nxg4 14. Nd5 c6 15. Nxb6 axb6 16. Nd6 Nc5 17. f3 Nf6 18. Rfd1 Rfd8 19. Be3 Kf8 20. b4 Na4 21. Nxb7 Rxd1+ 22. Rxd1 Ke7 23. Nd6 Nc3 24. Nf5+ Kf8 25. Rc1 Ne2+ 0-1

[Event "Amateur Olympiad Final B"]
[Site "Paris"]
[Date "1924.07.19"]
[Round "8"]
[White "Schulz, Jan Sr"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "C90"]
[PlyCount "81"]
[EventDate "1924.07.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "FRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Czechoslovakia II"]
[BlackTeam "Switzerland II"]
[WhiteTeamCountry "CSR"]
[BlackTeamCountry "SUI"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5 10. d4 Qc7 11. a4 b4 12. cxb4 cxb4 13. b3 Bg4 14. Bb2 Bxf3 15. gxf3 0-0 16. Nd2 Nh5 17. Nf1 Rfc8 18. Rc1 Bg5 19. Ne3 Bf4 20. Nd5 Qd8 21. Nxf4 Nxf4 22. Kh1 Qf6 23. Rg1 Nc6 24. Bd3 Nh3 25. Rg2 Qf4 26. Rc4 Nxd4 27. Rxd4 exd4 28. Bc4 Rc5 29. Bxd4 Rg5 30. Be3 Rxg2 31. Bxf4 Nxf2+ 32. Kxg2 Nxd1 33. a5 Rd8 34. Bxa6 Ra8 35. Be2 Nc3 36. Bc4 Rxa5 37. Bxd6 Ra2+ 38. Kg3 Ne2+ 39. Kg4 Nd4 40. h4 Rg2+ 41. Kh3 1/2-1/2

[Event "Amateur Olympiad Final B"]
[Site "Paris"]
[Date "1924.07.18"]
[Round "6"]
[White "Skalicka, Carlos"]
[Black "Zimmermann, Otto"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "79"]
[EventDate "1924.07.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "FRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Czechoslovakia IV"]
[BlackTeam "Switzerland II"]
[WhiteTeamCountry "CSR"]
[BlackTeamCountry "SUI"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 h6 6. Be3 Be7 7. Qd2 c6 8. dxe5 dxe5 9. 0-0 Bb4 10. Bd3 Qe7 11. a3 Bc5 12. Rad1 0-0 13. Ne2 Ng4 14. Bxc5 Nxc5 15. h3 Nf6 16. Ng3 Nxd3 17. Qxd3 Ne8 18. Qc3 f6 19. Nh4 Qf7 20. Nhf5 Bxf5 21. Nxf5 Nc7 22. Qg3 Kh7 23. Nd6 Qe7 24. Nxb7 Nb5 25. Na5 Nd4 26. Qd3 Qc5 27. Nb3 Qxc2 28. Nxd4 Qxd3 29. Rxd3 exd4 30. Rxd4 Rfb8 31. Rc1 Rxb2 32. Rxc6 Rab8 33. Rc7 R8b7 34. Rdd7 Rxc7 35. Rxc7 Rb1+ 36. Kh2 Rb2 37. f3 h5 38. h4 a6 39. Rc6 a5 40. Rc5 1-0

[Event "Amateur Olympiad Final B"]
[Site "Paris"]
[Date "1924.07.18"]
[Round "7"]
[White "Zimmermann, Otto"]
[Black "Handasyde, Harris Kirkland"]
[Result "1-0"]
[ECO "C83"]
[PlyCount "43"]
[EventDate "1924.07.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "FRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Switzerland II"]
[BlackTeam "Great Britain"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "GBR"]

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. Be3 Na5 11. Nd4 0-0 12. Nd2 c5 13. Nxe6 fxe6 14. Nxe4 dxe4 15. Bxe6+ Kh8 16. Bd5 Ra7 17. Bxe4 Rd7 18. Qh5 g6 19. Bxg6 Bh4 20. Rad1 Bxf2+ 21. Bxf2 Rxf2 22. Kxf2 1-0

[Event "Amateur Olympiad Final B"]
[Site "Paris"]
[Date "1924.07.17"]
[Round "5"]
[White "Zimmermann, Otto"]
[Black "Romi, Massimiliano"]
[Result "1-0"]
[ECO "D45"]
[PlyCount "85"]
[EventDate "1924.07.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "FRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Switzerland II"]
[BlackTeam "Italy III"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "ITA"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nc3 Bd6 5. e3 Nf6 6. Qc2 Nbd7 7. cxd5 exd5 8. Bd3 0-0 9. 0-0 Re8 10. Rd1 Nf8 11. h3 Bc7 12. b4 a6 13. a4 Be6 14. a5 Qd7 15. Ng5 h6 16. Nxe6 Nxe6 17. f4 Qd6 18. Ba3 Nxd4 19. exd4 Qxf4 20. Qf2 Qh2+ 21. Kf1 Nh5 22. Ne2 Re6 23. Bf5 Rae8 24. Bxe6 Rxe6 25. Rd3 Rf6 26. Rf3 Qh1+ 27. Ng1 Bg3 28. Qe3 Nf4 29. Ra2 Re6 30. Rxg3 Rxe3 31. Rxe3 Ne6 32. Rf2 g5 33. Ref3 Nxd4 34. Rxf7 Qh2 35. Bb2 Ne6 36. R7f6 Nf4 37. Be5 Qg3 38. Nf3 Kh7 39. h4 Qg4 40. hxg5 hxg5 41. Nxg5+ Qxg5 42. Rf7+ Kg8 43. Rg7+ 1-0

[Event "Amateur Olympiad Final B"]
[Site "Paris"]
[Date "1924.07.16"]
[Round "3"]
[White "Zimmermann, Otto"]
[Black "Rosselli del Turco, Stefano"]
[Result "1-0"]
[ECO "C90"]
[PlyCount "77"]
[EventDate "1924.07.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "FRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Switzerland II"]
[BlackTeam "Italy II"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "ITA"]

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. d3 Na5 10. Bc2 c5 11. Nbd2 Qc7 12. Nf1 Nc6 13. Ne3 h6 14. d4 Rd8 15. Nd5 Qb7 16. Nxe7+ Qxe7 17. d5 Na7 18. h3 Nh7 19. Kh2 Rf8 20. g4 g5 21. Rg1 f6 22. Be3 a5 23. a4 Bd7 24. axb5 Nxb5 25. Nd2 Ra6 26. Nc4 Rfa8 27. Ba4 Qd8 28. Ra2 Nf8 29. Qb3 Rb8 30. Qc2 Na7 31. Rga1 Bb5 32. Bxb5 Rxb5 33. Qe2 Ng6 34. Na3 Rbb6 35. b4 axb4 36. cxb4 Nf4 37. Qf1 Ra4 38. bxc5 dxc5 39. Nc4 1-0

[Event "Amateur Olympiad Final B"]
[Site "Paris"]
[Date "1924.07.15"]
[Round "1"]
[White "Zimmermann, Otto"]
[Black "Gudju, Ion"]
[Result "1/2-1/2"]
[ECO "C88"]
[PlyCount "110"]
[EventDate "1924.07.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "FRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Switzerland II"]
[BlackTeam "Romania II"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "ROU"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. 0-0 Be7 7. Re1 0-0 8. Nbd2 b5 9. Bb3 Na5 10. Nf1 Nxb3 11. axb3 h6 12. d4 exd4 13. Nxd4 Bd7 14. Ng3 Re8 15. Bf4 d5 16. e5 Nh7 17. e6 fxe6 18. Nxe6 Bxe6 19. Rxe6 Rf8 20. Qg4 Nf6 21. Qg6 Qe8 22. Qxe8 Raxe8 23. Bxc7 Bc5 24. Raxa6 Ng4 25. Nh1 Nxf2 26. Nxf2 Rxf2 27. Rxe8+ Rf8+ 28. Kh1 Rxe8 29. h3 Re2 30. c3 Rxb2 31. b4 Bf2 32. Rd6 d4 33. cxd4 Rxb4 34. Rd8+ Kf7 35. Be5 Ke7 36. Rd6 Rb1+ 37. Kh2 b4 38. Rb6 b3 39. Bxg7 h5 40. g4 Rb2 41. Kh1 h4 42. Bf6+ Kf7 43. Be5 Rd2 44. Rxb3 Bxd4 45. Bf4 Re2 46. Bg5 Bf2 47. Bf4 Rc2 48. Rd3 Ra2 49. Rd7+ Kg6 50. Be5 Be3 51. Rd6+ Kg5 52. Bg7 Kf4 53. Bh6+ Ke5 54. Rc6 Bxh6 55. Rxh6 Kf4 1/2-1/2

[Event "Amateur Olympiad Preliminaries-5"]
[Site "Paris"]
[Date "1924.07.13"]
[Round "4"]
[White "Zimmermann, Otto"]
[Black "Vanek, Karel"]
[Result "1-0"]
[ECO "C84"]
[PlyCount "93"]
[EventDate "1924.07.12"]
[EventType "team-tourn"]
[EventRounds "5"]
[EventCountry "FRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Switzerland II"]
[BlackTeam "Czechoslovakia III"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "CSR"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 d6 6. Re1 Bd7 7. c3 Be7 8. d3 0-0 9. Nbd2 Ne8 10. Nf1 b5 11. Bc2 Bf6 12. Ne3 Ne7 13. a4 c5 14. d4 Be6 15. Qd3 c4 16. Qd1 Nc7 17. Nf5 g6 18. Nh6+ Kh8 19. axb5 axb5 20. Rxa8 Nxa8 21. dxe5 dxe5 22. Qxd8 Rxd8 23. Ng5 Kg7 24. Nxe6+ fxe6 25. Ng4 Nc6 26. Nxf6 Kxf6 27. h4 Rd7 28. Be3 Nc7 29. Ra1 Kf7 30. Kf1 Rd8 31. Bb6 Rd2 32. Bd1 Ne8 33. Be3 Rd7 34. Be2 Nf6 35. f3 Nh5 36. Ra6 Rc7 37. Rb6 Ng3+ 38. Kf2 Nxe2 39. Kxe2 b4 40. cxb4 Nd4+ 41. Kd2 Ke7 42. Rb8 Kd7 43. b5 Rc5 44. Kc3 Kc7 45. Kb4 Kxb8 46. Kxc5 Nc2 47. Bf2 1-0

[Event "Match/Nation SUI-South Germany"]
[Site "Bern"]
[Date "1923.07.28"]
[Round "2.4"]
[White "Zimmermann, Otto"]
[Black "Maier"]
[Result "1/2-1/2"]
[ECO "D78"]
[PlyCount "81"]
[EventDate "1923.07.??"]
[EventType "team-match"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 g6 4. d4 Bg7 5. 0-0 0-0 6. c4 c6 7. Nc3 dxc4 8. Bf4 Nbd7 9. Rc1 Nb6 10. Na4 Nfd5 11. Bd2 Nxa4 12. Qxa4 Nb6 13. Qa3 Bg4 14. Rfd1 Bxf3 15. Bxf3 Re8 16. Bf4 e5 17. dxe5 Qe7 18. Qxe7 Rxe7 19. e3 Bxe5 20. Bxe5 Rxe5 21. Be2 Rd5 22. Kf1 Rad8 23. Rxd5 cxd5 24. Rd1 f5 25. Ke1 Kf7 26. Rd4 Ke6 27. Kd2 Rd6 28. Bd1 Nd7 29. Kc3 Nc5 30. Bc2 a5 31. f4 b5 32. a3 Rb6 33. b4 Na4+ 34. Bxa4 bxa4 35. Rd2 axb4+ 36. axb4 Kd6 37. Ra2 Ra6 38. b5 Ra8 39. Kb4 a3 40. Rxa3 Rxa3 41. Kxa3 1/2-1/2

[Event "Match/Nation SUI-South Germany"]
[Site "Bern"]
[Date "1923.07.27"]
[Round "1.4"]
[White "Maier"]
[Black "Zimmermann, Otto"]
[Result "1/2-1/2"]
[ECO "C24"]
[PlyCount "83"]
[EventDate "1923.07.??"]
[EventType "team-match"]
[EventRounds "2"]
[EventCountry "SUI"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 e5 3. Bc4 c6 4. Nc3 Be7 5. 0-0 Nf6 6. d3 h6 7. Bb3 Nbd7 8. h3 g5 9. Nh2 Nf8 10. d4 Qc7 11. dxe5 dxe5 12. Be3 Ng6 13. Qe2 Nf4 14. Bxf4 gxf4 15. Kh1 Bd6 16. Rad1 Qe7 17. Rd3 Bc7 18. Rfd1 Bd7 19. Nf3 0-0-0 20. Nh4 Rdg8 21. Rxd7 Nxd7 22. Nf5 Qf6 23. Na4 Rd8 24. Re1 Nf8 25. Qc4 Ne6 26. Qb4 Rd7 27. Bxe6 Qxe6 28. Nc5 Bd6 29. Nxd6+ Qxd6 30. Qa5 Qd2 31. Qxa7 Qxe1+ 32. Kh2 Rhd8 33. Qa8+ Kc7 34. Qxb7+ Kd6 35. Nxd7 Rxd7 36. Qb8+ Kc5 37. Qxe5+ Kb6 38. Qb8+ Rb7 39. Qd8+ Ka7 40. Qd4+ Ka8 41. Qa4+ Kb8 42. Qxc6 1/2-1/2

[Event "Kent County Amateur A"]
[Site "Margate"]
[Date "1923.04.??"]
[Round "6"]
[White "Zimmermann, Otto"]
[Black "Colle, Edgard"]
[Result "1-0"]
[ECO "A03"]
[PlyCount "81"]
[EventDate "1923.04.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "ENG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. e3 Nc6 4. Bb5 Nf6 5. Bxc6+ bxc6 6. Qe2 e6 7. d3 Ba6 8. c4 Qc7 9. e4 dxc4 10. dxc4 Rd8 11. Nc3 Be7 12. 0-0 0-0 13. b3 h6 14. e5 Nd5 15. Ne4 f5 16. exf6 Bxf6 17. Nxf6+ Rxf6 18. g3 Qd6 19. Bb2 Rf5 20. Rad1 Re8 21. Rfe1 Qe7 22. Ne5 Nb6 23. Qe3 Bb7 24. Ng6 Qf7 25. Nh4 Rh5 26. Ng2 Qf5 27. Qc3 Re7 28. Rd8+ Kh7 29. Re8 Rf7 30. Nh4 Rxh4 31. gxh4 Qxf4 32. Qd3+ Rf5 33. Qg3 Rf7 34. Qxf4 Rxf4 35. Re7 Rg4+ 36. Kf2 Bc8 37. Rg1 Rxg1 38. Kxg1 Kg6 39. Rxg7+ Kf5 40. Kf2 a5 41. Rc7 1-0

[Event "Match/Nation ITA-SUI (7-5) (5,5-7,5)"]
[Site "Milan"]
[Date "1922.10.16"]
[Round "2.5"]
[White "Zimmermann, Otto"]
[Black "Monticelli, Mario"]
[Result "1-0"]
[ECO "C44"]
[PlyCount "41"]
[EventDate "1922.10.15"]
[EventType "team-match"]
[EventRounds "2"]
[EventCountry "ITA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d3 Bc5 4. Be2 Nge7 5. c3 d5 6. Nbd2 a5 7. h3 Be6 8. Qc2 Ng6 9. g3 f6 10. Nf1 dxe4 11. dxe4 Qe7 12. Ne3 0-0 13. Nf5 Bxf5 14. exf5 e4 15. Nd2 e3 16. fxe3 Qxe3 17. Ne4 Nd4 18. cxd4 Bb4+ 19. Kf1 Qxd4 20. Qc4+ Qxc4 21. Bxc4+ 1-0

[Event "Match/Nation ITA-SUI (7-5) (5,5-7,5)"]
[Site "Milan"]
[Date "1922.10.15"]
[Round "1.5"]
[White "Monticelli, Mario"]
[Black "Zimmermann, Otto"]
[Result "0-1"]
[ECO "B41"]
[PlyCount "76"]
[EventDate "1922.10.15"]
[EventType "team-match"]
[EventRounds "2"]
[EventCountry "ITA"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Be3 Nf6 6. Nd2 Qc7 7. Be2 Be7 8. 0-0 d6 9. f4 Nbd7 10. Qe1 b6 11. Bf3 Bb7 12. Qg3 0-0 13. f5 e5 14. N4b3 Rfd8 15. Qf2 d5 16. exd5 Nxd5 17. Ne4 Nxe3 18. Qxe3 Nf6 19. Nxf6+ Bxf6 20. Bxb7 Qxb7 21. c3 h6 22. Rad1 Qc6 23. Nd2 Qa4 24. b3 Qxa2 25. Ne4 Rxd1 26. Nxf6+ gxf6 27. Rxd1 Qxb3 28. Rf1 Kh7 29. Qd3 b5 30. Qd6 Qxc3 31. Qxf6 Qd4+ 32. Kh1 Ra7 33. h3 Qc5 34. Rd1 Qe7 35. Qc6 f6 36. Rd3 e4 37. Rd6 Rc7 38. Qd5 e3 0-1

[Event "corr"]
[Site "corr"]
[Date "1920.??.??"]
[Round "?"]
[White "Zimmermann, Otto"]
[Black "Tuffli, F."]
[Result "0-1"]
[ECO "C28"]
[PlyCount "52"]
[EventDate "1920.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 Nf6 4. d3 Bb4 5. Nf3 d5 6. exd5 Nxd5 7. 0-0 Nxc3 8. bxc3 Bxc3 9. Ng5 Be6 10. Nxe6 fxe6 11. Rb1 Nd4 12. Ba3 b6 13. f4 Qf6 14. Rb3 Nxb3 15. Bb5+ Kd8 16. fxe5 Qxe5 17. Qf3 c6 18. Qxc6 Qd4+ 19. Kh1 Rc8 20. Qb7 Bb4 21. c3 Nc5 22. Qxa7 Qxc3 23. Bc1 Nb7 24. Qxb7 Qc7 25. Qe4 Qc5 26. Ba6 Rf8 0-1

