[Event "Zuerich Seniors op 07th"]
[Site "Zuerich"]
[Date "2009.02.07"]
[Round "?"]
[White "Nievergelt, Jakob"]
[Black "Singeisen, Hermann"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "1934"]
[BlackElo "2073"]
[PlyCount "72"]
[EventDate "2009.01.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d3 d5 2. Nf3 Nf6 3. Bg5 e6 4. g3 Be7 5. Bg2 0-0 6. c3 c5 7. e3 Nbd7 8. Nbd2 Qc7 9. 0-0 h6 10. Bxf6 Nxf6 11. d4 Bd6 12. Rc1 c4 13. Qc2 b5 14. b4 a5 15. a3 Bb7 16. Ne1 e5 17. dxe5 Bxe5 18. Nef3 Nd7 19. Nd4 Bxd4 20. exd4 Nf6 21. Rfe1 Rfe8 22. Kf1 Bc6 23. Nf3 Rxe1+ 24. Rxe1 axb4 25. axb4 Ra3 26. Ne5 Bd7 27. Nxd7 Qxd7 28. f3 Qa7 29. Rb1 g6 30. Bh3 Kg7 31. Ke1 h5 32. Bg2 h4 33. Kf2 Qc7 34. Qc1 Qa7 35. Bh3 Ra2+ 36. Rb2 Qa3 0-1

[Event "Zuerich Seniors op 07th"]
[Site "Zuerich"]
[Date "2009.02.03"]
[Round "7"]
[White "Glur, Erwin"]
[Black "Nievergelt, Jakob"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1886"]
[PlyCount "86"]
[EventDate "2009.01.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 Be7 5. Ne2 0-0 6. 0-0 c5 7. h3 a6 8. Be3 b5 9. Nd2 Bb7 10. f4 Nbd7 11. Ng3 c4 12. Bc2 g6 13. f5 Kh8 14. b3 cxb3 15. Bxb3 Ng8 16. Rf3 Bg5 17. Qe2 Bxe3+ 18. Qxe3 Qh4 19. Raf1 Ngf6 20. Bc2 g5 21. Ne2 g4 22. Rg3 Rg8 23. Qf2 Rg7 24. Re3 Qh6 25. h4 Rc8 26. g3 Rgg8 27. Re1 Rc7 28. Bb3 Qg7 29. Qg2 Rgc8 30. d5 a5 31. a3 Ba6 32. Qf2 Qf8 33. a4 Nc5 34. axb5 Bxb5 35. c4 Bd7 36. Ra1 a4 37. Bd1 Rb8 38. Nc3 Rb2 39. Qe1 Ra7 40. Ndb1 Qb8 41. Na3 Qb6 42. Nab5 Nd3 43. Kf1 Nxe1 0-1

[Event "Zuerich Seniors op 07th"]
[Site "Zuerich"]
[Date "2009.01.29"]
[Round "4"]
[White "Nievergelt, Jakob"]
[Black "Moeller, Albrecht"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "1934"]
[BlackElo "1831"]
[PlyCount "93"]
[EventDate "2009.01.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 d6 5. Nxd4 Nf6 6. 0-0 Be7 7. Nc3 0-0 8. f3 Bd7 9. Be3 a6 10. a4 Re8 11. Qd2 Bf8 12. Nxc6 Bxc6 13. b4 h6 14. b5 axb5 15. axb5 Bd7 16. Rfb1 Be6 17. Bxe6 Rxe6 18. Ne2 Re8 19. c4 g5 20. Ng3 Nd7 21. Nf5 Qf6 22. Bd4 Ne5 23. Qc3 b6 24. Kh1 Qe6 25. Ne3 Bg7 26. Nd5 Qd7 27. Ne3 Qe6 28. Nf5 Bf8 29. Ne3 Bg7 30. Nd5 Qd7 31. Kg1 Rec8 32. Kf2 Kh8 33. Rh1 Rf8 34. Ne3 Qe6 35. Ke2 f6 36. Ra6 Rxa6 37. bxa6 Nc6 38. Nf5 Na5 39. Kd3 Ra8 40. h4 Kg8 41. hxg5 hxg5 42. Nxg7 Kxg7 43. Bxf6+ Kg6 44. Bh8 Qf7 45. f4 gxf4 46. Rh4 Nc6 47. Rg4+ 1/2-1/2

[Event "Zuerich Seniors op 07th"]
[Site "Zuerich"]
[Date "2009.01.26"]
[Round "1"]
[White "Brand, Michel"]
[Black "Nievergelt, Jakob"]
[Result "1/2-1/2"]
[ECO "A39"]
[PlyCount "65"]
[EventDate "2009.01.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 Nf6 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 d6 10. Qd3 Nd7 11. b3 Rb8 12. Bb2 a6 13. Qd2 b5 14. cxb5 axb5 15. Nd5 Bb7 16. Bxg7 Kxg7 17. Rac1 Bxd5 18. Qxd5 b4 19. Rc2 Nc5 20. Rfc1 Rb6 21. Rc4 Qb8 22. Rh4 Rh8 23. Qd2 h6 24. Rcc4 g5 25. Rhd4 e5 26. Rd5 Re8 27. h4 Ne6 28. hxg5 hxg5 29. Bh3 f6 30. Bxe6 Rxe6 31. Ra5 Re7 32. Ra4 Reb7 33. Qc2 1/2-1/2

[Event "Zuerich Seniors op 06th"]
[Site "Zuerich"]
[Date "2008.02.07"]
[Round "8"]
[White "Reutimann, Hans Peter"]
[Black "Nievergelt, Jakob"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1715"]
[BlackElo "1961"]
[PlyCount "46"]
[EventDate "2008.01.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 e6 4. e3 Nbd7 5. Nbd2 c5 6. c3 Be7 7. h3 0-0 8. Bd3 b6 9. Ne5 Nxe5 10. dxe5 Ne8 11. h4 f5 12. Nf3 g6 13. Ng5 h6 14. h5 Bxg5 15. hxg6 Kg7 16. Qh5 Rh8 17. Bg3 Nc7 18. Bh4 Bxh4 19. Rxh4 Qg5 20. g4 Qxh5 21. gxh5 Ba6 22. c4 Rhd8 23. Ke2 Rd7 0-1

[Event "Zuerich Seniors op 06th"]
[Site "Zuerich"]
[Date "2008.01.25"]
[Round "?"]
[White "Bisig, Richard"]
[Black "Nievergelt, Jakob"]
[Result "1/2-1/2"]
[ECO "A29"]
[WhiteElo "1863"]
[PlyCount "41"]
[EventDate "2008.01.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Be7 5. Nf3 0-0 6. 0-0 d6 7. e3 h6 8. d4 Bg4 9. h3 Bh5 10. g4 Bg6 11. d5 Nb8 12. Nh4 Bh7 13. Nf5 Nfd7 14. e4 a5 15. Be3 Nc5 16. Qd2 Bxf5 17. exf5 Nbd7 18. Rac1 Bg5 19. Bxg5 Qxg5 20. Qxg5 hxg5 21. Rfd1 1/2-1/2

[Event "Zuerich Seniors op 06th"]
[Site "Zuerich"]
[Date "2008.??.??"]
[Round "?"]
[White "Nievergelt, Jakob"]
[Black "Koch, Jost"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "1880"]
[PlyCount "138"]
[EventDate "2008.01.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. g3 d5 2. d3 Nf6 3. Bg2 e6 4. Nd2 Be7 5. e4 Nbd7 6. Qe2 0-0 7. e5 Ne8 8. f4 f5 9. Ngf3 c5 10. c3 b5 11. c4 bxc4 12. dxc4 Ba6 13. b3 Rb8 14. 0-0 d4 15. Ne1 Bb7 16. Nd3 Nc7 17. Nf3 a5 18. Ba3 Na6 19. Rfb1 Be4 20. Nfe1 Bxg2 21. Qxg2 Nb4 22. Bc1 Qc7 23. Bd2 Rb7 24. Rb2 Rfb8 25. Rab1 Qc6 26. a3 Qxg2+ 27. Kxg2 Nc6 28. Kf2 g5 29. Nc2 g4 30. Ke2 Kf7 31. a4 h5 32. Na3 h4 33. gxh4 Bxh4 34. Nb5 Be7 35. Rg1 Rh8 36. Rg2 Rbb8 37. Be1 Rh6 38. Bg3 Rbh8 39. Rb1 Bh4 40. Nd6+ Ke7 41. Nb7 Bxg3 42. hxg3 Rh2 43. Kf2 Nb4 44. Nbxc5 Nxc5 45. Nxc5 Rh1 46. Rbg1 d3 47. Ke3 Rxg1 48. Rxg1 Rh2 49. Rd1 Rg2 50. Kd4 Rxg3 51. Nxd3 Rf3 52. Nxb4 axb4 53. Kc5 Rxb3 54. a5 g3 55. Rg1 Kd7 56. Kb6 Kc8 57. a6 Ra3 58. a7 b3 59. Rxg3 b2 60. Rxa3 b1Q+ 61. Kc5 Qg1+ 62. Kd6 Qb6+ 63. Ke7 Qb4+ 64. Kxe6 Qxa3 65. Kxf5 Qxa7 66. e6 Kd8 67. Kg4 Ke7 68. f5 Qg1+ 69. Kh5 Kf6 0-1

[Event "Zuerich Seniors op 06th"]
[Site "Zuerich"]
[Date "2008.??.??"]
[Round "?"]
[White "Nievergelt, Jakob"]
[Black "Wick, Hans"]
[Result "1-0"]
[ECO "B13"]
[PlyCount "49"]
[EventDate "2008.01.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. c5 g6 6. b4 Bg7 7. Bb2 0-0 8. Nf3 a6 9. Be2 b6 10. 0-0 Bb7 11. a4 Nbd7 12. a5 bxc5 13. dxc5 Rc8 14. Nbd2 Nb8 15. Nb3 Nc6 16. b5 axb5 17. Bxb5 Na7 18. Bd3 Nc6 19. Re1 Nb4 20. a6 Ba8 21. Bf1 Ne4 22. Bxg7 Kxg7 23. Qd4+ Kg8 24. Qxb4 Rb8 25. Qa3 1-0

[Event "Zuerich Seniors op 05th"]
[Site "Zuerich"]
[Date "2007.01.31"]
[Round "8"]
[White "Illi, Hans Joerg"]
[Black "Nievergelt, Jakob"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2113"]
[BlackElo "1958"]
[PlyCount "69"]
[EventDate "2007.01.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. Nbd2 d5 5. e3 0-0 6. Bd3 b6 7. 0-0 Ba6 8. Bxa6 Nxa6 9. c4 h6 10. Bxf6 Bxf6 11. Qa4 Nb8 12. Rac1 c6 13. Rc2 a6 14. Rfc1 b5 15. cxb5 cxb5 16. Qb3 Nd7 17. Qd3 Nb6 18. b3 Be7 19. Rc6 Bd6 20. Ne5 Bxe5 21. dxe5 Rc8 22. Qd4 Rxc6 23. Rxc6 Nd7 24. f4 Nb8 25. Rc2 Qd7 26. Qc5 Qb7 27. Nf3 Nd7 28. Qc7 Qxc7 29. Rxc7 Nb8 30. Nd4 g6 31. b4 Re8 32. Nb3 Kf8 33. Nc5 Re7 34. Rc8+ Re8 35. Rxb8 1-0

[Event "Zuerich Seniors op 05th"]
[Site "Zuerich"]
[Date "2007.01.30"]
[Round "6"]
[White "Hertli, Juerg"]
[Black "Nievergelt, Jakob"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "2020"]
[BlackElo "1958"]
[PlyCount "106"]
[EventDate "2007.01.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. b3 d6 3. Nc3 Nf6 4. Bc4 e6 5. f4 a6 6. Qf3 Nc6 7. Nge2 Nb4 8. Bd3 Bd7 9. 0-0 Qc7 10. a3 Nxd3 11. Qxd3 Bc6 12. Bb2 d5 13. e5 Ne4 14. Ng3 Nxc3 15. Qxc3 d4 16. Qd3 Bb5 17. Qf3 Bxf1 18. Rxf1 g6 19. Ne4 Be7 20. d3 0-0-0 21. Ra1 Rd5 22. Bc1 h5 23. Qh3 Rg8 24. Bd2 Qc6 25. Qg3 b6 26. h4 Kb7 27. Be1 Ra8 28. a4 b5 29. Qf3 Rad8 30. Qe2 Rc8 31. Nd2 Rd7 32. Ra2 Kc7 33. Kh2 Kd8 34. Kg1 Ke8 35. Bf2 Kf8 36. Kf1 Kg7 37. Qf3 Qxf3 38. Nxf3 Bd8 39. Ke2 Bb6 40. Kd2 c4 41. bxc4 bxc4 42. a5 Ba7 43. Ra4 cxd3 44. cxd3 Rcd8 45. Rc4 Rb8 46. Kc2 Rb5 47. Bxd4 Rxa5 48. Bb2 Rb7 49. Nd2 Be3 50. Nf1 Bxf4 51. Rxf4 Ra2 52. g4 Rbxb2+ 53. Kc3 Rg2 0-1

[Event "Zuerich Seniors op 05th"]
[Site "Zuerich"]
[Date "2007.01.26"]
[Round "5"]
[White "Nievergelt, Jakob"]
[Black "Nydegger, Charles"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "1958"]
[BlackElo "1842"]
[PlyCount "71"]
[EventDate "2007.01.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. a3 Bxc3+ 8. bxc3 dxc4 9. Bxc4 Qc7 10. Qe2 0-0 11. Bd2 Bd7 12. 0-0 Bc6 13. Bd3 Nbd7 14. Ne5 Nd5 15. f4 N7f6 16. g4 Ne7 17. f5 exf5 18. gxf5 Rad8 19. Rf4 g5 20. fxg6 fxg6 21. Raf1 Nh5 22. Rf7 Qd6 23. Bh6 Rxf7 24. Bc4 Bd5 25. Bxd5 Qxd5 26. Rxf7 Qe6 27. Qf3 Nf5 28. Bg5 Re8 29. Rxb7 h6 30. Bd2 Rf8 31. Qg4 Qa2 32. Qxg6+ Nhg7 33. Be1 Qe2 34. Rb1 Ne3 35. Bf2 Rxf2 36. Rb8+ 1-0

[Event "Zuerich Seniors op 4th"]
[Site "Zuerich"]
[Date "2006.01.26"]
[Round "?"]
[White "Eggmann, Karl"]
[Black "Nievergelt, Jakob"]
[Result "1-0"]
[ECO "B21"]
[PlyCount "16"]
[EventDate "2006.01.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. c3 dxc3 5. Nxc3 Nf6 6. Bc4 Nc6 7. e5 Nxe5 8. Nxe5 dxe5 1-0

[Event "Zuerich Seniors op 4th"]
[Site "Zuerich"]
[Date "2006.??.??"]
[Round "?"]
[White "Bachofen, Jakob"]
[Black "Nievergelt, Jakob"]
[Result "0-1"]
[ECO "A44"]
[PlyCount "41"]
[EventDate "2006.01.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 c5 2. d5 e5 3. dxe6 fxe6 4. e4 Nc6 5. Nc3 Nf6 6. Nf3 d6 7. Bb5 Bd7 8. 0-0 Qc7 9. Bf4 0-0-0 10. Qe2 a6 11. Bxc6 Bxc6 12. Ng5 Re8 13. Rfd1 e5 14. Bc1 h6 15. Nf3 g5 16. Nd5 Nxd5 17. exd5 Bd7 18. Nd2 e4 19. Nxe4 Bf5 20. f3 g4 21. Nxd6+ 0-1

[Event "Zuerich Seniors op 4th"]
[Site "Zuerich"]
[Date "2006.??.??"]
[Round "?"]
[White "Nievergelt, Jakob"]
[Black "Illi, Hans Joerg"]
[Result "1-0"]
[ECO "C15"]
[BlackElo "2171"]
[PlyCount "51"]
[EventDate "2006.01.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 Nc6 5. e5 Nge7 6. a3 Ba5 7. b4 Bb6 8. Na4 Bd7 9. Bg5 h6 10. Nxb6 cxb6 11. Bd2 Nf5 12. c3 b5 13. Ng3 Nxg3 14. hxg3 Qc7 15. Qh5 Ne7 16. Bd3 Nf5 17. g4 Ne7 18. g5 g6 19. Qf3 h5 20. g4 h4 21. Rh3 a5 22. Qd1 0-0-0 23. bxa5 Nc6 24. a4 Nxa5 25. axb5 Nc4 26. Ra8+ 1-0

[Event "Zuerich op-A 21th"]
[Site "Zuerich"]
[Date "1997.??.??"]
[Round "?"]
[White "Nievergelt, Jakob"]
[Black "Fricker, Alfred"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "68"]
[EventDate "1997.12.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "SUI"]
[SourceTitle "CBM 062 Extra"]
[Source "ChessBase"]
[SourceDate "1998.03.09"]
[SourceVersion "1"]
[SourceVersionDate "1998.03.09"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 e6 5. c4 Nb6 6. d5 d6 7. exd6 Qxd6 8. Nc3 a6 9. Nf3 exd5 10. cxd5 Be7 11. Be3 Bf5 12. a4 0-0 13. a5 N6d7 14. Be2 Ne5 15. Nxe5 Qxe5 16. 0-0 Bd6 17. g3 Qf6 18. Bf3 Nd7 19. Bg2 Rfe8 20. Na4 Rac8 21. Rc1 Qg6 22. Qb3 Bd3 23. Rfe1 Bb5 24. Nc3 c4 25. Qd1 Bb4 26. Ra1 Ne5 27. Be4 f5 28. Bc2 Ng4 29. Qf3 Bd7 30. Bb6 Ne5 31. Qd1 Qh6 32. Kg2 f4 33. Be4 Qh3+ 34. Kh1 Ng4 0-1

[Event "Zuerich op-B 20th"]
[Site "Zuerich"]
[Date "1996.??.??"]
[Round "?"]
[White "Eschmann, Patrick"]
[Black "Nievergelt, Jakob"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "85"]
[EventDate "1996.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "CBM 056 Extra"]
[Source "ChessBase"]
[SourceDate "1997.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1997.03.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. Be2 Nc6 5. Be3 Nf6 6. h3 0-0 7. Qd2 e5 8. Nf3 exd4 9. Nxd4 Re8 10. Nxc6 bxc6 11. Bf3 Ba6 12. 0-0-0 Rb8 13. b3 c5 14. Rhe1 Qc8 15. Bh6 Bh8 16. e5 dxe5 17. Ne4 c4 18. Bg5 Nxe4 19. Bxe4 cxb3 20. cxb3 c5 21. Qd7 c4 22. Qxc8 Rexc8 23. b4 Bb7 24. Bxb7 Rxb7 25. a3 f6 26. Be3 Bg7 27. Rd5 Bf8 28. Red1 Be7 29. Kc2 Kf7 30. Kc3 Rbc7 31. Ra5 Ra8 32. b5 Rb7 33. a4 Ke8 34. Ra6 Bd8 35. Rc6 Rc7 36. Rdd6 Rxc6 37. Rxc6 Kd7 38. Ra6 Kc7 39. Rxa7+ Rxa7 40. Bxa7 Kb7 41. Bc5 f5 42. f3 Bf6 43. Kxc4 1-0

[Event "Zuerich op-B 20th"]
[Site "Zuerich"]
[Date "1996.??.??"]
[Round "?"]
[White "Nievergelt, Jakob"]
[Black "Mathur, Manish"]
[Result "1/2-1/2"]
[ECO "E67"]
[PlyCount "45"]
[EventDate "1996.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "CBM 056 Extra"]
[Source "ChessBase"]
[SourceDate "1997.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1997.03.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nc3 d6 6. 0-0 e5 7. d4 Nbd7 8. e3 c6 9. Re1 h6 10. d5 cxd5 11. cxd5 Nc5 12. e4 Bd7 13. b4 Na6 14. a3 Rc8 15. Bd2 b5 16. Bf1 Nc7 17. Rc1 a6 18. a4 bxa4 19. Nxa4 Nb5 20. Rxc8 Bxc8 21. Qc1 Bg4 22. Bg2 Kh7 23. h3 1/2-1/2

[Event "Zuerich op-B 20th"]
[Site "Zuerich"]
[Date "1996.??.??"]
[Round "?"]
[White "Wegelin, Reinhard"]
[Black "Nievergelt, Jakob"]
[Result "0-1"]
[ECO "A44"]
[PlyCount "61"]
[EventDate "1996.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "CBM 056 Extra"]
[Source "ChessBase"]
[SourceDate "1997.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1997.03.01"]
[SourceQuality "1"]

1. d4 c5 2. d5 e5 3. Nc3 d6 4. e4 f5 5. Bb5+ Bd7 6. Bxd7+ Qxd7 7. exf5 Qxf5 8. Nge2 Na6 9. Ng3 Qg6 10. Qe2 0-0-0 11. Be3 Nf6 12. 0-0-0 Be7 13. f4 exf4 14. Bxf4 Rhe8 15. Rhe1 Bf8 16. Qc4 Nb4 17. Nb5 a6 18. Na7+ Kd7 19. Rxe8 Rxe8 20. a3 Qxc2+ 21. Qxc2 Nxc2 22. Kxc2 Kc7 23. Bg5 Ng4 24. Rf1 Kb6 25. Be7 Ne3+ 26. Kd3 Nxf1 27. Bxf8 Rxf8 28. Nc8+ Kc7 29. Nxf1 Rxf1 30. Ne7 Kd7 31. Ke2 0-1

[Event "Geneve op"]
[Site "Geneve"]
[Date "1991.??.??"]
[Round "6"]
[White "Cesareo, Fabio"]
[Black "Nievergelt, Jakob"]
[Result "1-0"]
[ECO "B06"]
[BlackElo "2000"]
[PlyCount "114"]
[EventDate "1991.01.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "CBM 021 Extra"]
[Source "ChessBase"]
[SourceDate "1991.05.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.05.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bg5 Nc6 5. Nf3 Bg4 6. Bb5 a6 7. Bxc6+ bxc6 8. Be3 Rb8 9. Rb1 Nf6 10. 0-0 0-0 11. h3 Bd7 12. Qe2 Qc8 13. Qd2 Re8 14. Bh6 Bh8 15. e5 Nh5 16. Ne2 Ng7 17. Ng3 Nf5 18. Nxf5 Bxf5 19. Nh4 dxe5 20. g4 Bxg4 21. hxg4 Qxg4+ 22. Ng2 exd4 23. Rfe1 e5 24. Qd3 Qh5 25. Bd2 c5 26. Re4 Qf5 27. Nh4 Qe6 28. Nf3 c4 29. Qf1 Qd5 30. Qh3 Qxe4 31. Ng5 Qf5 32. Qxh7+ Kf8 33. Qxh8+ Ke7 34. Qh4 Rh8 35. Qg3 f6 36. Re1 Kd7 37. Qg2 c6 38. Ne4 Rb5 39. b4 Rd5 40. a4 Rh4 41. f3 Rh8 42. Qg4 Qxg4+ 43. fxg4 Ke6 44. Rf1 Rf8 45. Bh6 Rf7 46. Nc5+ Rxc5 47. bxc5 g5 48. Kg2 Rb7 49. Rf2 e4 50. Bf8 e3 51. Re2 Kd5 52. Kf3 Rh7 53. c3 Rh3+ 54. Kg2 d3 55. Re1 d2 56. Rd1 Ke4 57. Kxh3 Kd3 1-0

[Event "Geneve op"]
[Site "Geneve"]
[Date "1991.??.??"]
[Round "3"]
[White "Efimov, Igor"]
[Black "Nievergelt, Jakob"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2470"]
[BlackElo "2000"]
[PlyCount "59"]
[EventDate "1991.01.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "CBM 021 Extra"]
[Source "ChessBase"]
[SourceDate "1991.05.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.05.01"]
[SourceQuality "1"]

1. d4 d6 2. e4 g6 3. Nc3 Bg7 4. Be3 c6 5. Qd2 Nd7 6. h4 Ngf6 7. f3 b5 8. g4 h5 9. g5 Ng8 10. a3 Bb7 11. f4 a5 12. Bg2 b4 13. Nce2 c5 14. Nh3 e6 15. 0-0 Ne7 16. axb4 cxb4 17. Ng3 0-0 18. f5 exf5 19. exf5 Bxg2 20. Qxg2 Nxf5 21. Nxf5 gxf5 22. Rxf5 Qe7 23. Bf2 Qe2 24. Nf4 Qxc2 25. Nd5 Kh8 26. Qf3 Rae8 27. Qxh5+ Kg8 28. Nf6+ Nxf6 29. gxf6 Qxb2 30. Qg5 1-0

[Event "Geneve op"]
[Site "Geneve"]
[Date "1991.??.??"]
[Round "4"]
[White "Habibi, Ali"]
[Black "Nievergelt, Jakob"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2240"]
[BlackElo "2000"]
[PlyCount "109"]
[EventDate "1991.01.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "CBM 021 Extra"]
[Source "ChessBase"]
[SourceDate "1991.05.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.05.01"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 g6 3. b3 Nf6 4. Bb2 Bg7 5. Nbd2 Nbd7 6. e4 c6 7. Be2 Qc7 8. 0-0 e5 9. c4 0-0 10. Qc2 Re8 11. Rfe1 a5 12. Rac1 exd4 13. Nxd4 Nc5 14. f3 Qb6 15. Kh1 Nh5 16. Red1 Nf4 17. Bf1 Qd8 18. Nb1 Qg5 19. g3 Nh3 20. Qd2 Qf6 21. Rc2 Ng5 22. Bg2 Qe7 23. h4 Nge6 24. Nxe6 Bxe6 25. Nc3 Be5 26. f4 Bg7 27. Qxd6 Bg4 28. Qxe7 Rxe7 29. Re1 Nd3 30. Re3 Nxb2 31. Rxb2 Rd8 32. Rc2 Red7 33. e5 Bf5 34. Be4 Bg4 35. Bf3 Bf5 36. Rce2 h5 37. Kg2 Bf8 38. Ne4 Bxe4 39. Rxe4 Bc5 40. e6 fxe6 41. Rxe6 Rd6 42. R6e5 b6 43. Rg5 Rd2 44. Rxg6+ Kf7 45. Rge6 Rxe2+ 46. Rxe2 Rh8 47. Bxc6 Kf6 48. Bd5 Bd4 49. Re6+ Kg7 50. Bf3 Rh6 51. Re7+ Kf6 52. Rd7 Bc5 53. Rd5 Kg6 54. Rg5+ Kf7 55. Bxh5+ 1-0

[Event "Geneve op"]
[Site "Geneve"]
[Date "1991.??.??"]
[Round "1"]
[White "Martinidesz, Denes"]
[Black "Nievergelt, Jakob"]
[Result "1/2-1/2"]
[ECO "C29"]
[WhiteElo "2310"]
[BlackElo "2000"]
[PlyCount "45"]
[EventDate "1991.01.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "CBM 021 Extra"]
[Source "ChessBase"]
[SourceDate "1991.05.01"]
[SourceVersion "1"]
[SourceVersionDate "1991.05.01"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 d4 7. Nf3 Nc6 8. Be2 dxc3 9. d4 Be6 10. 0-0 Be7 11. a3 0-0 12. Qd3 Bd5 13. Be3 Rb8 14. Qxc3 b5 15. Qd2 a5 16. Bd3 f6 17. Qe2 fxe5 18. Nxe5 Nxe5 19. dxe5 Qd7 20. Qh5 g6 21. Bxg6 Bxa3 22. Bf5 Qg7 23. Bxh7+ 1/2-1/2

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1972.??.??"]
[Round "4"]
[White "Kot, Silvia"]
[Black "Nievergelt, Jakob"]
[Result "1-0"]
[ECO "A05"]
[PlyCount "113"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 c5 3. Bg2 g6 4. 0-0 Bg7 5. d3 0-0 6. e4 d6 7. h3 Nbd7 8. Nh4 e5 9. a4 a6 10. a5 b5 11. axb6 Rb8 12. Bd2 Nxb6 13. Nc3 d5 14. b3 dxe4 15. dxe4 Bb7 16. Re1 Qc7 17. Bf1 c4 18. Nf3 Rfd8 19. Qe2 cxb3 20. cxb3 Rd7 21. Rec1 Qd8 22. Qe3 Ra8 23. Rd1 Ne8 24. Na4 Nxa4 25. Rxa4 Nd6 26. Ba5 Qe8 27. Rb4 Nb5 28. Rc1 Nd4 29. Rbc4 f5 30. Rc7 Nxf3+ 31. Qxf3 Bxe4 32. Qc3 Bd5 33. Rc8 Rxc8 34. Qxc8 Qxc8 35. Rxc8+ Kf7 36. Bc4 Bxc4 37. bxc4 Rd1+ 38. Kg2 Rc1 39. c5 Ke6 40. c6 Bf6 41. c7 Be7 42. Ra8 Bb4 43. Bxb4 Rxc7 44. Rxa6+ Kd5 45. Ra5+ Ke6 46. Ra2 Rc4 47. Ra6+ Kd5 48. Rd6+ Ke4 49. Bd2 Rd4 50. Rxd4+ exd4 51. Ba5 Kd3 52. Kf3 g5 53. Bd8 h6 54. Bf6 Kc4 55. Ke2 d3+ 56. Kd2 g4 57. h4 1-0

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1972.??.??"]
[Round "8"]
[White "Name, Gabriel Ricardo"]
[Black "Nievergelt, Jakob"]
[Result "1-0"]
[ECO "C82"]
[PlyCount "63"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 0-0 11. Qe2 Nxd2 12. Qxd2 d4 13. Bc2 Qd7 14. Ng5 Bf5 15. Ne4 Bxe4 16. Bxe4 Rad8 17. Qg5 dxc3 18. bxc3 Qe6 19. Bf4 Ne7 20. Rae1 h6 21. Qh5 Ng6 22. Bg3 Rd2 23. Bf5 Qb6 24. e6 Ne7 25. exf7+ Rxf7 26. Be6 Bxf2+ 27. Kh1 g6 28. Qe5 Nf5 29. Bxf7+ Kxf7 30. Qe8+ Kf6 31. Bh4+ Bxh4 32. Qe7# 1-0

[Event "Sao Paulo op"]
[Site "Sao Paulo"]
[Date "1972.??.??"]
[Round "1"]
[White "Nievergelt, Jakob"]
[Black "Panno, Oscar"]
[Result "0-1"]
[ECO "B47"]
[PlyCount "64"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nc3 e6 6. Be2 Nf6 7. 0-0 a6 8. Kh1 b5 9. Nxc6 dxc6 10. f4 b4 11. e5 bxc3 12. exf6 gxf6 13. f5 cxb2 14. Bxb2 e5 15. Bc4 h5 16. Rf3 a5 17. Qd3 Rb8 18. Bc3 Bb4 19. Bxb4 Rxb4 20. a3 Rb8 21. Rg3 Qd8 22. Qe2 Bxf5 23. Rd1 Qe7 24. Qf3 h4 25. Rg7 Bg6 26. Qxc6+ Kf8 27. Rxg6 fxg6 28. h3 Rd8 29. Rb1 Qd6 30. Qb5 Kg7 31. Qxa5 Qd2 32. Rb7+ Kh6 0-1

