[Event "SWE-ch K1"]
[Site "Borlange"]
[Date "1992.??.??"]
[Round "?"]
[White "Jakobsson, Ivar"]
[Black "Costello, Colin"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "49"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Nf6 5. Bg5 Be7 6. e3 0-0 7. Bd3 Nbd7 8. Qf3 Re8 9. 0-0-0 c5 10. Nge2 c4 11. Bc2 Qa5 12. h4 Bf8 13. Nf4 b5 14. Nfxd5 Nxd5 15. Qxd5 Rb8 16. Bxh7+ Kxh7 17. Qxf7 b4 18. h5 Ne5 19. dxe5 Be6 20. Qg6+ Kg8 21. Ne4 Bc5 22. h6 Qc7 23. Nf6+ Kf8 24. hxg7+ Qxg7 25. Bh6 1-0

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "9"]
[White "Carlsson, Nils"]
[Black "Jakobsson, Ivar"]
[Result "1-0"]
[ECO "D43"]
[PlyCount "54"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. Bg5 Bb4 6. e3 Qa5 7. Qc2 Ne4 8. Bd3 Bxc3+ 9. bxc3 Nxg5 10. Nxg5 dxc4 11. Bxc4 Qxg5 12. 0-0 0-0 13. Bd3 g6 14. f4 Qe7 15. g3 b6 16. a4 c5 17. e4 Bb7 18. a5 Rd8 19. f5 exf5 20. exf5 Qe3+ 21. Rf2 cxd4 22. cxd4 Rxd4 23. Bf1 Qe4 24. Qxe4 Bxe4 25. axb6 axb6 26. Re1 Bxf5 27. Re8+ Kg7 1-0

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "1"]
[White "Fransson, Jorgen"]
[Black "Jakobsson, Ivar"]
[Result "1-0"]
[ECO "A51"]
[PlyCount "87"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nf3 Nc6 5. Nbd2 Bb4 6. e3 d5 7. Be2 Bg4 8. 0-0 f5 9. exf6 Nxf6 10. Nd4 Nxd4 11. exd4 Bxe2 12. Qxe2+ Qe7 13. Qxe7+ Bxe7 14. Re1 Kd7 15. c5 Rae8 16. Nf3 c6 17. Ne5+ Kc8 18. h3 Rhf8 19. f3 Nh5 20. Be3 Bh4 21. Bf2 Bg5 22. Nd3 Bd2 23. Rxe8+ Rxe8 24. Rd1 Be3 25. Re1 Bxf2+ 26. Kxf2 Rf8 27. Re7 g5 28. Rxh7 Nf6 29. Rg7 a5 30. Ke3 Re8+ 31. Ne5 g4 32. hxg4 Rh8 33. Nf7 Rh1 34. Nd6+ Kd8 35. Nxb7+ Kc8 36. Nd6+ Kd8 37. Rf7 Nd7 38. g5 Rh8 39. Kf4 a4 40. Kg4 Rh2 41. Rg7 Rxg2+ 42. Kh3 Rxb2 43. Rg8+ Ke7 44. Re8# 1-0

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "3"]
[White "Jakobsson, Ivar"]
[Black "Andersson, Goran"]
[Result "0-1"]
[ECO "A03"]
[PlyCount "68"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. b3 Bg7 5. Bb2 0-0 6. Be2 c5 7. 0-0 Nc6 8. Ne5 Qb6 9. d4 Bf5 10. g4 Bc8 11. g5 Ne4 12. Bf3 Nxe5 13. Bxe4 Ng4 14. Bxd5 Nxe3 15. Qf3 Nxf1 16. Kxf1 cxd4 17. Nd2 Rd8 18. Nc4 Qb5 19. Be4 Be6 20. a4 Bxc4+ 21. Kg2 Qb6 22. a5 Qb5 23. Bxb7 Bd5 24. Bxd5 Qxd5 25. Rd1 Qxf3+ 26. Kxf3 Rac8 27. Ba3 Rxc2 28. Bxe7 Re8 29. Bf6 Re3+ 30. Kg4 Rxh2 31. Rxd4 h5+ 32. gxh6 Bxf6 33. h7+ Kxh7 34. f5 Rh4# 0-1

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "5"]
[White "Jakobsson, Ivar"]
[Black "Andreasson, Arthur"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "118"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. f4 e6 2. e4 Nc6 3. Nc3 Bc5 4. Nf3 h6 5. d4 Bb6 6. e5 Nge7 7. Be3 Nf5 8. Bf2 a6 9. Bc4 d5 10. exd6 cxd6 11. 0-0 d5 12. Bb3 Bd7 13. Ne2 Na5 14. Ne5 Nxb3 15. axb3 0-0 16. h3 Rc8 17. c3 Qe8 18. Ng3 Nxg3 19. Bxg3 f5 20. Bh2 Bc7 21. g4 Bxe5 22. fxe5 Qg6 23. Qc2 Rf7 24. Kh1 Rcf8 25. Rg1 Qh7 26. Rg2 fxg4 27. Qxh7+ Kxh7 28. Rxg4 Bb5 29. Rag1 Bd3 30. Bg3 Bf5 31. Rf4 Be4+ 32. Rxe4 dxe4 33. Kg2 Rf3 34. Re1 Rd3 35. Re2 g5 36. Be1 Rff3 37. Rxe4 Rfe3 38. Rxe3 Rxe3 39. Kf2 Rxh3 40. b4 Kg7 41. b3 Kf7 42. Bd2 Ke7 43. Be3 Kd7 44. c4 Rh2+ 45. Kf3 Rb2 46. Kg4 Rxb3 47. Bf2 Rxb4 48. Kh5 Rxc4 49. Kxh6 a5 50. Kxg5 a4 51. Kf6 Rc6 52. d5 exd5+ 53. Kf7 b5 54. Bd4 b4 55. Bc5 b3 56. Ba3 d4 57. Bc1 d3 58. Ba3 d2 59. Bb2 d1Q 0-1

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "6"]
[White "Jakobsson, Ivar"]
[Black "Eriksson, Claes"]
[Result "1-0"]
[ECO "A27"]
[PlyCount "59"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. Nf3 Nc6 3. Nc3 d6 4. e4 Nge7 5. a3 a5 6. d3 Bg4 7. Be3 g6 8. h3 Bxf3 9. Qxf3 Bg7 10. Be2 Qd7 11. 0-0 0-0 12. Rad1 f5 13. exf5 Qxf5 14. Qxf5 Nxf5 15. Bf3 Kh8 16. g4 Nfd4 17. Be4 Ne6 18. f3 Rac8 19. Kg2 Nf4+ 20. Kg3 Bf6 21. Rh1 g5 22. Rh2 Nd8 23. Nd5 Nxd5 24. cxd5 Nf7 25. Rc1 Bd8 26. Bf5 Rb8 27. Be6 c5 28. dxc6 bxc6 29. Rxc6 Rb3 30. Bxb3 1-0

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "4"]
[White "Jakobsson, Ivar"]
[Black "Johansson, Hakan"]
[Result "1-0"]
[ECO "A02"]
[PlyCount "49"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. f4 f5 2. e4 fxe4 3. d3 exd3 4. Bxd3 Nf6 5. Nf3 e6 6. Ne5 d6 7. 0-0 b6 8. Ng4 Ba6 9. Nxf6+ Qxf6 10. Re1 Bxd3 11. Qxd3 Nc6 12. Qf3 Kd7 13. Nd2 d5 14. c4 Bc5+ 15. Kh1 Nd4 16. Qh3 Rae8 17. cxd5 Nc2 18. Ne4 Qh6 19. dxe6+ Kc8 20. Qf3 Kb8 21. Nxc5 bxc5 22. Qb3+ Nb4 23. a3 a5 24. axb4 cxb4 25. Rxa5 1-0

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "8"]
[White "Karlsson, Torbjorn"]
[Black "Jakobsson, Ivar"]
[Result "1-0"]
[ECO "A51"]
[PlyCount "69"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. e3 Nc6 5. Qd5 Bb4+ 6. Bd2 Nxd2 7. Nxd2 0-0 8. a3 Ne7 9. Qd3 Bxd2+ 10. Qxd2 d6 11. exd6 cxd6 12. 0-0-0 d5 13. e4 Nc6 14. cxd5 Na5 15. Kb1 f5 16. e5 f4 17. Bd3 Bd7 18. e6 Ba4 19. Bc2 Nc4 20. Qc3 Bxc2+ 21. Qxc2 Rc8 22. Qb3 Qg5 23. Qf3 Ne3 24. fxe3 fxe3 25. Qe4 Rf2 26. e7 Re8 27. d6 Qf6 28. Qd4 Qf5+ 29. Qd3 Qf6 30. Ne2 Rxe2 31. Qxe2 Qf5+ 32. Ka1 Qf6 33. Qxe3 b5 34. Qb3+ Kh8 35. Rhf1 1-0

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "2"]
[White "Klinthage, Jorgen"]
[Black "Jakobsson, Ivar"]
[Result "1-0"]
[ECO "B10"]
[PlyCount "71"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d3 d5 3. Nd2 d4 4. f4 Nh6 5. g3 Na6 6. Bg2 Ng4 7. Ndf3 Qb6 8. Ne2 e5 9. Nxe5 Bb4+ 10. Kf1 Ne3+ 11. Bxe3 dxe3 12. Nc4 Qc7 13. c3 Bc5 14. d4 Bd6 15. Nxe3 Be6 16. Qc2 0-0-0 17. Kf2 h5 18. h4 Rhe8 19. Rhf1 Kb8 20. f5 Bd7 21. Kg1 g5 22. fxg6 fxg6 23. e5 Be7 24. Qxg6 Rg8 25. Qe4 c5 26. Kh2 Bb5 27. Nd5 Rxd5 28. Qxd5 Bxe2 29. Qxg8+ Bd8 30. Rf8 Kc8 31. Bh3+ Bg4 32. Bxg4+ hxg4 33. Qxg4+ Kb8 34. Raf1 b6 35. Qg8 Kc8 36. Rxd8+ 1-0

[Event "SWE-ch Class2"]
[Site "Sweden"]
[Date "1974.??.??"]
[Round "7"]
[White "Younger, Sven"]
[Black "Jakobsson, Ivar"]
[Result "1/2-1/2"]
[ECO "A51"]
[PlyCount "101"]
[EventDate "1974.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 Nc6 5. Nf3 d6 6. h3 Be6 7. e3 f5 8. Qc2 dxe5 9. b4 Qf6 10. Bb2 0-0-0 11. b5 Ne7 12. Nxe5 Qh4 13. Nf3 Qh6 14. Nc3 Nc5 15. Na4 Ne4 16. Bd4 b6 17. Bd3 Qg6 18. 0-0 Ng8 19. Rfc1 Nc5 20. Nxc5 bxc5 21. Be5 Bd6 22. Bxd6 Rxd6 23. Nh4 Qg5 24. Nf3 Qf6 25. Nh2 h5 26. g3 f4 27. g4 hxg4 28. Nxg4 Bxg4 29. hxg4 Qh6 30. Kf1 f3 31. Ke1 Ne7 32. Kd2 Qf6 33. Qc3 Qxc3+ 34. Kxc3 Rhd8 35. Be4 Ng6 36. Bxf3 Rd3+ 37. Kb2 Ne5 38. Be4 Rd2+ 39. Rc2 Nxc4+ 40. Kc3 Rxc2+ 41. Bxc2 Nb6 42. Bf5+ Kb8 43. Bc2 Rf8 44. Rf1 Nd5+ 45. Kd2 Rd8 46. Ke1 Nc3 47. Rh1 Nxb5 48. a4 Na3 49. Bb3 c4 50. Bd1 c3 51. Rh2 1/2-1/2

