[Event "LAT-SUI corr"]
[Site "Latvia"]
[Date "1994.??.??"]
[Round "?"]
[White "Svendsen, Thomas"]
[Black "Jakobs, I."]
[Result "1-0"]
[ECO "C95"]
[PlyCount "101"]
[EventDate "1994.??.??"]
[EventType "team (corr)"]
[EventRounds "2"]
[EventCountry "LAT"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

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. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. a4 c5 16. d5 c4 17. Bg5 h6 18. Be3 Nc5 19. Rf1 Bg7 20. Qd2 Kh7 21. Nh2 Nxa4 22. Bxa4 bxa4 23. Rxa4 a5 24. f4 h5 25. fxe5 dxe5 26. Bg5 Ba6 27. Rf3 Qb6+ 28. Qf2 Qxf2+ 29. Rxf2 Bb5 30. Ra1 Nd7 31. Rxf7 Kg8 32. Raf1 Rf8 33. R7f3 Rae8 34. Ra1 a4 35. Rxf8+ Bxf8 36. Nf3 Nc5 37. Nh4 Be7 38. Bxe7 Rxe7 39. Ra2 Nd3 40. Nf3 Kg7 41. Nf1 Rc7 42. Ng5 Kf6 43. h4 Ke7 44. Nd2 Kd6 45. g3 Bd7 46. Nf7+ Kc5 47. Nf3 Be8 48. Nd8 Rc8 49. Nb7+ Kb6 50. Nd6 Ra8 51. Nxc4+ 1-0

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1989.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Bischoff, Klaus"]
[Result "1-0"]
[ECO "D38"]
[PlyCount "71"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. a3 Bxc3+ 6. bxc3 d5 7. e3 Nc6 8. Bd2 Ne4 9. Bd3 Nxd2 10. Nxd2 cxd4 11. cxd4 dxc4 12. Nxc4 0-0 13. 0-0 Qe7 14. Be4 Bd7 15. f4 f5 16. Bf3 Rac8 17. Qe2 Rc7 18. Rfc1 Rfc8 19. Qb2 b6 20. Nd2 g5 21. g3 Qg7 22. Kh1 g4 23. Bg2 Qf8 24. d5 Na5 25. Rxc7 Rxc7 26. Qe5 Rc5 27. Rd1 Qc8 28. e4 Kf7 29. h3 h5 30. exf5 exf5 31. Ne4 fxe4 32. Qxh5+ Kg7 33. Qg5+ Kf7 34. Qh5+ Kg7 35. Bxe4 Qa8 36. Qh7+ 1-0

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1989.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Reitz"]
[Result "1-0"]
[ECO "E81"]
[PlyCount "107"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 a6 7. Qd2 e5 8. dxe5 dxe5 9. Nd5 Nbd7 10. Ne2 c6 11. Nxf6+ Nxf6 12. Rd1 Qxd2+ 13. Rxd2 Be6 14. Nc3 Rfd8 15. Be2 Rxd2 16. Kxd2 Rd8+ 17. Kc2 Ne8 18. Bb6 Rd7 19. Na4 Bh6 20. Rd1 Rxd1 21. Kxd1 Nd6 22. b3 f6 23. Nc5 Bc8 24. Nd3 Kf7 25. a4 Bg7 26. c5 Ne8 27. Nb2 Ke7 28. Bc4 Bf8 29. Kc2 Ng7 30. Kc3 Be6 31. b4 Kd7 32. Ba5 Be7 33. Nd3 Bxc4 34. Kxc4 Ne6 35. b5 axb5+ 36. axb5 cxb5+ 37. Kxb5 g5 38. Bd2 Bd8 39. Nb4 Nd4+ 40. Ka4 b6 41. cxb6 Bxb6 42. Be3 Bc7 43. Nd5 Bd8 44. Bxd4 exd4 45. Kb3 Ke6 46. Kc4 d3 47. Kxd3 f5 48. Kd4 fxe4 49. fxe4 Ba5 50. e5 Bd8 51. Ke4 h6 52. Nb4 Bc7 53. Nc6 g4 54. Nd4+ 1-0

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1989.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Schmidt"]
[Result "0-1"]
[ECO "E30"]
[PlyCount "70"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. Bg5 h6 6. Bd2 Bb7 7. e3 0-0 8. Rc1 c5 9. a3 Bxc3 10. Bxc3 Ne4 11. dxc5 Nxc3 12. Rxc3 bxc5 13. Be2 Nc6 14. 0-0 Rb8 15. Bd3 f5 16. Bb1 Qe7 17. e4 f4 18. e5 g5 19. h3 Qg7 20. Re1 h5 21. Qd6 g4 22. Nd2 Nd4 23. Qxc5 Nf3+ 24. Nxf3 gxf3 25. g3 fxg3 26. Kf1 Qg5 27. Qd4 Bc6 28. b4 Rf4 29. Qd3 gxf2 30. Qh7+ Kf8 31. Kxf2 Qh4+ 32. Kf1 Qxh3+ 33. Kf2 Qh4+ 34. Kf1 Qxe1+ 35. Kxe1 f2+ 0-1

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1989.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Sommer, Paul"]
[Result "1/2-1/2"]
[ECO "E67"]
[PlyCount "74"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. g3 d6 6. Bg2 Nbd7 7. Bg5 c5 8. e3 h6 9. Bxf6 Nxf6 10. Qb3 Rb8 11. dxc5 dxc5 12. 0-0 a6 13. Rfd1 Qc7 14. a4 e6 15. Nd2 Bd7 16. e4 Bc6 17. Qc2 Rfd8 18. Nb3 b6 19. Qe2 Qb7 20. f3 Nd7 21. Rd2 Bf6 22. Nd1 Nf8 23. e5 Bg7 24. Nc3 g5 25. f4 Ng6 26. Rf1 gxf4 27. gxf4 Nh4 28. Bxc6 Qxc6 29. Qe4 Qc7 30. Rdf2 Nf5 31. Rg2 Kh8 32. Kh1 Rg8 33. Rfg1 Rbd8 34. Nd1 a5 35. Ne3 Nxe3 36. Qxe3 Qc6 37. Nd2 Rd4 1/2-1/2

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1989.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Wolff"]
[Result "1/2-1/2"]
[ECO "A52"]
[PlyCount "54"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nc3 Qe7 7. Qd5 Bxc3+ 8. bxc3 f6 9. e6 dxe6 10. Qb5 e5 11. Bd2 a6 12. Qa4 e4 13. Nd4 Bd7 14. Qb3 Na5 15. Qb4 Qxb4 16. cxb4 Nxc4 17. Bf4 c6 18. e3 Nge5 19. Bxc4 Nxc4 20. Ke2 0-0 21. Rac1 Nb6 22. a3 Nd5 23. Bg3 Rfe8 24. h3 Kf7 25. Nb3 Rad8 26. Na5 Bc8 27. Nc4 Ke6 1/2-1/2

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1989.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Zugehoer, Erik"]
[Result "1-0"]
[ECO "E21"]
[PlyCount "65"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 Ne4 5. Bd2 Nxd2 6. Qxd2 f5 7. a3 Bxc3 8. Qxc3 d6 9. e3 Nd7 10. Bd3 Nf6 11. Nd2 0-0 12. f3 Bd7 13. 0-0 Qe8 14. Rae1 Qh5 15. e4 Ne8 16. e5 d5 17. cxd5 exd5 18. Qb3 Bc6 19. Bb5 Qh6 20. f4 Qe6 21. Rc1 Bxb5 22. Qxb5 Rb8 23. Qa5 a6 24. Nb3 c6 25. Rfe1 Qe7 26. Qb6 Nc7 27. Nc5 Rfe8 28. a4 g6 29. Rc3 Ne6 30. Nxe6 Qxe6 31. b4 Qd7 32. Rec1 Re6 33. Rc5 1-0

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1989.??.??"]
[Round "?"]
[White "Littke, Adam"]
[Black "Jakobs, I."]
[Result "1-0"]
[ECO "E81"]
[PlyCount "83"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 Nbd7 6. Be3 0-0 7. Qd2 c5 8. 0-0-0 cxd4 9. Bxd4 Qa5 10. Kb1 Qc7 11. h4 a6 12. h5 Ne5 13. Nd5 Nxd5 14. cxd5 b5 15. Rc1 Qb7 16. f4 Nc4 17. Bxc4 Bxd4 18. Qxd4 bxc4 19. Nf3 Bg4 20. h6 f6 21. Rxc4 Rfc8 22. Rhc1 Rxc4 23. Rxc4 Rc8 24. Rxc8+ Bxc8 25. Qc3 Bd7 26. Nd4 Kf7 27. a3 Bb5 28. Nc6 Qb6 29. Ka2 Bf1 30. g4 Qc5 31. Nd8+ Ke8 32. Qxc5 dxc5 33. Ne6 c4 34. g5 Bg2 35. Nc5 Kf7 36. Kb1 f5 37. e5 Bxd5 38. Nxa6 Be4+ 39. Kc1 Ke6 40. Nc5+ Kd5 41. Nxe4 Kxe4 42. a4 1-0

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1989.??.??"]
[Round "?"]
[White "Suess, P."]
[Black "Jakobs, I."]
[Result "1-0"]
[ECO "E77"]
[PlyCount "43"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 Nbd7 7. Be2 c5 8. d5 a6 9. a4 Ne8 10. 0-0 Qc7 11. Ra3 Rb8 12. Kh1 Ndf6 13. h3 Nh5 14. Qe1 Bd7 15. g4 Bxc3 16. Rxc3 Nhg7 17. Qh4 f5 18. gxf5 gxf5 19. e5 dxe5 20. fxe5 f4 21. e6 Rf5 22. Ng5 1-0

[Event "DDR-chJ corr"]
[Site "DDR"]
[Date "1988.??.??"]
[Round "?"]
[White "Brundisch, Volker"]
[Black "Jakobs, I."]
[Result "1-0"]
[ECO "B35"]
[PlyCount "61"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8. 0-0 d6 9. Nd5 Nxe4 10. Qf3 f5 11. Nb5 Kf8 12. c3 Qd8 13. Bb3 Bd7 14. Ndc7 Rc8 15. Ne6+ Bxe6 16. Bxe6 Ra8 17. Rad1 a6 18. Nd4 Nxd4 19. cxd4 d5 20. g4 Qd6 21. gxf5 Nf6 22. Kh1 Rd8 23. Rc1 Qb6 24. Rc2 h5 25. Rg1 g5 26. Rxg5 Qb5 27. Rc1 Qd3 28. Rxg7 Kxg7 29. Bh6+ Rxh6 30. Qxd3 Ne4 31. Qe3 1-0

[Event "DDR-chJ corr"]
[Site "DDR"]
[Date "1988.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Rausch, Stephan"]
[Result "1-0"]
[ECO "A85"]
[PlyCount "81"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Nf3 Be7 5. Qc2 0-0 6. Bg5 d5 7. Bxf6 Bxf6 8. e3 c6 9. Rc1 a5 10. a3 Bd7 11. Bd3 Qe7 12. 0-0 Be8 13. Ne2 g5 14. Nd2 Bg6 15. cxd5 exd5 16. Rce1 Qe6 17. Kh1 Nd7 18. Ng3 Bg7 19. e4 f4 20. Nf5 Rae8 21. Nf3 Bxf5 22. exf5 Qh6 23. Re6 Rxe6 24. fxe6 g4 25. Re1 gxf3 26. exd7 fxg2+ 27. Kg1 Kf7 28. Bxh7 Bf6 29. Re8 f3 30. Qg6+ Qxg6 31. Bxg6+ Kg7 32. Bh5 Bg5 33. Rc8 Bh4 34. Rc7 Kh6 35. Rc8 Kg7 36. Re8 Bg5 37. b3 Rf5 38. h3 Rf8 39. Re5 Bf6 40. Re3 Bxd4 41. Re7+ 1-0

[Event "DDR corr"]
[Site "DDR"]
[Date "1988.??.??"]
[Round "?"]
[White "Oschatz, Werner"]
[Black "Jakobs, I."]
[Result "0-1"]
[ECO "B35"]
[PlyCount "94"]
[EventDate "1988.08.04"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8. 0-0 d6 9. f3 Bd7 10. Qd2 Rc8 11. Bb3 Ne5 12. h3 a6 13. a3 Nc4 14. Bxc4 Rxc4 15. Nb3 Qc7 16. Qf2 Be6 17. Bb6 Qd7 18. Rad1 0-0 19. Na5 Rcc8 20. Nd5 Nxd5 21. exd5 Bxh3 22. gxh3 Bxb2 23. Rd3 Bc3 24. Nb3 Qxh3 25. Nd2 Qf5 26. Qe3 Bxd2 27. Qxd2 Rc4 28. Rf2 Rfc8 29. Qd1 Rh4 30. Rg2 Qh5 31. Kf1 Rcc4 32. Qd2 Rh3 33. Kf2 Qh4+ 34. Ke2 Rh1 35. Rd4 Qh3 36. Rf2 Rc8 37. Qd3 Rb1 38. Rb4 Qh1 39. Qd2 Rc1 40. Rb2 Ra1 41. Bd4 b5 42. Rb3 Rc1 43. Rc3 Rc4 44. Rxc4 bxc4 45. Qc3 f6 46. Ke3 Kg7 47. Rh2 Qg1+ 0-1

[Event "DDR corr"]
[Site "DDR"]
[Date "1988.??.??"]
[Round "?"]
[White "Reinsch, G."]
[Black "Jakobs, I."]
[Result "1-0"]
[ECO "D05"]
[PlyCount "97"]
[EventDate "1988.08.04"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e3 c5 2. Nf3 Nc6 3. d4 e6 4. Be2 Nf6 5. 0-0 d5 6. b3 cxd4 7. Nxd4 Bd7 8. Bb2 Rc8 9. Nd2 Bd6 10. Nb5 Bb8 11. Ba3 Ne7 12. Nd6+ Bxd6 13. Bxd6 Nf5 14. Ba3 Qa5 15. Bb2 Nd6 16. c4 Bc6 17. a4 Nde4 18. Nxe4 Nxe4 19. Bh5 dxc4 20. Qg4 g6 21. Bxh8 Ke7 22. Qh4+ g5 23. Qg4 f5 24. Qe2 Rxh8 25. bxc4 Rd8 26. Qb2 Qc3 27. Qxc3 Nxc3 28. a5 Ne4 29. Be2 g4 30. Rfd1 Nc3 31. Rxd8 Nxe2+ 32. Kf1 Kxd8 33. Kxe2 Bxg2 34. Kd3 Kd7 35. Kd4 Kd6 36. c5+ Kc6 37. a6 b5 38. cxb6 Kxb6 39. Kc4 Bf3 40. Kb4 Be2 41. e4 Bxa6 42. Ra5 Bc8 43. Rb5+ Kc7 44. Kc5 a6 45. Rb4 h5 46. e5 h4 47. h3 g3 48. Rxh4 gxf2 49. Rf4 1-0

[Event "DDR corr"]
[Site "DDR"]
[Date "1988.??.??"]
[Round "?"]
[White "Rolle, Hannes"]
[Black "Jakobs, I."]
[Result "1-0"]
[ECO "B38"]
[PlyCount "87"]
[EventDate "1988.08.04"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 h5 8. f3 d6 9. Qd2 Bd7 10. Be2 a6 11. h4 Rc8 12. 0-0 0-0 13. Rfd1 Kh7 14. Rac1 Nxd4 15. Bxd4 Qa5 16. b3 Bh6 17. Be3 Bxe3+ 18. Qxe3 Rg8 19. a4 Be6 20. f4 Qc5 21. Qxc5 Rxc5 22. Bf3 b6 23. Re1 Nd7 24. f5 Bxc4 25. bxc4 Ne5 26. fxg6+ fxg6 27. Nd5 Nd3 28. Nxb6 Kg7 29. Red1 Nxc1 30. Rxc1 a5 31. Nd5 Rgc8 32. Nxe7 Rxc4 33. Rd1 Re8 34. Nd5 Rxa4 35. Nb6 Rb4 36. Rxd6 a4 37. Nd5 Rb1+ 38. Kh2 Ra8 39. e5 Ra7 40. Be4 Re1 41. Rxg6+ Kf8 42. Nf6 Kf7 43. Rg5 Ra5 44. Bd5+ 1-0

[Event "DDR-chT corr"]
[Site "DDR"]
[Date "1988.??.??"]
[Round "?"]
[White "Theissig"]
[Black "Jakobs, I."]
[Result "0-1"]
[ECO "B88"]
[PlyCount "60"]
[EventDate "1988.??.??"]
[EventType "team (corr)"]
[EventRounds "2"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 e6 3. Nc3 Nc6 4. Nf3 d6 5. 0-0 Be7 6. d4 cxd4 7. Nxd4 Nf6 8. Bb5 Bd7 9. Be3 0-0 10. Nxc6 bxc6 11. Bd3 Qc7 12. f4 c5 13. Qe1 d5 14. e5 Ng4 15. Bd2 c4 16. Be2 Qc5+ 17. Kh1 Nh6 18. g4 f5 19. exf6 Bxf6 20. g5 Bxc3 21. Bxc3 Nf5 22. Bb4 Qb6 23. Bxf8 Rxf8 24. Qf2 Ne3 25. Rfc1 e5 26. Qg3 d4 27. h3 Rxf4 28. Re1 Bc6+ 29. Kh2 d3 30. Bxd3 Rf2+ 0-1

[Event "DDR corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Borriss, Martin"]
[Result "0-1"]
[ECO "E92"]
[PlyCount "66"]
[EventDate "1980.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. e4 0-0 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. 0-0 c6 11. Rfd1 h6 12. Bh4 Nbd7 13. b4 a5 14. a3 g5 15. Bg3 Nh5 16. Nd2 Nf4 17. Bg4 h5 18. Bxd7 Bxd7 19. bxa5 h4 20. Bxf4 exf4 21. Rac1 Be6 22. Ne2 Rxa5 23. Nb3 Rxa3 24. Nc5 Bc8 25. f3 h3 26. Rc2 b6 27. Nd3 Rd8 28. Rcd2 Ba6 29. Nb4 Rxd2 30. Rxd2 Bxc4 31. Nxc6 Bf8 32. Nxf4 Bc5+ 33. Nd4 gxf4 0-1

[Event "corr"]
[Site "corr"]
[Date "1978.??.??"]
[Round "?"]
[White "Jakobs, I."]
[Black "Kruglov, Aleksandr Aleksandr"]
[Result "0-1"]
[ECO "C89"]
[PlyCount "54"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. Bxd5 cxd5 19. a4 f5 20. Qf1 Qh5 21. f4 Rfe8 22. Qf2 bxa4 23. c4 Bb4 24. cxd5 Bxd2 25. Qxd2 Rd6 26. Rxa4 Bf3 27. Bf2 Qxh2+ 0-1

