[Event "FIN-chT1A 0607"]
[Site "Finland"]
[Date "2006.09.??"]
[Round "2.6"]
[White "Kosonen, Markku"]
[Black "Tammi, Tauno"]
[Result "1-0"]
[ECO "B00"]
[PlyCount "39"]
[EventDate "2006.09.16"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "FIN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Vantaa Remi"]
[BlackTeam "Eura SK"]
[WhiteTeamCountry "FIN"]
[BlackTeamCountry "FIN"]

1. e4 e5 2. d4 Nc6 3. d5 Nce7 4. d6 cxd6 5. Nc3 a6 6. Bc4 Nc6 7. f4 Nf6 8. Nf3 Be7 9. Be3 0-0 10. f5 b5 11. Bb3 b4 12. Nd5 Rb8 13. Nxf6+ Bxf6 14. h4 Qe7 15. g4 Qe8 16. g5 Bd8 17. g6 Be7 18. Ng5 Nd8 19. Qh5 h6 20. Nxf7 1-0

[Event "Jarvenpaa We JarvSK"]
[Site "Jarvanpaa"]
[Date "1998.??.??"]
[Round "4"]
[White "Franssila, Tommi"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2225"]
[PlyCount "71"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[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 Bb4 6. e5 Nd5 7. Bd2 Nxc3 8. bxc3 Bc5 9. Bd3 a6 10. Qg4 Kf8 11. h4 Qc7 12. Nf3 Nc6 13. Qg3 d6 14. Bf4 d5 15. h5 Bd7 16. Rh4 Ne7 17. Ng5 Ke8 18. Nxh7 Kd8 19. h6 gxh6 20. Nf6 Kc8 21. Qg7 Rd8 22. Rxh6 Nc6 23. Rh8 Rxh8 24. Qxh8+ Nd8 25. Nxd7 Kxd7 26. Ke2 Be7 27. Bd2 Rc8 28. f4 Ba3 29. Rb1 b5 30. Qh5 Kc6 31. Qf3 Nb7 32. c4 bxc4 33. Bxc4 Qe7 34. Bxa6 Rb8 35. Qc3+ Bc5 36. Be3 1-0

[Event "Lahti We LahS"]
[Site "Lahti"]
[Date "1998.??.??"]
[Round "5"]
[White "Kaunonen, Kalevi"]
[Black "Kosonen, Markku"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "94"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 d5 4. Nbd2 Nc6 5. c3 Bd6 6. Be2 Nge7 7. Nf1 0-0 8. Ng3 f5 9. Bg5 h6 10. Bxe7 Qxe7 11. Qc2 b5 12. Nd2 Rb8 13. Bf3 Ne5 14. Ne2 c4 15. dxc4 fxe4 16. Bxe4 dxe4 17. Nxe4 bxc4 18. 0-0 Nd3 19. b3 Bxh2+ 20. Kxh2 Qh4+ 21. Kg1 Qxe4 22. Ng3 Qc6 23. bxc4 Qxc4 24. Rad1 Ba6 25. Qe2 Nf4 26. Qxc4 Bxc4 27. Rfe1 Bxa2 28. Rd7 Rf7 29. Rxf7 Kxf7 30. Re4 g5 31. Ra4 Bd5 32. Rxa7+ Rb7 33. Ra5 Bxg2 34. c4 Rb1+ 35. Kh2 Rc1 36. c5 Bf3 37. Ra3 g4 38. Ra4 e5 39. Ra7+ Kg6 40. Rc7 h5 41. Rc8 h4 42. Rg8+ Kf7 43. Rc8 hxg3+ 44. Kxg3 Rh1 45. Rc7+ Ke8 46. Rc8+ Kd7 47. Rh8 Ne2# 0-1

[Event "Jarvenpaa We JarvSK"]
[Site "Jarvanpaa"]
[Date "1998.??.??"]
[Round "1"]
[White "Kosonen, Markku"]
[Black "Liitiainen, Elia"]
[Result "1-0"]
[ECO "D11"]
[PlyCount "87"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. g3 d5 3. Bg2 Bf5 4. c4 e6 5. Nc3 c6 6. Nf3 Bd6 7. 0-0 Nbd7 8. Nh4 Bg6 9. Nxg6 hxg6 10. Bg5 Qc7 11. Rc1 a6 12. cxd5 exd5 13. Qa4 Rh5 14. Bxf6 Nxf6 15. e4 dxe4 16. Nxe4 Nd5 17. Bf3 Rh6 18. Ng5 Ne7 19. d5 b5 20. Qd4 Be5 21. Qc5 Bd6 22. Qc3 Be5 23. Qc2 Bf6 24. Ne4 Be5 25. dxc6 0-0-0 26. a4 Nf5 27. Bg4 Rd4 28. axb5 axb5 29. Nc5 Rxg4 30. Ra1 Qxc6 31. Ra6 Qd5 32. Rfa1 Rc4 33. Ra8+ Bb8 34. Qe2 Rxc5 35. Qe8+ Kc7 36. Qxb8+ Kd7 37. Qe8+ Kc7 38. R1a7+ Kb6 39. Ra6+ Kc7 40. R8a7+ Qb7 41. Qxf7+ Kd8 42. Qf8+ Kd7 43. Rxb7+ Rc7 44. Qf7+ 1-0

[Event "Lahti We LahS"]
[Site "Lahti"]
[Date "1998.??.??"]
[Round "4"]
[White "Kosonen, Markku"]
[Black "Nykanen, Ossi"]
[Result "1/2-1/2"]
[ECO "B14"]
[PlyCount "45"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 g6 6. Bg5 dxc4 7. Bxf6 exf6 8. Bxc4 Be7 9. Nge2 0-0 10. 0-0 Kg7 11. Rc1 Nd7 12. Re1 Nb6 13. Bb3 Bd6 14. Ng3 f5 15. Qd3 a6 16. Re2 Nd7 17. Rce1 Nf6 18. d5 b5 19. Qd4 Kg8 20. a4 b4 21. Nb1 a5 22. Rc2 Bb7 23. Nf1 1/2-1/2

[Event "Jarvenpaa We JarvSK"]
[Site "Jarvanpaa"]
[Date "1998.??.??"]
[Round "5"]
[White "Kosonen, Markku"]
[Black "Turtiainen, Tauno"]
[Result "1/2-1/2"]
[ECO "A45"]
[PlyCount "21"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 c5 3. Bd3 g6 4. Nd2 Bg7 5. c3 cxd4 6. exd4 Nc6 7. Qe2 0-0 8. Ngf3 d6 9. 0-0 e5 10. dxe5 dxe5 11. Bb5 1/2-1/2

[Event "Lahti We LahS"]
[Site "Lahti"]
[Date "1998.??.??"]
[Round "2"]
[White "Kosonen, Markku"]
[Black "Vetemaa, Juri"]
[Result "0-1"]
[ECO "B11"]
[BlackElo "2325"]
[PlyCount "68"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 g6 2. f4 c6 3. Nc3 d5 4. exd5 cxd5 5. Bb5+ Nc6 6. Nf3 a6 7. Ba4 b5 8. Bb3 Nf6 9. 0-0 Bg4 10. Ne2 e6 11. h3 Qb6+ 12. d4 Bf5 13. c3 h5 14. Ng3 Be7 15. Qe1 Ne4 16. Nxf5 gxf5 17. a4 Na5 18. Bc2 b4 19. Ne5 Rc8 20. Bd2 Bd6 21. Kh2 Nxd2 22. Qxd2 bxc3 23. bxc3 Qb2 24. Rab1 Qxc3 25. Qxc3 Rxc3 26. Bd3 Nb3 27. Rfd1 a5 28. Bb5+ Kf8 29. Rb2 Rg8 30. Rf2 h4 31. Nc6 Rgg3 32. Ne5 Rge3 33. Re2 Kg7 34. Rxe3 Rxe3 0-1

[Event "Jarvenpaa We JarvSK"]
[Site "Jarvanpaa"]
[Date "1998.??.??"]
[Round "3"]
[White "Luukkonen, Tommi"]
[Black "Kosonen, Markku"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "2160"]
[PlyCount "107"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5 5. Bb5 dxe4 6. Nxc6 Qxd1+ 7. Kxd1 a6 8. Ba4 Bd7 9. Nc3 Bxc6 10. Bxc6+ bxc6 11. Nxe4 0-0-0+ 12. Ke2 e5 13. Be3 Nf6 14. Nxf6 gxf6 15. Rad1 Be7 16. g4 Kc7 17. Kf3 h5 18. h3 hxg4+ 19. hxg4 Rxh1 20. Rxh1 Kd7 21. Ke4 Ke6 22. c4 Rb8 23. b3 a5 24. f4 a4 25. f5+ Kd7 26. Rd1+ Kc7 27. Rd3 axb3 28. axb3 Rg8 29. g5 Rh8 30. Bf2 fxg5 31. Kxe5 Re8 32. Bg3 Bd8+ 33. Kd4+ Kb6 34. Be5 Bc7 35. Bf6 Bd8 36. Be5 Bc7 37. c5+ Kb7 38. Bd6 Bxd6 39. cxd6 Kc8 40. Rh3 Kd7 41. Rh7 Kxd6 42. Rxf7 c5+ 43. Kd3 Rb8 44. Kc4 Rb4+ 45. Kc3 Rf4 46. f6 Ke6 47. Rc7 Rf5 48. f7 g4 49. f8Q Rxf8 50. Rxc5 Rg8 51. Rh5 g3 52. Rh1 g2 53. Rg1 Kf5 54. Kc4 1/2-1/2

[Event "Lahti We LahS"]
[Site "Lahti"]
[Date "1998.??.??"]
[Round "1"]
[White "Nyback, Tomi"]
[Black "Kosonen, Markku"]
[Result "0-1"]
[ECO "A85"]
[PlyCount "54"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. Nc3 d5 5. e3 c6 6. a3 Bd6 7. Rb1 Nbd7 8. b4 0-0 9. c5 Bc7 10. a4 Ne4 11. Bd2 Qe7 12. b5 e5 13. Be2 Rf6 14. h4 Rg6 15. Kf1 Ndf6 16. Nxe4 fxe4 17. Ng5 Bd7 18. b6 axb6 19. cxb6 Bd6 20. a5 Rf8 21. a6 bxa6 22. b7 h6 23. Nh3 Ng4 24. h5 Nxf2 25. Nxf2 Rgf6 26. Be1 exd4 27. Qxd4 Qf7 0-1

[Event "Lahti We LahS"]
[Site "Lahti"]
[Date "1998.??.??"]
[Round "3"]
[White "Salonen, Juhani"]
[Black "Kosonen, Markku"]
[Result "1/2-1/2"]
[ECO "A34"]
[PlyCount "25"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c4 Nc6 4. Nc3 Nf6 5. d3 d6 6. Be2 Be7 7. 0-0 0-0 8. a3 b6 9. h3 Bb7 10. Be3 d5 11. cxd5 exd5 12. e5 Nd7 13. d4 1/2-1/2

[Event "FIN-chT 1div A 9798"]
[Site "Finland"]
[Date "1997.??.??"]
[Round "2"]
[White "Kosonen, Markku"]
[Black "Kivimaki, Jaakko"]
[Result "1/2-1/2"]
[ECO "D00"]
[BlackElo "2220"]
[PlyCount "21"]
[EventDate "1997.??.??"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "FIN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 c6 3. Nf3 h6 4. Bh4 Qb6 5. b3 Bg4 6. Ne5 Bf5 7. e3 e6 8. Bd3 Be7 9. Bxf5 exf5 10. Bxe7 Nxe7 11. 0-0 1/2-1/2

[Event "FIN-chT 1div A 9798"]
[Site "Finland"]
[Date "1997.??.??"]
[Round "4"]
[White "Sund, Jan"]
[Black "Kosonen, Markku"]
[Result "1/2-1/2"]
[ECO "A83"]
[WhiteElo "2080"]
[PlyCount "12"]
[EventDate "1997.??.??"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "FIN"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 Nc6 5. f3 exf3 6. Nxf3 e6 1/2-1/2

[Event "Valkeakoski sim"]
[Site "Valkeakoski"]
[Date "1996.??.??"]
[Round "?"]
[White "Karpov, Anatoly"]
[Black "Kosonen, Markku"]
[Result "1/2-1/2"]
[ECO "A81"]
[WhiteElo "2770"]
[PlyCount "42"]
[EventDate "1996.??.??"]
[EventType "simul"]
[EventRounds "1"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. e4 fxe4 6. Nxe4 d5 7. Nxf6+ exf6 8. Be3 Be6 9. Ne2 c6 10. c3 Na6 11. Nf4 Bf7 12. h4 Nc7 13. Bh3 0-0 14. Qb3 b6 15. 0-0-0 Re8 16. Rhe1 Nb5 17. Kb1 a5 18. a4 Nd6 19. f3 Ra7 20. Bc1 Rae7 21. Rxe7 Rxe7 1/2-1/2

[Event "Heart of Finland op 06th"]
[Site "Jyvaskyla"]
[Date "1996.??.??"]
[Round "3"]
[White "Kosonen, Markku"]
[Black "Koskinen, Henri"]
[Result "0-1"]
[ECO "D00"]
[BlackElo "2230"]
[PlyCount "42"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 c6 3. e3 h6 4. Bh4 Qb6 5. b3 e5 6. Nf3 e4 7. Nfd2 Ne7 8. c4 Nf5 9. Bg3 Be6 10. Be2 Nxd4 11. cxd5 Bxd5 12. Nc3 Nxe2 13. Qxe2 Bb4 14. Nxd5 cxd5 15. 0-0 0-0 16. Rfd1 Nc6 17. Nb1 d4 18. exd4 Nxd4 19. Qb2 Qf6 20. Kh1 Rac8 21. h3 Rfd8 0-1

[Event "Heart of Finland op 06th"]
[Site "Jyvaskyla"]
[Date "1996.??.??"]
[Round "5"]
[White "Kosonen, Markku"]
[Black "Porrasmaa, Timo"]
[Result "0-1"]
[ECO "C41"]
[BlackElo "2140"]
[PlyCount "96"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 c6 6. Bc4 Be7 7. a3 Qc7 8. h3 Nf8 9. Bh4 Ng6 10. dxe5 dxe5 11. Bg3 0-0 12. Nh2 b5 13. Bb3 Nd7 14. Qh5 Nc5 15. Ba2 Ne6 16. Ne2 b4 17. axb4 Bxb4+ 18. c3 Bd6 19. 0-0 a5 20. Rfd1 Nc5 21. Qf3 Rb8 22. Rd2 Nb3 23. Bxb3 Rxb3 24. Rad1 Be7 25. Nc1 Rb7 26. Nf1 Be6 27. Ne3 Rfb8 28. Qe2 Bg5 29. b3 h6 30. c4 Qb6 31. Kh2 Qc7 32. Ra2 Nf8 33. Qe1 Rb4 34. Qc3 Nd7 35. f3 Be7 36. Nf5 Bf8 37. Rd3 f6 38. Rb2 Nc5 39. Re3 Na4 40. bxa4 Rxb2 41. Nd3 Rb1 42. Qd2 Bxc4 43. f4 Bxd3 44. Rxd3 Qb6 45. Bf2 Qb2 46. Qe3 Rb3 47. Rxb3 Qxb3 48. Qa7 exf4 0-1

[Event "Heart of Finland op 06th"]
[Site "Jyvaskyla"]
[Date "1996.??.??"]
[Round "9"]
[White "Kosonen, Markku"]
[Black "Sihvonen, Tero"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "2190"]
[PlyCount "43"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. g3 e6 4. Bg2 c5 5. 0-0 Nc6 6. b3 cxd4 7. Nxd4 Bd7 8. Bb2 Rc8 9. Nd2 e5 10. Nxc6 Bxc6 11. Bxe5 Ba3 12. Bd4 0-0 13. c4 a6 14. cxd5 Nxd5 15. Nc4 Be7 16. e4 Nb4 17. Nb6 Rb8 18. e5 Bxg2 19. Kxg2 Nd5 20. Nc4 Qd7 21. Bb2 b5 22. Nd6 1/2-1/2

[Event "Heart of Finland op 06th"]
[Site "Jyvaskyla"]
[Date "1996.??.??"]
[Round "8"]
[White "Tuominen, Risto"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2105"]
[PlyCount "74"]
[EventDate "1996.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. c4 0-0 6. Nc3 d6 7. d5 c6 8. 0-0 Qb6 9. Rb1 Na6 10. b4 Bd7 11. dxc6 bxc6 12. Be3 Qc7 13. Qa4 Nb8 14. Qb3 h6 15. Nd4 Kh7 16. h3 e5 17. Ndb5 cxb5 18. Bxa8 bxc4 19. Qa3 f4 20. gxf4 Bxh3 21. Rfd1 Nc6 22. Bxc6 Qxc6 23. f3 Ng4 24. Nd5 Rxf4 25. b5 Qc8 26. Bxf4 exf4 27. Nxf4 Nf6 28. Qxd6 Qf5 29. Nxh3 Qxh3 30. Qh2 Qf5 31. Rbc1 Nd5 32. e4 Qg5+ 33. Qg2 Qe3+ 34. Kf1 Nb4 35. Qe2 Qf4 36. Rxc4 a5 37. Rd7 Qh4 1-0

[Event "FIN-ch SM5 corr"]
[Site "Finland"]
[Date "1994.??.??"]
[Round "?"]
[White "Kosonen, Markku"]
[Black "Huuskonen, Veli Matti"]
[Result "0-1"]
[ECO "E30"]
[PlyCount "70"]
[EventDate "1994.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "FIN"]
[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. Bg5 c5 5. d5 Bxc3+ 6. bxc3 d6 7. dxe6 Bxe6 8. e3 h6 9. Bh4 Nbd7 10. Bd3 Ne5 11. Rb1 Qa5 12. Ne2 g5 13. Bg3 Nxd3+ 14. Qxd3 Qxa2 15. Nc1 Bxc4 16. Qf5 Be6 17. Qd3 c4 18. Nxa2 cxd3 19. Nc1 Ne4 20. Nxd3 Bf5 21. Rd1 Nxc3 22. Rc1 Ne4 23. Nb4 Be6 24. Rc7 h5 25. h4 Nxg3 26. fxg3 gxh4 27. Rxh4 a5 28. Nd3 b5 29. Nf4 b4 30. Nxe6 fxe6 31. Rd4 d5 32. e4 b3 33. exd5 0-0 34. dxe6 b2 35. Rd1 Rfb8 0-1

[Event "Tampere op2"]
[Site "Tampere"]
[Date "1994.??.??"]
[Round "1"]
[White "Kosonen, Markku"]
[Black "Sappinen, Jorma Veikko"]
[Result "1-0"]
[ECO "C34"]
[PlyCount "57"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 d6 4. Bc4 Nf6 5. 0-0 Bg4 6. d3 Nc6 7. Bxf4 Be7 8. c3 0-0 9. Nbd2 d5 10. exd5 Nxd5 11. Bxd5 Qxd5 12. d4 Rac8 13. Qb3 Qxb3 14. Nxb3 b6 15. Rae1 Rfe8 16. d5 Nb8 17. h3 Bxf3 18. gxf3 Nd7 19. Kg2 Nf6 20. c4 Nh5 21. Bh2 f5 22. Nd4 f4 23. Nc6 Bh4 24. Re4 Rxe4 25. fxe4 Bg3 26. Ne7+ Kh8 27. Nxc8 Nf6 28. Bxg3 fxg3 29. e5 1-0

[Event "Tampere op2"]
[Site "Tampere"]
[Date "1994.??.??"]
[Round "3"]
[White "Kosonen, Markku"]
[Black "Silvasti, Timo"]
[Result "1-0"]
[ECO "D01"]
[PlyCount "33"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 Nd7 3. Nc3 Ngf6 4. e3 e6 5. Nf3 Be7 6. Bd3 h6 7. Bh4 0-0 8. 0-0 c5 9. dxc5 Nxc5 10. a3 Nfe4 11. Bxe7 Qxe7 12. Bxe4 Nxe4 13. Nxe4 dxe4 14. Nd2 f5 15. Nc4 e5 16. Qd5+ Be6 17. Qxe5 1-0

[Event "Tampere op2"]
[Site "Tampere"]
[Date "1994.??.??"]
[Round "4"]
[White "Lahti, Ahti"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "54"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c3 Bg4 4. Nbd2 e6 5. h3 Bh5 6. e3 c5 7. Be2 cxd4 8. cxd4 Bd6 9. Ne5 Bxe2 10. Qxe2 0-0 11. 0-0 Nbd7 12. f4 g6 13. Ndf3 Nh5 14. Qe1 f6 15. Ng4 Qe7 16. Nfh2 f5 17. Ne5 Nxe5 18. fxe5 Bc7 19. Nf3 f4 20. Nh2 Rf5 21. Rf3 Raf8 22. Bd2 Ng3 23. Qd1 h5 24. Qb3 Bb6 25. Re1 Qh4 26. Qc2 Ne4 27. Rxf4 Rxf4 1-0

[Event "SSL-ch"]
[Site "Helsinki"]
[Date "1993.??.??"]
[Round "5"]
[White "Holmsten, Aleksei"]
[Black "Kosonen, Markku"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "2265"]
[PlyCount "94"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d5 5. Nxc6 bxc6 6. exd5 Qxd5 7. Nc3 Qxd1+ 8. Nxd1 Nf6 9. Ne3 e6 10. Be2 Nd5 11. Bf3 Bb7 12. Bd2 0-0-0 13. Nc4 Nb4 14. 0-0-0 f6 15. a3 Nd5 16. Na5 Bc5 17. c4 Ne7 18. Rhe1 e5 19. Bb4 Bxb4 20. axb4 Kc7 21. Kc2 Nf5 22. Kc3 Nd4 23. Be4 Ne2+ 24. Kc2 Nd4+ 25. Kc1 Ba6 26. f4 Kb6 27. fxe5 fxe5 28. Bxc6 Nxc6 29. Nxc6 Rxd1+ 30. Kxd1 Kxc6 31. b5+ Bxb5 32. cxb5+ Kd5 33. Kc2 Rc8+ 34. Kd3 Re8 35. Ra1 Re7 36. Rc1 Rb7 37. Ra1 Kc5 38. Ke4 Rxb5 39. Rxa7 Kd6 40. Rxg7 Rxb2 41. Rxh7 Rxg2 42. Rh6+ Ke7 43. Kxe5 Kf7 44. Rh3 Ra2 45. Rf3+ Kg6 46. Rg3+ Kh6 47. h3 Ra5+ 1/2-1/2

[Event "SSL-ch"]
[Site "Helsinki"]
[Date "1993.??.??"]
[Round "4"]
[White "Kosonen, Markku"]
[Black "Saarinen, Timo A"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "37"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 g6 2. f4 d6 3. Nf3 Nd7 4. Bc4 Bg7 5. Bxf7+ Kf8 6. Ng5 Ndf6 7. d3 c6 8. Bb3 Nh6 9. Nc3 Qb6 10. Qe2 Nfg4 11. h3 Bxc3+ 12. bxc3 Qc5 13. hxg4 Qxc3+ 14. Qd2 Qd4 15. Rb1 e5 16. Bb2 Qb6 17. fxe5 Ke8 18. exd6 Rf8 19. Bg7 1-0

[Event "SSL-ch"]
[Site "Helsinki"]
[Date "1993.??.??"]
[Round "6"]
[White "Kosonen, Markku"]
[Black "Sammalvuo, Tapani"]
[Result "0-1"]
[ECO "B25"]
[BlackElo "2280"]
[PlyCount "70"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nf3 Nge7 8. 0-0 exf4 9. Bxf4 0-0 10. Qd2 Be6 11. Bh6 Bxh6 12. Qxh6 f6 13. Bh3 Qd7 14. Bxe6+ Qxe6 15. Nh4 Rf7 16. Kg2 Nd4 17. Rf2 b5 18. Nf3 Nxf3 19. Rxf3 b4 20. Ne2 Qe5 21. c3 bxc3 22. bxc3 Rb8 23. Qd2 Nc6 24. Re3 d5 25. d4 cxd4 26. cxd4 Qd6 27. a3 Rfb7 28. Ra2 dxe4 29. Rxe4 f5 30. Rf4 Qd5+ 31. Kf2 Qh1 32. h4 Rb1 33. Rc2 Rd1 34. Qxd1 Qxd1 35. Rxc6 Re8 0-1

[Event "SSL-ch"]
[Site "Helsinki"]
[Date "1993.??.??"]
[Round "2"]
[White "Kosonen, Markku"]
[Black "Yrjola, Jouni"]
[Result "1-0"]
[ECO "A83"]
[BlackElo "2460"]
[PlyCount "81"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FIN"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 Nc6 5. d5 Ne5 6. Bxf6 exf6 7. Nxe4 f5 8. Ng3 g6 9. Qe2 Qe7 10. 0-0-0 Bh6+ 11. Kb1 d6 12. h3 Bd7 13. Nf3 Nxf3 14. Qxf3 0-0 15. Bd3 Qf6 16. Ne2 Bg7 17. c3 b5 18. Bc2 b4 19. Nd4 a5 20. Rhe1 Rab8 21. Bb3 a4 22. Bc4 Rfe8 23. Rxe8+ Rxe8 24. a3 bxc3 25. bxc3 Re4 26. Qd3 Qe7 27. Nf3 f4 28. Ka2 Bf5 29. Qf1 Bxc3 30. Rc1 Bg7 31. Bd3 Qf6 32. Rb1 Re8 33. Bxf5 Qxf5 34. Qc4 h6 35. Nd4 Qe4 36. Rd1 Qxg2 37. Rd2 Qxh3 38. Qxc7 Re1 39. Qc4 Qf1 40. Qxa4 Ra1+ 41. Kb3 1-0

[Event "SSL-ch"]
[Site "Helsinki"]
[Date "1993.??.??"]
[Round "3"]
[White "Lahtinen, Markku"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "2220"]
[PlyCount "35"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 e6 4. Nc3 exd5 5. d4 Be6 6. cxd5 Nxd5 7. Bd3 Be7 8. Nge2 0-0 9. 0-0 c5 10. dxc5 Bxc5 11. Nxd5 Qxd5 12. Nf4 Qc6 13. Nxe6 fxe6 14. Qh5 g6 15. Bxg6 hxg6 16. Qxg6+ Kh8 17. Qh5+ Kg8 18. Bh6 1-0

[Event "SSL-ch"]
[Site "Helsinki"]
[Date "1993.??.??"]
[Round "1"]
[White "Vaisanen, Paavo"]
[Black "Kosonen, Markku"]
[Result "0-1"]
[ECO "D40"]
[PlyCount "41"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FIN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 a6 4. Nf3 Bb4 5. Qc2 c5 6. e3 0-0 7. Bd3 d5 8. dxc5 Bxc5 9. cxd5 exd5 10. 0-0 Nc6 11. a3 Bg4 12. Nd2 Rc8 13. Bf5 Bxf5 14. Qxf5 Ne7 15. Qf3 Re8 16. b4 Bxb4 17. Ne2 Bxd2 18. Bxd2 Ne4 19. Rfd1 Rc2 20. Bb4 Ng6 21. Nd4 0-1

[Event "FIN-SWE corr"]
[Site "Finland"]
[Date "1991.??.??"]
[Round "?"]
[White "Trokenheim, Marek"]
[Black "Kosonen, Markku"]
[Result "1/2-1/2"]
[ECO "A00"]
[PlyCount "81"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "2"]
[EventCountry "FIN"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. e3 0-0 5. a3 Ba5 6. Qf3 Ne8 7. Bc3 Bb6 8. Bd3 d5 9. Ne2 c6 10. Bb4 c5 11. Bc3 Nc6 12. 0-0 Be6 13. Nf4 Qd7 14. Nxe6 fxe6 15. Bxh7+ Kxh7 16. Qxf8 d4 17. Bb2 Ne5 18. Qf4 Ng6 19. Qg5 Nf6 20. d3 Rh8 21. Nd2 Bc7 22. Nf3 b6 23. a4 Qe8 24. Bc1 Kg8 25. exd4 Rh5 26. Qd2 cxd4 27. Re1 Nf4 28. Qd1 Nxg2 29. Kxg2 Qg6+ 30. Kf1 Qf5 31. Ke2 Rh3 32. Nxd4 Qg4+ 33. Kf1 Qxd4 34. Qe2 e5 35. Bg5 Qd5 36. Kg1 Rxh2 37. Kxh2 e4+ 38. Kg1 Qxg5+ 39. Kf1 Qh4 40. f4 Qh1+ 41. Kf2 1/2-1/2

[Event "Helsinki HOSK op"]
[Site "Helsinki"]
[Date "1990.??.??"]
[Round "1"]
[White "Germanavicius, Sarunas"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "D34"]
[PlyCount "86"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. 0-0 0-0 9. Bg5 h6 10. Be3 cxd4 11. Nxd4 Re8 12. Rc1 Bg4 13. h3 Bh5 14. Re1 Bb4 15. a3 Bxc3 16. Rxc3 Ne5 17. Bf4 Rc8 18. Rxc8 Qxc8 19. Qc1 Qd7 20. Qd1 Nc4 21. Bc1 Ne4 22. Nf3 Bxf3 23. exf3 Nc5 24. Rxe8+ Qxe8 25. Qxd5 Qe1+ 26. Bf1 Qxc1 27. Qxc5 b5 28. Qc8+ Kh7 29. b3 Qxa3 30. bxc4 bxc4 31. Qxc4 Kg8 32. Bd3 g5 33. Be4 a5 34. Bd5 Qe7 35. Kg2 Kf8 36. Qc8+ Kg7 37. Qc3+ Kg6 38. Qxa5 Qd6 39. Be4+ Kg7 40. Qf5 Qb6 41. Bd5 Qc7 42. f4 f6 43. Be4 Kf8 1-0

[Event "Helsinki HOSK op"]
[Site "Helsinki"]
[Date "1990.??.??"]
[Round "3"]
[White "Hermlin, Aarne"]
[Black "Kosonen, Markku"]
[Result "0-1"]
[ECO "C80"]
[WhiteElo "2355"]
[PlyCount "99"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[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. Be3 Be7 10. Nbd2 Nc5 11. Nd4 Nxd4 12. Bxd4 Nd7 13. f4 g6 14. c3 c5 15. Be3 h5 16. Bc2 Qc7 17. a4 Qb7 18. axb5 axb5 19. Rxa8+ Qxa8 20. f5 gxf5 21. Bxf5 Kd8 22. Bxe6 fxe6 23. Nf3 Rg8 24. Qd3 Kc7 25. Qxb5 c4 26. b4 Rb8 27. Qa5+ Qxa5 28. bxa5 Ra8 29. Nd4 Ra6 30. Rf7 Kd8 31. Bf4 Bc5 32. Be3 Ke8 33. Rh7 Nxe5 34. Rxh5 Ng4 35. Rh8+ Kf7 36. Rh3 e5 37. Rf3+ Rf6 38. Nc2 Rxf3 39. Bxc5 Rxc3 40. Ne1 Rc1 41. Kf1 Nxh2+ 42. Ke2 Ra1 43. Bb6 Ra2+ 44. Kd1 Ke6 45. Nc2 d4 46. Nb4 Ra4 47. Na6 Kd6 48. Nc5 Ra2 49. a6 Kc6 50. Ba7 0-1

[Event "Helsinki HOSK op"]
[Site "Helsinki"]
[Date "1990.??.??"]
[Round "4"]
[White "Kosonen, Markku"]
[Black "Tarakanov, Oleg"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "77"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 e6 5. cxd5 exd5 6. Qc2 Bb4 7. e3 Nbd7 8. Bd3 h6 9. Bh4 0-0 10. Nge2 Re8 11. 0-0 Qa5 12. a3 Bd6 13. Rfc1 Qc7 14. Bg3 Bxg3 15. Nxg3 Nf8 16. b4 Bd7 17. Qb3 Qb8 18. a4 Ng4 19. b5 h5 20. bxc6 Bxc6 21. Be2 Qd6 22. Nb5 Qb8 23. Nc3 Rd8 24. Bf3 Qd6 25. Nb5 Qg6 26. Nc7 h4 27. Ne2 Nxh2 28. Kxh2 Qd6+ 29. Kg1 Qxc7 30. Nf4 Qd6 31. Rc5 Ne6 32. Bxd5 Nxf4 33. Bxf7+ Kf8 34. Rf5 Ne2+ 35. Kf1 Ke7 36. Bh5 Bd5 37. Rf7+ Ke8 38. Qb5+ Bc6 39. Qg5 1-0

[Event "Helsinki HOSK op"]
[Site "Helsinki"]
[Date "1990.??.??"]
[Round "2"]
[White "Kosonen, Markku"]
[Black "Vuori, Hannu"]
[Result "1-0"]
[ECO "A80"]
[PlyCount "101"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 f5 2. h3 d5 3. Bg5 g6 4. c4 c6 5. e3 Bg7 6. Nc3 Nf6 7. cxd5 cxd5 8. Bb5+ Bd7 9. Qb3 e6 10. Nf3 Nc6 11. Ne5 a6 12. Bxc6 Bxc6 13. 0-0 0-0 14. Nxc6 bxc6 15. Na4 h6 16. Bxf6 Bxf6 17. Rfc1 Rb8 18. Qc3 Rc8 19. Nc5 Qe8 20. Nxa6 e5 21. Nc5 f4 22. Re1 fxe3 23. fxe3 Qe7 24. Nd3 Bh4 25. Rf1 exd4 26. exd4 Qe3+ 27. Kh1 Qe2 28. Nf4 Qe4 29. Qf3 Qxf3 30. Rxf3 g5 31. Ng6 Rxf3 32. gxf3 Re8 33. Nxh4 gxh4 34. a4 Rb8 35. a5 Rxb2 36. a6 Rb8 37. a7 Ra8 38. Kg2 Kf7 39. Ra6 Ke7 40. f4 Kf6 41. Kf3 Kf5 42. Ra5 h5 43. Ra6 c5 44. dxc5 d4 45. c6 d3 46. c7 d2 47. Ke2 Kxf4 48. c8N Rxc8 49. a8N Rxa8 50. Rxa8 Kg3 51. Ra3+ 1-0

[Event "Helsinki HOSK op"]
[Site "Helsinki"]
[Date "1990.??.??"]
[Round "5"]
[White "Yrjola, Jouni"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2495"]
[PlyCount "127"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "FIN"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Bf4 Nf6 5. Rc1 c6 6. e3 Nbd7 7. Nf3 0-0 8. cxd5 exd5 9. h3 Re8 10. Bd3 Nf8 11. Bg3 Ne6 12. 0-0 g6 13. Bh2 Ng7 14. Ne5 Nd7 15. e4 Nxe5 16. dxe5 dxe4 17. Nxe4 Be6 18. Qc2 Nf5 19. Rfd1 Qb6 20. Nd6 Nxd6 21. exd6 Bg5 22. Ra1 Bf6 23. Rd2 Rad8 24. Bc4 Bd4 25. Bg3 Bf5 26. Bd3 Bxd3 27. Qxd3 Be5 28. Re1 Bxg3 29. Rxe8+ Rxe8 30. Qxg3 Qc5 31. Kh2 Rd8 32. d7 Qe7 33. Qc7 Qf6 34. g3 Qg5 35. f4 Qe7 36. Qxb7 Qe3 37. Rg2 Qd4 38. Qxc6 Rxd7 39. Qc2 Rd8 40. b3 Qd5 41. Re2 h5 42. h4 Qd4 43. f5 Rd6 44. fxg6 Rxg6 45. Qf5 Rf6 46. Re8+ Kg7 47. Qg5+ Rg6 48. Qe5+ Qxe5 49. Rxe5 Ra6 50. a4 Rb6 51. Rb5 Rxb5 52. axb5 Kg6 53. Kg2 Kf6 54. Kf2 Ke6 55. Ke2 Kf6 56. Ke3 Ke5 57. Kf3 Kf5 58. b4 f6 59. b6 axb6 60. b5 Ke5 61. g4 hxg4+ 62. Kxg4 Ke4 63. h5 f5+ 64. Kh3 1-0

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Kosonen, Markku"]
[Black "Kiviaho, Allan"]
[Result "1-0"]
[ECO "E30"]
[PlyCount "112"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 Bxc3+ 7. bxc3 d6 8. dxe6 Bxe6 9. e3 Nbd7 10. Bd3 Qa5 11. Ne2 d5 12. cxd5 Nxd5 13. 0-0 0-0 14. c4 Nc3 15. Nxc3 Qxc3 16. Qb3 Qxb3 17. axb3 a5 18. Be4 Ra7 19. f3 b5 20. Rfc1 Rb8 21. Bc6 bxc4 22. bxc4 Ne5 23. Bb5 f6 24. Bg3 Rd8 25. e4 Kf7 26. Bf2 Rc8 27. Ra4 Nd3 28. Rca1 Nb2 29. Rxa5 Rxa5 30. Rxa5 Nxc4 31. Ra7+ Kg8 32. Re7 Rb8 33. Re8+ Rxe8 34. Bxe8 Nd6 35. Ba4 c4 36. Kf1 Kf7 37. Bc5 Nb7 38. Bb4 g5 39. Ke2 Kg6 40. Ke3 Nd8 41. g3 f5 42. e5 Bd5 43. Be8+ Kg7 44. Bh5 Ne6 45. f4 g4 46. Be8 Nc7 47. Kd4 Bf7 48. Bd7 Ne6+ 49. Kc3 Kg6 50. Bd6 Ng7 51. Bb5 h5 52. Be7 Ne8 53. e6 Nc7 54. exf7 Nxb5+ 55. Kxc4 Kxf7 56. Kxb5 Kxe7 1-0

[Event "FIN corr"]
[Site "Finland"]
[Date "1988.??.??"]
[Round "?"]
[White "Ehrnrooth, Johan"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "E48"]
[PlyCount "59"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "FIN"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 d5 6. Nge2 b6 7. a3 Bd6 8. cxd5 exd5 9. b4 Be6 10. Qc2 g6 11. Nb5 Nbd7 12. Nxd6 cxd6 13. 0-0 Qe7 14. f3 Rac8 15. Qd2 Nh5 16. Nc3 f5 17. Ba6 Rcd8 18. Bb7 Ndf6 19. Bc6 Rc8 20. b5 Rc7 21. Qa2 Qf7 22. Bd2 Rfc8 23. Rac1 Ng7 24. a4 a5 25. Qb3 Ngh5 26. g4 Ng7 27. g5 Nd7 28. e4 f4 29. Nxd5 Nb8 30. Qb2 1-0

[Event "FIN-ch UKM/V2 corr"]
[Site "Finland"]
[Date "1987.??.??"]
[Round "?"]
[White "Arpiainen, Vesa"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "E52"]
[PlyCount "49"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "FIN"]
[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. e3 0-0 5. Bd3 d5 6. Nf3 b6 7. 0-0 Bb7 8. cxd5 exd5 9. Ne5 Nbd7 10. Qa4 Bd6 11. Nxd7 Nxd7 12. Bb5 Nb8 13. Bd2 a6 14. Bd3 Nd7 15. Rac1 Nf6 16. Ne2 Re8 17. Bb4 b5 18. Qa5 Bxh2+ 19. Kxh2 Ng4+ 20. Kg3 Qg5 21. f4 Rxe3+ 22. Rf3 Qh5 23. Rxe3 Nxe3 24. Qxc7 Ng4 25. Qxb7 1-0

[Event "FIN-ch UKM/V2 corr"]
[Site "Finland"]
[Date "1987.??.??"]
[Round "?"]
[White "Hoikkala, Ari"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "C99"]
[PlyCount "61"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "FIN"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[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 d6 9. h3 Na5 10. Bc2 c5 11. d4 cxd4 12. cxd4 Bb7 13. Nbd2 Qc7 14. Nf1 Rac8 15. Re2 d5 16. dxe5 Nxe4 17. Ng3 Nxg3 18. fxg3 f5 19. Kh2 Nc4 20. Nd4 Rce8 21. Ne6 Qc6 22. Nxf8 Rxf8 23. b3 Nb6 24. Bb2 Qh6 25. Rf2 g6 26. Qd4 Nd7 27. b4 Bg5 28. Qa7 Bc8 29. Bb3 Be3 30. Bxd5+ Kh8 31. Qxd7 1-0

[Event "FIN-ch UKM/A20 corr"]
[Site "Finland"]
[Date "1986.??.??"]
[Round "?"]
[White "Vainio, Matti"]
[Black "Kosonen, Markku"]
[Result "0-1"]
[ECO "E39"]
[PlyCount "94"]
[EventDate "1986.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "FIN"]
[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. Qc2 c5 5. dxc5 0-0 6. Bg5 Na6 7. e3 Nxc5 8. Bd3 Nxd3+ 9. Qxd3 d5 10. Nge2 b6 11. Bxf6 Qxf6 12. cxd5 exd5 13. Qxd5 Ba6 14. Qd4 Qe7 15. a3 Bxc3+ 16. Nxc3 Rfd8 17. Qa4 Bd3 18. Rd1 Rac8 19. Rd2 Rc4 20. Qd1 Rcd4 21. h4 Bc2 22. Qxc2 Rxd2 23. Qxd2 Rxd2 24. Kxd2 b5 25. f3 Qd6+ 26. Ke2 Qg6 27. Ne4 Qxg2+ 28. Nf2 h5 29. Rd1 Qh2 30. Rd4 g6 31. a4 Qc7 32. Kd2 Qa5+ 33. b4 Qxa4 34. Ne4 Qa2+ 35. Kd3 Qb1+ 36. Kd2 Qh1 37. Ng5 Qg2+ 38. Kd3 Qf1+ 39. Kd2 Qf2+ 40. Kd3 Kg7 41. Rf4 f5 42. Rd4 Kf8 43. Rd8+ Ke7 44. Rd4 Qe1 45. Rf4 a5 46. bxa5 b4 47. e4 Qc3+ 0-1

[Event "corr"]
[Site "corr"]
[Date "1985.??.??"]
[Round "?"]
[White "Kuusava, Esa"]
[Black "Kosonen, Markku"]
[Result "0-1"]
[ECO "E52"]
[PlyCount "72"]
[EventDate "1985.09.20"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[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. cxd5 exd5 9. a3 Be7 10. b4 Ne4 11. Qb3 a6 12. Bxe4 dxe4 13. Nd2 Bd6 14. Ncxe4 Bxh2+ 15. Kxh2 Qh4+ 16. Kg1 Bxe4 17. Nxe4 Qxe4 18. f3 Qg6 19. e4 Nd7 20. Bf4 c6 21. Rac1 b5 22. Kf2 Nb6 23. Rc5 Nc4 24. Rh1 Rfd8 25. Qd3 Qf6 26. Be3 Nxe3 27. Kxe3 g6 28. g4 a5 29. g5 Qe7 30. f4 axb4 31. axb4 Ra4 32. Rb1 Rda8 33. Rb3 Ra1 34. Rc2 Rh1 35. Kf2 Raa1 36. Rbb2 Qe6 0-1

[Event "corr"]
[Site "corr"]
[Date "1983.??.??"]
[Round "?"]
[White "Kuhlberg, Goran"]
[Black "Kosonen, Markku"]
[Result "0-1"]
[ECO "E11"]
[PlyCount "46"]
[EventDate "1983.??.??"]
[EventType "tourn (corr)"]
[EventRounds "1"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. d4 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 0-0 6. Nc3 d6 7. e3 Qe7 8. Be2 e5 9. d5 e4 10. Nd4 a6 11. 0-0-0 Rd8 12. h3 c5 13. dxc6 bxc6 14. g4 c5 15. Nf5 Bxf5 16. gxf5 Qe5 17. Bg4 Nc6 18. Rdg1 Nb4 19. f3 exf3 20. Bxf3 d5 21. cxd5 Nfxd5 22. Qg2 Nxc3 23. bxc3 Qxc3+ 0-1

[Event "FIN-Cup3 corr"]
[Site "Finland"]
[Date "1982.??.??"]
[Round "?"]
[White "Arpiainen, Vesa"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "C88"]
[PlyCount "47"]
[EventDate "1982.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "FIN"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[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. d3 Bb7 9. c3 h6 10. Nbd2 Re8 11. d4 exd4 12. cxd4 d5 13. e5 Nh7 14. Nf1 Na5 15. Bc2 Ng5 16. Nxg5 Bxg5 17. f4 Bh4 18. g3 Be7 19. Qd3 Bb4 20. Qh7+ Kf8 21. f5 Ke7 22. Qxg7 Bxe1 23. Bxh6 Kd7 24. Bg5 1-0

[Event "FIN-Cup3 corr"]
[Site "Finland"]
[Date "1982.??.??"]
[Round "?"]
[White "Kosonen, Markku"]
[Black "Heikkinen, Viljo"]
[Result "1-0"]
[ECO "E30"]
[PlyCount "57"]
[EventDate "1982.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "FIN"]
[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. Bg5 h6 5. Bh4 c5 6. d5 Bxc3+ 7. bxc3 e5 8. d6 Nc6 9. Qc2 b6 10. e3 0-0 11. Be2 Re8 12. Rd1 g5 13. Bg3 Re6 14. h4 Ne8 15. hxg5 Qxg5 16. Rh4 Qg7 17. Bf3 Bb7 18. Bg4 Rg6 19. Bh5 Rxg3 20. fxg3 Qxg3+ 21. Qf2 Qxf2+ 22. Kxf2 Nf6 23. Ne2 Nxh5 24. Rxh5 Ba6 25. Rxh6 Bxc4 26. Rdh1 Kg7 27. Rh7+ Kf6 28. R1h6+ Kg5 29. Ng3 1-0

[Event "FIN-Cup3 corr"]
[Site "Finland"]
[Date "1982.??.??"]
[Round "?"]
[White "Kosonen, Markku"]
[Black "Viitanen, Yrjo"]
[Result "1-0"]
[ECO "E31"]
[PlyCount "135"]
[EventDate "1982.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "FIN"]
[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. Bg5 c5 5. d5 h6 6. Bh4 exd5 7. cxd5 d6 8. e3 g5 9. Bg3 Ne4 10. Qc2 Bf5 11. Bd3 Bxc3+ 12. bxc3 Nxg3 13. hxg3 Bxd3 14. Qxd3 Nd7 15. Nf3 Qf6 16. Rb1 0-0-0 17. 0-0 Nb6 18. c4 Kb8 19. Rb5 Rd7 20. Rfb1 h5 21. e4 h4 22. Nd2 hxg3 23. Qxg3 Qh6 24. Kf1 f5 25. e5 f4 26. Qg4 Qg7 27. Qe6 Nc8 28. Qf6 Qh7 29. R5b3 Rf7 30. Rh3 Rxf6 31. Rxh7 Rxh7 32. exf6 Nb6 33. Re1 Rh1+ 34. Ke2 Rh6 35. Kf3 Rxf6 36. Kg4 Rf8 37. Kxg5 Nd7 38. Nf3 a6 39. Nh4 Ne5 40. Re4 Nd3 41. Ng6 Rg8 42. Kf5 b5 43. cxb5 axb5 44. Re6 Kc7 45. Re7+ Kb6 46. Re6 Rd8 47. Kf6 c4 48. Ke7 Kc7 49. Re2 Ra8 50. Nf8 Rxf8 51. Kxf8 Nb4 52. a3 Nxd5 53. Kf7 Nc3 54. Rb2 Kc6 55. Ke6 Kc5 56. g4 fxg3 57. fxg3 Ne4 58. g4 c3 59. Rg2 Ng5+ 60. Kf5 Nf3 61. Ke4 Ne1 62. Rg1 d5+ 63. Ke3 Nc2+ 64. Kd3 Nxa3 65. g5 Nc4 66. g6 d4 67. g7 Ne5+ 68. Ke4 1-0

[Event "FIN-Cup3 corr"]
[Site "Finland"]
[Date "1982.??.??"]
[Round "?"]
[White "Redsven, Risto"]
[Black "Kosonen, Markku"]
[Result "1-0"]
[ECO "C90"]
[PlyCount "91"]
[EventDate "1982.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "FIN"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[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. d3 d6 9. c3 Na5 10. Bc2 c5 11. Nbd2 Nc6 12. Nf1 Re8 13. Ng3 h6 14. h3 Be6 15. d4 cxd4 16. cxd4 exd4 17. Nxd4 Nxd4 18. Qxd4 Rc8 19. Bb3 d5 20. e5 Nd7 21. Be3 Bc5 22. Qd1 Bxe3 23. Rxe3 Nc5 24. Qd4 Nxb3 25. axb3 Rc6 26. Ne2 Qd7 27. Qd2 Qb7 28. Nd4 Rc5 29. f4 Qc8 30. Rc3 Rxc3 31. Qxc3 Qb7 32. Qc6 Qxc6 33. Nxc6 Ra8 34. Kf2 Kf8 35. Nd4 Bd7 36. Ke3 g5 37. g4 gxf4+ 38. Kxf4 a5 39. Nf5 Ra6 40. Rd1 Bxf5 41. gxf5 Ke7 42. Rxd5 Rb6 43. Rc5 Kd7 44. Ke4 Rb8 45. Kd5 Rb6 46. h4 1-0

