[Event "Stara Zagora Beroe op 4th"]
[Site "Stara Zagora"]
[Date "2016.05.15"]
[Round "5"]
[White "Dimitrov, Dimitar"]
[Black "Kostadinov, Kostadin"]
[Result "1/2-1/2"]
[ECO "C62"]
[WhiteElo "1965"]
[PlyCount "147"]
[EventDate "2016.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. Nxd4 Bd7 6. 0-0 Nxd4 7. Bxd7+ Qxd7 8. Qxd4 c5 9. Qd3 Be7 10. Nc3 Nf6 11. b3 0-0 12. Bb2 a6 13. Rad1 Rfd8 14. h3 Qc6 15. Rfe1 b5 16. Qg3 Ne8 17. Nd5 Bf8 18. f4 Ra7 19. f5 Rad7 20. Qg4 Kh8 21. h4 a5 22. h5 f6 23. Re3 Rf7 24. Rh3 Nc7 25. h6 Nxd5 26. exd5 Qd7 27. hxg7+ Bxg7 28. Qg6 Kg8 29. Rxh7 Qe7 30. Rh3 Kf8 31. Bc3 Re8 32. Re1 Qd8 33. Re6 Rxe6 34. fxe6 Ra7 35. Rf3 Qe8 36. Qxe8+ Kxe8 37. Bxf6 Bxf6 38. Rxf6 a4 39. Rf2 axb3 40. axb3 c4 41. bxc4 bxc4 42. Rf4 Ra1+ 43. Kf2 Rd1 44. Rxc4 Rxd5 45. Rc7 Re5 46. Rc3 Ke7 47. Re3 Rf5+ 48. Ke2 Rg5 49. g3 Rf5 50. Kd3 Rd5+ 51. Kc3 Rc5+ 52. Kd2 Rd5+ 53. Kc1 Rf5 54. Kd2 Rd5+ 55. Ke2 Rf5 56. c4 Ra5 57. Kd3 Ra3+ 58. Kd4 Ra1 59. Kd5 Ra5+ 60. Kd4 Ra1 61. g4 Rd1+ 62. Kc3 Rc1+ 63. Kd4 Rd1+ 64. Ke4 Kxe6 65. Kf4+ Kf6 66. Re4 d5 67. cxd5 Rxd5 68. Ra4 Rd6 69. Rb4 Rc6 70. Rb5 Rc4+ 71. Kg3 Rc1 72. Rf5+ Kg6 73. Re5 Ra1 74. Rb5 1/2-1/2

[Event "Stara Zagora Beroe op 4th"]
[Site "Stara Zagora"]
[Date "2016.05.15"]
[Round "6"]
[White "Kostadinov, Kostadin"]
[Black "Dimitrov, Nikolay Hr"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "53"]
[EventDate "2016.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 g6 4. d4 Bg7 5. h3 0-0 6. Be3 c6 7. Bd3 Qc7 8. Qd2 Rd8 9. Bh6 Bh8 10. Bc4 d5 11. exd5 cxd5 12. Bb3 a6 13. 0-0 e6 14. Ne5 Nc6 15. f4 b5 16. Qe3 b4 17. Na4 Ne4 18. Rac1 f5 19. c4 bxc3 20. Nxc3 Bxe5 21. Nxe4 Qb6 22. fxe5 dxe4 23. Kh1 Ne7 24. Rc5 Bb7 25. Rfc1 Bd5 26. Qg5 Nc8 27. Rc7 1-0

[Event "Stara Zagora Beroe op 4th"]
[Site "Stara Zagora"]
[Date "2016.05.14"]
[Round "1"]
[White "Kostadinov, Kostadin"]
[Black "Kirilov, Ivaylo"]
[Result "0-1"]
[ECO "C54"]
[BlackElo "1861"]
[PlyCount "122"]
[EventDate "2016.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 0-0 7. Bg5 Be6 8. Bxe6 fxe6 9. d4 Bb6 10. Na3 h6 11. Bxf6 Qxf6 12. Nc4 exd4 13. Nxb6 axb6 14. cxd4 Qg6 15. Qe2 Rf4 16. Rfe1 Raf8 17. Kh1 Nxd4 18. Qc4 Nxf3 19. gxf3 Qf7 20. Rac1 c6 21. Rg1 Rxf3 22. Rcf1 b5 23. Qd4 d5 24. Rg2 Qf6 25. e5 Qf4 26. Qxf4 R8xf4 27. Rfg1 g5 28. b3 Rf5 29. h4 Rh3+ 30. Rh2 Rxh2+ 31. Kxh2 Rxf2+ 32. Kh3 Rf3+ 33. Kg4 Rf4+ 34. Kh5 Rxh4+ 35. Kg6 Rf4 36. Kxh6 Rf5 37. Kg6 Kf8 38. Rh1 d4 39. Rh7 Ke8 40. b4 d3 41. Rh8+ Ke7 42. Rh7+ Kd8 43. Rh8+ Kc7 44. Rh7+ Kb6 45. Rd7 Rxe5 46. Rxd3 Re4 47. a3 g4 48. Kg5 c5 49. Rd6+ Kc7 50. bxc5 g3 51. Rd3 g2 52. Rg3 Re2 53. Kf6 Kc6 54. Rg5 e5 55. Ke6 Kxc5 56. Kd7 Kd4 57. Kc7 Rb2 58. Kxb7 e4 59. Kc6 e3 60. Rg8 e2 61. Rxg2 e1Q 0-1

[Event "Stara Zagora Beroe op 4th"]
[Site "Stara Zagora"]
[Date "2016.05.14"]
[Round "3"]
[White "Kostadinov, Kostadin"]
[Black "Tilev, Emil"]
[Result "1-0"]
[ECO "B30"]
[BlackElo "1176"]
[PlyCount "31"]
[EventDate "2016.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 Nf6 4. e5 Ng8 5. c3 d5 6. exd6 exd6 7. 0-0 Bg4 8. Qb3 Qd7 9. Re1+ Kd8 10. Bxf7 Nf6 11. Ng5 h6 12. Be6 Bxe6 13. Nxe6+ Kc8 14. d4 Qe7 15. Bd2 Qd7 16. dxc5 1-0

[Event "Stara Zagora Beroe op 4th"]
[Site "Stara Zagora"]
[Date "2016.05.14"]
[Round "2"]
[White "Stoyanov, Nikola"]
[Black "Kostadinov, Kostadin"]
[Result "0-1"]
[ECO "D03"]
[PlyCount "98"]
[EventDate "2016.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BUL"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 Be7 4. Nc3 d5 5. Qd2 h6 6. Bxf6 Bxf6 7. 0-0-0 0-0 8. g3 b6 9. Bg2 c5 10. e3 Nc6 11. Rhg1 a6 12. h4 Bd7 13. dxc5 bxc5 14. e4 d4 15. Ne2 e5 16. g4 Bxh4 17. Nxh4 Qxh4 18. Bf3 Qxf2 19. Rgf1 Qh4 20. Rh1 Qg5 21. Qxg5 hxg5 22. Rh2 f6 23. Ng3 Rfb8 24. Rdh1 Kf7 25. Nf5 Bxf5 26. gxf5 Rb6 27. Bh5+ Ke7 28. Bg6 Kd6 29. Rh7 Rb7 30. R1h6 Rab8 31. Bh5 gxh6 32. Rxb7 Rxb7 33. Kd2 c4 34. Ke2 Nb4 35. c3 d3+ 36. Ke3 Nc2+ 37. Kd2 Rxb2 38. Bd1 Rxa2 39. Bxc2 Rxc2+ 40. Ke3 Re2+ 41. Kf3 a5 42. Kg3 h5 43. Kh3 a4 44. Kg3 a3 45. Kf3 a2 46. Kg3 a1Q 47. Kf3 Qf1+ 48. Kg3 Rg2+ 49. Kh3 Qh1# 0-1

[Event "Dimitrovgrad op 1st"]
[Site "Dimitrovgrad"]
[Date "2009.09.06"]
[Round "5"]
[White "Serafimov, Dimitar"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2210"]
[PlyCount "69"]
[EventDate "2009.09.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 Bf5 5. Bg2 c6 6. Nxd5 cxd5 7. Qb3 e6 8. Qxb7 Nd7 9. Nf3 Bc5 10. 0-0 0-0 11. d4 Bb6 12. Bf4 Be4 13. Rfd1 Rc8 14. Rac1 Rxc1 15. Bxc1 Qc8 16. Qxc8 Rxc8 17. e3 Rc2 18. Ne1 Rc8 19. Bd2 Bxg2 20. Kxg2 Kf8 21. Nd3 f6 22. Bc3 Kf7 23. h4 h6 24. h5 Rc4 25. g4 Rc8 26. f4 g6 27. hxg6+ Kxg6 28. Kf3 h5 29. gxh5+ Kxh5 30. f5 Nf8 31. Nf4+ Kg5 32. fxe6 Re8 33. Rg1+ Kf5 34. Rg8 a5 35. e7 1-0

[Event "Dimitrovgrad op 1st"]
[Site "Dimitrovgrad"]
[Date "2009.09.05"]
[Round "4"]
[White "Kostadinov, Kostadin"]
[Black "Valkov, Vladimir"]
[Result "1/2-1/2"]
[ECO "C53"]
[BlackElo "2082"]
[PlyCount "101"]
[EventDate "2009.09.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. c3 Qe7 6. d4 Bb6 7. Bg5 d6 8. a4 a5 9. d5 Nd8 10. Bd3 h6 11. Be3 Bxe3 12. fxe3 Bg4 13. b4 axb4 14. cxb4 Nxd5 15. Bb5+ c6 16. Qxd5 cxb5 17. Qxb5+ Bd7 18. Qd3 Rxa4 19. Rxa4 Bxa4 20. Nc3 Bb3 21. Nb5 Be6 22. Nxd6+ Kf8 23. Nxe5 Kg8 24. Rd1 Kh7 25. b5 Qg5 26. Nf3 Qc5 27. Nd4 g6 28. Nxe6 Nxe6 29. Nxf7 Rf8 30. Qd7 Qxe3+ 31. Kh1 Ng7 32. e5 Qf4 33. e6 Qf5 34. Qxb7 Qxe6 35. Rf1 Re8 36. h3 Re7 37. Qf3 Nf5 38. Nd8 Qd6 39. Rd1 Qb4 40. Nc6 Re1+ 41. Rxe1 Qxe1+ 42. Kh2 h5 43. g3 Qb1 44. Qe2 Qb3 45. Qf2 Qxb5 46. g4 hxg4 47. hxg4 Qxc6 48. gxf5 Qd6+ 49. Kg2 Qd5+ 50. Kg3 Qd6+ 51. Kg4 1/2-1/2

[Event "BUL-chT"]
[Site "Pamporovo"]
[Date "2001.10.07"]
[Round "6"]
[White "Yordanov, Nikolay"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "C57"]
[PlyCount "40"]
[EventDate "2001.10.03"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "CBM 084 Extra"]
[Source "ChessBase"]
[SourceDate "2001.10.26"]
[SourceVersion "1"]
[SourceVersionDate "2001.10.26"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nf3 Nc6 4. Ng5 Bc5 5. Bxf7+ Ke7 6. Bb3 Rf8 7. d3 h6 8. Nf3 d6 9. c3 Bg4 10. Be3 Bb6 11. Nbd2 Qe8 12. h3 Bh5 13. g4 Bf7 14. Qe2 Kd7 15. Nc4 Rd8 16. Nxb6+ cxb6 17. g5 hxg5 18. Bxf7 Qxf7 19. Nxg5 Qh5 20. Qxh5 Nxh5 1-0

[Event "BUL-chT"]
[Site "Pamporovo"]
[Date "2001.10.06"]
[Round "5"]
[White "Ilchev, Dimitar"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2028"]
[PlyCount "70"]
[EventDate "2001.10.03"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "CBM 084 Extra"]
[Source "ChessBase"]
[SourceDate "2001.10.26"]
[SourceVersion "1"]
[SourceVersionDate "2001.10.26"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. g3 d5 5. cxd5 exd5 6. d4 c4 7. Bg2 Nc6 8. 0-0 Be7 9. b3 Bb4 10. Qc2 Bxc3 11. Qxc3 b5 12. bxc4 bxc4 13. Bg5 Be6 14. Rab1 Ne4 15. Qc1 Nxg5 16. Nxg5 Nxd4 17. Re1 0-0 18. Qd2 Nc6 19. Red1 Ne7 20. Nf3 Rb8 21. Nd4 Qc7 22. Qe3 Qc5 23. Qc3 Rb6 24. Rb2 Rfb8 25. Rbd2 Rb1 26. h4 Qb4 27. Qe3 c3 28. Rd3 Rxd1+ 29. Rxd1 Rb6 30. Rc1 Nc6 31. Nxe6 fxe6 32. Qxe6+ Kf8 33. Bxd5 Nd8 34. Qg8+ Ke7 35. Qxg7+ Kd6 1-0

[Event "BUL-chT"]
[Site "Pamporovo"]
[Date "2001.10.04"]
[Round "2"]
[White "Kostadinov, Kostadin"]
[Black "Panteleev, Petar"]
[Result "0-1"]
[ECO "E61"]
[BlackElo "2245"]
[PlyCount "48"]
[EventDate "2001.10.03"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "CBM 084 Extra"]
[Source "ChessBase"]
[SourceDate "2001.10.26"]
[SourceVersion "1"]
[SourceVersionDate "2001.10.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 Bg7 5. Nf3 0-0 6. Bd3 cxd4 7. exd4 d5 8. cxd5 Nxd5 9. a3 Nc6 10. Be4 Nf6 11. Bc2 Bg4 12. d5 Bxf3 13. gxf3 Ne5 14. Be4 Qd7 15. Be3 Nc4 16. Qe2 Rac8 17. 0-0 Nxb2 18. Rab1 Rxc3 19. Rxb2 Rxa3 20. Qb5 Qh3 21. Qxb7 Nxe4 22. fxe4 Be5 23. f3 Rxe3 24. Qxe7 Bxb2 0-1

[Event "BUL-chT"]
[Site "Pamporovo"]
[Date "2001.10.04"]
[Round "3"]
[White "Kostadinov, Kostadin"]
[Black "Radev, Radoslav"]
[Result "0-1"]
[ECO "E14"]
[PlyCount "60"]
[EventDate "2001.10.03"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "CBM 084 Extra"]
[Source "ChessBase"]
[SourceDate "2001.10.26"]
[SourceVersion "1"]
[SourceVersionDate "2001.10.26"]
[SourceQuality "1"]

1. d4 c5 2. e3 e6 3. c4 Nf6 4. Nc3 b6 5. Nf3 Bb7 6. Be2 d5 7. 0-0 Be7 8. Ne5 0-0 9. b3 Nc6 10. Nxc6 Bxc6 11. Bb2 Qc7 12. Qc2 dxc4 13. Bxc4 Ng4 14. g3 Rfd8 15. dxc5 Ne5 16. Be2 Nf3+ 17. Bxf3 Bxf3 18. Nb5 Qxc5 19. Qxc5 Bxc5 20. Nd4 Be4 21. Rfd1 a6 22. Rac1 e5 23. b4 Bxb4 24. Nb3 Rxd1+ 25. Rxd1 f6 26. a3 Bf8 27. Rd7 Rc8 28. Nd2 Bf5 29. Rd5 Rc2 30. e4 Be6 0-1

[Event "EU-ch corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Del Noce, Roberto"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "C59"]
[PlyCount "79"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[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. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Bd6 11. f4 exf3 12. Nxf3 Qc7 13. 0-0 0-0 14. d4 c5 15. Nc3 a6 16. Kh1 Bb7 17. Be3 Rad8 18. Bg1 Rfe8 19. Re1 Nc6 20. d5 Nb4 21. a3 Nbxd5 22. Nxd5 Nxd5 23. Bxa6 Nc3 24. Qd3 Rxe1 25. Rxe1 Bg3 26. hxg3 Rxd3 27. Re8+ Kh7 28. Bxd3+ g6 29. bxc3 Qxg3 30. Re7 Bd5 31. Bxc5 Kg7 32. Be4 Be6 33. Bc6 g5 34. Bd4+ Kg6 35. Be8 Bd5 36. Bxf7+ Bxf7 37. Ne5+ Kf5 38. Nxf7 Kg6 39. a4 Qf4 40. Ne5+ 1-0

[Event "EU-ch corr"]
[Site "ICCF corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Kuznetsov, Vladlen Georgievich"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "D31"]
[PlyCount "57"]
[EventDate "1992.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. a4 Bb4 6. e3 b5 7. Bd2 Qb6 8. Ne5 Nd7 9. axb5 Nxe5 10. dxe5 cxb5 11. Ne4 Be7 12. Qg4 Kf8 13. Ba5 Qb7 14. Be2 Bd7 15. Bf3 Bc6 16. Nd6 Bxf3 17. gxf3 Qc6 18. Rd1 h5 19. Qf4 Nh6 20. Rg1 Nf5 21. e4 Nh6 22. Rg6 Rh7 23. Rxe6 g5 24. Rxh6 gxf4 25. Rxh7 Kg8 26. Rxh5 Qa6 27. Nf5 Re8 28. Ke2 Qg6 29. Nxe7+ 1-0

[Event "corr"]
[Site "corr"]
[Date "1992.??.??"]
[Round "?"]
[White "Nocci, Roberto"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "C59"]
[PlyCount "79"]
[EventDate "1988.10.01"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Bd6 11. f4 exf3 12. Nxf3 Qc7 13. 0-0 0-0 14. d4 c5 15. Nc3 a6 16. Kh1 Bb7 17. Be3 Rad8 18. Bg1 Rfe8 19. Re1 Nc6 20. d5 Nb4 21. a3 Nbxd5 22. Nxd5 Nxd5 23. Bxa6 Nc3 24. Qd3 Rxe1 25. Rxe1 Bg3 26. hxg3 Rxd3 27. Re8+ Kh7 28. Bxd3+ g6 29. bxc3 Qxg3 30. Re7 Bd5 31. Bxc5 Kg7 32. Be4 Be6 33. Bc6 g5 34. Bd4+ Kg6 35. Be8 Bd5 36. Bxf7+ Bxf7 37. Ne5+ Kf5 38. Nxf7 Kg6 39. a4 Qf4 40. Ne5+ 1-0

[Event "POL corr"]
[Site "Poland"]
[Date "1991.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Raedeker, Bernd"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "46"]
[EventDate "1991.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 g6 5. Be2 Bg7 6. 0-0 0-0 7. h3 c5 8. dxc5 Nb4 9. Na3 N4a6 10. c6 Nxc6 11. Bxa6 Qxd1 12. Rxd1 bxa6 13. c3 Rb8 14. Nd2 Rd8 15. Re1 a5 16. Nb3 Rd5 17. Nc2 a4 18. Nbd4 Nxd4 19. cxd4 Bf5 20. Bf4 Rxb2 21. Ne3 Rxd4 22. Nxf5 Rxf4 23. Nxe7+ Kf8 0-1

[Event "BUL-ch corr"]
[Site "Bulgaria"]
[Date "1989.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Petrov, Valentin"]
[Result "1-0"]
[ECO "B97"]
[PlyCount "63"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "BUL"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Nb3 Nbd7 9. Qf3 Qc7 10. 0-0-0 b5 11. Bd3 b4 12. Ne2 Bb7 13. Kb1 Be7 14. g4 a5 15. Bxf6 Bxf6 16. Bb5 Rd8 17. Ng3 Qb6 18. Bxd7+ Rxd7 19. Nh5 a4 20. Nxf6+ gxf6 21. Nd4 h5 22. Rhe1 Rc7 23. g5 f5 24. g6 Bxe4 25. Rxe4 fxe4 26. Qxe4 0-0 27. gxf7+ Rfxf7 28. Nxe6 Rce7 29. Qa8+ Kh7 30. Ng5+ Kg7 31. Nxf7 Rxf7 32. Qxa4 1-0

[Event "EU-chT4 qual 3-01 corr"]
[Site "ICCF corr"]
[Date "1988.??.??"]
[Round "?"]
[White "De Almeida, Manuel Camejo"]
[Black "Kostadinov, Kostadin"]
[Result "1/2-1/2"]
[ECO "B98"]
[PlyCount "60"]
[EventDate "1988.??.??"]
[EventType "team (corr)"]
[EventRounds "11"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qe2 Be7 8. f4 h6 9. Bh4 Nxe4 10. Bxe7 Nxc3 11. Qc4 Kxe7 12. Qxc3 Re8 13. 0-0-0 Kf8 14. g4 Qf6 15. Qd2 e5 16. g5 Qxf4 17. Qxf4 exf4 18. gxh6 gxh6 19. Bg2 Ra7 20. Rdf1 Re5 21. Rxf4 Rg5 22. Rhf1 b5 23. Be4 Re7 24. Bf5 Bxf5 25. Nxf5 Re6 26. h4 Rgg6 27. Nd4 Re7 28. h5 Rg5 29. Nf5 Re6 30. Nd4 Re7 1/2-1/2

[Event "olm11 qual GP3 B1 corr"]
[Site "ICCF corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Kahn, Manfred"]
[Result "0-1"]
[ECO "C18"]
[PlyCount "84"]
[EventDate "1987.??.??"]
[EventType "team (corr)"]
[EventRounds "9"]
[SourceTitle "Myers"]
[Source "Myers"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]
[WhiteTeam "Bulgaria"]
[BlackTeam "DDR"]
[WhiteTeamCountry "BUL"]
[BlackTeamCountry "DDR"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 cxd4 8. Qxg7 Rg8 9. Qxh7 Nbc6 10. f4 Qa5 11. Ne2 dxc3 12. Qd3 Nb4 13. Qd1 Nf5 14. Rb1 Na2 15. g4 Nxc1 16. gxf5 Nxe2 17. Bxe2 Qc5 18. Rf1 exf5 19. Rb5 Qxa3 20. Bf3 Be6 21. Rxb7 Rh8 22. Rf2 Qc5 23. Qb1 Rxh2 24. Qb5+ Qxb5 25. Rxb5 Rxf2 26. Kxf2 a5 27. Bxd5 Bxd5 28. Rxd5 a4 29. Rd1 Ke7 30. Ke3 a3 31. Ra1 Ra4 32. Kd3 Ke6 33. Kxc3 Rxf4 34. Kb3 Re4 35. Kxa3 f4 36. Rf1 Kxe5 37. Kb2 Re2 38. Kc1 Ke4 39. Kd1 f3 40. Rh1 Ke3 41. Rh3 Rd2+ 42. Kc1 Rd7 0-1

[Event "EU-chT4 qual 3-01 corr"]
[Site "ICCF corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Lanz Calavia, Jose Maria"]
[Result "1-0"]
[ECO "B04"]
[PlyCount "105"]
[EventDate "1988.??.??"]
[EventType "team (corr)"]
[EventRounds "11"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. a4 a5 8. Qe2 Nc6 9. Nbd2 dxe5 10. dxe5 0-0 11. h3 Be6 12. Bxe6 fxe6 13. 0-0 Nd4 14. Nxd4 Qxd4 15. Re1 Rf5 16. Nf3 Qc4 17. b3 Qxe2 18. Rxe2 Rd8 19. Bb2 c5 20. Rae1 Na8 21. Rd2 Rff8 22. Red1 Rxd2 23. Rxd2 Nb6 24. c4 Bh6 25. Rd1 Kf7 26. Kf1 Rc8 27. Bc3 Ra8 28. Ke2 Re8 29. h4 Nd7 30. h5 b6 31. Rh1 Kg7 32. hxg6 Kxg6 33. Nh4+ Kf7 34. f4 Nf8 35. g4 Rd8 36. Ng2 Kg6 37. Rh5 Bg7 38. f5+ Kf7 39. Nf4 exf5 40. e6+ Nxe6 41. Nxe6 Kxe6 42. gxf5+ Kf7 43. Rxh7 Rg8 44. Kf3 Kf8 45. Bxg7+ Rxg7 46. Rh6 Rg1 47. Rxb6 Rb1 48. Rb5 Kf7 49. Rxc5 e6 50. fxe6+ Kxe6 51. Rh5 Kd7 52. Ke4 Kc7 53. Kd5 1-0

[Event "EU-chT4 qual 3-01 corr"]
[Site "ICCF corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Ludgate, Alan Templeton"]
[Black "Kostadinov, Kostadin"]
[Result "1/2-1/2"]
[ECO "A29"]
[PlyCount "65"]
[EventDate "1988.??.??"]
[EventType "team (corr)"]
[EventRounds "11"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nb6 7. 0-0 Be7 8. b3 0-0 9. Bb2 Be6 10. Rc1 f5 11. d3 Qd7 12. Nb5 Bf6 13. d4 e4 14. Ne5 Nxe5 15. dxe5 Bg5 16. Rc5 c6 17. Nd6 Nd5 18. Ba3 Rfd8 19. Rc2 g6 20. Re1 Qg7 21. Qd4 Rd7 22. e3 h5 23. f3 exf3 24. Bxf3 Ne7 25. e4 f4 26. Bc1 Rf8 27. Qc3 Bh6 28. gxf4 Kh8 29. f5 gxf5+ 30. Rg2 Qh7 31. exf5 Nxf5 32. Nxf5 Bxc1 33. Nh4 1/2-1/2

[Event "EU-ch corr"]
[Site "ICCF corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Mueller, Gerhard"]
[Black "Kostadinov, Kostadin"]
[Result "0-1"]
[ECO "D00"]
[PlyCount "48"]
[EventDate "1988.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Bf5 3. f3 Bg6 4. e4 e6 5. Bd3 Nc6 6. Be3 Nf6 7. a3 Be7 8. Nge2 dxe4 9. Nxe4 0-0 10. Nxf6+ Bxf6 11. Bxg6 hxg6 12. 0-0 Qd7 13. c3 Rfd8 14. Qc2 e5 15. Rad1 exd4 16. Nxd4 Na5 17. c4 c5 18. Nb5 Qe6 19. Bxc5 Rxd1 20. Rxd1 Nxc4 21. Nc7 Qc8 22. Nxa8 Ne3 23. Qa4 Qxc5 24. b4 Qc3 0-1

[Event "BUL-ch corr"]
[Site "Bulgaria"]
[Date "1987.??.??"]
[Round "?"]
[White "Bojtsik"]
[Black "Kostadinov, Kostadin"]
[Result "0-1"]
[ECO "A43"]
[PlyCount "92"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "BUL"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c5 6. d5 0-0 7. e5 Ne8 8. Be3 Bg4 9. Be2 Nd7 10. e6 fxe6 11. dxe6 Bxc3+ 12. bxc3 Ndf6 13. Ng5 Bxe2 14. Qxe2 Qc8 15. 0-0 Ng7 16. Bd2 h6 17. Nf7 Kh7 18. f5 gxf5 19. Nxh6 Qxe6 20. Qxe6 Nxe6 21. Nxf5 Ne4 22. Be1 Nc7 23. c4 e6 24. Ng3 Rxf1+ 25. Kxf1 Nf6 26. h3 Rf8 27. Kg1 Nfe8 28. Bd2 Kg6 29. Re1 e5 30. Ne4 Ne6 31. c3 Nf6 32. Nxf6 Rxf6 33. Re4 Nf8 34. h4 Kf5 35. Re3 Nd7 36. Kh2 Nb6 37. Rf3+ Ke6 38. Rg3 Nxc4 39. Bg5 Rf7 40. h5 e4 41. h6 d5 42. Bh4 Ne5 43. Rg8 Rh7 44. Bg5 d4 45. cxd4 cxd4 46. Kg3 e3 0-1

[Event "olm11 qual GP3 B1 corr"]
[Site "ICCF corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Hebert, Jean"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "D31"]
[PlyCount "88"]
[EventDate "1987.??.??"]
[EventType "team (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nc3 c6 4. Nf3 dxc4 5. a4 Bb4 6. e3 b5 7. Bd2 Qb6 8. Ne5 Nd7 9. axb5 Nxe5 10. dxe5 cxb5 11. Ne4 Be7 12. Qg4 Kf8 13. Qf4 a5 14. Be2 Bb7 15. Bc3 Nh6 16. Bd4 Qc7 17. g4 a4 18. 0-0 Ng8 19. Bf3 g5 20. Qg3 Rd8 21. Qg2 Ba6 22. Nd6 h5 23. gxh5 Nh6 24. b3 cxb3 25. Rac1 Qa5 26. Rc6 a3 27. Bb6 Qa4 28. Bxd8 Bxd8 29. Bd1 a2 30. Bxb3 a1Q 31. Bxa4 Qxa4 32. Rcc1 Qh4 33. Ra1 Ng4 34. Rxa6 Qxh5 35. Ra8 Kg7 36. h3 Nxe5 37. f4 Nc4 38. Nxc4 bxc4 39. fxg5 Rf8 40. g6 Qxg6 41. Qxg6+ Kxg6 42. Rf4 f5 43. Rxc4 Be7 44. Rxf8 Bxf8 1-0

[Event "EU-ch34 corr"]
[Site "ICCF corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Klompus, Grigory Yakovlevich"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2424"]
[BlackElo "2163"]
[PlyCount "55"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 b6 7. Re1 Bb7 8. Bf1 c5 9. d5 Na6 10. Bf4 Nc7 11. Qd2 a6 12. a4 Qd7 13. Bh6 b5 14. Bxg7 Kxg7 15. Qd3 b4 16. Nb1 a5 17. Nbd2 Nh5 18. c4 e5 19. dxe6 fxe6 20. Nb3 Qc6 21. Rad1 Rfd8 22. e5 d5 23. Qe3 dxc4 24. Rxd8 cxb3 25. Rd6 Qxa4 26. Ng5 Qe8 27. g4 Nd5 28. Nxe6+ 1-0

[Event "EU-ch M corr"]
[Site "ICCF corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Krivun, Nikolai Minovich"]
[Result "1-0"]
[ECO "B67"]
[PlyCount "65"]
[EventDate "1975.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 b5 10. Bxf6 gxf6 11. f5 Nxd4 12. Qxd4 Bh6+ 13. Kb1 Bf4 14. Ne2 Be5 15. Qd2 exf5 16. exf5 Bxf5 17. Nf4 Qb6 18. Bd3 Bg6 19. Rhf1 Rc8 20. Qe2 Kf8 21. h4 Qc5 22. h5 Bxf4 23. hxg6 Be5 24. gxf7 Kxf7 25. Be4 Qb4 26. Bd5+ Ke7 27. Bb3 Kd8 28. Rd5 Rc5 29. c3 Qa5 30. Rxc5 dxc5 31. Qg4 Qb6 32. Rd1+ Bd6 33. Qg3 1-0

[Event "corr"]
[Site "corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Pakrov"]
[Result "0-1"]
[ECO "B05"]
[PlyCount "73"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. h3 Bh5 8. c4 Nb6 9. Nc3 0-0 10. Be3 d5 11. c5 Bxf3 12. gxf3 Nc8 13. f4 f5 14. b4 c6 15. Bd3 b6 16. a3 Kh8 17. Kh2 Bh4 18. Ne2 Ne7 19. Ng1 Ng6 20. Qa4 b5 21. Qb3 a6 22. a4 Nd7 23. Ra3 Rg8 24. Rfa1 Rc8 25. axb5 axb5 26. Ra7 Ngf8 27. Nf3 h6 28. Rb7 g5 29. Nxh4 gxf4 30. Nf3 fxe3 31. fxe3 Ng6 32. Raa7 Ngf8 33. Qa2 Qe8 34. Nh4 Qh5 35. Qf2 Rg7 36. Be2 Qg5 37. Ng2 0-1

[Event "olm11 qual GP3 B1 corr"]
[Site "ICCF corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Poulsen, Allan"]
[Result "1/2-1/2"]
[ECO "B97"]
[PlyCount "54"]
[EventDate "1987.??.??"]
[EventType "team (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Nb3 Be7 9. Qf3 Nbd7 10. 0-0-0 Qc7 11. Bd3 b5 12. a3 Bb7 13. Rhe1 0-0-0 14. Qf1 Nc5 15. Nxc5 dxc5 16. e5 c4 17. Be2 Nd5 18. Bxe7 Qxe7 19. Nxd5 Rxd5 20. Bf3 Rxd1+ 21. Rxd1 Rd8 22. Rxd8+ Qxd8 23. Qf2 Bxf3 24. Qxf3 Qd4 25. h4 Qg1+ 26. Kd2 Kc7 27. g3 Qd4+ 1/2-1/2

[Event "EU-ch34 corr"]
[Site "ICCF corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Repp, Heinrich"]
[Result "1-0"]
[ECO "C63"]
[WhiteElo "2424"]
[BlackElo "2424"]
[PlyCount "149"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[SourceTitle "Corr 2011"]
[Source "ChessBase"]
[SourceDate "2010.08.31"]
[SourceVersion "1"]
[SourceVersionDate "2010.08.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 fxe4 5. Nxe4 d5 6. Nxe5 dxe4 7. Nxc6 Qd5 8. c4 Qd6 9. Nxa7+ Bd7 10. Bxd7+ Qxd7 11. Qh5+ g6 12. Qe5+ Kf7 13. Nb5 c6 14. Qd4 Qe7 15. Qxh8 Nf6 16. b3 Rd8 17. Bb2 Bg7 18. Ba3 Qd7 19. Nd6+ Ke6 20. Qxd8 Qxd8 21. Nxb7 Qc7 22. Nc5+ Kf7 23. Bb2 Qd6 24. b4 Ng4 25. Bxg7 Kxg7 26. Rd1 Qe7 27. h3 Ne5 28. Rb1 Nxc4 29. Rc1 Ne5 30. 0-0 Nf3+ 31. Kh1 Qe5 32. gxf3 Qf5 33. Nxe4 Qxf3+ 34. Kg1 Qxe4 35. a3 Qd3 36. Rc3 Qxd2 37. Rfc1 Qg5+ 38. Kf1 Qd5 39. Ke1 Qe4+ 40. Re3 Qh1+ 41. Kd2 Qd5+ 42. Ke2 Qa2+ 43. Kf1 Qd2 44. Rc5 Qd1+ 45. Kg2 Qd4 46. Rec3 Qe4+ 47. Kg3 h5 48. Rxc6 h4+ 49. Kh2 Qe5+ 50. Kg1 Qe1+ 51. Kg2 Qe4+ 52. Kf1 Qb1+ 53. Ke2 Qa2+ 54. Ke3 Qa1 55. Kd3 Qd1+ 56. Kc4 Qe2+ 57. Kb3 Qd1+ 58. Rc2 Qb1+ 59. Ka4 Qf1 60. R2c3 Qd1+ 61. Ka5 Qd8+ 62. Rc7+ Kf6 63. b5 Qa8+ 64. Kb4 Qe4+ 65. R7c4 Qe7+ 66. Kb3 Kg5 67. a4 Kh5 68. a5 Qd7 69. Kb4 Qe7+ 70. Rc5+ g5 71. b6 Qe4+ 72. Kb5 Qe2+ 73. R3c4 Qe8+ 74. Rc6 Qb8 75. Rc8 1-0

[Event "BUL-ch corr"]
[Site "Bulgaria"]
[Date "1987.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Uvanov"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "59"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "BUL"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Bg4 8. Re1 Be7 9. c4 Nf6 10. Nc3 Bxf3 11. Qxf3 Nxd4 12. Qd1 Ne6 13. cxd5 Nxd5 14. Bb5+ c6 15. Nxd5 cxb5 16. Bf4 Nxf4 17. Rxe7+ Kf8 18. Re5 Qd6 19. Qd4 Ne6 20. Qe3 h5 21. Re1 Kg8 22. f4 Rh6 23. h3 a6 24. Rd1 Kh8 25. Qf3 h4 26. Rh5 Nd8 27. Ne3 Qg6 28. Rhd5 Qb6 29. Kh1 Ne6 30. Ng4 1-0

[Event "EU-ch34 corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Krivun, Nikolai Minovich"]
[Result "1-0"]
[ECO "B67"]
[PlyCount "67"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[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 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 b5 10. Bxf6 gxf6 11. f5 Nxd4 12. Qxd4 Bh6+ 13. Kb1 Bf4 14. Ne2 Be5 15. Qd2 exf5 16. exf5 Bxf5 17. Nf4 Qb6 18. Bd3 Bg6 19. Rhf1 Rc8 20. Qe2 Kf8 21. h4 Qc5 22. h5 Bxf4 23. hxg6 Be5 24. gxf7 Kxf7 25. Be4 Qb4 26. Bd5+ Ke7 27. Bb3 Kd8 28. Rd5 Rc5 29. c3 Qa5 30. Rxc5 dxc5 31. Qg4 Qb6 32. Rd1+ Bd6 33. Qg3 Kc7 34. Qg7+ 1-0

[Event "EU-ch34 corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Normantas, Valentinas P"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "B38"]
[PlyCount "51"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[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 0-0 8. Be2 d6 9. 0-0 Bd7 10. Rc1 Nxd4 11. Bxd4 Bc6 12. Qd3 Nd7 13. Bxg7 Kxg7 14. b4 Kg8 15. Qe3 b6 16. a3 a5 17. Nd5 Re8 18. Rfd1 Qb8 19. h4 Qb7 20. h5 axb4 21. axb4 Nf6 22. h6 Nd7 23. f4 f6 24. Bf3 Kf8 25. e5 e6 26. b5 1-0

[Event "BUL-13ch corr"]
[Site "Bulgaria"]
[Date "1981.??.??"]
[Round "?"]
[White "Goldjevski, VT."]
[Black "Kostadinov, Kostadin"]
[Result "0-1"]
[ECO "A89"]
[PlyCount "40"]
[EventDate "1981.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "BUL"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 g6 2. c4 f5 3. g3 Nf6 4. Bg2 Bg7 5. Nf3 0-0 6. 0-0 d6 7. Nc3 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. e4 f4 11. b4 g5 12. Re1 a6 13. Bb2 Qe8 14. Na4 Ng4 15. Nc5 Qh5 16. h3 f3 17. Bf1 Nh2 18. Bg2 Bxh3 19. Bh1 Bg2 20. Bc1 Nf1 0-1

[Event "BUL-13ch corr"]
[Site "Bulgaria"]
[Date "1981.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Martschev, G."]
[Result "1-0"]
[ECO "C82"]
[PlyCount "67"]
[EventDate "1981.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "BUL"]
[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 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Bc5 10. Nbd2 0-0 11. Bc2 f5 12. Nb3 Bb6 13. Nfd4 Nxd4 14. Nxd4 Bxd4 15. Qxd4 c5 16. Qd1 f4 17. f3 Ng5 18. a4 b4 19. cxb4 cxb4 20. Qd4 Bf5 21. Bb3 Ne6 22. Qxd5 Qb6+ 23. Kh1 Rad8 24. a5 Qc7 25. Qc4 Qxe5 26. Bxf4 Qxb2 27. Rae1 Rc8 28. Qxb4 Qc3 29. Bd6 Qxb4 30. Bxb4 Rb8 31. Bxe6+ Bxe6 32. Bxf8 Bc4 33. Bc5 Rc8 34. Bb6 1-0

[Event "BUL-13ch corr"]
[Site "Bulgaria"]
[Date "1981.??.??"]
[Round "?"]
[White "Tabakov, Martin Mateev"]
[Black "Kostadinov, Kostadin"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "70"]
[EventDate "1981.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "BUL"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. f4 h6 6. Bh4 c5 7. e5 Nh5 8. dxc5 Nxf4 9. exd6 g5 10. Bf2 0-0 11. Qd2 exd6 12. 0-0-0 Bg4 13. Nf3 Nc6 14. h4 Ne5 15. hxg5 hxg5 16. Qe3 Re8 17. Rxd6 Nxf3 18. Ne4 Qa5 19. gxf3 Qxa2 20. Rd4 Ne6 21. Rb4 Qa1+ 22. Kd2 Rad8+ 23. Nd6 Nxc5 24. Bd3 Qxh1 25. Nxe8 Nxd3 26. cxd3 Bf5 27. Rb3 Be6 28. Nxg7 Bxb3 29. Ne8 Qd1+ 30. Kc3 Rc8+ 31. Kd4 Qc1 32. Qxc1 Rxc1 33. Ke4 Rc2 34. Bxa7 Re2+ 35. Be3 Bd5+ 0-1

[Event "EU-ch M corr"]
[Site "ICCF corr"]
[Date "1978.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Flum, Gerhard"]
[Result "1-0"]
[ECO "B78"]
[PlyCount "49"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. Bb3 Rc8 11. h4 h5 12. 0-0-0 Ne5 13. Kb1 a6 14. a4 Nc4 15. Bxc4 Rxc4 16. b3 Rc8 17. Ndb5 Be6 18. Bd4 Ne8 19. g4 Bxd4 20. Nxd4 Qc7 21. Nce2 Nf6 22. gxh5 Nxh5 23. Qh6 Bd7 24. Rdg1 e5 25. Rg5 1-0

[Event "olm8 fin B5 corr"]
[Site "ICCF corr"]
[Date "1977.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Brat, Vaclav"]
[Result "1-0"]
[ECO "C67"]
[PlyCount "101"]
[EventDate "1977.??.??"]
[EventType "team (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Be7 6. Qe2 Nd6 7. Bxc6 bxc6 8. dxe5 Nb7 9. c4 0-0 10. Nc3 f6 11. Re1 fxe5 12. Nxe5 Bf6 13. Bf4 Bxe5 14. Bxe5 d6 15. Bd4 Bf5 16. Qd2 Qd7 17. b3 Qf7 18. Ne2 Rae8 19. Ng3 Bg6 20. Rxe8 Rxe8 21. Re1 c5 22. Rxe8+ Qxe8 23. Bc3 Qf7 24. Qg5 h6 25. Qg4 Nd8 26. Qc8 Qe7 27. h4 Kh7 28. Nf5 Bxf5 29. Qxf5+ Kg8 30. Qd5+ Kh7 31. g3 Qf7 32. h5 Ne6 33. f4 Kg8 34. Ba5 Nd4 35. Bxc7 Qxd5 36. cxd5 Nb5 37. Ba5 Kf7 38. Kf2 Nd4 39. g4 g6 40. hxg6+ Kxg6 41. Bc3 Nb5 42. f5+ Kg5 43. Bd2+ Kf6 44. Bxh6 Nc3 45. Kf3 Nxa2 46. Kf4 Nc3 47. g5+ Kf7 48. g6+ Kg8 49. f6 Nxd5+ 50. Kg5 Nxf6 51. Kxf6 1-0

[Event "olm8 fin B5 corr"]
[Site "ICCF corr"]
[Date "1977.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Kretschmar, Heinz"]
[Result "1/2-1/2"]
[ECO "C65"]
[PlyCount "111"]
[EventDate "1977.??.??"]
[EventType "team (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 Nf6 5. 0-0 0-0 6. d4 Bb6 7. Bg5 h6 8. Bh4 d6 9. Bxc6 bxc6 10. dxe5 dxe5 11. Qa4 Qd6 12. Nbd2 Nd7 13. Bg3 Nc5 14. Qa3 f6 15. b4 Ne6 16. Qb3 Kh7 17. Nc4 Qe7 18. Nfd2 a5 19. Nxa5 Bxa5 20. bxa5 Ba6 21. Rfd1 Rab8 22. Qc2 Qa3 23. Nb3 c5 24. Rab1 c4 25. Nd2 Nc5 26. f3 Nd3 27. Bf2 Rbd8 28. Nf1 Nxf2 29. Kxf2 Rd3 30. Rxd3 cxd3 31. Qb2 Qxa5 32. Ne3 c5 33. Ke1 Rf7 34. Kd2 Rb7 35. Qa1 Rd7 36. Qb2 Rd4 37. Qb6 Qxb6 38. Rxb6 Ra4 39. Rb2 c4 40. Nd5 Ra3 41. Kc1 Bc8 42. Rb8 Be6 43. Kb2 Ra7 44. Ne3 Kg6 45. Rb4 Rc7 46. a4 Kf7 47. Kc1 Ke7 48. Nd1 f5 49. exf5 Bxf5 50. Nb2 Be6 51. Kd2 Bd5 52. a5 Kd6 53. h4 Kc5 54. Na4+ Kd6 55. Nb6 Kc5 56. Na4+ 1/2-1/2

[Event "olm8 fin B5 corr"]
[Site "ICCF corr"]
[Date "1977.??.??"]
[Round "?"]
[White "Kostadinov, Kostadin"]
[Black "Marjan, Dusan"]
[Result "1-0"]
[ECO "C72"]
[PlyCount "73"]
[EventDate "1977.??.??"]
[EventType "team (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. 0-0 Bg4 6. h3 h5 7. c4 Qf6 8. Qb3 0-0-0 9. Bxc6 bxc6 10. Nh2 Bd7 11. Qe3 Kb7 12. Nf3 Be7 13. d4 exd4 14. Nxd4 g5 15. Qb3+ Ka8 16. Qa4 Kb7 17. Nb3 Ra8 18. Nc3 g4 19. Nd5 Qg7 20. Nxe7 Nxe7 21. h4 Ng6 22. g3 Ne5 23. c5 Nf3+ 24. Kg2 Qf6 25. Rh1 Rhe8 26. Bf4 Qg6 27. cxd6 cxd6 28. Na5+ Kc7 29. Nc4 Ne5 30. Qa5+ Kb7 31. Qb6+ Kc8 32. Bxe5 Rxe5 33. Qd4 Re7 34. Rhd1 d5 35. exd5 Rb8 36. Rac1 Rb5 37. Ne5 1-0

[Event "olm8 fin B5 corr"]
[Site "ICCF corr"]
[Date "1977.??.??"]
[Round "?"]
[White "Kramer, Haije J"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "E39"]
[PlyCount "59"]
[EventDate "1977.??.??"]
[EventType "team (corr)"]
[EventRounds "12"]
[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. Qc2 c5 5. dxc5 0-0 6. a3 Bxc5 7. Nf3 d5 8. cxd5 exd5 9. Bg5 Qb6 10. e3 Ne4 11. Rc1 h6 12. Nxd5 Qa5+ 13. b4 Bxb4+ 14. axb4 Qxd5 15. Bc4 Qf5 16. Bd3 hxg5 17. Bxe4 Qd7 18. Nxg5 g6 19. h4 Qe7 20. Qb3 Kg7 21. Qb2+ Kh6 22. h5 f5 23. hxg6+ Kxg5 24. Rh7 Qf6 25. Qe2 Qd6 26. Qh5+ Kf6 27. Qh4+ Ke5 28. Bd5 Kxd5 29. Rd1+ Kc6 30. Qc4+ 1-0

[Event "olm8 fin B5 corr"]
[Site "ICCF corr"]
[Date "1977.??.??"]
[Round "?"]
[White "Markland, Peter Richard"]
[Black "Kostadinov, Kostadin"]
[Result "1/2-1/2"]
[ECO "B97"]
[PlyCount "98"]
[EventDate "1977.??.??"]
[EventType "team (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Nb3 Nc6 10. Bd3 Be7 11. Na4 Qa3 12. Nb6 Rb8 13. e5 dxe5 14. Nc4 Qa4 15. fxe5 b5 16. exf6 bxc4 17. fxe7 cxd3 18. Qxd3 f6 19. 0-0 Nxe7 20. Rad1 0-0 21. Bxf6 Ng6 22. Be5 Ra8 23. Qg3 Ra7 24. Rxf8+ Nxf8 25. Rd8 Qc4 26. Qf4 Qxf4 27. Bxf4 Ra8 28. Nc5 e5 29. Bxe5 Kf7 30. a3 g6 31. Ne4 Bb7 32. Nd6+ Ke6 33. Nxb7 Rxd8 34. Nxd8+ Kxe5 35. Nc6+ Kd6 36. Nd4 Kc5 37. Nb3+ Kc4 38. Kf2 Nd7 39. Ke2 Kc3 40. Kd1 Kb2 41. a4 Kc3 42. a5 Nb8 43. h4 Nd7 44. g4 h6 45. Kc1 Kb4 46. g5 hxg5 47. hxg5 Ne5 48. Nd4 Kxa5 49. Kb2 Kb4 1/2-1/2

[Event "olm8 fin B5 corr"]
[Site "ICCF corr"]
[Date "1977.??.??"]
[Round "?"]
[White "Meleghegyi, Csaba"]
[Black "Kostadinov, Kostadin"]
[Result "1-0"]
[ECO "E54"]
[PlyCount "97"]
[EventDate "1977.??.??"]
[EventType "team (corr)"]
[EventRounds "12"]
[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 c5 7. 0-0 cxd4 8. exd4 dxc4 9. Bxc4 b6 10. Bg5 Bb7 11. Ne5 Be7 12. Qe2 Nd5 13. Nxf7 Rxf7 14. Qxe6 Qd7 15. Qxd7 Nxd7 16. Bxd5 Bxd5 17. Bxe7 Bxg2 18. Kxg2 Rxe7 19. Rfe1 Rf7 20. Re3 Raf8 21. f3 Nf6 22. Rd1 Ne8 23. Ne4 Rd7 24. Rd2 Nf6 25. Nxf6+ Rxf6 26. Re4 Kf8 27. Kf2 Rdf7 28. Rd3 Rh6 29. Rc3 Rd7 30. h4 g5 31. hxg5 Rh2+ 32. Ke3 Rxb2 33. a3 Kg7 34. Rd3 Rg2 35. Re5 h6 36. gxh6+ Kxh6 37. d5 Kg7 38. Rd4 Rc2 39. a4 Rc1 40. Kf4 Kf7 41. Kf5 Rc5 42. Rf4 b5 43. Ke4+ Kg6 44. Rg4+ Kh6 45. d6 Rc6 46. Re6+ Kh5 47. Kd5 Ra6 48. Rg1 bxa4 49. f4 1-0

