[Event "Portimao op"]
[Site "Portimao"]
[Date "2024.02.12"]
[Round "2"]
[White "Mitusov, Semen"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "2487"]
[BlackElo "2032"]
[PlyCount "55"]
[EventDate "2024.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POR"]
[SourceTitle "CB09_2024"]
[SourceDate "2024.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2024.02.28"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Bd2 e6 12. 0-0-0 Qc7 13. Ne4 Nxe4 14. Qxe4 Nf6 15. Qe2 0-0-0 16. g3 Kb8 17. Kb1 Ka8 18. c4 c5 19. Bc3 Be7 20. Ne5 Rhf8 21. dxc5 Rxd1+ 22. Rxd1 Qxc5 23. g4 Rc8 24. f3 Rf8 25. f4 Rc8 26. Nxf7 Nxh5 27. Bd4 Qa5 28. Qxe6 1-0

[Event "Split op 12th"]
[Site "Split"]
[Date "2023.08.11"]
[Round "7"]
[White "Saric, Luka2222"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2172"]
[BlackElo "2047"]
[PlyCount "91"]
[EventDate "2023.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. d4 Bf5 5. Nc3 e6 6. Nh4 Bg6 7. Qb3 Qc8 8. Bd2 Nbd7 9. Rc1 Be7 10. Nxg6 hxg6 11. Be2 Nb6 12. c5 Nbd7 13. Qc2 e5 14. f4 e4 15. Kf2 Nf8 16. h3 g5 17. Rcg1 gxf4 18. exf4 Ne6 19. Be3 Nh5 20. Bxh5 Rxh5 21. g4 Rh8 22. f5 Ng5 23. Re1 Nf3 24. Re2 Kf8 25. Kg2 Bf6 26. Qd1 Qc7 27. Bf2 Bh4 28. b4 Re8 29. b5 Qa5 30. Rc2 Qb4 31. Qb1 Qxb1 32. Rxb1 Bxf2 33. Rxf2 Nxd4 34. bxc6 bxc6 35. Rb7 e3 36. Rfb2 Kg8 37. Ne2 Nb5 38. a4 Na3 39. Rxa7 Nc4 40. Rb4 Rh6 41. a5 g6 42. a6 gxf5 43. Rab7 f4 44. Rb8 Rhe6 45. a7 Nd2 46. Rxf4 1-0

[Event "Split op 12th"]
[Site "Split"]
[Date "2023.08.06"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Morgunov, Marc"]
[Result "0-1"]
[ECO "B69"]
[WhiteElo "2047"]
[BlackElo "2394"]
[PlyCount "64"]
[EventDate "2023.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 a6 8. 0-0-0 e6 9. f4 Be7 10. Nf3 b5 11. Bxf6 gxf6 12. f5 h5 13. fxe6 fxe6 14. Bd3 Qb6 15. e5 fxe5 16. Bg6+ Kd8 17. Ne4 Nd4 18. Nxd4 exd4 19. Rhf1 e5 20. Rf7 Be6 21. Rg7 Rg8 22. Qh6 Rxg7 23. Qxg7 Rc8 24. Qh8+ Kd7 25. Qg7 Rf8 26. Ng5 Bg4 27. Nh7 Rf2 28. Rh1 d3 29. Bxd3 Qe3+ 30. Kb1 e4 31. Bxe4 Qxe4 32. Rc1 Qxc2+ 0-1

[Event "World School-ch U17"]
[Site "Rhodes"]
[Date "2023.04.21"]
[Round "8"]
[White "Vasquez Vargas, Henry Richard"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2123"]
[BlackElo "2024"]
[PlyCount "81"]
[EventDate "2023.04.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 a6 4. e3 e6 5. g4 Bb4 6. Nge2 Nbd7 7. a3 Be7 8. Rg1 c5 9. h4 cxd4 10. exd4 Nb6 11. Ng3 Bd6 12. Bxd6 Qxd6 13. g5 Ng8 14. Qf3 Ne7 15. 0-0-0 Bd7 16. Nh5 Rg8 17. Bd3 Ng6 18. Qg3 Qxg3 19. fxg3 0-0-0 20. Rde1 Nc4 21. Bxc4 dxc4 22. Nb1 Bc6 23. c3 Bd5 24. Rgf1 Rd7 25. Nf4 Kd8 26. Nxg6 hxg6 27. Rf4 Rf8 28. Nd2 f6 29. gxf6 gxf6 30. Nf1 b5 31. Ne3 Bb7 32. Ng4 Ke7 33. Ref1 Rd5 34. Nxf6 Rf5 35. Rxf5 exf5 36. Nh7 Re8 37. Re1+ Be4 38. Ng5 Kf6 39. Kd2 Re7 40. Nxe4+ fxe4 41. Rf1+ 1-0

[Event "World School-ch U17"]
[Site "Rhodes"]
[Date "2023.04.18"]
[Round "5"]
[White "Kostov, Kiril"]
[Black "Jackson, Edward"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "2024"]
[BlackElo "1941"]
[PlyCount "106"]
[EventDate "2023.04.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 0-0 8. Qc2 Re8+ 9. Ne2 h5 10. 0-0 h4 11. h3 Na6 12. Bd2 Nc7 13. Rae1 Nd5 14. Qc1 Be6 15. Nf4 Bxf4 16. Bxf4 Qd7 17. Bh2 b5 18. Qc2 f5 19. Qd2 a5 20. Rc1 Rad8 21. Qg5 Qe7 22. Qh5 g6 23. Qh6 g5 24. Qh5 f6 25. Rfe1 Qf7 26. Qf3 Qd7 27. Qd1 Kg7 28. Bb1 Re7 29. Qd3 Rde8 30. Rf1 Nb6 31. b3 Bd5 32. Qxf5 Qxf5 33. Bxf5 Re2 34. Rc2 Rxc2 35. Bxc2 Re2 36. Rc1 a4 37. Kf1 Re7 38. Bd6 Rb7 39. Rb1 axb3 40. axb3 Ra7 41. f3 Ra2 42. Be4 Kf7 43. Bc5 Nd7 44. Bxd5+ cxd5 45. Bb4 f5 46. Re1 Nf6 47. Re7+ Kg6 48. Rb7 Nh5 49. Rb6+ Kf7 50. Rxb5 Ng3+ 51. Kg1 Ra1+ 52. Kf2 f4 53. Rb7+ Kg6 0-1

[Event "Basel Carnival op"]
[Site "Basel"]
[Date "2023.02.26"]
[Round "5"]
[White "Boschetti, Claudio"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1992"]
[BlackElo "2048"]
[PlyCount "91"]
[EventDate "2023.02.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "SUI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bc4 e6 5. Qe2 Be7 6. 0-0 0-0 7. Bb3 Nc6 8. d3 b6 9. Re1 Bb7 10. Nbd2 Rc8 11. Nf1 Qd7 12. Ng3 Rfd8 13. h3 Ne5 14. d4 Nxf3+ 15. Qxf3 cxd4 16. cxd4 a5 17. a4 d5 18. e5 Ne4 19. Qg4 Nxg3 20. Qxg3 Ba6 21. Bh6 Bf8 22. Re3 Rc7 23. Qg4 Kh8 24. Bg5 Be7 25. Rg3 Bxg5 26. Qxg5 Rg8 27. Rg4 Qe7 28. Qd2 Rgc8 29. Rg3 h6 30. Kh2 Rc6 31. Qf4 R8c7 32. Re1 Qb4 33. Ree3 Rc1 34. Rxg7 Kxg7 35. Bxd5 Qe7 36. Rg3+ Kf8 37. Qxh6+ Ke8 38. Be4 Rc8 39. Rg7 Rf1 40. f4 Qf8 41. Qh7 Ke7 42. f5 exf5 43. Bd5 Qxg7 44. Qxg7 Re8 45. Qf6+ Kd7 46. Bc6+ 1-0

[Event "Basel Carnival op"]
[Site "Basel"]
[Date "2023.02.26"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Begdullayev, Tamerlan"]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "2048"]
[BlackElo "1776"]
[PlyCount "77"]
[EventDate "2023.02.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "SUI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 e6 8. 0-0 Nb6 9. Bb3 Be7 10. a4 e5 11. Nde2 0-0 12. Bxf6 Bxf6 13. a5 Nd7 14. Qxd6 Be7 15. Qd5 Qc7 16. Qc4 Qd6 17. Nd5 Bd8 18. Rfd1 Qg6 19. Ng3 Kh8 20. Qb4 Re8 21. Ba4 Rb8 22. Nf5 Qe6 23. Nd6 Rg8 24. Nxc8 Rxc8 25. Bxd7 Qxd7 26. Nb6 Qc6 27. Nxc8 Qxc8 28. c3 h5 29. Qd6 Bf6 30. Qd7 Qc4 31. Qxb7 h4 32. h3 Qe2 33. Rd6 Qh5 34. Rxa6 Bd8 35. Ra8 g5 36. Qd5 Bf6 37. Rxg8+ Kxg8 38. a6 g4 39. Qd1 1-0

[Event "Basel Carnival op"]
[Site "Basel"]
[Date "2023.02.25"]
[Round "3"]
[White "Kuepper, Martin"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "1985"]
[BlackElo "2048"]
[PlyCount "97"]
[EventDate "2023.02.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "SUI"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 e6 3. c4 Nf6 4. Nc3 c6 5. b3 Bd6 6. Bb2 0-0 7. Qc2 Na6 8. Rc1 Nc7 9. d4 Re8 10. Bd3 Bf8 11. 0-0 g6 12. Ne5 Nd7 13. f4 Nxe5 14. fxe5 Bg7 15. Rf3 c5 16. Qf2 Qd7 17. Rf1 Rf8 18. Ne2 b6 19. Qh4 Bb7 20. Rh3 h6 21. Qg4 dxc4 22. bxc4 Rac8 23. Nf4 a6 24. d5 Qa4 25. Nh5 Ne8 26. Nxg7 Kxg7 27. Bxg6 fxg6 28. Rxf8 Kxf8 29. Rf3+ Ke7 30. Qxe6+ Kd8 31. Rf8 Kc7 32. d6+ Kb8 33. d7 Qd1+ 34. Rf1 Qe2 35. dxc8Q+ Bxc8 36. Qxe8 Qxe3+ 37. Kh1 Qe2 38. Qf7 Qxb2 39. e6 Qe2 40. e7 Bd7 41. h3 g5 42. Rf2 Qe1+ 43. Kh2 h5 44. Qf6 Kb7 45. Qf3+ Bc6 46. Qe2 Qxe2 47. Rxe2 Be8 48. Rd2 Kc7 49. Rd8 1-0

[Event "Lienz op 21st"]
[Site "Lienz"]
[Date "2023.02.18"]
[Round "9"]
[White "Kobl, Rudolf"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "2086"]
[BlackElo "2048"]
[PlyCount "124"]
[EventDate "2023.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. 0-0 Nbd7 8. f4 Qc7 9. Kh1 b5 10. Bf3 Bb7 11. a3 Rc8 12. g4 h6 13. Qe1 Qb8 14. Nb3 Be7 15. Be3 Qa8 16. Na5 Rxc3 17. bxc3 Bxe4 18. Qg3 Bxf3+ 19. Qxf3 Qxf3+ 20. Rxf3 Nxg4 21. c4 bxc4 22. Nxc4 d5 23. Na5 Nxe3 24. Rxe3 Bc5 25. Rb3 Bb6 26. Nc6 Bc7 27. Rf1 Nc5 28. Rb4 f6 29. Nd4 Kd7 30. Nb3 Nxb3 31. cxb3 g6 32. Rc1 Rb8 33. Rxb8 Bxb8 34. Rf1 a5 35. Kg2 Bd6 36. a4 f5 37. h4 Be7 38. Kg3 g5 39. fxg5 hxg5 40. h5 Bd6+ 41. Kf2 Bf8 42. Rh1 Bh6 43. Rb1 Bf8 44. b4 axb4 45. h6 Bxh6 46. Rxb4 Bf8 47. Rb8 Bc5+ 48. Ke2 g4 49. a5 f4 50. Rg8 g3 51. a6 e5 52. a7 Bxa7 53. Rg7+ Ke6 54. Rxa7 e4 55. Ra6+ Ke5 56. Ra8 f3+ 57. Ke3 d4+ 58. Kd2 e3+ 59. Kd3 g2 60. Re8+ Kd6 61. Rd8+ Ke7 62. Rg8 f2 0-1

[Event "Lienz op 21st"]
[Site "Lienz"]
[Date "2023.02.15"]
[Round "6"]
[White "Kostov, Kiril"]
[Black "Holtel, Jasper"]
[Result "0-1"]
[ECO "B28"]
[WhiteElo "2048"]
[BlackElo "2342"]
[PlyCount "56"]
[EventDate "2023.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c4 Nc6 4. d4 cxd4 5. Nxd4 e5 6. Nc2 Bc5 7. Nc3 d6 8. a3 Nf6 9. Be2 0-0 10. 0-0 Be6 11. Be3 Rc8 12. b4 Bxe3 13. Nxe3 Nd4 14. Rc1 b5 15. cxb5 Nxe4 16. Nxe4 Rxc1 17. Qd2 Rxf1+ 18. Bxf1 axb5 19. Nc3 Qd7 20. Qd3 Ra8 21. Ne2 Nxe2+ 22. Bxe2 d5 23. h3 f5 24. Nc2 d4 25. Qxb5 Qxb5 26. Bxb5 Bb3 27. Ne1 e4 28. Bd7 d3 0-1

[Event "Lienz op 21st"]
[Site "Lienz"]
[Date "2023.02.14"]
[Round "5"]
[White "Ollenberger, Roland"]
[Black "Kostov, Kiril"]
[Result "1/2-1/2"]
[ECO "B53"]
[WhiteElo "2267"]
[BlackElo "2048"]
[PlyCount "166"]
[EventDate "2023.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Qe3 g6 6. Nc3 Bg7 7. Be2 Nf6 8. h3 0-0 9. 0-0 a6 10. Rd1 Nd7 11. Rb1 b5 12. a3 Nb6 13. b3 e6 14. Qd2 Bb7 15. Bb2 Nc8 16. a4 b4 17. Na2 Qa5 18. Bxg7 Kxg7 19. Nd4 Nxd4 20. Qxd4+ e5 21. Qxb4 Qxb4 22. Nxb4 Bxe4 23. a5 Rd8 24. Rd2 Bb7 25. Rbd1 Rd7 26. Bc4 Kf8 27. Nd3 Rc7 28. Nb2 Rb8 29. Na4 Ke7 30. g4 h6 31. Re1 f5 32. Re3 f4 33. Red3 Be4 34. Rc3 Bb7 35. Rcd3 Rd7 36. f3 Na7 37. Nc5 Rdd8 38. Nxb7 Rxb7 39. Bxa6 Rbb8 40. Rc3 Nb5 41. Rc4 d5 42. Ra4 Nc3 43. Ra1 e4 44. Kf1 Rd6 45. Be2 Rc6 46. fxe4 dxe4 47. Bc4 Rd6 48. Rxd6 Kxd6 49. a6 Kc5 50. a7 Ra8 51. Ra5+ Kd4 52. Be6 Ke3 53. Bd7 Kd2 54. Bc6 e3 55. Bf3 e2+ 56. Bxe2 Nxe2 57. Rd5+ Kxc2 58. Kxe2 Rxa7 59. Rd6 g5 60. b4 Re7+ 61. Kf2 Kc3 62. b5 Kc4 63. b6 Rh7 64. Rc6+ Kd4 65. Rc7 Rh8 66. b7 Rb8 67. Kf3 Kd5 68. Rh7 Kd4 69. Rd7+ Ke5 70. Rh7 Kd4 71. Re7 Kd5 72. h4 Rf8 73. Rf7 Rb8 74. h5 Ke5 75. Rh7 Kd4 76. Rd7+ Ke5 77. Rc7 Kd4 78. Re7 Kd5 79. Rf7 Ke5 80. Rh7 Kd4 81. Rxh6 Rxb7 82. Rg6 Rb3+ 83. Kf2 Rb2+ 1/2-1/2

[Event "Lienz op 21st"]
[Site "Lienz"]
[Date "2023.02.12"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Venkatesh, Marani Rajendran"]
[Result "0-1"]
[ECO "B60"]
[WhiteElo "2048"]
[BlackElo "2452"]
[PlyCount "60"]
[EventDate "2023.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. f4 Qb6 8. Nb3 Be7 9. Qd2 0-0 10. a4 h6 11. a5 Nxa5 12. Rxa5 hxg5 13. Rxg5 d5 14. e5 Ne4 15. Nxe4 dxe4 16. Rh5 Rd8 17. Qe2 Qb4+ 18. Kf2 a5 19. Rh3 g6 20. Qb5 Rd2+ 21. Nxd2 Qxd2+ 22. Be2 Bd7 23. Qxb7 Qxf4+ 24. Rf3 Bc5+ 25. Ke1 Qc1+ 26. Bd1 Rd8 27. Rff1 Be3 28. Rf2 Bxf2+ 29. Kxf2 Qf4+ 30. Ke2 Bb5+ 0-1

[Event "Arco op 44th"]
[Site "Arco"]
[Date "2022.10.16"]
[Round "9"]
[White "Kostov, Kiril"]
[Black "Leutwyler, Martin"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1874"]
[BlackElo "2117"]
[PlyCount "8"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 g6 4. c3 Bg7 1/2-1/2

[Event "Arco op 44th"]
[Site "Arco"]
[Date "2022.10.14"]
[Round "7"]
[White "Kostov, Kiril"]
[Black "Hopfgartner, Heinz Roland"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1874"]
[BlackElo "2014"]
[PlyCount "81"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 5. d4 a6 6. Bf4 c5 7. dxc5 Nc6 8. Bd3 Nxc5 9. 0-0 Be7 10. Bg3 b5 11. a3 Bd7 12. Ne2 Na4 13. b3 Nc5 14. Nfd4 0-0 15. f4 Nxd4 16. Nxd4 Nxd3 17. cxd3 Bc5 18. Bf2 Qb6 19. Nf3 Bxf2+ 20. Rxf2 Rac8 21. d4 Rc3 22. Rc1 Rfc8 23. Rfc2 R3c6 24. Rxc6 Rxc6 25. Rxc6 Qxc6 26. Qd2 f6 27. Ne1 Be8 28. Nd3 Bg6 29. Nc5 fxe5 30. fxe5 Qb6 31. Qg5 Kf7 32. b4 h6 33. Qf4+ Ke7 34. h4 a5 35. Qd2 a4 36. Qf4 Bc2 37. Qg3 Kf7 38. Qf2+ Bf5 39. g4 g6 40. gxf5 gxf5 41. Qf4 1-0

[Event "Arco op 44th"]
[Site "Arco"]
[Date "2022.10.13"]
[Round "6"]
[White "Cardilli, Mariano"]
[Black "Kostov, Kiril"]
[Result "1/2-1/2"]
[ECO "A58"]
[WhiteElo "2043"]
[BlackElo "1874"]
[PlyCount "68"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bg7 7. e4 0-0 8. Nf3 Qa5 9. Nd2 Bxa6 10. Be2 e6 11. 0-0 exd5 12. exd5 Bxe2 13. Qxe2 Re8 14. Qd1 Na6 15. Nc4 Qb4 16. Qd3 Qb8 17. Be3 Nb4 18. Qd1 Ne4 19. Nxe4 Rxe4 20. Nd2 Rh4 21. Nf3 Rh5 22. Qb3 Rxd5 23. a3 Rd3 24. Qc4 d5 25. Qxc5 Na6 26. Qc6 Qc8 27. Qxc8+ Rxc8 28. Rab1 Rb8 29. b4 Rb5 30. Rfc1 h6 31. Rc8+ Kh7 32. Ra8 Rxa3 33. h3 Ra4 34. Ra7 Rb8 1/2-1/2

[Event "Arco op 44th"]
[Site "Arco"]
[Date "2022.10.12"]
[Round "5"]
[White "Kostov, Kiril"]
[Black "Foldes, Marton Gabor"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1874"]
[BlackElo "2089"]
[PlyCount "76"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. b3 Bf5 10. Be2 d5 11. c5 Nc8 12. Bf3 e5 13. dxe5 Nc6 14. Bd4 Re8 15. Nge2 Bxe5 16. Kf1 Qh4 17. Bxe5 Nxe5 18. Ng3 Bd3+ 19. Be2 d4 20. Bxd3 dxc3 21. Be2 Ne7 22. Rxc3 Rad8 23. Qb1 Nd5 24. Rc1 Nf4 25. Bb5 Nf3 26. Qb2 Re5 27. Qc3 Nd2+ 28. Kg1 Qe7 29. h3 a6 30. Bf1 Nxf1 31. Rxf1 Rxc5 32. Qb4 Nd3 33. Qa3 Qc7 34. Qa4 Nxf2 35. Kxf2 Rc2+ 36. Ne2 Qc5+ 37. Kf3 Rd3+ 38. Kg4 Qh5+ 0-1

[Event "Arco op 44th"]
[Site "Arco"]
[Date "2022.10.11"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Bohnhoff, Peter"]
[Result "1-0"]
[ECO "C60"]
[WhiteElo "1874"]
[BlackElo "2064"]
[PlyCount "67"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. h3 g6 6. d4 Bg7 7. 0-0 Nf6 8. c3 Bd7 9. Bc2 0-0 10. Bg5 h6 11. Be3 b5 12. Re1 Re8 13. Nbd2 Qe7 14. d5 Na5 15. a4 c6 16. Bb6 Nb7 17. dxc6 Bxc6 18. c4 Nd7 19. Be3 Ndc5 20. axb5 axb5 21. b4 Ne6 22. Bd3 Qd7 23. Qe2 Nc7 24. cxb5 Bxb5 25. Nc4 Bxc4 26. Bxc4 Red8 27. Bb6 Re8 28. Rec1 Ne6 29. Rxa8 Rxa8 30. Bb5 Nf4 31. Qc4 Qe6 32. Qc6 Qe7 33. Bc7 Ra7 34. Qb6 1-0

[Event "Arco op 44th"]
[Site "Arco"]
[Date "2022.10.10"]
[Round "3"]
[White "Steinschuld, Jo"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "1548"]
[BlackElo "1874"]
[PlyCount "46"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3 g6 7. d4 cxd4 8. Nxd4 Bg7 9. Nxc6 Qxc6 10. Qd3 Rc8 11. b3 b5 12. Bb2 bxc4 13. bxc4 Qxc4 14. Qxc4 Rxc4 15. Rc1 Nf6 16. f3 Kd7 17. Ne2 Rhc8 18. Rxc4 Rxc4 19. Kd1 Nxe4 20. Bxg7 Nf2+ 21. Ke1 Nxh1 22. Bc3 Ra4 23. Kf1 Rxa2 0-1

[Event "Arco op 44th"]
[Site "Arco"]
[Date "2022.10.09"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Bernath, Bence"]
[Result "0-1"]
[ECO "C72"]
[WhiteElo "1874"]
[BlackElo "2134"]
[PlyCount "56"]
[EventDate "2022.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. 0-0 Bg4 6. c3 Qf6 7. d3 Nge7 8. Be3 Ng6 9. h3 Bxf3 10. Qxf3 Qxf3 11. gxf3 Be7 12. b4 0-0 13. Bb3 Kh8 14. Rd1 f5 15. Kf1 fxe4 16. fxe4 Nf4 17. Bxf4 Rxf4 18. Nd2 Raf8 19. f3 R8f6 20. Kg2 Rg6+ 21. Kf2 Bh4+ 22. Kf1 Rff6 23. a4 Rg5 24. b5 Rfg6 25. d4 Rg2 26. Bc4 Rf2+ 27. Ke1 Rg1+ 28. Nf1 Rfg2# 0-1

[Event "SUI-ch U16"]
[Site "Biel"]
[Date "2022.07.21"]
[Round "7"]
[White "Saminskij, David"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1469"]
[BlackElo "2010"]
[PlyCount "74"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Bd7 5. d3 Nc6 6. 0-0 e5 7. Be3 Be7 8. Nbd2 0-0 9. h3 Re8 10. Rb1 a5 11. a4 h6 12. d4 exd4 13. cxd4 Bf8 14. Bd3 Nb4 15. Bc2 Rc8 16. dxc5 dxc5 17. e5 Nfd5 18. Nc4 Nxe3 19. Nxe3 Be6 20. Bf5 Bxf5 21. Nxf5 Qb6 22. b3 Rcd8 23. Qc1 Qe6 24. Ne3 Nd3 25. Qc3 b6 26. Nc4 Nf4 27. Qe3 Qf5 28. Rbd1 Rxd1 29. Rxd1 Re6 30. Nd6 Qc2 31. Rd2 Qc1+ 32. Kh2 Nxg2 33. Kxg2 Rg6+ 34. Kh2 Qf1 35. Ng5 Rxg5 36. f4 Rg1 37. Qe2 Rh1+ 0-1

[Event "SUI-ch U16"]
[Site "Biel"]
[Date "2022.07.20"]
[Round "6"]
[White "Kostov, Kiril"]
[Black "Papaux, Steve"]
[Result "0-1"]
[ECO "C90"]
[WhiteElo "2010"]
[BlackElo "2031"]
[PlyCount "130"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. Re1 0-0 8. d3 d6 9. h3 Na5 10. c3 Nxb3 11. axb3 c5 12. Nbd2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. Bg5 h6 16. Be3 Bg7 17. Qc1 Kh7 18. Rd1 Qc7 19. Ne1 Be6 20. Qc2 Nd7 21. f3 d5 22. Ne2 Rec8 23. Rdc1 Qb7 24. Qd1 f5 25. Qc2 g5 26. Bf2 fxe4 27. fxe4 dxe4 28. dxe4 Nf6 29. Ng3 h5 30. Nf3 h4 31. Nf5 Bh6 32. Nxe5 Qxe4 33. Qxe4 Nxe4 34. Nxh6 Kxh6 35. b4 Nd2 36. Re1 cxb4 37. Nd3 Bxh3 38. Rad1 bxc3 39. bxc3 Rxc3 40. Ne5 Bxg2 41. Kxg2 h3+ 42. Kh2 Nf3+ 43. Nxf3 Rf8 44. Re6+ Kh5 45. Bd4 Rcxf3 46. Bg7 Rf2+ 47. Kg1 Rg2+ 48. Kh1 Rff2 49. Rh6+ Kg4 50. Rd4+ Kf3 51. Rf6+ Kg3 52. Rd3+ Kg4 53. Rd4+ Rf4 54. Rdxf4+ gxf4 55. Rxa6 f3 56. Rg6+ Kf5 57. Rf6+ Ke4 58. Re6+ Kd5 59. Re5+ Kc4 60. Re4+ Kd3 61. Rd4+ Ke3 62. Bf6 f2 63. Rd1 Ke2 64. Rb1 f1R+ 65. Rxf1 Kxf1 0-1

[Event "SUI-ch U16"]
[Site "Biel"]
[Date "2022.07.20"]
[Round "5"]
[White "Rotunno, Flavio"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "1901"]
[BlackElo "2010"]
[PlyCount "57"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3 axb5 6. e4 b4 7. Nb5 d6 8. a4 Nbd7 9. Bc4 Nb6 10. Qe2 Nxc4 11. Qxc4 Nd7 12. Nf3 Ba6 13. Bf4 Qb8 14. 0-0 g6 15. e5 dxe5 16. Nxe5 Nxe5 17. Bxe5 Qxe5 18. Rfe1 Qb8 19. Qxc5 Kd8 20. d6 e6 21. Qe5 Rg8 22. Qf6+ Ke8 23. d7+ Kxd7 24. Qxf7+ Kc6 25. Rxe6+ Bd6 26. Rc1+ Kb6 27. Nxd6 Ka5 28. Re5+ Kb6 29. a5# 1-0

[Event "SUI-ch U16"]
[Site "Biel"]
[Date "2022.07.19"]
[Round "3"]
[White "Gemelli, Romain"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2045"]
[BlackElo "2010"]
[PlyCount "81"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 d6 5. cxb5 a6 6. e3 g6 7. Nc3 Bg7 8. a4 0-0 9. e4 Ne8 10. Bf4 axb5 11. axb5 Bb7 12. Rxa8 Bxa8 13. Be2 Nd7 14. 0-0 Nc7 15. Qd2 Qb8 16. Ra1 Re8 17. h4 Nb6 18. h5 Bb7 19. Ra3 Bc8 20. hxg6 hxg6 21. e5 Rd8 22. Bg5 Bf8 23. Bh6 Bg7 24. e6 Bxe6 25. dxe6 Nxe6 26. Bxg7 Kxg7 27. Nd5 Nxd5 28. Qxd5 Nf4 29. Qd2 e5 30. g3 Nh5 31. Qg5 f6 32. Qg4 Kh6 33. Nh4 Rg8 34. Qe6 Qd8 35. Bxh5 Kxh5 36. Ra6 d5 37. Rd6 Qa5 38. Qxg8 Qe1+ 39. Kg2 Qe4+ 40. Nf3 Kg4 41. Qxd5 1-0

[Event "SUI-ch U16"]
[Site "Biel"]
[Date "2022.07.19"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Kasipour Azbari, Seyed Arvin"]
[Result "1/2-1/2"]
[ECO "B26"]
[WhiteElo "2010"]
[BlackElo "1944"]
[PlyCount "69"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 d6 6. 0-0 e6 7. d3 Nge7 8. Be3 Nd4 9. Rb1 Rb8 10. Qd2 0-0 11. Nd1 b5 12. f4 b4 13. Bxd4 cxd4 14. g4 f5 15. g5 e5 16. Nf2 Qb6 17. Rbe1 Ba6 18. exf5 Nxf5 19. Ng4 Ne3 20. Nxe3 dxe3 21. Qc1 exf4 22. Rxf4 Qc5 23. Ref1 Qxg5 24. Qxe3 Qe5 25. Qxe5 dxe5 26. Bd5+ Kh8 27. Rf7 Rxf7 28. Rxf7 Rf8 29. Rxa7 Bc8 30. Rf7 Rxf7 31. Bxf7 e4 32. dxe4 Bxb2 33. Kg2 Kg7 34. Bb3 g5 35. Kf3 1/2-1/2

[Event "SUI-ch U16"]
[Site "Biel"]
[Date "2022.07.18"]
[Round "1"]
[White "Hirzel, Cedric"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "1649"]
[BlackElo "2010"]
[PlyCount "62"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bg7 7. e4 0-0 8. Nf3 d6 9. h3 Qa5 10. Bd2 Bxa6 11. Bxa6 Nxa6 12. 0-0 Rfb8 13. a3 Nc7 14. Qc2 Qb6 15. Rfb1 Qb3 16. Qxb3 Rxb3 17. Bc1 Nb5 18. Nxb5 Rxb5 19. Nd2 Rab8 20. f3 e6 21. dxe6 fxe6 22. Nf1 Nd7 23. Ne3 Ne5 24. Ra2 Nd3 25. Kf1 Bh6 26. Ke2 Rb3 27. Bd2 Bxe3 28. Bxe3 Nxb2 29. Bf4 Nd3 30. Bxd6 Rxb1 31. Bxb8 Nc1+ 0-1

[Event "SUI-ch U16"]
[Site "Biel"]
[Date "2022.07.18"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Doetsch Thaler, Nicos"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2010"]
[BlackElo "1837"]
[PlyCount "135"]
[EventDate "2022.07.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. Be3 Nf6 8. a3 b5 9. 0-0 Be7 10. Kh1 Bb7 11. f4 0-0 12. e5 Ne8 13. Bf3 d6 14. exd6 Nxd6 15. Qe2 Bf6 16. Rad1 Rad8 17. Na2 Ne7 18. Nb4 a5 19. Na2 Nd5 20. c3 Qc4 21. Qxc4 Nxc4 22. Bc1 Ba6 23. Rfe1 Ne7 24. Nb3 Nf5 25. Nc5 Bc8 26. b3 Nb6 27. g4 Be7 28. Nd3 Nd6 29. Ne5 Bf6 30. Be3 Nd5 31. Nc6 Rd7 32. Ne5 Bxe5 33. fxe5 Nb7 34. c4 bxc4 35. bxc4 Nxe3 36. Rxd7 Bxd7 37. Rxe3 Nc5 38. Re1 Rb8 39. Nc1 Kf8 40. Kg2 Rb2+ 41. Re2 Rb1 42. Re1 Ra1 43. Nd3 Ra2+ 44. Re2 Rxe2+ 45. Bxe2 Nxd3 46. Bxd3 Ke7 47. Kf3 h6 48. Ke3 Bc6 49. Be2 Kd7 50. Kd4 Kc7 51. Kc5 f5 52. gxf5 exf5 53. e6 g5 54. Bh5 f4 55. e7 g4 56. Bxg4 Be8 57. Kd5 h5 58. Bd1 h4 59. Ke5 Bf7 60. Kf6 Be8 61. Kg7 Kd6 62. Kf8 Bc6 63. e8Q Bxe8 64. Kxe8 Kc5 65. Be2 f3 66. Bf1 Kd4 67. Kd7 Ke3 68. c5 1-0

[Event "Solta op 5th"]
[Site "Grohote"]
[Date "2022.07.06"]
[Round "5"]
[White "Labrovic, Jakov"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B83"]
[WhiteElo "1786"]
[BlackElo "2010"]
[PlyCount "83"]
[EventDate "2022.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. a4 e6 5. d4 cxd4 6. Nxd4 Nf6 7. Be2 Be7 8. Be3 Nc6 9. 0-0 Bd7 10. Nb3 Na5 11. Nd2 Rc8 12. f4 Qc7 13. Bd3 e5 14. f5 g6 15. g4 gxf5 16. exf5 h5 17. g5 Rg8 18. h4 d5 19. Bf2 Bc5 20. Kh1 Bxf2 21. gxf6 Qc5 22. Qe2 Bd4 23. Nf3 Bxc3 24. bxc3 e4 25. Ng5 Qd6 26. Qxh5 Qxf6 27. Rae1 Rh8 28. Qg4 Qh6 29. Rf4 Rg8 30. Bxe4 dxe4 31. Rfxe4+ Kf8 32. Re7 Be8 33. Qb4 Kg7 34. Qd4+ Kf8 35. Qb4 Qc6+ 36. R1e4 Kg7 37. Qd4+ Kh6 38. Qe3 Nc4 39. Nxf7+ Kg7 40. Nd6+ Kf6 41. R7e6+ Kg7 42. Qh6# 1-0

[Event "Solta op 5th"]
[Site "Grohote"]
[Date "2022.07.04"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Bartel, Michal"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2010"]
[BlackElo "2195"]
[PlyCount "92"]
[EventDate "2022.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qf3 Qxf3 7. gxf3 bxc6 8. Be3 Bxe3 9. fxe3 d6 10. Nd2 Ne7 11. Rg1 0-0 12. 0-0-0 f5 13. exf5 Bxf5 14. Bc4+ Kh8 15. Rg5 Rf6 16. Rdg1 Rg6 17. Bd3 Bxd3 18. cxd3 Rxg5 19. Rxg5 Nd5 20. Nc4 h6 21. Rh5 Kh7 22. Kd2 g5 23. Rh3 c5 24. Rg3 Nb4 25. a3 Nc6 26. e4 Rf8 27. Ke3 Nd4 28. b4 Re8 29. Rh3 Kg6 30. bxc5 dxc5 31. Kd2 h5 32. Kd1 Re6 33. Ne3 Rf6 34. Nd5 Rf7 35. e5 Rxf3 36. Rxf3 Nxf3 37. e6 Nxh2 38. Nxc7 Kf6 39. Nb5 g4 40. Nxa7 h4 41. a4 g3 42. Ke2 h3 43. Nc6 Kxe6 44. Nd8+ Kf6 45. a5 g2 46. Kf2 Nf3 0-1

[Event "Solta op 5th"]
[Site "Grohote"]
[Date "2022.07.02"]
[Round "1"]
[White "Kostov, Kiril"]
[Black "Brkic, Ante"]
[Result "0-1"]
[ECO "B66"]
[WhiteElo "2010"]
[BlackElo "2611"]
[PlyCount "58"]
[EventDate "2022.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRO"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nc6 7. Qd2 e6 8. f4 h6 9. Bh4 Nxe4 10. Nxe4 Qxh4+ 11. g3 Qd8 12. 0-0-0 d5 13. Nf2 Qb6 14. Nb3 Be7 15. h4 Bd7 16. f5 exf5 17. Qxd5 Be6 18. Qd2 0-0 19. Kb1 a5 20. Bh3 a4 21. Nc1 Na5 22. Bf1 Bf6 23. c3 Rfc8 24. Rh2 Bxc3 25. Qe2 a3 26. Nfd3 axb2 27. Nxb2 Nc4 28. Ncd3 Nxb2 29. Nxb2 Bxa2+ 0-1

[Event "SUI-ch TP1"]
[Site "Payerne"]
[Date "2022.05.26"]
[Round "1"]
[White "Kostov, Kiril"]
[Black "Colmenares, Aurelio"]
[Result "1/2-1/2"]
[ECO "B68"]
[WhiteElo "2068"]
[BlackElo "2318"]
[PlyCount "75"]
[EventDate "2022.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. f4 Be7 8. Qd2 a6 9. 0-0-0 Bd7 10. Nf3 b5 11. e5 b4 12. Ne2 Ne4 13. Bxe7 Qa5 14. Qe3 d5 15. Bd6 Qxa2 16. Nd2 Na5 17. Nd4 Rc8 18. Nxe4 dxe4 19. Qg3 Ba4 20. Kd2 Qxb2 21. Ke1 Bxc2 22. Qg5 Rc7 23. Bxc7 0-0 24. Bd6 Bxd1 25. Bxf8 Qc3+ 26. Kxd1 Qxd4+ 27. Ke1 Kxf8 28. Qg3 e3 29. Ke2 Nc4 30. Kf3 Nd2+ 31. Kg4 Qe4 32. Qh4 f5+ 33. exf6 Nxf1 34. fxg7+ Kxg7 35. Qe7+ Kg8 36. Qe8+ Kg7 37. Qe7+ Kg6 38. Qe8+ 1/2-1/2

[Event "EU-ch Schools U15"]
[Site "Rhodes"]
[Date "2022.04.29"]
[Round "7"]
[White "Tarhan, Adar"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2314"]
[BlackElo "2056"]
[PlyCount "73"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 b5 8. Bg2 Bb7 9. g5 Nfd7 10. Be3 Nb6 11. b3 N8d7 12. Nce2 Rc8 13. 0-0 d5 14. Ng3 dxe4 15. Nxe4 Nd5 16. Qg4 Qb6 17. Rad1 Be7 18. Qg3 Nxe3 19. fxe3 Nc5 20. Nxc5 Bxc5 21. g6 hxg6 22. Bxb7 Qxb7 23. Nxe6 Qe7 24. Rd5 Bxe3+ 25. Qxe3 fxe6 26. Re5 Rc6 27. Qe4 Qd7 28. Qxg6+ Kd8 29. Re3 Qd4 30. Qg5+ Kc8 31. Rf2 g6 32. Rd3 Qg7 33. Rfd2 Rf8 34. Rd8+ Kc7 35. Qg3+ e5 36. Qe3 Rcf6 37. Qa7+ 1-0

[Event "EU-ch Schools U15"]
[Site "Rhodes"]
[Date "2022.04.28"]
[Round "6"]
[White "Kovalskyi, Roman"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "1849"]
[BlackElo "2056"]
[PlyCount "159"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. b3 g6 3. Bb2 Nf6 4. e5 Nd5 5. Qf3 Nb4 6. Na3 Bg7 7. e6 0-0 8. Bxg7 Kxg7 9. exf7 Rxf7 10. Qc3+ Rf6 11. Qxc5 N8c6 12. Nf3 d6 13. Qc3 Bf5 14. Nh4 Qa5 15. Nxf5+ Qxf5 16. f3 d5 17. Be2 d4 18. Qb2 Qc5 19. c3 Na6 20. b4 Qe5 21. Nc4 Qe6 22. b5 Nc5 23. Qb1 d3 24. Ne3 Ne5 25. Bd1 Nc4 26. Qc1 Rd8 27. 0-0 Nxe3 28. Re1 Qb6 29. Rxe3 Re6 30. c4 Kg8 31. Qc3 Rf8 32. Qd4 Rd6 33. Qh4 Re6 34. Rxe6 Qxe6 35. Bb3 Qb6 36. Qf2 Qf6 37. Re1 b6 38. Qe3 e6 39. Qe5 Qd8 40. Re3 Rf5 41. Qc3 Qd6 42. a3 Rf8 43. Ba2 Rd8 44. Qe5 Qxe5 45. Rxe5 Kf7 46. Kf2 Kf6 47. Re1 a6 48. Rc1 e5 49. Ke3 Ra8 50. Rc3 e4 51. fxe4 Re8 52. bxa6 Nxe4 53. Rc1 Nc5+ 54. Kd4 Rd8+ 55. Kc3 Nxa6 56. Bb1 Nc5 57. Rf1+ Ke5 58. Rf3 Ne4+ 59. Kb4 Nxd2 60. Rxd3 Rd4 61. Rxd4 Kxd4 62. Ba2 Ne4 63. a4 Nd6 64. Bb3 h6 65. g4 h5 66. g5 Nf7 67. h4 Nd6 68. Bc2 Nxc4 69. Bxg6 Nd6 70. Bxh5 Ke5 71. Be2 Kf4 72. g6 Ne8 73. Kb5 Kf5 74. h5 Kf6 75. Kxb6 Kg7 76. a5 Nd6 77. a6 Kh6 78. a7 Nc8+ 79. Kb7 Nxa7 80. Kxa7 1-0

[Event "EU-ch Schools U15"]
[Site "Rhodes"]
[Date "2022.04.26"]
[Round "5"]
[White "Kostov, Kiril"]
[Black "Shtavica, Alaudin"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2056"]
[BlackElo "1348"]
[PlyCount "75"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. Nxe5 Nxe5 8. d4 0-0 9. dxe5 Nxe4 10. Qd5 Bb7 11. Qd3 Qh4 12. Be3 d6 13. Nc3 Rad8 14. Bd5 Bxd5 15. Nxd5 Bxe3 16. Qxe3 c6 17. g3 Qg4 18. f3 Qe6 19. Nf4 Qxe5 20. Nd3 Qg5 21. Qxe4 d5 22. Qf4 Qg6 23. Qd4 Qg5 24. Rad1 Rfe8 25. Rfe1 Qh5 26. Kg2 Qh6 27. Qf4 Qg6 28. Rxe8+ Rxe8 29. Re1 Rc8 30. Qc7 Rf8 31. Re2 h5 32. Ne5 Qe6 33. Qxc6 Re8 34. Kf2 f6 35. Qxe6+ Rxe6 36. Nd3 Rxe2+ 37. Kxe2 Kf7 38. Nf4 1-0

[Event "EU-ch Schools U15"]
[Site "Rhodes"]
[Date "2022.04.25"]
[Round "4"]
[White "Portakalci, Yusuf"]
[Black "Kostov, Kiril"]
[Result "1/2-1/2"]
[ECO "A31"]
[WhiteElo "1805"]
[BlackElo "2056"]
[PlyCount "65"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 e5 5. Nc2 d5 6. cxd5 Qxd5 7. Qxd5 Nxd5 8. e4 Nb4 9. Nba3 N8c6 10. Bc4 Be6 11. Bxe6 fxe6 12. 0-0 Bc5 13. Nxb4 Bxb4 14. Be3 Bxa3 15. bxa3 0-0 16. Rfd1 Rfd8 17. Kf1 Kf7 18. Rab1 b6 19. Rbc1 Rxd1+ 20. Rxd1 Rd8 21. Rxd8 Nxd8 22. Ke2 Ke8 23. Kd3 Kd7 24. Kc4 Kc6 25. a4 Nb7 26. f3 a5 27. Bf2 Nd6+ 28. Kb3 Nb7 29. Kc4 g6 30. h3 h5 31. h4 Nd6+ 32. Kb3 Nb7 33. Kc4 1/2-1/2

[Event "EU-ch Schools U15"]
[Site "Rhodes"]
[Date "2022.04.23"]
[Round "3"]
[White "Andreev, Konstantin1111"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2176"]
[BlackElo "2056"]
[PlyCount "61"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 Nbd7 7. f4 e6 8. g4 Nc5 9. Bf3 e5 10. Nf5 Bxf5 11. gxf5 Qc7 12. Qe2 Ncd7 13. Be3 0-0-0 14. 0-0-0 Be7 15. Qg2 Rhg8 16. Kb1 Kb8 17. Qf2 Rc8 18. Na4 Qc6 19. b3 b5 20. Nb2 Nc5 21. Bxc5 dxc5 22. fxe5 Nxe4 23. Qe3 Nc3+ 24. Qxc3 Qb6 25. Rd7 Rc7 26. Rhd1 Rgc8 27. Qd3 c4 28. Qe4 Rc6 29. Rxe7 cxb3 30. axb3 Qf2 31. Rdd7 1-0

[Event "EU-ch Schools U15"]
[Site "Rhodes"]
[Date "2022.04.22"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Whelan, Joseph"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2056"]
[BlackElo "1488"]
[PlyCount "63"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 Nc6 3. d4 d6 4. c3 Nf6 5. Bd3 e5 6. h3 exd4 7. cxd4 d5 8. e5 Ne4 9. a3 Bf5 10. Qc2 Be7 11. 0-0 Qd7 12. Nc3 0-0-0 13. Be3 Qe6 14. Nxe4 Bxe4 15. Bxe4 dxe4 16. Qxe4 f5 17. Qc2 Rhg8 18. Rac1 g5 19. d5 Rxd5 20. Nd4 Qxe5 21. Nxc6 bxc6 22. Qxc6 Bd6 23. Rfd1 Qh2+ 24. Kf1 Rxd1+ 25. Rxd1 Rd8 26. Bxg5 Rf8 27. f4 Rf6 28. Bxf6 Qxf4+ 29. Qf3 Qc4+ 30. Kg1 Qe6 31. Bc3 Qg6 32. Bb4 1-0

[Event "EU-ch Schools U15"]
[Site "Rhodes"]
[Date "2022.04.21"]
[Round "1"]
[White "Moutaftsis, Efstratios"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "1079"]
[BlackElo "2056"]
[PlyCount "72"]
[EventDate "2022.04.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. a3 b5 8. Be2 Nbd7 9. Nb3 Bb7 10. Bf3 Qc7 11. Bf4 Be7 12. Qd2 0-0 13. 0-0-0 Ne5 14. Bg3 Rac8 15. Kb1 Nc4 16. Qd3 Nd7 17. Rhe1 Nde5 18. Bxe5 Nxe5 19. Qd4 Nc4 20. Qd3 Bf6 21. Nd4 Nxa3+ 22. bxa3 Qxc3 23. Qxc3 Rxc3 24. Kb2 Rfc8 25. Re2 R3c4 26. Red2 d5 27. exd5 exd5 28. Rd3 Bxd4+ 29. Rxd4 Rxc2+ 30. Kb1 Rxf2 31. Bxd5 Bxd5 32. Rxd5 g6 33. Rg5 Rcc2 34. Rg1 Rb2+ 35. Kc1 Ra2 36. Rg3 Ra1# 0-1

[Event "Primorsko op"]
[Site "Primorsko"]
[Date "2021.09.18"]
[Round "6"]
[White "Kostov, Kiril"]
[Black "Stefanov, Krasimir"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1876"]
[BlackElo "2362"]
[PlyCount "88"]
[EventDate "2021.09.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BUL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nc3 Nc6 7. Be3 g6 8. d5 Ne5 9. Bd4 Bh6 10. b3 0-0 11. Be2 Nbd7 12. g3 Nf6 13. f4 Ned7 14. Nf3 a5 15. 0-0 Nc5 16. Re1 Bg7 17. Bxc5 dxc5 18. Ne5 Ne8 19. Bf3 Nd6 20. Rc1 Re8 21. Qd2 Bf5 22. Na4 Qc7 23. Qf2 f6 24. Nxc5 fxe5 25. g4 Bc8 26. fxe5 Nf7 27. d6 exd6 28. exd6 Nxd6 29. Na4 Rf8 30. c5 Nb5 31. Bd5+ Kh8 32. Qxf8+ Bxf8 33. Re8 Kg7 34. Rf1 Bxc5+ 35. Kg2 Kh6 36. Bf3 Rb8 37. Nxc5 Bxg4 38. Rxb8 Bxf3+ 39. Rxf3 Qxc5 40. Rd8 Qc2+ 41. Rf2 Qe4+ 42. Kg1 Qe3 43. Rdd2 Nc3 44. Rc2 Ne4 0-1

[Event "Primorsko op"]
[Site "Primorsko"]
[Date "2021.09.14"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Shoshin, Kirill"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "1876"]
[BlackElo "2149"]
[PlyCount "75"]
[EventDate "2021.09.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BUL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. 0-0 c5 5. d3 d5 6. c4 a6 7. a4 bxc4 8. dxc4 d4 9. e3 Nc6 10. exd4 Nxd4 11. Nxd4 Bxg2 12. Kxg2 cxd4 13. Qf3 Rc8 14. b3 e6 15. Bf4 Bd6 16. Re1 0-0 17. Nd2 Bxf4 18. Qxf4 Qb6 19. Rad1 Rfd8 20. h4 Nd7 21. Nf3 Qxb3 22. Rxd4 Qb7 23. Kh2 Nc5 24. Ng5 h6 25. Rxd8+ Rxd8 26. Ne4 Nd3 27. Qd2 Nxe1 28. Qxe1 Qc6 29. Qa5 Rd4 30. Nd2 Qd6 31. c5 Qd5 32. Nf1 Qc6 33. Ne3 Rxa4 34. Qd8+ Kh7 35. Qd3+ f5 36. g4 Qxc5 37. gxf5 Qe5+ 38. Kg2 0-1

[Event "Arco op 42nd"]
[Site "Arco"]
[Date "2020.10.18"]
[Round "9.18"]
[White "Lezzerini, Marco"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "D36"]
[WhiteElo "2122"]
[BlackElo "1894"]
[PlyCount "108"]
[EventDate "2020.10.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Qc2 Nbd7 8. Bd3 Nh5 9. Bxe7 Qxe7 10. 0-0-0 g6 11. h3 b5 12. Bxb5 cxb5 13. Nxd5 Qd6 14. Nc7+ Kd8 15. Nxa8 Bb7 16. Nf3 Ke7 17. Kb1 Rxa8 18. d5 Rc8 19. Qe4+ Kf8 20. Rc1 Nhf6 21. Rxc8+ Bxc8 22. Qd4 Qxd5 23. Qxa7 Kg7 24. Rc1 Bb7 25. Qd4 Qf5+ 26. Ka1 Bxf3 27. gxf3 Qxf3 28. e4 Qf4 29. Rd1 Ne5 30. Qe3 Qxe3 31. fxe3 Nc4 32. e5 Nxe5 33. b3 Ned7 34. Rd4 Kf8 35. Rb4 Nd5 36. Rxb5 Nxe3 37. a4 Ke7 38. a5 Kd6 39. a6 Nd5 40. Rb8 f5 41. a7 N5b6 42. Kb2 f4 43. Kc2 g5 44. Kd2 h5 45. a8Q Nxa8 46. Rxa8 Nc5 47. b4 Ne4+ 48. Ke2 g4 49. h4 f3+ 50. Kf1 g3 51. Rd8+ Kc6 52. Rd1 Kb5 53. Rd5+ Kc4 54. Rxh5 Nd2+ 0-1

[Event "Arco op 42nd"]
[Site "Arco"]
[Date "2020.10.16"]
[Round "7.17"]
[White "Urh, Zala"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2195"]
[BlackElo "1894"]
[PlyCount "183"]
[EventDate "2020.10.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 Nbd7 8. Nge2 Nh5 9. Bxe7 Qxe7 10. g4 Nhf6 11. Ng3 g6 12. g5 Ng8 13. h4 h6 14. gxh6 Ndf6 15. Qe2 Rxh6 16. 0-0-0 Be6 17. Na4 Nd7 18. h5 gxh5 19. Nxh5 0-0-0 20. Nf4 Rxh1 21. Rxh1 b5 22. Bxb5 cxb5 23. Qxb5 Qd6 24. Kb1 Bf5+ 25. Ka1 Nb6 26. Rc1+ Kb7 27. Nc5+ Ka8 28. a4 Rb8 29. Na6 Bd7 30. Qc5 Qxc5 31. dxc5 Rc8 32. b3 Be6 33. Kb2 Nd7 34. b4 Nb8 35. Nxb8 Kxb8 36. b5 Nf6 37. Ka3 Ne4 38. Nd3 f6 39. Kb4 Rh8 40. c6 Nd2 41. Nf4 Rh4 42. Rd1 Ne4 43. f3 Ng5 44. Kc5 Bf7 45. a5 Nxf3 46. b6 a6 47. c7+ Kb7 48. Kd6 Ne5 49. Rc1 Rh8 50. Nxd5 Bxd5 51. Kxd5 Re8 52. e4 Kc8 53. Rf1 Nd7 54. Rc1 Ne5 55. Rh1 Nf7 56. Rh7 Re5+ 57. Kd4 Re7 58. Rg7 Kb7 59. Rg8 Nd6 60. Rb8+ Kc6 61. c8Q+ Nxc8 62. Rxc8+ Kb5 63. Rc5+ Kb4 64. Rd5 Rb7 65. Ke3 Ka4 66. Kf4 Rf7 67. Kf5 Re7 68. Rc5 Re8 69. b7 Rb8 70. Kxf6 Rxb7 71. e5 Kb4 72. Rd5 Kc4 73. Rd1 Rb2 74. e6 Kb5 75. Ra1 Rf2+ 76. Kg7 Kc6 77. Rd1 Kb5 78. e7 Re2 79. Kf7 Kxa5 80. e8Q Rxe8 81. Kxe8 Kb4 82. Kd7 a5 83. Kc6 a4 84. Rd4+ Kb3 85. Kb5 a3 86. Rd3+ Kb2 87. Kb4 a2 88. Rd2+ Kb1 89. Kb3 a1N+ 90. Kc3 Kc1 91. Rh2 Kb1 92. Rg2 1-0

[Event "Arco op 42nd"]
[Site "Arco"]
[Date "2020.10.15"]
[Round "6.33"]
[White "Kostov, Kiril"]
[Black "Wunderlich, Frank"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1894"]
[BlackElo "1772"]
[PlyCount "41"]
[EventDate "2020.10.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 d6 5. Nc3 Nf6 6. Bg5 Be7 7. Nxc6 bxc6 8. Bd3 0-0 9. Qd2 Ng4 10. Bxe7 Qxe7 11. 0-0-0 Ne5 12. Bf1 Be6 13. b3 f6 14. h4 a5 15. Na4 d5 16. f4 Qa3+ 17. Kb1 Rfb8 18. fxe5 Qxa4 19. exd5 Bxd5 20. exf6 g6 21. Qh6 1-0

[Event "Arco op 42nd"]
[Site "Arco"]
[Date "2020.10.14"]
[Round "5.18"]
[White "Astengo, Corrado"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2093"]
[BlackElo "1894"]
[PlyCount "79"]
[EventDate "2020.10.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 e6 8. f4 b5 9. Bb3 h6 10. Bh4 b4 11. Na4 Bb7 12. Qe2 g5 13. fxg5 Nxe4 14. Qh5 Nxg5 15. Nxe6 Qe7 16. 0-0-0 Nf6 17. Bxg5 hxg5 18. Qxh8 fxe6 19. Rhf1 Nd7 20. Qh5+ Kd8 21. Rf7 Qe8 22. Qxg5+ Kc7 23. Rdf1 d5 24. Qe3 Rc8 25. Nb6 Bh6 26. Qxh6 Kxb6 27. Qe3+ Nc5 28. Rf8 Qb5 29. h4 a5 30. a4 bxa3 31. bxa3 a4 32. Ba2 e5 33. R1f6+ Ka7 34. Rxc8 Bxc8 35. Bxd5 Bd7 36. h5 e4 37. h6 Bf5 38. Rxf5 Qb6 39. Rf7+ Kb8 40. Rb7+ 1-0

[Event "Arco op 42nd"]
[Site "Arco"]
[Date "2020.10.13"]
[Round "4.17"]
[White "Kostov, Kiril"]
[Black "Cardilli, Mariano"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "1894"]
[BlackElo "2087"]
[PlyCount "46"]
[EventDate "2020.10.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Nf3 Nd7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. 0-0-0 Be7 13. Kb1 0-0 14. Ne4 Nxe4 15. Qxe4 Nf6 16. Qe2 Qd5 17. Be3 b5 18. Ne5 Bd6 19. Bc1 Qe4 20. Qxe4 Nxe4 21. Nd3 Rfd8 22. g4 Be7 23. c3 Rac8 1/2-1/2

[Event "Arco op 42nd"]
[Site "Arco"]
[Date "2020.10.11"]
[Round "2.17"]
[White "Kostov, Kiril"]
[Black "Rozman, Monika"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1894"]
[BlackElo "2129"]
[PlyCount "64"]
[EventDate "2020.10.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. Nb5 Bxe3 7. fxe3 Qh4+ 8. g3 Qxe4 9. Nxc7+ Kd8 10. Nxa8 Nf6 11. Nc3 Qxh1 12. Qd2 Re8 13. 0-0-0 Qf3 14. e4 Nxe4 15. Nxe4 Qxe4 16. Qg5+ f6 17. Qxg7 Qg6 18. Qxg6 hxg6 19. Bb5 Ne5 20. Bf1 b6 21. Bg2 Ba6 22. b3 Kc8 23. Rd6 Re6 24. Rd4 Bb7 25. Bh3 f5 26. Rh4 Re8 27. Nxb6+ axb6 28. Kb2 Be4 29. Rh6 Re6 30. Bf1 Kc7 31. h4 Rd6 32. Kc3 Rc6+ 0-1

[Event "Primorsko op"]
[Site "Primorsko"]
[Date "2020.09.19"]
[Round "6"]
[White "Gromovs, Sergejs"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2198"]
[BlackElo "1878"]
[PlyCount "117"]
[EventDate "2020.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BUL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Qc7 7. 0-0 a6 8. Qe2 Bd6 9. Bg5 f6 10. Bh4 Nge7 11. Rfd1 Ng6 12. Bg3 Bxg3 13. hxg3 0-0 14. Rac1 Kh8 15. a3 Nge5 16. Ba2 Qb8 17. Nh4 g6 18. f4 Qa7+ 19. Kh2 Nf7 20. g4 g5 21. fxg5 Nxg5 22. Nf3 Rg8 23. Rf1 Nd4 24. Nxd4 Qxd4 25. g3 b5 26. Rcd1 Qe5 27. Qf2 Rg6 28. Qf4 Nf7 29. Nd5 Kg7 30. Nb6 Rb8 31. Nxd7 Qxf4 32. gxf4 Rb7 33. Bxe6 Rc7 34. Kg3 h5 35. Bf5 Bxd7 36. Rxd7 Rxd7 37. Bxd7 Nh6 38. Kh4 Nxg4 39. Bf5 Ne3 40. Rf2 Rg1 41. Bh3 Kg6 42. Re2 Nc4 43. Be6 Nd6 44. Bh3 Nc4 45. Rc2 Ne3 46. Rc6 Ng4 47. Rxa6 Kg7 48. Kxh5 Nf2 49. Ra7+ Kf8 50. Bf5 Nd3 51. Rb7 b4 52. axb4 Nxf4+ 53. Kh4 Nd3 54. b5 Nxb2 55. b6 Nc4 56. Be6 Nd6 57. Rd7 Ne8 58. b7 Rb1 59. b8Q 1-0

[Event "Primorsko op"]
[Site "Primorsko"]
[Date "2020.09.14"]
[Round "1"]
[White "Kostov, Kiril"]
[Black "Nikolov, Sasho"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1878"]
[BlackElo "2345"]
[PlyCount "66"]
[EventDate "2020.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BUL"]
[SourceTitle "CBM 198 Extra"]
[Source "ChessBase"]
[SourceDate "2020.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.11.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 a6 4. Nf3 Bg4 5. Be2 e6 6. a3 Nf6 7. Bg5 Be7 8. e5 Nfd7 9. Bxe7 Qxe7 10. b4 a5 11. Na2 axb4 12. axb4 0-0 13. 0-0 Na6 14. c3 Nc7 15. Qc1 Ra7 16. Qb2 Rfa8 17. h3 Bxf3 18. gxf3 Qg5+ 19. Kh2 f6 20. b5 cxb5 21. exf6 Nxf6 22. Rg1 Qf4+ 23. Kh1 e5 24. Rg3 b4 25. Qxb4 Rxa2 26. Rag1 Nh5 27. Rg4 Qf8 28. Qxb7 Rxe2 29. Qxc7 Qxf3+ 30. R4g2 Qxh3+ 31. Rh2 Ng3+ 32. Rxg3 Re1+ 33. Rg1 Rxg1+ 0-1

[Event "EU Union-ch U14"]
[Site "Kouty nad Desnou"]
[Date "2020.08.22"]
[Round "9"]
[White "Kostov, Kiril"]
[Black "Hak, David"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1815"]
[BlackElo "2125"]
[PlyCount "130"]
[EventDate "2020.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Nf6 8. Be3 cxd4 9. cxd4 Be7 10. Nc3 Qd6 11. a3 0-0 12. Rc1 Rfd8 13. b4 a6 14. Qb3 Bf8 15. Rfd1 Ne7 16. Ne5 Bxe2 17. Nxe2 Ned5 18. Ng3 Qe7 19. Nc4 Rd7 20. Bg5 h6 21. Bxf6 Qxf6 22. Ne4 Qd8 23. Na5 Nf6 24. Nc5 Rxd4 25. Naxb7 Rxd1+ 26. Qxd1 Qxd1+ 27. Rxd1 a5 28. b5 Rc8 29. Na6 a4 30. Kf1 Bxa3 31. Rd4 Rc1+ 32. Ke2 Nd5 33. Kd2 Rb1 34. Rxa4 Rxb5 35. Rxa3 Rxb7 36. Ra2 Rb5 37. Rc2 Nf4 38. g3 Ng6 39. f4 Rh5 40. Ke3 Ne7 41. Nc5 Nd5+ 42. Kf3 Nf6 43. Nd3 Ra5 44. Ne5 Ra3+ 45. Kg2 Ra8 46. Rc7 Rf8 47. Kf3 Nd5 48. Ra7 f6 49. Nd7 Rc8 50. Rb7 Rc3+ 51. Kg2 Rc2+ 52. Kh3 Ne3 53. Rb1 Kf7 54. Re1 Nd5 55. Ra1 Rc7 56. Nb8 Kg6 57. Re1 Kf5 58. Na6 Rc3 59. Kg2 Rc2+ 60. Kh3 g5 61. fxg5 hxg5 62. g4+ Kf4 63. Rxe6 Kf3 64. Rxf6+ Nxf6 65. Nc5 Nxg4 0-1

[Event "EU Union-ch U14"]
[Site "Kouty nad Desnou"]
[Date "2020.08.20"]
[Round "7"]
[White "Martinkova, Magdalena"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "1538"]
[BlackElo "1815"]
[PlyCount "72"]
[EventDate "2020.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Be3 Be7 8. Qd2 Nbd7 9. g4 h6 10. 0-0-0 Qc7 11. Rg1 b5 12. h4 Nh7 13. g5 hxg5 14. hxg5 g6 15. f4 Nb6 16. Rh1 b4 17. Ndb5 axb5 18. Nxb5 Qc6 19. Nxd6+ Kf8 20. Qd4 Bxd6 21. Qxh8+ Ke7 22. Rxh7 Nd7 23. Qd4 b3 24. axb3 Ra1+ 25. Kd2 Bc5 26. Qd3 Ba6 27. c4 Bxe3+ 28. Kxe3 Rxd1 29. Qxd1 Nc5 30. Qc2 Qb6 31. Kf3 Nxb3 32. Kg3 Qe3+ 33. Kg2 Bb7 34. Qc3 Bxe4+ 35. Kh2 Qf2+ 36. Kh3 Bf5# 0-1

[Event "EU Union-ch U14"]
[Site "Kouty nad Desnou"]
[Date "2020.08.19"]
[Round "6"]
[White "Kostov, Kiril"]
[Black "Lang, Simon"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1815"]
[BlackElo "1735"]
[PlyCount "44"]
[EventDate "2020.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. Nf3 Nf6 4. e5 Ne4 5. Qe2 Nxc3 6. dxc3 c5 7. h4 h6 8. Bd2 Nc6 9. h5 Bd7 10. Nh4 Be7 11. g3 Qc7 12. f4 0-0-0 13. 0-0-0 c4 14. Nf3 Qa5 15. Kb1 Kb8 16. Nd4 Ka8 17. Bg2 Rc8 18. Rdf1 Nxd4 19. cxd4 c3 20. Bxc3 Rxc3 21. bxc3 Ba3 22. Qe3 Qb6+ 0-1

[Event "EU Union-ch U14"]
[Site "Kouty nad Desnou"]
[Date "2020.08.18"]
[Round "5"]
[White "Winter, Ondrej"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1945"]
[BlackElo "1815"]
[PlyCount "81"]
[EventDate "2020.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 e6 5. Bd3 Nbd7 6. 0-0 Be7 7. Re1 Qc7 8. Bf1 a6 9. d4 b5 10. a4 b4 11. e5 dxe5 12. dxe5 Nd5 13. c4 Qc6 14. cxd5 exd5 15. Bg5 Bxg5 16. Nxg5 Nf8 17. Qf3 Be6 18. Nd2 Rc8 19. Qg3 h6 20. Nxe6 Nxe6 21. Nf3 0-0 22. Nh4 Nd4 23. Bd3 Qd7 24. Nf3 Nb3 25. Bxa6 Nxa1 26. Bxc8 Rxc8 27. Rxa1 c4 28. Nd4 Ra8 29. b3 c3 30. Qd3 Qc7 31. f4 g5 32. g3 Kh8 33. Kh2 Rg8 34. Rg1 Qc5 35. Rg2 Qe7 36. Qf5 Rg6 37. fxg5 hxg5 38. Rf2 Kg8 39. e6 Rh6 40. exf7+ Kf8 41. Qc8+ 1-0

[Event "EU Union-ch U14"]
[Site "Kouty nad Desnou"]
[Date "2020.08.17"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Backiel, Hubert"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "1815"]
[BlackElo "1943"]
[PlyCount "107"]
[EventDate "2020.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 Nf6 5. Nge2 d6 6. d3 Be7 7. h3 0-0 8. Be3 Rb8 9. a4 a6 10. g4 b5 11. axb5 axb5 12. Ng3 b4 13. Na4 Bb7 14. 0-0 Nd7 15. f4 Nb6 16. g5 Nxa4 17. Rxa4 Qd7 18. b3 Ra8 19. Rxa8 Rxa8 20. f5 Bf8 21. h4 d5 22. f6 g6 23. h5 Nd8 24. hxg6 fxg6 25. Qg4 Ra2 26. exd5 Bxd5 27. Bxd5 Qxd5 28. Rf2 Ra1+ 29. Rf1 Ra2 30. Ne4 Nf7 31. Rf2 Ra1+ 32. Kg2 Bd6 33. Qf3 Bf8 34. Nd2 Qd7 35. Nc4 e5 36. Qe4 Qe6 37. Re2 Rd1 38. Nb2 Rb1 39. Na4 Qc8 40. Qc4 Qc6+ 41. Qe4 Qc8 42. Kg3 Nd6 43. Qxe5 Nf5+ 44. Kf2 Bd6 45. Qd5+ Kh8 46. Bxc5 Bg3+ 47. Kg2 Qb8 48. Qe4 Nh4+ 49. Kh3 Be5 50. Qxe5 Rh1+ 51. Kg3 Nf5+ 52. Kg2 Qb7+ 53. Qe4 Rh2+ 54. Kxh2 1-0

[Event "EU Union-ch U14"]
[Site "Kouty nad Desnou"]
[Date "2020.08.16"]
[Round "3"]
[White "Janous, Marek"]
[Black "Kostov, Kiril"]
[Result "1/2-1/2"]
[ECO "B84"]
[WhiteElo "1968"]
[BlackElo "1815"]
[PlyCount "81"]
[EventDate "2020.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. 0-0 Nbd7 8. f4 Qc7 9. Bf3 Be7 10. Kh1 0-0 11. Qe1 Rd8 12. g4 Nb6 13. g5 Nfd7 14. f5 Ne5 15. Bg2 Bf8 16. Qg3 Nbc4 17. h4 Nc6 18. Nce2 e5 19. Nxc6 bxc6 20. b3 Nb6 21. Bb2 a5 22. c4 Rb8 23. Bc3 a4 24. h5 Nd7 25. b4 Ba6 26. Qd3 Kh8 27. Rab1 Rdc8 28. Rfd1 Qa7 29. Bd2 Qc7 30. Rdc1 Qd8 31. Nc3 Nb6 32. b5 cxb5 33. cxb5 Bb7 34. Nd5 Nxd5 35. exd5 Be7 36. Qe3 Qd7 37. Be4 Rxc1+ 38. Bxc1 Qc7 39. Bd2 Qd7 40. a3 Rc8 41. Qd3 1/2-1/2

[Event "EU Union-ch U14"]
[Site "Kouty nad Desnou"]
[Date "2020.08.15"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Kostov, Deyan Samuil"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "1815"]
[BlackElo "2119"]
[PlyCount "108"]
[EventDate "2020.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. d3 0-0 9. a3 Be6 10. b4 f6 11. Be3 Qd7 12. Ne4 Rad8 13. Bc5 Bd5 14. Bxe7 Nxe7 15. Nc5 Qc8 16. Qc2 g5 17. Nd2 Kh8 18. a4 Bxg2 19. Kxg2 Nbd5 20. b5 Nf5 21. Nc4 Rg8 22. e3 Nh4+ 23. Kh1 Nf3 24. Kg2 g4 25. e4 Ne7 26. Ne3 b6 27. Na6 c5 28. Qb3 Rg7 29. Rfc1 f5 30. h4 f4 31. Nc2 Qd7 32. Rd1 Ng6 33. h5 Nf8 34. gxf4 Nh4+ 35. Kf1 g3 36. f5 g2+ 37. Ke2 Qe8 38. f3 Qxh5 39. d4 exd4 40. Kf2 c4 41. Qa3 d3 42. Nd4 Kg8 43. Qc3 Rxd4 44. Qxd4 Qxf3+ 45. Kg1 Qh3 46. Qxc4+ Kh8 47. Qxd3 Nf3+ 48. Kf2 Qg3+ 49. Ke2 g1Q 50. Rxg1 Nxg1+ 51. Kd2 Qe5 52. Rc1 Nf3+ 53. Kc2 Rg2+ 54. Kd1 Rd2+ 0-1

[Event "EU Union-ch U14"]
[Site "Kouty nad Desnou"]
[Date "2020.08.14"]
[Round "1"]
[White "Valdman, Jakub"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "1443"]
[BlackElo "1815"]
[PlyCount "168"]
[EventDate "2020.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. Be3 Be7 8. 0-0 Nbd7 9. f4 Qc7 10. Bf3 Nb6 11. Bf2 0-0 12. Qe2 e5 13. fxe5 dxe5 14. Nf5 Bxf5 15. exf5 Rac8 16. Kh1 Nbd7 17. Rac1 b5 18. Bg3 Bd6 19. Rfd1 Rfe8 20. Qd3 Bb4 21. Ne4 Nxe4 22. Qxe4 Bf8 23. Qb7 Nc5 24. Qxc7 Rxc7 25. Re1 Rce7 26. Bf2 Rc7 27. Bxc5 Rxc5 28. Be4 Rd8 29. Rcd1 Rcc8 30. Rxd8 Rxd8 31. Bd3 f6 32. Kg1 Kf7 33. Re4 g6 34. Rh4 Kg7 35. Rg4 g5 36. h3 Bc5+ 37. Kf1 Bd4 38. b3 h5 39. Re4 Kf7 40. Ke2 Ke7 41. Kd2 Kd6 42. c3 Bg1 43. Kc2 Rc8 44. Kd2 Kc5 45. Kc2 Kb6 46. Kd2 Rc7 47. Re2 Bh2 48. Re4 a5 49. Kc2 Bg1 50. Kd2 Bh2 51. Kc2 Bf4 52. Re2 b4 53. c4 Kc5 54. Be4 Rg7 55. Bf3 g4 56. hxg4 hxg4 57. Bd5 Rh7 58. Re1 Rh5 59. Be6 Rh2 60. Bd5 g3 61. Rd1 Be3 62. Bf3 Bd4 63. Bd5 Kd6 64. Rd3 Rh5 65. Be4 Rh4 66. Bd5 Rg4 67. Rd1 Rf4 68. Be6 Kc5 69. Rd2 e4 70. Re2 e3 71. Kd3 Kd6 72. Bc8 Ke5 73. Be6 Rf1 74. Bc8 Ba7 75. Be6 Rd1+ 76. Kc2 Rd8 77. Kc1 Ke4 78. Kc2 Rh8 79. Re1 Bd4 80. Rd1 e2 81. Bd5+ Ke3 82. Rd3+ Kf2 83. Rf3+ Kxg2 84. Kd2 Kh2 0-1

[Event "Davos op 19th"]
[Site "Davos"]
[Date "2020.08.08"]
[Round "2"]
[White "Reinhardt, Bernd"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2198"]
[BlackElo "1815"]
[PlyCount "73"]
[EventDate "2020.08.07"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "SUI"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. e3 e6 4. Nbd2 Be7 5. Bd3 Nbd7 6. 0-0 c5 7. b3 b6 8. Bb2 Bb7 9. Qe2 Rc8 10. Rad1 0-0 11. Ne5 Ne4 12. Nxe4 dxe4 13. Bb5 Nb8 14. dxc5 Qc7 15. Nd7 f6 16. Nxf8 Bxf8 17. Bc4 Re8 18. Qg4 Qf7 19. cxb6 h5 20. Qf4 axb6 21. Bd4 Nc6 22. Bc3 Kh8 23. h4 Rc8 24. a4 Nd8 25. Rd2 Bc6 26. Rfd1 Be7 27. Ba6 Ra8 28. Qc7 Qf8 29. Rxd8 Bxd8 30. Qxc6 Be7 31. Bc4 e5 32. Rd7 Rd8 33. Rxd8 Qxd8 34. Bf7 Qd1+ 35. Kh2 Ba3 36. Qe8+ Kh7 37. Qg8+ 1-0

[Event "Davos op 19th"]
[Site "Davos"]
[Date "2020.08.07"]
[Round "1"]
[White "Kostov, Kiril"]
[Black "Strupat, Thomas"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1815"]
[BlackElo "1445"]
[PlyCount "41"]
[EventDate "2020.08.07"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "SUI"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nb5 Qxe4+ 6. Be2 Kd8 7. 0-0 Nf6 8. N1c3 Qe8 9. Bg5 Be7 10. Re1 d6 11. Bc4 Bd7 12. Nxc7 Kxc7 13. Nb5+ Kd8 14. Nxd6 Bxd6 15. Rxe8+ Rxe8 16. Qxd6 Ne5 17. Rd1 Kc8 18. Bf4 Bg4 19. f3 Bxf3 20. Bxe5 Rxe5 21. Qd8# 1-0

[Event "Arco op 41st"]
[Site "Arco"]
[Date "2019.10.12"]
[Round "9"]
[White "Welling, Gerard J"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2301"]
[BlackElo "1731"]
[PlyCount "47"]
[EventDate "2019.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. c3 Nbd7 6. Nbd2 b6 7. 0-0 Bb7 8. Ne5 Nxe5 9. dxe5 Nd7 10. f4 Be7 11. e4 Qc7 12. exd5 exd5 13. Qg4 g6 14. Nf3 0-0-0 15. f5 gxf5 16. Qxf5 Rdf8 17. Bh6 Re8 18. Qxf7 Nxe5 19. Nxe5 Qxe5 20. Rae1 Qd6 21. Bf5+ Kd8 22. Re6 Qd7 23. Rxe7 Qxe7 24. Bg5 1-0

[Event "Arco op 41st"]
[Site "Arco"]
[Date "2019.10.11"]
[Round "8"]
[White "Kostov, Kiril"]
[Black "Zum Felde, Michael"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1731"]
[BlackElo "2139"]
[PlyCount "67"]
[EventDate "2019.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. c3 e5 3. Nf3 Nc6 4. Bc4 Nf6 5. d3 Be7 6. 0-0 0-0 7. Be3 d5 8. exd5 Nxd5 9. Bb5 Nxe3 10. fxe3 Qb6 11. Bxc6 Qxc6 12. Nxe5 Qe6 13. Nc4 b5 14. Qf3 Bd7 15. Ncd2 Bc6 16. e4 Rad8 17. Nb3 f5 18. Qh3 Qd7 19. d4 Bxe4 20. N1d2 Bd5 21. Nf3 cxd4 22. Nbxd4 Bc5 23. Kh1 Rf6 24. Ne5 Qb7 25. Rf2 Be4 26. Rd2 Qb8 27. Qg3 Re8 28. Nd7 Qxg3 29. Nxf6+ gxf6 30. hxg3 a6 31. b4 Bb6 32. a4 Rc8 33. axb5 Rxc3 34. bxa6 1-0

[Event "Arco op 41st"]
[Site "Arco"]
[Date "2019.10.10"]
[Round "7"]
[White "Scheftlein, Richard"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2236"]
[BlackElo "1731"]
[PlyCount "101"]
[EventDate "2019.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 Nbd7 8. Nge2 Nh5 9. Bxe7 Qxe7 10. Qc2 g6 11. 0-0-0 Ndf6 12. h3 Ng7 13. Rhe1 0-0 14. Kb1 Bf5 15. Ng3 Bxd3 16. Qxd3 Rfe8 17. f3 Qc7 18. Nf1 Ne6 19. Qd2 Rad8 20. Qf2 b5 21. Ng3 Kg7 22. e4 dxe4 23. Ngxe4 Nxe4 24. fxe4 Qb6 25. Rf1 Rd7 26. Qf6+ Kg8 27. d5 Nd8 28. dxc6 Rxd1+ 29. Rxd1 Nxc6 30. Nd5 Qc5 31. Rc1 Qd4 32. Qxc6 Qxe4+ 33. Ka1 Kg7 34. Qf6+ Kg8 35. Qf3 Qxf3 36. gxf3 Re5 37. Rd1 Kg7 38. f4 Rh5 39. Rd3 g5 40. fxg5 Rxg5 41. Kb1 a5 42. a3 f5 43. Nc7 Kh6 44. Nxb5 f4 45. Nd4 Rd5 46. Kc2 a4 47. Nf3 Rc5+ 48. Rc3 Rh5 49. Rc6+ Kg7 50. h4 Rb5 51. Rc4 1-0

[Event "Arco op 41st"]
[Site "Arco"]
[Date "2019.10.09"]
[Round "6"]
[White "Kostov, Kiril"]
[Black "Dobboletta, Alex"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1731"]
[BlackElo "2176"]
[PlyCount "49"]
[EventDate "2019.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 d4 4. Ne2 c5 5. c3 Nf6 6. e5 Nfd7 7. cxd4 cxd4 8. Nexd4 Nxe5 9. Nxe5 Qxd4 10. Nf3 Qg4 11. g3 Bd7 12. Bg2 Qe4+ 13. Qe2 Qxe2+ 14. Kxe2 Bb5+ 15. d3 Nc6 16. Be3 Be7 17. Rhd1 0-0 18. Nd4 Nxd4+ 19. Bxd4 Rfd8 20. Bc3 Rd7 21. a4 Ba6 22. b4 Rc8 23. Rac1 Bf6 24. Bb2 Rcd8 25. Bxf6 1-0

[Event "Arco op 41st"]
[Site "Arco"]
[Date "2019.10.08"]
[Round "5"]
[White "Leutwyler, Martin"]
[Black "Kostov, Kiril"]
[Result "1/2-1/2"]
[ECO "D23"]
[WhiteElo "2163"]
[BlackElo "1731"]
[PlyCount "104"]
[EventDate "2019.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Qa4+ c6 5. Qxc4 Bf5 6. g3 e6 7. Bg2 Nbd7 8. 0-0 Be7 9. Nc3 Nb6 10. Qb3 h6 11. Rd1 0-0 12. Ne5 Bh7 13. e4 a5 14. a4 Bb4 15. f3 Qc7 16. Be3 Nfd7 17. Nd3 Be7 18. Rac1 Rfc8 19. Bh3 Qd8 20. Ne5 Kf8 21. Rd2 Bb4 22. Nd3 Bd6 23. Nc5 Qe7 24. Nd3 Bb4 25. Rdd1 Ra6 26. Bf1 Ra7 27. Na2 Bd6 28. Bf2 Bc7 29. Rd2 Qf6 30. Bg2 Qd8 31. Bh3 Nf6 32. Nc3 Kg8 33. Rcd1 Rb8 34. Nc5 Kh8 35. Rc1 Bg8 36. Nd3 Ne8 37. Rcd1 Nf6 38. Kg2 Kh7 39. Nc5 Raa8 40. Kg1 Kh8 41. Bg2 Nbd7 42. Nxd7 Qxd7 43. d5 exd5 44. exd5 cxd5 45. Nxd5 Nxd5 46. Rxd5 Qe8 47. Re1 Qc6 48. Rc5 Qd6 49. Rd1 Qe7 50. Rb5 f6 51. Qc2 Bh7 52. Qb3 Bg8 1/2-1/2

[Event "Arco op 41st"]
[Site "Arco"]
[Date "2019.10.07"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Behling, Robert"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "1731"]
[BlackElo "2062"]
[PlyCount "91"]
[EventDate "2019.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Nf3 Nd7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. 0-0-0 Be7 13. Ne4 Nxe4 14. Qxe4 Nf6 15. Qe2 Qd5 16. Kb1 Qe4 17. Be3 Ng4 18. Nd2 Qf5 19. Nc4 0-0-0 20. f3 Nxe3 21. Nxe3 Qf4 22. c3 Bg5 23. Nc4 Qf5+ 24. Qc2 Qxc2+ 25. Kxc2 Bf4 26. Rh4 Bg5 27. Re4 Rhe8 28. Ne5 Re7 29. f4 Bf6 30. Nf3 b5 31. g4 Rd5 32. Rg1 Rc7 33. g5 Bd8 34. Re5 f6 35. Rxd5 exd5 36. gxh6 gxh6 37. Rg6 Re7 38. Nd2 Re2 39. Kd3 Rh2 40. Rxh6 a5 41. Rh7 Bc7 42. Nf3 Rxb2 43. h6 Rb1 44. Rf7 Bd8 45. h7 Rh1 46. f5 1-0

[Event "Arco op 41st"]
[Site "Arco"]
[Date "2019.10.06"]
[Round "3"]
[White "Pasti, Aron"]
[Black "Kostov, Kiril"]
[Result "1/2-1/2"]
[ECO "B81"]
[WhiteElo "2083"]
[BlackElo "1731"]
[PlyCount "98"]
[EventDate "2019.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 d5 8. exd5 Nxd5 9. Nde2 h5 10. g5 Nc6 11. Nxd5 Qxd5 12. Qxd5 exd5 13. Be3 Be6 14. 0-0-0 0-0-0 15. Bg2 Be7 16. f4 g6 17. Rhe1 Rd7 18. Rd2 Kc7 19. Nd4 Nxd4 20. Bxd4 Rc8 21. Be5+ Kb6 22. Red1 Rcd8 23. Rd3 Ka7 24. c3 Ka8 25. a3 Ka7 26. Bd4+ b6 27. Be5 a5 28. b4 a4 29. Kd2 Ka6 30. Ke3 Ka7 31. Kf2 Ka6 32. Kg3 Ka7 33. Rd4 b5 34. Kf2 Ka6 35. Ke3 Kb6 36. R4d2 Ka6 37. Rd3 Kb6 38. Bd4+ Kc6 39. Rc1 Bf5 40. Rd2 Re8 41. c4 Bd6+ 42. Kf2 Bxf4 43. cxd5+ Kb7 44. d6+ Be4 45. Re2 Bxc1 46. Bxe4+ Kb8 47. Bc5 Bxg5 48. Kf3 Re6 49. Kg2 Bh6 1/2-1/2

[Event "Arco op 41st"]
[Site "Arco"]
[Date "2019.10.05"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Cardilli, Mariano"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "1731"]
[BlackElo "2078"]
[PlyCount "67"]
[EventDate "2019.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Nf3 Nd7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. 0-0-0 Be7 13. Kb1 0-0 14. Ne4 Nxe4 15. Qxe4 Nf6 16. Qe2 Qd5 17. Be3 a5 18. Ne5 Rad8 19. f3 Nd7 20. f4 Nxe5 21. fxe5 f5 22. Rhf1 Bg5 23. Bxg5 hxg5 24. g3 Qd7 25. c3 Rf7 26. g4 Rdf8 27. gxf5 Rxf5 28. Rxf5 Rxf5 29. Rg1 Qd5 30. Qe3 Qd8 31. Qe4 Qd5 32. Qe3 Qd8 33. Qe4 Qd5 34. Qe3 1/2-1/2

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.24"]
[Round "9"]
[White "Zelbova, Lada"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1491"]
[BlackElo "1678"]
[PlyCount "82"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nf3 c5 5. c3 Be7 6. Ne5 Nbd7 7. Nd2 Nxe5 8. dxe5 Nd7 9. h4 b6 10. Qg4 g6 11. Bd3 Bb7 12. Nf3 Qc7 13. 0-0-0 0-0-0 14. Kb1 a5 15. h5 c4 16. Bc2 b5 17. hxg6 hxg6 18. Ng5 Bxg5 19. Bxg5 Rde8 20. f4 b4 21. cxb4 axb4 22. Qe2 Nc5 23. Bf6 Rhf8 24. b3 Ba6 25. bxc4 Bxc4 26. Qd2 Qa5 27. Bb3 Nxb3 28. axb3 Bxb3 29. Rde1 Kd7 30. Qb2 Bc4 31. Reg1 Rc8 32. Qa1 Bd3+ 33. Kb2 Rc2+ 34. Kb3 Qb5 35. Qa7+ Rc7 36. Qd4 Rfc8 37. Rh7 Rc3+ 38. Kb2 Rc2+ 39. Kb1 Rd2+ 40. Qxd3 Qxd3+ 41. Ka1 Ra8# 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.23"]
[Round "8"]
[White "Kostov, Kiril"]
[Black "Lang, Simon"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1678"]
[BlackElo "1630"]
[PlyCount "117"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. a3 Bg4 8. Be2 dxe5 9. dxe5 e6 10. Qa4 Bh5 11. Bd2 Bc5 12. Nc3 Nxc3 13. Bxc3 Qb6 14. 0-0 0-0 15. b4 Bxf3 16. bxc5 Qxc5 17. Bb4 Qxe5 18. Bxf3 Nxb4 19. Qxb4 f5 20. Rfe1 Qf6 21. Qd6 Rae8 22. Qe5 Qh6 23. Bxb7 g5 24. Rac1 f4 25. Rc7 g4 26. Be4 Rf7 27. Rxf7 Kxf7 28. Bd5 Re7 29. Qf5+ Qf6 30. Qxf6+ Kxf6 31. Ba2 e5 32. Bb1 Rb7 33. Be4 Rc7 34. h3 gxh3 35. gxh3 Rc3 36. f3 Rxa3 37. Kf2 h6 38. Rc1 Ra2+ 39. Rc2 Ra5 40. h4 a6 41. Rc6+ Kg7 42. Rg6+ Kf7 43. Rxh6 Ra2+ 44. Kg1 Ra1+ 45. Kh2 a5 46. Rg6 a4 47. Rg1 Ra2+ 48. Rg2 Ra1 49. h5 a3 50. h6 a2 51. Bd5+ Kf6 52. Rxa2 Rxa2+ 53. Bxa2 Kg6 54. Bb1+ Kxh6 55. Kg2 Kg5 56. Kf2 Kf6 57. Ke2 Ke6 58. Kd3 Kd5 59. Ba2+ 1-0

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.22"]
[Round "7"]
[White "Lazniewska, Zofia"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1371"]
[BlackElo "1678"]
[PlyCount "117"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 e6 5. Bc2 Nbd7 6. d4 cxd4 7. cxd4 Be7 8. 0-0 a6 9. Nbd2 b5 10. a4 b4 11. Re1 Bb7 12. Nc4 Nxe4 13. Bxe4 Bxe4 14. Nxd6+ Bxd6 15. Rxe4 0-0 16. Bg5 Qa5 17. Rc1 Rac8 18. b3 Qd5 19. Re1 a5 20. h3 Qb7 21. Nd2 Rxc1 22. Qxc1 Rc8 23. Qd1 h6 24. Be3 Nb6 25. Qg4 Kh7 26. Qe4+ Qxe4 27. Nxe4 Be7 28. Rc1 f5 29. Rxc8 Nxc8 30. Nc5 Bxc5 31. dxc5 Kg6 32. Bf4 Ne7 33. Bc7 Nc6 34. f4 Kf6 35. Kf2 g6 36. Ke3 g5 37. g3 e5 38. fxe5+ Nxe5 39. Bxa5 Nc6 40. Bc7 Ke6 41. a5 Kd5 42. Bb6 Nb8 43. Ba7 Na6 44. Bb6 Nxc5 45. Bxc5 Kxc5 46. Kd3 h5 47. h4 gxh4 48. gxh4 Kb5 49. Ke3 Kxa5 50. Kf4 Kb5 51. Kxf5 Kc5 52. Ke5 Kc6 53. Kd4 Kb6 54. Kc4 Kc6 55. Kxb4 Kb6 56. Kc4 Ka5 57. Kc5 Ka6 58. Kd5 Kb5 59. Ke5 1-0

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.21"]
[Round "6"]
[White "Kostov, Kiril"]
[Black "Arshinkova, Boryana"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1678"]
[BlackElo "1383"]
[PlyCount "89"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 d5 4. exd5 Qxd5 5. d4 cxd4 6. cxd4 g6 7. Nc3 Qd8 8. d5 Nb4 9. Qa4+ Bd7 10. Qxb4 b6 11. Bb5 Bg7 12. 0-0 Nf6 13. Re1 a5 14. Bxd7+ Nxd7 15. Qe4 Nc5 16. Qe2 Bf6 17. Bg5 0-0 18. Bxf6 exf6 19. Rad1 Re8 20. Qxe8+ Qxe8 21. Rxe8+ Rxe8 22. Kf1 Kf8 23. a3 Re7 24. Nd4 Rd7 25. b4 axb4 26. axb4 Nb7 27. Ndb5 Ke7 28. Ne4 f5 29. Nec3 h5 30. Na4 Nd6 31. Nxd6 Rxd6 32. b5 h4 33. Nb2 g5 34. Nc4 Rd8 35. d6+ Ke6 36. d7 Rxd7 37. Rxd7 Kxd7 38. Nxb6+ Kc7 39. Nc4 g4 40. g3 hxg3 41. hxg3 f6 42. Ke2 Kd7 43. Ke3 f4+ 44. Kxf4 f5 45. Kxf5 1-0

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.20"]
[Round "5"]
[White "Magold, Filip"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "1859"]
[BlackElo "1678"]
[PlyCount "63"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 b5 8. g5 Nfd7 9. a3 Bb7 10. Qd2 Nb6 11. f3 N8d7 12. Qf2 Be7 13. h4 Rc8 14. 0-0-0 Nc4 15. Bxc4 Rxc4 16. Rdg1 Qc7 17. h5 Rxc3 18. bxc3 Qxc3 19. Nb3 Nc5 20. Bxc5 dxc5 21. g6 fxg6 22. hxg6 h6 23. Qg3 Bg5+ 24. Kb1 0-0 25. Qc7 Bf6 26. Kc1 c4 27. Nd2 Qa1+ 28. Nb1 Qb2+ 29. Kd2 Ba8 30. Rg2 Bg5+ 31. Rxg5 hxg5 32. Rh8+ 1-0

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.19"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Prieb, Robert"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1678"]
[BlackElo "1916"]
[PlyCount "52"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 e5 7. dxe5 Qxd1+ 8. Kxd1 Bg4 9. Bf4 Nge7 10. Bb5 0-0-0+ 11. Nbd2 Ng6 12. Bxc6 bxc6 13. Be3 Nxe5 14. Ke2 Bb4 15. h3 Bxf3+ 16. Nxf3 Nxf3 17. gxf3 Rhe8 18. Rad1 a6 19. Rhg1 Rxd1 20. Kxd1 g6 21. Rg4 Rd8+ 22. Kc2 Bd6 23. Rc4 Kc7 24. a4 Rb8 25. Bd2 Re8 26. Re4 Rxe4 1/2-1/2

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.18"]
[Round "3"]
[White "Rempe, Jonas"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B81"]
[WhiteElo "1923"]
[BlackElo "1678"]
[PlyCount "54"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 Be7 8. Bg2 h6 9. 0-0 Qc7 10. Nb3 Bd7 11. Be3 Bc6 12. f4 b5 13. Qd3 Nbd7 14. Ne2 Rd8 15. Ng3 Nb6 16. Qd4 Nc4 17. g5 e5 18. Qc3 Nxe4 19. Nxe4 Bxe4 20. Bxe4 d5 21. Bg2 d4 22. Nxd4 exd4 23. Bxd4 Rxd4 24. b3 Qb6 25. Kh1 b4 26. Qg3 Nd6 27. gxh6 Nf5 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.17"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Kanov, Nikola"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "1678"]
[BlackElo "2102"]
[PlyCount "113"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. Nf3 Nf6 4. e5 Nfd7 5. d4 c5 6. dxc5 Nc6 7. Bf4 Bxc5 8. Bd3 f6 9. exf6 Nxf6 10. 0-0 0-0 11. Bg3 Nh5 12. Bh4 Qe8 13. Re1 Nf4 14. Bg3 Qh5 15. Be2 Bd7 16. Qd2 Nxe2+ 17. Nxe2 Rae8 18. Rad1 Bb6 19. a3 Bc8 20. Nf4 Qf5 21. Nd3 h6 22. Nde5 Nxe5 23. Rxe5 Qg4 24. Re2 Qh5 25. Rde1 Bd7 26. Ne5 Bb5 27. Nd3 Bxd3 28. Qxd3 Rf6 29. Qb5 Ref8 30. c4 Qf7 31. c5 Bd8 32. f3 a6 33. Qd3 Bc7 34. Be5 Bxe5 35. Rxe5 Rc8 36. b4 Qd7 37. Qe3 Kf7 38. Qd4 Ra8 39. Qg4 g6 40. Rd1 Qa4 41. Rd3 a5 42. Rde3 Ra6 43. Qh4 h5 44. h3 axb4 45. Qxb4 Qxb4 46. axb4 Ra4 47. Rb3 Rf4 48. Rbe3 Raxb4 49. Rxe6 Rfc4 50. Re7+ Kf6 51. R7e6+ Kg7 52. Re7+ Kh6 53. Rc7 Rb5 54. Ree7 Rcxc5 55. Rxb7 Rxb7 56. Rxb7 Rc2 57. h4 1/2-1/2

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2019.08.16"]
[Round "1"]
[White "Barteckova, Denisa"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "1240"]
[BlackElo "1678"]
[PlyCount "134"]
[EventDate "2019.08.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Be3 b5 8. a3 Be7 9. Qd2 Bb7 10. 0-0-0 Nbd7 11. g4 Nb6 12. h4 Rc8 13. h5 Nfd7 14. Qf2 Nc4 15. Bxc4 Rxc4 16. Nb3 h6 17. Rd4 Bf6 18. Rxc4 bxc4 19. Nd4 0-0 20. Rg1 Nc5 21. Qd2 Kh7 22. g5 hxg5 23. Bxg5 Bxg5 24. Rxg5 Qf6 25. Rg1 Nd3+ 26. cxd3 Qxd4 27. Rd1 cxd3 28. Qxd3 Qxd3 29. Rxd3 Rd8 30. Ne2 Kh6 31. Ng3 Rc8+ 32. Kd2 d5 33. b3 Kg5 34. exd5 Bxd5 35. Ne2 Bc6 36. Ng3 f5 37. Ne2 e5 38. Rd6 Kxh5 39. Ke3 f4+ 40. Kf2 Kg5 41. Re6 Kf5 42. Rd6 g5 43. Rd1 Rh8 44. Rd3 Bb5 45. Rd6 Rh2+ 46. Kg1 Rxe2 47. a4 Be8 48. Rxa6 Rb2 49. Rb6 Bxa4 50. Rb4 Bxb3 51. Rb5 Rb1+ 52. Kg2 Bc2 53. Rc5 Rb2 54. Kg1 Bd1 55. Rc3 Rb3 56. Rc1 Bxf3 57. Kf2 g4 58. Re1 g3+ 59. Kg1 Rd3 60. Kf1 Rd1 61. Rxd1 Bxd1 62. Ke1 f3 63. Kf1 f2 64. Kg2 Be2 65. Kxg3 f1Q 66. Kh4 Qf4+ 67. Kh3 Bf1# 0-1

[Event "EU-ch Amateur U1700"]
[Site "Rhodes"]
[Date "2019.04.12"]
[Round "7.2"]
[White "Kostov, Kiril"]
[Black "Stathatos, Alexandros"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1625"]
[BlackElo "1184"]
[PlyCount "89"]
[EventDate "2019.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 Bc5 7. 0-0 0-0 8. Bg5 Re8 9. Nc3 Bb7 10. Re1 Be7 11. e5 Nd5 12. Bxe7 Qxe7 13. Qh5 h6 14. Qf5 g6 15. Nxd5 cxd5 16. Qh3 Kh7 17. f4 d6 18. e6 Bc8 19. f5 Qf6 20. exf7 Rxe1+ 21. Rxe1 Bxf5 22. Bxf5 gxf5 23. Rf1 f4 24. Qd3+ Kg7 25. Qxd5 Rf8 26. g3 Qxb2 27. Rxf4 Qc1+ 28. Rf1 Qxc2 29. Qd4+ Kh7 30. Qxa7 Qc4 31. Qf2 Qe6 32. Qc2+ Kg7 33. Qb2+ Kh7 34. Qc2+ Kg7 35. Qb2+ Kh7 36. Qf2 Kg7 37. a4 c5 38. a5 Qe7 39. Qb2+ Kh7 40. a6 c4 41. Qc2+ Kg7 42. Qxc4 Qa7+ 43. Rf2 Rb8 44. Qg4+ Kh7 45. Qd1 1-0

[Event "EU-ch Amateur U1700"]
[Site "Rhodes"]
[Date "2019.04.06"]
[Round "1.6"]
[White "Kakas, Michail"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B95"]
[BlackElo "1625"]
[PlyCount "62"]
[EventDate "2019.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GRE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Bd3 Be7 8. 0-0 Nbd7 9. Qe2 Qc7 10. Rad1 b5 11. Rfe1 Bb7 12. a4 bxa4 13. Nxa4 Qa5 14. Bxf6 Bxf6 15. e5 Bxe5 16. Be4 d5 17. Nc3 dxe4 18. Nxe4 Qc7 19. Nf3 0-0 20. Rxd7 Bxh2+ 21. Nxh2 Qxd7 22. Qg4 f5 23. Nc5 Qc6 24. Qf3 Qxc5 25. Qxb7 Qd5 26. Qe7 Rfe8 27. Qc7 Rac8 28. Qa7 Rxc2 29. Qxa6 Qd2 30. Rxe6 Qxf2+ 31. Kh1 Qxg2# 0-1

[Event "Arco op 40th"]
[Site "Arco"]
[Date "2018.10.21"]
[Round "9"]
[White "Rocchetti, Marco"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1808"]
[BlackElo "1576"]
[PlyCount "52"]
[EventDate "2018.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. Nd2 e6 4. e3 Be7 5. Ngf3 0-0 6. Bd3 c5 7. c3 Nbd7 8. h3 b6 9. 0-0 Bb7 10. Ne5 Rc8 11. Qe2 c4 12. Bb1 b5 13. a3 a6 14. Ndf3 Ne4 15. Nxd7 Qxd7 16. Ne5 Qd8 17. f3 Nd6 18. Qc2 f5 19. g4 Bg5 20. Bxg5 Qxg5 21. f4 Qh4 22. Qg2 Ne4 23. Bxe4 fxe4 24. Rf2 Rf7 25. Raf1 Rcf8 26. Qh2 Bc8 1-0

[Event "Arco op 40th"]
[Site "Arco"]
[Date "2018.10.20"]
[Round "8"]
[White "Kostov, Kiril"]
[Black "Wunderlich, Frank"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "1576"]
[BlackElo "1841"]
[PlyCount "78"]
[EventDate "2018.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nf6 6. d4 d5 7. Bg5 Be7 8. Bd3 0-0 9. Qd2 c6 10. 0-0-0 b5 11. Ne5 Ng4 12. Bxe7 Qxe7 13. Nxg4 Bxg4 14. f3 Bh5 15. g4 Bg6 16. h4 Bxd3 17. Qxd3 Re8 18. Kb1 Nd7 19. g5 Nb6 20. Rh2 Qe3 21. Qf5 g6 22. Qg4 Qe6 23. Qg3 Nc4 24. Re2 Qd6 25. Qe1 Kf8 26. Rxe8+ Rxe8 27. Qh1 Nxb2 28. Kxb2 Qb4+ 29. Kc1 Qxc3 30. Qh2 Qa1+ 31. Kd2 Qxd4+ 32. Kc1 Qb4 33. Qf2 Qf4+ 34. Kb1 Re3 35. Rf1 a5 36. Qg1 Qb4+ 37. Kc1 Qc3 38. Qg3 Re2 39. Qd6+ Kg7 0-1

[Event "Arco op 40th"]
[Site "Arco"]
[Date "2018.10.19"]
[Round "7"]
[White "Calcari, Manuel"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1739"]
[BlackElo "1576"]
[PlyCount "84"]
[EventDate "2018.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 e6 4. c3 Nf6 5. d3 a6 6. Bg5 Be7 7. 0-0 0-0 8. Re1 b5 9. Bb3 Bb7 10. Nbd2 Nc6 11. Bc2 Qc7 12. Rc1 Rac8 13. Bb1 Qb6 14. h3 Rfe8 15. Be3 Qd8 16. d4 cxd4 17. cxd4 d5 18. e5 Nd7 19. Nh2 Nf8 20. f4 Bb4 21. a3 Ba5 22. b4 Bb6 23. Nb3 a5 24. Nc5 Ba8 25. Qd3 axb4 26. axb4 Nxb4 27. Qb3 Ba5 28. Re2 Rb8 29. f5 Nc6 30. f6 gxf6 31. exf6 Ng6 32. Ng4 Rf8 33. Bh6 Nxd4 34. Bg7 Nxe2+ 35. Kf2 h5 36. Nh6+ Kh7 37. Qf3 Qd6 38. Kxe2 Qe5+ 39. Kf2 Qb2+ 40. Bc2 Qxc1 41. Qe2 Be1+ 42. Kf3 Qf4# 0-1

[Event "Arco op 40th"]
[Site "Arco"]
[Date "2018.10.17"]
[Round "5"]
[White "Wynarczyk, Raymond"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "1908"]
[BlackElo "1576"]
[PlyCount "51"]
[EventDate "2018.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. c4 a6 5. Bxd7+ Qxd7 6. d4 cxd4 7. Nxd4 Nf6 8. Nc3 e6 9. Bg5 Be7 10. 0-0 0-0 11. Qd3 Qc7 12. b3 Nbd7 13. f4 Nc5 14. Qf3 Qb6 15. Kh1 Ncd7 16. Rad1 Rac8 17. Qg3 Qa5 18. Qe1 Rfe8 19. Nd5 Qxa2 20. Nxe7+ Rxe7 21. e5 Qa3 22. exf6 gxf6 23. Nf5 exf5 24. Qxe7 fxg5 25. Qxd7 Rf8 26. Qxf5 1-0

[Event "Arco op 40th"]
[Site "Arco"]
[Date "2018.10.16"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Hilbenz, Guntram"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1576"]
[BlackElo "1913"]
[PlyCount "67"]
[EventDate "2018.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nf6 5. Bg5 Be7 6. Nc3 0-0 7. 0-0-0 Nc6 8. Qd2 Re8 9. Bb5 a6 10. Bxc6 bxc6 11. Kb1 Nd7 12. Bxe7 Qxe7 13. Nd4 Bb7 14. Nf5 Qf8 15. g4 Rad8 16. Qg5 Kh8 17. h4 Nc5 18. f3 Ne6 19. Qd2 Bc8 20. g5 Nc5 21. h5 Bxf5 22. exf5 Re5 23. Qf4 Rde8 24. f6 Ne6 25. Qa4 gxf6 26. g6 Qh6 27. Rdg1 Rxh5 28. Qxc6 Rf8 29. Rxh5 Qxh5 30. gxh7 Qxh7 31. f4 Qf5 32. Rh1+ Kg8 33. Qg2+ Ng7 34. Qh2 1-0

[Event "Arco op 40th"]
[Site "Arco"]
[Date "2018.10.14"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Astengo, Corrado"]
[Result "0-1"]
[ECO "B80"]
[WhiteElo "1576"]
[BlackElo "2114"]
[PlyCount "62"]
[EventDate "2018.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 Nf6 5. Nge2 Be7 6. d4 cxd4 7. Nxd4 a6 8. 0-0 Qc7 9. Be3 d6 10. h3 Bd7 11. f4 Rc8 12. g4 Nxd4 13. Bxd4 e5 14. fxe5 dxe5 15. Be3 Bc5 16. Bxc5 Qxc5+ 17. Kh1 Be6 18. Bf3 0-0 19. g5 Rfd8 20. Qe1 Nd7 21. Qh4 Nf8 22. Bg4 Ng6 23. Qh5 Nf4 24. Qh4 Rd2 25. Rad1 Rcd8 26. Bxe6 fxe6 27. g6 hxg6 28. Qg5 Qe3 29. Rxd2 Qxh3+ 30. Rh2 Qxf1+ 31. Qg1 Qf3+ 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.15"]
[Round "9"]
[White "Janous, Marek"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B99"]
[WhiteElo "1505"]
[BlackElo "1500"]
[PlyCount "98"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 0-0 9. 0-0-0 Qc7 10. g4 Nbd7 11. Kb1 b5 12. Bxf6 Nxf6 13. g5 Nd7 14. h4 Bb7 15. Bd3 Nc5 16. f5 b4 17. Nce2 e5 18. Nb3 Nxd3 19. Qxd3 f6 20. gxf6 Rxf6 21. h5 h6 22. Rhg1 a5 23. Rg6 Rxg6 24. hxg6 a4 25. Nbc1 Rc8 26. c3 Qc4 27. Qxc4+ Rxc4 28. Ng3 Bxe4+ 29. Nxe4 Rxe4 30. cxb4 Rxb4 31. Ne2 e4 32. a3 Rc4 33. Nc3 e3 34. Nd5 Bg5 35. Re1 Re4 36. Rc1 Re8 37. Re1 Re5 38. Rc1 Rxf5 39. Rc8+ Rf8 40. Rxf8+ Kxf8 41. Nc3 h5 42. Kc2 h4 43. Kd3 d5 44. Ne2 Ke7 45. Ng1 Bf6 46. Kxe3 Bxb2 47. Kd3 Bxa3 48. Kd4 Bc5+ 49. Kxc5 a3 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.14"]
[Round "8"]
[White "Kostov, Kiril"]
[Black "Prochazka, Vojtech"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "1500"]
[BlackElo "1554"]
[PlyCount "96"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. exd5 Qe7+ 9. Qe2 Qxe2+ 10. Bxe2 cxd5 11. 0-0 0-0 12. Bg5 Bxc3 13. bxc3 Ne4 14. Be3 Nxc3 15. Bd3 Be6 16. f3 a6 17. a4 Bd7 18. Ra3 Nxa4 19. Rfa1 Nb6 20. Bxb6 cxb6 21. Rxa6 Rxa6 22. Rxa6 Rb8 23. Ra7 Be6 24. Bb5 g6 25. Kf2 Rc8 26. Bd3 d4 27. Ra4 Rd8 28. g4 Kg7 29. g5 h6 30. h4 hxg5 31. hxg5 Rd5 32. f4 Rd7 33. Rb4 Rd6 34. Ra4 Bd7 35. Ra8 Bf5 36. Ra6 Bxd3 37. cxd3 f6 38. gxf6+ Kxf6 39. Kf3 Re6 40. Kg4 b5 41. Ra3 b4 42. Rb3 Rb6 43. Kf3 Kf5 44. Kg3 Re6 45. Kf2 Re3 46. Rxb4 Rxd3 47. Ke2 Re3+ 48. Kd2 Re4 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.13"]
[Round "7"]
[White "Grunert, Wilhelm"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1738"]
[BlackElo "1500"]
[PlyCount "74"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 0-0 10. 0-0-0 a5 11. Bb5 Na6 12. g4 Qc8 13. h4 Nc7 14. Kb1 Rd8 15. Qh2 Nxb5 16. Nxb5 a4 17. Nc1 Qc6 18. Na7 Qa6 19. h5 Bxg4 20. fxg4 Nxg4 21. Qg3 Nxe3 22. Rdg1 Bf8 23. Qxe3 Qxa7 24. Qh6 Kh8 25. Qg5 h6 26. Qg4 b5 27. Rf1 Qe7 28. Nd3 d5 29. exd5 Rxd5 30. Qe4 Rad8 31. Rf5 f6 32. Rg1 Rd4 33. Qe2 e4 34. Nf4 Qd7 35. Ng6+ Kg8 36. Rff1 Rd2 37. Qe1 Bc5 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.12"]
[Round "6"]
[White "Kostov, Kiril"]
[Black "Zumrik, Lukas"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1500"]
[BlackElo "1566"]
[PlyCount "68"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 d4 4. Ne2 c5 5. c3 Nc6 6. cxd4 Nf6 7. e5 Nd7 8. dxc5 Ndxe5 9. Nxe5 Nxe5 10. d4 Bxc5 11. Be3 Bb4+ 12. Nc3 Nc6 13. Be2 Qa5 14. Qb3 e5 15. dxe5 Qxe5 16. 0-0 Be6 17. Qc2 0-0 18. a3 Bc5 19. Bxc5 Qxc5 20. Qa4 Nd4 21. Bd1 b5 22. Qa5 a6 23. Ne4 Qc6 24. Qe1 Bc4 25. Nc3 Bxf1 26. Qxf1 Rfe8 27. a4 b4 28. Ne2 Qc4 29. Nxd4 Qxd4 30. Rb1 a5 31. b3 Rad8 32. h3 Qc3 33. Bf3 Re5 34. Be2 Rde8 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.11"]
[Round "5"]
[White "Kostov, Kiril"]
[Black "Kostov, Deyan Samuil"]
[Result "0-1"]
[ECO "B45"]
[WhiteElo "1500"]
[BlackElo "1934"]
[PlyCount "36"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Nxc6 bxc6 7. Bf4 d5 8. exd5 exd5 9. Bd3 Qb6 10. Qe2+ Be6 11. Rb1 Be7 12. f3 0-0 13. g4 Bb4 14. Bd2 Rfe8 15. Kd1 Bxc3 16. g5 Bxd2 17. gxf6 Bh6 18. fxg7 Bf5 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.10"]
[Round "4"]
[White "Pasti, Aron"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2018"]
[BlackElo "1500"]
[PlyCount "78"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c4 Nf6 4. Nc3 a6 5. d4 cxd4 6. Nxd4 e6 7. Be2 Be7 8. 0-0 0-0 9. Be3 b6 10. f4 Bb7 11. Bf3 Nbd7 12. e5 Bxf3 13. Qxf3 dxe5 14. Nc6 e4 15. Nxe4 Qe8 16. Rfe1 Nxe4 17. Nxe7+ Qxe7 18. Qxe4 Nc5 19. Qc2 Qc7 20. b4 Nd7 21. Rac1 Rac8 22. Qf2 Qb7 23. Bd4 Rfe8 24. Qg3 f6 25. c5 bxc5 26. bxc5 Qd5 27. Red1 Qf5 28. c6 Nf8 29. c7 Ng6 30. Bb6 Nxf4 31. Qf2 e5 32. Rd8 Qe6 33. Rcd1 Ne2+ 34. Kh1 Nd4 35. Bxd4 exd4 36. Qxd4 Rxc7 37. h3 Rce7 38. Rd6 Qxa2 39. Ra1 Qxa1+ 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.09"]
[Round "3"]
[White "Vilimek, Vit"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B87"]
[WhiteElo "1560"]
[BlackElo "1500"]
[PlyCount "133"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 Be7 8. Bc4 b5 9. Bb3 Bb7 10. Bxe6 fxe6 11. Nxe6 Qd7 12. Nxg7+ Kf7 13. Nf5 Bf8 14. Qd3 Nc6 15. f4 Nb4 16. Qe2 Bxe4 17. Nxe4 Qxf5 18. Ng5+ Kg8 19. 0-0 Nxc2 20. Rac1 Nxe3 21. Qxe3 Rc8 22. Qb3+ d5 23. Rxc8 Qxc8 24. Ne4 Kg7 25. Qg3+ Ng4 26. Nf2 Bc5 27. h3 Bxf2+ 28. Rxf2 Qc1+ 29. Rf1 Qe3+ 30. Qxe3 Nxe3 31. Rc1 Rf8 32. g3 d4 33. Kf2 Rf7 34. Ke2 Rd7 35. Kd3 b4 36. Rc6 a5 37. Rc5 a4 38. Ra5 Nd1 39. Kc2 Nc3 40. bxc3 d3+ 41. Kd1 bxc3 42. Rc5 c2+ 43. Kd2 Kf6 44. Rc4 h5 45. g4 hxg4 46. hxg4 Rd6 47. Rc5 Kg6 48. Rg5+ Kf6 49. Rh5 Kg7 50. Rc5 Kf6 51. a3 Kg6 52. Rc4 Kf6 53. Rc8 Kg6 54. f5+ Kg5 55. Rc4 Kf6 56. Rc8 Kg5 57. Rg8+ Kf6 58. Rh8 Kg7 59. Rh1 Rc6 60. Rg1 Kf6 61. Rh1 Kg5 62. Rf1 Kf6 63. Rc1 Rd6 64. Re1 Rc6 65. Rg1 Kg5 66. Rf1 Kf6 67. Rb1 0-1

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.08"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Smirnova, Jekaterina"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "1500"]
[BlackElo "1170"]
[PlyCount "61"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e5 5. Nge2 d6 6. 0-0 Bg4 7. h3 Bd7 8. d3 Be7 9. Be3 Nd4 10. f4 0-0 11. f5 b5 12. g4 b4 13. Nb1 a5 14. Ng3 Ba4 15. b3 Bc6 16. Bxd4 cxd4 17. g5 Ne8 18. h4 d5 19. Nd2 h6 20. f6 gxf6 21. gxh6 Kh7 22. Bh3 Bd7 23. Bxd7 Qxd7 24. Kh2 Rc8 25. Rc1 Bd8 26. Qf3 dxe4 27. Ndxe4 Qc6 28. Nh5 Kxh6 29. Nhg3 Kh7 30. Qh5+ Kg8 31. Nf5 1-0

[Event "EU Union-ch U12"]
[Site "Kouty nad Desnou"]
[Date "2018.08.07"]
[Round "1"]
[White "Konyves, Almos"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "1847"]
[BlackElo "1500"]
[PlyCount "49"]
[EventDate "2018.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. c4 d6 3. Ne2 Nf6 4. Nbc3 e6 5. d4 cxd4 6. Nxd4 a6 7. Be3 Be7 8. Bd3 Nbd7 9. 0-0 0-0 10. f4 Qc7 11. Rc1 b6 12. b4 Bb7 13. g4 Rac8 14. h4 Qd8 15. g5 Ne8 16. Nb3 Nc7 17. Qg4 d5 18. exd5 exd5 19. cxd5 Nxd5 20. Nxd5 Bxd5 21. Qf5 g6 22. Qxd5 b5 23. Bd4 Bxb4 24. h5 Be7 25. hxg6 1-0

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.29"]
[Round "9"]
[White "Kostov, Kiril"]
[Black "Isazaie, Navid"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "1125"]
[BlackElo "1664"]
[PlyCount "100"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Nf3 Nf6 9. Bd3 e6 10. Bxh7 Nxh7 11. Bf4 Nd7 12. Qd2 Be7 13. 0-0-0 Nhf6 14. c4 a5 15. Qc3 b5 16. Kb1 Qb6 17. c5 Qb7 18. Bc1 Nd5 19. Qd2 b4 20. Ne2 N7f6 21. Qc2 a4 22. Nd2 0-0 23. b3 axb3 24. Qxb3 Rfb8 25. Bb2 Qa6 26. Qc4 Nc3+ 27. Nxc3 Qxc4 28. Nxc4 bxc3 29. Nb6 Rxb6 30. cxb6 cxb2 31. Kxb2 Rb8 32. Kc2 Rxb6 33. f3 Ra6 34. Kb3 Nd5 35. Rd2 Kf8 36. a4 Ke8 37. Rc1 Bg5 38. Rcc2 Bxd2 39. Rxd2 Kd7 40. Rc2 Rb6+ 41. Ka3 Ne3 42. Re2 Nc4+ 43. Ka2 Kd6 44. Re4 Rb2+ 45. Ka1 Rxg2 46. Re1 Rg5 47. Rc1 Kd5 48. f4 Rf5 49. Rc2 Rxh5 50. a5 Kxd4 0-1

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.28"]
[Round "8"]
[White "Plitzner, Hans Joachim"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "1664"]
[BlackElo "1125"]
[PlyCount "69"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. d3 Be7 7. Nf3 Nc6 8. 0-0 0-0 9. a3 Be6 10. b4 a6 11. Bb2 f6 12. Qc2 Qd7 13. Rfd1 Rfd8 14. Rac1 Rac8 15. Ne4 Qe8 16. Nc5 Bxc5 17. bxc5 Nd5 18. d4 exd4 19. Nxd4 Nxd4 20. Rxd4 Qf7 21. Rcd1 Rd7 22. e4 Qg6 23. Qd2 Bg4 24. Rxd5 Bxd1 25. Rxd7 Ba4 26. Rd8+ Rxd8 27. Qxd8+ Be8 28. Qxc7 Bc6 29. Qd8+ Kf7 30. Qd4 Bb5 31. Bc1 Qg4 32. f3 Qc8 33. Bf4 Bc6 34. Bf1 b5 35. cxb6 1-0

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.27"]
[Round "7"]
[White "Kostov, Kiril"]
[Black "Cosmin Preda, Iulian"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1125"]
[BlackElo "1577"]
[PlyCount "125"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 d6 5. Nge2 Nf6 6. 0-0 Be7 7. d4 cxd4 8. Nxd4 e5 9. Nxc6 bxc6 10. h3 Be6 11. Bg5 h6 12. Be3 d5 13. exd5 cxd5 14. Ne2 Rc8 15. c3 Qd7 16. Kh2 0-0 17. f4 exf4 18. Nxf4 Bd6 19. Qd2 Bxf4 20. Bxf4 Kh7 21. Bxh6 Ne4 22. Bxe4+ dxe4 23. Qxd7 Bxd7 24. Be3 a6 25. Rad1 Bb5 26. Rf2 Bd3 27. Bd4 Rc6 28. Rdd2 Re6 29. Be3 a5 30. Rf5 Ra8 31. Rxf7 Kg6 32. Rb7 Rf8 33. Rb6 Rxb6 34. Bxb6 a4 35. Rf2 Re8 36. Be3 Bc4 37. a3 Rd8 38. Rf4 Bd3 39. Kg2 Bc2 40. Bd4 Rb8 41. c4 Rb3 42. Rg4+ Kf5 43. Bc3 Rb7 44. Rxg7 Rb8 45. Re7 Rc8 46. Re5+ Kg6 47. c5 Kf7 48. g4 Rc6 49. g5 Rc8 50. h4 Bb3 51. Kf2 Bc2 52. Ke3 Kg6 53. Kd4 Rd8+ 54. Rd5 Re8 55. c6 Bb3 56. Rd6+ Kf5 57. c7 e3 58. Rd8 Re4+ 59. Kc5 Rc4+ 60. Kb6 Rxc3 61. bxc3 Be6 62. c8Q Bxc8 63. Rxc8 1-0

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.26"]
[Round "6"]
[White "Sushrutha, Reddy"]
[Black "Kostov, Kiril"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1583"]
[BlackElo "1125"]
[PlyCount "87"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 Nc6 5. Bc2 Bg4 6. h3 Bh5 7. d3 e6 8. 0-0 Be7 9. Re1 0-0 10. Nbd2 Rb8 11. Nf1 b5 12. Ng3 Bg6 13. d4 a5 14. b3 Qb6 15. Be3 Qa6 16. Rc1 Rfd8 17. Qe2 c4 18. bxc4 bxc4 19. Nd2 d5 20. f4 h6 21. e5 Bxc2 22. exf6 Bd3 23. fxe7 Bxe2 24. exd8Q+ Rxd8 25. Nxe2 Rb8 26. Rb1 Rxb1 27. Rxb1 Qa7 28. Nf3 f6 29. Kf2 Qe7 30. Bc1 e5 31. fxe5 fxe5 32. dxe5 Nxe5 33. Nxe5 Qxe5 34. Rb2 Qf6+ 35. Kg1 Qf5 36. Be3 Qd3 37. Bd4 g6 38. Kh2 a4 39. Ng1 a3 40. Rf2 h5 41. Nf3 Qe4 42. Ne5 g5 43. Nd7 Qe6 44. Rf8+ 1-0

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.25"]
[Round "5"]
[White "Kostov, Kiril"]
[Black "Caddeo, Pierluigi"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "1125"]
[BlackElo "1532"]
[PlyCount "103"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. g3 Nf6 4. Bg2 Nc6 5. Nge2 e6 6. 0-0 Be7 7. d3 0-0 8. h3 Qc7 9. Be3 Re8 10. f4 Bd7 11. g4 h6 12. Ng3 Nd4 13. Nce2 Nxe2+ 14. Qxe2 Bc6 15. g5 hxg5 16. fxg5 Nh7 17. h4 d5 18. Nh5 dxe4 19. Qf2 Rf8 20. Bxc5 Bxc5 21. Qxc5 g6 22. Nf4 exd3 23. cxd3 Rfd8 24. d4 Nf8 25. Qc3 Rac8 26. Rac1 Qb6 27. Qc5 Qxb2 28. Qxa7 Qxd4+ 29. Qxd4 Rxd4 30. Bxc6 bxc6 31. Rcd1 e5 32. Nd3 Rcd8 33. Nf2 Rxd1 34. Rxd1 Rxd1+ 35. Nxd1 Nd7 36. Kf2 Kf8 37. Ke3 Ke7 38. Nc3 Kd6 39. Kd3 f6 40. Ne4+ Ke6 41. gxf6 Nxf6 42. Nxf6 Kxf6 43. a4 Ke6 44. a5 Kd7 45. Ke4 c5 46. Kxe5 Kc6 47. a6 Kb6 48. Kd5 Kxa6 49. Kxc5 Kb7 50. Kd6 Kc8 51. Ke7 Kc7 52. Kf6 1-0

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.24"]
[Round "4"]
[White "Kostov, Kiril"]
[Black "Huwaidi, Fahad"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "1125"]
[BlackElo "1544"]
[PlyCount "99"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 e5 6. 0-0 Nge7 7. d3 0-0 8. Be3 d6 9. f4 exf4 10. Bxf4 a6 11. Rb1 Be6 12. a3 Qd7 13. Be3 Bd4 14. Bxd4 cxd4 15. Nd5 Bxd5 16. exd5 Ne5 17. Nxd4 Rac8 18. h3 Qc7 19. c3 Qc5 20. Kh1 Qb6 21. Re1 Qc7 22. c4 Qb6 23. Nf3 Nf5 24. Nxe5 dxe5 25. g4 Ne3 26. Qd2 Nxg2 27. Qxg2 Qd6 28. b4 b6 29. Qg3 Rfe8 30. Qf3 f5 31. gxf5 Rf8 32. Rg1 Kh8 33. Qe3 Rxf5 34. Rg5 Rcf8 35. Rxf5 gxf5 36. Rf1 b5 37. Qc5 Qh6 38. Kh2 Qg7 39. cxb5 Rg8 40. Rg1 Qb7 41. Rxg8+ Kxg8 42. b6 Qd7 43. Qc6 Qf7 44. Qc8+ Kg7 45. Qc7 e4 46. Qxf7+ Kxf7 47. dxe4 fxe4 48. b7 e3 49. b8Q e2 50. Qe5 1-0

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.23"]
[Round "3"]
[White "Altea, Luca"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "B87"]
[WhiteElo "1523"]
[BlackElo "1125"]
[PlyCount "68"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 Be7 8. Bc4 b5 9. Bb3 Bb7 10. Qd2 0-0 11. 0-0 Nbd7 12. a3 Re8 13. Ba2 Nb6 14. Qf2 Nfd7 15. Rad1 d5 16. e5 Bc5 17. b4 Bxd4 18. Bxd4 Qc7 19. Rde1 Nc4 20. Bxc4 Qxc4 21. Nd1 a5 22. Nb2 Qc7 23. c3 axb4 24. axb4 Ra2 25. Re2 Rea8 26. Nd3 Qc4 27. Nf4 Rxe2 28. Qxe2 Ra2 29. Qe1 Nb6 30. Nh5 g6 31. Nf6+ Kg7 32. Bc5 Bc6 33. f4 d4 34. Qh4 Rxg2+ 0-1

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.23"]
[Round "2"]
[White "Kostov, Kiril"]
[Black "Abubakirov, Khumid"]
[Result "0-1"]
[ECO "C10"]
[WhiteElo "1125"]
[BlackElo "1587"]
[PlyCount "94"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 Ne7 3. Nc3 d5 4. d4 c6 5. Bd3 Ng6 6. a3 Nd7 7. Be3 Be7 8. 0-0 0-0 9. Nd2 Qc7 10. f4 f5 11. exf5 exf5 12. g3 Nf6 13. Qe1 Re8 14. Nf3 Bd6 15. Qc1 Be6 16. Ne5 Ne7 17. Qe1 Ne4 18. Rc1 b5 19. Ne2 Rf8 20. c3 a6 21. Rc2 c5 22. Nc1 c4 23. Be2 Rf6 24. Qd1 Rh6 25. Bf3 Rf8 26. Rg2 Nf6 27. Rff2 Ne4 28. Rc2 Rh3 29. g4 Bxe5 30. dxe5 Qd7 31. g5 Rd8 32. Bd4 Ng6 33. Bxe4 fxe4 34. Rcf2 Rf8 35. Qf1 Nh4 36. Rg3 Rxg3+ 37. hxg3 Bh3 38. Qe2 Bg4 39. Qc2 Nf3+ 40. Kh1 Nxd4 41. cxd4 Bf3+ 42. Kg1 Qh3 43. Rh2 Qxg3+ 44. Kf1 Rxf4 45. Rf2 Bg2+ 46. Ke1 Qe3+ 47. Qe2 Qxc1+ 0-1

[Event "World Amateur-ch U1700"]
[Site "Cagliari"]
[Date "2018.04.22"]
[Round "1"]
[White "Iovannone, Cristiano"]
[Black "Kostov, Kiril"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "1578"]
[BlackElo "1125"]
[PlyCount "74"]
[EventDate "2018.04.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. d3 Be6 9. a3 0-0 10. b4 f6 11. Bd2 Qd7 12. Qc2 Rfd8 13. Rfd1 Rac8 14. Rac1 Qe8 15. Be1 Qf7 16. Rd2 Bg4 17. e3 Qh5 18. Nh4 g5 19. Qb3+ Kg7 20. h3 gxh4 21. hxg4 Qxg4 22. f3 Qg5 23. gxh4 Qxe3+ 24. Kh2 Rxd3 25. Rxd3 Qxd3 26. Rd1 Qf5 27. Bf2 Rd8 28. Kg1 Kf8 29. Kh2 Bd6 30. Ne4 Nd4 31. Qa2 Qf4+ 32. Bg3 Nxf3+ 33. Bxf3 Qxf3 34. Bxe5 Bxe5+ 35. Ng3 Rd3 36. Qg2 Qxg2+ 37. Kxg2 Rxg3+ 0-1

