[Event "Dzhubga op"]
[Site "Dzhubga"]
[Date "2023.08.07"]
[Round "7"]
[White "Bimiev, Ahmad"]
[Black "Kostkin, Matvei"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "2230"]
[BlackElo "1714"]
[PlyCount "87"]
[EventDate "2023.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nc3 Nc6 7. d5 Na5 8. Qd3 c5 9. e4 Nd7 10. Bf4 b5 11. Nxb5 Ba6 12. a4 Bxb2 13. Ra2 Bg7 14. c4 Bc8 15. Bd2 a6 16. Bc3 Bxc3 17. Qxc3 Nxc4 18. Qxc4 axb5 19. axb5 Nb6 20. Qe2 Rxa2 21. Qxa2 Bd7 22. Rb1 Qc7 23. Qd2 Kg7 24. Qc3+ Kg8 25. Nd4 Rb8 26. Nc6 Bxc6 27. bxc6 Na4 28. Rxb8+ Qxb8 29. Qa5 Nb6 30. h4 c4 31. Qb4 Qa7 32. Bf1 Qa6 33. c7 Nc8 34. Qxc4 Qb6 35. Bh3 Qb1+ 36. Kg2 Nb6 37. c8Q+ Nxc8 38. Qxc8+ Kg7 39. Qc3+ Kg8 40. Qd4 Qe1 41. Qe3 Qd1 42. Qf3 Qd4 43. h5 g5 44. h6 1-0

[Event "Dzhubga op"]
[Site "Dzhubga"]
[Date "2023.08.05"]
[Round "5"]
[White "Saulina, Varvara"]
[Black "Kostkin, Matvei"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2073"]
[BlackElo "1714"]
[PlyCount "141"]
[EventDate "2023.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. c4 Be7 10. Be2 0-0 11. 0-0 a6 12. Nc3 Nd7 13. Be3 f5 14. f3 Bg5 15. Bf2 Bh4 16. g3 Be7 17. b4 h5 18. c5 h4 19. Qb3 hxg3 20. hxg3 Nf6 21. Na4 f4 22. Nb6 Rb8 23. Kg2 fxg3 24. Bxg3 Nh5 25. Nxc8 Nxg3 26. Kxg3 Bh4+ 27. Kh2 Rxc8 28. Rg1 Rf4 29. Rg2 Qf6 30. Rag1 g5 31. Rh1 e4 32. fxe4 Rf2 33. Qe3 Qe5+ 34. Kh3 Rcf8 35. Bg4 Rxg2 36. Kxg2 Rf2+ 37. Kh3 Rc2 38. Be6+ Kg7 39. Rd1 Rc3 40. Rd3 Rc4 41. Qf3 Rxe4 42. Qf7+ Kh6 43. Qf8+ Qg7 44. Qxg7+ Kxg7 45. cxd6 Bf2 46. d7 Bb6 47. a3 Rc4 48. Rf3 Rf4 49. Rc3 Rf8 50. Rc8 Rd8 51. Kg4 Kf6 52. Rc1 Ke7 53. Re1 a5 54. b5 Kd6 55. Kxg5 Bc5 56. a4 Bd4 57. Kg6 Bb6 58. Kf7 Rh8 59. Rc1 Bc7 60. Rc2 Rh7+ 61. Kf8 Rh4 62. Rc1 Rf4+ 63. Ke8 Rh4 64. Rg1 Rxa4 65. d8Q+ Bxd8 66. Kxd8 Rb4 67. Rg6 a4 68. Bf7+ Ke5 69. d6 a3 70. d7 a2 71. Bxa2 1/2-1/2

[Event "Dzhubga op"]
[Site "Dzhubga"]
[Date "2023.08.04"]
[Round "4"]
[White "Kostkin, Matvei"]
[Black "Gasanov, Vadim"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1714"]
[BlackElo "2107"]
[PlyCount "62"]
[EventDate "2023.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 e6 5. Nd2 Bd6 6. Nxe4 Bxf4 7. Nc5 Bd6 8. Nd3 Nd7 9. f4 0-0 10. Nf3 c5 11. c3 b6 12. Be2 Bb7 13. 0-0 f6 14. Kh1 Qe7 15. Nh4 g6 16. Rf3 Rf7 17. Rg3 Rg7 18. Qd2 Re8 19. Rf1 e5 20. Re1 a5 21. Rh3 Bc7 22. fxe5 fxe5 23. dxc5 Nxc5 24. Nxc5 bxc5 25. Bb5 Rf8 26. Nf3 e4 27. Ng1 Qe5 28. c4 d4 29. exd4 cxd4 30. Ne2 Rgf7 31. Ng3 e3 0-1

[Event "Dzhubga op"]
[Site "Dzhubga"]
[Date "2023.08.03"]
[Round "3"]
[White "Kuznetsov, Sergei"]
[Black "Kostkin, Matvei"]
[Result "0-1"]
[ECO "E73"]
[WhiteElo "1991"]
[BlackElo "1714"]
[PlyCount "98"]
[EventDate "2023.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5 Na6 7. Qd2 c6 8. Bh6 e5 9. Bxg7 Kxg7 10. Nf3 Qe7 11. 0-0 Bg4 12. h3 Bxf3 13. Bxf3 Nc7 14. d5 c5 15. a3 Nd7 16. b4 Na6 17. b5 Nc7 18. a4 f5 19. a5 Ne8 20. Rfe1 Kh8 21. exf5 gxf5 22. g3 Qg7 23. Kh2 Nef6 24. Rac1 Rae8 25. Ne2 Rg8 26. Rg1 e4 27. Bg2 Nh5 28. Nf4 e3 29. fxe3 Qxg3+ 30. Kh1 Nxf4 31. exf4 h6 32. Qc3+ Qxc3 33. Rxc3 Nf6 34. Bf3 Ne4 35. Rc2 Nf6 36. Rcg2 Rxg2 37. Rxg2 Kh7 38. Kg1 Re3 39. Kf2 Rc3 40. Rg1 Rxc4 41. Re1 Ne4+ 42. Bxe4 Rxe4 43. Rg1 Rxf4+ 44. Ke3 Re4+ 45. Kf3 c4 46. Rc1 Kg6 47. Rg1+ Kf7 48. Rc1 Kf6 49. Rc2 Ke5 0-1

[Event "Dzhubga op"]
[Site "Dzhubga"]
[Date "2023.08.01"]
[Round "1"]
[White "Zakaryan, David"]
[Black "Kostkin, Matvei"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2296"]
[BlackElo "1714"]
[PlyCount "32"]
[EventDate "2023.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. Re1 a6 6. Bxc6 dxc6 7. a4 a5 8. h3 Nf6 9. d3 0-0 10. Be3 Nd7 11. Qc1 f6 12. Nh2 Re8 13. Nd2 Nf8 14. Nc4 Ne6 15. Kh1 Nf4 16. h4 h5 1-0

