[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.15"]
[Round "9"]
[White "Kogan, Tatjana"]
[Black "Fedorovskii, Aleksandr"]
[Result "1/2-1/2"]
[ECO "E87"]
[WhiteElo "1785"]
[BlackElo "1295"]
[PlyCount "40"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 d6 4. e4 Bg7 5. f3 0-0 6. Be3 Nbd7 7. Qd2 e5 8. d5 b6 9. 0-0-0 Nc5 10. Bh6 Bd7 11. g4 Nxg4 12. fxg4 Bxg4 13. Be2 Qh4 14. Bxg7 Kxg7 15. Nf3 Bxf3 16. Bxf3 f5 17. Qe2 fxe4 18. Bxe4 Rf4 19. Rde1 Rf2 20. Qe3 Rxh2 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.14"]
[Round "8"]
[White "Mokin, Maxim"]
[Black "Kogan, Tatjana"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "1296"]
[BlackElo "1785"]
[PlyCount "90"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bd3 c5 8. dxc5 Bxc5 9. Qe2 Bd7 10. Bg5 h6 11. Be3 Qb6 12. Bxc5 Qxc5 13. 0-0 0-0 14. Qe5 Rac8 15. Rfe1 Qb6 16. Qd4 Qxd4 17. Nxd4 Nd5 18. c3 Nf6 19. f3 Bc6 20. Nxc6 Rxc6 21. Bc2 Rb6 22. Bb3 Rd8 23. Rad1 Rbd6 24. Rxd6 Rxd6 25. Rd1 Rxd1+ 26. Bxd1 Kf8 27. Kf2 Ke7 28. Ke3 Kd6 29. Kd4 e5+ 30. Kd3 Nd7 31. b4 g5 32. g4 Nf6 33. Bb3 Ke7 34. a3 h5 35. h3 hxg4 36. hxg4 e4+ 37. Ke3 exf3 38. Kxf3 Nd7 39. Ke4 f6 40. Kf5 Ne5 41. Ba2 Nd3 42. Kg6 Nf2 43. Kh5 Kf8 44. Kg6 Ke7 45. Kh5 Kf8 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.13"]
[Round "7"]
[White "Kogan, Tatjana"]
[Black "Tereschenko, Valerij"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "1785"]
[BlackElo "1958"]
[PlyCount "82"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd2 0-0 8. a3 Be7 9. e3 d5 10. cxd5 cxd5 11. Qc2 c5 12. Bd3 Bb7 13. 0-0 g6 14. Rab1 Rc8 15. Qa4 a6 16. Rfe1 Qc7 17. Bf1 Rfe8 18. Ne2 Ne4 19. Ba5 Qe5 20. Qd7 Bc6 21. Qg4 Bd6 22. Ng3 Rb8 23. f4 Qe7 24. Nxe4 Qxe4 25. Qe2 d4 26. Qd2 Qd5 27. exd4 cxd4 28. b4 Re4 29. Rxe4 Qxe4 30. Re1 Bxf4 31. Rxe4 Bxd2 32. Re7 Bc3 33. Kh1 Bb5 34. Bxb5 Rxb5 35. Bc7 Rd5 36. Re8+ Kg7 37. g4 d3 38. Re3 d2 39. Be5+ Rxe5 40. Rxe5 d1Q+ 41. Kg2 Qxg4+ 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.11"]
[Round "6"]
[White "Sadkovkin, Alexander"]
[Black "Kogan, Tatjana"]
[Result "1/2-1/2"]
[ECO "A85"]
[WhiteElo "1585"]
[BlackElo "1785"]
[PlyCount "41"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 0-0 6. e3 Ne4 7. Nxe4 fxe4 8. Nd2 d5 9. Qb3 Kh8 10. Rc1 c6 11. Be2 Bd6 12. Bg3 Qe7 13. c5 Bc7 14. Qd1 e5 15. 0-0 exd4 16. Bxc7 Qxc7 17. exd4 Bf5 18. Bg4 Bxg4 19. Qxg4 Nd7 20. Rc3 Rf6 21. Qg3 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.10"]
[Round "5"]
[White "Kogan, Tatjana"]
[Black "Litvinova, Evgenia"]
[Result "1/2-1/2"]
[ECO "A28"]
[WhiteElo "1785"]
[BlackElo "1666"]
[PlyCount "57"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. d4 exd4 5. Nxd4 Nxd4 6. Qxd4 Be7 7. Nd5 0-0 8. Nxe7+ Qxe7 9. Bg5 Qb4+ 10. Bd2 Qb6 11. Bc3 Qxd4 12. Bxd4 Ne4 13. f3 Ng5 14. e4 d6 15. Kd2 Bd7 16. Bd3 Ne6 17. Be3 Nc5 18. b4 Nxd3 19. Kxd3 a5 20. a3 b5 21. c5 dxc5 22. Bxc5 Rfd8 23. Kc2 Be6 24. Rhd1 a4 25. Rxd8+ Rxd8 26. Kc3 Bc4 27. Bd4 f6 28. Rd1 Kf7 29. Rd2 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.09"]
[Round "4"]
[White "Mukhtarov, Firgan"]
[Black "Kogan, Tatjana"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "1082"]
[BlackElo "1785"]
[PlyCount "68"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Be2 Be7 8. 0-0 h6 9. Be3 Nd5 10. Bd2 c6 11. c4 Nf6 12. b4 Bd7 13. a4 b6 14. b5 Ne4 15. bxc6 Bxc6 16. Be3 Nc3 17. Qc2 Nxe2+ 18. Qxe2 Bxf3 19. Qxf3 0-0 20. Qg3 Kh7 21. Rfd1 Qc8 22. Rdc1 Qd7 23. c5 bxc5 24. dxc5 Qc6 25. Bd4 Rg8 26. Qf4 Bg5 27. Qxf7 Bxc1 28. Rxc1 Qxa4 29. Be5 Qa2 30. h3 Raf8 31. Qb7 Qxf2+ 32. Kh2 Qe3 33. Qb1+ Kh8 34. Re1 Qg5 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.08"]
[Round "3"]
[White "Kogan, Tatjana"]
[Black "Malkov, Mikhail"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1785"]
[BlackElo "1220"]
[PlyCount "133"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 c5 3. e4 Nf6 4. d3 h6 5. Nf3 d6 6. Be2 Nc6 7. Qb3 Qa5 8. Bd2 Qb4 9. Qxb4 Nxb4 10. Rc1 Bg4 11. a3 Bxf3 12. gxf3 Nc6 13. Nd5 Nxd5 14. cxd5 Nd4 15. Be3 Nxe2 16. Kxe2 Be7 17. f4 f6 18. f5 b5 19. Rhg1 Kf7 20. b4 cxb4 21. axb4 a6 22. Ra1 Rhc8 23. Ra2 Rc3 24. Bd2 Rc7 25. Rga1 Bd8 26. Rxa6 Rxa6 27. Rxa6 Ke7 28. Ra2 Rb7 29. Be3 Bb6 30. Bxb6 Rxb6 31. Ra5 Kf7 32. Ra7+ Kf8 33. Rd7 Kg8 34. Kf3 h5 35. Ra7 Kh7 36. Kg3 Kh6 37. Ra8 Kh7 38. Ra5 Kh6 39. f4 exf4+ 40. Kxf4 Rb7 41. Ra6 Rc7 42. Rb6 Rc3 43. Ke3 Rc2 44. Rxb5 Rxh2 45. Rb6 h4 46. Kf3 Rh3+ 47. Kg4 Rg3+ 48. Kxh4 Rg1 49. Rxd6 g5+ 50. fxg6 Kxg6 51. b5 Rh1+ 52. Kg3 Rb1 53. b6 Kg5 54. Kf3 Rb2 55. Ke3 f5 56. exf5 Kxf5 57. Kd4 Rb4+ 58. Kc5 Rb3 59. Kc6 Rxd3 60. b7 Rb3 61. Kc7 Ke5 62. Rd7 Rc3+ 63. Kd8 Rb3 64. Kc8 Rc3+ 65. Rc7 Rxc7+ 66. Kxc7 Kxd5 67. b8Q 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.06"]
[Round "1"]
[White "Ditiatev, Sergey"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2198"]
[BlackElo "1785"]
[PlyCount "55"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Nh6 7. 0-0 Nf5 8. g4 Nfe7 9. dxc5 Qxc5 10. b4 Qb6 11. b5 Na5 12. Nbd2 Qc7 13. Nb3 Nxb3 14. axb3 Ng6 15. c4 dxc4 16. Bxc4 Nxe5 17. Bf4 Nxf3+ 18. Qxf3 Bd6 19. b6 Qxb6 20. Bxd6 Qxd6 21. Bb5+ Ke7 22. Qc3 Rg8 23. Rfd1 Qf4 24. Ra4 Qg5 25. Qc7+ Kf6 26. Rf4+ Kg6 27. Qxf7+ Kh6 28. Rd3 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.09"]
[Round "8"]
[White "Kogan, Tatjana"]
[Black "Polekhin, D."]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "1733"]
[PlyCount "54"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. d3 Bb4 4. Bd2 d6 5. e4 Bxc3 6. Bxc3 Nf6 7. Nf3 0-0 8. Be2 h6 9. h3 Ne7 10. Qc2 c5 11. Bd2 Bd7 12. Qc1 Ng6 13. b4 b6 14. b5 a6 15. a4 axb5 16. axb5 Qe7 17. Kd1 Nh5 18. Kc2 Nhf4 19. Bf1 f5 20. g3 fxe4 21. dxe4 Ne6 22. Rxa8 Rxa8 23. Kb2 Nd4 24. Bg2 Be6 25. Be3 Ra4 26. Nd2 Rb4+ 27. Kc3 Ne2+ 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.08"]
[Round "7"]
[White "Semin, Daniil"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "1967"]
[BlackElo "1733"]
[PlyCount "49"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 0-0 6. h3 d5 7. e3 c6 8. Bd3 Ne4 9. Qc2 Nd7 10. g4 Qa5 11. gxf5 exf5 12. Ne5 Bh4 13. Bxe4 fxe4 14. 0-0-0 Nxe5 15. dxe5 g5 16. Rhg1 h6 17. cxd5 cxd5 18. Rxd5 Qb4 19. Rd6 Kh7 20. Nd5 Qa5 21. Nf6+ Kh8 22. Qxe4 Qc7+ 23. Kb1 gxf4 24. Qg6 Bxf6 25. Qxh6+ 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.07"]
[Round "6"]
[White "Kogan, Tatjana"]
[Black "Khobotova, Olesia"]
[Result "1/2-1/2"]
[ECO "E83"]
[WhiteElo "1733"]
[BlackElo "2006"]
[PlyCount "85"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Qd2 e5 8. d5 Nd4 9. 0-0-0 c5 10. dxc6 bxc6 11. Bxd4 exd4 12. Qxd4 d5 13. cxd5 cxd5 14. e5 Nd7 15. f4 g5 16. g3 Nb6 17. Bg2 Bg4 18. Bf3 Be6 19. Nxd5 Nxd5 20. Bxd5 Rc8+ 21. Kb1 Qc7 22. Nf3 Qc2+ 23. Ka1 Rfd8 24. Bxe6 Rxd4 25. Nxd4 Qc5 26. Bxc8 Qxc8 27. Nf3 h6 28. Rhf1 Qg4 29. fxg5 hxg5 30. Rd8+ Kh7 31. Rd4 Qh5 32. g4 Qg6 33. Rd6 f6 34. exf6 Bf8 35. Rd5 Qe8 36. Nxg5+ Kg6 37. h4 Qe2 38. h5+ Kh6 39. Nf7+ Kh7 40. Rfd1 Qxg4 41. Nd6 Qf3 42. f7 a5 43. R5d3 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.06"]
[Round "5"]
[White "Kogan, Elvira"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1758"]
[BlackElo "1733"]
[PlyCount "20"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 e6 2. Nc3 f5 3. d4 Nf6 4. e3 Bb4 5. Be2 d5 6. Ne5 0-0 7. a3 Bxc3+ 8. bxc3 Ne4 9. Bb2 Qh4 10. Nf3 Qxf2# 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.05"]
[Round "4"]
[White "Kogan, Tatjana"]
[Black "Sadkovkin, Alexander1"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "1733"]
[PlyCount "35"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. d3 Bb4 4. Bd2 Nf6 5. e4 d6 6. Nd5 Bxd2+ 7. Qxd2 h6 8. Ne2 Bd7 9. Nec3 0-0 10. Be2 Ne7 11. Nxf6+ gxf6 12. Qxh6 Ng6 13. h4 Nf4 14. g3 Nxe2 15. Kxe2 Re8 16. f4 Re6 17. f5 Re8 18. Nd5 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.04"]
[Round "3"]
[White "Ryabov, Vyacheslav"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "1956"]
[BlackElo "1733"]
[PlyCount "55"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Ne2 Ngf6 6. N2g3 Nxe4 7. Nxe4 Nf6 8. Bd3 Nxe4 9. Bxe4 Bd6 10. Qg4 g6 11. Qf3 Rb8 12. Be3 0-0 13. h4 f5 14. Bd3 Be7 15. 0-0-0 Qd5 16. Qg3 Bd6 17. f4 Kf7 18. c4 Qa5 19. Kb1 h5 20. Bd2 Qa4 21. Qe3 b6 22. Bc3 c5 23. g4 Qc6 24. gxh5 gxh5 25. Rhg1 Qc7 26. dxc5 Bxc5 27. Rg7+ Ke8 28. Qf3 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.03"]
[Round "2"]
[White "Kogan, Tatjana"]
[Black "Semenov, Sergey"]
[Result "1/2-1/2"]
[ECO "E81"]
[WhiteElo "1733"]
[PlyCount "70"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 0-0 6. Be3 c6 7. Qd2 Nbd7 8. 0-0-0 Qc7 9. Bh6 e5 10. d5 a6 11. Kb1 c5 12. g4 Nb6 13. h4 Bd7 14. Qg5 Ne8 15. Bxg7 Nxg7 16. h5 f6 17. Qd2 g5 18. Bd3 h6 19. Nge2 Na4 20. Nxa4 Bxa4 21. Bc2 Bxc2+ 22. Qxc2 b5 23. b3 b4 24. Kc1 a5 25. Kd2 Qd7 26. Ra1 a4 27. Qb2 a3 28. Qc2 Rae8 29. Ng3 Qf7 30. Rae1 Rd8 31. Nf5 Nxf5 32. exf5 Rfe8 33. Qe4 Kg7 34. Kc2 Kf8 35. Kd1 Kg7 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.02"]
[Round "1"]
[White "Martynyuk, Elizaveta"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2048"]
[BlackElo "1733"]
[PlyCount "67"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bd3 c5 8. dxc5 Bxc5 9. 0-0 Qb6 10. h3 Bd7 11. Ne5 Bb5 12. c4 Bc6 13. Nxc6 Qxc6 14. Qe2 Rd8 15. Bg5 Be7 16. Rad1 h6 17. Bh4 0-0 18. f4 Rfe8 19. Rd2 Nd7 20. Bxe7 Rxe7 21. Be4 Qc7 22. Rfd1 Rde8 23. Qf3 Nc5 24. Bc2 Rb8 25. b4 Nd7 26. Qe3 b6 27. Rd4 Nf6 28. Qe5 Qxe5 29. fxe5 Ne8 30. Rd8 Rxd8 31. Rxd8 Kf8 32. c5 f6 33. Bg6 fxe5 34. c6 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.11"]
[Round "9"]
[White "Burkin, Oleg"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "C10"]
[BlackElo "1649"]
[PlyCount "66"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bg5 h6 8. Bd2 c5 9. Bc3 Ne4 10. Bb5+ Bd7 11. Qd3 Nxc3 12. bxc3 Bxb5 13. Qxb5+ Qd7 14. Qxd7+ Kxd7 15. Ne5+ Ke8 16. Ke2 Bd6 17. Nc4 Be7 18. Rhd1 Rd8 19. a4 f6 20. a5 Kd7 21. a6 b5 22. dxc5+ Kc7 23. Na5 Bxc5 24. Rxd8 Rxd8 25. Nb7 Rd5 26. c4 bxc4 27. Nxc5 Rxc5 28. Kd2 c3+ 29. Kd3 Rc6 30. h4 Kb6 31. h5 Rc5 32. g4 f5 33. Ra4 Kb5 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.10"]
[Round "8"]
[White "Dichev, Vasily"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "1897"]
[BlackElo "1649"]
[PlyCount "123"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. g3 d5 5. Bg2 c6 6. cxd5 exd5 7. 0-0 Be7 8. Nbd2 0-0 9. Ne5 Qb6 10. Ndf3 Ne4 11. Qc2 Nd7 12. e3 Qc7 13. Nxd7 Bxd7 14. Ne5 Bd6 15. Nxd7 Qxd7 16. f3 Nf6 17. Bh3 g6 18. e4 dxe4 19. fxe4 Bc7 20. Qc4+ Kg7 21. exf5 b5 22. Qc3 Bb6 23. Be3 Kh8 24. Bg2 Nd5 25. Bxd5 Qxd5 26. fxg6 hxg6 27. Rac1 Rfe8 28. Bf2 Re6 29. Rfe1 Rae8 30. Rxe6 Rxe6 31. a3 Kg8 32. b4 Rf6 33. Rd1 Qf5 34. Qe3 Re6 35. Qd3 Qd5 36. Rd2 Kf7 37. Be3 Kg8 38. Bf4 Kh7 39. Be3 Qf3 40. Bf2 Qd5 41. h4 Kg7 42. Kh2 Rf6 43. Qe3 Re6 44. Qd3 Rf6 45. Be3 Rf3 46. Qe2 Bc7 47. Bf2 Rf7 48. Qg4 Rf5 49. Re2 Qd7 50. Kg1 Rf7 51. Qxd7 Rxd7 52. Re6 Bb6 53. Rxc6 Rd5 54. Kg2 Rf5 55. g4 Rf7 56. Be3 Re7 57. Kf3 Rf7+ 58. Ke4 Re7+ 59. Kd3 Kf7 60. Bf4 Rd7 61. Be5 Re7 62. Rf6+ 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.09"]
[Round "7"]
[White "Kogan, Tatjana"]
[Black "Komissarova, Oksana"]
[Result "0-1"]
[ECO "D82"]
[WhiteElo "1649"]
[BlackElo "1925"]
[PlyCount "42"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 d5 4. Bf4 Bg7 5. Nb5 Na6 6. c5 0-0 7. Qc1 c6 8. Nc3 Bf5 9. a3 b6 10. e3 Nb8 11. b4 bxc5 12. bxc5 Nh5 13. Nge2 Nd7 14. h3 Nxf4 15. exf4 Rb8 16. f3 Qa5 17. g4 Bd3 18. Qe3 Nxc5 19. Kf2 Bxe2 20. Bxe2 Nb3 21. Ra2 Bxd4 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.08"]
[Round "6"]
[White "Gavrilichev, Aleksandr"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2025"]
[BlackElo "1649"]
[PlyCount "51"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Ne2 Ngf6 6. N2g3 Be7 7. Bd3 Nxe4 8. Nxe4 Nf6 9. 0-0 Qd5 10. Re1 0-0 11. c3 c5 12. Nxc5 Bxc5 13. dxc5 Qxc5 14. Be3 Qh5 15. f3 b6 16. Bf4 Qc5+ 17. Kh1 Bb7 18. Be5 Qe7 19. Bd6 Qd8 20. Bxf8 Qxf8 21. Qc2 Qc5 22. Rad1 g5 23. Qe2 Qe7 24. Qe5 h6 25. Bc2 Nd7 26. Qc7 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.07"]
[Round "5"]
[White "Kogan, Tatjana"]
[Black "Mytarev, Oleg V"]
[Result "1-0"]
[ECO "D60"]
[WhiteElo "1649"]
[BlackElo "1965"]
[PlyCount "117"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. Qb3 c6 6. Nf3 Nbd7 7. e3 0-0 8. Bd3 b6 9. cxd5 exd5 10. Bf5 Bb7 11. 0-0 h6 12. Bh4 Ne4 13. Bxe7 Qxe7 14. Bxd7 Qxd7 15. Nxe4 dxe4 16. Ne5 Qe7 17. Ng6 Qg5 18. Nxf8 Rxf8 19. f4 exf3 20. Rxf3 c5 21. Rg3 Qe7 22. Rd1 cxd4 23. Rxd4 Rc8 24. Qd1 Qc5 25. Rd8+ Rxd8 26. Qxd8+ Kh7 27. Qd3+ Kg8 28. Qc3 Qf8 29. Rg4 f6 30. Rd4 Qe7 31. Qd2 Bc6 32. Qc1 Kh7 33. Qc2+ g6 34. Kf2 Be8 35. Qe4 Qf7 36. Qd5 Qc7 37. Qd8 Qc2+ 38. Kg3 Bf7 39. Qxf6 Qc7+ 40. Qd6 Qc1 41. Qf4 Be6 42. h3 h5 43. Re4 Qc8 44. Qd6 Bf7 45. Re7 Kg8 46. Qf6 Qb8+ 47. Kf2 Qf8 48. Rd7 Bxa2 49. Qxf8+ Kxf8 50. Rxa7 Bc4 51. Kg3 b5 52. Kf4 Kg8 53. g3 Kf8 54. e4 Bf1 55. h4 Bd3 56. e5 Ke8 57. Kg5 Bf5 58. Kf6 Kd8 59. e6 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.06"]
[Round "4"]
[White "Timofeev, Vladimir F"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2222"]
[BlackElo "1649"]
[PlyCount "61"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bg5 Be7 8. Bd3 Nd5 9. Bd2 c5 10. dxc5 Bxc5 11. 0-0 Qb6 12. Qe2 Bd7 13. Ne5 Nf6 14. b4 Bd4 15. Nc4 Qc7 16. c3 Bb6 17. a4 a6 18. Nxb6 Qxb6 19. Be3 Qd8 20. c4 h6 21. Rfd1 Qc7 22. Bd4 Qf4 23. Be5 Qg4 24. Qxg4 Nxg4 25. Bxg7 Rg8 26. Bb2 Ke7 27. b5 Nf6 28. Ba3+ Ke8 29. Be2 Rd8 30. Bf3 Bc8 31. Bd6 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.05"]
[Round "3"]
[White "Kogan, Tatjana"]
[Black "Zudochkina, Margarita"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "1649"]
[PlyCount "59"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 d6 3. d4 Nd7 4. dxc5 Nxc5 5. b4 Ne4 6. Qd4 Ngf6 7. Ng5 Bf5 8. Nxe4 Bxe4 9. f3 e5 10. Qf2 Bxb1 11. Rxb1 d5 12. cxd5 Qxd5 13. e3 Rd8 14. Qd2 e4 15. Qxd5 Nxd5 16. Bd2 exf3 17. gxf3 Be7 18. Bb5+ Kf8 19. e4 Nc7 20. Ba4 Bh4+ 21. Ke2 Ke7 22. Rhd1 Ne6 23. Be3 Rd6 24. Rxd6 Kxd6 25. Rd1+ Ke7 26. Rd7+ Kf6 27. f4 g5 28. f5 Nf4+ 29. Kf3 Rc8 30. Bd4# 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.04"]
[Round "2"]
[White "Khozhanov, Khazhanurat"]
[Black "Kogan, Tatjana"]
[Result "1/2-1/2"]
[ECO "A94"]
[WhiteElo "1952"]
[BlackElo "1649"]
[PlyCount "93"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 e6 2. g3 f5 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. c4 d5 7. b3 c6 8. Ba3 Ne4 9. Bxe7 Qxe7 10. e3 Nd7 11. Nbd2 Ndf6 12. Nxe4 Nxe4 13. Ne5 Nf6 14. a3 Nd7 15. f4 Nxe5 16. dxe5 b6 17. b4 Ba6 18. b5 Bb7 19. bxc6 Bxc6 20. cxd5 Bxd5 21. Bxd5 exd5 22. Qxd5+ Kh8 23. Rfd1 Rfd8 24. Qb3 Rxd1+ 25. Rxd1 Rd8 26. Rd4 g5 27. Qd3 Rxd4 28. exd4 gxf4 29. gxf4 Qh4 30. Qg3 Qd8 31. Qe3 Qg8+ 32. Kf2 Qa2+ 33. Kf3 Qd5+ 34. Kg3 Qg8+ 35. Kf2 Qa2+ 36. Qe2 Qd5 37. e6 Qxd4+ 38. Qe3 Qxe3+ 39. Kxe3 Kg7 40. Kd4 Kf6 41. Kd5 Ke7 42. Ke5 b5 43. Kxf5 a5 44. Ke5 b4 45. axb4 axb4 46. f5 b3 47. f6+ 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.03"]
[Round "1"]
[White "Kogan, Tatjana"]
[Black "Popelyshev, Igor Viktorovich"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "1649"]
[BlackElo "2111"]
[PlyCount "66"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N5c3 f5 7. Nd5 Nf6 8. Nbc3 Be6 9. Bg5 Be7 10. Nxe7 Nxe7 11. Bxf6 gxf6 12. e3 h5 13. Qa4+ Qd7 14. Qxd7+ Kxd7 15. Rd1 a6 16. b3 h4 17. Na4 Kc7 18. Rc1 Rad8 19. f3 Kb8 20. Nc3 d5 21. cxd5 Nxd5 22. Nxd5 Rxd5 23. Bc4 Rc5 24. Kd2 Rd8+ 25. Ke2 Rdc8 26. Kd2 Bxc4 27. bxc4 Rxc4 28. Rxc4 Rxc4 29. g3 Ra4 30. Ra1 h3 31. Kc3 Ra3+ 32. Kd2 b5 33. f4 e4 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.08"]
[Round "9"]
[White "Loginov, Anton"]
[Black "Kogan, Tatjana"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2176"]
[BlackElo "1613"]
[PlyCount "17"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bg5 Be7 8. Bd3 b6 9. Ne5 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.07"]
[Round "8"]
[White "Kogan, Tatjana"]
[Black "Khobotova, Olesia"]
[Result "0-1"]
[ECO "E83"]
[WhiteElo "1613"]
[BlackElo "2006"]
[PlyCount "102"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nc6 7. Qd2 e5 8. d5 Ne7 9. Bh6 Ne8 10. h4 f5 11. h5 f4 12. hxg6 hxg6 13. Qf2 Nf6 14. Bxg7 Kxg7 15. 0-0-0 a6 16. Qd2 Bd7 17. Bd3 b5 18. cxb5 axb5 19. b4 Qb8 20. Nh3 c5 21. dxc6 Nxc6 22. Nd5 Rc8 23. Kb1 Qa7 24. Nhxf4 exf4 25. Nxf6 g5 26. Nxd7 Qxd7 27. e5 Rh8 28. Rxh8 Rxh8 29. Bxb5 Qf5+ 30. Qd3 Qxd3+ 31. Rxd3 Nxe5 32. Rxd6 Rb8 33. Rd5 Kf6 34. Kc2 g4 35. fxg4 Nxg4 36. Rd6+ Ke5 37. Rg6 Ne3+ 38. Kc3 Rxb5 39. Rg5+ Nf5 40. a4 Rb8 41. a5 Ke4 42. a6 Nd6 43. Rg4 Nb5+ 44. Kc4 Na7 45. Rg7 Rc8+ 46. Kb3 Ra8 47. Re7+ Kd5 48. Rb7 Nc6 49. b5 Na5+ 50. Kb4 Nxb7 51. axb7 Rb8 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.05"]
[Round "6"]
[White "Kogan, Tatjana"]
[Black "Leonov, Kirill"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "1613"]
[PlyCount "69"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. d4 e4 5. Ng5 Qe7 6. Nb5 d5 7. c5 h6 8. Nh3 a6 9. Nc3 Rb8 10. Bf4 Nh5 11. Bg3 Nxg3 12. hxg3 Qf6 13. e3 b6 14. Nf4 bxc5 15. Nfxd5 Qd8 16. dxc5 Bxc5 17. Qc2 Bf5 18. Bxa6 0-0 19. a3 Re8 20. Bb5 Re6 21. Nf4 Rd6 22. Rd1 Ne5 23. Rxd6 Qxd6 24. b4 Ba7 25. Qd2 Nd3+ 26. Bxd3 exd3 27. 0-0 g5 28. Nh3 Qe6 29. b5 Rd8 30. Kh2 Bc5 31. e4 Bxh3 32. gxh3 Bxa3 33. Nd5 Kg7 34. Qc3+ Kh7 35. Qxa3 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.05"]
[Round "7"]
[White "Logarchuk, Yury"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "C10"]
[BlackElo "1613"]
[PlyCount "120"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Bd3 Ngf6 6. Nf3 Nxe4 7. Bxe4 Nf6 8. Qd3 Nxe4 9. Qxe4 Qd5 10. Qd3 c5 11. Be3 c4 12. Qc3 a5 13. a3 b5 14. b3 cxb3 15. cxb3 b4 16. Qc4 bxa3 17. 0-0 Bb4 18. Qxd5 exd5 19. Bc1 Ba6 20. Bxa3 Bc3 21. Rfc1 Bxa1 22. Rxa1 f6 23. Bc5 Bb5 24. Re1+ Kd8 25. Re7 Rg8 26. h3 a4 27. bxa4 Bxa4 28. Nh4 Bc2 29. Nf3 Ra4 30. Kh2 Be4 31. Ng1 Ra5 32. Rb7 Kc8 33. Re7 Rb5 34. Ra7 Kb8 35. Kg3 Rb7 36. Ra5 Kc7 37. Ne2 Rb3+ 38. f3 Bd3 39. Nf4 Bc4 40. Ne6+ Kc6 41. Ra7 Rb7 42. Ra5 Re8 43. Nf4 Rb2 44. h4 g5 45. Nh5 Ree2 46. hxg5 Rxg2+ 47. Kf4 fxg5+ 48. Ke5 Rbe2+ 49. Kf6 Ref2 50. Kg7 Rxf3 51. Nf6 Ra2 52. Rxa2 Bxa2 53. Nxh7 g4 54. Ng5 Re3 55. Bb4 g3 56. Nh3 Rd3 57. Be1 Kb5 58. Kf6 Kc4 59. Kf5 g2 60. Bf2 Rxh3 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.03"]
[Round "5"]
[White "Fedotov, Nikita"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "A91"]
[WhiteElo "1904"]
[BlackElo "1613"]
[PlyCount "73"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Be7 5. Nh3 0-0 6. 0-0 d5 7. Nf4 c6 8. Qc2 Qe8 9. Nd2 Nh5 10. Nd3 Nd7 11. Nf3 Bd6 12. Nfe5 Nxe5 13. dxe5 Be7 14. Bd2 g5 15. b4 f4 16. a4 Bd7 17. Rab1 Rc8 18. Qc3 b5 19. axb5 dxc4 20. Qxc4 cxb5 21. Qb3 Qd8 22. Ra1 Qb6 23. Nc5 Rfd8 24. Ra6 Bxc5 25. Rxb6 Bxb6 26. Bf3 Ng7 27. gxf4 gxf4 28. Bxf4 Nf5 29. e3 Kh8 30. Kh1 Rg8 31. Be4 Nh4 32. f3 Ng6 33. Bg5 Rgf8 34. Bf6+ Kg8 35. Rg1 Kf7 36. Qd3 Nxe5 37. Bxe5 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.02"]
[Round "4"]
[White "Kogan, Tatjana"]
[Black "Litvinov, Boris"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "1613"]
[BlackElo "1964"]
[PlyCount "70"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 d6 2. d4 g6 3. Nc3 Bg7 4. e4 Nc6 5. Be3 e5 6. d5 Nce7 7. Be2 Nh6 8. c5 0-0 9. cxd6 cxd6 10. Nb5 a6 11. Nc3 b5 12. b4 f5 13. f3 Bd7 14. Qd2 Nf7 15. a4 bxa4 16. Nxa4 Bb5 17. Nc3 Qd7 18. Bxb5 axb5 19. Qb2 Bh6 20. Bxh6 Nxh6 21. Nh3 fxe4 22. Rxa8 Rxa8 23. fxe4 Qa7 24. Nf2 Qe3+ 25. Kf1 Rf8 26. Ncd1 Qxe4 27. Nc3 Qc4+ 28. Ke1 Nxd5 29. Nfe4 Nxc3 30. Nxc3 d5 31. Ne2 d4 32. Rf1 Rxf1+ 33. Kxf1 Nf5 34. Qa1 Ne3+ 35. Kf2 Qd5 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.01"]
[Round "3"]
[White "Rashidov, Alexandr"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1984"]
[BlackElo "1613"]
[PlyCount "40"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 f5 3. Nbd2 Nf6 4. Ne5 d5 5. Ndf3 Be7 6. Bg5 0-0 7. e3 Nbd7 8. c3 c6 9. Be2 Qc7 10. Nxd7 Bxd7 11. Ne5 Bd6 12. 0-0 Ne4 13. Nxd7 Qxd7 14. Bh4 g5 15. Bg3 Nxg3 16. fxg3 Rae8 17. Qd2 Qe7 18. Bh5 Rd8 19. Qd3 g4 20. h4 Bxg3 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.07.30"]
[Round "2"]
[White "Kogan, Tatjana"]
[Black "Semin, Daniil"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "1613"]
[BlackElo "1945"]
[PlyCount "62"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. g3 0-0 8. Bg2 c5 9. Ne2 Nc6 10. Be3 Qa5 11. 0-0 Rd8 12. Qd3 Ne5 13. Qc2 Nc4 14. Qc1 Bg4 15. f3 Bd7 16. Bf2 Bb5 17. Re1 Rac8 18. dxc5 Ne5 19. Nf4 Nd3 20. Nxd3 Rxd3 21. Re3 Rcd8 22. Rxd3 Rxd3 23. Bd4 Rxd4 24. cxd4 Bxd4+ 25. Kh1 Bxa1 26. Qxa1 Qd2 27. a4 Bxa4 28. Bh3 Qd1+ 29. Qxd1 Bxd1 30. f4 Ba4 31. Kg1 Bc6 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.07.30"]
[Round "1"]
[White "Tsapulin, Anatoly"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "A95"]
[WhiteElo "2173"]
[BlackElo "1613"]
[PlyCount "71"]
[EventDate "2012.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 f5 3. g3 Nf6 4. Bg2 d5 5. 0-0 Be7 6. c4 c6 7. Nc3 0-0 8. Qb3 Ne4 9. Nd2 Nxc3 10. bxc3 Nd7 11. f3 Qb6 12. e4 fxe4 13. fxe4 Rxf1+ 14. Nxf1 dxc4 15. Qxc4 Ne5 16. Qb3 Qxb3 17. axb3 Ng6 18. h4 Bd6 19. h5 Ne7 20. Bf4 Bxf4 21. gxf4 g6 22. Ng3 Kf7 23. Kf2 a6 24. hxg6+ Nxg6 25. Rh1 Kg7 26. Nh5+ Kf7 27. e5 h6 28. Be4 Ne7 29. Rg1 Nf5 30. Bxf5 exf5 31. Rg7+ Kf8 32. c4 b5 33. d5 bxc4 34. e6 Bxe6 35. dxe6 Re8 36. Rf7+ 1-0

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "5"]
[White "Anikina, Maria"]
[Black "Kogan, Tatjana"]
[Result "1/2-1/2"]
[ECO "D10"]
[WhiteElo "1937"]
[BlackElo "1794"]
[PlyCount "53"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 e6 5. Bf4 Nf6 6. e3 Nc6 7. a3 Be7 8. Bd3 h6 9. Nf3 Bd6 10. Bxd6 Qxd6 11. 0-0 0-0 12. Re1 Rd8 13. Rc1 a6 14. h3 b6 15. Bc2 Bb7 16. Qd3 b5 17. b4 e5 18. dxe5 Nxe5 19. Nxe5 Qxe5 20. Red1 Rac8 21. Bb3 Qg5 22. f3 Re8 23. Kf2 Qh4+ 24. Kg1 Qg5 25. Kf2 Qh4+ 26. Kg1 Qg5 27. Kf2 1/2-1/2

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "7"]
[White "Kazarian, Irina"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C10"]
[BlackElo "1794"]
[PlyCount "54"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nc3 Be7 7. Bd3 0-0 8. Bg5 c5 9. 0-0 h6 10. Bf4 cxd4 11. Nb5 a6 12. Nbxd4 Bc5 13. Nb3 Nd5 14. Qd2 Be7 15. Bxh6 N7f6 16. Qg5 g6 17. Bxf8 Bxf8 18. Ne5 Bg7 19. Ng4 Bd7 20. Nh6+ Kf8 21. Ng4 Nxg4 22. Qxg4 Nf6 23. Qb4+ Kg8 24. Qxb7 a5 25. Rfd1 Qe8 26. Qb6 Bc6 27. Nxa5 Rc8 1-0

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "1"]
[White "Koblik, Ekaterina"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C01"]
[BlackElo "1794"]
[PlyCount "87"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Bd6 5. Nc3 c6 6. g3 Bg4 7. Bg2 Qe7+ 8. Be3 Nf6 9. 0-0 0-0 10. Re1 Qc7 11. Qd3 Nbd7 12. Rad1 Rfe8 13. Re2 Re7 14. Rde1 Rae8 15. Qd2 Bxf3 16. Bxf3 Qb6 17. Na4 Qc7 18. Nc5 b6 19. Nxd7 Nxd7 20. Bf4 Rxe2 21. Rxe2 Rxe2 22. Bxe2 Bxf4 23. Qxf4 Qxf4 24. gxf4 Kf8 25. c4 Nf6 26. cxd5 Nxd5 27. Bf3 Ne7 28. a4 Ke8 29. b4 Kd7 30. Kf1 Kd6 31. Ke2 c5 32. dxc5+ bxc5 33. b5 Nc8 34. Kd3 g6 35. a5 f5 36. Kc4 h6 37. Bb7 Ne7 38. a6 Kc7 39. Kxc5 Nc8 40. Bxc8 Kxc8 41. Kc6 Kb8 42. h4 Kc8 43. b6 axb6 44. a7 1-0

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "2"]
[White "Kogan, Tatjana"]
[Black "Polkhovskaya, Natalia"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "1794"]
[PlyCount "81"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 Nbd7 5. e3 c6 6. Nf3 Qa5 7. c5 Ne4 8. Qc2 Nxc3 9. Qxc3 Qxc3+ 10. bxc3 b6 11. cxb6 axb6 12. Be2 Be7 13. 0-0 0-0 14. Rfc1 Nf6 15. Bd3 Ba6 16. Bf1 Bxf1 17. Kxf1 Ne4 18. Ke2 Ra3 19. Ke1 Nxc3 20. Rc2 Bb4 21. Kf1 Rc8 22. Rb2 Ba5 23. Rb3 Rxa2 24. Rxa2 Nxa2 25. Ne5 Nb4 26. Nd7 h6 27. Bd6 Rd8 28. Bxb4 Rxd7 29. Bxa5 bxa5 30. Rb8+ Kh7 31. Ra8 Rb7 32. Rxa5 Rb1+ 33. Ke2 Rb7 34. Kf3 g5 35. Rc5 Rb6 36. h3 f5 37. g3 Kg6 38. g4 Kf6 39. Kg3 e5 40. h4 f4+ 41. Kh3 1/2-1/2

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "4"]
[White "Kogan, Tatjana"]
[Black "Shokurova, Elena"]
[Result "1-0"]
[ECO "D51"]
[WhiteElo "1794"]
[PlyCount "88"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 Be7 6. Nf3 c6 7. a3 a5 8. Be2 h6 9. Bf4 0-0 10. 0-0 Re8 11. Ne5 Nxe5 12. Bxe5 Nd7 13. Bg3 b6 14. h3 Bb7 15. cxd5 exd5 16. Bg4 Nf6 17. Rb1 c5 18. dxc5 bxc5 19. Bf3 Qd7 20. Ne2 Ra7 21. Be5 Rd8 22. Qc2 d4 23. exd4 Bxf3 24. gxf3 cxd4 25. Bxd4 Raa8 26. Bxf6 Bxf6 27. Rfd1 Qxh3 28. Rxd8+ Rxd8 29. Qe4 Rd6 30. Qg4 Qxg4+ 31. fxg4 Rd2 32. Nc3 Bd4 33. Nd1 Kf8 34. b4 axb4 35. axb4 Rc2 36. Ne3 Rc8 37. Kf1 Rb8 38. Ke2 Ke7 39. Kd3 Ba7 40. Ke2 Kd6 41. Nf5+ Kc6 42. Nxg7 Kd6 43. Nf5+ Kc6 44. b5+ Kc5 1-0

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "6"]
[White "Kogan, Tatjana"]
[Black "Veselova, Natalia"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "1794"]
[PlyCount "80"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. Nf3 Nd7 5. Bf4 dxc4 6. e3 b5 7. Be2 Ngf6 8. 0-0 Be7 9. a4 Ba6 10. axb5 Bxb5 11. Qc2 0-0 12. Ra2 Bb4 13. Rfa1 Qb6 14. Nxb5 cxb5 15. Ne5 a5 16. Bf3 Rfc8 17. Qe2 a4 18. Rd1 Nxe5 19. Bxe5 Nd5 20. e4 Ne7 21. d5 exd5 22. exd5 Rd8 23. Bd4 Qh6 24. Bc3 Bc5 25. Bd4 Bxd4 26. Rxd4 Nf5 27. Rd1 Re8 28. Qc2 Re5 29. h3 Rae8 30. Raa1 Qg5 31. Bg4 Nh4 32. d6 h5 33. d7 Rd8 34. g3 hxg4 35. hxg4 Nf3+ 36. Kg2 Qxg4 37. Qc3 Nh4+ 38. Kh2 Ng6 39. Kg2 Nf4+ 40. Kg1 Ne2+ 0-1

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "8"]
[White "Kogan, Tatjana"]
[Black "Zadubrovskaya, Maria"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "1794"]
[PlyCount "65"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bf4 Be7 6. e3 Nh5 7. Bg3 Nxg3 8. hxg3 c6 9. Bd3 Nf6 10. Qb3 0-0 11. Qc2 h6 12. 0-0 c5 13. cxd5 Nxd5 14. dxc5 Bxc5 15. Nxd5 Qxd5 16. Be4 Qd6 17. Rfd1 Qe7 18. Rac1 Bb6 19. a3 e5 20. Qc3 f6 21. Bd5+ Kh8 22. Nh4 Qe8 23. Qc2 f5 24. Nf3 Qe7 25. Qc3 Re8 26. b4 Be6 27. Nxe5 Kh7 28. Bxe6 Qxe6 29. Nf3 Rg8 30. Qb2 Bd8 31. Nd4 Bf6 32. Qb3 Qxb3 33. Nxb3 1/2-1/2

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "3"]
[White "Shchevjeva, Nadezhda"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C02"]
[BlackElo "1794"]
[PlyCount "121"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 c4 7. Nbd2 a5 8. b3 cxb3 9. Nxb3 a4 10. Nbd2 Nge7 11. Bd3 Ng6 12. Bxg6 hxg6 13. 0-0 Be7 14. Rb1 Qc7 15. c4 0-0 16. Re1 Rd8 17. c5 Bd7 18. h3 Rdb8 19. Nf1 Na5 20. Ng3 Nb3 21. Qd3 b6 22. cxb6 Rxb6 23. Nd2 Nxc1 24. Rbxc1 Qb7 25. Rb1 Rxb1 26. Rxb1 Qa7 27. Nf3 Rb8 28. Rxb8+ Qxb8 29. h4 Qb3 30. Qxb3 axb3 31. Nd2 b2 32. Nb1 Ba4 33. Ne2 Bxh4 34. Nec3 Bb3 35. g3 Be7 36. Kf1 f6 37. f4 g5 38. Kf2 gxf4 39. gxf4 f5 40. Kg3 Bd8 41. a4 Bb6 42. Kf3 Bxd4 43. Nb5 Bb6 44. Ke2 Bc2 45. N1a3 Bxa4 46. Kd3 Ba5 47. Nc3 Bb4 48. Nab1 Kf7 49. Nxa4 Kg6 50. Nxb2 Kh5 51. Ke3 Kg4 52. Nd3 Ba5 53. Na3 Bb6+ 54. Ke2 g5 55. fxg5 Kxg5 56. Kf3 Bd4 57. Nb5 Bb6 58. Nd6 Kg6 59. Kf4 Bc7 60. Nc5 Kg7 61. Nxe6+ 1-0

[Event "RUS-chB U12 Girls"]
[Site "Dagomys"]
[Date "2009.04.??"]
[Round "9"]
[White "Sorina, Eva"]
[Black "Kogan, Tatjana"]
[Result "1/2-1/2"]
[ECO "C02"]
[BlackElo "1794"]
[PlyCount "80"]
[EventDate "2009.04.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be3 cxd4 7. cxd4 Qxb2 8. Nbd2 Qb6 9. Bd3 Nge7 10. 0-0 Ng6 11. Re1 Qc7 12. Nf1 a6 13. Ng3 Bb4 14. Bd2 Bxd2 15. Qxd2 Bd7 16. Rab1 Rb8 17. Rec1 Qa5 18. Qxa5 Nxa5 19. Bxa6 b6 20. Rc7 Ne7 21. Rc5 0-0 22. Rc7 Rfd8 23. Nh5 Nec6 24. Bb5 Rbc8 25. Rxc8 Rxc8 26. Bxc6 Rxc6 27. h3 Nc4 28. Rc1 Rc8 29. Kh2 Ra8 30. Ra1 b5 31. Ne1 b4 32. Rb1 Rb8 33. Nc2 Rb5 34. Rxb4 Rxb4 35. Nxb4 Na3 36. Nd3 Nc2 37. Nc5 Bc8 38. Nb3 Ba6 39. a4 Bc4 40. a5 Nb4 1/2-1/2

[Event "RUS-ch U10 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Chernova, Margarita"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "C00"]
[BlackElo "2245"]
[PlyCount "30"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. e5 d5 3. exd6 Bxd6 4. d4 Nc6 5. Nf3 Nge7 6. Bc4 0-0 7. 0-0 Nf5 8. Nc3 Nce7 9. Bd3 Nc6 10. d5 Ncd4 11. Nxd4 Nxd4 12. dxe6 fxe6 13. Bxh7+ Kxh7 14. Qxd4 Bxh2+ 15. Kxh2 Qxd4 0-1

[Event "RUS Central Region-ch U14 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Fedorova, Elizaveta"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "C55"]
[BlackElo "2245"]
[PlyCount "128"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 d6 5. d3 Bg4 6. Be3 Be7 7. Qe2 Qd7 8. 0-0-0 0-0-0 9. h3 Bxf3 10. Qxf3 Nb8 11. Bxa7 b6 12. Ba6+ Nxa6 13. d4 Qc6 14. Qf5+ Kb7 15. d5 Qd7 16. Qxd7 Rxd7 17. Bxb6 Kxb6 18. Rhe1 Rb8 19. Kb1 Ka7 20. a4 Rb7 21. Nb5+ Ka8 22. c4 Nc5 23. a5 Nfxe4 24. f3 Nf2 25. Rd2 Nfd3 26. Red1 Nb4 27. g3 Rd8 28. f4 Rc8 29. fxe5 f6 30. exf6 Bxf6 31. Nd4 Bxd4 32. Rxd4 Nbd3 33. R4xd3 Nxd3 34. Rxd3 Rcb8 35. Kc2 Rxb2+ 36. Kc3 R2b3+ 37. Kd4 Rxd3+ 38. Kxd3 Rb3+ 39. Ke4 Rxg3 40. Kf5 Rxh3 41. Ke6 Kb7 42. Kf7 g5 43. Ke7 g4 44. Kf7 g3 45. Ke7 g2 46. Kf7 g1Q 47. Ke6 Qe3+ 48. Kf6 Qe5+ 49. Kf7 Qf5+ 50. Ke7 Re3+ 51. Kd8 Qg6 52. a6+ Kxa6 53. Kxc7 Re7+ 54. Kc6 Re8 55. c5 dxc5+ 56. Kxc5 Rc8+ 57. Kd4 Qf5 58. d6 Qc5+ 59. Kd3 Qc4+ 60. Kd2 Qc3+ 61. Kd1 Qc2+ 62. Ke1 Rd8 63. Kf1 Rxd6 64. Ke1 Rd1# 0-1

[Event "RUS-ch U10 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Grigorieva, Olga"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "D30"]
[BlackElo "2245"]
[PlyCount "47"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. Nf3 e6 2. c4 d5 3. e3 c5 4. cxd5 exd5 5. d4 Nc6 6. Bb5 Bd7 7. 0-0 Qb6 8. Nc3 Nf6 9. h3 a6 10. Ba4 Be7 11. Ne5 Rd8 12. Nxd7 Rxd7 13. dxc5 Bxc5 14. Bb3 d4 15. exd4 Bxd4 16. Re1+ Ne7 17. Qc2 0-0 18. Be3 Rdd8 19. Bxd4 Qxd4 20. Rad1 Qf4 21. Rxe7 Rxd1+ 22. Nxd1 b6 23. Ne3 Kh8 24. Qc7 1-0

[Event "RUS-ch U10 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Khafizova, Leysan"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "C00"]
[BlackElo "2245"]
[PlyCount "23"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. c4 e6 2. e4 c5 3. d3 Nc6 4. Be3 Nf6 5. Nf3 g6 6. Be2 Bg7 7. Bxc5 Qa5+ 8. Qd2 Qxc5 9. b4 Qe7 10. Nc3 0-0 11. 0-0 Ng4 12. e5 0-1

[Event "RUS Central Region-ch U14 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Kogan, Tatjana"]
[Black "Beliavtseva, Sofia"]
[Result "1-0"]
[ECO "C21"]
[WhiteElo "2245"]
[PlyCount "101"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. d4 Bb4+ 3. Nc3 Nf6 4. dxe5 Nxe4 5. Bd2 Nxc3 6. Bxc3 Bxc3+ 7. bxc3 Nc6 8. f4 d6 9. exd6 cxd6 10. Nf3 Bg4 11. Be2 0-0 12. 0-0 Re8 13. Re1 Qb6+ 14. Kh1 Qf2 15. Qd2 Re6 16. h3 Bxf3 17. gxf3 Rg6 18. Rg1 Rxg1+ 19. Rxg1 Re8 20. Re1 h6 21. Qd1 Qg3 22. Rf1 Re6 23. Bc4 Rg6 24. Qd2 Qxh3+ 25. Qh2 Qxh2+ 26. Kxh2 Na5 27. Bd3 Re6 28. Rb1 Re3 29. Kg2 f6 30. Rb5 b6 31. Rd5 Kf7 32. Rxd6 Ke7 33. Rd4 Nc6 34. Re4+ Rxe4 35. fxe4 h5 36. Kg3 Kf7 37. Kh4 Kg6 38. f5+ Kf7 39. Bc4+ Ke7 40. Kxh5 Ne5 41. Be6 a5 42. Kh4 g6 43. c4 gxf5 44. exf5 a4 45. a3 Kd6 46. Kh5 Kc5 47. c3 Nxc4 48. Kg6 Nxa3 49. Kxf6 Nb1 50. Kg7 a3 51. f6 1-0

[Event "RUS-ch U10 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Kogan, Tatjana"]
[Black "Iskhakova, Yuliya"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2245"]
[PlyCount "50"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. Nf3 Bf5 4. Nc3 e6 5. a3 h6 6. e3 Bd6 7. Ne5 Bxe5 8. Bxe5 Nbd7 9. Bg3 Ne4 10. Nxe4 Bxe4 11. Be2 Bxg2 12. Rg1 Be4 13. Bf4 Bg6 14. Rg4 Nf6 15. Rg3 Qe7 16. Qd2 0-0-0 17. 0-0-0 Ne4 18. Qa5 Nxg3 19. fxg3 a6 20. h4 Qd7 21. Qc3 f6 22. a4 Be8 23. Bg4 f5 24. Be2 Qc6 25. Qa5 Bg6 1-0

[Event "RUS-ch U10 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Kogan, Tatjana"]
[Black "Kol, Evgeniya"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2245"]
[PlyCount "48"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 Bf5 4. Nf3 e6 5. Be2 Bd6 6. c3 Bxf4 7. exf4 Qd6 8. Qc1 Bxb1 9. Rxb1 Nbd7 10. 0-0 0-0 11. Qe3 h6 12. Bd3 Rfe8 13. Rfe1 c5 14. Ne5 cxd4 15. cxd4 Rac8 16. Re2 Rc7 17. Rbe1 Rec8 18. f5 Nf8 19. fxe6 Nxe6 20. Qf3 Nxd4 21. Qf4 Nxe2+ 22. Rxe2 Rc1+ 23. Re1 Rxe1+ 24. Bf1 Qxe5 0-1

[Event "RUS-ch U10 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Kogan, Tatjana"]
[Black "Komogorova, Kamilla"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2245"]
[PlyCount "24"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. e3 Bf5 4. Bd3 Bxd3 5. Qxd3 Nc6 6. Nge2 e6 7. Bd2 Bb4 8. Nc1 0-0 9. a3 Bd6 10. Nb3 Re8 11. 0-0-0 Nb4 12. Qe2 Nc6 0-1

[Event "RUS Central Region-ch U14 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Kogan, Tatjana"]
[Black "Litkina, Anna"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2245"]
[PlyCount "22"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nc3 Nf6 5. Bg5 Bb4 6. Bd3 Nc6 7. Nf3 Bg4 8. Qe2+ Be7 9. Qe3 Qd7 10. 0-0-0 0-0-0 11. Rhe1 Bd6 0-1

[Event "RUS-ch U10 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Kogan, Tatjana"]
[Black "Vlasova, Ekaterina"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2245"]
[PlyCount "50"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Bf5 3. g3 Nf6 4. Bg2 e6 5. Bf4 Nbd7 6. Nf3 Be7 7. 0-0 0-0 8. e3 Rc8 9. Rc1 c5 10. Ne2 Nh5 11. h3 Nxf4 12. Nxf4 Be4 13. c3 cxd4 14. cxd4 Rxc1 15. Qxc1 Qc8 16. Qd2 b6 17. Rc1 Qb7 18. Ne2 h6 19. a3 Rc8 20. Rc3 Rxc3 21. Nxc3 Bh7 22. Kh2 a5 23. Ng1 b5 24. Nce2 b4 25. a4 Nf6 0-1

[Event "RUS Central Region-ch U14 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Kogan, Tatjana"]
[Black "Zaitseva, Elena"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "2245"]
[PlyCount "56"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. g3 Nf6 4. d3 d5 5. exd5 Nxd5 6. Nc3 Bb4 7. Bd2 Bg4 8. Nxd5 Qxd5 9. Bxb4 Nxb4 10. Qd2 Nc6 11. Qg5 Bxf3 12. Rg1 0-0 13. Qe3 Rfe8 14. Kd2 e4 15. Re1 Re6 16. Kc1 Rae8 17. Bh3 Re5 18. g4 exd3 19. Qd2 Qxa2 20. Qxd3 Rxe1+ 21. Rxe1 Rxe1+ 22. Kd2 Rd1+ 23. Ke3 Rxd3+ 24. Kxd3 Qd5+ 25. Kc3 Qd4+ 26. Kb3 Qb4+ 27. Ka2 Bd5+ 28. Ka1 Qe1# 0-1

[Event "RUS Central Region-ch U14 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Kogan, Tatjana"]
[Black "Zolina, Yulia"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "2245"]
[PlyCount "80"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d3 g6 5. g3 Bg7 6. Bg2 0-0 7. 0-0 Nc6 8. Nd5 Nxd5 9. exd5 Ne5 10. Nxe5 Bxe5 11. c3 Bg7 12. Bf4 Bf5 13. Be3 Qc7 14. f4 Bd7 15. Qe2 Bb5 16. c4 Bd7 17. Rae1 Rfe8 18. Qd1 Bxb2 19. Qc2 Bg7 20. Re2 a6 21. Ref2 e6 22. Re2 exd5 23. Bxd5 Bc6 24. Bg2 Bxg2 25. Rxg2 Rxe3 26. Qf2 Bd4 27. Qc2 Re2+ 28. Kh1 Rxc2 29. Rxc2 Qc6+ 30. Rg2 Re8 31. Rfg1 Bxg1 32. Kxg1 Re1+ 33. Kf2 Re2+ 34. Kxe2 Qxg2+ 35. Ke3 Qxa2 36. Kf3 Qb3 37. Ke3 a5 38. Kd2 a4 39. Ke3 a3 40. Ke4 a2 0-1

[Event "RUS Central Region-ch U14 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Nasonkina, Margarita"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "C55"]
[BlackElo "2245"]
[PlyCount "43"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Bc5 5. Ng5 0-0 6. d3 h6 7. Nf3 d6 8. 0-0 Bg4 9. Bd2 Nd4 10. Ne1 Bxd1 11. Nxd1 c6 12. Ne3 d5 13. Bb3 Qd6 14. Bc3 Nxb3 15. Nf5 Qe6 16. Ng3 Nd4 17. Rd1 dxe4 18. dxe4 Rad8 19. Nd3 Bb6 20. Rfe1 Nxc2 21. Re2 Nd4 22. Re3 0-1

[Event "RUS Central Region-ch U14 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Ochneva, Inga"]
[Black "Kogan, Tatjana"]
[Result "0-1"]
[ECO "C57"]
[BlackElo "2245"]
[PlyCount "48"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Qe7 5. Nxf7 Rg8 6. Nd6+ Qxd6 7. Bxg8 Nxe4 8. f3 Nf6 9. 0-0 b6 10. Bxh7 Nxh7 11. Nc3 Bb7 12. b3 0-0-0 13. Bb2 Qg6 14. Re1 d6 15. Qe2 Qxc2 16. Rab1 Qg6 17. Nb5 Ba6 18. a4 Ne7 19. Nxa7+ Kb7 20. Qe4+ Kxa7 21. Qxg6 Nxg6 22. Rbc1 d5 23. Rxc7+ Kb8 24. Rec1 b5 0-1

[Event "RUS-ch U10 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Pyltsina, Ekaterina"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C10"]
[BlackElo "2245"]
[PlyCount "37"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 c5 4. dxc5 dxe4 5. Qxd8+ Kxd8 6. Nxe4 f5 7. Nd6 Nc6 8. Nf7+ Ke7 9. Nxh8 Nb4 10. Bd3 e5 11. c3 Nxd3+ 12. Ke2 Nxc5 13. Nf3 e4 14. Nd4 Nd3 15. Bg5+ Ke8 16. b3 Ba3 17. Bd2 Ne7 18. Nb5 Bd7 19. Nxa3 1-0

[Event "RUS Central Region-ch U14 Girls"]
[Site "Russia"]
[Date "2004.??.??"]
[Round "?"]
[White "Sosnitskaja, Alena"]
[Black "Kogan, Tatjana"]
[Result "1-0"]
[ECO "C44"]
[BlackElo "2245"]
[PlyCount "35"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. d3 Nc6 3. Nf3 h6 4. Nc3 Nb4 5. Nxe5 Bc5 6. Nf3 d6 7. d4 Bb6 8. Bd3 Bg4 9. h3 Bxf3 10. Qxf3 Bxd4 11. Bd2 Bxc3 12. Bxc3 Nf6 13. Bxb4 0-0 14. 0-0-0 a5 15. Bd2 Qd7 16. Qg3 b5 17. Bxh6 Qe6 18. Qxg7# 1-0

