[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.15"]
[Round "9"]
[White "Kostin, Sergei Anatolievich"]
[Black "Provotorov, Alexandr P"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2236"]
[BlackElo "2294"]
[PlyCount "58"]
[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. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 dxc4 5. Bg2 Bb4+ 6. Bd2 c5 7. 0-0 0-0 8. Na3 Bxa3 9. bxa3 cxd4 10. Bb4 Re8 11. Qxd4 Nc6 12. Qxc4 e5 13. Rfd1 Be6 14. Qh4 Qb6 15. Bd6 Bf5 16. e3 Rad8 17. Qa4 Be4 18. Qb3 Qxb3 19. axb3 Bc2 20. Rd2 Bxb3 21. Bc7 Rxd2 22. Nxd2 Bd5 23. e4 Be6 24. Rb1 Rc8 25. Rxb7 Ne8 26. Bxe5 Nxe5 27. Rxa7 Rc1+ 28. Bf1 Bh3 29. f4 Ng4 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.14"]
[Round "8"]
[White "Semin, Daniil"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2080"]
[BlackElo "2236"]
[PlyCount "116"]
[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 Nf6 2. Nc3 d6 3. e4 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. a4 0-0 7. a5 c6 8. 0-0 Qc7 9. b3 Rb8 10. Bb2 b5 11. axb6 axb6 12. Be2 b5 13. Qd3 Re8 14. Nd1 Bf8 15. Nd2 Bb7 16. c3 d5 17. f3 Rbd8 18. Qc2 Bd6 19. f4 exd4 20. e5 dxc3 21. Bxc3 Bc5+ 22. Kh1 d4 23. Ba5 Bb6 24. Bxb6 Nxb6 25. Bd3 Nfd5 26. Bxh7+ Kf8 27. Qc5+ Qe7 28. Qxd4 c5 29. Qf2 Nb4 30. Ne3 Nd3 31. Bxd3 Rxd3 32. Nf5 Qe6 33. Nd6 Rxd6 34. exd6 Qxd6 35. Nf3 Rd8 36. Qc2 Kg8 37. Ng5 g6 38. Ne4 Qc6 39. Rae1 c4 40. f5 Rd4 41. Ng3 cxb3 42. Qf2 Rf4 43. Qe2 Nd5 44. fxg6 fxg6 45. Rf3 Rxf3 46. Qxf3 Nc3 47. Qf2 Qxg2+ 48. Qxg2 Bxg2+ 49. Kxg2 b2 50. Ne2 b1Q 51. Rxb1 Nxb1 52. Nd4 Na3 53. Kf3 Kf7 54. Kf4 Kf6 55. h3 b4 56. Nb3 Nc4 57. Ke4 Kg5 58. Nd4 Kh4 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.13"]
[Round "7"]
[White "Kostin, Sergei Anatolievich"]
[Black "Bilan, Danila"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2236"]
[BlackElo "2244"]
[PlyCount "58"]
[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 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. e3 b5 6. a4 Bb4 7. Bd2 a5 8. axb5 Bxc3 9. Bxc3 cxb5 10. b3 Bb7 11. d5 Nf6 12. bxc4 b4 13. Bxf6 Qxf6 14. Qa4+ Nd7 15. Nd4 e5 16. Nb3 Ke7 17. Be2 Rhc8 18. Qb5 Ba6 19. Qxa5 Qd6 20. Qa4 Bxc4 21. Na5 Nc5 22. Qc2 Bxe2 23. Kxe2 Qa6+ 24. Nc4 Qb5 25. d6+ Ke6 26. Rxa8 Rxa8 27. Rc1 b3 28. Qc3 Ra2+ 29. Ke1 Ne4 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.11"]
[Round "6"]
[White "Balashov, Yuri S"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2408"]
[BlackElo "2236"]
[PlyCount "63"]
[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 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. 0-0 exd4 8. Nxd4 Re8 9. f3 Nc6 10. Be3 Nh5 11. Nxc6 bxc6 12. Qd2 f5 13. c5 d5 14. Bg5 Bf6 15. Bxf6 Nxf6 16. exd5 cxd5 17. b4 c6 18. Rfe1 Be6 19. Qd4 Nd7 20. Ba6 Rb8 21. b5 Qe7 22. bxc6 Qxc5 23. Qxc5 Nxc5 24. c7 Ra8 25. Bb5 Rf8 26. Rac1 a6 27. Bc6 Rac8 28. Nxd5 Nd3 29. Rxe6 Nxc1 30. Bd7 Kf7 31. Re7+ Kg8 32. Bxc8 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.10"]
[Round "5"]
[White "Kostin, Sergei Anatolievich"]
[Black "Moiseev, Alexandr A"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2236"]
[BlackElo "2221"]
[PlyCount "101"]
[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. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. d4 0-0 6. 0-0 c6 7. Qc2 b6 8. Rd1 Bb7 9. b3 c5 10. Bb2 Nc6 11. e3 Rc8 12. dxc5 bxc5 13. a3 Qb6 14. cxd5 exd5 15. Nbd2 Rfd8 16. Rac1 Na5 17. Bh3 Ra8 18. Be5 Nc6 19. Bxf6 Bxf6 20. Qxc5 Bb2 21. Qxb6 axb6 22. Rc2 Bxa3 23. Nd4 Nxd4 24. exd4 Bd6 25. Nf1 g6 26. Ne3 Ra5 27. Bg2 Rda8 28. f4 f5 29. Kf2 Kf7 30. Rb1 Ke6 31. Rbb2 Ba3 32. Rb1 Bd6 33. Re2 Ra2 34. Rbe1 Kd7 35. Nxd5 Bxd5 36. Bxd5 R8a5 37. Be6+ Kc6 38. Rc1+ Kb5 39. Rcc2 Rxc2 40. Rxc2 Ra7 41. Kf3 Re7 42. Bd5 h6 43. h4 g5 44. hxg5 hxg5 45. fxg5 Rg7 46. Rc6 Bf8 47. Rf6 Be7 48. Bc4+ Kb4 49. Rxb6+ Kc3 50. g6 Kxd4 51. Bf7 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.09"]
[Round "4"]
[White "Evlakhin, Igor"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "E73"]
[WhiteElo "1993"]
[BlackElo "2236"]
[PlyCount "86"]
[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 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. Be2 0-0 6. Bg5 Na6 7. Qd2 e5 8. dxe5 dxe5 9. Qxd8 Rxd8 10. Nd5 Rd6 11. Nxf6+ Bxf6 12. Bxf6 Rxf6 13. Nf3 Bg4 14. Nd2 Bxe2 15. Kxe2 Rd8 16. Nb3 Nb4 17. Rhd1 Rxd1 18. Rxd1 Nxa2 19. c5 Nb4 20. Na5 b6 21. cxb6 axb6 22. Nc4 Nc6 23. Rd7 b5 24. Ne3 Nd4+ 25. Ke1 Rc6 26. Ng4 Rc1+ 27. Kd2 Rc2+ 28. Kd3 Rxb2 29. Nxe5 Ne6 30. Rxf7 c5 31. Re7 c4+ 32. Ke3 Rb3+ 33. Kd2 Nc5 34. Ng4 b4 35. Nf6+ Kf8 36. Rc7 c3+ 37. Kc1 Ne6 38. Nxh7+ Ke8 39. Nf6+ Kd8 40. Rc4 Rb2 41. h4 Nf4 42. Rd4+ Kc8 43. Rc4+ Kb7 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.08"]
[Round "3"]
[White "Kostin, Sergei Anatolievich"]
[Black "Kachulin, Sergey"]
[Result "1/2-1/2"]
[ECO "E00"]
[WhiteElo "2236"]
[BlackElo "1999"]
[PlyCount "64"]
[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 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 Qe7 5. Bg2 Nc6 6. a3 Bxd2+ 7. Qxd2 a5 8. Nf3 d6 9. Nc3 0-0 10. 0-0 Bd7 11. e4 e5 12. d5 Nb8 13. Ne1 Na6 14. Nd3 Nc5 15. Nxc5 dxc5 16. f4 Ne8 17. f5 f6 18. h4 Nd6 19. Qd3 a4 20. Rf2 Kf7 21. Bf1 Ke8 22. Qe3 b6 23. Rb1 Qf7 24. Bd3 Ke7 25. g4 h6 26. Rbf1 Rh8 27. Rf3 Rag8 28. Kf2 g5 29. h5 Ra8 30. Kg2 Ra5 31. R3f2 Rha8 32. Rb1 Qe8 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.07"]
[Round "2"]
[White "Petrov, Vladimir S"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "E88"]
[WhiteElo "1986"]
[BlackElo "2236"]
[PlyCount "85"]
[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 c6 8. Qd2 cxd5 9. cxd5 Nbd7 10. Nh3 a6 11. Be2 b5 12. 0-0 Nb6 13. Nf2 Bd7 14. Rfc1 Ne8 15. b3 f5 16. Nd3 a5 17. Nb2 b4 18. Ncd1 Nf6 19. Bd3 f4 20. Bf2 g5 21. Nc4 Nxc4 22. bxc4 g4 23. c5 g3 24. hxg3 Nh5 25. gxf4 exf4 26. Bc4 Qf6 27. c6 Bc8 28. Rab1 Ng3 29. Nb2 Qh4 30. Bd4 Qh1+ 31. Kf2 Qh4 32. Kg1 Bf6 33. Bxf6 Rxf6 34. Nd3 Ra7 35. e5 Qh1+ 36. Kf2 Qh4 37. Kg1 Rg6 38. Ne1 Rag7 39. Rb2 Qh1+ 40. Kf2 Ne4+ 41. Ke2 Rxg2+ 42. Kd1 Nxd2 43. Rxd2 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2016.08.06"]
[Round "1"]
[White "Kostin, Sergei Anatolievich"]
[Black "Skripchenko, Artem"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2236"]
[BlackElo "1809"]
[PlyCount "83"]
[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 Nc6 7. Nge2 a6 8. Qd2 Rb8 9. d5 Ne5 10. Nd4 c5 11. Nc2 Qc7 12. a4 b6 13. Be2 Re8 14. 0-0 Ned7 15. Rad1 Nf8 16. f4 N6d7 17. Kh1 f5 18. exf5 gxf5 19. Ne3 h6 20. Bh4 Nf6 21. Bd3 Ng6 22. Bxf6 Bxf6 23. Bxf5 Bxf5 24. Nxf5 Qd7 25. g4 Kh7 26. Ne4 Qxa4 27. Nxf6+ exf6 28. Nxd6 Red8 29. Ra1 Qb3 30. Ne4 Qxc4 31. Nxf6+ Kg7 32. g5 hxg5 33. fxg5 Rh8 34. Qf2 Rbd8 35. Rad1 Ne5 36. Nh5+ Rxh5 37. Qf6+ Kh7 38. Qe7+ Kg6 39. Rf6+ Kxg5 40. Qxe5+ Kg4 41. Rg1+ Kh4 42. Qg3# 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.09"]
[Round "8"]
[White "Alkaev, Roman"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2177"]
[BlackElo "2321"]
[PlyCount "95"]
[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. b3 c5 2. Bb2 Nc6 3. e3 Nf6 4. Nf3 e6 5. Bb5 Qc7 6. 0-0 Be7 7. d3 0-0 8. Bxc6 Qxc6 9. e4 b6 10. Ne5 Qc7 11. Ng4 Nxg4 12. Qxg4 f6 13. c4 Rf7 14. Nc3 Bb7 15. Rfe1 a6 16. Rad1 Bd6 17. Qh3 Be5 18. Rd2 Raf8 19. Nd1 f5 20. f3 f4 21. Qh4 Qd6 22. Bxe5 Qxe5 23. d4 cxd4 24. Qf2 Bc6 25. Qxd4 Qxd4+ 26. Rxd4 b5 27. Nb2 Rb8 28. cxb5 axb5 29. Nd3 Ra8 30. Re2 Rff8 31. Rc2 Ra7 32. Nb4 Rfa8 33. h4 h6 34. Kh2 Kf7 35. Kh3 Kf6 36. Rd6 Ke5 37. Rdd2 g5 38. Kg4 Kf6 39. hxg5+ hxg5 40. Rc5 Rg8 41. e5+ Kg6 42. Nxc6 dxc6 43. Rxc6 Re7 44. Rdd6 Kf7 45. Rb6 Ra8 46. Kxg5 Rxa2 47. Kxf4 Rxg2 48. Rxb5 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.08"]
[Round "7"]
[White "Kostin, Sergei Anatolievich"]
[Black "Petrov, Aleksandr1111"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2321"]
[BlackElo "2126"]
[PlyCount "57"]
[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 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 0-0 5. Bg5 d6 6. e3 h6 7. Bh4 g5 8. Bg3 Nh5 9. Qc2 e6 10. Be2 Nd7 11. Nd2 Nxg3 12. hxg3 b6 13. Bf3 Rb8 14. g4 a6 15. Nb3 c5 16. Rd1 Qc7 17. Ne4 f5 18. gxf5 exf5 19. Ng3 Nf6 20. Nxf5 g4 21. Be2 Bxf5 22. Qxf5 Rbe8 23. Bxg4 Nxg4 24. Qxg4 Qf7 25. Qe2 h5 26. Rxh5 a5 27. a4 Qd7 28. dxc5 Qxa4 29. Qd3 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.07"]
[Round "6"]
[White "Panko, Alexander"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2018"]
[BlackElo "2321"]
[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. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Qa5+ 5. c3 Nf6 6. d5 Qb6 7. b3 e6 8. e4 exd5 9. exd5 Bd6 10. Bxd6 Qxd6 11. Bc4 0-0 12. Ne2 b6 13. Nd2 Re8 14. 0-0 Bb7 15. Ne4 Qe5 16. Nxf6+ Qxf6 17. Re1 d6 18. Ng3 Rxe1+ 19. Qxe1 Nd7 20. Ne4 Qg6 21. Qg3 Qxg3 22. hxg3 Nf6 23. Nxf6+ gxf6 24. Rd1 a6 25. a4 f5 26. f4 Kg7 27. Be2 Rb8 28. c4 Bc8 29. Kf2 Bd7 30. Bd3 h6 31. Re1 Kf6 32. Rh1 Rh8 33. Ra1 Rb8 34. Rh1 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.06"]
[Round "5"]
[White "Kostin, Sergei Anatolievich"]
[Black "Semin, Daniil"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2321"]
[BlackElo "1967"]
[PlyCount "60"]
[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 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Qd2 Qa5 9. Rc1 0-0 10. Nf3 Rd8 11. d5 Nd7 12. Be2 b6 13. 0-0 Ba6 14. c4 Qxd2 15. Nxd2 e5 16. g3 f5 17. f3 f4 18. Bf2 h5 19. Rc2 Bh6 20. Rb1 Rf8 21. Rb3 fxg3 22. hxg3 h4 23. g4 Bg5 24. Kg2 Kg7 25. Rb1 Rh8 26. Rh1 Nf6 27. Nf1 Ne8 28. Rc3 Nd6 29. Ne3 Raf8 30. Rh3 Rf7 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.05"]
[Round "4"]
[White "Gureev, Dmitry"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2084"]
[BlackElo "2321"]
[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. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nc3 e5 7. d3 Nbd7 8. Rb1 h6 9. b4 Nh5 10. Nd2 f5 11. Bb2 Nhf6 12. Qc2 Kh8 13. c5 dxc5 14. bxc5 c6 15. Ba3 Qc7 16. Nc4 Ne8 17. e3 Ndf6 18. d4 e4 19. d5 g5 20. Nd6 Nxd5 21. Nxd5 cxd5 22. Nxc8 Rxc8 23. Qb3 Rf7 24. Qxd5 Rd8 25. Qc4 Qd7 26. Rbd1 Qxd1 27. Qxf7 Qd7 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.04"]
[Round "3"]
[White "Kostin, Sergei Anatolievich"]
[Black "Sidorov, Klim"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2321"]
[BlackElo "2021"]
[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 d5 2. c4 e6 3. Nf3 c6 4. Nc3 f5 5. Bf4 Nf6 6. e3 Be7 7. Bd3 0-0 8. 0-0 Ne4 9. Bc2 Nd7 10. Nxe4 fxe4 11. Nd2 Bg5 12. Bg3 b5 13. cxb5 cxb5 14. Qe2 Qb6 15. f3 e5 16. Bb3 exd4 17. Bxd5+ Kh8 18. Bxa8 Bxe3+ 19. Kh1 Bxd2 20. fxe4 Be3 21. e5 Re8 22. Be4 Qe6 23. Bf5 Qc6 24. Bxh7 Nxe5 25. Be4 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.03"]
[Round "2"]
[White "Yurchenkov, Yury"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "1924"]
[BlackElo "2321"]
[PlyCount "69"]
[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 c5 2. d4 cxd4 3. Nf3 d6 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 Be6 9. h3 Nbd7 10. 0-0 b5 11. a4 b4 12. Nd5 Bxd5 13. exd5 0-0 14. a5 Qc7 15. Rc1 Qb7 16. Bg4 Nxg4 17. hxg4 Rfc8 18. g5 f6 19. Qd3 fxg5 20. Qf5 Nf6 21. Qe6+ Kf8 22. Bxg5 Qxd5 23. Qh3 Kg8 24. f4 Rc7 25. fxe5 dxe5 26. Rfd1 Qf7 27. Re1 Bc5+ 28. Nxc5 Rxc5 29. Bd2 Rb8 30. c3 b3 31. c4 Rxc4 32. Rxe5 Qa7+ 33. Qe3 Rxc1+ 34. Bxc1 Qd7 35. Qd2 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2014.08.02"]
[Round "1"]
[White "Kostin, Sergei Anatolievich"]
[Black "Antipov, Vladimir"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2321"]
[BlackElo "1930"]
[PlyCount "50"]
[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 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Be3 Qa5 8. Qd2 Bg7 9. Rc1 Nd7 10. Bd3 b6 11. Nf3 Ba6 12. Bxa6 Qxa6 13. Qe2 Qa4 14. 0-0 0-0 15. Bg5 Rae8 16. Qd2 Qc6 17. d5 Qd6 18. Rfe1 e5 19. Qd3 f5 20. Nd2 h6 21. Nc4 Qb8 22. Bd2 Nf6 23. a4 f4 24. Rb1 Kh7 25. Nb2 Qc7 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.11"]
[Round "9"]
[White "Danin, Alexandre"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2598"]
[BlackElo "2320"]
[PlyCount "64"]
[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 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 0-0 7. a4 c6 8. Ba2 a5 9. Qe2 exd4 10. Nxd4 Nc5 11. f3 Qb6 12. Qf2 Kh8 13. Rb1 Qc7 14. Be3 b6 15. Rbd1 Rb8 16. Kh1 Be6 17. Nxe6 fxe6 18. Qg3 Nh5 19. Qg4 Nf6 20. Qh3 d5 21. Bb1 Rbc8 22. b3 Bd6 23. Ne2 e5 24. exd5 cxd5 25. Nc3 Qc6 26. Nb5 Bb8 27. Bg5 Qd7 28. Qxd7 Ncxd7 29. c3 g6 30. Bh6 Rf7 31. Rfe1 e4 32. Bg5 Kg7 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.10"]
[Round "8"]
[White "Kostin, Sergei Anatolievich"]
[Black "Kiselev, Gennady Aleksandrov"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2320"]
[BlackElo "2454"]
[PlyCount "82"]
[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 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 c5 6. 0-0 a6 7. Bb3 Nc6 8. Qe2 cxd4 9. Rd1 d3 10. Rxd3 Qc7 11. Nc3 Be7 12. e4 Nd7 13. Rd1 0-0 14. g3 Nc5 15. Bf4 Qa5 16. Bc2 b5 17. a3 b4 18. axb4 Qxb4 19. e5 Bb7 20. Ne4 Rad8 21. Nd6 Ba8 22. Ng5 h6 23. Nge4 Nxe4 24. Ra4 Qxb2 25. Qxe4 g6 26. Rb1 Qc3 27. Rc4 Qa5 28. Rxc6 Bxd6 29. exd6 e5 30. Bxh6 Rxd6 31. Bxf8 Bxc6 32. Bxd6 Bxe4 33. Bxe4 Qc3 34. Be7 Kg7 35. Bg2 Qc7 36. Rb7 Qc1+ 37. Bf1 Qc6 38. Ra7 Qe6 39. Bc5 Qd5 40. Bb6 e4 41. Rxa6 f5 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.09"]
[Round "7"]
[White "Kostin, Sergei Anatolievich"]
[Black "Voitsekhovsky, Stanislav"]
[Result "0-1"]
[ECO "A99"]
[WhiteElo "2320"]
[BlackElo "2514"]
[PlyCount "52"]
[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. g3 Nf6 4. Bg2 Be7 5. Nf3 0-0 6. 0-0 d6 7. Nc3 a5 8. b3 Qe8 9. Re1 Ne4 10. Nxe4 fxe4 11. Nd2 d5 12. f3 Bb4 13. fxe4 dxc4 14. Nxc4 Bxe1 15. Qxe1 Nc6 16. Bb2 e5 17. d5 Nd4 18. Qd2 Qh5 19. Re1 c5 20. e3 Nf3+ 21. Bxf3 Qxf3 22. Nxe5 Qxe4 23. d6 Bh3 24. Qe2 Rf5 25. Nd3 g5 26. Ba1 Raf8 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.08"]
[Round "6"]
[White "Moiseev, Alexander"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "B86"]
[WhiteElo "1919"]
[BlackElo "2320"]
[PlyCount "98"]
[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 c5 2. Ne2 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 Nbd7 8. f4 Nc5 9. f5 e5 10. Nf3 Nxb3 11. axb3 h6 12. 0-0 Be7 13. Qe2 Bd7 14. Rd1 0-0 15. Nd2 b5 16. b4 d5 17. Nf3 d4 18. Nb1 Qc7 19. c3 dxc3 20. bxc3 Bc6 21. Nbd2 Rfe8 22. Bb2 Bf8 23. Ra5 Qb7 24. Re1 Bd6 25. h3 Bc7 26. Raa1 Rad8 27. g4 Rd7 28. Nh2 Rxd2 29. Qxd2 Nxe4 30. Qc2 Bb6+ 31. Kg2 Nf2+ 32. Kf1 Be4 33. Rxe4 Nxe4 34. Nf3 Ng5 35. Ne1 Nxh3 36. Qg2 Qxg2+ 37. Kxg2 Nf4+ 38. Kf3 Nd5 39. Rxa6 e4+ 40. Ke2 Nf4+ 41. Kd1 Bf2 42. Bc1 e3 43. Nf3 e2+ 44. Kc2 Ng2 45. Bd2 e1Q 46. Nxe1 Nxe1+ 47. Bxe1 Bxe1 48. Rb6 Rc8 49. Rxb5 Bxc3 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.07"]
[Round "5"]
[White "Sedykh, Egor"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "A24"]
[WhiteElo "1845"]
[BlackElo "2320"]
[PlyCount "86"]
[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. g3 Bg7 4. Bg2 0-0 5. d3 d6 6. Nf3 e5 7. 0-0 Nbd7 8. Rb1 h6 9. b4 Nh5 10. Qc2 f5 11. Nd5 g5 12. b5 Nhf6 13. Nxf6+ Qxf6 14. Ba3 Nc5 15. Nd2 Rb8 16. f3 Ne6 17. Nb3 b6 18. e4 a5 19. Bb2 Qg6 20. Qe2 a4 21. Nd2 Nc5 22. Ba3 Ne6 23. Bb2 a3 24. Bc3 h5 25. Nb3 Bd7 26. Bb4 Ra8 27. Bd2 Ra4 28. Be3 f4 29. Bf2 g4 30. Be1 Raa8 31. Bd2 Kh7 32. fxg4 hxg4 33. Kh1 f3 34. Bxf3 gxf3 35. Rxf3 Bh6 36. Bxh6 Qxh6 37. h4 Rxf3 38. Qxf3 Rf8 39. Qe2 Be8 40. Kh2 Bh5 41. Qg2 Qe3 42. g4 Rf2 43. gxh5 Rxg2+ 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.06"]
[Round "4"]
[White "Kostin, Sergei Anatolievich"]
[Black "Gureev, Dmitry"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2320"]
[BlackElo "2093"]
[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. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 c5 7. d5 e6 8. Qd2 exd5 9. cxd5 Qa5 10. a4 Na6 11. Nge2 Nb4 12. Nc1 Bd7 13. Be2 a6 14. Nb3 Qc7 15. 0-0 b5 16. axb5 axb5 17. Be3 Rfe8 18. Bxb5 Rxa1 19. Rxa1 Qb6 20. Bc4 h5 21. Na2 Nxa2 22. Rxa2 Bb5 23. Qa5 Rb8 24. Qxb6 Rxb6 25. Nd2 Be8 26. b3 Nd7 27. f4 Kf8 28. Ra7 Nf6 29. h3 Nd7 30. e5 f5 31. Nf3 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.05"]
[Round "3"]
[White "Kryukov, Valery B"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "1900"]
[BlackElo "2320"]
[PlyCount "90"]
[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Nf3 Nbd7 7. Bd3 e5 8. d5 a5 9. 0-0 Nc5 10. Bc2 Nh5 11. Be3 Nf4 12. Ne2 Qe7 13. Rb1 g5 14. Nh2 Bd7 15. f3 b6 16. Nxf4 exf4 17. Bd4 Be5 18. Ng4 Bxg4 19. hxg4 Nd7 20. Kf2 Qf6 21. Bxe5 Nxe5 22. b3 a4 23. Rh1 Kg7 24. Qe2 axb3 25. Bxb3 Rh8 26. Qc2 Ra5 27. Ke2 Rc5 28. a4 Ra5 29. Qc3 Nxg4 30. Qxf6+ Nxf6 31. Bc2 Nd7 32. Rb5 Ra7 33. g3 fxg3 34. Rg1 Nc5 35. Rb4 h5 36. Rxg3 Kf6 37. Ke3 h4 38. Rg1 h3 39. Rh1 Ke5 40. Bd1 Raa8 41. Rb2 Nxa4 42. Rbh2 Nc5 43. Rxh3 Ra3+ 44. Kf2 Rxh3 45. Rxh3 Nxe4+ 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2013.08.04"]
[Round "2"]
[White "Kostin, Sergei Anatolievich"]
[Black "Fedotov, Nikita"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "2320"]
[BlackElo "1962"]
[PlyCount "85"]
[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 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 c5 8. Qd2 Nc6 9. d5 Qa5 10. Rc1 Ne5 11. Be2 0-0 12. c4 Qxd2+ 13. Kxd2 b6 14. h3 Bb7 15. f4 Nd7 16. Bf3 e6 17. Ne2 Rad8 18. Nc3 Ba6 19. Be2 Rfe8 20. Bd3 exd5 21. exd5 Nf6 22. a4 Re7 23. g4 Ne8 24. Nb5 Bxb5 25. axb5 Nd6 26. f5 gxf5 27. gxf5 Rxe3 28. Kxe3 Bh6+ 29. Kf3 Bxc1 30. Rxc1 Kg7 31. Ra1 Rd7 32. Rg1+ Kf6 33. Kf4 Rd8 34. Rg4 Re8 35. Rh4 Kg7 36. f6+ Kxf6 37. Rh6+ Ke7 38. Rxh7 a5 39. bxa6 Ra8 40. Ke5 Rxa6 41. h4 Ra3 42. Bf1 Rf3 43. Bg2 0-1

[Event "CFO-chT"]
[Site "Kaluga"]
[Date "2012.11.04"]
[Round "5.3"]
[White "Potapov, Alexey"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "A24"]
[WhiteElo "2387"]
[BlackElo "2324"]
[PlyCount "39"]
[EventDate "2012.10.31"]
[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. g3 Bg7 4. Bg2 0-0 5. d3 d6 6. Rb1 e5 7. Bg5 h6 8. Bxf6 Qxf6 9. e3 c6 10. Nge2 Bg4 11. b4 Qe6 12. h3 Bxe2 13. Nxe2 Nd7 14. b5 d5 15. cxd5 cxd5 16. 0-0 Rfd8 17. Rc1 Qd6 18. Qb3 Nc5 19. Qa3 Ne6 20. Qxd6 1/2-1/2

[Event "CFO-chT"]
[Site "Kaluga"]
[Date "2012.11.03"]
[Round "4.1"]
[White "Kostin, Sergei Anatolievich"]
[Black "Vitiuk, Vladislav"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2324"]
[BlackElo "2000"]
[PlyCount "109"]
[EventDate "2012.10.31"]
[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 d5 2. c4 c6 3. Nf3 Nf6 4. e3 g6 5. Nc3 Bg7 6. Be2 0-0 7. 0-0 Bg4 8. Qb3 dxc4 9. Qxc4 Nbd7 10. Rd1 Nb6 11. Qb3 Qc7 12. a4 Nbd5 13. h3 Bxf3 14. Bxf3 Nxc3 15. bxc3 e5 16. Ba3 Rfd8 17. a5 exd4 18. cxd4 Bf8 19. a6 bxa6 20. Bxf8 Kxf8 21. Rxa6 Nd5 22. Rc1 Ne7 23. Qa3 Qd6 24. Qxd6 Rxd6 25. Rca1 Rd7 26. Rxc6 Nxc6 27. Bxc6 Rad8 28. Bxd7 Rxd7 29. Kf1 Ke7 30. Ke2 Kd6 31. Kd3 Rb7 32. Ra6+ Ke7 33. Ke4 Rc7 34. g4 h6 35. f4 Kf8 36. d5 Rd7 37. Ke5 Re7+ 38. Kd4 Rb7 39. h4 Rb4+ 40. Ke5 Rb7 41. e4 Re7+ 42. Kd4 Rb7 43. Kc5 Re7 44. e5 g5 45. d6 Re6 46. hxg5 hxg5 47. Rxa7 Re8 48. d7 Rd8 49. f5 Ke7 50. Kc6 f6 51. e6 Rb8 52. Kc7 Rh8 53. Rb7 Rd8 54. Rb8 Rc8+ 55. Kxc8 1-0

[Event "CFO-chT"]
[Site "Kaluga"]
[Date "2012.11.02"]
[Round "3.3"]
[White "Kostin, Sergei Anatolievich"]
[Black "Logvinov, Kirill"]
[Result "1-0"]
[ECO "B28"]
[WhiteElo "2324"]
[BlackElo "2016"]
[PlyCount "109"]
[EventDate "2012.10.31"]
[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 b5 2. e4 a6 3. Nd2 Bb7 4. Ngf3 Nf6 5. Bd3 e6 6. 0-0 c5 7. c3 cxd4 8. cxd4 Nc6 9. Re1 Be7 10. a3 0-0 11. Nb3 d6 12. Bg5 h6 13. Bh4 Qb6 14. Qe2 g5 15. e5 dxe5 16. dxe5 gxh4 17. exf6 Bxf6 18. Rac1 Nd4 19. Nfxd4 Bxd4 20. Qg4+ Bg7 21. Nc5 Rad8 22. Qxh4 Bd5 23. b4 Qd6 24. Re3 e5 25. Qg4 Qe7 26. Qf5 Rfe8 27. Qh7+ Kf8 28. Rce1 Qf6 29. Bf5 Re7 30. Be4 Bxe4 31. Qxe4 Kg8 32. Rd3 Rxd3 33. Qxd3 Re8 34. Rd1 Qe7 35. f3 a5 36. Qxb5 axb4 37. axb4 Ra8 38. Qb7 Qe8 39. Qd7 Qb8 40. b5 Qf8 41. Ne4 f5 42. Ng3 Qc5+ 43. Kh1 f4 44. Ne4 Qc2 45. h3 Ra2 46. Rg1 Rb2 47. Nd6 Kh7 48. Nf5 Kg6 49. Nxg7 Rb1 50. Ne6 Rxg1+ 51. Kxg1 Qc1+ 52. Kh2 Kf6 53. Qd6 Qe1 54. Nc5+ Kg7 55. Ne4 1-0

[Event "CFO-chT"]
[Site "Kaluga"]
[Date "2012.11.01"]
[Round "2.2"]
[White "Nadeev, Sergey Vladimirovic"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "B81"]
[WhiteElo "2298"]
[BlackElo "2324"]
[PlyCount "60"]
[EventDate "2012.10.31"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 Nc6 8. Bg2 Qb6 9. Nde2 Be7 10. 0-0 Ne5 11. b3 h6 12. Ng3 Ng6 13. Nce2 Bd7 14. c4 Bc6 15. Be3 Qc7 16. Qd2 Rd8 17. Nd4 Nh4 18. Bh1 g5 19. Qc3 Ng6 20. Rad1 Rg8 21. Nde2 e5 22. f3 Nf4 23. Bg2 Bd7 24. Qd2 h5 25. Nc3 Kf8 26. Nf5 Bxf5 27. exf5 d5 28. Nxd5 N4xd5 29. cxd5 Nxd5 30. Rc1 Qb8 0-1

[Event "CFO-chT"]
[Site "Kaluga"]
[Date "2012.10.31"]
[Round "1.2"]
[White "Kostin, Sergei Anatolievich"]
[Black "Seryogin, Peter V"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "2324"]
[BlackElo "2257"]
[PlyCount "154"]
[EventDate "2012.10.31"]
[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. Nf3 Nf6 4. Bf4 Bb4+ 5. Nbd2 0-0 6. a3 Bxd2+ 7. Qxd2 d6 8. e3 Qe7 9. h3 Nbd7 10. Bh2 b6 11. Be2 Bb7 12. 0-0 Ne4 13. Qc2 Rf6 14. Ne1 Rg6 15. Bf3 Rh6 16. Rd1 Ndf6 17. Qe2 Rf8 18. Rc1 Ba6 19. b4 g5 20. Bxe4 fxe4 21. f3 exf3 22. Qxf3 Nd7 23. Qg4 Rxf1+ 24. Kxf1 Rg6 25. Kg1 Nf6 26. Qe2 g4 27. hxg4 Nxg4 28. Nf3 Bb7 29. e4 Qg7 30. d5 Qh6 31. Rc3 Qh5 32. Rc2 e5 33. Bg3 Bc8 34. Bh4 Nh6 35. Qf2 Bg4 36. Nh2 Bh3 37. Qe1 Nf7 38. Kh1 Bd7 39. g3 c6 40. Qe2 Qh6 41. Qf3 Ng5 42. Bxg5 Qxg5 43. Rf2 Qe7 44. Nf1 Bg4 45. Qg2 cxd5 46. cxd5 Qg5 47. Kg1 h5 48. Rc2 Rf6 49. Rc3 Kh7 50. Rc7+ Kg6 51. Rc3 Kh7 52. Nd2 Rf7 53. Nf1 Qf6 54. Nd2 Qg5 55. Nf1 Qf6 56. Ne3 Bf3 57. Qc2 Qg6 58. Nf5 Bxe4 59. Qxe4 Rxf5 60. Rc7+ Kg8 61. Rc8+ Kg7 62. Qe3 Rf7 63. Kh2 Qg4 64. Rc3 h4 65. gxh4 Qxh4+ 66. Kg2 Kh7 67. Qh3 Qxh3+ 68. Kxh3 Kg6 69. Kg4 Rf4+ 70. Kg3 Rd4 71. Rc7 Rxd5 72. Rxa7 b5 73. a4 bxa4 74. Rxa4 Rd4 75. Ra6 Kf5 76. b5 d5 77. b6 Rb4 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.08"]
[Round "9"]
[White "Kostin, Sergei Anatolievich"]
[Black "Aleksandrov, Aleksej"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2309"]
[BlackElo "2602"]
[PlyCount "61"]
[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 d5 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. a3 Bxc3+ 6. bxc3 Nc6 7. cxd5 exd5 8. Bd3 Nge7 9. Ne2 c4 10. Bc2 Bf5 11. f3 Bxc2 12. Qxc2 f5 13. a4 Qd7 14. Ba3 0-0-0 15. Kf2 Rhe8 16. a5 Nb8 17. Ng3 g6 18. Rhe1 h5 19. h4 Nec6 20. Bc1 Qc7 21. Qa4 Re6 22. Rh1 Ne7 23. Ne2 Ra6 24. Nf4 Rd7 25. Qb5 Qc6 26. Rb1 Qf6 27. Ba3 Nbc6 28. Bb4 Qf7 29. Rb2 Ng8 30. Rh3 Nf6 31. Rg3 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.07"]
[Round "8"]
[White "Tarasov, Igor"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "C09"]
[WhiteElo "2319"]
[BlackElo "2309"]
[PlyCount "98"]
[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 c5 2. c3 e6 3. d4 d5 4. exd5 exd5 5. Nf3 Bd6 6. Bb5+ Nc6 7. 0-0 Nge7 8. dxc5 Bxc5 9. Nbd2 0-0 10. Nb3 Bb6 11. Re1 Nf5 12. Bd3 Bc7 13. Bc2 Qd6 14. g3 Bb6 15. Bf4 Qd8 16. Qd3 g6 17. Rad1 Be6 18. Qd2 Re8 19. Ne5 Qf6 20. Ng4 Qg7 21. Bg5 Bd8 22. Nc5 h5 23. Nh6+ Nxh6 24. Bxh6 Qf6 25. Qf4 g5 26. Qxf6 Bxf6 27. Nxe6 fxe6 28. f4 gxf4 29. Bg6 Re7 30. Bxf4 h4 31. Kg2 Kg7 32. Bh5 e5 33. Be3 Rd8 34. Bc5 Re6 35. Bg4 Ree8 36. Bf5 e4 37. gxh4 Bxh4 38. Rg1 e3 39. Kh3+ Kf6 40. Kxh4 Kxf5 41. Rg5+ Ke4 42. Kg3 e2 43. Rg4+ Kf5 44. Re1 Re6 45. Rf4+ Kg6 46. Bd4 Rde8 47. Kf3 Kh6 48. Bf6 Ne5+ 49. Bxe5 Rxe5 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.05"]
[Round "7"]
[White "Kostin, Sergei Anatolievich"]
[Black "Gromadin, Gleb"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2309"]
[BlackElo "2145"]
[PlyCount "77"]
[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 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Bc5 9. Nb3 Nc6 10. Bf4 Nh5 11. Nxc5 bxc5 12. Be3 Nd4 13. Qd1 0-0 14. Bxd4 cxd4 15. Qxd4 Qg5 16. Qd2 Qg6 17. f3 d5 18. exd5 exd5 19. 0-0-0 dxc4 20. Bxc4 Rac8 21. Ba2 Qf6 22. Kb1 Nf4 23. g3 Ng6 24. Rhf1 Ba6 25. Rf2 Rfd8 26. Nd5 Qf5+ 27. Ka1 Kh8 28. g4 Qe5 29. f4 Qd6 30. Qe3 Qe6 31. Qf3 Qc6 32. Nc3 Rxd1+ 33. Qxd1 Qc7 34. Qd2 Rd8 35. Qe3 Qd7 36. f5 Re8 37. fxg6 Rxe3 38. gxf7 Re1+ 39. Bb1 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.05"]
[Round "6"]
[White "Tsapulin, Anatoly"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2173"]
[BlackElo "2309"]
[PlyCount "90"]
[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. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. c4 d6 6. Nc3 c6 7. e4 Qa5 8. Qc2 Qh5 9. Nh4 g5 10. Nf5 Bxf5 11. exf5 Nbd7 12. d4 c5 13. Qe2 g4 14. dxc5 Ne5 15. f4 gxf3 16. Bxf3 Nxf3+ 17. Rxf3 dxc5 18. Kg2 Qg4 19. h3 Qd4 20. Bg5 Qd6 21. Rd1 Qb6 22. Qxe7 Rfe8 23. Qd6 Qxb2+ 24. Rd2 Qc1 25. Qd3 Qe1 26. Re3 Rxe3 27. Qxe3 Qxe3 28. Bxe3 b6 29. Kf3 Re8 30. Bg5 h6 31. Bh4 Nh7 32. Nb5 a6 33. Nc7 Re1 34. Rd8+ Bf8 35. f6 Nxf6 36. Kf2 Re5 37. Bxf6 Rf5+ 38. Ke3 Rxf6 39. Ke4 Rf2 40. Nxa6 Rxa2 41. Nb8 Kg7 42. Rd3 Rb2 43. Kd5 b5 44. cxb5 Rxb5 45. Nd7 Be7 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.03"]
[Round "5"]
[White "Kostin, Sergei Anatolievich"]
[Black "Gavrilov, Alexei"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2309"]
[BlackElo "2498"]
[PlyCount "56"]
[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 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Qc2 Bb7 6. Nc3 c5 7. e4 cxd4 8. Nxd4 Bc5 9. Nb3 Nc6 10. Bg5 h6 11. Bh4 Nd4 12. Nxd4 Bxd4 13. Bd3 Qb8 14. Bg3 Be5 15. Ne2 Bxg3 16. hxg3 0-0 17. Rh4 d5 18. exd5 exd5 19. c5 Rc8 20. b4 a5 21. Bf5 Qe5 22. Rc1 Rc7 23. Rd4 axb4 24. axb4 Ba6 25. Bd3 bxc5 26. bxc5 Re8 27. Kf1 Rxc5 28. Qd1 Rxc1 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.02"]
[Round "4"]
[White "Voitsekhovsky, Stanislav"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2513"]
[BlackElo "2309"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 8. h3 e6 9. g4 d5 10. exd5 Nxd5 11. Bd2 Nc6 12. Nxc6 bxc6 13. Bg2 Rb8 14. Na4 Bd7 15. c4 Nb4 16. Bf4 c5 17. Bxb8 Qxb8 18. Nc3 Qe5+ 19. Kf1 Be7 20. Qd2 Bg5 21. Qe2 Qc7 22. h4 Be7 23. g5 0-0 24. Rd1 Nc6 25. Be4 Nd4 26. Qd3 g6 27. Qg3 Bd6 28. Qg2 f5 29. gxf6 Rxf6 30. Rh3 Bf4 31. Ne2 Qe5 32. Nxd4 cxd4 33. Kg1 Qc5 34. h5 g5 35. b4 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.08.01"]
[Round "3"]
[White "Kostin, Sergei Anatolievich"]
[Black "Nozdrachev, Vladislav"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2309"]
[BlackElo "2460"]
[PlyCount "75"]
[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 Nf6 2. Nf3 b6 3. c4 e6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e3 g6 8. Bb5+ c6 9. Bd3 Bg7 10. h4 c5 11. h5 Nc6 12. Ne4 f5 13. h6 Bf8 14. Neg5 Nc7 15. Bc4 Qf6 16. Bd2 cxd4 17. exd4 0-0-0 18. Qe2 Nxd4 19. Nxd4 Rxd4 20. Bc3 e5 21. Bxd4 exd4 22. Nf7 Bb4+ 23. Kf1 Re8 24. Qd3 Bf8 25. Rd1 Re4 26. f3 b5 27. Ba2 Ba6 28. b4 Be7 29. Kg1 Re6 30. Qxd4 Qxf7 31. Qd7+ Kb8 32. Bxe6 Nxe6 33. Kf2 Nf8 34. Qd5 Qf6 35. Rhe1 Bc8 36. Qxb5+ Ka8 37. Qe8 Qb6+ 38. Kf1 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.07.30"]
[Round "1"]
[White "Kostin, Sergei Anatolievich"]
[Black "Trusov, Boris"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "2309"]
[BlackElo "1924"]
[PlyCount "85"]
[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 Nf6 2. c4 e6 3. Nf3 b6 4. a3 c5 5. d5 d6 6. Nc3 Be7 7. e4 e5 8. Be2 0-0 9. h3 Ne8 10. 0-0 Na6 11. Ne1 f5 12. exf5 Bxf5 13. Bg4 Qd7 14. Nd3 Bxg4 15. Qxg4 Qxg4 16. hxg4 Nf6 17. g5 Nh5 18. Re1 Bd8 19. Nb5 Nf4 20. Bxf4 exf4 21. Nxd6 Bxg5 22. Nb5 Bd8 23. d6 Nb8 24. Ne5 a6 25. Nc7 Ra7 26. Ne6 Re8 27. Nxf4 Bf6 28. Ned3 Rxe1+ 29. Rxe1 Nc6 30. Nd5 Bd8 31. f4 Kf8 32. Ne5 Nb8 33. b4 Rb7 34. Rb1 cxb4 35. axb4 Ke8 36. Re1 Bh4 37. g3 Bxg3 38. Re3 Bh4 39. Ng6+ Kd7 40. Nxh4 Kxd6 41. Nf5+ Kd7 42. Re7+ Kc8 43. Nd6+ 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2012.07.30"]
[Round "2"]
[White "Shirokov, Viacheslav"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "A45"]
[BlackElo "2309"]
[PlyCount "98"]
[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 Nf6 2. e3 g6 3. Bd3 d6 4. f4 Bg7 5. Nf3 0-0 6. 0-0 Nbd7 7. e4 e5 8. fxe5 dxe5 9. d5 Ne8 10. c4 c5 11. Nc3 a6 12. Rb1 Nd6 13. a3 b5 14. b3 Rb8 15. Be3 h6 16. Qe2 bxc4 17. bxc4 Rxb1 18. Nxb1 f5 19. Bd2 f4 20. Qe1 g5 21. Ba5 Qe7 22. h3 h5 23. Nh2 Nf6 24. Bb6 Nb7 25. Ba5 g4 26. h4 Nxa5 27. Qxa5 Nd7 28. Qe1 Bf6 29. g3 fxg3 30. Qxg3 Bxh4 31. Qg2 Bg5 32. Nc3 Be3+ 33. Kh1 Qh4 34. Rxf8+ Nxf8 35. Ne2 Ng6 36. Qg3 Qg5 37. Nf1 Bf4 38. Qf2 Qe7 39. Nfg3 Qh4+ 40. Kg1 Qh3 41. Qg2 Be3+ 42. Kf1 Qh4 43. Nf5 Bxf5 44. exf5 Nf4 45. Nxf4 exf4 46. Be2 Kf7 47. d6 f3 48. Bxf3 gxf3 49. Qg6+ Kf8 0-1

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Baranov, Nikolay Aleksandrov"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "C84"]
[PlyCount "89"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. 0-0 Nf6 6. Nc3 b5 7. Bb3 0-0 8. d3 d6 9. a4 b4 10. Nd5 Na5 11. Nxf6+ Bxf6 12. Ba2 Rb8 13. h3 c5 14. Be3 b3 15. Bxb3 Nxb3 16. cxb3 Be6 17. Nd2 Bg5 18. Qc2 Bxe3 19. fxe3 Qg5 20. Rf3 Rb4 21. Nc4 Qe7 22. a5 Rfb8 23. Ra3 R8b5 24. Rf1 Qd8 25. Nd2 Qb8 26. Qc1 h6 27. Rf2 f6 28. Qd1 Kh7 29. Qh5 Qc7 30. Qd1 Qb7 31. Nc4 Qb8 32. Rd2 Rxb3 33. Rxb3 Rxb3 34. Kh2 Rb4 35. Qc1 Qb5 36. Kg1 Qc6 37. Qc2 Kg8 38. Kh2 d5 39. exd5 Bxd5 40. Nb6 Be6 41. Nc4 Qd7 42. Qd1 Qc7 43. Kg1 e4 44. b3 Qg3 45. Kh1 1-0

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Efimov, Albert Nikolaevich"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "C99"]
[WhiteElo "1966"]
[PlyCount "91"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. Nf1 Rfc8 15. Re2 exd4 16. Nxd4 g6 17. Ng3 Ne8 18. Bh6 Bf6 19. Rb1 Nc4 20. b3 Na3 21. Rc1 Qa5 22. Rd2 Rc5 23. Be3 Rac8 24. Nge2 Qc7 25. f3 b4 26. Kh1 Bg7 27. Qg1 a5 28. Qf2 Be5 29. Qg1 Ng7 30. Qf2 Nh5 31. Kg1 Ba6 32. g4 Nf6 33. Nf4 Rc3 34. g5 d5 35. Nfe2 Nxc2 36. Rdxc2 Rxc2 37. Rxc2 Qxc2 38. Nxc2 Rxc2 39. Bf4 Bxf4 40. Qb6 Bxe2 41. Qxf6 Be3+ 42. Kg2 Bxf3+ 43. Kxf3 Rf2+ 44. Kxe3 Rxf6 45. gxf6 h5 46. exd5 1-0

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Gluhov, Aleksandr Valerievi"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "D97"]
[WhiteElo "2291"]
[PlyCount "41"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 0-0 7. e4 a6 8. e5 Nfd7 9. Be3 b5 10. Qb3 c5 11. e6 cxd4 12. exf7+ Rxf7 13. Nxd4 Nc5 14. Qd5 Qxd5 15. Nxd5 Nbd7 16. Rd1 Bb7 17. Nc7 Rc8 18. Nde6 Bxb2 19. Bxc5 Nxc5 20. Nxc5 Rf5 21. N7xa6 1/2-1/2

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Kostin, Sergei Anatolievich"]
[Black "Abramov, Sergey Pavlovich"]
[Result "1/2-1/2"]
[ECO "C11"]
[BlackElo "2269"]
[PlyCount "76"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 Be7 9. dxc5 Nxc5 10. a3 0-0 11. Be2 b5 12. 0-0 Bb7 13. Rad1 Qc7 14. b4 Nd7 15. Bd3 g6 16. Qe1 Rad8 17. Ne2 Nb6 18. Qf2 Na4 19. Rde1 d4 20. Nexd4 Nxd4 21. Nxd4 Nb2 22. Be2 Bd5 23. Rb1 Nc4 24. Bxc4 Bxc4 25. Rfe1 Rd5 26. Nf3 Qc6 27. Nd2 Rd7 28. Bd4 Ba2 29. Rb2 Bd5 30. Nb3 Bxb3 31. Rxb3 Qc4 32. Rd3 a5 33. bxa5 Rfd8 34. Red1 Kg7 35. h3 Rxd4 36. Rxd4 Bc5 37. Rxd8 Bxf2+ 38. Kxf2 Qxf4+ 1/2-1/2

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Kostin, Sergei Anatolievich"]
[Black "Chukanov, Igor Anatolievich"]
[Result "1/2-1/2"]
[ECO "B12"]
[PlyCount "73"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Telechess CBM 157"]
[Source "ChessBase"]
[SourceDate "2013.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.12"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. 0-0 h6 7. a4 Ne7 8. a5 a6 9. Be3 Qc7 10. Nbd2 c5 11. c4 Nc6 12. cxd5 exd5 13. Rc1 Be7 14. dxc5 Ndxe5 15. Nxe5 Qxe5 16. Nf3 Qe6 17. Nd4 Nxd4 18. Bxd4 0-0 19. Re1 Bg5 20. Bd3 Qd7 21. Bxf5 Qxf5 22. Qc2 Qd7 23. Rcd1 Rae8 24. g3 Rxe1+ 25. Rxe1 Bd8 26. Qc3 f6 27. Qd2 Re8 28. Rd1 Bc7 29. Bc3 Rd8 30. Qe3 Qc6 31. b4 Re8 32. Qd3 Be5 33. Be1 Bc7 34. f3 Kf8 35. Bf2 Rd8 36. Rc1 Rd7 37. Re1 1/2-1/2

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Kostin, Sergei Anatolievich"]
[Black "Karelin, Evgeny Petrovich"]
[Result "1-0"]
[ECO "C88"]
[BlackElo "1978"]
[PlyCount "37"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. h3 Bb7 9. d3 Bc5 10. c3 h6 11. d4 Bd6 12. Nbd2 Re8 13. Bc2 Qb8 14. a3 a5 15. a4 Ba6 16. dxe5 Nxe5 17. Nxe5 Bxe5 18. Nf3 c5 19. Nxe5 1-0

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Kostin, Sergei Anatolievich"]
[Black "Shubin, Viktor Petrovich"]
[Result "1-0"]
[ECO "C42"]
[BlackElo "2129"]
[PlyCount "51"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Nxe5 Nf6 5. Bd3 d6 6. Nf3 Be7 7. 0-0 Bg4 8. Re1 0-0 9. h3 Bh5 10. c4 Qd7 11. Nc3 Nc6 12. Be3 Rae8 13. Be2 a6 14. d5 Bxf3 15. Bxf3 Ne5 16. Be2 Qc8 17. Qc2 Nfd7 18. Rad1 Bd8 19. b4 f5 20. f4 Bh4 21. fxe5 Bxe1 22. Rxe1 Nxe5 23. Qc1 f4 24. Bxf4 Qf5 25. Be3 Qg6 26. Kh2 1-0

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Kostin, Sergei Anatolievich"]
[Black "Zemlyanov, Sergey Mikhailovich"]
[Result "0-1"]
[ECO "B84"]
[BlackElo "1921"]
[PlyCount "54"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Be3 e6 7. Be2 Qc7 8. Qd2 b5 9. f3 Nbd7 10. g4 h6 11. a3 Bb7 12. 0-0-0 d5 13. exd5 Nxd5 14. Nxd5 Bxd5 15. Rhe1 Qb7 16. Kb1 Rd8 17. g5 hxg5 18. Bxg5 Nf6 19. Bd3 Be7 20. Qe2 Rd7 21. h4 Kf8 22. Be4 Kg8 23. Qg2 Kf8 24. Rd3 Qc7 25. Bxd5 Rxd5 26. f4 Qd7 27. Red1 g6 0-1

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Kostin, Sergei Anatolievich"]
[Black "Zhuravlev, Konstantin Nikolaev"]
[Result "1/2-1/2"]
[ECO "C88"]
[PlyCount "103"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. h3 Bb7 9. d3 d6 10. a3 Qd7 11. Nc3 Rfe8 12. Nd5 Nxd5 13. Bxd5 Nd8 14. Bxb7 Nxb7 15. Be3 c5 16. c3 Qe6 17. Qc2 Na5 18. b4 Nc6 19. Reb1 Red8 20. Qa2 Qxa2 21. Rxa2 f6 22. Kf1 Kf7 23. Ke2 Ke6 24. g3 g6 25. h4 h5 26. Nd2 g5 27. hxg5 fxg5 28. Nb3 cxb4 29. axb4 h4 30. gxh4 gxh4 31. Rba1 h3 32. Rxa6 Rxa6 33. Rxa6 h2 34. Ra1 Ra8 35. Rh1 Ra3 36. Na5 Nxa5 37. bxa5 Ra2+ 38. Kf3 Rxa5 39. Rxh2 Ra3 40. Rh6+ Kd7 41. Rh7 Ke6 42. d4 Rxc3 43. d5+ Kd7 44. Kg4 Rc7 45. Bd2 Rc8 46. f4 exf4 47. e5 Rg8+ 48. Kf3 Ke8 49. Bb4 Rg5 50. exd6 Bxd6 51. Bxd6 Rxd5 52. Bxf4 1/2-1/2

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Krutov, Aleksandr Pavlovich"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "C99"]
[WhiteElo "2033"]
[PlyCount "95"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. d5 Bc8 15. Nf1 Bd7 16. Ng3 Rfc8 17. Bd3 Nb7 18. Be3 Nc5 19. Rc1 Qb8 20. Bb1 a5 21. Nh4 g6 22. Nf3 Ra7 23. Nd2 Rac7 24. Nb3 Nxb3 25. Qxb3 b4 26. Rxc7 Rxc7 27. Rc1 Rxc1+ 28. Bxc1 Be8 29. Be3 Bd8 30. Bh6 Nd7 31. Qf3 Qb6 32. Nf5 Nc5 33. Ne3 Qc7 34. b3 Be7 35. Ng4 Qd8 36. g3 f6 37. h4 Bb5 38. Bc2 Kh8 39. h5 g5 40. Ne3 Kg8 41. Nf5 Bd7 42. Ne3 Qc8 43. Qe2 Nb7 44. Bd3 Qe8 45. Nf5 Bxf5 46. exf5 Nc5 47. Bb5 Qc8 48. Bc6 1/2-1/2

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Pezikov, Evgeny Ivanovich"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "C97"]
[WhiteElo "2337"]
[PlyCount "110"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. d5 Bd7 13. b3 g6 14. Bh6 Rfb8 15. Nbd2 Nh5 16. Be3 Nb7 17. Nf1 c4 18. b4 a5 19. a4 axb4 20. cxb4 c3 21. a5 Nxa5 22. Rxa5 Rxa5 23. bxa5 Qxa5 24. g4 Nf6 25. Qa1 Qc7 26. Rb1 h5 27. g5 Nh7 28. h4 b4 29. Ne1 Qc8 30. Rb3 f6 31. gxf6 Nxf6 32. Bg5 Qf8 33. f3 Nh7 34. Bxe7 Qxe7 35. Qa7 Qd8 36. Rb1 g5 37. Nd3 gxh4 38. Kh1 Ng5 39. Nxb4 Ra8 40. Qe3 Qf6 41. Qxc3 Kh8 42. f4 Nh3 43. f5 Nf2+ 44. Kh2 Ng4+ 45. Kg1 Bb5 46. Kh1 h3 47. Qg3 Be2 48. Nh2 Nxh2 49. Bd3 Rg8 50. Qe3 Bf3+ 51. Kxh2 Rg2+ 52. Kxh3 Rg4 53. Qf2 Qg5 54. Rg1 Rxg1 55. Qxf3 h4 0-1

[Event "RUS Moscow-ch qf email"]
[Site "ICCF email"]
[Date "2010.03.31"]
[Round "?"]
[White "Potapkin, Viktor Sergeevich"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "C99"]
[PlyCount "93"]
[EventDate "2010.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "RUS"]
[SourceTitle "Corr 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. d5 Rfc8 15. Bd3 Nd7 16. Nf1 Nc4 17. b3 Ncb6 18. Ne3 Nc5 19. Nf5 Bf8 20. Bc2 Nca4 21. Ne3 Nc3 22. Qd2 g6 23. Bb2 Bh6 24. Bd3 b4 25. Rac1 a5 26. h4 Nd7 27. Ng5 a4 28. a3 Nc5 29. axb4 Nxb3 30. Qxc3 Nxc1 31. Qxc7 Rxc7 32. Bxc1 a3 33. Bd2 f6 34. Ng4 fxg5 35. Nxh6+ Kg7 36. Ng4 a2 37. Ra1 Ra3 38. Bf1 Rc2 39. Bxg5 Kf8 40. Kh2 Bc8 41. Bh6+ Ke7 42. Bg5+ Kf8 43. Ne3 Rb2 44. Bh6+ Ke7 45. Bg5+ Kf8 46. Bh6+ Ke7 47. Bg5+ 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.12"]
[Round "9"]
[White "Fedosov, Yury"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "2060"]
[BlackElo "2284"]
[PlyCount "78"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. Nf3 g6 5. e3 Bg7 6. Bd3 c6 7. 0-0 0-0 8. Re1 Re8 9. e4 dxe4 10. Nxe4 Nxe4 11. Rxe4 Nf6 12. Rh4 Bg4 13. Bc4 Bxf3 14. Qxf3 Qa5 15. Bxf6 exf6 16. Re4 f5 17. Rxe8+ Rxe8 18. c3 Qb6 19. b4 Qd8 20. Rd1 Qe7 21. h3 Qe4 22. Qxe4 fxe4 23. Kf1 Kf8 24. Ke2 f5 25. a4 Ke7 26. Bb3 f4 27. c4 Kd6 28. c5+ Kc7 29. d5 cxd5 30. Rxd5 Rf8 31. b5 f3+ 32. gxf3 Rxf3 33. Bc2 Rxh3 34. Bxe4 Rc3 35. b6+ axb6 36. cxb6+ Kxb6 37. Rd7 Be5 38. Rxb7+ Ka6 39. Rxh7 g5 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.11"]
[Round "8"]
[White "Kostin, Sergei Anatolievich"]
[Black "Provotorov, Alexandr P"]
[Result "1/2-1/2"]
[ECO "E42"]
[WhiteElo "2284"]
[BlackElo "2375"]
[PlyCount "89"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nge2 cxd4 6. exd4 d5 7. c5 Ne4 8. Bd2 Nxd2 9. Qxd2 0-0 10. a3 Bxc3 11. Nxc3 b6 12. Be2 Ba6 13. Bxa6 Nxa6 14. Qd3 Nc7 15. 0-0 bxc5 16. dxc5 d4 17. Ne4 Qd5 18. b4 e5 19. Nd6 Ne6 20. f3 Rad8 21. Rfe1 f6 22. Qe4 Rxd6 23. cxd6 Qxd6 24. Rac1 Rd8 25. Qc6 Qe7 26. g3 h5 27. f4 d3 28. Rcd1 d2 29. Re3 Nd4 30. Qc4+ Kh8 31. Kf2 Qd7 32. Rxd2 Qh3 33. Ke1 Rc8 34. Qd3 Rc1+ 35. Rd1 Nc2+ 36. Kd2 Rxd1+ 37. Kxd1 Nxe3+ 38. Qxe3 exf4 39. Qe8+ Kh7 40. Qe4+ g6 41. Qe7+ Kh6 42. Qf8+ Kh7 43. Qf7+ Kh6 44. Qf8+ Kh7 45. Qf7+ 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.10"]
[Round "7"]
[White "Vlasov, Andrey"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2262"]
[BlackElo "2284"]
[PlyCount "104"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Qc7 8. a4 Be7 9. Be2 0-0 10. 0-0 h6 11. a5 Nbd7 12. Nd2 b5 13. axb6 Nxb6 14. Bxb6 Qxb6 15. Nc4 Qc6 16. Ne3 Be6 17. Ncd5 Bxd5 18. exd5 Qb7 19. Nf5 Rfe8 20. Ra3 Bf8 21. Rg3 g6 22. Rb3 Qa7 23. Ne3 Ne4 24. h4 Reb8 25. Ra3 Rxb2 26. Rxa6 Qb7 27. Rxa8 Qxa8 28. h5 Qa7 29. hxg6 fxg6 30. Bd3 Nf6 31. Ng4 Qf7 32. Nxf6+ Qxf6 33. Qg4 Kg7 34. Ra1 Rb7 35. Ra8 Rf7 36. f3 h5 37. Qg3 Rb7 38. Qxg6+ Qxg6 39. Bxg6 h4 40. Bf5 Be7 41. Kh2 Kf6 42. Be4 Kg5 43. Rh8 Kf4 44. Rh7 Ra7 45. Kh3 Rc7 46. Rg7 Bd8 47. Rxc7 Bxc7 48. Kxh4 Bd8+ 49. Kh5 Kg3 50. Kg6 Bb6 51. Kf5 Bc5 52. Ke6 Ba3 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.08"]
[Round "6"]
[White "Kostin, Sergei Anatolievich"]
[Black "Barykin, Valentin"]
[Result "1-0"]
[ECO "A60"]
[WhiteElo "2284"]
[BlackElo "2113"]
[PlyCount "79"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 Be7 7. Bg2 0-0 8. Nf3 Bd7 9. a4 Na6 10. 0-0 Re8 11. Nd2 Qc8 12. Nc4 Bh3 13. e4 Rd8 14. Re1 Bxg2 15. Kxg2 Nb4 16. h3 Nd7 17. f4 Nb6 18. b3 Qd7 19. Bb2 Bf8 20. Qd2 g6 21. Rad1 Nxc4 22. bxc4 f6 23. e5 fxe5 24. fxe5 dxe5 25. Ne4 Qf5 26. Re2 Nc6 27. Rf1 Qc8 28. Rxf8+ Rxf8 29. dxc6 Qxc6 30. Qd5+ Qxd5 31. cxd5 b6 32. Bxe5 Rad8 33. d6 Rf5 34. Bc3 Kf7 35. g4 Rd5 36. Rf2+ Ke6 37. Rf6+ Kd7 38. Rf7+ Kc8 39. Rxa7 h5 40. Ra8+ 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.07"]
[Round "5"]
[White "Yandemirov, Valeri"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "A31"]
[WhiteElo "2504"]
[BlackElo "2284"]
[PlyCount "123"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c4 b6 4. Nc3 d6 5. d4 cxd4 6. Nxd4 Nf6 7. Be2 Bb7 8. f3 a6 9. 0-0 Be7 10. Be3 0-0 11. Qd2 Nbd7 12. Rfd1 Rc8 13. Rac1 Qc7 14. Kh1 Qb8 15. Bg1 Bd8 16. Nc2 Bc7 17. Ne3 Kh8 18. Qe1 Rg8 19. Rd2 g5 20. Rcd1 Rg6 21. Ng4 Nxg4 22. fxg4 Ne5 23. Bd4 Kg8 24. Qf2 Bc6 25. b4 Rh6 26. b5 axb5 27. Nxb5 Bxb5 28. cxb5 d5 29. h3 dxe4 30. Qe3 Ng6 31. Qxe4 Nf4 32. Bf3 Nd5 33. Bb2 Bf4 34. Rxd5 exd5 35. Qd4 f6 36. Qxd5+ Kh8 37. Qf5 Rf8 38. Rd7 Qe8 39. Be4 Rf7 40. Rxf7 Qxf7 41. Bd5 Qf8 42. Bd4 Rg6 43. Bxb6 Qb4 44. Bg1 Bd6 45. b6 Qf4 46. b7 Kg7 47. Qxf4 gxf4 48. Be4 Rg5 49. Bf5 Kh6 50. Bc5 Rg7 51. Bxd6 Rxb7 52. Bxf4+ Kg7 53. Be6 Rb1+ 54. Kh2 Rd1 55. Kg3 Kf8 56. Bb3 Rd3+ 57. Kf2 Ke7 58. Ke2 Rd8 59. a4 Kd7 60. a5 Kc6 61. a6 Re8+ 62. Be3 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.06"]
[Round "4"]
[White "Kostin, Sergei Anatolievich"]
[Black "Zhelnin, Vladimir V"]
[Result "0-1"]
[ECO "D20"]
[WhiteElo "2284"]
[BlackElo "2433"]
[PlyCount "94"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e3 Be6 4. Ne2 Bd5 5. Nec3 Nf6 6. Nd2 e6 7. e4 Bc6 8. e5 Nd5 9. Nxc4 Bb4 10. Bd2 Qh4 11. Nxd5 Bxd2+ 12. Qxd2 Bxd5 13. Ne3 Bc6 14. Be2 0-0 15. 0-0 Rd8 16. f4 Be4 17. g3 Qe7 18. Rac1 Nc6 19. Rxc6 Bxc6 20. f5 Qc5 21. Rd1 Qe7 22. f6 gxf6 23. Ng4 fxe5 24. Qh6 f5 25. Nxe5 Rd6 26. Bh5 Rf8 27. Re1 Bd5 28. Qf4 Rb6 29. b3 c5 30. dxc5 Qxc5+ 31. Kf1 Qe7 32. Rc1 Rd6 33. Bf7+ Rxf7 34. Nxf7 Kxf7 35. Rc8 Rd8 36. Rc7 Rd7 37. Rc8 Qf6 38. Qb8 Qa1+ 39. Ke2 Qxa2+ 40. Ke1 Qb1+ 41. Kf2 Qb2+ 42. Ke1 Qg7 43. Rh8 Re7 44. b4 Bc6 45. Rd8 Be8 46. Qxa7 Qc3+ 47. Kf2 Qxb4 0-1

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.05"]
[Round "3"]
[White "Kovalenko, Igor"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "E70"]
[WhiteElo "2413"]
[BlackElo "2284"]
[PlyCount "92"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 e5 6. d5 0-0 7. Nge2 a5 8. h3 Na6 9. Be3 c6 10. 0-0 cxd5 11. cxd5 Nc5 12. Bc2 Bd7 13. a3 a4 14. Qd2 Ne8 15. Rae1 Qa5 16. Nc1 f5 17. exf5 gxf5 18. f4 e4 19. N1e2 Nf6 20. Nd4 Rae8 21. Bb1 Kh8 22. Qd1 Re7 23. g4 Nd3 24. Bxd3 exd3 25. Ne6 Bxe6 26. dxe6 Rxe6 27. Bd4 Rfe8 28. Rxe6 Rxe6 29. g5 Ne4 30. Qxd3 Nxc3 31. bxc3 Kg8 32. Qc4 Bxd4+ 33. cxd4 Kf7 34. Rb1 Qa6 35. Rb5 Qc6 36. Rxf5+ Ke7 37. Qxc6 bxc6 38. Ra5 Re4 39. f5 Rxd4 40. Ra7+ Kf8 41. f6 Rh4 42. Kh2 Rh5 43. Rg7 h6 44. g6 Rf5 45. Rf7+ Kg8 46. h4 h5 1/2-1/2

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.04"]
[Round "2"]
[White "Kostin, Sergei Anatolievich"]
[Black "Nachev, Stanislav"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2284"]
[BlackElo "2424"]
[PlyCount "153"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. Nf3 e4 4. Ng5 f5 5. g3 Nf6 6. Bg2 c6 7. d5 h6 8. Nh3 g5 9. Nc3 Bg7 10. f3 0-0 11. 0-0 exf3 12. exf3 c5 13. Nf2 Nbd7 14. f4 g4 15. Qc2 Ne8 16. b3 h5 17. Bb2 Rf7 18. Rfe1 Nf8 19. Ncd1 Bd7 20. Bf1 Bxb2 21. Qxb2 h4 22. Ne3 Ng7 23. Bd3 Nh5 24. Nf1 a6 25. b4 b6 26. bxc5 bxc5 27. Rab1 hxg3 28. hxg3 Rh7 29. Re3 Rh6 30. Qc2 Qf6 31. Rb7 Ng7 32. Qb2 Qxb2 33. Rxb2 Ra7 34. Re7 Rf6 35. Rb8 Rf7 36. Rxf7 Kxf7 37. Ne3 a5 38. Nfd1 Ng6 39. Rb6 Ke7 40. Nc3 Nf8 41. Nb5 Bxb5 42. Rxb5 Kf6 43. Rb6 Rd7 44. Ra6 Ng6 45. Rxa5 Nh8 46. a4 Nf7 47. Kf2 Rb7 48. Rb5 Ra7 49. Bc2 Nd8 50. Rb6 Nb7 51. Ke2 Ke7 52. Nxf5+ Nxf5 53. Bxf5 Nd8 54. Bc2 Kd7 55. Ke3 Kc7 56. Rb1 Ra8 57. Rh1 Nb7 58. Rh7+ Kb6 59. Rh6 Ka5 60. Rh7 Rb8 61. f5 Kb4 62. Kd3 Na5 63. Rg7 Rf8 64. Rg5 Rf7 65. Bd1 Rf6 66. Rxg4 Rxf5 67. Rf4 Rg5 68. g4 Rg8 69. Rf6 Rg5 70. Rf5 Rg8 71. g5 Rg7 72. Bh5 Kxa4 73. g6 Rb7 74. Bd1+ Kb4 75. Rf7 Rb8 76. g7 Rg8 77. Bg4 1-0

[Event "Kaluga Tsiolkovsky Memorial op"]
[Site "Kaluga"]
[Date "2007.08.03"]
[Round "1"]
[White "Kulikova, Alena"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "A45"]
[BlackElo "2284"]
[PlyCount "118"]
[EventDate "2007.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d6 3. Bxf6 exf6 4. Nf3 f5 5. g3 Nd7 6. Bg2 g6 7. Nc3 Bg7 8. e3 0-0 9. 0-0 Re8 10. Ne2 Nf6 11. c4 c6 12. Rc1 Ne4 13. Nd2 a6 14. Qc2 d5 15. Nxe4 fxe4 16. Nc3 b5 17. cxd5 cxd5 18. Qb3 Be6 19. a4 Rb8 20. axb5 axb5 21. Ne2 Qd7 22. Rc2 Rbc8 23. Rfc1 Rc4 24. Nc3 Rb8 25. Bf1 Qe8 26. Bxc4 bxc4 27. Qa4 Qd8 28. Ra1 h5 29. Qa5 Qg5 30. Qc7 Rc8 31. Qf4 Qe7 32. Nb5 g5 33. Qd6 Qf6 34. g4 Rd8 35. Qe5 Qxe5 36. dxe5 Bxg4 37. Rd2 Bxe5 38. Nc3 Bxc3 39. bxc3 Be6 40. Kg2 Rb8 41. Ra3 Rb1 42. h3 h4 43. f3 exf3+ 44. Kxf3 Rh1 45. Rd4 Rxh3+ 46. Kf2 Rh2+ 47. Kf3 Rh3+ 48. Kf2 Kg7 49. Ra1 Rh2+ 50. Kf3 Rc2 51. Ra3 Kf6 52. e4 g4+ 53. Ke3 dxe4 54. Rxe4 h3 55. Rf4+ Kg6 56. Rf2 Rc1 57. Kf4 Rg1 58. Ra6 g3 59. Rf3 h2 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.07.03"]
[Round "9"]
[White "Kostyuchenko, Vladimir"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "2152"]
[BlackElo "2284"]
[PlyCount "69"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Nf3 e5 7. d5 a5 8. 0-0 Na6 9. Bg5 h6 10. Bh4 Qe8 11. Ne1 Bd7 12. Nd3 Nh7 13. a3 a4 14. Nb5 h5 15. f3 f5 16. exf5 gxf5 17. Qxa4 e4 18. Nf4 Bxb2 19. Rab1 Bd4+ 20. Kh1 e3 21. Qc2 Be5 22. Ne6 Bxe6 23. dxe6 Qxe6 24. f4 Bg7 25. Bxh5 c6 26. Bf3 Kh8 27. Rfd1 cxb5 28. Bxb7 bxc4 29. Rb6 e2 30. Re1 Nc5 31. Bxa8 Rxa8 32. Rxe2 Ne4 33. g4 Qd5 34. Kg1 fxg4 35. Qb1 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.07.02"]
[Round "8"]
[White "Kostin, Sergei Anatolievich"]
[Black "Urjubdshzirov, Erdni"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "2284"]
[BlackElo "2218"]
[PlyCount "146"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 a5 6. Bg2 0-0 7. 0-0 c6 8. Qc2 b6 9. a3 Be7 10. Bf4 Ba6 11. b3 Nbd7 12. Rd1 b5 13. Nbd2 bxc4 14. bxc4 Nh5 15. e4 Nxf4 16. gxf4 Nb6 17. Ne5 Rc8 18. c5 f6 19. Ng4 Nd7 20. Ne3 f5 21. exf5 exf5 22. Nf3 Kh8 23. Re1 g6 24. Nf1 Bf6 25. Ne5 Bxe5 26. fxe5 Re8 27. Qd2 Nf8 28. Re3 Rb8 29. Rh3 Bxf1 30. Bxf1 Qc7 31. Bd3 Ne6 32. Bc2 Rb2 33. Rb1 Rxb1+ 34. Bxb1 Rb8 35. Bc2 Qe7 36. f4 Rb2 37. Rb3 Rxb3 38. Bxb3 Qb7 39. Qe3 Qb5 40. Kf2 a4 41. Bd1 Qb2+ 42. Be2 Kg7 43. h4 Kf7 44. Kg3 Nxd4 45. Bd1 Nb3 46. Bf3 Ke6 47. h5 Nd2 48. Qd3 Nxf3 49. Qa6 Nxe5 50. Qc8+ Ke7 51. fxe5 Qxe5+ 52. Kg2 Qe2+ 53. Kg1 Qe3+ 54. Kg2 Qxc5 55. Qc7+ Ke6 56. h6 Qc2+ 57. Kg3 Qe4 58. Kf2 Qh4+ 59. Kf3 Qh5+ 60. Kf2 Qh4+ 61. Kf3 Qe7 62. Qxc6+ Ke5 63. Qxa4 g5 64. Qa6 g4+ 65. Kg3 Qd6 66. Qa4 Kf6+ 67. Kg2 f4 68. Qe8 f3+ 69. Kh1 g3 70. Qh8+ Kg5 71. Qg7+ Kh4 72. Qd4+ Kh3 73. Kg1 f2+ 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.07.01"]
[Round "7"]
[White "Chernenko, Ilya"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1787"]
[BlackElo "2284"]
[PlyCount "136"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 d5 4. e5 Nc6 5. Nf3 Qb6 6. a3 Bd7 7. b4 cxd4 8. cxd4 Rc8 9. Bb2 Na5 10. Nbd2 Nc4 11. Bxc4 dxc4 12. Rc1 Qa6 13. 0-0 Ne7 14. Ng5 h6 15. Qh5 g6 16. Qh3 Nd5 17. Nge4 Be7 18. Nc5 Bxc5 19. dxc5 c3 20. Bxc3 Nf4 21. Qe3 Ne2+ 22. Kh1 Nxc1 23. Rxc1 Bc6 24. Bd4 Bd5 25. Bb2 h5 26. Nf1 Rd8 27. Qf4 Qe2 28. Bc3 Qe4 29. Qg5 h4 30. f3 Qf5 31. Qxf5 gxf5 32. Ne3 h3 33. Bb2 hxg2+ 34. Kxg2 Ke7 35. Nxd5+ Rxd5 36. Rc2 Rhd8 37. Bc3 a6 38. Kg3 Kd7 39. Kf4 Rg8 40. h4 Rd1 41. Rh2 Rgg1 42. h5 Rh1 43. Rxh1 Rxh1 44. Kg5 Ke7 45. Bd4 Kf8 46. c6 bxc6 47. Bc5+ Kg7 48. h6+ Kg8 49. Be3 Rh3 50. Kf6 Rxf3 51. Bc5 Rxa3 52. h7+ Kxh7 53. Kxf7 Rd3 54. Kxe6 Kg6 55. Ke7 Rd5 56. e6 Kg7 57. Bd6 Rd2 58. Kd7 Re2 59. e7 Kf7 60. Kxc6 Rxe7 61. Bxe7 Kxe7 62. Kd5 Kf6 63. Kd4 Ke6 64. Ke3 Ke5 65. Kf3 Kd4 66. Kf4 Kc4 67. Kxf5 Kxb4 68. Ke4 Kc3 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.06.30"]
[Round "6"]
[White "Kostin, Sergei Anatolievich"]
[Black "Soloviev, Vladimir A"]
[Result "1-0"]
[ECO "A60"]
[WhiteElo "2284"]
[BlackElo "2342"]
[PlyCount "58"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Bg2 g6 7. Nc3 Bg7 8. e4 0-0 9. Nge2 Na6 10. 0-0 Nc7 11. a4 Rb8 12. h3 b6 13. Be3 Re8 14. Rb1 Na6 15. g4 Nb4 16. Ng3 Qd7 17. g5 Nh5 18. Nxh5 gxh5 19. Qe2 Bb7 20. Rfd1 h4 21. f4 Qe7 22. e5 h6 23. gxh6 Bxh6 24. Qg4+ Kh8 25. Qh5 Kg7 26. Kh1 dxe5 27. Rg1 Rh8 28. d6 Qxd6 29. Bd5+ Kf8 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.06.29"]
[Round "5"]
[White "Kostin, Sergei Anatolievich"]
[Black "Chernov, Yury"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2284"]
[BlackElo "2254"]
[PlyCount "149"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Bd3 Nbd7 8. Qc2 Nh5 9. Bxe7 Qxe7 10. Nge2 g6 11. g4 Ng7 12. Ng3 h5 13. gxh5 Nxh5 14. 0-0-0 Ndf6 15. Rde1 Be6 16. e4 dxe4 17. Ngxe4 Nxe4 18. Bxe4 Nf4 19. Kb1 Qd6 20. d5 cxd5 21. Nb5 Qc6 22. Nc7+ Kd7 23. Nxa8 dxe4 24. Qd1+ Nd3 25. f3 Bd5 26. fxe4 Bxe4 27. Rhf1 f5 28. Re3 Qb5 29. Rf2 Rxa8 30. Rd2 Rd8 31. Rdxd3+ Kc7 32. Qc2+ Qc6 33. Rxe4 Rxd3 34. Re7+ Rd7 35. Qe2 Qh1+ 36. Kc2 Qc6+ 37. Kb1 Rxe7 38. Qxe7+ Kb6 39. Qe3+ Kb5 40. Qe5+ Kc4 41. Qe2+ Kd4 42. Qf2+ Kd3 43. Qf1+ Ke3 44. Qe1+ Kd4 45. Qb4+ Ke5 46. Qe7+ Kf4 47. Qh4+ Kf3 48. Qg3+ Ke2 49. a3 Qe4+ 50. Ka2 f4 51. Qg4+ Kd2 52. h4 a5 53. Ka1 a4 54. Ka2 Ke3 55. Qg1+ Kd2 56. Qf2+ Kd3 57. Qf1+ Kd4 58. Qg1+ Ke5 59. h5 gxh5 60. Qg7+ Ke6 61. Qh6+ Kd7 62. Qxh5 f3 63. Qf7+ Kd6 64. Qf8+ Kc6 65. Qc8+ Kb5 66. Qd7+ Kc5 67. Qc7+ Kd4 68. Qc3+ Kd5 69. Qd2+ Kc5 70. Qf2+ Kb5 71. Qd2 Ka6 72. Qd6+ b6 73. Qf8 Kb5 74. Qf6 Ka6 75. Qf8 1/2-1/2

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.06.28"]
[Round "4"]
[White "Sivokho, Sergey V"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2466"]
[BlackElo "2284"]
[PlyCount "65"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 0-0 10. 0-0-0 a5 11. Qe1 Qc8 12. a4 Nc6 13. g4 Nb4 14. Kb1 Qc7 15. g5 Nd7 16. Qf2 Rfc8 17. Rd2 Qd8 18. h4 Rc7 19. f4 Rac8 20. f5 Bxb3 21. cxb3 Bf8 22. Bb5 Nc5 23. Bc4 Kh8 24. Bxc5 Rxc5 25. Bxf7 Qc7 26. Be6 Rxc3 27. bxc3 Qxc3 28. Qe2 d5 29. Bxc8 Qxc8 30. Rc1 Qd7 31. Qb5 Qf7 32. Rxd5 Nxd5 33. Qxd5 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.06.27"]
[Round "3"]
[White "Yevseev, Denis"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2525"]
[BlackElo "2284"]
[PlyCount "44"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Nf3 e5 7. Be3 exd4 8. Nxd4 Re8 9. f3 Nc6 10. Qd2 Nh5 11. Bg5 f6 12. Nxc6 bxc6 13. Bh6 f5 14. Bxg7 Nxg7 15. 0-0-0 Qf6 16. exf5 gxf5 17. f4 Rb8 18. Bf3 Bd7 19. Rhe1 Ne6 20. g3 Rb4 21. b3 Reb8 22. Re3 a5 1/2-1/2

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.06.26"]
[Round "2"]
[White "Kostin, Sergei Anatolievich"]
[Black "Gnidenko, Andrey"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2284"]
[BlackElo "2135"]
[PlyCount "111"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 0-0 8. Qd2 c5 9. h3 Qa5 10. Nf3 Rd8 11. Rc1 b5 12. Bd3 Nc6 13. d5 c4 14. Bb1 Qa3 15. 0-0 e6 16. Bg5 Rd7 17. Qe2 Ne5 18. Nd4 exd5 19. exd5 Bb7 20. Be4 Re8 21. Nxb5 Qa5 22. Rb1 Nd3 23. Qf3 Ne5 24. Qg3 Bxd5 25. Bxd5 Rxd5 26. Nd4 Nd3 27. Rb8 Rf8 28. Nc6 Be5 29. Qh4 Rxb8 30. Nxa5 Rxa5 31. Qxc4 Nc5 32. Bf4 Ra4 33. Qxc5 Bxf4 34. g3 Bh6 35. a3 Bf8 36. Qc7 Re8 37. Ra1 Bg7 38. Rd1 Rxa3 39. c4 Rc3 40. c5 a6 41. c6 Be5 42. Qb7 Re6 43. Rd8+ Kg7 44. Rd7 Rf6 45. c7 Bxc7 46. Rxc7 Rd3 47. Qb2 Rdd6 48. Rc4 Kg8 49. Qb8+ Kg7 50. Rc8 Rd1+ 51. Kg2 Rd2 52. Rg8+ Kh6 53. Qa7 Re2 54. Qd4 Rf5 55. Qh4+ Rh5 56. Qf4+ 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2007.06.25"]
[Round "1"]
[White "Klobukov, Sergey"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1998"]
[BlackElo "2284"]
[PlyCount "84"]
[EventDate "2007.06.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 0-0 5. e3 d6 6. Bc4 Nbd7 7. 0-0 c5 8. a4 b6 9. c3 Bb7 10. Qe2 a6 11. Rfe1 Qc7 12. h3 Rfe8 13. e4 d5 14. exd5 Nxd5 15. Qd3 e6 16. Nf1 cxd4 17. cxd4 h6 18. Bd2 Nf4 19. Qb3 Rac8 20. Rac1 Qb8 21. Be3 Bxf3 22. gxf3 Nxh3+ 23. Kg2 Nf4+ 24. Bxf4 Qxf4 25. Rcd1 a5 26. Re4 Qd6 27. Bb5 Re7 28. Ne3 Nf6 29. Nc4 Qc7 30. Rh4 g5 31. Rh2 Nd5 32. Rdh1 Nf4+ 33. Kf1 Rd8 34. Qc2 Rxd4 35. Rxh6 Bxh6 36. Rxh6 f5 37. Kg1 Rh7 38. Rxh7 Kxh7 39. Qb3 Rd3 40. Qc2 Rxf3 41. Qd2 Nh3+ 42. Kh1 Nxf2+ 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.07.01"]
[Round "9"]
[White "Shimanov, Aleksandr"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2300"]
[BlackElo "2280"]
[PlyCount "83"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. 0-0 Nc6 7. Nxc6 Qxc6 8. b3 b5 9. Bb2 Nf6 10. Nd2 Bb7 11. Qe2 Bb4 12. c4 Bxd2 13. Qxd2 bxc4 14. bxc4 Nxe4 15. Bxe4 Qxe4 16. f3 Qc6 17. Bxg7 Rg8 18. Bd4 Qxc4 19. Rac1 Qd5 20. Rc5 Qd6 21. Qc3 f5 22. Be5 Qb6 23. Bd4 Qd6 24. Be5 Qe7 25. Rd1 Bd5 26. Bf6 Qd6 27. Be5 Qe7 28. Bf6 Qd6 29. Bh4 Rg6 30. Rcxd5 exd5 31. Qh8+ Qf8 32. Qe5+ Kf7 33. Qxd5+ Kg7 34. Qe5+ Kg8 35. Rxd7 Re8 36. Qd5+ Rge6 37. h3 Qb4 38. Qxf5 Re1+ 39. Kh2 R1e7 40. Qg5+ Kh8 41. Rxe7 Qd6+ 42. Qe5+ 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.06.30"]
[Round "8"]
[White "Kostin, Sergei Anatolievich"]
[Black "Goganov, Aleksey"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2280"]
[BlackElo "2175"]
[PlyCount "88"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 Nf6 6. e3 0-0 7. Bd3 Nbd7 8. Nge2 Re8 9. 0-0 Nf8 10. Qc2 c6 11. Rae1 Ng6 12. Bg3 Bd6 13. Bxd6 Qxd6 14. Ng3 Bd7 15. Na4 b6 16. a3 Nh4 17. b4 Rac8 18. f3 c5 19. dxc5 Bxa4 20. Qxa4 Qe5 21. cxb6 axb6 22. b5 Rc3 23. Bxh7+ Nxh7 24. Qxh4 Rxe3 25. Rd1 Rxa3 26. Qb4 Re3 27. f4 Qe6 28. Qd4 Nf6 29. Rc1 Qg4 30. Qxb6 R3e6 31. Qd4 Ne4 32. Qxd5 Nxg3 33. hxg3 Qxg3 34. Qf3 Qh4 35. Rc6 Re1 36. Rc1 R1e6 37. Qf2 Qh5 38. Rc5 Qg4 39. Rg5 Qe2 40. Qxe2 Rxe2 41. Rb1 f6 42. Rd5 Rc2 43. b6 Rb8 44. Rd7 g5 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.06.29"]
[Round "7"]
[White "Silivanov, Sergej"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2355"]
[BlackElo "2280"]
[PlyCount "114"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 g6 5. Na3 cxd4 6. Nb5 Na6 7. cxd4 Bg7 8. Nf3 Nh6 9. Nc3 Qd8 10. Qa4+ Bd7 11. Qb3 Qb6 12. Qxb6 axb6 13. Nd5 Bc6 14. Nxb6 Rd8 15. d5 Bxd5 16. Nxd5 Rxd5 17. Bc4 Rc5 18. Bb3 Nf5 19. 0-0 0-0 20. Rd1 h5 21. h3 Rfc8 22. g4 hxg4 23. hxg4 Nd4 24. Nxd4 Bxd4 25. Rxd4 Rxc1+ 26. Rxc1 Rxc1+ 27. Kg2 e6 28. Bd1 Rb1 29. Rd2 Nc5 30. Bf3 Kg7 31. g5 f6 32. Bxb7 fxg5 33. Bc6 Kf6 34. Rc2 Nd3 35. Rd2 Nxb2 36. Bb5 Nd1 37. Bd3 Rc1 38. Rc2 Rb1 39. Rd2 Rc1 40. a4 Ra1 41. a5 Nc3 42. a6 Nd5 43. Bc4 Ra4 44. Bb5 Ra5 45. Bf1 Ke5 46. Rb2 Kd6 47. Rb8 Nc7 48. Rg8 Ra4 49. Rb8 Kc6 50. Rb3 Ra5 51. Rc3+ Kd7 52. Rd3+ Kc6 53. Re3 Kd6 54. Rb3 Kc6 55. Rc3+ Kd6 56. Rb3 Kc6 57. Rc3+ Kd6 1/2-1/2

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.06.28"]
[Round "6"]
[White "Kostin, Sergei Anatolievich"]
[Black "Kuzmin, Yuriy"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2280"]
[BlackElo "2114"]
[PlyCount "71"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. f3 d6 6. Bg5 Nc6 7. Nge2 a6 8. Qd2 Re8 9. d5 Na5 10. Nc1 c5 11. Be2 Rb8 12. a4 h5 13. 0-0 Nh7 14. Be3 e6 15. Rb1 exd5 16. cxd5 Bd7 17. b4 cxb4 18. Rxb4 b5 19. axb5 Qc8 20. N1a2 axb5 21. Rc1 Nc4 22. Bxc4 bxc4 23. Ne2 Rxb4 24. Nxb4 Bb5 25. Nd4 Qb7 26. Qc2 Rc8 27. Nbc6 Bxd4 28. Nxd4 Qa6 29. Qc3 Bd7 30. h3 Nf8 31. h4 f6 32. Nc2 Kf7 33. Bd4 Nh7 34. Ne3 Bb5 35. Ra1 Ba4 36. Qb4 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.06.27"]
[Round "5"]
[White "Utkin, Aleksey"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2388"]
[BlackElo "2280"]
[PlyCount "73"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d6 5. c3 0-0 6. e4 Nbd7 7. Bc4 c6 8. Bb3 Qc7 9. 0-0 b5 10. Re1 e5 11. Nf1 Re8 12. Ng3 h6 13. Bd2 Bb7 14. Qc1 h5 15. Bh6 Nf8 16. Bxg7 Kxg7 17. Nh4 Bc8 18. Re3 c5 19. Ngf5+ Bxf5 20. exf5 cxd4 21. Rg3 Qd7 22. fxg6 fxg6 23. Qg5 N6h7 24. Qxh5 dxc3 25. bxc3 Kh8 26. Nxg6+ Nxg6 27. Qxg6 Rf8 28. Rd1 Qe7 29. Rxd6 e4 30. Re6 Qf7 31. Qxf7 Rxf7 32. Rxe4 Rd8 33. h3 Rc7 34. Reg4 Nf6 35. Rg6 Ne4 36. Rh6+ Rh7 37. Rxh7+ 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.06.26"]
[Round "4"]
[White "Kostin, Sergei Anatolievich"]
[Black "Gritsenko, Andrey"]
[Result "0-1"]
[ECO "D80"]
[WhiteElo "2280"]
[BlackElo "2341"]
[PlyCount "158"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Bg5 Ne4 5. Bf4 d5 6. Nc3 Nxc3 7. bxc3 c5 8. e3 0-0 9. Bd3 cxd4 10. exd4 dxc4 11. Bxc4 Nc6 12. 0-0 Na5 13. Bb3 Nxb3 14. axb3 Bf5 15. Re1 Re8 16. Ne5 a6 17. Qf3 Be6 18. Qxb7 Rb8 19. Qxa6 Rxb3 20. Nc6 Qd7 21. c4 h6 22. Rac1 Bf5 23. d5 Bb2 24. d6 exd6 25. Rcd1 Bc2 26. h3 Bxd1 27. Rxd1 Re6 28. Bxh6 Bf6 29. Nd4 Bxd4 30. Rxd4 Rb1+ 31. Kh2 Rb2 32. Qa8+ Qe8 33. Qf3 Re1 34. Rxd6 Qe5+ 35. Bf4 Qe7 36. Rd5 Ree2 37. Bg3 Rb1 38. Qf4 Ree1 39. Bh4 Rh1+ 40. Kg3 Rb3+ 41. f3 Qe1+ 42. Kg4 Qe6+ 43. Kg3 Qe1+ 44. Kg4 f5+ 45. Kg5 Qe7+ 46. Kh6 Qh7+ 47. Kg5 Qe7+ 48. Kh6 Qh7+ 49. Kg5 Qh5+ 50. Kf6 Rb6+ 51. Rd6 Rxd6+ 52. Qxd6 Qxh4+ 53. Kxg6 Qh7+ 54. Kg5 Qf7 55. Qb8+ Kh7 56. Qe5 Rg1 57. g4 fxg4 58. Qe4+ Kg7 59. Qd4+ Kh7 60. Qxg1 Qe7+ 61. Kf4 Qc7+ 62. Kg5 Qg7+ 63. Kf4 Qf6+ 64. Ke4 Qxf3+ 65. Kd4 g3 66. Qb1+ Kh6 67. Qc1+ Kh5 68. c5 g2 69. c6 Qf2+ 70. Kd5 g1Q 71. Qxg1 Qxg1 72. Kd6 Qd4+ 73. Ke7 Qe5+ 74. Kd7 Qd5+ 75. Kc7 Kg6 76. Kb6 Qb3+ 77. Ka7 Qa4+ 78. Kb6 Qa8 79. Kc7 Kf7 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.06.25"]
[Round "3"]
[White "Eliseev, Alexey"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "E81"]
[WhiteElo "2425"]
[BlackElo "2280"]
[PlyCount "124"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 a6 7. Qd2 c6 8. 0-0-0 b5 9. e5 Ne8 10. f4 Nd7 11. Nf3 bxc4 12. Bxc4 Nb6 13. Bb3 a5 14. exd6 Nxd6 15. Rhe1 Re8 16. Ne5 Qc7 17. f5 a4 18. Nxa4 Rxa4 19. fxg6 hxg6 20. Nxg6 Rc4+ 21. Bxc4 Ndxc4 22. Nxe7+ Rxe7 23. Rxe7 Qxe7 24. Bxe7 Nxd2 25. Kxd2 Bxd4 26. b4 Nc4+ 27. Kd3 Nb2+ 28. Kxd4 Nxd1 29. a4 f5 30. Bg5 Kf7 31. a5 Ke6 32. h4 Nf2 33. h5 Ne4 34. Bh4 Bb7 35. g3 Kf7 36. Ke5 Bc8 37. g4 Nd2 38. Kd6 fxg4 39. Kxc6 Nf3 40. Bg3 Nd4+ 41. Kc7 Ba6 42. Kb6 Be2 43. a6 Nf5 44. a7 Bf3 45. Bf2 g3 46. Bc5 Ng7 47. Bg1 Ne6 48. b5 Kf6 49. Be3 g2 50. Bg1 Kg5 51. Ka5 Kxh5 52. b6 Kg5 53. Kb5 Kf5 54. Bh2 Bb7 55. Kc4 Ke4 56. Bg1 Kf3 57. Kd3 Bd5 58. Kd2 Nf4 59. Bc5 Ke4 60. Kc3 Bc6 61. Bf2 Nh3 62. Bc5 Kf3 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.06.24"]
[Round "2"]
[White "Kostin, Sergei Anatolievich"]
[Black "Gugnin, Rostislav Serafimov"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2280"]
[BlackElo "2088"]
[PlyCount "89"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Be3 0-0 8. Qd2 c5 9. Nf3 Qa5 10. Rc1 Nc6 11. d5 Rd8 12. h3 e6 13. Be2 exd5 14. exd5 Be6 15. c4 Nb4 16. 0-0 Bf5 17. g4 Bd7 18. a3 Qxa3 19. Bxc5 a5 20. Bd4 Re8 21. Bxg7 Kxg7 22. Rfe1 Qa2 23. Qd4+ Kg8 24. Ra1 Qc2 25. Nd2 g5 26. Bf1 b6 27. Ne4 Rxe4 28. Rxe4 a4 29. Rae1 a3 30. Qf6 a2 31. Qxg5+ Kf8 32. Qe7+ Kg8 33. Qg5+ Kf8 34. Qh6+ Kg8 35. Re5 a1Q 36. Rg5+ Qg6 37. Rxa1 Rxa1 38. Rxg6+ hxg6 39. Qg5 Ba4 40. Qd8+ Kh7 41. Qe7 Nc2 42. Qxf7+ Kh6 43. h4 Bb3 44. g5+ Kh5 45. Qf3+ 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2006.06.23"]
[Round "1"]
[White "Penkov, Aleksey"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2006"]
[BlackElo "2280"]
[PlyCount "54"]
[EventDate "2006.06.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. Nc3 e6 4. Bc4 Nge7 5. d3 d5 6. Bb3 dxe4 7. dxe4 Qxd1+ 8. Nxd1 Nd4 9. Ne3 b5 10. c3 Nxb3 11. axb3 Bb7 12. e5 Nd5 13. Ne2 Nxe3 14. Bxe3 Bxg2 15. Rg1 Bd5 16. c4 bxc4 17. Nc3 g6 18. Nb5 Kd7 19. bxc4 Bxc4 20. Nxa7 Be7 21. Kd2 Rhb8 22. Kc2 Bb3+ 23. Kc3 Bd5 24. Ra3 c4 25. Ra2 Rb3+ 26. Kd2 Rd3+ 27. Ke2 Rxe3+ 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.26"]
[Round "9"]
[White "Kostin, Sergei Anatolievich"]
[Black "Matrosov, Vladimir"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2275"]
[BlackElo "2029"]
[PlyCount "109"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. Nc3 d5 5. Bf4 c6 6. e3 Be7 7. Bd3 0-0 8. 0-0 Ne4 9. Bc2 Nd7 10. Nxe4 fxe4 11. Nd2 Bg5 12. Bg3 Qe7 13. Qe2 Bh4 14. Bxh4 Qxh4 15. f3 exf3 16. Rxf3 Rxf3 17. Nxf3 Qh5 18. e4 Nf8 19. Qf2 b6 20. Ne5 Ba6 21. exd5 cxd5 22. b3 Rc8 23. Rf1 Qe8 24. Bd3 dxc4 25. bxc4 Qe7 26. Qe3 Qd8 27. Rf7 Rc7 28. Qf4 Ng6 29. Bxg6 hxg6 30. Rxc7 Qxc7 31. Qf1 g5 32. Qd3 Qd6 33. h3 Bb7 34. Qe3 Qd8 35. Kh2 Ba8 36. Ng4 Qc7+ 37. Qe5 Qc6 38. Ne3 g4 39. hxg4 a6 40. d5 exd5 41. cxd5 Qc8 42. Nf5 Qd7 43. Qb8+ Kh7 44. Qxa8 g6 45. Qc6 Qf7 46. Ng3 Qe7 47. Qc3 Qh4+ 48. Kg1 Qxg4 49. Qd3 Qf4 50. d6 Qc1+ 51. Nf1 Qc5+ 52. Kh1 Qg5 53. d7 Qd8 54. Qd4 Kg8 55. Nd2 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.25"]
[Round "8"]
[White "Ivanov, Alexey"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2303"]
[BlackElo "2275"]
[PlyCount "93"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[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. Kb1 Nc7 13. Bb6 Qb8 14. a4 Rc8 15. g4 Nxb5 16. Nxb5 d5 17. g5 Nd7 18. Bf2 d4 19. N3xd4 exd4 20. Bg3 Ne5 21. f4 Nc4 22. Qf2 Bg4 23. f5 Ne5 24. Rdf1 Bxg5 25. h4 Bf6 26. h5 h6 27. Rfg1 Rc4 28. Bxe5 Qxe5 29. Rxg4 Rxa4 30. Qg3 Rd8 31. Rg1 Qxg3 32. R4xg3 Kf8 33. Rd3 Rc4 34. Rgd1 Rb4 35. Nc7 Be5 36. Nd5 Rb5 37. Nc3 Rb4 38. Ne2 Re8 39. Nxd4 Bxd4 40. Rxd4 Rxe4 41. Rd8+ Re8 42. R8d7 Rb5 43. c4 Rxf5 44. Rxb7 Rxh5 45. Rdd7 Rf5 46. c5 Rf6 47. c6 1/2-1/2

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.24"]
[Round "7"]
[White "Kostin, Sergei Anatolievich"]
[Black "Smirnov, Artiom M"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2275"]
[PlyCount "79"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 c6 7. Qd2 a6 8. Nge2 b5 9. Nc1 e5 10. d5 b4 11. Nd1 cxd5 12. cxd5 a5 13. Be2 Na6 14. Nf2 Nc5 15. Nb3 Nxb3 16. axb3 Ba6 17. Bxa6 Rxa6 18. 0-0 Qa8 19. Ra2 Nd7 20. Nd3 Rc8 21. Be3 Nc5 22. Nxc5 dxc5 23. Rc1 Bf8 24. Ra4 Qb7 25. Qd3 Bd6 26. g3 Qb6 27. Kg2 Ra7 28. Raa1 Kg7 29. Rc2 Rac7 30. Rac1 Qb7 31. g4 h6 32. h4 f6 33. Qd2 h5 34. gxh5 gxh5 35. Kh2 Kh7 36. Qe2 Qa7 37. f4 exf4 38. Qxh5+ Kg8 39. Qg4+ Kf8 40. Bxf4 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.23"]
[Round "6"]
[White "Sorokina, Anastasia"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "E81"]
[WhiteElo "2117"]
[BlackElo "2275"]
[PlyCount "68"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 a6 7. Qd2 Nbd7 8. Nh3 c6 9. a4 a5 10. Be2 e5 11. d5 Nc5 12. Qc2 Bxh3 13. gxh3 Qd7 14. h4 Nh5 15. Be3 Qe7 16. 0-0-0 Rfd8 17. Rhg1 Bf6 18. f4 Nxf4 19. h5 Kg7 20. Kb1 Bg5 21. Rdf1 Rf8 22. Bd1 h6 23. Rg3 Kh7 24. Rfg1 Rg8 25. hxg6+ fxg6 26. Ne2 Raf8 27. Nc3 Bh4 28. Rf3 h5 29. Rgf1 Bg5 30. Ne2 Nh3 31. Rxf8 Rxf8 32. Rxf8 Qxf8 33. Bxg5 Nxg5 34. Nc3 Qf4 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.22"]
[Round "5"]
[White "Kostin, Sergei Anatolievich"]
[Black "Vrublevskaya, Olga"]
[Result "0-1"]
[ECO "D27"]
[WhiteElo "2275"]
[BlackElo "2157"]
[PlyCount "142"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 e6 4. e3 Nf6 5. Bxc4 c5 6. 0-0 a6 7. Bb3 Nc6 8. Nc3 cxd4 9. exd4 Be7 10. Be3 0-0 11. Qe2 Na5 12. Bc2 b5 13. Rad1 Bb7 14. Bg5 Rc8 15. Qd3 g6 16. Rfe1 Nc4 17. Bc1 b4 18. Na4 Bxf3 19. Qxf3 Nxb2 20. Bxb2 Rxc2 21. d5 Nxd5 22. Qe4 Rc8 23. Qe5 Bf6 24. Rxd5 Bxe5 25. Rxd8 Rfxd8 26. Bxe5 Rd2 27. Nb2 Rcc2 28. Rb1 Rxf2 29. Nd3 Rxg2+ 30. Kh1 Rgd2 31. Nxb4 Rc8 32. a3 a5 33. Nc6 Kf8 34. Bf4 Rd3 35. Nxa5 g5 36. Bxg5 Rxa3 37. Bh6+ Ke8 38. Nb7 Rca8 39. Bg7 Rd3 40. Nc5 Re3 41. Bd4 Re2 42. Kg1 Rd8 43. Bf6 Rc8 44. Rd1 Rc2 45. Nb3 R2c4 46. Rd3 Rg4+ 47. Kh1 Rg6 48. Bh4 f6 49. Bg3 e5 50. Nd2 Rd8 51. Rxd8+ Kxd8 52. Kg2 Kd7 53. Kf3 Ke6 54. Ne4 Rg8 55. Bh4 f5 56. Ng5+ Kd6 57. Nf7+ Kd5 58. Nh6 Rf8 59. Be7 Ra8 60. Ke3 Ra6 61. Bf8 Ke6 62. Bc5 Rc6 63. Bb4 Rc4 64. Be1 Kf6 65. Ng8+ Kf7 66. Nh6+ Kg6 67. Ng8 Re4+ 68. Kf2 Rf4+ 69. Kg3 Rf1 70. Ne7+ Kf7 71. Bb4 Rb1 0-1

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.21"]
[Round "4"]
[White "Truskavetsky, Alexandr"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "E95"]
[WhiteElo "2374"]
[BlackElo "2275"]
[PlyCount "83"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nbd7 8. Re1 c6 9. Bf1 Qe7 10. Rb1 Rd8 11. d5 h6 12. b4 Nf8 13. a4 cxd5 14. cxd5 N6h7 15. Be3 f5 16. Nb5 fxe4 17. Nd2 Nf6 18. Bxa7 Bf5 19. Rb2 h5 20. Nc4 N8d7 21. Ncxd6 Bg4 22. Qb3 Kh7 23. Nxb7 Rdc8 24. Be3 Nb6 25. N7d6 Rcb8 26. Bxb6 Rxb6 27. Nxe4 Nxe4 28. Rxe4 Bf5 29. d6 Qg5 30. Re3 e4 31. Rc2 Rf8 32. Qd5 Qf6 33. a5 Be6 34. Qc5 Rbb8 35. a6 Qa1 36. Rxe4 Bf5 37. Rc1 Qxa6 38. Re7 Kh8 39. Nd4 Qa2 40. Rxg7 Kxg7 41. Qe5+ Kg8 42. Bc4+ 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.20"]
[Round "3"]
[White "Kostin, Sergei Anatolievich"]
[Black "Utkin, Aleksey"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "2275"]
[BlackElo "2387"]
[PlyCount "86"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. Nc3 Bg7 5. Bg5 h6 6. Bh4 0-0 7. e3 Nbd7 8. Be2 c6 9. Qc2 Qc7 10. 0-0 e5 11. dxe5 dxe5 12. Nd2 Re8 13. Rad1 Nf8 14. b4 N6h7 15. Nde4 g5 16. Bg3 Bf5 17. Nf6+ Nxf6 18. Qxf5 a5 19. a3 axb4 20. axb4 Ra3 21. Ne4 Nxe4 22. Qxe4 Ra4 23. c5 b6 24. Bf3 Rc8 25. cxb6 Qxb6 26. Bxe5 Rxb4 27. Qf5 Re8 28. Bxg7 Kxg7 29. Rd6 Re6 30. Rxe6 Nxe6 31. Qe5+ Kg8 32. Qf6 Rb1 33. g3 c5 34. Be4 Rxf1+ 35. Kxf1 Qa6+ 36. Kg1 Qa4 37. Qf5 c4 38. Bd5 Qa1+ 39. Kg2 c3 40. Bxe6 fxe6 41. Qxe6+ Kg7 42. Qe7+ Kg6 43. Qe6+ Kg7 1/2-1/2

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.19"]
[Round "2"]
[White "Kostin, Sergei Anatolievich"]
[Black "Mukhlisov, Vladislav"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2275"]
[BlackElo "2015"]
[PlyCount "69"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 a6 5. Bd3 b5 6. b3 Bg4 7. Nbd2 Nbd7 8. Bb2 e6 9. 0-0 Bd6 10. Qc2 Bxf3 11. Nxf3 0-0 12. Ne5 Rc8 13. c5 Be7 14. f4 h6 15. h3 Nxe5 16. fxe5 Nd7 17. a4 f5 18. axb5 axb5 19. Ra6 Nb8 20. Ra7 Bg5 21. Qe2 Rc7 22. Ra8 Qe7 23. g3 Qf7 24. h4 Be7 25. h5 g6 26. g4 Bg5 27. Kh1 Qg7 28. hxg6 Qxg6 29. gxf5 exf5 30. Bc1 Rcf7 31. Qh2 Qe6 32. Qh3 Kg7 33. Ra2 Nd7 34. Raf2 Kg6 35. Be2 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2005.06.18"]
[Round "1"]
[White "Poleshchuk, Alexey"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "2041"]
[BlackElo "2275"]
[PlyCount "110"]
[EventDate "2005.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. g3 Bg7 5. Bg2 c5 6. Nge2 Nc6 7. d3 0-0 8. 0-0 Rb8 9. h3 Ne8 10. Be3 Nd4 11. Rb1 a5 12. a4 Nc7 13. f4 Bd7 14. b3 f5 15. Nb5 Bxb5 16. axb5 Kh8 17. Nxd4 cxd4 18. Bd2 Ne6 19. exf5 gxf5 20. Ra1 b6 21. b4 axb4 22. Bxb4 Qc7 23. Qh5 Nc5 24. Bxc5 dxc5 25. g4 e6 26. Rae1 Qd6 27. Bc6 Rbc8 28. gxf5 Rxf5 29. Qh4 Bf6 30. Qh6 Rg8+ 31. Kh1 Rg6 32. Qxg6 hxg6 33. Re4 e5 34. Rg1 Kg7 35. fxe5 Rxe5 36. Reg4 g5 37. Be4 Kf7 38. Rf1 Qe6 39. Kg2 Kg7 40. Rf3 Qd7 41. Rfg3 Qa7 42. h4 Qa2+ 43. Kh3 Qd2 44. Rg2 Qe3+ 45. R2g3 Qe2 46. hxg5 Be7 47. Rh4 Bxg5 48. Rh7+ Kg8 49. Rc7 Qh5+ 50. Kg2 Qe2+ 51. Kh3 Qf1+ 52. Bg2 Qf5+ 53. Kh2 Re3 54. Bd5+ Kf8 55. Rxe3 dxe3 0-1

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.22"]
[Round "9"]
[White "Kostin, Sergei Anatolievich"]
[Black "Sapunov, Evgeny"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "2298"]
[BlackElo "2488"]
[PlyCount "116"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. Bg5 h6 6. Bh4 0-0 7. e3 c5 8. Be2 g5 9. Bg3 Nh5 10. Qd3 g4 11. Nd2 cxd4 12. exd4 Nc6 13. Nb3 a5 14. a4 f5 15. f3 Nb4 16. Qd2 e5 17. dxe5 dxe5 18. 0-0-0 Qxd2+ 19. Rxd2 gxf3 20. gxf3 Nxg3 21. hxg3 e4 22. fxe4 fxe4 23. Nxe4 Bf5 24. Bf3 Bg6 25. Bg2 Rfe8 26. Re1 Rac8 27. c5 Bf7 28. Re3 b6 29. Rd7 Bh5 30. Bh3 Rb8 31. Bf5 Re5 32. g4 Be8 33. Rd6 bxc5 34. Nxa5 Na2+ 35. Kc2 Bxa4+ 36. b3 Bb5 37. Rh3 Rf8 38. Nc4 Rfxf5 39. gxf5 Rxe4 40. f6 Nb4+ 41. Kd2 Bf8 42. Rd8 Bxc4 43. bxc4 Rf4 44. Rg3+ Kf7 45. Rd7+ Kxf6 46. Rg8 Ke6 47. Rh7 Rf6 48. Rb7 Bd6 49. Ke3 Kf5 50. Rgg7 Bf4+ 51. Kf3 Nc6 52. Kg2 Ne5 53. Rbc7 Be3 54. Rg3 Bd4 55. Rh7 Nxc4 56. Rf3+ Kg6 57. Rxf6+ Bxf6 58. Rc7 Bd4 0-1

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.21"]
[Round "8"]
[White "Mishin, Alexei"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "2349"]
[BlackElo "2298"]
[PlyCount "139"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Nf6 5. d5 d6 6. e4 g6 7. Qd2 Nbd7 8. c4 a6 9. Nc3 Qa5 10. Nh3 Bg7 11. Nf2 b5 12. cxb5 0-0 13. bxa6 Bxa6 14. Bh6 Bxh6 15. Qxh6 Rfb8 16. Qd2 Bxf1 17. Rxf1 Ne5 18. Nfd1 Rb4 19. Kf2 Qb6 20. Rb1 c4+ 21. Kg3 Nh5+ 22. Kh3 Nd3 23. g3 Rb8 24. b3 Qd4 25. Qe3 Qxe3 26. Nxe3 cxb3 27. Rxb3 Rxb3 28. axb3 Rxb3 29. Ned1 Nf6 30. Ne2 Rb4 31. Ndc3 Nd7 32. Ra1 N7e5 33. f4 Nf3 34. Kg2 Nfe1+ 35. Kf1 Nc2 36. Ra7 Kf8 37. Ra2 Ne3+ 38. Kg1 Nc5 39. e5 Nc4 40. Ra8+ Kg7 41. Rc8 Na4 42. Nxa4 Rxa4 43. Rc7 dxe5 44. Rxe7 Kf6 45. Rc7 exf4 46. Nxf4 Ne5 47. Rc3 Rd4 48. h4 h6 49. Kf2 Kf5 50. Ke2 g5 51. hxg5 hxg5 52. Ng2 Ke4 53. Ne3 g4 54. d6 Rxd6 55. Nc4 Nxc4 56. Rxc4+ Rd4 57. Rc7 f6 58. Rc6 Ke5 59. Rc5+ Rd5 60. Rc4 Rd4 61. Rc5+ Kd6 62. Ra5 Rd5 63. Ra4 f5 64. Ke3 Ke5 65. Ra8 Rb5 66. Re8+ Kf6 67. Rf8+ Kg6 68. Rg8+ Kf7 69. Ra8 Kf6 70. Rg8 1/2-1/2

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.20"]
[Round "7"]
[White "Kostin, Sergei Anatolievich"]
[Black "Gabrielian, Artur"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2298"]
[BlackElo "2447"]
[PlyCount "54"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. d4 c5 8. Be3 Qa5 9. Qd2 0-0 10. Rc1 b6 11. d5 Nd7 12. c4 Qxd2+ 13. Bxd2 e5 14. Bd3 f5 15. 0-0 Nf6 16. Bb1 Re8 17. Rfe1 Bd7 18. h4 Ng4 19. Bc2 a6 20. a4 Nf6 21. Rb1 Rab8 22. Bc3 Nxe4 23. Bxe4 fxe4 24. Nd2 Bxa4 25. Ra1 b5 26. Nxe4 Rec8 27. Ng5 Rb6 1/2-1/2

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.19"]
[Round "6"]
[White "Schepetkova, Margarita"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2115"]
[BlackElo "2298"]
[PlyCount "52"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 g6 5. dxc5 Qxd1+ 6. Kxd1 Nf6 7. Bd3 Nbd7 8. b4 a5 9. Bb2 Bg7 10. Kc2 Ng4 11. Nh3 0-0 12. Re1 Nde5 13. Be2 Bf5+ 14. Kc1 Nxf2 15. Nxf2 Bh6+ 16. Kd1 Rfd8+ 17. Nd3 Bxd3 18. Bxd3 Nxd3 19. Rxe7 Nxb2+ 20. Kc2 Nc4 21. Rxb7 axb4 22. cxb4 Bg7 23. Nc3 Ra3 24. Nb5 Rd2+ 25. Kc1 Bb2+ 26. Kb1 Re3 0-1

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.18"]
[Round "5"]
[White "Kostin, Sergei Anatolievich"]
[Black "Olenin, Nikolay"]
[Result "1/2-1/2"]
[ECO "E42"]
[WhiteElo "2298"]
[BlackElo "2454"]
[PlyCount "68"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nge2 b6 6. a3 Ba5 7. Ng3 Bb7 8. Rb1 Bxc3+ 9. bxc3 Ne4 10. Qc2 f5 11. f3 Nxg3 12. hxg3 0-0 13. g4 g6 14. gxf5 exf5 15. d5 d6 16. Qf2 Nd7 17. Be2 Ba6 18. Qg3 Qf6 19. 0-0 Rae8 20. Qf4 Ne5 21. e4 fxe4 22. fxe4 Qxf4 23. Bxf4 Nf7 24. Bd3 h6 25. a4 g5 26. Bh2 Ne5 27. Bxe5 Rxf1+ 28. Rxf1 dxe5 29. a5 Kg7 30. Ra1 Ra8 31. Kf2 h5 32. Ke3 Kf6 33. Be2 g4 34. g3 Kg6 1/2-1/2

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.17"]
[Round "4"]
[White "Klyashtorny, Vladislav"]
[Black "Kostin, Sergei Anatolievich"]
[Result "0-1"]
[ECO "B99"]
[WhiteElo "2233"]
[BlackElo "2298"]
[PlyCount "88"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4 Be7 9. Qf3 Qc7 10. 0-0-0 Nbd7 11. Be2 b5 12. f5 e5 13. Ne6 fxe6 14. fxe6 Nb6 15. Bxf6 gxf6 16. Rxd6 Qxd6 17. Qh5+ Kd8 18. Rd1 Qxd1+ 19. Bxd1 Bxe6 20. Bg4 Bxg4 21. Qxg4 Kc7 22. Qe6 Rhe8 23. a4 bxa4 24. Nd5+ Nxd5 25. exd5 Bd6 26. Qxf6 Rad8 27. c4 Kb6 28. Qf2+ Bc5 29. Qc2 a3 30. bxa3 Bxa3+ 31. Kd1 Bc5 32. Qg6+ Ka7 33. Qc6 Rc8 34. Qd7+ Kb6 35. Ke2 e4 36. Qg7 e3 37. Qxh6+ Kb7 38. d6 Kc6 39. d7+ Kxd7 40. Qxa6 Rb8 41. Qa4+ Kd6 42. Qa6+ Rb6 43. Qa1 Rf8 44. Qg7 Rb2+ 0-1

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.16"]
[Round "3"]
[White "Gurin, Anatolij"]
[Black "Kostin, Sergei Anatolievich"]
[Result "1-0"]
[ECO "E92"]
[WhiteElo "2184"]
[BlackElo "2298"]
[PlyCount "127"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. Nge2 exd4 8. Nxd4 Re8 9. Qd2 Nc6 10. Be2 Nh5 11. Nxc6 bxc6 12. g4 Nf6 13. 0-0-0 Be6 14. Bg5 Qb8 15. e5 dxe5 16. Bxf6 Bxf6 17. Ne4 Bg7 18. g5 Qd8 19. Qe3 Qe7 20. h4 Red8 21. Rxd8+ Qxd8 22. Qc5 Qd4 23. Rd1 Qxc5 24. Nxc5 Bf5 25. Nb7 Re8 26. Nd8 c5 27. Nc6 e4 28. Nxa7 Bd4 29. fxe4 Bxe4 30. Bd3 Bf3 31. Rf1 Bg2 32. Rd1 c6 33. a3 Ra8 34. Nb5 cxb5 35. cxb5 Re8 36. Kc2 Bf3 37. Rd2 Bd5 38. a4 h6 39. gxh6 f5 40. h5 Kh7 41. hxg6+ Kxg6 42. h7 Be4 43. b4 Kxh7 44. b6 Kg6 45. a5 Rb8 46. Kb3 Be3 47. Re2 Bxd3 48. Rxe3 c4+ 49. Kc3 Kf6 50. b5 f4 51. Rh3 Ke5 52. a6 Be4 53. b7 Rg8 54. Rh7 f3 55. Re7+ Kf4 56. Rxe4+ Kxe4 57. a7 f2 58. a8Q Rg3+ 59. Kb4 Rb3+ 60. Kc5 f1Q 61. b8Q+ Kd3 62. Qg3+ Kc2 63. Qa2+ Kc1 64. Qg5+ 1-0

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.15"]
[Round "2"]
[White "Kostin, Sergei Anatolievich"]
[Black "Vasiliev, Vladimir P"]
[Result "0-1"]
[ECO "A54"]
[WhiteElo "2298"]
[BlackElo "2371"]
[PlyCount "78"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 e4 5. Ng5 Bf5 6. g3 h6 7. Nh3 c6 8. f3 Qe7 9. g4 Bc8 10. Kf2 Na6 11. Bg2 g5 12. Rf1 Bg7 13. Kg1 Nc7 14. e3 d5 15. Nf2 exf3 16. Bxf3 dxc4 17. e4 0-0 18. Qe2 b5 19. e5 Nfd5 20. Nfe4 Ne6 21. Be3 Nef4 22. Bxf4 Nxf4 23. Qd2 Be6 24. Ne2 Ng6 25. N2g3 Rad8 26. Nd6 Rxd6 27. exd6 Qxd6 28. Rad1 Rd8 29. Nf5 Bxf5 30. gxf5 Nf4 31. Kh1 Bxd4 32. Qc2 c5 33. Qe4 Kf8 34. f6 Qxf6 35. Qb7 Qb6 36. Qe4 Re8 37. Qh7 Qg6 38. Qxg6 fxg6 39. h4 Kg7 0-1

[Event "RUS Central Region-ch"]
[Site "Tula"]
[Date "2004.03.14"]
[Round "1"]
[White "Kostin, Sergei Anatolievich"]
[Black "Sobol, Alexander"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2298"]
[PlyCount "117"]
[EventDate "2004.03.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 d6 4. d4 cxd4 5. Nxd4 g6 6. e4 Bg7 7. Be2 Nc6 8. Be3 0-0 9. 0-0 Nxd4 10. Bxd4 Bd7 11. Rc1 Bc6 12. Qd3 Nd7 13. Bxg7 Kxg7 14. b4 b6 15. Qd4+ f6 16. f4 a5 17. a3 Ra7 18. Bg4 Nb8 19. b5 Bd7 20. Be2 Be6 21. f5 Bf7 22. fxg6 hxg6 23. Bg4 Nd7 24. Bxd7 Rxd7 25. Nd5 Rb7 26. Kh1 Rh8 27. Rf3 Rh5 28. h3 Re5 29. Rcf1 Bxd5 30. cxd5 Qc8 31. Rc3 Rc7 32. Rc6 Rxc6 33. bxc6 b5 34. Rb1 f5 35. exf5 Qxf5 36. Rc1 Kf7 37. Rd1 Qc2 38. Rf1+ Rf5 39. Re1 b4 40. axb4 axb4 41. Qh4 Re5 42. Rxe5 dxe5 43. Qxb4 e4 44. Kh2 Kf6 45. Qb6 Qc1 46. c7+ Ke5 47. Qe6+ Kd4 48. c8Q Qf4+ 49. Kg1 Qe3+ 50. Kf1 Qd3+ 51. Ke1 Qe3+ 52. Kd1 Qd3+ 53. Kc1 Qa3+ 54. Kd1 Qd3+ 55. Ke1 Qe3+ 56. Kf1 Qd3+ 57. Kg1 Qe3+ 58. Kh1 Qf4 59. Qb6+ 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2004.??.??"]
[Round "8"]
[White "Kostin, Sergei Anatolievich"]
[Black "Bistrikova, Elena V"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "2298"]
[BlackElo "2185"]
[PlyCount "83"]
[EventDate "2004.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Nf6 5. Bd3 Nbd7 6. Nbd2 Be7 7. 0-0 0-0 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 c5 11. Bc2 h6 12. Qd3 Nf6 13. Bf4 cxd4 14. Be5 Re8 15. Bxd4 b6 16. Ne5 Bb7 17. Qe3 Qc7 18. Rad1 Rac8 19. Ba4 Red8 20. a3 Rd6 21. b4 Ba8 22. Kh1 Rcd8 23. f3 Rc8 24. Rc1 Rdd8 25. Rfe1 Nh7 26. Nxf7 Kxf7 27. Qxe6+ Kf8 28. Bc2 Ng5 29. Bxg7+ Kxg7 30. Qg6+ Kf8 31. Qxh6+ Kg8 32. Qg6+ Kf8 33. Qh6+ Kg8 34. Re6 Rd6 35. Qg6+ Kf8 36. Rxd6 Qxd6 37. Qf5+ Kg7 38. Qxc8 Qf4 39. Re1 Bd6 40. Qd7+ Kh6 41. Re6+ Nxe6 42. Qh7+ 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2004.??.??"]
[Round "4"]
[White "Kostin, Sergei Anatolievich"]
[Black "Donets, Valentina"]
[Result "1-0"]
[ECO "E80"]
[WhiteElo "2298"]
[BlackElo "2164"]
[PlyCount "85"]
[EventDate "2004.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 Nc6 6. Nge2 a6 7. Bg5 Rb8 8. d5 Ne5 9. Nd4 h6 10. Be3 c5 11. Nc2 0-0 12. Qd2 Kh7 13. a4 e6 14. Be2 exd5 15. cxd5 Re8 16. 0-0 Bd7 17. Na3 Ng8 18. Kh1 Qe7 19. a5 Rf8 20. Rae1 Rbe8 21. f4 Ng4 22. Bxg4 Bxg4 23. Nc4 Qc7 24. f5 Bh5 25. h3 gxf5 26. exf5 Rxe3 27. Qxe3 Bd4 28. Qf4 f6 29. Qxd6 Qg7 30. Re4 Re8 31. Rxe8 Bxe8 32. Qf4 Bb5 33. Nxb5 axb5 34. Nb6 Bxb2 35. Rb1 Be5 36. Qg4 b4 37. Qxg7+ Kxg7 38. Nc4 Bd4 39. d6 Kf7 40. Re1 Be5 41. Nxe5+ fxe5 42. Rxe5 c4 43. d7 1-0

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2004.??.??"]
[Round "2"]
[White "Kostin, Sergei Anatolievich"]
[Black "Eliseev, Alexey"]
[Result "1/2-1/2"]
[ECO "E90"]
[WhiteElo "2298"]
[BlackElo "2445"]
[PlyCount "92"]
[EventDate "2004.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nf3 c5 4. d5 d6 5. e4 Nf6 6. Nc3 0-0 7. h3 a6 8. a4 e6 9. Bd3 exd5 10. exd5 Re8+ 11. Be3 Bh6 12. 0-0 Bxe3 13. fxe3 Qe7 14. e4 Nbd7 15. Qd2 Ne5 16. Nxe5 Qxe5 17. Qf2 Kg7 18. a5 Bd7 19. Rae1 Re7 20. Re3 Rf8 21. Rf3 Ng8 22. Nd1 f6 23. Ne3 Ref7 24. Kh1 Qd4 25. b4 Kh8 26. Nc2 Qxf2 27. R3xf2 cxb4 28. Rb1 f5 29. exf5 Ne7 30. Nd4 Bxf5 31. Bxf5 Nxf5 32. Nxf5 Rxf5 33. Rxf5 Rxf5 34. Rxb4 Rf7 35. Rb6 Rd7 36. Kh2 Kg7 37. Kg3 Kf7 38. Kf4 Ke8 39. Ke4 Kd8 40. Kd4 Kc7 41. c5 dxc5+ 42. Kxc5 Rf7 43. Re6 Kd7 44. Kb6 Rf5 45. Kxb7 Rxd5 46. Rxa6 Rb5+ 1/2-1/2

[Event "St Petersburg White Nights op"]
[Site "St Petersburg"]
[Date "2004.??.??"]
[Round "6"]
[White "Kostin, Sergei Anatolievich"]
[Black "Zacurdajev, Dmitry"]
[Result "0-1"]
[ECO "A93"]
[WhiteElo "2298"]
[BlackElo "2136"]
[PlyCount "82"]
[EventDate "2004.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Be7 4. g3 Nf6 5. Bg2 0-0 6. 0-0 c6 7. Qc2 Ne4 8. b3 f5 9. Bb2 Qe8 10. Ne5 Nd7 11. Nd3 Ndf6 12. f3 Nd6 13. Nd2 Qh5 14. Nf2 Qh6 15. Rfe1 f4 16. g4 Nf7 17. Qd3 Bd6 18. Nf1 e5 19. e4 dxe4 20. Nxe4 Nxe4 21. Rxe4 Ng5 22. Re2 e4 23. Rxe4 Nxe4 24. Qxe4 Bd7 25. c5 Rae8 26. Qd3 Bc7 27. d5 Qg5 28. Rd1 Qxd5 29. Qc2 Qf7 30. Nd2 Be5 31. Ne4 Bxb2 32. Qxb2 Rxe4 33. fxe4 f3 34. Rf1 Bxg4 35. h3 Bh5 36. Bh1 Qg6+ 37. Kh2 Qxe4 38. Qf2 Qe5+ 39. Qg3 Qxc5 40. Bxf3 Bxf3 41. Rxf3 Qc2+ 0-1

