[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.24"]
[Round "9"]
[White "Balandina, Anna"]
[Black "Efremov, Roman A"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "1464"]
[BlackElo "1614"]
[PlyCount "104"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. 0-0 Be7 5. d4 0-0 6. c4 dxc4 7. Qa4 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Nc3 Nbd7 11. b3 c5 12. dxc5 Bxc5 13. Bb2 Qc7 14. Rac1 Rac8 15. e3 Qb8 16. Qe2 Qa8 17. Nh4 Bxg2 18. Nxg2 Rfd8 19. Rfd1 Bb6 20. Nb1 Rxc1 21. Rxc1 Re8 22. Nf4 e5 23. Nd3 Nd5 24. Nc3 N5f6 25. Nb1 h5 26. Nd2 g6 27. h3 Ne4 28. Nxe4 Qxe4 29. Ba3 f5 30. Qd2 h4 31. Nc5 Bxc5 32. Bxc5 Nxc5 33. Rxc5 hxg3 34. fxg3 Qf3 35. Qd5+ Qxd5 36. Rxd5 Kf7 37. Rd6 Re6 38. Rd7+ Kf6 39. Kf2 Rc6 40. Rd2 e4 41. Ke2 Ke5 42. Kd1 g5 43. Rd8 Rh6 44. Re8+ Kd5 45. Rd8+ Ke5 46. Re8+ Kd5 47. Rd8+ Kc6 48. Rc8+ Kb7 49. Rg8 Rxh3 50. Rxg5 Kb6 51. b4 Rh1+ 52. Kc2 Rf1 1/2-1/2

[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.23"]
[Round "8"]
[White "Krikunova, Olesya"]
[Black "Efremov, Roman A"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "1940"]
[BlackElo "1614"]
[PlyCount "77"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Bf4 Bb4+ 4. Nd2 Nc6 5. a3 Bxd2+ 6. Qxd2 d6 7. Nf3 Qe7 8. Bg3 e5 9. d5 Nb8 10. Qc2 Nbd7 11. e4 Nc5 12. Bd3 a5 13. 0-0 a4 14. Nd2 Bd7 15. f4 Nh5 16. fxe5 Nxg3 17. exd6 Qxd6 18. hxg3 Qxg3 19. Rf3 Qd6 20. Qc3 f6 21. Bc2 0-0-0 22. Qa5 Kb8 23. b4 axb3 24. Nxb3 Nxb3 25. Rxb3 Qe5 26. Rab1 Qd4+ 27. Kh1 Bc8 28. c5 Rxd5 29. exd5 Qh4+ 30. Kg1 Qd4+ 31. Kf1 Qc4+ 32. Bd3 Qf4+ 33. Ke1 Re8+ 34. Kd1 Qg4+ 35. Kc1 Qg5+ 36. Qd2 Qxd5 37. Rc3 Rd8 38. c6 b6 39. Rxb6+ 1-0

[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.22"]
[Round "7"]
[White "Efremov, Roman A"]
[Black "Shinkorenko, Ivan Al"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "1614"]
[BlackElo "1799"]
[PlyCount "86"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Qf3 g6 7. h3 Bg7 8. Bg5 0-0 9. 0-0-0 Bd7 10. Qe3 Nc6 11. Nb3 a5 12. a3 Be6 13. Nc5 Qc8 14. N5a4 Nd7 15. f4 Rb8 16. g4 f6 17. Bh4 g5 18. fxg5 fxg5 19. Bxg5 Rxf1 20. Rhxf1 b5 21. Bh6 Be5 22. Nxb5 Rxb5 23. Rf3 Rb8 24. Rdf1 Nd4 25. R3f2 Qe8 26. Nc3 Nb5 27. Nxb5 Rxb5 28. Rf8+ Nxf8 29. Rxf8+ Qxf8 30. Bxf8 Kxf8 31. Qh6+ Kf7 32. Qh5+ Kg7 33. Qg5+ Kh8 34. Qxe7 Bg8 35. c3 Rb8 36. Kc2 Bb3+ 37. Kd2 a4 38. h4 Bc4 39. Kc2 Kg8 40. Qg5+ Kh8 41. Qe7 Bb3+ 42. Kd2 Bf4+ 43. Kd3 Be5 1/2-1/2

[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.21"]
[Round "6"]
[White "Dolinskii, Sergei"]
[Black "Efremov, Roman A"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1409"]
[BlackElo "1614"]
[PlyCount "43"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bb4 7. 0-0 Nge7 8. Bg5 0-0 9. Nb5 a6 10. Nd6 Bxd6 11. Qxd6 f6 12. Be3 Qe8 13. Bb6 f5 14. e5 f4 15. Bd3 Nf5 16. Bxf5 Rxf5 17. Rac1 a5 18. a3 Ra6 19. Qc7 a4 20. Rfd1 Ra8 21. Nd4 Nxd4 22. Rxd4 0-1

[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.21"]
[Round "5"]
[White "Efremov, Roman A"]
[Black "Babarykin, Aleksandr"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "1614"]
[BlackElo "1288"]
[PlyCount "94"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 Nf6 6. exd5 cxd5 7. d4 e6 8. Bd3 Bd6 9. 0-0 0-0 10. Ne2 Nc6 11. c3 a6 12. Bg5 Be7 13. Ng3 Nd7 14. Bf4 Re8 15. Rfe1 Bg5 16. Qh5 h6 17. Bxg5 Qxg5 18. Qxg5 hxg5 19. Rad1 b5 20. a3 Rab8 21. Ne2 Ra8 22. Ra1 Reb8 23. a4 b4 24. a5 Nf6 25. Rec1 Ne8 26. c4 Ne7 27. cxd5 Nxd5 28. Rc6 Nec7 29. Rac1 Nb5 30. R1c5 Kf8 31. Be4 Ne7 32. Rb6 Rxb6 33. axb6 Rb8 34. Rxg5 Rxb6 35. Rc5 Rd6 36. Bd3 Nxd4 37. Nxd4 Rxd4 38. Bxa6 Nd5 39. Rc2 Ke7 40. Kf1 Kf6 41. g3 g6 42. Ke2 g5 43. Rc4 Ke5 44. Bb5 f5 45. Rc8 Kf6 46. Rf8+ Ke7 47. Rg8 Nf6 1/2-1/2

[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.20"]
[Round "4"]
[White "Khorsheva, Alexandra"]
[Black "Efremov, Roman A"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2154"]
[BlackElo "1614"]
[PlyCount "92"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 b6 5. Nc3 Bb7 6. Ne5 Nbd7 7. Qa4 dxc4 8. Nc6 Bxc6 9. Qxc6 Bb4 10. Bxc4 0-0 11. 0-0 a6 12. a3 Bd6 13. h3 b5 14. Bd3 e5 15. Ne4 Nxe4 16. Bxe4 Rb8 17. Qxa6 Nf6 18. Qc6 exd4 19. exd4 Rb6 20. Qc2 Nxe4 21. Qxe4 Re8 22. Qc2 Qh4 23. Be3 Rbb8 24. Qf5 Re6 25. Qg4 Qxg4 26. hxg4 Re4 27. g5 Rbe8 28. b3 Rh4 29. g3 Rhe4 30. Kg2 Ra8 31. a4 bxa4 32. bxa4 Kf8 33. Rfb1 Ree8 34. Rb7 Ra6 35. a5 Rea8 36. Bd2 Ke8 37. Kf3 Kd7 38. d5 Bc5 39. Rc1 Bd6 40. Ke4 Kc8 41. Rcb1 R6a7 42. Rxa7 Rxa7 43. Kd4 Kd7 44. Kc4 c6 45. dxc6+ Kxc6 46. Rb6+ Kd7 1-0

[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.19"]
[Round "3"]
[White "Efremov, Roman A"]
[Black "Simbelov, Roman T"]
[Result "0-1"]
[ECO "C99"]
[WhiteElo "1614"]
[BlackElo "1948"]
[PlyCount "108"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. h3 0-0 9. c3 Na5 10. Bc2 c5 11. d4 cxd4 12. cxd4 Qc7 13. Nbd2 Nc6 14. d5 Nb4 15. Bb1 a5 16. a3 Na6 17. Nf1 Nc5 18. Ng3 Bd7 19. Bc2 b4 20. b3 bxa3 21. Bxa3 Rfb8 22. Rb1 Bd8 23. Qd2 Na6 24. Rec1 Nb4 25. Bd1 Qb7 26. Ne1 Bb6 27. Nc2 Na2 28. Bxd6 Re8 29. Ne3 Nxc1 30. Rxc1 Bd4 31. Bc2 Bxe3 32. Qxe3 Rac8 33. f4 exf4 34. Qxf4 Qb6+ 35. Kh2 Qd4 36. Rd1 Qb2 37. Bb1 Qxb3 38. Rf1 Rc4 39. Nh5 Qb2 40. Nxg7 Ng4+ 41. hxg4 Qxg7 42. g5 a4 43. Rf3 Qg6 44. Bd3 Rc3 45. Be5 Rb3 46. Bd4 a3 47. Qh4 a2 48. Rf6 Qg7 49. Bc4 Rb4 50. Bxa2 Rxd4 51. d6 Rdxe4 52. Qg3 Be6 53. Bb1 Rb4 54. Bc2 Rb5 0-1

[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.19"]
[Round "2"]
[White "Kuznetsov, Ivan Dm"]
[Black "Efremov, Roman A"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "1361"]
[BlackElo "1614"]
[PlyCount "68"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Bf4 d5 4. cxd5 exd5 5. Nf3 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 0-0 8. e3 Bf5 9. Nh4 Bg4 10. Be2 Bxe2 11. Qxe2 Nc6 12. 0-0 Re8 13. Nhf3 Ne4 14. Nxe4 Rxe4 15. Nd2 Re6 16. Qg4 Qd6 17. a3 Rae8 18. Nb3 b6 19. Rac1 Rg6 20. Qf3 Nd8 21. g3 Re4 22. Rc3 Reg4 23. Rfc1 c6 24. Kg2 h5 25. Nd2 h4 26. Nf1 hxg3 27. hxg3 Qe6 28. Nh2 Rh4 29. Kg1 Rh3 30. Kg2 Rf6 31. Qe2 Rfh6 32. Rh1 Qe4+ 33. f3 Qh7 34. Kg1 Rxh2 0-1

[Event "St Petersburg Korchnoi Memorial op"]
[Site "St Petersburg"]
[Date "2023.08.18"]
[Round "1"]
[White "Efremov, Roman A"]
[Black "Shakirov, Marat"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1614"]
[BlackElo "2138"]
[PlyCount "64"]
[EventDate "2023.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "RUS"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 Nf6 4. exd5 cxd5 5. d4 Nc6 6. h3 Bf5 7. Bd3 Bxd3 8. Qxd3 e6 9. Bg5 Bd6 10. 0-0 0-0 11. Rfe1 a6 12. Ne5 Qc7 13. Bxf6 gxf6 14. Ng4 Kg7 15. g3 f5 16. Qd2 f4 17. Ne2 Rg8 18. Kh1 Kh8 19. Nxf4 Bxf4 20. gxf4 Qe7 21. Ne5 Qf6 22. Rg1 Ne7 23. Ng4 Qh4 24. Kh2 Rg7 25. Qe3 Rag8 26. Ne5 Nf5 27. Qd2 Rxg1 28. Rxg1 Rxg1 29. Kxg1 f6 30. Nf7+ Kg8 31. Nd8 Qxh3 32. Qe2 Nxd4 0-1

