[Event "URS"]
[Site "Soviet Union"]
[Date "1989.??.??"]
[Round "?"]
[White "Efimov, Oleg E"]
[Black "Starodubtsev, Igor Aleksandrovich"]
[Result "1-0"]
[ECO "B89"]
[PlyCount "79"]
[EventDate "1989.??.??"]
[EventType "game"]
[EventRounds "9"]
[EventCountry "URS"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Be7 8. Qe2 0-0 9. 0-0-0 Qc7 10. Bb3 a6 11. g4 Nd7 12. Rhg1 Nc5 13. Nf5 b5 14. Bd5 Bb7 15. g5 Rfc8 16. Rg3 b4 17. Rh3 g6 18. Nh6+ Kg7 19. Bxc6 bxc3 20. Qf3 cxb2+ 21. Kb1 Rf8 22. Ng4 h5 23. gxh6+ Kh7 24. Nf6+ Kh8 25. Bd4 e5 26. Nd5 Qd8 27. Bxc5 Bxc6 28. Nxe7 Qxe7 29. Bxd6 Qe6 30. Bxf8 Rxf8 31. Qd3 Rc8 32. Re3 Ba4 33. Rd2 Kh7 34. Qa3 Bb5 35. Rc3 Rb8 36. Qc5 Rb7 37. Qd5 Qe7 38. Qd8 Qxd8 39. Rxd8 Kxh6 40. Rb3 1-0

[Event "URS"]
[Site "Soviet Union"]
[Date "1988.??.??"]
[Round "?"]
[White "Efimov, Oleg E"]
[Black "Feigelson, Josif"]
[Result "1/2-1/2"]
[ECO "C92"]
[PlyCount "125"]
[EventDate "1988.??.??"]
[EventType "game"]
[EventRounds "9"]
[EventCountry "URS"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[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 Re8 10. d4 Bb7 11. a4 h6 12. Nbd2 Bf8 13. Bc2 exd4 14. cxd4 Nb4 15. Bb1 c5 16. d5 Nd7 17. Ra3 c4 18. axb5 axb5 19. Nd4 Qb6 20. Nf5 g6 21. Nf1 Kh7 22. Qd2 Rxa3 23. bxa3 Nd3 24. Bxd3 cxd3 25. Nxh6 Bxd5 26. Qf4 Bg7 27. Be3 Qa5 28. Bd2 Qa4 29. Qxd6 Nf6 30. Ng4 Nxg4 31. Qxd5 Ne5 32. Bb4 Qa7 33. Qxb5 Rd8 34. Nd2 Rc8 35. Bd6 Rc2 36. Rd1 Nc4 37. Bc5 Nxa3 38. Bxa7 Nxb5 39. Be3 Nc3 40. Re1 Ne2+ 41. Kh2 Bc3 42. Rd1 Bd4 43. Nf1 Be5+ 44. g3 Nc3 45. Rxd3 Nxe4 46. Kg2 Kg7 47. Kf3 Nd6 48. Rd5 Nc4 49. Bg5 Bc3 50. Nh2 Nd2+ 51. Ke3 Nb1 52. Kf3 Nd2+ 53. Kg2 Ne4 54. Be3 Be1 55. Ng4 f5 56. Rd7+ Kg8 57. Rd1 fxg4 58. Rxe1 gxh3+ 59. Kf3 Nd2+ 60. Kg4 Ne4 61. f3 Nf2+ 62. Bxf2 Rxf2 63. Kxh3 1/2-1/2

[Event "URS"]
[Site "Soviet Union"]
[Date "1988.??.??"]
[Round "?"]
[White "Moiseev, Viktor"]
[Black "Efimov, Oleg E"]
[Result "1-0"]
[ECO "A70"]
[WhiteElo "2345"]
[PlyCount "77"]
[EventDate "1988.??.??"]
[EventType "game"]
[EventRounds "9"]
[EventCountry "URS"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bf4 a6 8. e4 Bg7 9. Qa4+ Bd7 10. Qb3 b5 11. Bxd6 b4 12. Nd1 Nxe4 13. Qe3 Bf5 14. Bxc5 Qxd5 15. Rc1 Nd7 16. Bxb4 Qb7 17. Ba3 Bf8 18. Bxf8 Kxf8 19. Qd4 Ndf6 20. Be2 Kg7 21. 0-0 Rhd8 22. Qa4 Be6 23. Qa3 a5 24. Bc4 Bxc4 25. Rxc4 Nd2 26. Nxd2 Rxd2 27. b3 Rad8 28. Nc3 Nd5 29. Qxa5 Ra8 30. Qc5 Nxc3 31. Qe5+ Kg8 32. Qxc3 Rdxa2 33. Rc7 Qb6 34. h3 Qe6 35. b4 R2a3 36. Qc5 Ra1 37. Rxa1 Rxa1+ 38. Kh2 Qf6 39. Rc8+ 1-0

[Event "URS"]
[Site "Soviet Union"]
[Date "1987.??.??"]
[Round "?"]
[White "Efimov, Oleg E"]
[Black "Krasin, Oleg"]
[Result "1-0"]
[ECO "B09"]
[PlyCount "66"]
[EventDate "1987.??.??"]
[EventType "game"]
[EventRounds "9"]
[EventCountry "URS"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Nc6 7. 0-0 e5 8. fxe5 dxe5 9. d5 Ne7 10. Nxe5 Nfxd5 11. Nxf7 Nxc3 12. bxc3 Rxf7 13. Rxf7 Kxf7 14. Bc4+ Be6 15. Qf3+ Bf6 16. Bxe6+ Kxe6 17. Ba3 Qh8 18. Rf1 Re8 19. Qg4+ Kf7 20. e5 Nf5 21. Qc4+ Re6 22. exf6 Qd8 23. Re1 Qd7 24. Rxe6 Qxe6 25. Qxc7+ Kxf6 26. Qd8+ Ke5 27. Qb8+ Kf6 28. Qh8+ Kg5 29. Qd8+ Kh5 30. Qd1+ Kh6 31. Bf8+ Kg5 32. Bc5 b6 33. Qd2+ Kf6 1-0

[Event "URS"]
[Site "Soviet Union"]
[Date "1987.??.??"]
[Round "?"]
[White "Efimov, Oleg E"]
[Black "Tsesarsky, Ilya"]
[Result "0-1"]
[ECO "B33"]
[PlyCount "68"]
[EventDate "1987.??.??"]
[EventType "game"]
[EventRounds "9"]
[EventCountry "URS"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 Nf6 6. N1c3 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. c3 Bg7 12. exf5 Bxf5 13. Nc2 Ne7 14. Nce3 Be6 15. Nxe7 Qxe7 16. Be2 0-0 17. Bf3 Rac8 18. 0-0 Rc5 19. a4 f5 20. axb5 e4 21. b4 Rxb5 22. Be2 f4 23. Bxb5 axb5 24. Nc2 Bxc3 25. Ra3 Bb2 26. Ra6 Bc4 27. Qxd6 Qxd6 28. Rxd6 Bxf1 29. Kxf1 Rc8 30. Rd2 Bc1 31. Re2 f3 32. Rxe4 Rxc2 33. Re8+ Kf7 34. Rb8 Bf4 0-1

[Event "Leningrad Cup"]
[Site "Leningrad"]
[Date "1972.??.??"]
[Round "?"]
[White "Efimov, Oleg E"]
[Black "Toprover, Viktor G"]
[Result "1/2-1/2"]
[ECO "A14"]
[PlyCount "45"]
[EventDate "1972.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URS"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. 0-0 0-0 6. b3 c5 7. cxd5 Nxd5 8. Bb2 Bf6 9. Ne5 Nd7 10. f4 Qc7 11. e4 Nb4 12. d4 cxd4 13. Nxd7 Bxd7 14. e5 Be7 15. Nd2 Bc5 16. Ne4 Bb6 17. Qh5 Bb5 18. Nf6+ gxf6 19. exf6 Qc2 20. f5 Kh8 21. Rf4 d3+ 22. Kh1 Bc6 23. Qxh7+ 1/2-1/2

[Event "RSFSR-ch18"]
[Site "Sochi"]
[Date "1958.??.??"]
[Round "?"]
[White "Bastrikov, Georgy Vladimirovic"]
[Black "Efimov, Oleg E"]
[Result "1-0"]
[ECO "B17"]
[PlyCount "67"]
[EventDate "1958.??.??"]
[EventType "tourn"]
[EventRounds "19"]
[EventCountry "URS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 e6 7. Bc4 Be7 8. Qe2 0-0 9. 0-0 c5 10. dxc5 Bxc5 11. Bf4 b6 12. Rad1 Bb7 13. c3 Nd5 14. Bxd5 Bxd5 15. c4 Bc6 16. Ne5 Qc8 17. Nh5 f5 18. b4 Bxb4 19. Nxd7 Bxd7 20. Qb2 e5 21. Bxe5 Be7 22. Bxg7 Rf7 23. Bf6 Bf8 24. Rd3 h6 25. Bh4 f4 26. Nf6+ Rxf6 27. Qxf6 Bf5 28. Rd5 Bh7 29. Rfd1 Qe8 30. Qxf4 Qg6 31. R5d3 Bg7 32. Rg3 Qc2 33. Rxg7+ Kxg7 34. Rd7+ 1-0

[Event "RSFSR-ch18"]
[Site "Sochi"]
[Date "1958.??.??"]
[Round "?"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Efimov, Oleg E"]
[Result "1/2-1/2"]
[ECO "D71"]
[PlyCount "122"]
[EventDate "1958.??.??"]
[EventType "tourn"]
[EventRounds "19"]
[EventCountry "URS"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 Nxc3 7. bxc3 c5 8. e3 0-0 9. Ne2 cxd4 10. cxd4 Qa5+ 11. Qd2 Nc6 12. Rb1 Rd8 13. 0-0 Bg4 14. Nc3 Rac8 15. Rb5 Qa6 16. a4 Ne5 17. Nd5 Rxd5 18. Bxd5 Nf3+ 19. Bxf3 Bxf3 20. e4 Bxe4 21. d5 e6 22. Bb2 Bxb2 23. Rxb2 Bxd5 24. Rb4 Qc6 25. Rd4 Qb6 26. Rd1 Qb3 27. Qf4 a5 28. h4 h5 29. Kh2 Rc3 30. Re1 Rf3 31. Qd2 b5 32. axb5 Qxb5 33. Ra1 Rf5 34. f4 Bb7 35. Rd8+ Kh7 36. Rd7 a4 37. Rc1 Bd5 38. Rcc7 Qf1 39. Rc1 Qf3 40. Rdc7 Qb3 41. R7c3 Qb4 42. R3c2 Qb6 43. Rc5 Be4 44. Rxf5 Bxf5 45. Ra1 Qb3 46. Qc1 Bc2 47. Ra3 Qb4 48. Re3 Bb3 49. Qc3 Qb6 50. f5 gxf5 51. Qf6 Qa7 52. Rd3 Qf2+ 53. Kh3 Qf1+ 54. Kh2 Qe2+ 55. Kg1 Qe1+ 56. Kh2 Qf2+ 57. Kh3 Qf1+ 58. Kh2 e5 59. Rd8 Qe2+ 60. Kh3 Qg4+ 61. Kh2 Qe2+ 1/2-1/2

