[Event "Heusenstamm Schloss op"]
[Site "Heusenstamm"]
[Date "2023.11.26"]
[Round "6"]
[White "Dolzhikova, Kateryna"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2323"]
[BlackElo "2062"]
[PlyCount "60"]
[EventDate "2023.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB48_2023"]
[SourceDate "2023.11.29"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.29"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 e6 5. 0-0 a6 6. Bd3 Nc6 7. Nd5 Bd6 8. Ne3 Bc7 9. Re1 Nge7 10. b3 0-0 11. Bb2 f6 12. h4 Qe8 13. c3 Ne5 14. Bc2 Qh5 15. Nxe5 Qxd1 16. Raxd1 fxe5 17. d4 cxd4 18. cxd4 exd4 19. Bxd4 Ng6 20. h5 Nf4 21. h6 e5 22. hxg7 Rf6 23. Bb2 d6 24. g3 Nh3+ 25. Kg2 Rxf2+ 26. Kh1 Bb6 27. Rc1 Bxe3 28. Rxe3 Bg4 29. Rc3 Kxg7 30. Ba3 Rc8 0-1

[Event "Heusenstamm Schloss op"]
[Site "Heusenstamm"]
[Date "2023.11.26"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Milov, Leonid"]
[Result "0-1"]
[ECO "A81"]
[WhiteElo "2062"]
[BlackElo "2422"]
[PlyCount "96"]
[EventDate "2023.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB48_2023"]
[SourceDate "2023.11.29"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.29"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nf3 g6 5. b3 Bg7 6. Bb2 a5 7. 0-0 a4 8. c4 0-0 9. Qc1 Ne4 10. d5 e5 11. dxe6 axb3 12. Nc3 Nxc3 13. Bxc3 bxa2 14. Bxg7 Kxg7 15. c5 d5 16. Ng5 c6 17. Qf4 Qe7 18. h4 Bxe6 19. Qe5+ Rf6 20. Qb2 Bg8 21. Rxa2 Rxa2 22. Qxa2 Nd7 23. Rb1 Nxc5 24. Qa3 h6 25. Rc1 hxg5 26. hxg5 Re6 27. Rxc5 Qxg5 28. Qb2+ Qf6 29. Qxb7+ Bf7 30. Qa6 g5 31. e3 f4 32. Qa3 fxe3 33. fxe3 Qe5 34. Qc3 Qxc3 35. Rxc3 Kf6 36. Bh3 Rd6 37. Kf2 Ke5 38. Bc8 Rf6+ 39. Ke2 Kd6 40. Rc1 c5 41. Ra1 Ke5 42. Ra5 c4 43. Ra7 Bg6 44. Re7+ Kd6 45. Rg7 c3 46. Ba6 c2 47. Kd2 Rf2+ 48. Kc1 Be4 0-1

[Event "Heusenstamm Schloss op"]
[Site "Heusenstamm"]
[Date "2023.11.25"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Klundt, Klaus"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2062"]
[BlackElo "2280"]
[PlyCount "89"]
[EventDate "2023.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB48_2023"]
[SourceDate "2023.11.29"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Be7 6. Bg2 0-0 7. Qc2 c6 8. 0-0 Nbd7 9. Rd1 b6 10. Bf4 Bb7 11. Ne5 Nh5 12. Be3 f5 13. cxd5 cxd5 14. Nc6 Qe8 15. Nxe7+ Qxe7 16. Nc3 g5 17. Qb3 f4 18. Bd2 Ndf6 19. Nb5 Ba6 20. Rac1 Bxb5 21. Qxb5 Qg7 22. Bb4 Rfe8 23. Bd6 Rac8 24. Be5 Qg6 25. Rc6 Rxc6 26. Qxc6 Ng4 27. Rc1 Nxe5 28. dxe5 g4 29. b4 Rf8 30. Qd7 Qf5 31. Rc8 Qxe5 32. Rxf8+ Kxf8 33. Qxh7 Nf6 34. Qh6+ Kf7 35. Qxf4 Qxe2 36. h3 e5 37. Qf5 e4 38. hxg4 Qd1+ 39. Bf1 Qxg4 40. Qe5 Qf3 41. Bh3 Qd1+ 42. Kh2 Qd2 43. Be6+ Kg7 44. Kg2 d4 45. g4 1-0

[Event "Heusenstamm Schloss op"]
[Site "Heusenstamm"]
[Date "2023.11.25"]
[Round "4"]
[White "Mester, Philipp"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "1806"]
[BlackElo "2062"]
[PlyCount "140"]
[EventDate "2023.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB50_2023"]
[SourceDate "2023.12.13"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Nc6 5. Nc3 Nf6 6. e3 Bf5 7. Qb3 Na5 8. Qa4+ Bd7 9. Qc2 e6 10. Bd3 Rc8 11. Nf3 Nc6 12. a3 Be7 13. h3 a6 14. Qe2 Na5 15. 0-0 Nb3 16. Rad1 b5 17. e4 dxe4 18. Nxe4 Bc6 19. Be5 Qd5 20. Nfg5 Nd7 21. Qh5 g6 22. Qh6 Nxe5 23. Qg7 Nxd4 24. Qxh8+ Kd7 25. Qxh7 Bxg5 26. f3 Be7 27. Qg7 Nxd3 28. Qxf7 Ne2+ 29. Kh1 Kd8 30. Rd2 Be8 31. Qg7 Rc1 32. Rxc1 Nexc1 33. Rc2 e5 34. Nf6 Qf7 35. Nxe8 Qxe8 36. Rc3 a5 37. f4 b4 38. Rc4 Ne2 39. fxe5 Qf8 40. Qxf8+ Bxf8 41. Rc2 Ng3+ 42. Kh2 Ne4 43. axb4 axb4 44. Rc4 Nec5 45. Rg4 Bg7 46. Rxg6 Bxe5+ 47. Kg1 Bxb2 48. Rb6 Kc7 49. Rb5 Kc6 50. Rxb4 Nxb4 51. g4 Kd5 52. Kf2 Ke4 53. Kg3 Be5+ 54. Kh4 Kf4 55. Kh5 Ne6 56. Kg6 Nd5 57. g5 Nxg5 58. h4 Ne7+ 59. Kh5 Nf3 60. Kh6 Nxh4 61. Kh5 Nf3 62. Kh6 Kg4 63. Kh7 Ng5+ 64. Kh6 Ne6 65. Kh7 Bf4 66. Kh8 Kf5 67. Kh7 Kf6 68. Kh8 Kf7 69. Kh7 Nf8+ 70. Kh8 Be5# 0-1

[Event "Heusenstamm Schloss op"]
[Site "Heusenstamm"]
[Date "2023.11.24"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Hinz, Andre"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2062"]
[BlackElo "1690"]
[PlyCount "77"]
[EventDate "2023.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB50_2023"]
[SourceDate "2023.12.13"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 c6 5. e4 d6 6. Nc3 0-0 7. Nf3 Na6 8. h3 Nd7 9. Bg5 Re8 10. 0-0 Nc7 11. Re1 c5 12. d5 a6 13. a4 Rb8 14. a5 b5 15. axb6 Rxb6 16. Qc2 Ne5 17. Nd2 Rb4 18. b3 f5 19. Be3 fxe4 20. Ndxe4 Bf5 21. f4 Nxc4 22. bxc4 Rxc4 23. Qd2 Nb5 24. Rac1 Nd4 25. Qa2 Rb4 26. g4 Bc8 27. Qf2 a5 28. Ng5 Qb6 29. Be4 Bf6 30. Qh4 Bxg5 31. fxg5 Bf5 32. Bxd4 cxd4 33. Kh1 dxc3 34. gxf5 gxf5 35. Qh5 Rf8 36. g6 Kg7 37. Qxh7+ Kf6 38. g7 Rf7 39. Qh6+ 1-0

[Event "Heusenstamm Schloss op"]
[Site "Heusenstamm"]
[Date "2023.11.24"]
[Round "2"]
[White "Poetsch, Hagen"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "B63"]
[WhiteElo "2467"]
[BlackElo "2062"]
[PlyCount "51"]
[EventDate "2023.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB48_2023"]
[SourceDate "2023.11.29"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 Nxd4 9. Qxd4 0-0 10. h4 Qa5 11. Kb1 Bd7 12. Qd2 Kh8 13. Bd3 Rfc8 14. f4 Be8 15. f5 Rc5 16. a3 Rcc8 17. Qe2 b5 18. fxe6 fxe6 19. e5 Bh5 20. g4 Bxg4 21. Qg2 Bxd1 22. exf6 gxf6 23. Qe4 f5 24. Qxe6 Bxg5 25. hxg5 Bg4 26. Qf7 1-0

[Event "Heusenstamm Schloss op"]
[Site "Heusenstamm"]
[Date "2023.11.23"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Blomer, Moritz"]
[Result "1-0"]
[ECO "E17"]
[WhiteElo "2062"]
[BlackElo "1758"]
[PlyCount "91"]
[EventDate "2023.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB48_2023"]
[SourceDate "2023.11.29"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 b6 5. Bg2 Bb7 6. 0-0 Be7 7. Qc2 0-0 8. Rd1 Nbd7 9. cxd5 exd5 10. Nh4 Re8 11. Nc3 Ne4 12. Nf5 Nxc3 13. bxc3 Bf8 14. c4 c6 15. a4 dxc4 16. Qxc4 Qc8 17. e4 Nf6 18. Bh3 Ba6 19. Qc2 Kh8 20. Bg2 Qe6 21. e5 Nd5 22. Ne3 Nxe3 23. Bxe3 Rac8 24. f4 g6 25. Rdc1 Bb7 26. a5 Bb4 27. axb6 axb6 28. Qb2 Qe7 29. Ra7 Ra8 30. Rxb7 Qxb7 31. Qxb4 Rac8 32. Rb1 Qa8 33. Qc4 Qa3 34. Bf2 Kg7 35. Bxc6 Re7 36. d5 Rec7 37. Qb3 Qxb3 38. Rxb3 Rxc6 39. dxc6 Rxc6 40. Rxb6 Rc1+ 41. Kg2 h5 42. h3 Rc4 43. Kf3 Ra4 44. Rb7 Kg8 45. g4 hxg4+ 46. Kxg4 1-0

[Event "Marburg op-A"]
[Site "Marburg"]
[Date "2023.10.29"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Kuhn, Gerhard"]
[Result "1/2-1/2"]
[ECO "D76"]
[WhiteElo "2066"]
[BlackElo "1959"]
[PlyCount "131"]
[EventDate "2023.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. Nf3 0-0 7. 0-0 Nb6 8. Nc3 Nc6 9. e3 e5 10. d5 Na5 11. e4 c6 12. Bg5 f6 13. Be3 cxd5 14. Bxb6 Qxb6 15. Nxd5 Qd8 16. Rc1 Rf7 17. b4 Nc6 18. b5 Nd4 19. Nxd4 exd4 20. Qxd4 f5 21. e5 Be6 22. Rfd1 Rd7 23. f4 Qf8 24. Rc7 Rad8 25. Rxd7 Rxd7 26. Qxa7 Qd8 27. Qd4 Kf7 28. Bf3 Bf8 29. Kg2 Qa5 30. a4 Qd8 31. b6 Qc8 32. Qc3 Qd8 33. Qc4 Kg7 34. Qb5 Bf7 35. a5 Qc8 36. Nc7 Rxd1 37. Bxd1 Qd8 38. Qe2 Bd5+ 39. Nxd5 Qxd5+ 40. Qf3 Qd2+ 41. Be2 Kh6 42. g4 fxg4 43. Qxg4 Bc5 44. e6 Qe3 45. Qh3+ Qxh3+ 46. Kxh3 Kg7 47. Bf3 Bb4 48. a6 bxa6 49. Bd5 Kf6 50. Kg4 a5 51. b7 Bd6 52. h3 h6 53. Kf3 a4 54. Ke4 a3 55. Ba2 Bb8 56. h4 h5 57. Ke3 Bc7 58. Ke4 Bb8 59. Bb3 Bc7 60. Ke3 Bb8 61. Kd3 Bxf4 62. Kc2 Bd6 63. Bc4 Ke7 64. Kb3 Kd8 65. Bd3 Kc7 66. Bxg6 1/2-1/2

[Event "Marburg op-A"]
[Site "Marburg"]
[Date "2023.10.29"]
[Round "6"]
[White "Hubert, Charlotte"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B63"]
[WhiteElo "1850"]
[BlackElo "2066"]
[PlyCount "50"]
[EventDate "2023.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 d6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 Nxd4 9. Qxd4 0-0 10. h4 a6 11. Kb1 b5 12. f3 Qc7 13. Qd2 Rd8 14. Ne2 Bb7 15. g4 Rac8 16. Nd4 e5 17. Nf5 d5 18. exd5 Bxd5 19. Bd3 Bxf3 20. Bxf6 Bxf6 21. g5 Be7 22. Qe3 e4 23. Bxe4 Rxd1+ 24. Rxd1 Bxd1 25. Nxe7+ Qxe7 0-1

[Event "Marburg op-A"]
[Site "Marburg"]
[Date "2023.10.28"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Mader, Fabian"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2066"]
[BlackElo "1873"]
[PlyCount "87"]
[EventDate "2023.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. Qa4 Bg7 6. cxd5 Nxd5 7. Nf3 0-0 8. 0-0 Nb6 9. Qd1 N8d7 10. Nc3 e5 11. Bg5 f6 12. Qb3+ Kh8 13. Be3 e4 14. Nxe4 Nd5 15. Bd2 N7b6 16. Nc5 f5 17. a4 Nf6 18. a5 Nbd5 19. Bg5 Qe7 20. Ne5 Rb8 21. Nxc6 bxc6 22. Qxb8 h6 23. Bxf6 Bxf6 24. e3 Ba6 25. Qb3 Bxf1 26. Rxf1 Qd6 27. Qb7 Rb8 28. Qxa7 Rxb2 29. Qf7 g5 30. Bxd5 cxd5 31. Qg6 f4 32. Qxh6+ Kg8 33. Qg6+ Kh8 34. exf4 gxf4 35. Re1 Rb8 36. Re8+ Rxe8 37. Qxe8+ Kg7 38. Ne6+ Kh6 39. Qf7 Bxd4 40. Nxd4 Qb4 41. Qxf4+ Kh7 42. a6 Qb6 43. Qf5+ Kh8 44. Qc8+ 1-0

[Event "Marburg op-A"]
[Site "Marburg"]
[Date "2023.10.28"]
[Round "4"]
[White "Westendorp, Christian"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D14"]
[WhiteElo "1746"]
[BlackElo "2066"]
[PlyCount "54"]
[EventDate "2023.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Nc6 5. e3 Nf6 6. Nc3 Bf5 7. Bd3 Bxd3 8. Qxd3 e6 9. a3 Be7 10. h3 0-0 11. Nf3 Qb6 12. 0-0 Rfc8 13. b4 Qd8 14. Rfc1 Nh5 15. Bh2 f5 16. Qe2 Nf6 17. Rc2 Nd7 18. Na4 Nb6 19. Nc5 Bxc5 20. dxc5 Qf6 21. Raa2 Nc4 22. Nd4 Nxd4 23. exd4 f4 24. Qg4 Rf8 25. Re2 Rae8 26. Re1 Qxd4 27. Rxe6 Ne5 0-1

[Event "Marburg op-A"]
[Site "Marburg"]
[Date "2023.10.27"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Guertler, Karl Heinz"]
[Result "1/2-1/2"]
[ECO "A54"]
[WhiteElo "2066"]
[BlackElo "1864"]
[PlyCount "112"]
[EventDate "2023.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nd7 3. c4 e5 4. Nc3 c6 5. g3 Ngf6 6. Bg2 Be7 7. 0-0 e4 8. Ng5 d5 9. cxd5 cxd5 10. Qb3 Qb6 11. Bf4 h6 12. Nh3 Qxb3 13. axb3 0-0 14. f3 g5 15. Bd2 Nb6 16. Nf2 exf3 17. exf3 Be6 18. Rfe1 a6 19. Bh3 Bxh3 20. Rxe7 Bd7 21. Nd3 Rfe8 22. Re5 Bc6 23. Kf2 Nbd7 24. Rxe8+ Rxe8 25. Rh1 Kg7 26. g4 Nf8 27. Be3 Ng6 28. Nc1 b5 29. b4 Ra8 30. Nb3 Nd7 31. Na5 Nb8 32. Rc1 Ne7 33. f4 f6 34. f5 Be8 35. Ne2 Nbc6 36. Nxc6 Nxc6 37. Bd2 Kf8 38. Ra1 Ke7 39. Ra3 Kd6 40. Rh3 h5 41. gxh5 Bd7 42. Rf3 Rh8 43. h4 Rxh5 44. hxg5 Rh2+ 45. Kf1 Rxe2 46. Kxe2 Nxd4+ 47. Kf2 Nxf3 48. Kxf3 Bxf5 49. gxf6 Ke6 50. Bc3 Be4+ 51. Kf4 Bc2 52. Bd4 Be4 53. Kg5 Kf7 54. Be5 Bc2 55. Bd4 Be4 56. Kf4 Ke6 1/2-1/2

[Event "Marburg op-A"]
[Site "Marburg"]
[Date "2023.10.27"]
[Round "2"]
[White "Rabiya, Karim"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1765"]
[BlackElo "2066"]
[PlyCount "86"]
[EventDate "2023.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. Re1 Nf6 6. c3 a6 7. Ba4 c4 8. Bc2 Bg4 9. h3 Bh5 10. g4 Bg6 11. Qe2 d5 12. d3 cxd3 13. Qxd3 dxe4 14. Qxd8+ Rxd8 15. Nh4 e3 16. Nxg6 exf2+ 17. Kxf2 hxg6 18. Kg2 e6 19. Nd2 Bd6 20. Ne4 Nxe4 21. Bxe4 0-0 22. Be3 Bc7 23. Rad1 Rxd1 24. Rxd1 Rd8 25. Rxd8+ Bxd8 26. c4 f5 27. Bf3 Kf7 28. a3 Bc7 29. b4 Nd8 30. a4 b6 31. c5 bxc5 32. Bxc5 Ke8 33. a5 Kd7 34. Be2 Kc6 35. Bxa6 Bxa5 36. Be7 Bb6 37. Bc4 Kd7 38. Bxd8 Bxd8 39. Kg3 Ke7 40. Kf4 Kf6 41. g5+ Ke7 42. b5 Kd6 43. Bf1 e5+ 0-1

[Event "Marburg op-A"]
[Site "Marburg"]
[Date "2023.10.26"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Schelhorn, Paul"]
[Result "0-1"]
[ECO "D94"]
[WhiteElo "2066"]
[BlackElo "1807"]
[PlyCount "170"]
[EventDate "2023.10.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 g6 5. Bxc4 Bg7 6. 0-0 0-0 7. Nc3 c5 8. dxc5 Qc7 9. b4 a5 10. Nb5 Qc6 11. Nfd4 Qe4 12. f3 Qe5 13. f4 Qh5 14. Qxh5 Nxh5 15. Nc7 Ra7 16. b5 b6 17. cxb6 Rb7 18. Bd2 Rxb6 19. Bxa5 Rd6 20. Rad1 Nxf4 21. exf4 Bxd4+ 22. Kh1 Bg4 23. Rde1 Bc5 24. h3 Bf5 25. Nd5 Rd7 26. Rc1 Be4 27. Nc3 Ba8 28. Ne2 Be3 29. Rcd1 Ra7 30. Bb4 Nd7 31. Rd3 Bb6 32. a3 Nf6 33. Ng3 Rc8 34. Bb3 h5 35. f5 g5 36. Ra1 h4 37. Ne2 Ne4 38. Be1 Bf2 39. Kh2 Bc5 40. a4 Bd6+ 41. Kh1 Nc5 42. Rc1 Rac7 43. Rxd6 exd6 44. Ba5 Re7 45. Nd4 Rce8 46. Bc2 Ne4 47. Nc6 Ng3+ 48. Kh2 Re2 49. Bd3 Ra2 50. Bb4 Ne2 51. Re1 Re3 52. Bc4 Rc2 53. Bxe2 Rexe2 54. Rxe2 Rxe2 55. Bxd6 f6 56. Kg1 Rc2 57. Kf1 Bxc6 58. bxc6 Rxc6 59. Be7 Ra6 60. g4 Kf7 61. Bc5 Rxa4 62. Kg2 Rc4 63. Bf2 Rc3 64. Be1 Rb3 65. Bf2 Ke7 66. Bc5+ Kd7 67. Bd4 Ke7 68. Bc5+ Kf7 69. Bf2 Ra3 70. Be1 Ke8 71. Bf2 Kd7 72. Bd4 Ra6 73. Kf3 Rd6 74. Ke4 Rxd4+ 75. Kxd4 Kd6 76. Kc4 Ke5 77. Kc5 Kf4 78. Kd6 Kg3 79. Ke6 Kxh3 80. Kxf6 Kxg4 81. Ke6 h3 82. f6 h2 83. f7 h1Q 84. f8Q Qe4+ 85. Kd7 Qf5+ 0-1

[Event "Rhein Main op-A 25th"]
[Site "Bad Homburg"]
[Date "2023.06.11"]
[Round "7"]
[White "Mueller, Christian"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2219"]
[BlackElo "2123"]
[PlyCount "23"]
[EventDate "2023.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3 c4 7. Bc2 d6 8. exd6 Qxd6 9. 0-0 Bg4 10. h3 Bh5 11. Re1 e6 12. Na3 1/2-1/2

[Event "Rhein Main op-A 25th"]
[Site "Bad Homburg"]
[Date "2023.06.10"]
[Round "6"]
[White "Erdmann, Stefan"]
[Black "Harringer, Manfred"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2123"]
[BlackElo "2005"]
[PlyCount "77"]
[EventDate "2023.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 a6 8. a4 Bd7 9. Nbd2 Bc6 10. Nxc4 Be4 11. Qd1 c5 12. dxc5 Bxc5 13. Be3 Bxe3 14. Nxe3 Nc6 15. Qb3 Qe7 16. Rfd1 Rfd8 17. Rac1 Qb4 18. Rxd8+ Rxd8 19. Qxb4 Nxb4 20. Ne5 Bxg2 21. Kxg2 Ne8 22. Rc4 a5 23. Rc5 Ra8 24. N3c4 f6 25. Nb6 Ra6 26. Nec4 Nc6 27. Rb5 Nc7 28. Rb3 Nb4 29. e4 Nc6 30. Rd3 Na8 31. Nc8 Ne5 32. Rd8+ Kf7 33. N4d6+ Kg6 34. Ne7+ Kh5 35. h3 g5 36. Ne8 Nf7 37. Nxf6+ Kh6 38. Ng4+ Kh5 39. Rf8 1-0

[Event "Rhein Main op-A 25th"]
[Site "Bad Homburg"]
[Date "2023.06.10"]
[Round "5"]
[White "Hagner, Bennet"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2331"]
[BlackElo "2123"]
[PlyCount "117"]
[EventDate "2023.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c6 3. Nf3 d5 4. e3 g6 5. Nc3 Bg7 6. Be2 0-0 7. 0-0 Bg4 8. cxd5 Nxd5 9. h3 Nxc3 10. bxc3 Bf5 11. Qb3 Qb6 12. Nd2 e5 13. Nc4 Qxb3 14. axb3 Nd7 15. Ba3 Rfb8 16. Bd6 Re8 17. Ra2 exd4 18. cxd4 Nb6 19. Na5 Nd5 20. Rc1 c5 21. Bf3 Nb4 22. Rd2 Nd3 23. Rcd1 cxd4 24. e4 Bxe4 25. Bxe4 Nxf2 26. Bxb7 Nxd1 27. Rxd1 Rad8 28. Bc7 Rd7 29. Bc6 Rxc7 30. Bxe8 Kf8 31. Ba4 f5 32. Nc6 Rd7 33. Kf2 a6 34. Ke2 Rd6 35. Kd3 Re6 36. Rd2 Re3+ 37. Kc4 Rc3+ 38. Kd5 Kf7 39. Nxd4 Bf8 40. Nc6 Rc5+ 41. Kd4 Rc1 42. Nb8 Rc8 43. Nxa6 Bg7+ 44. Kd3 Rc3+ 45. Ke2 g5 46. Nb4 g4 47. Nd5 Rc1 48. Ne3 gxh3 49. gxh3 Bh6 50. Rd1 Rxd1 51. Nxd1 Kg6 52. Ne3 Bf8 53. Kf3 Kg5 54. Bd7 f4 55. Nd5 Bd6 56. b4 h5 57. b5 Kh4 58. b6 Be5 59. b7 1-0

[Event "Rhein Main op-A 25th"]
[Site "Bad Homburg"]
[Date "2023.06.09"]
[Round "4"]
[White "Marschner, Thomas"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "1933"]
[BlackElo "2123"]
[PlyCount "110"]
[EventDate "2023.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 g6 5. Nxd4 cxd4 6. Ne2 Bg7 7. 0-0 e6 8. c3 dxc3 9. dxc3 Qb6 10. a4 Ne7 11. Be3 Qc7 12. Qd2 a6 13. Bd3 b6 14. Bh6 0-0 15. Bxg7 Kxg7 16. h4 d5 17. h5 dxe4 18. Bxe4 Bb7 19. Bxb7 Rad8 20. Qf4 Qxb7 21. Rfd1 Rd5 22. Rxd5 Qxd5 23. hxg6 Nxg6 24. Qd4+ Qxd4 25. Nxd4 e5 26. Nf5+ Kf6 27. Ne3 Rd8 28. Rd1 Rxd1+ 29. Nxd1 Ke6 30. Kf1 h5 31. Ke2 Nf4+ 32. Kf3 f5 33. g3 Nd3 34. b4 a5 35. Ke3 e4 36. f3 Kd5 37. fxe4+ fxe4 38. bxa5 bxa5 39. c4+ Ke5 40. Nc3 Nc5 41. Ne2 Nxa4 42. Nd4 Nc5 43. Nc6+ Kf5 44. Nxa5 Kg4 45. Nc6 Kxg3 46. Nd4 h4 47. Ne2+ Kg4 48. Kf2 Nd3+ 49. Kg1 e3 50. Nd4 Ne5 51. Ne2 Nxc4 52. Kg2 Ne5 53. Ng1 Ng6 54. Kf1 Nf4 55. Ke1 h3 0-1

[Event "Rhein Main op-A 25th"]
[Site "Bad Homburg"]
[Date "2023.06.08"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Rubsamen, Cornelius"]
[Result "0-1"]
[ECO "A64"]
[WhiteElo "2123"]
[BlackElo "2183"]
[PlyCount "58"]
[EventDate "2023.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nc3 d6 6. Nf3 c5 7. d5 e6 8. 0-0 Re8 9. Nd2 exd5 10. cxd5 Nbd7 11. a4 a6 12. Nc4 Ne5 13. Na3 Nh5 14. h3 f5 15. e3 Bd7 16. Ne2 b5 17. axb5 axb5 18. Rb1 b4 19. Nc2 Bb5 20. b3 Ra2 21. Bb2 Qe7 22. Kh1 Nd3 23. Bxg7 Qxg7 24. Ne1 Nxf2+ 25. Rxf2 Rxe2 26. Rxe2 Nxg3+ 27. Kh2 Nxe2 28. Ra1 Qe5+ 29. Kh1 Ng3+ 0-1

[Event "Rhein Main op-A 25th"]
[Site "Bad Homburg"]
[Date "2023.06.08"]
[Round "2"]
[White "Kulenovic, Adnan"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1938"]
[BlackElo "2123"]
[PlyCount "60"]
[EventDate "2023.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e3 Nf6 2. g3 d5 3. Bg2 g6 4. b3 Bg7 5. Bb2 0-0 6. f4 c5 7. Nf3 Nc6 8. 0-0 d4 9. exd4 cxd4 10. Na3 Bg4 11. h3 Be6 12. Qe2 Qd7 13. Kh2 d3 14. cxd3 Ng4+ 15. hxg4 Bxb2 16. Nc4 Bxa1 17. Rxa1 Bxg4 18. Ne3 Nd4 19. Qf2 Bxf3 20. Bxf3 Nxf3+ 21. Qxf3 Qxd3 22. Rg1 Qxd2+ 23. Rg2 Qd3 24. Qf2 Rac8 25. g4 Rc3 26. Rg3 Rd8 27. Kh3 Qd2 28. Qg1 Rdd3 29. Nf1 Rxg3+ 30. Nxg3 Qxf4 0-1

[Event "Rhein Main op-A 25th"]
[Site "Bad Homburg"]
[Date "2023.06.07"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Kutzner, Joachim"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2123"]
[BlackElo "1875"]
[PlyCount "75"]
[EventDate "2023.06.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. Nc3 Nc6 6. Nf3 Bg4 7. h3 Bxf3 8. Bxf3 Nd7 9. e3 e5 10. d5 Ne7 11. e4 0-0 12. h4 f5 13. Be3 f4 14. Bd2 c6 15. g4 g5 16. hxg5 Rf7 17. Qe2 a6 18. 0-0-0 Bf8 19. Rh5 Ng6 20. dxc6 bxc6 21. Na4 Nb6 22. Ba5 Nxa4 23. Bxd8 Rxd8 24. Qc2 Nc5 25. Rdh1 a5 26. Qc3 Ra8 27. Kb1 Rb7 28. Bd1 Rab8 29. f3 Ra7 30. R1h2 Rbb7 31. Bc2 Rb8 32. Qd2 Rbb7 33. Qd1 Ne6 34. Ba4 Nd4 35. Bxc6 Rc7 36. Bd5+ Kh8 37. Rd2 Bg7 38. Rxh7+ 1-0

[Event "Norway Chess op"]
[Site "Stavanger"]
[Date "2023.06.01"]
[Round "8"]
[White "Erdmann, Stefan"]
[Black "Juknis, Paulius"]
[Result "0-1"]
[ECO "E64"]
[WhiteElo "2123"]
[BlackElo "2115"]
[PlyCount "101"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "NOR"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. Nf3 0-0 6. Nc3 c5 7. d5 e6 8. 0-0 Re8 9. e4 exd5 10. exd5 h6 11. Re1 Rxe1+ 12. Qxe1 Nbd7 13. Bf4 Nb6 14. b3 g5 15. Bd2 Bf5 16. Rc1 Nbd7 17. h4 g4 18. Nh2 Ne5 19. Bf1 Qd7 20. Be3 Bg6 21. Qd2 Kh7 22. Be2 a6 23. Re1 Re8 24. a4 Qf5 25. Rc1 h5 26. Bf4 Ng8 27. Nd1 Nh6 28. Ne3 Qd7 29. a5 Be4 30. Bxe5 Bxe5 31. Bd3 Bg6 32. Bxg6+ fxg6 33. b4 cxb4 34. c5 Bc3 35. Rxc3 bxc3 36. Qxc3 Rc8 37. c6 bxc6 38. dxc6 Rxc6 39. Qd3 Nf5 40. Nhf1 Qe6 41. Nxf5 Qxf5 42. Qd4 Qxa5 43. Ne3 Qe1+ 44. Nf1 Rc1 45. Qa7+ Kh6 46. Qxa6 Qxf1+ 47. Qxf1 Rxf1+ 48. Kxf1 Kg7 49. f3 gxf3 50. Kf2 Kf6 51. Kxf3 0-1

[Event "Norway Chess op"]
[Site "Stavanger"]
[Date "2023.05.31"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Catona, Dan"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2123"]
[BlackElo "1800"]
[PlyCount "55"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "NOR"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nf3 c5 4. d5 d6 5. g3 b5 6. cxb5 a6 7. bxa6 Nxa6 8. Nc3 Nb4 9. Bd2 Bf5 10. e4 Bg4 11. Bb5+ Kf8 12. 0-0 Qb6 13. Kg2 Bxf3+ 14. Qxf3 Nc2 15. Rab1 Nd4 16. Qd3 Nxb5 17. Nxb5 Rxa2 18. b4 Bh6 19. Bc3 Nf6 20. bxc5 Qxc5 21. Qf3 Kg7 22. Bd4 Qc2 23. Nxd6 Ra4 24. Bxf6+ exf6 25. e5 f5 26. Rbe1 Rf8 27. e6 Ra6 28. Nxf7 1-0

[Event "Norway Chess op"]
[Site "Stavanger"]
[Date "2023.05.30"]
[Round "6"]
[White "Omtvedt, Aleksander"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "D14"]
[WhiteElo "1896"]
[BlackElo "2123"]
[PlyCount "128"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "NOR"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Bf5 7. Qb3 Na5 8. Qa4+ Bd7 9. Qc2 e6 10. h3 Rc8 11. Nd2 b5 12. a3 b4 13. axb4 Bxb4 14. e3 Qb6 15. Bd3 a6 16. 0-0 0-0 17. Rfc1 Bb5 18. Qb1 Nc4 19. Nxc4 Bxc4 20. Bc2 a5 21. f3 g6 22. Ba4 Nh5 23. Bh2 f6 24. Qc2 Rf7 25. Qf2 Bf8 26. g4 Ng7 27. e4 Rb7 28. b3 Ba6 29. exd5 Bb4 30. Bc6 Ra7 31. Ne4 Be7 32. Nc5 Kh8 33. Qe3 exd5 34. Bxd5 Rd8 35. Be4 Bd6 36. Bxd6 Qxd6 37. Kg2 f5 38. Bd3 Re7 39. Qf2 Bxd3 40. Nxd3 Ne6 41. Re1 fxg4 42. hxg4 Qxd4 43. Qxd4+ Rxd4 44. Nc5 Nf4+ 45. Kf1 Rf7 46. Rxa5 Kg7 47. Ra2 h5 48. g5 Rd5 49. b4 Rxg5 50. Re4 Kh6 51. Rb2 Nh3 52. Rb3 Rgf5 53. Kg2 Nf4+ 54. Kg3 Rg5+ 55. Kf2 Rgf5 56. Ne6 Nd5 57. b5 Nb6 58. Nd4 R5f6 59. Nc6 g5 60. Ne5 Rf8 61. Kg2 Ra8 62. Rb2 Raf8 63. Rb3 Ra8 64. Rb2 Raf8 1/2-1/2

[Event "Norway Chess op"]
[Site "Stavanger"]
[Date "2023.05.29"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Oupindrin, Narayanin"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2123"]
[BlackElo "1918"]
[PlyCount "47"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "NOR"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 dxc4 5. Bg2 c5 6. 0-0 Nc6 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. Nbd2 c3 10. bxc3 Bd7 11. Nb3 Be7 12. c4 0-0 13. Bb2 Rfd8 14. Ne5 Be8 15. Nd3 Nd7 16. Rac1 Rac8 17. e3 f6 18. Nd4 Nxd4 19. exd4 b6 20. Bh3 f5 21. Re1 Bg5 22. f4 Bf6 23. Ne5 Nxe5 24. dxe5 1/2-1/2

[Event "Norway Chess op"]
[Site "Stavanger"]
[Date "2023.05.29"]
[Round "4"]
[White "Skytte, Robert"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B57"]
[WhiteElo "1683"]
[BlackElo "2123"]
[PlyCount "88"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "NOR"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 7. Nb3 e6 8. Bf4 Ne5 9. Be2 a6 10. Be3 Qc7 11. f4 Nc4 12. Bxc4 Qxc4 13. Qf3 e5 14. f5 b5 15. 0-0-0 Qc7 16. g4 b4 17. Nd5 Nxd5 18. exd5 Bb7 19. Rhe1 Rc8 20. Re2 a5 21. Bf4 Ba6 22. Bg5 h6 23. Bh4 a4 24. Nd4 Bxe2 25. Qxe2 Qc4 26. Rd3 Be7 27. Bxe7 Kxe7 28. Nc6+ Rxc6 29. dxc6 Qxc6 30. Rd4 Rb8 31. Rc4 Qb6 32. Re4 Rc8 33. h4 f6 34. Re3 b3 35. axb3 axb3 36. c3 d5 37. g5 hxg5 38. hxg5 Qa7 39. Rxe5+ fxe5 40. Qxe5+ Kf8 41. Qe6 Qa1+ 42. Kd2 Qxb2+ 43. Kd1 Qc2+ 44. Ke1 Qe4+ 0-1

[Event "Norway Chess op"]
[Site "Stavanger"]
[Date "2023.05.27"]
[Round "1"]
[White "Stremavicius, Titas"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "2541"]
[BlackElo "2123"]
[PlyCount "41"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "NOR"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. g3 c6 4. Bg2 Bg4 5. c4 e6 6. 0-0 Nbd7 7. h3 Bh5 8. cxd5 exd5 9. Qb3 Nb6 10. a4 a5 11. Ne5 Be7 12. Nc3 Nfd7 13. Nxd7 Nxd7 14. Qxb7 Rc8 15. e4 dxe4 16. Bxe4 0-0 17. Bxc6 Nb6 18. Nb5 Bb4 19. Bf4 Nc4 20. Na7 Rxc6 21. Nxc6 1-0

[Event "Frankfurt-chA"]
[Site "Frankfurt"]
[Date "2022.06.13"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Bittner, Peter"]
[Result "1-0"]
[ECO "E00"]
[WhiteElo "2200"]
[BlackElo "1852"]
[PlyCount "103"]
[EventDate "2022.04.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 g6 4. Bg2 Bg7 5. Nc3 0-0 6. e4 d6 7. Nge2 e5 8. h3 Nbd7 9. Be3 b6 10. Qc2 Bb7 11. 0-0 Qe7 12. Rfe1 a6 13. Nd5 Nxd5 14. cxd5 Rac8 15. dxe5 dxe5 16. Nc3 c5 17. h4 Qd6 18. Bh3 Rc7 19. Rad1 Bc8 20. Bg5 Nb8 21. Bg2 h6 22. Be3 Kh7 23. Rd2 Bd7 24. Qd1 b5 25. f4 b4 26. Ne2 f6 27. Rf1 Bb5 28. Bh3 Bd7 29. g4 Bc8 30. Ng3 Rcf7 31. Rdf2 exf4 32. Bxf4 Qb6 33. Kh2 a5 34. Bxb8 Qxb8 35. d6 Ba6 36. Re1 Rd7 37. Rd2 Rfd8 38. e5 fxe5 39. Ne4 Qa7 40. g5 Rf7 41. h5 Rf4 42. hxg6+ Kxg6 43. Rg2 h5 44. Ng3 Rh4 45. Re4 Rxh3+ 46. Kxh3 Qd7+ 47. Kh2 Rh8 48. Rh4 Bb7 49. Rf2 e4 50. Rxh5 Qd8 51. Qg4 Bc8 52. Qxe4+ 1-0

[Event "Frankfurt-chA"]
[Site "Frankfurt"]
[Date "2022.05.30"]
[Round "6"]
[White "Rondonuwu, Grover"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2047"]
[BlackElo "2200"]
[PlyCount "88"]
[EventDate "2022.04.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 h6 3. Bh4 c6 4. Nf3 Qb6 5. b3 Bf5 6. e3 Nd7 7. Bd3 e6 8. 0-0 Ne7 9. Bxe7 Bxe7 10. Bxf5 exf5 11. Qd3 g6 12. c4 Qa6 13. Rd1 dxc4 14. bxc4 0-0 15. Nc3 Rad8 16. Rab1 Bf6 17. Rb4 b6 18. Qb1 Rfe8 19. Ra4 Qb7 20. c5 Nxc5 21. dxc5 Bxc3 22. Nd4 b5 23. h3 Rd7 24. Ra3 b4 25. Rb3 a5 26. a3 Red8 27. axb4 axb4 28. Rd3 Qa6 29. Rdxc3 bxc3 30. Rxc3 f4 31. Qc1 fxe3 32. fxe3 Qc8 33. Rb3 Qc7 34. Rb6 Qg3 35. Rxc6 Re7 36. Nc2 Re5 37. Rd6 Rxd6 38. cxd6 Rd5 39. Nd4 Rxd6 40. Nf3 Kh7 41. e4 Rd3 42. Qf1 Re3 43. Ng5+ Qxg5 44. Qxf7+ Kh8 1/2-1/2

[Event "Frankfurt-chA"]
[Site "Frankfurt"]
[Date "2022.05.23"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Sydykov, Bayastan"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "2200"]
[BlackElo "1477"]
[PlyCount "99"]
[EventDate "2022.04.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 Bf5 4. Nc3 e6 5. Bg5 Be7 6. e3 Nbd7 7. Qb3 Rb8 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Rc1 c6 11. Be2 Bg6 12. 0-0 0-0 13. a3 f5 14. Rfe1 Kh8 15. Ne5 Nxe5 16. dxe5 f4 17. Nxd5 exd5 18. exf4 Rxf4 19. Bd3 Bxd3 20. Qxd3 a6 21. Re3 Qe6 22. g3 Rf5 23. Rce1 c5 24. Qc2 b6 25. Qa4 d4 26. Re4 b5 27. Qa5 c4 28. Rxd4 Re8 29. Qc7 h6 30. Rd6 Qg8 31. Rxa6 Qd5 32. Ra7 Rg8 33. Qd6 Qf3 34. Qd2 Re8 35. e6 Rd5 36. Qe2 Qf6 37. Rf7 Qg6 38. Kg2 Rd6 39. Qf3 Rdxe6 40. Rxe6 Qxe6 41. g4 Qe5 42. Rf8+ Rxf8 43. Qxf8+ Kh7 44. Qf5+ Qxf5 45. gxf5 Kg8 46. Kf3 Kf7 47. Ke4 Ke7 48. Kd5 Kf6 49. Kc5 Kxf5 50. Kxb5 1-0

[Event "Frankfurt-chA"]
[Site "Frankfurt"]
[Date "2022.05.16"]
[Round "4"]
[White "Lopez Fuertes, Victor"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B22"]
[BlackElo "2200"]
[PlyCount "86"]
[EventDate "2022.04.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 b6 7. Bd2 Be7 8. Nc3 Nxc3 9. Bxc3 0-0 10. Bd3 f5 11. exf6 gxf6 12. Be4 d5 13. Bc2 Rf7 14. Qd2 Nd7 15. 0-0 Nf8 16. Bb4 Bxb4 17. Qxb4 Rg7 18. Rfe1 a5 19. Qd2 Qd6 20. Kh1 Bd7 21. Rac1 Ng6 22. Bxg6 hxg6 23. g3 g5 24. Qc3 Be8 25. a3 Rh7 26. Kg2 Rd8 27. Qe3 Bf7 28. Rc3 Qf8 29. Rc7 Qd6 30. Rec1 Be8 31. Rxh7 Kxh7 32. Rc3 Bg6 33. Qc1 Be4 34. Kg1 Kg6 35. Nd2 Bf5 36. f3 g4 37. f4 b5 38. Rc6 Qb8 39. Nb3 b4 40. a4 Qa7 41. Rc5 Qh7 42. Nd2 Rh8 43. Rc8 Qxh2+ 0-1

[Event "Frankfurt-chA"]
[Site "Frankfurt"]
[Date "2022.05.09"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Raumanns, Niklas"]
[Result "0-1"]
[ECO "A52"]
[WhiteElo "2200"]
[BlackElo "1756"]
[PlyCount "100"]
[EventDate "2022.04.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Nc6 6. Nc3 0-0 7. Be2 Re8 8. a3 a5 9. b3 Ngxe5 10. Bb2 Nxf3+ 11. Bxf3 Ne5 12. Ne4 Nxf3+ 13. gxf3 Bf8 14. Rg1 Ra6 15. Qd2 Rxe4 16. fxe4 Qh4 17. Qd4 Rg6 18. Rxg6 hxg6 19. Qe5 d6 20. Qf4 Qh5 21. a4 d5 22. Ba3 Bxa3 23. Rxa3 dxc4 24. bxc4 Qc5 25. Rd3 Qb4+ 26. Ke2 Qxc4 27. e5 Be6 28. Kd2 Qa2+ 29. Ke1 g5 30. Rd8+ Kh7 31. Qxg5 Qb1+ 32. Rd1 Qb4+ 33. Kf1 Qc4+ 34. Kg1 Qe2 35. Rd4 Kg8 36. Qd8+ Kh7 37. Qh4+ Kg6 38. Qg3+ Kh7 39. Qh4+ Kg6 40. Qg3+ Kh7 41. Kg2 c5 42. Rh4+ Kg8 43. e4 c4 44. Qg5 Qd1 45. Qe7 Qd7 46. Qc5 Qc6 47. Qxc6 bxc6 48. Kf1 c3 49. Ke2 g5 50. Rh5 Bg4+ 0-1

[Event "Frankfurt-chA"]
[Site "Frankfurt"]
[Date "2022.05.02"]
[Round "2"]
[White "Ngo, Quang Thai"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "1622"]
[BlackElo "2200"]
[PlyCount "97"]
[EventDate "2022.04.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 a6 5. Nf3 b5 6. b3 Bg4 7. a4 b4 8. Ne2 Bxf3 9. gxf3 a5 10. Bg2 g6 11. Qd3 Bg7 12. e4 0-0 13. h4 Nbd7 14. e5 dxc4 15. Qxc4 Nd5 16. h5 e6 17. hxg6 hxg6 18. Qxc6 Nxe5 19. dxe5 Bxe5 20. Rb1 Bc3+ 21. Nxc3 Nxc3 22. Bb2 Qf6 23. Bxc3 bxc3 24. Qe4 c2 25. Qxc2 Rfc8 26. Qb2 e5 27. 0-0 Kg7 28. Rfe1 Rc5 29. f4 Re8 30. Re4 Qf5 31. fxe5 Re6 32. Rbe1 Rc8 33. Qd2 g5 34. Qd3 Rh8 35. Qf3 Qh7 36. Qg3 Qf5 37. Rg4 Rh5 38. Be4 Qxe5 39. Qxe5+ Rxe5 40. f4 Rxe4 41. Rxe4 f5 42. Re5 fxg4 43. Rxa5 Rh3 44. Rxg5+ Kf6 45. Rb5 Rf3 46. a5 Rxf4 47. a6 Rd4 48. b4 Ke7 49. a7 1-0

[Event "Frankfurt-chA"]
[Site "Frankfurt"]
[Date "2022.04.25"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Schaedlich, Dennis"]
[Result "1-0"]
[ECO "A64"]
[WhiteElo "2200"]
[PlyCount "69"]
[EventDate "2022.04.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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 Bg7 4. Nf3 d6 5. g3 0-0 6. Bg2 c5 7. d5 e6 8. 0-0 exd5 9. cxd5 a6 10. a4 Re8 11. Nd2 Nbd7 12. h3 Rb8 13. Nc4 Ne5 14. Na3 h6 15. f4 Ned7 16. e4 Nh7 17. Nc4 Qc7 18. e5 dxe5 19. d6 Qd8 20. Nd5 exf4 21. Ne7+ Kh8 22. Bxf4 Rf8 23. h4 Nhf6 24. Qd2 Kh7 25. Bf3 Nb6 26. Ne5 Be6 27. Rfe1 Bd7 28. Qc2 Bxa4 29. Rxa4 Nxa4 30. N5xg6 fxg6 31. Qxg6+ Kh8 32. Bxh6 Rg8 33. Bxg7+ Rxg7 34. Qxf6 Nb6 35. Re5 1-0

[Event "Karlsruhe Grenke op"]
[Site "Karlsruhe"]
[Date "2019.04.19"]
[Round "3"]
[White "Thinius, Marco"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2406"]
[BlackElo "2199"]
[PlyCount "108"]
[EventDate "2019.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nc3 e6 6. d4 cxd4 7. Nb5 d5 8. cxd5 Qa5+ 9. Nd2 Qxb5 10. a4 Qb4 11. dxc6 Ne7 12. b3 bxc6 13. Ba3 Qb7 14. 0-0 0-0 15. Nc4 Qc7 16. Rc1 Re8 17. Bd6 Qd8 18. Be5 Bxe5 19. Nxe5 Bb7 20. Qd2 f6 21. Nxc6 Nxc6 22. Bxc6 Re7 23. b4 Kg7 24. b5 Qd6 25. Bxb7 Rxb7 26. Rc6 Qd5 27. Rfc1 Rd8 28. R1c5 Qe4 29. f3 Qb1+ 30. Rc1 Qb3 31. Rc7+ Rd7 32. Rxb7 Rxb7 33. Qxd4 e5 34. Qe4 Rd7 35. Kf2 Qb2 36. Rc2 Qa1 37. Kg2 Qe1 38. h4 h5 39. Rc8 Rf7 40. Qc4 Qa5 41. Kf1 Qb6 42. Qc6 Qxc6 43. Rxc6 Rd7 44. e4 Kf7 45. Ke2 Ke7 46. Ke3 g5 47. a5 gxh4 48. gxh4 Rd1 49. Rc7+ Kd6 50. Rxa7 Rb1 51. Rb7 Rb3+ 52. Kf2 Kc5 53. a6 f5 54. exf5 Kd5 1-0

[Event "Heusenstamm Sparkassen op-A 5th"]
[Site "Heusenstamm"]
[Date "2018.11.25"]
[Round "6"]
[White "Erdmann, Stefan"]
[Black "Scharrer, Udo"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2216"]
[BlackElo "2014"]
[PlyCount "95"]
[EventDate "2018.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. g3 d6 6. Bg2 Nc6 7. 0-0 a6 8. Qd3 e5 9. dxe5 Nxe5 10. Nxe5 dxe5 11. Qxd8 Rxd8 12. Bg5 Re8 13. Nd5 Nxd5 14. cxd5 f6 15. Bd2 Bf8 16. Rac1 Bd6 17. e4 f5 18. f3 Bd7 19. Rfe1 c6 20. dxc6 Bxc6 21. Ba5 fxe4 22. fxe4 Re7 23. Bh3 Rae8 24. Bf1 Bc7 25. Bb4 Bb6+ 26. Bc5 Bxc5+ 27. Rxc5 Rd8 28. Bc4+ Kg7 29. Bd5 Bxd5 30. exd5 Rd6 31. Kf2 b6 32. Rc6 Rxc6 33. dxc6 Kf6 34. Rc1 Rc7 35. Ke3 Ke6 36. Ke4 a5 37. g4 Kd6 38. g5 b5 39. Rf1 Rxc6 40. Rf6+ Kc5 41. Rxc6+ Kxc6 42. Kxe5 Kc5 43. Kf6 a4 44. Kg7 Kb4 45. Kxh7 a3 46. bxa3+ Kxa3 47. Kxg6 Kxa2 48. Kf6 1-0

[Event "Heusenstamm Sparkassen op-A 5th"]
[Site "Heusenstamm"]
[Date "2018.11.25"]
[Round "7"]
[White "Teichert, Felix"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "1980"]
[BlackElo "2216"]
[PlyCount "65"]
[EventDate "2018.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. b3 Nf6 2. Bb2 d5 3. e3 c5 4. Nf3 g6 5. d4 Bg7 6. Nbd2 0-0 7. Bd3 Nc6 8. 0-0 cxd4 9. exd4 Nb4 10. Ne5 Nxd3 11. Nxd3 Bg4 12. Qe1 Rc8 13. c3 Nd7 14. h3 Bf5 15. Qe3 Re8 16. c4 dxc4 17. Nxc4 b5 18. Nce5 Nxe5 19. Nxe5 Qd5 20. Rac1 Red8 21. Rxc8 Rxc8 22. Rc1 Qb7 23. Rxc8+ Qxc8 24. Qc3 Qxc3 25. Bxc3 Be4 26. Bb4 Kf8 27. Bc5 a6 28. f3 Bd5 29. Kf2 Ke8 30. Ke3 Bh6+ 31. Ke2 f6 32. Nd3 Kd7 33. Bb4 1/2-1/2

[Event "Heusenstamm Sparkassen op-A 5th"]
[Site "Heusenstamm"]
[Date "2018.11.24"]
[Round "5"]
[White "Begri, Felix"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D17"]
[WhiteElo "2008"]
[BlackElo "2216"]
[PlyCount "72"]
[EventDate "2018.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Qc7 8. g3 e5 9. dxe5 Nxe5 10. Bf4 Nfd7 11. Bg2 g5 12. Bxe5 Nxe5 13. Qd4 f6 14. 0-0 Be6 15. Nxe5 Qxe5 16. Qxe5 fxe5 17. Ne4 Be7 18. b4 Bxb4 19. a5 Be7 20. a6 b6 21. Nxg5 Bxg5 22. Bxc6+ Kf7 23. Bxa8 Rxa8 24. e3 Be7 25. f4 Bc5 26. fxe5+ Ke7 27. Rfe1 Rd8 28. Ra4 Bf5 29. g4 Bg6 30. h4 Ke6 31. h5 Bc2 32. Rf4 Rd7 33. Re2 Bd3 34. Re1 Kxe5 35. Kg2 Be4+ 36. Kh3 b5 0-1

[Event "Heusenstamm Sparkassen op-A 5th"]
[Site "Heusenstamm"]
[Date "2018.11.24"]
[Round "4"]
[White "Erdmann, Stefan"]
[Black "Laux, Dominik"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "2216"]
[BlackElo "1973"]
[PlyCount "139"]
[EventDate "2018.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. b3 Nbd7 6. Bd3 b6 7. 0-0 Bb7 8. Bb2 Be7 9. Nbd2 c5 10. cxd5 exd5 11. Ne5 0-0 12. Qf3 cxd4 13. exd4 Bb4 14. Rfd1 Re8 15. Nf1 Bd6 16. Re1 Bxe5 17. dxe5 Ne4 18. Bxe4 dxe4 19. Qg3 Nc5 20. Ne3 Nd3 21. Nf5 g6 22. Red1 Qc7 23. Nh6+ Kf8 24. Ba3+ Kg7 25. Nf5+ Kg8 26. Bd6 Qd7 27. Nh6+ Kg7 28. Ng4 Qf5 29. Ne3 Qd7 30. f4 Kh8 31. Ng4 Re6 32. Rf1 f5 33. Ne3 Ree8 34. Nc4 Bd5 35. Ne3 Be6 36. Qh4 Rac8 37. Rad1 Rc6 38. Rd2 Qf7 39. Rfd1 Rc3 40. Rc2 Rxc2 41. Nxc2 Bxb3 42. axb3 Qxb3 43. Qf6+ Kg8 44. e6 Qxe6 45. Qxe6+ Rxe6 46. Ba3 b5 47. Nb4 a5 48. Nxd3 exd3 49. Rxd3 b4 50. Bb2 a4 51. Rd8+ Kf7 52. Ra8 a3 53. Bxa3 bxa3 54. Rxa3 Re2 55. Ra7+ Re7 56. Ra6 Re6 57. Ra8 Re2 58. Kf1 Re7 59. Kf2 Kg7 60. Kf3 Rb7 61. Ra3 Re7 62. h3 Rf7 63. g4 fxg4+ 64. hxg4 h5 65. gxh5 g5 66. Kg4 gxf4 67. Rf3 Kh7 68. Kg5 Rb7 69. Rxf4 Rc7 70. Rg4 1/2-1/2

[Event "Heusenstamm Sparkassen op-A 5th"]
[Site "Heusenstamm"]
[Date "2018.11.23"]
[Round "2"]
[White "Erdmann, Stefan"]
[Black "Heppert, Lars"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "2216"]
[BlackElo "1940"]
[PlyCount "45"]
[EventDate "2018.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 0-0 6. Bg2 Nbd7 7. 0-0 e5 8. e4 c6 9. h3 a5 10. Re1 Qc7 11. Be3 Rd8 12. Qc2 exd4 13. Nxd4 Nc5 14. Rad1 Ne6 15. Nde2 b5 16. cxb5 Bb7 17. bxc6 Qxc6 18. Qd2 Ne8 19. Nd5 Qb5 20. Nec3 Bxc3 21. Nxc3 Qh5 22. Nd5 Bxd5 23. exd5 1-0

[Event "Heusenstamm Sparkassen op-A 5th"]
[Site "Heusenstamm"]
[Date "2018.11.23"]
[Round "3"]
[White "Leck, Gerrit"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "1993"]
[BlackElo "2216"]
[PlyCount "99"]
[EventDate "2018.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 Nf6 6. Re1 a6 7. Ba4 b5 8. Bc2 Bg4 9. d3 e6 10. h3 Bh5 11. Nbd2 Nd7 12. Qe2 Be7 13. Nf1 0-0 14. Ng3 Bg6 15. d4 cxd4 16. cxd4 Nb6 17. b3 d5 18. e5 Bxc2 19. Qxc2 Rc8 20. Qe2 Nb4 21. Rd1 Rc2 22. Rd2 Qc7 23. Ba3 Rc8 24. Ne1 Rc6 25. Nf1 Qd7 26. Ne3 R6c7 27. Bb2 Nc6 28. Rc2 Nb4 29. Rd2 Qe8 30. Nd3 Nxd3 31. Qxd3 a5 32. Rc2 Rxc2 33. Nxc2 a4 34. Ba3 Bxa3 35. Nxa3 b4 36. Nc2 Rc3 37. Qa6 Nc8 38. Nxb4 axb3 39. axb3 Rxb3 40. Nc6 Nb6 41. Qb7 Kf8 42. Ra6 Qc8 43. Qxc8+ Nxc8 44. Ra8 Ke8 45. Na7 Ra3 46. Rxc8+ Kd7 47. Rc7+ Kxc7 48. Nb5+ Kb6 49. Nxa3 Ka5 50. Nc2 1-0

[Event "Heusenstamm Sparkassen op-A 5th"]
[Site "Heusenstamm"]
[Date "2018.11.22"]
[Round "1"]
[White "Reinecke, Katharina"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "D15"]
[WhiteElo "1917"]
[BlackElo "2216"]
[PlyCount "63"]
[EventDate "2018.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 a6 5. Nf3 b5 6. b3 Bg4 7. Bb2 Nbd7 8. Be2 e6 9. 0-0 bxc4 10. bxc4 Rb8 11. Qc1 Ne4 12. Nd2 Bxe2 13. Nxe2 f5 14. Nf4 Qf6 15. Nxe4 fxe4 16. Ba3 g5 17. Ne2 g4 18. Nf4 Bb4 19. cxd5 exd5 20. Bxb4 Rxb4 21. Qa3 Rb6 22. Rab1 Qe7 23. Qa4 Qd8 24. Rfd1 Rxb1 25. Rxb1 Qc8 26. Rc1 0-0 27. Qxc6 Qxc6 28. Rxc6 Rb8 29. g3 Rb1+ 30. Kg2 Nb6 31. a4 Nc4 32. h3 1/2-1/2

[Event "Rhein Main op-A 21st"]
[Site "Bad Homburg"]
[Date "2018.06.03"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Schmitt, Carsten1111"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2212"]
[BlackElo "1936"]
[PlyCount "83"]
[EventDate "2018.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nd2 c5 5. c3 Bd6 6. Bxd6 Qxd6 7. f4 0-0 8. Ngf3 b6 9. Ne5 Ba6 10. Bxa6 Nxa6 11. 0-0 Rae8 12. Kh1 Nd7 13. Qa4 Ndb8 14. Rf3 f6 15. Ng4 Qd7 16. Qd1 e5 17. Rh3 exd4 18. cxd4 cxd4 19. exd4 Nc6 20. Nb3 Re4 21. Rh4 Rfe8 22. Nf2 Re2 23. Nd3 Qf5 24. Ne5 Qe4 25. Nf3 Nab4 26. f5 Qxf5 27. Qf1 Nd3 28. Kg1 Rxb2 29. Nbd2 Ncb4 30. a3 Nc2 31. Rd1 Qe6 32. Qxd3 Qe3+ 33. Qxe3 Rxe3 34. a4 Ra3 35. Rh5 Rxa4 36. Rxd5 b5 37. Rd7 Raa2 38. Rc1 a5 39. Ne1 h6 40. Nd3 Nxd4 41. Rc8+ Kh7 42. Nxb2 1-0

[Event "Rhein Main op-A 21st"]
[Site "Bad Homburg"]
[Date "2018.06.02"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Will, Dominik"]
[Result "1/2-1/2"]
[ECO "E63"]
[WhiteElo "2212"]
[BlackElo "2140"]
[PlyCount "67"]
[EventDate "2018.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. g3 d6 6. Bg2 a6 7. 0-0 Nc6 8. Qd3 Bf5 9. e4 Bg4 10. h3 Bxf3 11. Bxf3 e5 12. d5 Nd4 13. Ne2 Nd7 14. Nxd4 exd4 15. Qc2 a5 16. Be2 Nc5 17. Bd3 Qd7 18. Kg2 a4 19. Bd2 Rfe8 20. h4 h5 21. Rae1 c6 22. f4 f5 23. exf5 Nxd3 24. Qxd3 Qxf5 25. Qxf5 gxf5 26. Rxe8+ Rxe8 27. Re1 Kf7 28. Rxe8 Kxe8 29. dxc6 bxc6 30. b4 axb3 31. axb3 Kd7 32. Kf3 d5 33. cxd5 cxd5 34. Ke2 1/2-1/2

[Event "Rhein Main op-A 21st"]
[Site "Bad Homburg"]
[Date "2018.06.02"]
[Round "6"]
[White "Mews, Bernhard"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2063"]
[BlackElo "2212"]
[PlyCount "140"]
[EventDate "2018.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nd2 c5 5. c3 Nc6 6. Ngf3 Be7 7. Ne5 Bd7 8. Bd3 Qb6 9. Rb1 Rc8 10. 0-0 cxd4 11. exd4 Nd8 12. Re1 Bc6 13. h3 Nd7 14. Qh5 Nxe5 15. Bxe5 Bf6 16. Bxf6 gxf6 17. Qh6 Ke7 18. Qg7 Rf8 19. Re3 Qc7 20. g3 Qd6 21. Rbe1 Kd7 22. Qxf6 Qe7 23. Qf4 Rc7 24. b4 Kc8 25. b5 Be8 26. Rb1 f6 27. c4 dxc4 28. Nxc4 b6 29. Qf3 Kb8 30. d5 Rc5 31. dxe6 Bxb5 32. Qf4+ Ka8 33. Rxb5 Rxb5 34. Be4+ Nb7 35. Nd6 Re5 36. Nxb7 Kb8 37. Bg2 Qxe6 38. Rxe5 Qxe5 39. Qxe5+ fxe5 40. Nd6 Rd8 41. Nc4 Rd1+ 42. Kh2 Ra1 43. Nxe5 Rxa2 44. Nd3 a5 45. g4 a4 46. Kg3 Rc2 47. Nb4 Rb2 48. Nc6+ Kc7 49. Bd5 Kd6 50. Bf7 b5 51. Nd4 b4 52. g5 Rd2 53. Nf5+ Ke5 54. Ne3 Rd7 55. Be8 Ra7 56. Nc2 b3 57. Na3 Kf5 58. h4 b2 59. Bb5 Rc7 60. Bd3+ Ke5 61. Nb5 Rb7 62. f4+ Kd5 63. Nc3+ Kd4 64. Nxa4 Kxd3 65. Nxb2+ Rxb2 66. Kf3 Kd4 67. h5 Kd5 68. Kg4 Ke6 69. f5+ Ke5 70. g6 h6 0-1

[Event "Rhein Main op-A 21st"]
[Site "Bad Homburg"]
[Date "2018.06.01"]
[Round "4"]
[White "Pichl, Michael"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2064"]
[BlackElo "2212"]
[PlyCount "80"]
[EventDate "2018.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 Nf6 3. Nf3 e6 4. 0-0 c5 5. d3 Nc6 6. Nbd2 Be7 7. e4 b6 8. Re1 Bb7 9. exd5 Nxd5 10. d4 cxd4 11. a3 Bf6 12. Nb3 Nde7 13. Nfxd4 Bxd4 14. Nxd4 Qxd4 15. Qxd4 Nxd4 16. Bxb7 Rd8 17. Be4 f5 18. Bd3 Nf3+ 19. Kf1 Nxe1 20. Kxe1 Kf7 21. f4 h6 22. b4 Nc6 23. Bb2 Nd4 24. Kf2 Nxc2 25. Rd1 Nd4 26. Ke3 Nc6 27. Rc1 Nb8 28. Rc7+ Rd7 29. Rc2 a6 30. a4 Rhd8 31. Be2 Rd6 32. b5 axb5 33. axb5 Nd7 34. Rc7 Kg6 35. Bf3 Nf6 36. Be5 Rd3+ 37. Ke2 Rd2+ 38. Ke1 Rxh2 39. Rb7 Rd3 40. Bc6 Rb3 0-1

[Event "Rhein Main op-A 21st"]
[Site "Bad Homburg"]
[Date "2018.05.31"]
[Round "2"]
[White "Boschek, Hans Joachim"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1948"]
[BlackElo "2212"]
[PlyCount "34"]
[EventDate "2018.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 Nc6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. exd6 Qxd6 8. Be2 Bf5 9. 0-0 Ndb4 10. Na3 Rc8 11. Be3 e6 12. Qa4 Be7 13. Rac1 0-0 14. d5 exd5 15. Nb5 Qg6 16. Nbd4 Bh3 17. Ne1 Nxd4 0-1

[Event "Rhein Main op-A 21st"]
[Site "Bad Homburg"]
[Date "2018.05.31"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Zilch, Lothar"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "2212"]
[BlackElo "1940"]
[PlyCount "51"]
[EventDate "2018.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 g6 4. g3 Bg7 5. Bg2 0-0 6. Nc3 c6 7. 0-0 Nbd7 8. e4 e5 9. h3 Qb6 10. c5 dxc5 11. dxe5 Ne8 12. e6 fxe6 13. Ng5 Ne5 14. f4 c4+ 15. Kh2 Nd3 16. e5 h6 17. Nge4 Bd7 18. Qg4 Kh7 19. h4 Rg8 20. h5 Bh8 21. hxg6+ Rxg6 22. Qh5 Nxc1 23. Ng5+ Kg7 24. Be4 Qxb2+ 25. Kh3 Rf6 26. exf6+ 1-0

[Event "Rhein Main op-A 21st"]
[Site "Bad Homburg"]
[Date "2018.05.30"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Bajorski, Marius"]
[Result "0-1"]
[ECO "E65"]
[WhiteElo "2212"]
[BlackElo "2008"]
[PlyCount "102"]
[EventDate "2018.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 Nbd7 6. Bg2 0-0 7. 0-0 c5 8. d5 Ng4 9. h3 Nge5 10. Nd2 Nb6 11. Qb3 e6 12. f4 Ned7 13. dxe6 fxe6 14. Nb5 Nf6 15. e4 d5 16. cxd5 exd5 17. e5 Ne8 18. Qc2 Qe7 19. Nb3 Bd7 20. Nc3 Nc7 21. a4 a5 22. Qd1 d4 23. Ne4 Nxa4 24. Nd6 b5 25. Rxa4 bxa4 26. Nxc5 Rab8 27. Nxd7 Qxd7 28. Qxd4 Ne8 29. Qc4+ Kh8 30. Rd1 Nxd6 31. Rxd6 Qb5 32. Qxb5 Rxb5 33. Bc6 a3 34. bxa3 Rb1 35. e6 Rxc1+ 36. Kf2 Bf6 37. Bb5 Rd8 38. Ra6 Rc2+ 39. Ke3 Rc3+ 40. Ke2 Rxa3 41. g4 Rb8 42. Bd3 Rb2+ 43. Ke3 Rbb3 44. Rd6 Be7 45. Rd7 Rxd3+ 46. Rxd3 Rxd3+ 47. Kxd3 Kg7 48. h4 Bf6 49. e7 Bxe7 50. Ke4 a4 51. Kd4 a3 0-1

[Event "Heusenstamm Sparkassen op-A 4th"]
[Site "Heusenstamm"]
[Date "2017.11.26"]
[Round "6"]
[White "Calvi, Stefan"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2092"]
[BlackElo "2194"]
[PlyCount "53"]
[EventDate "2017.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 d6 7. Bc4 Nc6 8. 0-0 Be7 9. Qe2 0-0 10. Bd2 Bd7 11. Nc3 Nxc3 12. Bxc3 d5 13. Bd3 Qb6 14. a3 Rac8 15. Rfe1 Na5 16. Bxa5 Qxa5 17. Rad1 Ba4 18. Rc1 Rc7 19. Rxc7 Qxc7 20. h4 Rc8 21. g3 Qb6 22. Kg2 a6 23. Rh1 g6 24. Qd2 h5 25. Bb1 Rc4 26. Bd3 Rc8 27. Bb1 1/2-1/2

[Event "Heusenstamm Sparkassen op-A 4th"]
[Site "Heusenstamm"]
[Date "2017.11.26"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Held, Carsten"]
[Result "1/2-1/2"]
[ECO "A58"]
[WhiteElo "2194"]
[BlackElo "2070"]
[PlyCount "44"]
[EventDate "2017.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nf3 Bxa6 7. Nc3 d6 8. g3 Bg7 9. Bg2 Nbd7 10. Rb1 0-0 11. 0-0 Qa5 12. Qc2 Nb6 13. Nd2 Bc4 14. Nxc4 Nxc4 15. Rd1 Rfb8 16. e4 Nd7 17. Bd2 Nxd2 18. Qxd2 Nb6 19. Bf1 Na4 20. Nxa4 Qxd2 21. Rxd2 Rxa4 22. a3 Rxe4 1/2-1/2

[Event "Heusenstamm Sparkassen op-A 4th"]
[Site "Heusenstamm"]
[Date "2017.11.25"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Seehaus, Bernhard"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2194"]
[BlackElo "2008"]
[PlyCount "51"]
[EventDate "2017.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Be7 6. Qc2 Nbd7 7. Be2 h6 8. 0-0 0-0 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 Nf6 12. Qe3 Qc7 13. Ne5 c5 14. Qg3 Ne4 15. Qd3 Nf6 16. Bxh6 Ne8 17. Be3 cxd4 18. Bxd4 Bf6 19. Ng4 Bxd4 20. Qxd4 Bd7 21. Rad1 Bc6 22. Rd3 Qb6 23. Nh6+ gxh6 24. Rg3+ Kh7 25. Bd3+ f5 26. Qg4 1-0

[Event "Heusenstamm Sparkassen op-A 4th"]
[Site "Heusenstamm"]
[Date "2017.11.25"]
[Round "4"]
[White "Hentzgen, Thomas"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2037"]
[BlackElo "2194"]
[PlyCount "121"]
[EventDate "2017.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. g3 c6 4. Bg2 Bf5 5. 0-0 h6 6. c3 e6 7. Qb3 Qb6 8. Qxb6 axb6 9. Bf4 Nbd7 10. h3 g5 11. Be3 Bd6 12. g4 Bg6 13. Nbd2 b5 14. a3 Ng8 15. Nh2 Ne7 16. f4 f6 17. Nb3 Nb6 18. Nc5 Bxc5 19. dxc5 Nc4 20. Bc1 0-0 21. Rf2 Kg7 22. Nf1 gxf4 23. Rxf4 e5 24. Rf2 f5 25. g5 f4 26. gxh6+ Kh7 27. e3 fxe3 28. Rxf8 Rxf8 29. Nxe3 Na5 30. Bd2 Nb3 31. Rf1 Rxf1+ 32. Nxf1 Nxc5 33. Bg5 Nf5 34. Ne3 Nxe3 35. Bxe3 Na4 36. Bc1 Nb6 37. Kf2 Nc4 38. Bf1 Nd6 39. Be2 d4 40. cxd4 exd4 41. Bf4 Ne4+ 42. Ke1 Nc5 43. Kd1 Ne6 44. Bd2 Be4 45. Bg4 Nc5 46. Be2 Nb3 47. Bf4 Kg6 48. Bg4 c5 49. Be6 c4 50. Bg8 Kh5 51. h7 Bxh7 52. Bxh7 Kh4 53. Bd2 Kxh3 54. Bb4 Kg4 55. Be4 Kf4 56. Bxb7 d3 57. Bc3 Ke3 58. Bc6 d2 59. Bxb5 Kd3 60. a4 Ke4 61. Bxc4 1-0

[Event "Heusenstamm Sparkassen op-A 4th"]
[Site "Heusenstamm"]
[Date "2017.11.24"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Pap, Misa"]
[Result "0-1"]
[ECO "A81"]
[WhiteElo "2194"]
[BlackElo "2494"]
[PlyCount "80"]
[EventDate "2017.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c3 Bg7 5. Qb3 Nc6 6. Nf3 e6 7. Bg5 h6 8. Bxf6 Qxf6 9. Nbd2 d6 10. e3 e5 11. d5 Ne7 12. c4 0-0 13. 0-0 g5 14. e4 f4 15. Ne1 g4 16. f3 h5 17. Rc1 Qg5 18. Rc2 c5 19. Kf2 Ng6 20. Ke2 fxg3 21. hxg3 gxf3+ 22. Bxf3 Qxg3 23. Qe3 Nf4+ 24. Kd1 Nh3 25. Rc3 h4 26. Qe2 Nf4 27. Qe3 h3 28. Rg1 Qh4 29. Nf1 Rf6 30. Nh2 Rg6 31. Rxg6 Nxg6 32. Be2 Bd7 33. Qg1 Nf4 34. Bg4 Bxg4+ 35. Nxg4 Rf8 36. Nf3 Qh7 37. Nf2 Rf6 38. Qg4 h2 39. Nh1 Qxe4 40. Rc2 Qd3+ 0-1

[Event "Heusenstamm Sparkassen op-A 4th"]
[Site "Heusenstamm"]
[Date "2017.11.24"]
[Round "2"]
[White "Kuhn, Gerhard"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "2035"]
[BlackElo "2194"]
[PlyCount "58"]
[EventDate "2017.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 g6 4. Nbd2 Bg7 5. b3 0-0 6. Bb2 Nbd7 7. Bd3 c6 8. 0-0 Qc7 9. c4 Re8 10. Re1 Nh5 11. Rc1 Qa5 12. Bc3 Qd8 13. e4 dxe4 14. Nxe4 Nhf6 15. Ng3 e6 16. Qd2 b6 17. Rcd1 Bb7 18. Qb2 Qc7 19. Bf1 Rad8 20. Qa3 c5 21. dxc5 bxc5 22. Be2 h5 23. Qb2 Re7 24. Rxd7 Rexd7 25. Bxf6 Bxf6 26. Qxf6 Bxf3 27. Bxf3 Rd4 28. Ne4 Qa5 29. Ra1 Rd1+ 0-1

[Event "Heusenstamm Sparkassen op-A 4th"]
[Site "Heusenstamm"]
[Date "2017.11.23"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Wolff, Peter"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2194"]
[BlackElo "1906"]
[PlyCount "79"]
[EventDate "2017.11.23"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. Be2 0-0 8. 0-0 Re8 9. h3 Qe7 10. Rd1 a5 11. e4 dxe4 12. Nxe4 Nxe4 13. Qxe4 f5 14. Qc2 h6 15. c5 Bc7 16. Bc4 b5 17. cxb6 Nxb6 18. Ne5 Bb7 19. Bf4 Rad8 20. Ng6 Qf7 21. Bxc7 Qxc7 22. Re1 Nd5 23. Rad1 Qb6 24. a3 Kh7 25. Ne5 Rf8 26. Ba2 Rf6 27. Bb1 Kg8 28. Nc4 Qc7 29. Rd2 c5 30. Ne3 Nf4 31. dxc5 Rxd2 32. Qxd2 Rg6 33. Qd6 Qc8 34. Qxf4 Qc6 35. f3 e5 36. Qxf5 Rg5 37. Ba2+ Kh8 38. Qf8+ Kh7 39. Bg8+ Kg6 40. Qf7# 1-0

[Event "Heusenstamm Sparkassen op-A 3rd"]
[Site "Heusenstamm"]
[Date "2016.11.27"]
[Round "6"]
[White "Dubiel, Jacek"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "B63"]
[WhiteElo "2422"]
[BlackElo "2155"]
[PlyCount "49"]
[EventDate "2016.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 175 Extra"]
[Source "ChessBase"]
[SourceDate "2016.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2016.12.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 Nxd4 9. Qxd4 0-0 10. f3 a6 11. h4 b5 12. Qd2 Qa5 13. Kb1 b4 14. Ne2 e5 15. Nc1 Be6 16. g4 Rfd8 17. Bxf6 Bxf6 18. g5 Be7 19. Bh3 Bc4 20. b3 Bb5 21. h5 Be8 22. g6 h6 23. Rhg1 f6 24. Be6+ Kf8 25. Qxh6 1-0

[Event "Heusenstamm Sparkassen op-A 3rd"]
[Site "Heusenstamm"]
[Date "2016.11.27"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Konik, Michael"]
[Result "1/2-1/2"]
[ECO "E09"]
[WhiteElo "2155"]
[BlackElo "2049"]
[PlyCount "33"]
[EventDate "2016.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c6 5. Qc2 Nbd7 6. Bg2 Be7 7. 0-0 0-0 8. Nbd2 b6 9. e4 dxc4 10. Nxc4 Ba6 11. Re1 Rc8 12. Qa4 Bb5 13. Qb3 a5 14. a4 Ba6 15. Bg5 h6 16. Bxf6 Nxf6 17. Ne3 1/2-1/2

[Event "Heusenstamm Sparkassen op-A 3rd"]
[Site "Heusenstamm"]
[Date "2016.11.27"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Osmanodja, Filiz"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2155"]
[BlackElo "2308"]
[PlyCount "86"]
[EventDate "2016.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Be7 6. Bg2 c6 7. Qc2 0-0 8. 0-0 b6 9. Bf4 Ba6 10. Nbd2 Nbd7 11. Rfe1 Nh5 12. Be3 f5 13. cxd5 cxd5 14. Qa4 Bb7 15. Ne5 Nxe5 16. dxe5 g5 17. Bd4 Qe8 18. Qxe8 Raxe8 19. Rac1 Rc8 20. Nb3 Ng7 21. Rxc8 Rxc8 22. Rc1 Rxc1+ 23. Nxc1 Ne8 24. e3 Nc7 25. Bf1 Na6 26. Ne2 Nc5 27. Nc3 a6 28. Be2 Bd8 29. b4 Nd7 30. f4 gxf4 31. exf4 Be7 32. a3 a5 33. Bb5 Nb8 34. Bxb6 axb4 35. axb4 Bxb4 36. Ne2 Ba6 37. Bxa6 Nxa6 38. Kg2 Kf7 39. h3 Nc5 40. Bxc5 Bxc5 41. Nc1 Ba3 42. Nd3 Ke7 43. g4 Kf7 1/2-1/2

[Event "Heusenstamm Sparkassen op-A 3rd"]
[Site "Heusenstamm"]
[Date "2016.11.27"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Seifert, Norbert"]
[Result "1-0"]
[ECO "A51"]
[WhiteElo "2155"]
[BlackElo "1961"]
[PlyCount "33"]
[EventDate "2016.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 d6 5. Nf3 Nc6 6. Bf4 g5 7. Qd5 Nxf2 8. Nxg5 Qd7 9. Kxf2 Qf5 10. Qe4 dxe5 11. Qxf5 Bxf5 12. Be3 h6 13. Nf3 0-0-0 14. Nc3 Be6 15. g3 Bxc4 16. Bh3+ Kb8 17. Rhd1 1-0

[Event "Heusenstamm Sparkassen op-A 3rd"]
[Site "Heusenstamm"]
[Date "2016.11.27"]
[Round "4"]
[White "Will, Jens Robert"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "A23"]
[WhiteElo "2011"]
[BlackElo "2155"]
[PlyCount "82"]
[EventDate "2016.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 c6 4. Bg2 Bb4 5. Qb3 Qe7 6. d3 h6 7. Bd2 a5 8. a3 Bxc3 9. Bxc3 a4 10. Qc2 d6 11. e3 Nbd7 12. Ne2 Nc5 13. 0-0 Bf5 14. e4 Bg4 15. f3 Bh5 16. d4 Nb3 17. Rad1 Nd7 18. Bh3 f6 19. Bb4 Rd8 20. Bxd7+ Rxd7 21. dxe5 fxe5 22. Qd3 c5 23. Bc3 0-0 24. Nc1 Nd4 25. Bxd4 cxd4 26. Na2 Qg5 27. Nb4 Qe3+ 28. Qxe3 dxe3 29. Rde1 Rxf3 30. Rxf3 Bxf3 31. Rxe3 Rf7 32. Nd5 Bg4 33. Kg2 Kf8 34. Nc3 Rc7 35. Nxa4 Rxc4 36. Nc3 Rd4 37. b4 Rd2+ 38. Kg1 Bh3 39. Re2 Rd3 40. Nb5 Rd1+ 41. Kf2 Bf1 0-1

[Event "Heusenstamm Sparkassen op-A 3rd"]
[Site "Heusenstamm"]
[Date "2016.11.25"]
[Round "2"]
[White "Korneev, Oleg"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2582"]
[BlackElo "2155"]
[PlyCount "45"]
[EventDate "2016.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 175 Extra"]
[Source "ChessBase"]
[SourceDate "2016.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2016.12.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. Re1 Nf6 6. c3 a6 7. Bf1 Bg4 8. h3 Bh5 9. g4 Bg6 10. d4 e6 11. d5 Ne5 12. Nfd2 exd5 13. f4 Nxe4 14. fxe5 Qh4 15. Nxe4 Bxe4 16. Rxe4 dxe4 17. Qa4+ b5 18. Bxb5+ Ke7 19. Kg2 h5 20. exd6+ Kf6 21. Qxe4 hxg4 22. Qf4+ Kg6 23. Bd3+ 1-0

[Event "Heusenstamm Sparkassen op-A 3rd"]
[Site "Heusenstamm"]
[Date "2016.11.24"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Thomas, Tobias"]
[Result "1-0"]
[ECO "E77"]
[WhiteElo "2155"]
[BlackElo "1842"]
[PlyCount "75"]
[EventDate "2016.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 c5 6. d5 0-0 7. Nf3 Re8 8. Be2 e6 9. e5 dxe5 10. fxe5 Ng4 11. Bg5 Qa5 12. 0-0 Nxe5 13. Ne4 Nxf3+ 14. Bxf3 Nd7 15. Nd6 Rf8 16. Be7 Qb6 17. Bxf8 Nxf8 18. Nxc8 Rxc8 19. dxe6 Nxe6 20. Qd7 Qc7 21. Qxc7 Rxc7 22. Rab1 Nd4 23. b3 Nxf3+ 24. gxf3 Bd4+ 25. Kg2 Re7 26. Rfe1 Kf8 27. Rxe7 Kxe7 28. Re1+ Kd7 29. Kg3 f6 30. Re2 Bc3 31. Kf4 Ba5 32. h4 Bc7+ 33. Kg4 h5+ 34. Kh3 Bf4 35. Re1 a6 36. Rg1 g5 37. Rd1+ Bd6 38. Rd5 1-0

[Event "Eschborn op"]
[Site "Eschborn"]
[Date "2016.09.04"]
[Round "4"]
[White "Erdmann, Stefan"]
[Black "Mager, Thomas"]
[Result "1-0"]
[ECO "A81"]
[WhiteElo "2129"]
[BlackElo "1770"]
[PlyCount "143"]
[EventDate "2016.09.02"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c3 Bg7 5. Qb3 d5 6. Nh3 0-0 7. Bg5 c6 8. a4 h6 9. Bxf6 Bxf6 10. Nf4 Kg7 11. Nd2 e5 12. dxe5 Bxe5 13. Nf3 Bxf4 14. gxf4 Nd7 15. h4 h5 16. Rh3 Qe7 17. Ng5 Qd6 18. Rd1 Nc5 19. Qb4 Ne4 20. Qd4+ Qf6 21. Nf3 Be6 22. Ng5 Nxg5 23. hxg5 Qxd4 24. cxd4 b6 25. Rc3 Bd7 26. Ra1 Rfb8 27. b4 a6 28. Kd2 Kf7 29. Rac1 Rc8 30. b5 axb5 31. axb5 Ra2+ 32. Kd3 Ke6 33. bxc6 Be8 34. Rb1 Ra6 35. Rb5 Bxc6 36. Bxd5+ Kd6 37. Bxc6 Rxc6 38. Rxc6+ Kxc6 39. Re5 Kd6 40. Re8 Kd5 41. Rd8+ Ke6 42. d5+ Ke7 43. Rb8 Ra3+ 44. Kc4 Ra4+ 45. Kb5 Rxf4 46. Rxb6 Rxf2 47. Kc6 Rxe2 48. Rb7+ Kd8 49. Rg7 Ra2 50. d6 Ra6+ 51. Kd5 Ra1 52. Rxg6 Rd1+ 53. Ke6 Re1+ 54. Kxf5 Rf1+ 55. Ke6 Re1+ 56. Kf6 Rf1+ 57. Kg7 Kd7 58. Rh6 h4 59. Rxh4 Kxd6 60. Re4 Kd5 61. Re8 Ra1 62. g6 Rg1 63. Kh7 Rh1+ 64. Kg8 Kd6 65. g7 Kd7 66. Re4 Rh2 67. Kf7 Rf2+ 68. Kg6 Rg2+ 69. Kf6 Rf2+ 70. Kg5 Rg2+ 71. Rg4 Rxg4+ 72. Kxg4 1-0

[Event "Eschborn op"]
[Site "Eschborn"]
[Date "2016.09.03"]
[Round "2"]
[White "Erdmann, Stefan"]
[Black "Tojcic, Josip"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2129"]
[BlackElo "1704"]
[PlyCount "39"]
[EventDate "2016.09.02"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Ba6 5. Bd3 Bb4+ 6. Nbd2 0-0 7. a3 Be7 8. 0-0 d5 9. b4 c5 10. b5 Bb7 11. a4 Nbd7 12. Bb2 Rc8 13. a5 dxc4 14. Bxc4 Ne4 15. axb6 axb6 16. Ra7 Nxd2 17. Nxd2 Qc7 18. d5 e5 19. Ne4 f5 20. d6+ 1-0

[Event "Eschborn op"]
[Site "Eschborn"]
[Date "2016.09.03"]
[Round "3"]
[White "Grieme, Jens"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1913"]
[BlackElo "2129"]
[PlyCount "69"]
[EventDate "2016.09.02"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Qxd4 e6 6. Nf3 Nc6 7. Qe4 f5 8. exf6 Nxf6 9. Qh4 e5 10. Bd3 e4 11. Bxe4 Qe7 12. 0-0 Nxe4 13. Re1 d5 14. Ng5 Bf5 15. f3 h6 16. fxe4 hxg5 17. Qxh8 0-0-0 18. Qh5 Bxe4 19. Bxg5 Qe5 20. Qg4+ Rd7 21. Bf4 Bc5+ 22. Be3 Bxb1 23. Raxb1 Bxe3+ 24. Kh1 Ne7 25. Qf3 Nf5 26. g4 Nd6 27. Qxe3 Ne4 28. c4 g5 29. cxd5 Rh7 30. Rbc1+ Kb8 31. Rc2 Re7 32. Rce2 Qxd5 33. Kg1 Qd7 34. Qf3 Qd4+ 35. Kg2 1-0

[Event "Eschborn op"]
[Site "Eschborn"]
[Date "2016.09.02"]
[Round "1"]
[White "Lopez, Victor"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1586"]
[BlackElo "2129"]
[PlyCount "108"]
[EventDate "2016.09.02"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 d6 4. Bb5 Bd7 5. Nf3 Nf6 6. d3 e6 7. 0-0 Be7 8. Bxc6 Bxc6 9. Nc3 0-0 10. Re1 b5 11. e5 Nd7 12. exd6 Bxd6 13. Ne4 Be7 14. Qe2 h6 15. Qe3 Qc7 16. a3 Rac8 17. Rad1 Rfd8 18. Nfd2 Bf8 19. Qg3 Qxg3 20. hxg3 Nb6 21. Nf3 f6 22. d4 c4 23. Nc5 Bxf3 24. gxf3 Bxc5 25. dxc5 Rxd1 26. Rxd1 Rxc5 27. Rd8+ Kf7 28. Bd4 Rd5 29. Bxb6 axb6 30. Rb8 cxb3 31. cxb3 Rd3 32. Rxb6 Rxb3 33. Ra6 Rxf3 34. Kg2 Rd3 35. a4 bxa4 36. Rxa4 e5 37. Rb4 h5 38. Ra4 Kg6 39. Ra7 Kh6 40. Ra8 g6 41. Rh8+ Kg5 42. Ra8 Rd4 43. Ra2 h4 44. Re2 hxg3 45. Kxg3 Rd3+ 46. f3 Kf5 47. Kf2 g5 48. Re4 Rd4 49. Re3 Kf4 50. Ke2 f5 51. Ra3 Rb4 52. Kf2 Rb2+ 53. Kg1 Kg3 54. Kf1 Rf2+ 0-1

[Event "Rhein Main op-A 18th"]
[Site "Bad Homburg"]
[Date "2015.06.07"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Lenz, Jonas"]
[Result "1/2-1/2"]
[ECO "A68"]
[WhiteElo "2134"]
[BlackElo "2000"]
[PlyCount "78"]
[EventDate "2015.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Nf3 0-0 9. Be2 Bg4 10. 0-0 Nbd7 11. h3 Bxf3 12. Bxf3 Re8 13. g4 h6 14. Qc2 c4 15. Be3 Qa5 16. e5 dxe5 17. g5 Nh7 18. f5 Nxg5 19. Bxg5 Qb6+ 20. Kh1 hxg5 21. fxg6 Qxg6 22. Qxg6 fxg6 23. Bg4 Nf6 24. Be6+ Rxe6 25. dxe6 Re8 26. Rad1 Rxe6 27. Rd8+ Kh7 28. Rc8 Re7 29. Rxc4 e4 30. Kg2 e3 31. Re1 a6 32. Kf3 b5 33. Rc6 b4 34. Nd1 Nd5 35. Nxe3 Bxb2 36. Nxd5 Rxe1 37. Rxa6 Bc3 38. Ra7+ Kh8 39. Ra5 Bd2 1/2-1/2

[Event "Rhein Main op-A 18th"]
[Site "Bad Homburg"]
[Date "2015.06.06"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Trumpp, Lothar"]
[Result "1/2-1/2"]
[ECO "E68"]
[WhiteElo "2134"]
[BlackElo "2054"]
[PlyCount "104"]
[EventDate "2015.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 g6 3. c4 Bg7 4. Nc3 Nd7 5. g3 Ngf6 6. Bg2 0-0 7. 0-0 Re8 8. e4 e5 9. d5 Nc5 10. Ne1 a5 11. Nd3 Nxd3 12. Qxd3 Nd7 13. b3 Nc5 14. Qc2 f5 15. f3 Rf8 16. Be3 b6 17. a3 f4 18. Bf2 g5 19. b4 Nb7 20. g4 h5 21. h3 Rf6 22. Rfc1 Bf8 23. Qd3 Bd7 24. Nb5 Qb8 25. Bf1 Rh6 26. Qc3 Kf7 27. c5 axb4 28. axb4 Rxa1 29. Rxa1 bxc5 30. bxc5 Nxc5 31. Bxc5 dxc5 32. Na3 Qb4 33. Qxe5 Bd6 34. Qxg5 Qd4+ 35. Kg2 Rg6 36. Qd8 Bxg4 37. hxg4 Qxa1 38. Nc4 hxg4 39. Qd7+ Kg8 40. Qe8+ Kh7 41. Qf7+ Qg7 42. Qxg7+ Kxg7 43. e5 Be7 44. fxg4 Rxg4+ 45. Kf3 Rg1 46. Nd2 Bg5 47. Kf2 Rh1 48. Kg2 Rh8 49. Ne4 Be7 50. Kf3 Rf8 51. d6 cxd6 52. exd6 Bxd6 1/2-1/2

[Event "Rhein Main op-A 18th"]
[Site "Bad Homburg"]
[Date "2015.06.06"]
[Round "6"]
[White "Pichl, Michael"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "2036"]
[BlackElo "2134"]
[PlyCount "119"]
[EventDate "2015.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. g3 c5 2. Bg2 Nc6 3. c4 g6 4. Nc3 Bg7 5. a3 e5 6. b4 d6 7. Rb1 Nge7 8. Nf3 f5 9. 0-0 e4 10. Ng5 h6 11. Nh3 Be6 12. Qb3 g5 13. d3 Qd7 14. f4 Nd4 15. Qb2 g4 16. Nf2 cxb4 17. axb4 Rc8 18. Be3 d5 19. Qd2 0-0 20. Nxd5 Bxd5 21. Bxd4 Bxd4 22. e3 Be6 23. exd4 Qxd4 24. Qe2 Rfd8 25. Rfe1 b5 26. cxb5 Nd5 27. Rbc1 Nc3 28. Qd2 Nxb5 29. Rxc8 Rxc8 30. Bf1 Kf7 31. Qe3 Qxe3 32. Rxe3 Rc3 33. Nd1 Rc1 34. Nf2 Nd4 35. dxe4 Nf3+ 36. Kg2 Bc8 37. Ra3 a6 38. exf5 h5 39. Ra2 Bb7 40. Nd3 Ne5+ 41. Kf2 Rxf1+ 42. Kxf1 Nxd3 43. Ra4 Nb2 44. Ra5 Bc6 45. Rc5 Bb5+ 46. Kg2 Kf6 47. Re5 Nd3 48. Re6+ Kxf5 49. Rh6 Nxb4 50. Rxh5+ Ke4 51. Re5+ Kd4 52. h4 gxh3+ 53. Kxh3 Nd5 54. Re1 a5 55. f5 a4 56. g4 Bd3 57. Kh4 Kc3 58. Ra1 Kb3 59. Kg5 a3 60. f6 1/2-1/2

[Event "Rhein Main op-A 18th"]
[Site "Bad Homburg"]
[Date "2015.06.05"]
[Round "4"]
[White "Fischer, Ulrich"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "1774"]
[BlackElo "2134"]
[PlyCount "79"]
[EventDate "2015.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nbd2 Nd7 5. e4 dxe4 6. Nxe4 Ngf6 7. Bd3 Nxe4 8. Bxe4 Bb4+ 9. Bd2 Qa5 10. 0-0 Bxd2 11. Nxd2 Nf6 12. Bf3 Qc7 13. c5 0-0 14. Nc4 b6 15. Re1 Rd8 16. b4 Rb8 17. Ne5 Nd5 18. Bxd5 exd5 19. Qa4 b5 20. Qb3 f6 21. Nf3 Bf5 22. Re3 Re8 23. Rae1 Qf7 24. a4 a6 25. Nd2 Kf8 26. axb5 axb5 27. Qc3 Ra8 28. Rxe8+ Rxe8 29. Nb3 Re4 30. f3 Re7 31. Na5 Bd7 32. Kf2 g5 33. Rxe7 Qxe7 34. Qe3 Qg7 35. Nb7 f5 36. f4 h6 37. g3 Qf6 38. Nd6 Kg7 39. fxg5 hxg5 40. Kf3 1/2-1/2

[Event "Rhein Main op-A 18th"]
[Site "Bad Homburg"]
[Date "2015.06.04"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Noe, Christopher"]
[Result "0-1"]
[ECO "A68"]
[WhiteElo "2134"]
[BlackElo "2413"]
[PlyCount "96"]
[EventDate "2015.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Na6 10. 0-0 Nc7 11. e5 dxe5 12. d6 Ne6 13. fxe5 Nd7 14. Qd5 Rb8 15. Re1 b6 16. Bb5 Bb7 17. Bc6 Bxc6 18. Qxc6 Nd4 19. Qd5 Nxf3+ 20. gxf3 Qh4 21. Re4 Qh5 22. f4 b5 23. Qd1 Qxd1+ 24. Nxd1 c4 25. Be3 f5 26. Rd4 Nc5 27. Rxc4 bxc4 28. Bxc5 Kf7 29. Rc1 g5 30. Bxa7 Rb7 31. Bd4 gxf4 32. Rxc4 Ke6 33. Rc5 Rb4 34. Bc3 Re4 35. Nf2 Re3 36. d7 Rd8 37. Rb5 Rxd7 38. Rb6+ Kf7 39. Nh3 Bxe5 40. Ng5+ Kg8 41. Bxe5 Rxe5 42. Kf2 Re3 43. Rb4 Rd2+ 44. Kf1 h6 45. Rb8+ Kg7 46. Rb7+ Kg6 47. Nf7 f3 48. Nh8+ Kh5 0-1

[Event "Rhein Main op-A 18th"]
[Site "Bad Homburg"]
[Date "2015.06.04"]
[Round "2"]
[White "Schindelmeiser, Frank"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1940"]
[BlackElo "2134"]
[PlyCount "76"]
[EventDate "2015.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. Bg2 g6 5. 0-0 Bg7 6. d3 0-0 7. Bd2 dxc4 8. dxc4 Ne4 9. Qc1 Nxd2 10. Nbxd2 Qb6 11. Rb1 c5 12. Ne4 Bf5 13. Nh4 Bg4 14. Qe3 Nc6 15. h3 Be6 16. b3 Nd4 17. g4 Bd7 18. Kh1 e6 19. f4 f5 20. Ng5 Bc6 21. Ngf3 Be4 22. Rbd1 Qc7 23. Ng5 Bxg2+ 24. Nxg2 Rae8 25. Qd2 h6 26. e3 hxg5 27. exd4 fxg4 28. hxg4 Bxd4 29. Ne1 gxf4 30. Nf3 Qc6 31. Kg2 Kg7 32. Rh1 e5 33. Rh3 Qe6 34. Rh4 Rh8 35. Rdh1 Rxh4 36. Rxh4 Rh8 37. Nxd4 exd4 38. Kh3 Qe3+ 0-1

[Event "Rhein Main op-A 18th"]
[Site "Bad Homburg"]
[Date "2015.06.03"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Lipp, Mirko"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2134"]
[BlackElo "1938"]
[PlyCount "103"]
[EventDate "2015.06.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 a6 5. Qc2 g6 6. Bd3 Bg7 7. Nf3 0-0 8. 0-0 Nbd7 9. b3 Re8 10. Bb2 e6 11. h3 b6 12. e4 dxe4 13. Nxe4 Nxe4 14. Bxe4 Bb7 15. Ne5 Nxe5 16. dxe5 Qc7 17. c5 Rac8 18. f4 bxc5 19. Qxc5 Bf8 20. Qc4 c5 21. Rfd1 Bxe4 22. Qxe4 Red8 23. Qc4 Qb6 24. Kf1 Qb5 25. Bc3 Qxc4+ 26. bxc4 Rb8 27. Rxd8 Rxd8 28. Ke2 Rb8 29. Kd3 Kg7 30. Kc2 Be7 31. g3 f6 32. Rd1 Rb7 33. exf6+ Bxf6 34. Rd6 Bxc3 35. Kxc3 Rb1 36. Rxe6 Rg1 37. Re3 Kf6 38. Kb3 h5 39. Ka4 Rc1 40. Re4 Rc3 41. Ka5 Rxg3 42. a4 Ra3 43. Re5 Rxh3 44. Kxa6 Rf3 45. Kb5 h4 46. a5 h3 47. a6 Ra3 48. Kb6 h2 49. Re1 Kf5 50. Rh1 Ra2 51. a7 Kxf4 52. Rxh2 1-0

[Event "Eschborn op 11th"]
[Site "Eschborn"]
[Date "2014.09.07"]
[Round "4"]
[White "Erdmann, Stefan"]
[Black "Peschel, Andreas"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "2124"]
[BlackElo "2073"]
[PlyCount "95"]
[EventDate "2014.09.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Nf6 5. Bd3 Nbd7 6. 0-0 Bd6 7. Nbd2 0-0 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Nf6 11. Bg5 h6 12. Bxf6 Qxf6 13. Re1 c5 14. dxc5 Bxc5 15. Qe2 Rd8 16. Rad1 Bd7 17. Ne5 Be8 18. Bxb7 Rab8 19. Rxd8 Rxd8 20. Bf3 Bb4 21. Ng4 Qf4 22. g3 Qc7 23. Rb1 Rd2 24. Qf1 Bc5 25. Qe1 Bb4 26. a3 Rd3 27. Qe4 Rxf3 28. Qxf3 Bc6 29. Qe2 Bd6 30. c5 Bxc5 31. Rc1 Ba8 32. Kf1 Qc6 33. f3 Bb7 34. Kg2 Qd5 35. Nf2 Bd4 36. Ne4 e5 37. g4 Qb3 38. Rc2 Ba6 39. Qd2 Bd3 40. Rc8+ Kh7 41. Nc3 Ba6 42. Rc7 Bb6 43. Re7 Qc4 44. Qe1 Bd4 45. h4 Qb3 46. Qb1+ g6 47. h5 Bxc3 48. Qxg6+ 1-0

[Event "Eschborn op 11th"]
[Site "Eschborn"]
[Date "2014.09.06"]
[Round "2"]
[White "Erdmann, Stefan"]
[Black "Klug, Christian"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2124"]
[BlackElo "1850"]
[PlyCount "43"]
[EventDate "2014.09.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 0-0 9. Be2 cxd4 10. cxd4 Qa5+ 11. Bd2 Qxa2 12. 0-0 Bg4 13. Bg5 h6 14. Be3 Nc6 15. d5 Na5 16. Rb4 b6 17. e5 Bxf3 18. Bxf3 Nc4 19. d6 Nxe5 20. Bxa8 Rxa8 21. dxe7 Nc6 22. Re4 1-0

[Event "Eschborn op 11th"]
[Site "Eschborn"]
[Date "2014.09.06"]
[Round "3"]
[White "Schmitz, Martin"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1843"]
[BlackElo "2124"]
[PlyCount "68"]
[EventDate "2014.09.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c4 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 d6 7. Nc3 Nf6 8. Be2 0-0 9. Qd2 Ng4 10. Bxg4 Bxg4 11. f3 Bd7 12. Nxc6 Bxc6 13. Bh6 f6 14. Bxg7 Kxg7 15. h4 a6 16. h5 g5 17. h6+ Kh8 18. Ne2 Rg8 19. 0-0-0 b5 20. Nd4 Bd7 21. cxb5 axb5 22. Kb1 Qb6 23. Rhe1 b4 24. Nf5 Be6 25. b3 Ra7 26. Qb2 Rf8 27. g4 Kg8 28. f4 Rfa8 29. Nxe7+ Rxe7 30. Qxf6 Qf2 31. Qxg5+ Kf8 32. Qf6+ Kg8 33. Qg5+ Kh8 34. Qf6+ Kg8 1/2-1/2

[Event "Eschborn op 11th"]
[Site "Eschborn"]
[Date "2014.09.05"]
[Round "1"]
[White "Heinz, Tobias"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "1461"]
[BlackElo "2124"]
[PlyCount "60"]
[EventDate "2014.09.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bf4 dxc4 5. e3 b5 6. Nf3 Nbd7 7. Qc2 Nd5 8. Bg3 e6 9. Ne4 Bb4+ 10. Nfd2 0-0 11. a3 Qa5 12. Bd6 Bxd6 13. Nxd6 c5 14. Be2 cxd4 15. exd4 Qb6 16. Nxc8 Raxc8 17. 0-0 Qxd4 18. Rfd1 Qb6 19. Rac1 N7f6 20. Nf3 Rfd8 21. Bd3 h6 22. Be4 Ne3 23. fxe3 Qxe3+ 24. Kf1 Qxe4 25. Qf2 Rxd1+ 26. Rxd1 Ng4 27. Qe2 Qxe2+ 28. Kxe2 Nf6 29. Ne5 Nd5 30. Rf1 Rc7 0-1

[Event "Eschborn op 10th"]
[Site "Eschborn"]
[Date "2013.09.01"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Rutsatz, Mario"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2137"]
[BlackElo "1919"]
[PlyCount "49"]
[EventDate "2013.08.30"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[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. e4 Nxc3 6. bxc3 c5 7. Nf3 Bg7 8. Rb1 0-0 9. Be2 b6 10. 0-0 Bb7 11. Qd3 Ba6 12. Qe3 cxd4 13. cxd4 Bxe2 14. Qxe2 Qd7 15. Bg5 Nc6 16. d5 Nd4 17. Nxd4 Bxd4 18. Rb3 Rfe8 19. Rd1 Qa4 20. Rbd3 Bc5 21. Bh6 Rac8 22. Qb2 f6 23. e5 fxe5 24. Qxe5 Bxf2+ 25. Kh1 1-0

[Event "Eschborn op 10th"]
[Site "Eschborn"]
[Date "2013.09.01"]
[Round "4"]
[White "Spitzl, Philipp"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "D79"]
[WhiteElo "1953"]
[BlackElo "2137"]
[PlyCount "120"]
[EventDate "2013.08.30"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. Bg2 g6 5. 0-0 Bg7 6. cxd5 cxd5 7. Nc3 Nc6 8. d4 0-0 9. Ne5 Bf5 10. Bg5 Nxe5 11. dxe5 Ne4 12. Nxe4 dxe4 13. e6 f6 14. Be3 Qc8 15. Qd7 Bxe6 16. Qxc8 Raxc8 17. Bxe4 b6 18. Rab1 Bc4 19. Bf3 e5 20. b3 Be6 21. Rfd1 Kf7 22. a4 Rfd8 23. Rxd8 Rxd8 24. a5 bxa5 25. Bxa7 Rd2 26. b4 axb4 27. Rxb4 f5 28. e4 Rd7 29. Be3 Bf8 30. Rb1 Bd6 31. exf5 gxf5 32. Bh5+ Kf6 33. Bf3 f4 34. gxf4 exf4 35. Bd4+ Ke7 36. Re1 Rd8 37. Bg4 Rg8 38. Rxe6+ Kf7 39. Rxd6 Rxg4+ 40. Kf1 Rh4 41. Kg2 Rh5 42. Rf6+ Kg8 43. Rxf4 Rd5 44. Kf3 h6 45. Ke4 Ra5 46. Rg4+ Kf7 47. Rg7+ Kf8 48. Rg6 h5 49. Rf6+ Kg8 50. Rf5 Ra6 51. Rxh5 Ra4 52. Rh8+ Kf7 53. h4 Ra3 54. f4 Rh3 55. Kf5 Rd3 56. Be5 Rb3 57. h5 Rb1 58. h6 Rh1 59. h7 Rh5+ 60. Kg4 Kg6 1-0

[Event "Eschborn op 10th"]
[Site "Eschborn"]
[Date "2013.08.31"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Kolker, Vladislav"]
[Result "1-0"]
[ECO "D21"]
[WhiteElo "2137"]
[BlackElo "1945"]
[PlyCount "58"]
[EventDate "2013.08.30"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[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 dxc4 4. e4 b5 5. a4 e6 6. axb5 cxb5 7. b3 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 a5 10. bxc4 b4 11. Bd3 Bb7 12. 0-0 Nf6 13. Qf4 h6 14. e5 Nfd7 15. Nbd2 0-0 16. Qg3 f5 17. exf6 Nxf6 18. Rfe1 Nc6 19. Rxe6 Nxd4 20. Rd6 Nxf3+ 21. Nxf3 Qb8 22. Nd4 Nh5 23. Qg6 Rf6 24. Rxf6 Nxf6 25. Ne6 Ne8 26. Re1 Qd6 27. Qh7+ Kf7 28. Bg6+ Kf6 29. Bxe8 Rxe8 1-0

[Event "Eschborn op 10th"]
[Site "Eschborn"]
[Date "2013.08.31"]
[Round "2"]
[White "Ottenburg, Ralph"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "D70"]
[WhiteElo "1870"]
[BlackElo "2137"]
[PlyCount "115"]
[EventDate "2013.08.30"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[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. b3 Bg7 6. Bb2 0-0 7. Qc2 Bf5 8. Bd3 Bxd3 9. Qxd3 Ne4 10. Nc3 f5 11. Ne5 e6 12. 0-0 Nd7 13. Nxd7 Qxd7 14. f3 Nxc3 15. Bxc3 Rad8 16. Rad1 Rf7 17. Rfe1 Bf8 18. e4 Bd6 19. cxd5 cxd5 20. e5 Bf8 21. Qd2 Qb5 22. Rc1 Ba3 23. Bb2 Bf8 24. Rc2 a5 25. Rec1 a4 26. bxa4 Qxa4 27. Rc7 Rxc7 28. Rxc7 Bb4 29. Bc3 Bxc3 30. Rxc3 Ra8 31. Rc2 b5 32. Qc3 b4 33. Qb3 Qxb3 34. axb3 Ra1+ 35. Kf2 Rb1 36. Rc7 Rxb3 37. Re7 Rd3 38. Rxe6 Rxd4 39. Ke3 Rc4 40. Kd3 b3 41. Rb6 Rc2 42. Kd4 Rxg2 43. Kxd5 Rxh2 44. Ke6 Kg7 45. Rb7+ Kh6 46. Kf6 b2 47. e6 Re2 48. e7 Rxe7 49. Kxe7 Kg5 50. Rxb2 Kf4 51. Kf6 Kxf3 52. Kg5 h5 53. Rb3+ Kg2 54. Rb6 h4 55. Kxh4 f4 56. Rb2+ Kf3 57. Kg5 Kg3 58. Kxg6 1/2-1/2

[Event "Eschborn op 10th"]
[Site "Eschborn"]
[Date "2013.08.30"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Reichel, Guenther"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "2137"]
[BlackElo "1566"]
[PlyCount "59"]
[EventDate "2013.08.30"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Bb4+ 5. Bd2 a5 6. Bxb4 axb4 7. Qb3 Qe7 8. c5 Nc6 9. Bxc6 bxc6 10. Qxb4 0-0 11. Qb3 Ba6 12. Nc3 Rfb8 13. Qc2 Rb4 14. Nf3 Ne4 15. b3 Ng5 16. Nxg5 Qxg5 17. Rd1 Qg4 18. 0-0 f4 19. Qe4 Rf8 20. Rfe1 d5 21. cxd6 cxd6 22. Kg2 Rf6 23. f3 Qh5 24. g4 Qe8 25. Qc2 Rg6 26. Qd2 e5 27. dxe5 Qxe5 28. e4 h5 29. h3 c5 30. Qd5+ 1-0

[Event "Karl Mala Memorial op-A 16th"]
[Site "Frankfurt"]
[Date "2013.07.14"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Hornung, Thomas"]
[Result "0-1"]
[ECO "D23"]
[WhiteElo "2183"]
[BlackElo "1962"]
[PlyCount "66"]
[EventDate "2013.07.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Qc2 dxc4 5. Qxc4 Bg4 6. Nbd2 e6 7. g3 Be7 8. Bg2 0-0 9. 0-0 Nbd7 10. Ne5 Bh5 11. Nxd7 Qxd7 12. Nf3 Rfd8 13. e3 Rac8 14. Ne5 Qd6 15. b3 b5 16. Qc2 c5 17. Ba3 b4 18. Nc4 cxd4 19. Bc1 d3 20. Qd2 Qa6 21. f3 Nd5 22. Bb2 Nb6 23. Nxb6 Rc2 24. Qd1 Qxb6 25. Bd4 Qc7 26. Rf2 e5 27. Bb2 Rxf2 28. Kxf2 Qc2+ 29. Qxc2 dxc2 30. Ke2 e4 31. Bd4 exf3+ 32. Bxf3 Bxf3+ 33. Kxf3 Rxd4 0-1

[Event "Karl Mala Memorial op-A 16th"]
[Site "Frankfurt"]
[Date "2013.07.14"]
[Round "6"]
[White "Kersten, Uwe"]
[Black "Erdmann, Stefan"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2289"]
[BlackElo "2183"]
[PlyCount "31"]
[EventDate "2013.07.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 Nf6 6. Re1 a6 7. Bxc6 Bxc6 8. d4 e5 9. dxe5 dxe5 10. Qxd8+ Rxd8 11. Nxe5 Bxe4 12. f3 Bxb1 13. Ng6+ Be4 14. Nxh8 c4 15. fxe4 Bc5+ 16. Be3 1-0

[Event "Karl Mala Memorial op-A 16th"]
[Site "Frankfurt"]
[Date "2013.07.13"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Everett, Elijah David"]
[Result "1-0"]
[ECO "E63"]
[WhiteElo "2183"]
[BlackElo "1548"]
[PlyCount "139"]
[EventDate "2013.07.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. 0-0 Nc6 7. Nc3 a6 8. Qd3 Rb8 9. d5 Na7 10. a4 c5 11. h3 Bd7 12. e4 Qc7 13. a5 b5 14. axb6 Rxb6 15. Re1 e5 16. Nd1 Nh5 17. Bd2 Qb8 18. Ra3 f5 19. Ng5 f4 20. g4 Nf6 21. Ba5 Rb7 22. Bc3 Rb6 23. Nf3 h6 24. Nd2 g5 25. f3 Nc8 26. Qc2 Qa7 27. Nf2 Ne7 28. Rea1 Rfb8 29. Nd3 Ne8 30. Ba5 R6b7 31. Bf1 Kf7 32. Be2 Bf6 33. Bd1 Qa8 34. Qb1 Nc8 35. Ba4 Bxa4 36. Rxa4 Nb6 37. R4a3 Be7 38. Qa2 Nd7 39. Bc3 Nc7 40. Nb3 Kf8 41. Na5 Rb6 42. Nc6 Rxc6 43. dxc6 Qxc6 44. Rb3 Nb6 45. Ba5 Ne6 46. Kf2 Nd4 47. Rxb6 Rxb6 48. Bxb6 Qxb6 49. Qa4 Kf7 50. Ra2 Bd8 51. Nc1 a5 52. Ne2 Nc6 53. Nc3 Nb4 54. Nd5 Qb7 55. Qb3 Qa7 56. Ra1 Nc6 57. Qa4 Nb4 58. Ke2 Kf8 59. Kd2 Nxd5 60. exd5 e4 61. Qc2 Qg7 62. Qc3 Bf6 63. Qxa5 e3+ 64. Ke2 Qg6 65. Qa8+ Qe8 66. Qb7 Qe7 67. Qb8+ Qd8 68. Qb7 Qe7 69. Ra8+ Kf7 70. Qc8 1-0

[Event "Karl Mala Memorial op-A 16th"]
[Site "Frankfurt"]
[Date "2013.07.13"]
[Round "4"]
[White "Goebel, Andreas"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "2021"]
[BlackElo "2183"]
[PlyCount "76"]
[EventDate "2013.07.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Nf6 4. b3 Bg4 5. Bb2 Nbd7 6. d4 e6 7. Nbd2 Bd6 8. c4 0-0 9. 0-0 Qe7 10. Qc2 Bf5 11. Qc3 Ne4 12. Nxe4 Bxe4 13. a3 Rfe8 14. e3 Qf6 15. Ne5 Bxg2 16. Kxg2 Bxe5 17. dxe5 Qg6 18. Rfd1 Nb6 19. c5 Nd7 20. Rac1 Re7 21. Qb4 Rb8 22. Qa4 a6 23. Qd4 f6 24. exf6 gxf6 25. Qd3 e5 26. Qxg6+ hxg6 27. h4 Kf7 28. Kf3 Ke6 29. b4 Rh7 30. a4 g5 31. hxg5 fxg5 32. Rh1 Rf8+ 33. Ke2 Rfh8 34. Rxh7 Rxh7 35. Kf3 Nf6 36. Kg2 Ng4 37. Rc2 Kf5 38. Kg1 Ke4 0-1

[Event "Karl Mala Memorial op-A 16th"]
[Site "Frankfurt"]
[Date "2013.07.12"]
[Round "3"]
[White "Erdmann, Stefan"]
[Black "Poetsch, Hagen"]
[Result "0-1"]
[ECO "A62"]
[WhiteElo "2183"]
[BlackElo "2431"]
[PlyCount "72"]
[EventDate "2013.07.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg2 Bg7 8. Nf3 0-0 9. 0-0 Re8 10. Bf4 Na6 11. Re1 Nc7 12. a4 Ne4 13. Ra3 Bf5 14. Nd2 Nxc3 15. bxc3 g5 16. Be3 b5 17. Nf3 h6 18. Qd2 Qd7 19. h4 b4 20. cxb4 cxb4 21. Qxb4 Nxd5 22. Qd2 Nxe3 23. Rxe3 Rxe3 24. Qxe3 Re8 25. Qd2 g4 26. Nd4 Be4 27. a5 Bxg2 28. Kxg2 Qa4 29. Rd1 Re5 30. Rb1 Rd5 31. Rb8+ Kh7 32. Qd3+ f5 33. e3 Bxd4 34. Rb7+ Kg6 35. e4 Qa2 36. exf5+ Kh5 0-1

[Event "Karl Mala Memorial op-A 16th"]
[Site "Frankfurt"]
[Date "2013.07.12"]
[Round "2"]
[White "Guth, Wolf Dietrich"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1973"]
[BlackElo "2183"]
[PlyCount "44"]
[EventDate "2013.07.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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. Nc3 a6 5. a4 e6 6. Bg5 a5 7. e3 Be7 8. Bd3 Na6 9. 0-0 Nb4 10. Be2 0-0 11. Na2 b6 12. Ne5 Bb7 13. Nxb4 axb4 14. cxd5 exd5 15. f4 Ne4 16. Bxe7 Qxe7 17. Rc1 Rac8 18. a5 bxa5 19. Qa4 f6 20. Nxc6 Bxc6 21. Rxc6 Nd2 22. Kf2 Rfe8 0-1

[Event "Karl Mala Memorial op-A 16th"]
[Site "Frankfurt"]
[Date "2013.07.11"]
[Round "1"]
[White "Erdmann, Stefan"]
[Black "Blank, Stefan"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2183"]
[BlackElo "1895"]
[PlyCount "91"]
[EventDate "2013.07.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 g6 5. e4 d6 6. cxb5 a6 7. a4 Bg7 8. Nf3 0-0 9. Na3 Bb7 10. Bd3 Nbd7 11. 0-0 Ng4 12. Bd2 Nge5 13. Nxe5 Nxe5 14. bxa6 Bxa6 15. Bxa6 Rxa6 16. Bc3 f5 17. f4 Ng4 18. Bxg7 Kxg7 19. exf5 gxf5 20. h3 Nh6 21. Nc4 Qa8 22. Rfd1 Rb8 23. b3 Qb7 24. Rd3 Kf7 25. Qe2 Rg8 26. Qe6+ Kg7 27. Rg3+ Kh8 28. Rxg8+ Nxg8 29. Ra3 Nf6 30. Qxf5 Ra8 31. Nxd6 Qxd5 32. Qxd5 Nxd5 33. Ne4 Nxf4 34. Nxc5 Rg8 35. Ra2 Nxh3+ 36. Kh2 Nf4 37. b4 Nd5 38. b5 Rc8 39. Nd7 Rc7 40. Ne5 Nc3 41. Ra3 Nb1 42. Rg3 h6 43. b6 Rb7 44. a5 Nd2 45. Rg6 Ne4 46. a6 1-0

[Event "Karl Mala Memorial op 15th"]
[Site "Frankfurt"]
[Date "2012.07.08"]
[Round "6"]
[White "Erdmann, Stefan"]
[Black "Perlitz, Sven"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2171"]
[BlackElo "2085"]
[PlyCount "85"]
[EventDate "2012.07.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 0-0 9. Be2 b6 10. 0-0 Bb7 11. Qd3 Nd7 12. Bg5 Qc7 13. e5 f6 14. exf6 exf6 15. Bh4 Qc6 16. Rfd1 Qe4 17. Qd2 Rac8 18. Bc4+ Bd5 19. Qd3 Kh8 20. Bxd5 Qxd5 21. c4 Qh5 22. d5 f5 23. Be7 Rfe8 24. d6 f4 25. Qe4 Qg4 26. h3 Qf5 27. Qxf5 gxf5 28. Rd5 Bf8 29. Re1 b5 30. Rxf5 bxc4 31. Rxf4 c3 32. Bxf8 Rxf8 33. Rc4 Rf6 34. Ng5 h6 35. Ne4 Re6 36. Rxc3 Nf6 37. Rce3 Nd5 38. Ra3 Nf6 39. f3 Ra8 40. Ra6 Nd5 41. Rc6 Nb4 42. Rc7 Rd8 43. Rd1 1-0

[Event "Karl Mala Memorial op 15th"]
[Site "Frankfurt"]
[Date "2012.07.08"]
[Round "7"]
[White "Goebel, Constantin"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "B57"]
[WhiteElo "2266"]
[BlackElo "2171"]
[PlyCount "40"]
[EventDate "2012.07.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 7. Ndb5 a6 8. Be3 Qa5 9. Nd4 e6 10. f3 Be7 11. Qe2 Bd7 12. g4 Rc8 13. 0-0-0 Nxd4 14. Bxd4 b5 15. Bb3 b4 16. Nb1 Bb5 17. Qe3 Bc4 18. Nd2 Bxb3 19. Qxb3 0-0 20. h4 Nd7 1/2-1/2

[Event "Karl Mala Memorial op 15th"]
[Site "Frankfurt"]
[Date "2012.07.07"]
[Round "4"]
[White "Erdmann, Stefan"]
[Black "Beck, Michael"]
[Result "1/2-1/2"]
[ECO "E76"]
[WhiteElo "2171"]
[BlackElo "1983"]
[PlyCount "161"]
[EventDate "2012.07.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 Nbd7 7. e5 Ne8 8. c5 dxc5 9. dxc5 c6 10. Bc4 Nc7 11. Be3 e6 12. 0-0 Nd5 13. Nxd5 exd5 14. Bd3 Qe7 15. Qc1 Re8 16. Bd4 Nf8 17. b4 Bg4 18. Qc3 Qd7 19. Rae1 Bf5 20. h3 Bxd3 21. Qxd3 Ne6 22. Nh4 Qe7 23. g3 a5 24. a3 axb4 25. axb4 Ra2 26. Nf3 Qd7 27. Qb3 Rea8 28. Bb2 Nc7 29. Kg2 Nb5 30. Ra1 Rxa1 31. Rxa1 Rxa1 32. Bxa1 Qf5 33. Nd2 h6 34. Qb1 Qxb1 35. Nxb1 Bf8 36. Bb2 Be7 37. Nd2 Bd8 38. Nb3 Kf8 39. Kf3 Ke7 40. g4 Ke6 41. Nc1 Be7 42. Nd3 Bh4 43. f5+ Ke7 44. Ke2 Bg5 45. Kf2 Bh4+ 46. Kf3 Bg5 47. Kg3 Bd2 48. h4 Nc3 49. Bxc3 Bxc3 50. h5 g5 51. Kf3 Bd4 52. Ke2 Bg1 53. Kd2 Bd4 54. Kc2 b5 55. cxb6 Bxb6 56. Kc3 Kd7 57. Nb2 Bf2 58. Nd3 Bb6 59. Ne1 Bf2 60. Nf3 Bg3 61. Kb3 Bf4 62. Ka4 d4 63. Kb3 d3 64. Kc3 d2 65. Nxd2 Bxe5+ 66. Kc4 Bf4 67. Ne4 Be3 68. b5 cxb5+ 69. Kxb5 Ke7 70. Kc6 Bd4 71. Kd5 Bb2 72. Nd6 Bc3 73. Nb5 Bb2 74. Na7 Bc3 75. Nc8+ Kd7 76. Nb6+ Ke7 77. Ke4 Kd6 78. Nd5 Bb2 79. f6 Ke6 80. Ne7 Ba3 81. Nd5 1/2-1/2

[Event "Karl Mala Memorial op 15th"]
[Site "Frankfurt"]
[Date "2012.07.07"]
[Round "5"]
[White "Kuhn, Gerhard"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2018"]
[BlackElo "2171"]
[PlyCount "72"]
[EventDate "2012.07.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 e6 8. 0-0 Be7 9. Re1 0-0 10. Nbd2 dxe5 11. dxe5 Nf4 12. Nb3 Qxd1 13. Rxd1 Ng6 14. Re1 Rd8 15. Bd2 Bd7 16. Bc3 Rac8 17. Bf1 Nf4 18. Rac1 Nb4 19. Bxb4 Bxb4 20. Rxc8 Rxc8 21. Re4 Nd5 22. Nfd4 a6 23. a3 Be7 24. g3 Bd8 25. Re1 Bb6 26. Bd3 Kf8 27. Kf1 Ke7 28. Be4 Rc4 29. Nf3 h6 30. Bd3 Rc8 31. Nfd4 Ba4 32. Kg2 Rd8 33. Be4 Nc7 34. Rc1 Nd5 35. Rc4 Be8 36. f4 Ne3+ 0-1

[Event "Karl Mala Memorial op 15th"]
[Site "Frankfurt"]
[Date "2012.07.06"]
[Round "2"]
[White "Erdmann, Stefan"]
[Black "Anders, Eric"]
[Result "1-0"]
[ECO "E76"]
[WhiteElo "2171"]
[BlackElo "1814"]
[PlyCount "99"]
[EventDate "2012.07.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 b5 8. cxb5 a6 9. a4 Qa5 10. Bd2 Qb4 11. Qb1 axb5 12. Bxb5 Ba6 13. e5 dxe5 14. fxe5 Ng4 15. Nd1 Qb3 16. Bxa6 Nxa6 17. Qe4 Nh6 18. Ra3 Qb6 19. 0-0 Nf5 20. a5 Qb7 21. g4 Nh6 22. Qc4 Rab8 23. h3 Rfd8 24. Qc1 Nxg4 25. hxg4 Qxd5 26. Ne3 Qb7 27. Nc4 Qe4 28. Bf4 Rb4 29. Nfd2 Qd4+ 30. Kg2 g5 31. Bxg5 Bxe5 32. Nxe5 Qxe5 33. Nf3 Rxg4+ 34. Kf2 Qg3+ 35. Ke2 Qd6 36. Rg1 Re4+ 37. Kf2 Kf8 38. Bh6+ Ke8 39. Qc2 f5 40. Rg8+ Kd7 41. Rxd8+ Kxd8 42. Rd3 Rd4 43. Rxd4 cxd4 44. Bg7 d3 45. Qc3 Nc5 46. Qd4 Kd7 47. Ke3 Qxd4+ 48. Bxd4 d2 49. Nxd2 Na6 50. Kf4 1-0

[Event "Karl Mala Memorial op 15th"]
[Site "Frankfurt"]
[Date "2012.07.06"]
[Round "3"]
[White "Kobs, Stephan"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "B85"]
[WhiteElo "2035"]
[BlackElo "2171"]
[PlyCount "49"]
[EventDate "2012.07.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 7. Nb3 e6 8. Be3 Qc7 9. Be2 Be7 10. 0-0 0-0 11. f4 a6 12. a4 b6 13. g4 Bb7 14. g5 Nd7 15. Bd3 Nb4 16. Qh5 g6 17. Qh6 d5 18. Rf3 f5 19. Rh3 Rf7 20. Bd4 Nf8 21. exf5 exf5 22. Bxf5 Qxf4 23. Bxg6 Nxg6 24. Qxg6+ Kf8 25. Rxh7 1/2-1/2

[Event "Karl Mala Memorial op 15th"]
[Site "Frankfurt"]
[Date "2012.07.05"]
[Round "1"]
[White "Pham, Tran Phuong Bao"]
[Black "Erdmann, Stefan"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "1791"]
[BlackElo "2171"]
[PlyCount "89"]
[EventDate "2012.07.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Nf3 Nf6 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 Ng4 9. e3 d6 10. b3 Nxd4 11. exd4 Nh6 12. Bb2 Nf5 13. Nd5 Rb8 14. a4 e6 15. Ne3 a6 16. Nxf5 gxf5 17. Qd3 Bd7 18. a5 b5 19. axb6 Qxb6 20. Ra3 Bc6 21. Bxc6 Qxc6 22. Rfa1 Qe4 23. Qxe4 fxe4 24. Bc3 Rfc8 25. Kf1 d5 26. c5 e5 27. dxe5 Rxc5 28. Bd4 Rcb5 29. Rxa6 Rxb3 30. R1a5 Rb1+ 31. Ke2 Bf8 32. Ra8 h5 33. Rxb8 Rxb8 34. Rxd5 Bh6 35. Ra5 Rb4 36. Rd5 Ra4 37. Kf1 h4 38. Kg2 hxg3 39. hxg3 Ra2 40. Rd8+ Kh7 41. Kh3 Ra4 42. Be3 Bxe3 43. fxe3 Ra3 44. Kg4 Rxe3 45. Rd4 1/2-1/2

[Event "Rhein Main op-A 14th"]
[Site "Bad Homburg"]
[Date "2011.06.26"]
[Round "7"]
[White "Erdmann, Stefan"]
[Black "Will, Patrick"]
[Result "1-0"]
[ECO "E97"]
[WhiteElo "2164"]
[BlackElo "2021"]
[PlyCount "91"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. e4 d6 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2 Nd7 10. b4 f5 11. Ba3 Nf6 12. f3 f4 13. c5 g5 14. Nc4 Ng6 15. b5 dxc5 16. Bxc5 Rf7 17. a4 h5 18. a5 g4 19. b6 g3 20. Nb5 Nh7 21. Kh1 Qh4 22. Bg1 Bh3 23. gxh3 Qxh3 24. Rf2 gxf2 25. Bxf2 axb6 26. d6 cxd6 27. Nxb6 Rd8 28. Qb3 Ng5 29. Qd1 Kh7 30. Ra3 Bf8 31. Bf1 Qe6 32. Nd5 Nh3 33. Bb6 Rc8 34. Nbc7 Qd7 35. Ra2 Kh6 36. Rg2 Ng5 37. Bb5 Qh3 38. Rf2 Rg7 39. Bf1 Qh4 40. Rg2 Ne7 41. Bf2 Qh3 42. Rxg5 Qd7 43. Rxh5+ Kg6 44. Bh3 Nxd5 45. Bxd7 Rxd7 46. Nxd5 1-0

[Event "Rhein Main op-A 14th"]
[Site "Bad Homburg"]
[Date "2011.06.25"]
[Round "5"]
[White "Erdmann, Stefan"]
[Black "Bulski, Krzysztof"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "2164"]
[BlackElo "2479"]
[PlyCount "98"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Qa4+ c6 6. Qxc4 b5 7. Qc2 Bb7 8. Bg2 Nbd7 9. 0-0 Rc8 10. Bg5 c5 11. dxc5 Bxc5 12. Qb3 Qb6 13. Nc3 Ng4 14. Qxb5 Bxf2+ 15. Kh1 Bc6 16. Qxb6 Bxb6 17. h3 Ne3 18. Bxe3 Bxe3 19. Ne1 Bd4 20. Bxc6 Rxc6 21. Nd3 Bxc3 22. Rac1 Ke7 23. Rxc3 Rxc3 24. bxc3 Rc8 25. Rc1 Nb6 26. Kg1 f6 27. Kf2 e5 28. Ke1 Ke6 29. Kd2 Nc4+ 30. Kc2 h5 31. Kb3 g5 32. Kb4 a5+ 33. Kb5 Nd6+ 34. Kxa5 Ra8+ 35. Kb6 Rxa2 36. c4 e4 37. Nc5+ Ke7 38. Kc6 e3 39. Nb3 Rxe2 40. c5 Nf5 41. g4 hxg4 42. hxg4 Ng7 43. Kd5 Ne6 44. Ke4 Rb2 45. Na5 e2 46. Re1 Rb5 47. Nc6+ Kd7 48. Kf5 Rxc5+ 49. Kxf6 Rxc6 0-1

[Event "Rhein Main op-A 14th"]
[Site "Bad Homburg"]
[Date "2011.06.25"]
[Round "6"]
[White "Wagner, Dirk"]
[Black "Erdmann, Stefan"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "2038"]
[BlackElo "2164"]
[PlyCount "66"]
[EventDate "2011.06.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. cxd5 cxd5 6. Bf4 Nc6 7. e3 Bg4 8. Be2 e6 9. 0-0 Be7 10. Ne5 Bxe2 11. Qxe2 Rc8 12. Rfc1 0-0 13. Nxc6 Rxc6 14. a3 Qd7 15. Rc2 Rfc8 16. Rac1 b5 17. Nb1 Ne4 18. f3 Nd6 19. Bxd6 Bxd6 20. Rxc6 Rxc6 21. Rxc6 Qxc6 22. Qd2 Qc4 23. f4 a5 24. Kf2 b4 25. g4 g5 26. fxg5 Bxh2 27. Qd1 Bd6 28. b3 Qc7 29. axb4 Bxb4 30. Kg2 Qe7 31. Nd2 Qxg5 32. Kf3 f5 33. gxf5 Qh5+ 0-1

