[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2012.07.21"]
[Round "8"]
[White "Deinert, Wolfgang"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "1811"]
[BlackElo "1931"]
[PlyCount "34"]
[EventDate "2012.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Qd3 Bf5 16. Qf1 Qh5 17. f4 Bh3 1/2-1/2

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2012.07.20"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Wichard, Harald"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "1931"]
[PlyCount "135"]
[EventDate "2012.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 Nbd7 7. e5 dxe5 8. dxe5 Ne8 9. Bg5 h6 10. Bh4 c6 11. Qd2 Nc7 12. Rad1 Qe8 13. Rfe1 Nb6 14. h3 Be6 15. Qc1 Rd8 16. Rxd8 Qxd8 17. Rd1 Qe8 18. Nd4 g5 19. Nxe6 Nxe6 20. Bg3 Qb8 21. Qe3 Rd8 22. Rxd8+ Qxd8 23. h4 a6 24. hxg5 hxg5 25. b3 Qd4 26. Qxd4 Nxd4 27. Bd3 Nd7 28. Ne4 Bxe5 29. Bxe5 Nxe5 30. Nxg5 Nxd3 31. cxd3 Ne2+ 32. Kf1 Nc1 33. Ne4 b6 34. Nc3 Nxd3 35. Ke2 Nf4+ 36. Kf3 Nd5 37. Ne4 Kg7 38. a4 a5 39. g3 Kg6 40. Nd2 b5 41. axb5 cxb5 42. Ne4 a4 43. bxa4 bxa4 44. Nc5 a3 45. Nb3 a2 46. Kg4 Nb4 47. Na1 Kf6 48. Kf4 Nd3+ 49. Ke3 Nxf2 50. Kxf2 Kg5 51. Kf3 f5 52. Nc2 e5 53. Kf2 Kg4 54. Ne3+ Kh3 55. Nc2 e4 56. Na1 Kg4 57. Nb3 Kg5 58. Ke3 Kg4 59. Kf2 e3+ 60. Kxe3 Kxg3 61. Ke2 Kf4 62. Kd3 Ke5 63. Kc2 Ke4 64. Kb2 Ke3 65. Kxa2 f4 66. Kb2 f3 67. Kc2 f2 68. Nd2 1/2-1/2

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2012.07.19"]
[Round "6"]
[White "Gebhardt, Florian"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C47"]
[BlackElo "1931"]
[PlyCount "56"]
[EventDate "2012.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bc5 6. Nxc6 bxc6 7. Bd3 d6 8. 0-0 h6 9. Kh1 0-0 10. f4 Ng4 11. Qe1 Re8 12. Qg3 Bd7 13. f5 h5 14. h3 Ne5 15. Bh6 g6 16. f6 Nxd3 17. cxd3 Bd4 18. Bg7 Re6 19. Qg5 Bxf6 20. Bxf6 Qf8 21. Ne2 Rb8 22. Nf4 Rb5 23. Nxe6 Bxe6 24. Qh4 d5 25. g4 dxe4 26. dxe4 Qb4 27. Rae1 Bxa2 28. Bc3 Qd6 1-0

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2012.07.18"]
[Round "5"]
[White "Sieberg, Rolf"]
[Black "Oberste, Norbert"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1931"]
[BlackElo "1811"]
[PlyCount "87"]
[EventDate "2012.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Qb6 7. 0-0 Be7 8. Na3 a6 9. Nc2 h5 10. Ng5 g6 11. b3 Qd8 12. f4 cxd4 13. cxd4 Nh6 14. Ne3 Qa5 15. Bb2 f6 16. exf6 Bxf6 17. Bxh5 gxh5 18. Qxh5+ Ke7 19. Rae1 Raf8 20. f5 Kd6 21. fxe6 Be8 22. Qh4 Ne7 23. Qg3+ Kc6 24. Rc1+ Kb6 25. Qc7+ Ka7 26. Qxa5 Bxg5 27. Qc5+ Ka8 28. Rfe1 Bc6 29. Rc2 Nhf5 30. Nxf5 Nxf5 31. Bc1 Be7 32. Qc3 Rh4 33. Be3 Rfh8 34. g3 Nxg3 35. hxg3 Rh1+ 36. Kf2 R8h2+ 37. Kf3 Rxc2 38. Qxc2 Rxe1 39. Qh7 Bd6 40. e7 Ka7 41. Qf7 Bxg3 42. e8Q Bxe8 43. Qxe8 Bh4 44. Qh5 1-0

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2012.07.17"]
[Round "4"]
[White "Geyler, Stefan"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C48"]
[WhiteElo "1935"]
[BlackElo "1931"]
[PlyCount "55"]
[EventDate "2012.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 a6 5. Bxc6 dxc6 6. Nxe5 Qd4 7. Nf3 Qd8 8. h3 Bb4 9. d3 0-0 10. 0-0 Bxc3 11. bxc3 Be6 12. Bg5 h6 13. Bh4 Qd7 14. Bxf6 gxf6 15. Nh2 Kh7 16. Ng4 Qe7 17. Qf3 Bxg4 18. hxg4 Rg8 19. Qf5+ Rg6 20. g3 Rag8 21. Kg2 Kh8 22. Rh1 Qf8 23. Rh4 Qg7 24. Rah1 Re8 25. Qf4 Re5 26. Rxh6+ Kg8 27. R6h4 Ra5 28. Qxc7 1-0

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2012.07.16"]
[Round "3"]
[White "Sieberg, Rolf"]
[Black "Reisberg, Andre"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1931"]
[BlackElo "1965"]
[PlyCount "56"]
[EventDate "2012.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Bg4 6. h3 Bh5 7. 0-0 Ne7 8. Be3 Qd7 9. c3 Nbc6 10. Re1 0-0-0 11. Nbd2 f6 12. b4 Ng6 13. Qc2 Nce7 14. a4 Nf4 15. Bxf4 Bxf4 16. Bb5 c6 17. Bd3 g5 18. b5 Bg6 19. bxc6 Nxc6 20. Bxg6 hxg6 21. Qxg6 Rdf8 22. Nb3 Rhg8 23. Qb1 g4 24. Nc5 gxf3 25. Nxd7 Rxg2+ 26. Kf1 Bh2 27. Nb6+ Kb8 28. Nd7+ Ka8 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2012.07.15"]
[Round "2"]
[White "Lenaerts, Lennert"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2044"]
[BlackElo "1931"]
[PlyCount "77"]
[EventDate "2012.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 d6 5. e3 0-0 6. Nge2 Nbd7 7. d3 c5 8. 0-0 Rb8 9. a3 b6 10. Qa4 a6 11. b4 Qc7 12. Bb2 Bb7 13. e4 Qc8 14. Rac1 Ne5 15. Qc2 Bc6 16. f4 Ned7 17. Nd5 Nxd5 18. exd5 Bxb2 19. Qxb2 Bb7 20. Nc3 Nf6 21. Ne4 Nxe4 22. dxe4 f5 23. e5 Qe8 24. Rfe1 Qf7 25. Re3 Rbc8 26. Qe2 Rcd8 27. exd6 exd6 28. Re7 Rde8 29. Rxf7 Rxe2 30. Rxb7 Ra2 31. Rxb6 Re8 32. Bf3 Rxa3 33. Rf1 Ree3 34. bxc5 dxc5 35. d6 Rxf3 36. Rxf3 Rxf3 37. d7 Rd3 38. Rb8+ Kf7 39. d8Q 1-0

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2012.07.14"]
[Round "1"]
[White "Sieberg, Rolf"]
[Black "Sievert, Jan Thorwald"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1931"]
[BlackElo "2149"]
[PlyCount "75"]
[EventDate "2012.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[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 b6 3. d4 Bb7 4. Bd3 Nf6 5. Nd2 cxd4 6. cxd4 Nc6 7. Ngf3 e6 8. b3 Nb4 9. Qe2 Nxd3+ 10. Qxd3 a5 11. 0-0 Ba6 12. Nc4 d5 13. exd5 Nxd5 14. Re1 Be7 15. Bd2 0-0 16. Rac1 h6 17. Qe4 Bb4 18. Bxb4 axb4 19. a4 bxa3 20. Nxa3 Qd6 21. Nc4 Qb4 22. Qc2 Rac8 23. Qa2 Ra8 24. Qb1 Rfc8 25. Nfe5 Bb7 26. Nd3 Qe7 27. Ne3 Qg5 28. Rxc8+ Rxc8 29. Nxd5 Qxd5 30. Nf4 Qxd4 31. g3 e5 32. Ng2 Qd5 33. f3 Qxf3 34. Qb2 Rc3 35. Rxe5 Rc1+ 36. Re1 Qxg2+ 37. Qxg2 Rxe1+ 38. Qf1 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.25"]
[Round "9"]
[White "Zwielich, Frank"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "B06"]
[BlackElo "1951"]
[PlyCount "87"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. g3 g6 3. Bg2 Bg7 4. e4 d6 5. Ne2 0-0 6. 0-0 Nbd7 7. h3 e5 8. c3 c5 9. Be3 b6 10. g4 Bb7 11. Ng3 h6 12. f4 exf4 13. Bxf4 Re8 14. Qd3 Nf8 15. Nd2 Ne6 16. Bxd6 Qxd6 17. e5 Qc7 18. Bxb7 Qxb7 19. exf6 Bh8 20. d5 Rad8 21. c4 Nd4 22. Nb3 Nxb3 23. axb3 a5 24. Rf4 Re5 25. Raf1 Rde8 26. Re4 Qc7 27. Qf3 Rxe4 28. Nxe4 Qe5 29. Nc3 Qd4+ 30. Kg2 a4 31. bxa4 Qxc4 32. Qf4 Qd3 33. Rf3 Qc2+ 34. Rf2 Qd3 35. Rd2 Qe3 36. Qxe3 Rxe3 37. Rf2 Kf8 38. h4 Ke8 39. g5 hxg5 40. hxg5 Re5 41. Re2 Rxe2+ 42. Nxe2 Kd7 43. Kf3 Kd6 44. Ke4 1-0

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.24"]
[Round "8"]
[White "Sieberg, Rolf"]
[Black "Eckert, Marius"]
[Result "1/2-1/2"]
[ECO "C92"]
[WhiteElo "1951"]
[PlyCount "51"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. Re1 0-0 8. c3 d6 9. h3 Bb7 10. d4 Re8 11. Bg5 h6 12. Bxf6 Bxf6 13. Bd5 Qe7 14. dxe5 dxe5 15. Nbd2 Na5 16. Bxb7 Nxb7 17. Qc2 Red8 18. Rad1 Nc5 19. Nf1 c6 20. Ne3 g6 21. Rd2 Rxd2 22. Nxd2 Ne6 23. Nf3 Nf4 24. Rd1 Rd8 25. Rxd8+ Qxd8 26. Ng4 1/2-1/2

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.23"]
[Round "7"]
[White "Grasse, Herbert"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "A07"]
[BlackElo "1951"]
[PlyCount "42"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. 0-0 Nbd7 5. d3 e5 6. Nbd2 Bd6 7. e4 dxe4 8. dxe4 0-0 9. Nc4 Bc7 10. Nh4 Nc5 11. Qe2 Qe7 12. h3 Be6 13. Bg5 h6 14. Bxf6 Qxf6 15. Ne3 Rad8 16. Nhf5 Rd7 17. Rfd1 Rfd8 18. Bf3 Rxd1+ 19. Rxd1 Rxd1+ 20. Qxd1 Qd8 21. Qxd8+ Bxd8 1/2-1/2

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.22"]
[Round "6"]
[White "Sieberg, Rolf"]
[Black "Lienau, Henrik"]
[Result "1/2-1/2"]
[ECO "B27"]
[WhiteElo "1951"]
[BlackElo "1763"]
[PlyCount "60"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 g6 3. Nf3 Bg7 4. d4 cxd4 5. cxd4 d5 6. e5 Nc6 7. Be3 Nh6 8. Bd3 0-0 9. 0-0 Nf5 10. Nc3 Nxe3 11. fxe3 f6 12. exf6 exf6 13. Qb3 Ne7 14. e4 Be6 15. Qxb7 Rb8 16. Qxa7 Rxb2 17. Na4 Rb8 18. Nc5 Bf7 19. Qd7 dxe4 20. Bxe4 f5 21. Bd3 Rb2 22. Rfe1 Nc8 23. Qxd8 Rxd8 24. Ne6 Bxe6 25. Rxe6 Bxd4+ 26. Nxd4 Rxd4 27. Bf1 Nd6 28. Re2 Rxe2 29. Bxe2 Ra4 30. Bd1 Ra3 1/2-1/2

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.21"]
[Round "5"]
[White "Hecht, Carsten"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1773"]
[BlackElo "1951"]
[PlyCount "105"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 d6 6. 0-0 0-0 7. h3 Na5 8. Bb5 Bd7 9. Bxd7 Qxd7 10. Re1 c5 11. Nbd2 Nc6 12. Nf1 h6 13. Ng3 Nh7 14. Nf5 Bf6 15. Nh2 Ne7 16. Ng3 Bg5 17. d4 Bxc1 18. Rxc1 cxd4 19. cxd4 Rfd8 20. Ng4 Nc6 21. Nf5 f6 22. Nge3 Ne7 23. Nxe7+ Qxe7 24. Nd5 Qf7 25. Qb3 Kh8 26. Rc7 Rd7 27. Qxb7 Rad8 28. Rec1 Ng5 29. f3 Rxc7 30. Rxc7 Qg6 31. Kh2 f5 32. Rc8 Rxc8 33. Qxc8+ Kh7 34. Ne7 Qf7 35. Qxf5+ Qxf5 36. Nxf5 exd4 37. Nxd4 Nf7 38. Kg3 Kg6 39. b4 Kf6 40. a4 a6 41. b5 axb5 42. Nxb5 Ke7 43. a5 Ne5 44. a6 Nd7 45. a7 Nb6 46. Nc7 Kd7 47. a8Q Nxa8 48. Nxa8 Kc6 49. Kf4 Kb7 50. Kf5 Kxa8 51. Ke6 d5 52. exd5 Kb7 53. Ke7 1-0

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.20"]
[Round "4"]
[White "Sieberg, Rolf"]
[Black "Boehm, Juergen1"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1951"]
[BlackElo "2214"]
[PlyCount "84"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Nc6 6. 0-0 Bg4 7. h3 Bxf3 8. Qxf3 Nxd4 9. Qg4 Ne6 10. Re1 Ne7 11. Nc3 c6 12. Bg5 Nxg5 13. Qxg5 0-0 14. Re2 Ng6 15. Qxd8 Raxd8 16. Bxg6 hxg6 17. a3 Rfe8 18. Rae1 Kf8 19. Kf1 Rxe2 20. Rxe2 Re8 21. Rxe8+ Kxe8 22. Ke2 Be5 23. Nd1 b5 24. Kd3 Kd7 25. c3 c5 26. Ne3 c4+ 27. Ke2 d4 28. cxd4 Bxd4 29. Nd1 Kd6 30. f3 Ke5 31. g3 g5 32. Kd2 Kd5 33. Ke2 Kc5 34. Ke1 a5 35. Ke2 b4 36. axb4+ axb4 37. Kd2 Bxb2 38. Nxb2 c3+ 39. Kc2 cxb2 40. f4 gxf4 41. gxf4 Kd4 42. Kxb2 Ke4 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.19"]
[Round "3"]
[White "Bluebaum, Matthias"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2098"]
[BlackElo "1951"]
[PlyCount "43"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Nbd7 7. 0-0 e5 8. Be3 exd4 9. Nxd4 Nc5 10. f3 a5 11. Qd2 Bd7 12. b3 Ne6 13. Rad1 Nxd4 14. Bxd4 Qe7 15. Rfe1 b6 16. f4 Rad8 17. Bf3 Bg4 18. e5 dxe5 19. fxe5 Qb4 20. exf6 Bxf6 21. Nd5 Bxd4+ 22. Qxd4 1-0

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.18"]
[Round "2"]
[White "Sieberg, Rolf"]
[Black "Liedtke, Dirk"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "1951"]
[BlackElo "2191"]
[PlyCount "83"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Bc4 d6 5. Nf3 Nf6 6. 0-0 0-0 7. h3 b5 8. Bd3 Nfd7 9. Be3 Nb6 10. Qd2 Re8 11. b3 N8d7 12. Rad1 Qc7 13. a3 a6 14. Rfe1 Bb7 15. Bh6 Bh8 16. Be3 c5 17. dxc5 dxc5 18. Bf4 e5 19. Bg3 Nf8 20. Bf1 Rad8 21. Qe2 b4 22. Rxd8 Rxd8 23. axb4 cxb4 24. Na2 Qc5 25. Qe3 Qxe3 26. Rxe3 a5 27. Bxe5 Bxe5 28. Nxe5 Rd1 29. c4 Ra1 30. Re2 Ne6 31. Nd3 Nd4 32. Rb2 Bxe4 33. Nac1 Ra3 34. f3 Bxd3 35. Bxd3 Nd7 36. Be2 Ra1 37. Bf1 Rxc1 38. Rd2 Nxb3 39. Rxd7 a4 40. Kf2 Rc2+ 41. Ke1 a3 42. Ra7 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2010.07.17"]
[Round "1"]
[White "Bouaraba, Max"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "2224"]
[BlackElo "1951"]
[PlyCount "75"]
[EventDate "2010.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. Bf4 d6 6. h3 Nbd7 7. e3 c5 8. d5 Ne8 9. Be2 f5 10. Qd2 Ne5 11. 0-0 Nxf3+ 12. Bxf3 Nf6 13. Rfe1 Bd7 14. e4 Nxe4 15. Bxe4 fxe4 16. Nxe4 Bxb2 17. Qxb2 Rxf4 18. Qd2 Qf8 19. Re3 Bf5 20. Ng5 Qf6 21. Rae1 Qxg5 22. Rxe7 Bxh3 23. g3 Rf5 24. Qb2 Qf6 25. Qd2 Re5 26. R1xe5 dxe5 27. d6 Qf3 28. Qd5+ Qxd5 29. cxd5 Rd8 30. Rxb7 Rxd6 31. Rxa7 Rxd5 32. Rc7 Be6 33. a4 c4 34. Kg2 Ra5 35. Kf3 Rxa4 36. Ke4 c3+ 37. Kxe5 Rc4 38. Re7 0-1

[Event "Dortmund Sparkassen op"]
[Site "Dortmund"]
[Date "2008.07.05"]
[Round "8"]
[White "Richters, Marc"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "1961"]
[BlackElo "2004"]
[PlyCount "55"]
[EventDate "2008.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 g6 3. e4 d6 4. f4 Bg7 5. Nf3 0-0 6. Bc4 Nbd7 7. e5 Ne8 8. e6 fxe6 9. Bxe6+ Kh8 10. Ng5 Nb6 11. 0-0 Nf6 12. f5 Qe8 13. Bxc8 Rxc8 14. Ne6 Rf7 15. fxg6 hxg6 16. Bg5 Nbd7 17. Qd3 Nh5 18. g4 Rxf1+ 19. Rxf1 Nhf6 20. Qh3+ Kg8 21. Nxg7 Kxg7 22. Bh6+ Kg8 23. g5 Nh5 24. Qe6+ Kh8 25. Rf7 Qg8 26. Nd5 Nf8 27. Qxc8 Qxf7 28. Qxf8+ 1-0

[Event "Dortmund Sparkassen op"]
[Site "Dortmund"]
[Date "2008.07.04"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Dyballa, Gerhard"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2004"]
[BlackElo "2028"]
[PlyCount "36"]
[EventDate "2008.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Bg4 6. h3 Bh5 7. 0-0 Ne7 8. Re1 Nbc6 9. c3 Qd7 10. Be3 0-0-0 11. b4 Rdf8 12. b5 Nd8 13. Ne5 Bxd1 14. Nxd7 Kxd7 15. Rxd1 f5 16. Bg5 Ne6 17. Bxe7 Bxe7 18. Nd2 Nf4 1/2-1/2

[Event "Dortmund Sparkassen op"]
[Site "Dortmund"]
[Date "2008.07.03"]
[Round "6"]
[White "Overbeck, Christopher"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "1924"]
[BlackElo "2004"]
[PlyCount "21"]
[EventDate "2008.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 Qxc6 7. Bd3 Nf6 8. 0-0 0-0 9. e5 Ng4 10. Qf4 d6 11. Nc3 1/2-1/2

[Event "Dortmund Sparkassen op"]
[Site "Dortmund"]
[Date "2008.07.03"]
[Round "5"]
[White "Sieberg, Rolf"]
[Black "Bondarchuk, Vadim"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2004"]
[BlackElo "1993"]
[PlyCount "112"]
[EventDate "2008.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bc4 Nc6 5. Be3 e5 6. Nf3 exd4 7. Nxd4 Nxd4 8. Bxd4 Nf6 9. Nd5 c6 10. Nxf6+ Bxf6 11. 0-0 0-0 12. Bxf6 Qxf6 13. c3 b5 14. Bb3 Rd8 15. Qd4 Qxd4 16. cxd4 c5 17. dxc5 dxc5 18. Bd5 Rb8 19. Rfd1 Bb7 20. Bxb7 Rxd1+ 21. Rxd1 Rxb7 22. f4 Kf8 23. Kf2 Ke7 24. Rd5 c4 25. Ke3 Ke6 26. Kd4 h5 27. Kc5 Rb8 28. Kc6 b4 29. Rd6+ Ke7 30. Rd7+ Ke6 31. Rd6+ Ke7 32. Rd7+ Ke8 33. Rd2 c3 34. bxc3 bxc3 35. Rc2 Rb2 36. Rxc3 Rxa2 37. Kd6 Kf8 38. g3 Rxh2 39. Ra3 Rh3 40. Ke5 Kg7 41. f5 gxf5 42. Kxf5 h4 43. Rxa7 hxg3 44. Kg4 g2 45. Kxh3 g1Q 46. Re7 Kf6 47. Re8 Qg7 48. Kh2 Qg4 49. e5+ Kf5 50. e6 fxe6 51. Rf8+ Ke4 52. Kh1 e5 53. Ra8 Qe2 54. Rf8 Ke3 55. Rf5 e4 56. Re5 Qf1+ 0-1

[Event "Dortmund Sparkassen op"]
[Site "Dortmund"]
[Date "2008.07.02"]
[Round "4"]
[White "Sondermann, Dirk"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2116"]
[BlackElo "2004"]
[PlyCount "63"]
[EventDate "2008.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Nbd7 7. 0-0 e5 8. d5 Nc5 9. Nd2 a5 10. Qc2 Ne8 11. Nb3 b6 12. Nxc5 bxc5 13. Bd2 f5 14. f3 fxe4 15. fxe4 Rxf1+ 16. Rxf1 Nf6 17. Nb5 Bd7 18. Bg5 c6 19. Nc3 h6 20. Bh4 g5 21. Be1 cxd5 22. cxd5 Bg4 23. Bxg4 Nxg4 24. Qe2 Nf6 25. a4 Qd7 26. Nb5 Ne8 27. Rf3 Bf6 28. Rb3 Bd8 29. Qh5 Qh7 30. Qxe8+ Kg7 31. Qd7+ Kg8 32. Qxh7+ 1-0

[Event "Dortmund Sparkassen op"]
[Site "Dortmund"]
[Date "2008.07.01"]
[Round "2"]
[White "Fox, Jonas"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "1969"]
[BlackElo "2004"]
[PlyCount "67"]
[EventDate "2008.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 g6 3. e4 d6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Nbd7 7. 0-0 c5 8. d5 a6 9. a4 Ne8 10. Ne2 Nb6 11. c4 f5 12. e5 dxe5 13. fxe5 Nd7 14. Bf4 b6 15. Qb3 Bb7 16. Nc3 Bh8 17. Rae1 Ng7 18. e6 Nf6 19. Ne5 Ngh5 20. Nf7 Rxf7 21. exf7+ Kxf7 22. Be5 Nd7 23. Bxh8 Qxh8 24. Qd1 Qd4+ 25. Rf2 Ndf6 26. Be2 Qh4 27. Bxh5 Nxh5 28. Qe2 Rd8 29. g3 Qf6 30. Ne4 Qg7 31. Ng5+ Ke8 32. Ne6 Qf6 33. Nxd8 Kxd8 34. Qe6 1-0

[Event "Dortmund Sparkassen op"]
[Site "Dortmund"]
[Date "2008.07.01"]
[Round "3"]
[White "Sieberg, Rolf"]
[Black "Hannewald, Anton"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2004"]
[BlackElo "1898"]
[PlyCount "33"]
[EventDate "2008.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 e6 6. Nf3 b6 7. Nc3 Bb7 8. Bc4 Nxc3 9. bxc3 Qc7 10. Qd3 d6 11. Bb3 Nd7 12. Bf4 dxe5 13. Nxe5 Bd6 14. Nxf7 Kxf7 15. Qf5+ Nf6 16. Qxe6+ Kg6 17. Bc2+ 1-0

[Event "Dortmund Sparkassen op"]
[Site "Dortmund"]
[Date "2008.06.30"]
[Round "1"]
[White "Sieberg, Rolf"]
[Black "Kuempers, Ulrich"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2004"]
[BlackElo "2110"]
[PlyCount "56"]
[EventDate "2008.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 c6 2. c3 d5 3. exd5 cxd5 4. d4 Nc6 5. Nf3 Nf6 6. Be2 Bf5 7. 0-0 e6 8. Bf4 Bd6 9. Bxd6 Qxd6 10. Nbd2 h6 11. Re1 0-0 12. Nf1 Rfc8 13. Ng3 Bg6 14. Bd3 Bxd3 15. Qxd3 Rab8 16. Ne5 b5 17. a3 a5 18. h3 Qc7 19. Qf3 Nxe5 20. Rxe5 b4 21. cxb4 axb4 22. Re3 Qc4 23. Ne2 Qc2 24. Rb3 Ne4 25. Rc1 Nd2 26. Qe3 Qxc1+ 27. Nxc1 Rxc1+ 28. Kh2 Nf1+ 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2006.08.06"]
[Round "9"]
[White "Sieberg, Rolf"]
[Black "Singh, Marcel"]
[Result "0-1"]
[ECO "B04"]
[WhiteElo "2004"]
[BlackElo "1736"]
[PlyCount "104"]
[EventDate "2006.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 Nd7 6. Nxf7 Kxf7 7. Qh5+ Ke6 8. c4 N5f6 9. d5+ Kd6 10. Qf7 Ne5 11. c5+ Kxc5 12. b4+ Kd6 13. Bf4 Qe8 14. Qxe8 Nxe8 15. Na3 Kxd5 16. 0-0-0+ Ke4 17. Bg3 Kf5 18. Rd5 e6 19. Bd3+ Kf6 20. Bxe5+ Kf7 21. Rd4 c5 22. Rf4+ Nf6 23. Nb5 Bd7 24. bxc5 Bxc5 25. Nd6+ Bxd6 26. Bxd6 Bc6 27. f3 Rad8 28. Rd1 Rxd6 29. Bg6+ hxg6 30. Rxd6 Rxh2 31. g4 Ke7 32. Rd2 Rxd2 33. Kxd2 g5 34. Rb4 Bxf3 35. Ra4 Bxg4 36. Rxa7 Bf3 37. a4 Kf7 38. a5 Kg6 39. a6 bxa6 40. Rxa6 Kf5 41. Ke3 g4 42. Kf2 e5 43. Ra7 Nh5 44. Rf7+ Kg6 45. Ra7 e4 46. Ra6+ Kg5 47. Ra5+ Kh4 48. Ra7 g3+ 49. Kg1 g5 50. Ra5 Nf4 51. Ra7 Nh3+ 52. Kf1 g2+ 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2006.08.05"]
[Round "8"]
[White "Drose, Daniela"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "1719"]
[BlackElo "2004"]
[PlyCount "84"]
[EventDate "2006.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. d3 Bd7 7. Nc3 Qc8 8. Re1 Bh3 9. Bh1 Nc6 10. Bd2 e5 11. Qc1 Re8 12. Bh6 Bh8 13. Ng5 Bd7 14. Nge4 Nxe4 15. Bxe4 Nd4 16. Bg5 c6 17. Bg2 f6 18. Bd2 Bh3 19. Ne4 Bxg2 20. Kxg2 Qe6 21. e3 Nf5 22. Qd1 d5 23. Nc5 Qe7 24. Nb3 dxc4 25. dxc4 Rad8 26. Qe2 Nd6 27. Bb4 Qe6 28. Bxd6 Rxd6 29. Rad1 Red8 30. Rxd6 Rxd6 31. Nc5 Qf7 32. Rd1 Rxd1 33. Qxd1 b6 34. Qd8+ Kg7 35. Nd7 c5 36. a3 h5 37. b4 cxb4 38. axb4 Kh7 39. c5 Qd5+ 40. Kg1 Qd1+ 41. Kg2 Qd5+ 42. Kg1 Qd1+ 1/2-1/2

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2006.08.04"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Kusnetsov, Mark"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2004"]
[BlackElo "1803"]
[PlyCount "50"]
[EventDate "2006.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 Nc6 7. Nc3 Nxc3 8. bxc3 d6 9. Ba3 Qa5 10. Qb3 dxe5 11. Bxf8 Kxf8 12. dxe5 Nxe5 13. Be2 Nxf3+ 14. Bxf3 Qe5+ 15. Be2 g6 16. Rd1 Kg7 17. Rd2 b6 18. 0-0 Bb7 19. Rfd1 Qg5 20. Bf1 Rad8 21. Rd7 Bd5 22. Qb5 Rxd7 23. Qxd7 Rd8 24. Qxa7 Bxg2 25. Be2 Bh3+ 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2006.08.03"]
[Round "6"]
[White "Czygan, Dana"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "1720"]
[BlackElo "2004"]
[PlyCount "106"]
[EventDate "2006.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. e3 d6 6. Nge2 c5 7. d4 cxd4 8. exd4 Nc6 9. 0-0 Bf5 10. a3 Qc8 11. Be3 Bh3 12. Nf4 Bxg2 13. Kxg2 Ng4 14. Nfd5 Nxe3+ 15. fxe3 e6 16. Nf6+ Bxf6 17. Rxf6 Ne7 18. Qd3 Nf5 19. d5 Qxc4 20. Qxc4 Nxe3+ 21. Kh3 Nxc4 22. dxe6 fxe6 23. Rxe6 Rad8 24. b3 Ne5 25. Nb5 Nf7 26. Re7 a6 27. Nd4 Ng5+ 28. Kg4 Rf7 29. Rae1 h6 30. h4 Nh7 31. R1e6 Nf6+ 32. Kh3 Rxe7 33. Rxe7 Rd7 34. Re6 Kf7 35. g4 Nd5 36. Kg3 Nc7 37. Re3 Re7 38. Rf3+ Kg7 39. h5 Re5 40. hxg6 Kxg6 41. Nf5 Nd5 42. Nxd6 b5 43. Nf5 Kg5 44. Nd6 Re3 45. Rxe3 Nxe3 46. Ne4+ Kg6 47. Nc5 a5 48. Nb7 a4 49. bxa4 bxa4 50. Nc5 Nc4 51. Nxa4 Nxa3 52. Nc3 Nc4 53. Ne4 Ne5 1/2-1/2

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2006.08.02"]
[Round "5"]
[White "Sieberg, Rolf"]
[Black "Holtmannspoetter, Thomas"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2004"]
[BlackElo "1719"]
[PlyCount "88"]
[EventDate "2006.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 Nf6 5. e5 Nd5 6. Nf3 Nc6 7. Bc4 Bb4+ 8. Bd2 Bxd2+ 9. Nbxd2 Nb6 10. Bd3 d6 11. exd6 Qxd6 12. 0-0 Nxd4 13. Ne4 Nxf3+ 14. Qxf3 Qe7 15. Rfd1 0-0 16. Nd6 Rd8 17. Nxc8 Raxc8 18. Be4 Rxd1+ 19. Rxd1 g6 20. Bxb7 Rc2 21. Rb1 Qc5 22. g3 Rc1+ 23. Rxc1 Qxc1+ 24. Kg2 Qxb2 25. a3 Nd5 26. Bc6 Qc3 27. Bxd5 Qc5 28. Bc6 Kg7 29. a4 e5 30. Bb5 Qe7 31. Qd5 g5 32. Qd7 Qc5 33. Qf5 Qd5+ 34. Kh3 h6 35. Bd3 Qd6 36. Be4 Kf8 37. Qc8+ Kg7 38. Qb7 Qd4 39. Qd5 Qa1 40. Qa5 Qd4 41. Qd5 Qa1 42. Bc2 Qf1+ 43. Qg2 g4+ 44. Kxg4 Qxg2 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2006.08.01"]
[Round "4"]
[White "Krebeck, Peter"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1901"]
[BlackElo "2004"]
[PlyCount "57"]
[EventDate "2006.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Bc4 Ne5 8. Be2 Qg6 9. 0-0 d6 10. Re1 Qxe4 11. Bg5 N5c6 12. Bb5 Qg6 13. Bxe7 Be6 14. Nxc6 bxc6 15. Bxc6+ Kxe7 16. Bxa8 Rxa8 17. Qf3 Re8 18. Nd2 Kf8 19. b4 Bb6 20. Nc4 Bxc4 21. Rxe8+ Kxe8 22. Qc6+ Kf8 23. Qxc4 Qc2 24. Qh4 f6 25. Qg3 Qb2 26. Re1 Qxa2 27. Qf3 Qd2 28. Qa8+ Kf7 29. Qe8# 1-0

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2006.07.30"]
[Round "3"]
[White "Sieberg, Rolf"]
[Black "Stanescu, Christian"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2004"]
[BlackElo "2127"]
[PlyCount "92"]
[EventDate "2006.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 g6 6. Nf3 Bg7 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. Be3 0-0 10. Qd2 Nc6 11. Bh6 Qg4 12. 0-0 Nxe4 13. Nxe4 Qxe4 14. Bxg7 Kxg7 15. d5 Ne5 16. Nxe5 Qxe5 17. Rfe1 Qf6 18. Re3 Rac8 19. Rae1 Rc4 20. Rxe7 Rd4 21. Qc3 Rxd5 22. Qxf6+ Kxf6 23. Rxb7 Re8 24. Kf1 Rxe1+ 25. Kxe1 a5 26. Ke2 Ke6 27. g3 h5 28. h4 f6 29. b4 g5 30. b5 Rd4 31. hxg5 fxg5 32. Rh7 h4 33. b6 Ra4 34. gxh4 gxh4 35. a3 Rxa3 36. Rxh4 Kd7 37. b7 Kc7 38. Rd4 Rb3 39. Rd5 a4 40. Ra5 a3 41. Ra6 Kxb7 42. Rxd6 a2 43. Rd7+ Kb6 44. Rd8 a1Q 45. Rb8+ Kc6 46. Rxb3 Qa2+ 0-1

[Event "Dortmund Sparkassen op-A"]
[Site "Dortmund"]
[Date "2006.07.28"]
[Round "1"]
[White "Heinzel, Olaf"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2384"]
[BlackElo "2004"]
[PlyCount "101"]
[EventDate "2006.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. e3 0-0 5. h3 d6 6. Be2 Nbd7 7. 0-0 Nd5 8. Bh2 f5 9. c4 N5f6 10. Nc3 c5 11. Ng5 Nb6 12. dxc5 dxc5 13. Nb5 Qxd1 14. Raxd1 Bd7 15. Nc7 Rad8 16. Nge6 Bxe6 17. Nxe6 Rxd1 18. Rxd1 Rc8 19. Nxg7 Kxg7 20. b3 Kf7 21. Bf3 Ne4 22. a4 Rc6 23. a5 Nc8 24. Bxe4 fxe4 25. Rd7 Ra6 26. Rxb7 Rxa5 27. g4 Ra3 28. Rc7 Nb6 29. Bd6 Rxb3 30. Rxe7+ Kg8 31. Rxe4 Rc3 32. Bxc5 Nxc4 33. Re8+ Kf7 34. Re7+ Kg8 35. Bxa7 Nd2 36. Kg2 Nb3 37. Rd7 Rc2 38. Kg3 Nc5 39. Bxc5 Rxc5 40. h4 Rc2 41. e4 Re2 42. f3 Re1 43. Kf4 Rf1 44. e5 h6 45. h5 gxh5 46. gxh5 Rh1 47. Kg4 Rg1+ 48. Kf5 Rg5+ 49. Kf6 Rxh5 50. e6 Rh3 51. Rd3 1-0

[Event "Ruhrgebiet VK3 0405"]
[Site "Ruhrgebiet"]
[Date "2005.04.10"]
[Round "9.7"]
[White "Euting, Werner"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "1842"]
[BlackElo "1732"]
[PlyCount "54"]
[EventDate "2004.09.12"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]
[WhiteTeam "Essen Borbeck II"]
[BlackTeam "Witten"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 0-0 5. h3 d6 6. Be2 Nbd7 7. c3 c5 8. Nbd2 b6 9. 0-0 Bb7 10. a4 a5 11. Qc2 Qc7 12. Rac1 cxd4 13. exd4 Rac8 14. Rfe1 Rfe8 15. Bb5 Bc6 16. Qb3 Bxb5 17. axb5 Qb7 18. Ng5 Qd5 19. Qxd5 Nxd5 20. Bg3 Bh6 21. h4 N7f6 22. Re2 Nh5 23. Rce1 Nxg3 24. fxg3 Bxg5 25. hxg5 e6 26. Ne4 Red8 27. Nf6+ Nxf6 1/2-1/2

[Event "Ruhrgebiet VK3 0405"]
[Site "Ruhrgebiet"]
[Date "2005.03.13"]
[Round "8.7"]
[White "Sieberg, Rolf"]
[Black "Lindenmaier, Reinhard"]
[Result "0-1"]
[ECO "B05"]
[WhiteElo "1732"]
[BlackElo "2046"]
[PlyCount "132"]
[EventDate "2004.09.12"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]
[WhiteTeam "Witten"]
[BlackTeam "Wacker Bergeborbeck"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. c4 Nb6 8. h3 Bh5 9. Nc3 0-0 10. Be3 Nc6 11. b3 d5 12. c5 Nd7 13. a3 f6 14. exf6 Bxf6 15. Ne5 Bxe2 16. Nxc6 Bxd1 17. Nxd8 Raxd8 18. Raxd1 c6 19. b4 e5 20. Rfe1 Rde8 21. Kf1 a5 22. dxe5 Bxe5 23. Bd4 Bxd4 24. Rxd4 axb4 25. axb4 Rxe1+ 26. Kxe1 Ne5 27. f3 Rxf3 28. Rxd5 Nd3+ 29. Ke2 Rf2+ 30. Kxd3 cxd5 31. Nxd5 Kf7 32. Ne3 Ke6 33. b5 h5 34. c6 bxc6 35. bxc6 Kd6 36. g4 hxg4 37. hxg4 g6 38. Nc4+ Kxc6 39. Ne5+ Kd6 40. Nxg6 Rg2 41. Nf4 Rxg4 42. Ne2 Ke5 43. Ke3 Ra4 44. Kd3 Rh4 45. Kc3 Kd5 46. Kd3 Rh3+ 47. Kd2 Rf3 48. Nc3+ Kc4 49. Ne2 Rd3+ 50. Kc2 Rd7 51. Nf4 Rd6 52. Ne2 Rd3 53. Nf4 Ra3 54. Kd2 Kd4 55. Ne2+ Kc4 56. Nf4 Kc5 57. Ne2 Rf3 58. Ng1 Ra3 59. Ne2 Kd5 60. Nf4+ Ke4 61. Ne6 Ra5 62. Kc3 Re5 63. Nd8 Kd5 64. Nf7 Rh5 65. Nd8 Rh7 66. Kb4 Rd7 0-1

[Event "Nettetal Chessgate op"]
[Site "Nettetal"]
[Date "2004.08.10"]
[Round "4"]
[White "Schuetze, Norman"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2092"]
[BlackElo "1645"]
[PlyCount "39"]
[EventDate "2004.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 d6 5. Ng5 Nxe4 6. Bxf7+ Ke7 7. Bd5 Nf6 8. Bxc6 bxc6 9. dxe5 Nd7 10. exd6+ cxd6 11. 0-0 Nf6 12. Re1+ Kd7 13. Nf7 Qb6 14. Nxh8 d5 15. Bf4 Bc5 16. Qe2 Ne4 17. Nd2 Ba6 18. Qg4+ Kd8 19. Nxe4 dxe4 20. Rad1+ 1-0

[Event "Nettetal Chessgate op"]
[Site "Nettetal"]
[Date "2004.08.09"]
[Round "3"]
[White "Sieberg, Rolf"]
[Black "Szobries, Harald"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1645"]
[BlackElo "1864"]
[PlyCount "109"]
[EventDate "2004.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 c6 6. Bc4 Bf5 7. 0-0 e6 8. Bd2 Qc7 9. Re1 Be7 10. h3 Nbd7 11. Nh4 Bg6 12. Nxg6 hxg6 13. Bg5 Nb6 14. Bd3 0-0-0 15. Ne2 Nbd5 16. a4 Ng4 17. Bxe7 Qh2+ 18. Kf1 Qh1+ 19. Ng1 Nh2+ 20. Ke2 Nxe7 21. Be4 f5 22. Bf3 Nxf3 23. Kxf3 Qh2 24. Rxe6 Nd5 25. Ne2 Rxh3+ 26. gxh3 Qxh3+ 27. Ng3 Qg4+ 28. Kg2 Nf4+ 29. Kf1 Qh3+ 30. Ke1 Nxe6 31. c3 f4 32. Ne2 g5 33. Rc1 Nc5 34. Rc2 Ne4 35. Ng1 Qg2 36. Nf3 Re8 37. Ne5 Qg1+ 38. Ke2 Qxf2+ 39. Kd3 Qe3+ 40. Kc4 Rxe5 41. dxe5 Qc5+ 42. Kb3 Qxe5 43. Qg4+ Kc7 44. Re2 Qd5+ 45. Kc2 Qc4 46. a5 Qa4+ 47. Kb1 Qd1+ 48. Ka2 Qd5+ 49. Kb1 Kd6 50. Re1 Qd3+ 51. Ka1 Ke5 52. Qxg5+ Ke6 53. Qg6+ Kd5 54. Qf5+ Kd6 55. Qxf4+ 1-0

[Event "Nettetal Chessgate op"]
[Site "Nettetal"]
[Date "2004.08.08"]
[Round "2"]
[White "Schoenwaelder, Bernd"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "2004"]
[BlackElo "1645"]
[PlyCount "69"]
[EventDate "2004.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. b4 Nf6 2. Bb2 g6 3. c4 Bg7 4. e3 d6 5. Nf3 0-0 6. d4 c5 7. bxc5 dxc5 8. Be2 cxd4 9. exd4 Nc6 10. 0-0 Bf5 11. d5 Na5 12. Nbd2 Rc8 13. Rc1 b6 14. Bc3 Nb7 15. Nd4 Bd7 16. Bf3 Nd6 17. Qe2 Nf5 18. Nxf5 Bxf5 19. g4 Bd7 20. Bb4 Re8 21. g5 Nh5 22. Bxh5 gxh5 23. Qxh5 Bf5 24. Rfe1 Qd7 25. Ne4 Qa4 26. Bc3 Rxc4 27. Bxg7 Bg6 28. Rxc4 Qxc4 29. Nf6+ Kxg7 30. Nxe8+ Kf8 31. Qe2 Qc5 32. Nf6 exf6 33. gxf6 Qc8 34. Qe7+ Kg8 35. Qe8+ 1-0

[Event "Nettetal Chessgate op"]
[Site "Nettetal"]
[Date "2004.08.07"]
[Round "1"]
[White "Sieberg, Rolf"]
[Black "Ruetten, Ingmar"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1645"]
[BlackElo "1815"]
[PlyCount "63"]
[EventDate "2004.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 Nc6 7. Nc3 Nxc3 8. bxc3 d6 9. Ba3 Qa5 10. Qb3 dxe5 11. Bxf8 Rxf8 12. Bb5 Bd7 13. 0-0 e4 14. Ng5 a6 15. Bxc6 Bxc6 16. Nxe6 Rg8 17. d5 Bxd5 18. Qxd5 Qxd5 19. Nc7+ Kf8 20. Nxd5 f5 21. Rab1 b5 22. f3 exf3 23. Rxf3 Kf7 24. Rxf5+ Ke6 25. Rbf1 Rac8 26. g4 Rc4 27. Re1+ Kd6 28. h3 g6 29. Rfe5 Rf8 30. R1e3 a5 31. Nb6 Rcf4 32. Re6+ 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.31"]
[Round "9"]
[White "Hellwig, Thomas"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "E95"]
[WhiteElo "1769"]
[BlackElo "1654"]
[PlyCount "171"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Nbd7 7. 0-0 e5 8. Re1 exd4 9. Nxd4 Nc5 10. Bf1 a5 11. h3 Ne6 12. Be3 Re8 13. Ndb5 Bd7 14. Rc1 Bxb5 15. cxb5 Nc5 16. f3 Nfd7 17. Qc2 Qh4 18. Bf2 Qg5 19. Nd5 Qd8 20. Rcd1 b6 21. b4 axb4 22. Nxb4 Qg5 23. Be3 Qh4 24. Bf2 Qg5 25. Nd5 Qd8 26. Bd4 Bxd4+ 27. Rxd4 Nf6 28. Nb4 Nfd7 29. Red1 Qg5 30. Nd5 Qd8 31. f4 Nf6 32. e5 Nxd5 33. Rxd5 Nb7 34. f5 Qc8 35. fxg6 hxg6 36. exd6 Nxd6 37. Bc4 Nxc4 38. Qxc4 Re7 39. Qc3 Re8 40. Rd7 Qb8 41. Qc4 Rf8 42. Rf1 Qe8 43. Rxc7 Ra3 44. Rc6 Rg3 45. Qf4 Ra3 46. Rxb6 Rxa2 47. Ra6 Rb2 48. Qc4 Qxb5 49. Rxg6+ Kh7 50. Rxf7+ Kxg6 51. Qxb5 Rxb5 52. Rxf8 Rb2 53. Kh2 Kg5 54. Rg8+ Kh4 55. Rg4+ Kh5 56. Rd4 Ra2 57. Rd3 Kh4 58. Re3 Rb2 59. Kg1 Ra2 60. Re4+ Kh5 61. Kf1 Rb2 62. Re2 Rb3 63. Kf2 Ra3 64. g3 Rb3 65. Kg2 Ra3 66. Re5+ Kh6 67. h4 Rb3 68. Kf2 Ra3 69. Re3 Ra4 70. Kf3 Kh5 71. Re5+ Kh6 72. g4 Rb4 73. Re6+ Kh7 74. h5 Ra4 75. Re4 Ra5 76. Kf4 Kh6 77. Re3 Kh7 78. g5 Rb5 79. Re7+ Kh8 80. Re5 Rb1 81. Kf5 Kh7 82. Re7+ Kh8 83. Kf6 Rb6+ 84. Re6 Rb5 85. Re8+ Kh7 86. g6+ 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.30"]
[Round "8"]
[White "Sieberg, Rolf"]
[Black "Gueine, Felix B"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1654"]
[BlackElo "1814"]
[PlyCount "30"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Na3 Nc6 6. Nb5 Qd8 7. Bf4 e5 8. dxe5 Be6 9. Qxd8+ Rxd8 10. Nc7+ Ke7 11. Nxe6 Kxe6 12. Bc4+ Kf5 13. Ne2 Nxe5 14. Bxe5 Kxe5 15. Bxf7 Nh6 1/2-1/2

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.29"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Schoettler, Katharina"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1654"]
[BlackElo "1587"]
[PlyCount "146"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. d3 Bxc3+ 5. bxc3 d6 6. Be2 h6 7. 0-0 0-0 8. h3 Re8 9. Nh2 b6 10. f4 Bb7 11. Ng4 Nbd7 12. fxe5 Nxg4 13. Bxg4 Nxe5 14. Bh5 Rf8 15. Be3 Qe7 16. Qd2 Qh4 17. Be2 d5 18. Rf4 Qe7 19. exd5 Bxd5 20. c4 Be6 21. Raf1 Rad8 22. Re4 Ng6 23. Bh5 Nh8 24. Bf2 Qa3 25. Bd4 Qd6 26. Be3 f6 27. Re1 Bf7 28. Bf3 Rde8 29. Rd4 Qa3 30. Rg4 Bh5 31. Rxg7+ Kxg7 32. Bxh6+ Kg8 33. Bxf8 Qxf8 34. Bxh5 Rxe1+ 35. Qxe1 Qc5+ 36. Qf2 Qxh5 37. Qxf6 Qd1+ 38. Kh2 Qxc2 39. Qd8+ Kg7 40. Qxc7+ Nf7 41. Qxa7 Qxd3 42. Qxb6 Qxc4 43. Qb3 Qe4 44. a4 Ne5 45. a5 Kf6 46. a6 Qf4+ 47. Qg3 Qd4 48. Qe1 Qf4+ 49. Kg1 Qa4 50. Qf2+ Ke6 51. a7 Nc6 52. Qe3+ Kd7 53. Qd3+ Kc7 54. Qg3+ Kb7 55. Qg7+ Kb6 56. Qd7 Qa1+ 57. Kh2 Nxa7 58. h4 Qe5+ 59. Kh3 Nc6 60. g3 Kc5 61. Qg4 Qc3 62. h5 Qe1 63. Qf4 Qh1+ 64. Kg4 Qd1+ 65. Qf3 Ne5+ 66. Kf5 Nxf3 67. h6 Qd3+ 68. Kf6 Qd4+ 69. Kf7 Ng5+ 70. Kg6 Qe4+ 71. Kxg5 Qh7 72. g4 Kd6 73. Kh5 Qf7+ 1/2-1/2

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.28"]
[Round "6"]
[White "Madalinski, Jakob"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1472"]
[BlackElo "1654"]
[PlyCount "74"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. e3 0-0 5. c4 d6 6. Nc3 c5 7. Bd3 Nbd7 8. h3 cxd4 9. exd4 Nh5 10. Bh2 Qb6 11. Qb3 Bxd4 12. Qxb6 Bxb6 13. 0-0 Nc5 14. Bc2 Nf6 15. Rfe1 Re8 16. Re2 Bd7 17. a3 Ne6 18. Rd1 Bc6 19. Nd5 Nxd5 20. cxd5 Bb5 21. Re4 Nc5 22. Rf4 Rac8 23. Ng5 f6 24. Nf3 Ne6 25. dxe6 Rxc2 26. Nd4 Bxd4 27. Rfxd4 Rxb2 28. Bf4 Rc8 29. Be3 Ra2 30. Rb4 a6 31. Rbb1 Rxa3 32. Rdc1 Rac3 33. Re1 Rc2 34. Rb4 R8c4 35. Rbb1 Re4 36. Rbc1 Rxc1 37. Rxc1 Bc6 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.27"]
[Round "5"]
[White "Sieberg, Rolf"]
[Black "Daebel, Hasso"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1654"]
[BlackElo "1457"]
[PlyCount "75"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 Nf6 5. e5 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 Nd5 8. Nf3 Nc6 9. Bd3 Qa5 10. 0-0 Qxd2 11. Nbxd2 Nf4 12. Bb5 a6 13. Bxc6 dxc6 14. Ne4 Ke7 15. Nd6 Rd8 16. Rfd1 h6 17. g3 Nd5 18. Rac1 Rb8 19. Nd2 Bd7 20. N2e4 b6 21. Rd3 f5 22. Nc3 Nc7 23. Ne2 b5 24. Nf4 Be8 25. Nxe8 Kxe8 26. Rxc6 Kd7 27. Rxc7+ Kxc7 28. Nxe6+ Kd7 29. Nxd8 Rxd8 30. f4 Rc8 31. Rc3 Re8 32. d5 g5 33. Rc6 h5 34. Rxa6 Rc8 35. Rc6 g4 36. Rxc8 Kxc8 37. Kf2 Kd7 38. Ke3 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.26"]
[Round "4"]
[White "Seelhoefer, Tim"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "1372"]
[BlackElo "1654"]
[PlyCount "57"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Bg5 h6 6. Nxc6 bxc6 7. Bxf6 Qxf6 8. Nc3 Bb4 9. Qd2 0-0 10. Bd3 d5 11. a3 Ba5 12. b4 Bb6 13. 0-0 Bb7 14. Rad1 Rad8 15. exd5 cxd5 16. Be2 Rfe8 17. a4 d4 18. Nb5 a6 19. a5 axb5 20. axb6 Qxb6 21. Qd3 Re5 22. c3 Rg5 23. Bf3 Bxf3 24. Qxf3 Rgd5 25. Rfe1 Qd6 26. Qg4 dxc3 27. Rxd5 Qxd5 28. h3 c2 29. Rc1 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.25"]
[Round "3"]
[White "Sieberg, Rolf"]
[Black "Wolkow, Michael"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1654"]
[BlackElo "1545"]
[PlyCount "62"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. Bc4 Nb6 7. Bb3 e6 8. cxd4 d6 9. 0-0 a6 10. Nc3 h6 11. Be3 Qc7 12. exd6 Bxd6 13. d5 exd5 14. Bxd5 Ne5 15. Nxe5 Bxe5 16. Bxf7+ Kxf7 17. Qb3+ Nc4 18. Nd5 Qc6 19. Nb6 Be6 20. Nxa8 Nd2 21. Qb4 Nxf1 22. Rc1 Qb5 23. Qe4 Nxe3 24. Nc7 Rc8 25. fxe3 Rxc7 26. Qf3+ Ke7 27. Rf1 Bf6 28. Qg3 Qe5 29. Qf3 Bd5 30. Qf2 Qxb2 31. Qf4 Qxg2# 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.24"]
[Round "2"]
[White "Zeldin, Vitali"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "1872"]
[BlackElo "1654"]
[PlyCount "61"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. a4 Bb7 9. c3 d6 10. d4 exd4 11. cxd4 h6 12. Nbd2 Qd7 13. h3 Nb4 14. Re3 c5 15. d5 c4 16. Bc2 Nxc2 17. Qxc2 Rfe8 18. Nd4 Nh7 19. f4 Bf6 20. N2f3 Bxd4 21. Nxd4 Bxd5 22. exd5 Nf6 23. axb5 axb5 24. Rxa8 Rxa8 25. Kh2 Nxd5 26. Qe4 Ra1 27. Qxd5 Rxc1 28. Nf5 Qa7 29. Re7 Qg1+ 30. Kg3 Kh7 31. Qxf7 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.23"]
[Round "1"]
[White "Sieberg, Rolf"]
[Black "Schultz, Hauke"]
[Result "1-0"]
[ECO "C79"]
[WhiteElo "1654"]
[BlackElo "1227"]
[PlyCount "67"]
[EventDate "2004.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Nf6 5. d3 a6 6. Ba4 Be6 7. Ng5 Qd7 8. Nxe6 Qxe6 9. Nc3 Qd7 10. h3 Be7 11. Be3 d5 12. Nxd5 Nxd5 13. exd5 Qxd5 14. Qg4 g6 15. Bh6 f5 16. Qe2 Bf6 17. c3 0-0-0 18. Rfd1 Qd6 19. b4 g5 20. b5 axb5 21. Bxb5 Qc5 22. d4 Qxc3 23. Rac1 Qb4 24. Bxc6 bxc6 25. Rxc6 Be7 26. Qxe5 Bd6 27. Qxf5+ Kb7 28. d5 Rhe8 29. Qb1 Qxb1 30. Rxb1+ Ka7 31. Rc4 Re1+ 32. Rxe1 Rb8 33. Ra4+ Kb7 34. Rb1+ 1-0

[Event "Solingen-ch"]
[Site "Solingen"]
[Date "2004.05.31"]
[Round "6"]
[White "Fimmers, Heinrich"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "E61"]
[PlyCount "76"]
[EventDate "2004.05.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. e3 d6 6. Be2 Nbd7 7. 0-0 e5 8. Qc2 exd4 9. exd4 c5 10. Bg5 Qb6 11. d5 Nh5 12. Rab1 Ne5 13. Nxe5 Bxe5 14. Bxh5 Bf5 15. Ne4 gxh5 16. Nf6+ Bxf6 17. Qxf5 Be5 18. Bh6 Rfe8 19. Qxh5 Qc7 20. Rfe1 Bxb2 21. Re3 Rxe3 22. Qg4+ Kh8 23. fxe3 Rg8 24. Qf5 Be5 25. Bg5 Rg6 26. Rf1 f6 27. Bf4 Qg7 28. Rf2 Qe7 29. Bxe5 Qxe5 30. Qxe5 fxe5 31. Rf7 Rg7 32. Rf6 Rd7 33. Kf2 Kg7 34. Rf3 a6 35. e4 b5 36. Rc3 Rb7 37. cxb5 Rxb5 38. Rc2 a5 0-1

[Event "Solingen-ch"]
[Site "Solingen"]
[Date "2004.05.31"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Sokalskaja, Elena"]
[Result "1-0"]
[ECO "B12"]
[BlackElo "2230"]
[PlyCount "37"]
[EventDate "2004.05.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. 0-0 Nc6 7. c3 Qb6 8. b3 Rc8 9. Be3 cxd4 10. cxd4 Nge7 11. Nc3 Nxe5 12. dxe5 Qa5 13. Bb5+ Nc6 14. Bxc6+ Rxc6 15. Ne2 Bc2 16. Qd2 Bb4 17. Qd4 a6 18. Bd2 Qb5 19. Qxb4 1-0

[Event "Solingen-ch"]
[Site "Solingen"]
[Date "2004.05.30"]
[Round "4"]
[White "Leder, Phillip"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "C58"]
[PlyCount "42"]
[EventDate "2004.05.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. d3 h6 7. Nf3 e4 8. Nfd2 Nxc4 9. dxc4 Bc5 10. Nc3 Bg4 11. f3 exf3 12. Nxf3 0-0 13. Ne2 Re8 14. h3 Bxf3 15. gxf3 Qd6 16. Kf1 Nh5 17. f4 Rxe2 18. Kxe2 Ng3+ 19. Kd3 Qg6+ 20. Kd2 Ne4+ 21. Ke2 Qg2+ 0-1

[Event "Solingen-ch"]
[Site "Solingen"]
[Date "2004.05.30"]
[Round "5"]
[White "Sieberg, Rolf"]
[Black "Boehm, Heinz D"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "39"]
[EventDate "2004.05.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. Nf3 d6 4. d4 a6 5. Bc4 Bg4 6. Bxf7+ Kd7 7. d5 Ne5 8. Nxe5+ dxe5 9. Qxg4+ Kc7 10. Qe6 Nf6 11. Qxe5+ Qd6 12. Bf4 Rd8 13. Nd2 b5 14. Qf5 g6 15. Bxd6+ exd6 16. Qxf6 Bh6 17. e5 dxe5 18. Qxa6 Rhf8 19. Ne4 b4 20. Qa7+ 1-0

[Event "Solingen-ch"]
[Site "Solingen"]
[Date "2004.05.29"]
[Round "2"]
[White "Moeller, David"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "E97"]
[WhiteElo "2176"]
[PlyCount "83"]
[EventDate "2004.05.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. e4 d6 6. Be2 Nbd7 7. 0-0 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Qxd8 Rxd8 11. Bg5 h6 12. Bxf6 Bxf6 13. Nd5 Bg7 14. Nxc7 Rb8 15. Nd5 Be6 16. b3 f5 17. f3 Rd7 18. Rad1 Rf8 19. g3 Bxd5 20. cxd5 Rc8 21. Bc4 a6 22. a4 Bf8 23. d6+ Kg7 24. Be6 Rcd8 25. Bxd7 Rxd7 26. Rd5 Kf6 27. exf5 gxf5 28. Re1 Bxd6 29. Rexe5 Bxe5 30. Rxd7 b6 31. f4 Bc3 32. Rd6+ Kg7 33. Kg2 Ba5 34. Rd7+ Kf6 35. Ra7 Ke6 36. Kf3 Kd5 37. Ke3 Kc5 38. Kd3 Be1 39. Rh7 b5 40. axb5 axb5 41. Rxh6 Kd5 42. Rf6 1-0

[Event "Solingen-ch"]
[Site "Solingen"]
[Date "2004.05.28"]
[Round "1"]
[White "Sieberg, Rolf"]
[Black "Kniest, Oliver"]
[Result "0-1"]
[ECO "C78"]
[BlackElo "2297"]
[PlyCount "70"]
[EventDate "2004.05.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bb7 7. Re1 Bc5 8. c3 d6 9. d4 Bb6 10. Bg5 h6 11. Bxf6 Qxf6 12. dxe5 dxe5 13. Nbd2 g5 14. Re2 0-0-0 15. Bd5 Kb8 16. a4 g4 17. Ne1 Na5 18. Bxb7 Kxb7 19. Qc2 h5 20. axb5 axb5 21. c4 Qc6 22. cxb5 Qxb5 23. Nf1 Nb3 24. Rd1 Nd4 25. Rxd4 Rxd4 26. Re3 Rc4 27. Rc3 Rxc3 28. bxc3 Rd8 29. g3 Qc4 30. Ne3 Bxe3 31. fxe3 Ra8 32. Nd3 Ra1+ 33. Nc1 Qb5 34. Qd2 Qb1 35. Qd5+ Kc8 0-1

[Event "Recklinghausen op 14th"]
[Site "Recklinghausen"]
[Date "2003.08.24"]
[Round "7"]
[White "Kuehneweg, Christian"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "B13"]
[PlyCount "78"]
[EventDate "2003.08.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 c5 5. c3 cxd4 6. exd4 0-0 7. 0-0 d5 8. Bf4 Nc6 9. Nbd2 Bg4 10. h3 Bd7 11. Re1 Re8 12. Re2 Qc8 13. Qf1 Bf5 14. Re3 Nh5 15. Bh2 Bh6 16. Ree1 Nf4 17. Bxf5 Qxf5 18. Bxf4 Bxf4 19. Nb3 Bd6 20. Rad1 Qf4 21. Qd3 e6 22. Re3 Ne7 23. g3 Qh6 24. Kg2 Rad8 25. Nh2 Nf5 26. Re2 Qg5 27. Ng4 h5 28. f4 Qe7 29. Ne3 Nxe3+ 30. Qxe3 Qf6 31. Nd2 h4 32. Rf1 hxg3 33. Qxg3 Kg7 34. Rf3 Rh8 35. Kf2 Rh4 36. Ke3 Rdh8 37. Rh2 Qf5 38. Nf1 Qe4+ 39. Kf2 Bxf4 0-1

[Event "Recklinghausen op 14th"]
[Site "Recklinghausen"]
[Date "2003.08.23"]
[Round "6"]
[White "Sieberg, Rolf"]
[Black "Zwielich, Frank"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "55"]
[EventDate "2003.08.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nd7 4. Nf3 g6 5. Bd3 Bg7 6. Be3 Qc7 7. Qd2 a6 8. 0-0 Ngf6 9. Bh6 0-0 10. Bxg7 Kxg7 11. Re1 e5 12. dxe5 dxe5 13. Qg5 h6 14. Qe3 b5 15. Nbd2 c4 16. Bc2 Bb7 17. Nh4 Nc5 18. Qg3 Rad8 19. Nf5+ Kh7 20. Qh4 gxf5 21. Qxf6 Rxd2 22. Qxf5+ Kg7 23. Qg4+ Kh8 24. Qh5 Qd6 25. Rad1 Rxd1 26. Rxd1 Qf6 27. f3 Rg8 28. Qh3 0-1

[Event "Recklinghausen op 14th"]
[Site "Recklinghausen"]
[Date "2003.08.22"]
[Round "5"]
[White "Rehberg, Raphael"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2051"]
[PlyCount "51"]
[EventDate "2003.08.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 d6 6. Bc4 Qf6 7. Qd3 Be6 8. Bxe6 Qxe6 9. Qb5+ c6 10. Qxb7 Qxe4+ 11. Be3 Rd8 12. 0-0 Rd7 13. Qb8+ Rd8 14. Qxa7 Qxc2 15. Re1 Be7 16. Bb6 Rc8 17. Nc3 Qf5 18. Ne4 Qd7 19. Qa6 Kf8 20. Rad1 Nf6 21. Nxd6 Bxd6 22. Rxd6 Qf5 23. Qb7 c5 24. Qe7+ Kg8 25. Rd8+ Rxd8 26. Qxd8+ 1-0

[Event "Recklinghausen op 14th"]
[Site "Recklinghausen"]
[Date "2003.08.21"]
[Round "4"]
[White "Sieberg, Rolf"]
[Black "Dicks, Friedrich"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "45"]
[EventDate "2003.08.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. h3 Bh5 6. Be2 b5 7. a3 Nbd7 8. 0-0 a5 9. e5 dxe5 10. dxe5 Bxf3 11. Bxf3 Nxe5 12. Qe2 Nxf3+ 13. Qxf3 Rc8 14. Bg5 Nd7 15. Rad1 f6 16. Bh4 Qc7 17. Rfe1 Ne5 18. Qf5 Nc4 19. Ne4 e5 20. Qe6+ Be7 21. b3 f5 22. Bxe7 Qxe7 23. Qxc8+ 1-0

[Event "Recklinghausen op 14th"]
[Site "Recklinghausen"]
[Date "2003.08.20"]
[Round "3"]
[White "Pastor, Alexandre"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "A45"]
[PlyCount "30"]
[EventDate "2003.08.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 g6 3. Bg5 Bg7 4. Bxf6 Bxf6 5. Nf3 0-0 6. e3 d6 7. Bc4 Nd7 8. 0-0 c5 9. d5 Nb6 10. Qd3 Bg4 11. Qe2 Bxf3 12. gxf3 Qd7 13. e4 Be5 14. Bb5 Qh3 15. Qe3 Qxh2# 0-1

[Event "Recklinghausen op 14th"]
[Site "Recklinghausen"]
[Date "2003.08.19"]
[Round "2"]
[White "Sieberg, Rolf"]
[Black "Angermuende, Dirk"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "1995"]
[PlyCount "34"]
[EventDate "2003.08.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nf3 Ne7 6. 0-0 0-0 7. Bxh7+ Kxh7 8. Ng5+ Kg6 9. h4 Rh8 10. h5+ Rxh5 11. Nxf7 Bh2+ 12. Kh1 Qf8 13. g4 Rh4 14. Ng5 Bf4+ 15. Nh3 Rxh3+ 16. Kg1 Qh8 17. Bxf4 Rh1+ 0-1

[Event "Recklinghausen op 14th"]
[Site "Recklinghausen"]
[Date "2003.08.18"]
[Round "1"]
[White "Servaty, Rudolf"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "E74"]
[WhiteElo "2153"]
[PlyCount "97"]
[EventDate "2003.08.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Bg5 Nbd7 7. Qd2 c5 8. d5 Ne8 9. h4 Ne5 10. f3 f5 11. h5 gxh5 12. Nh3 fxe4 13. Nxe4 Bf5 14. Nf4 Nf6 15. Bxf6 Bxf6 16. Nxf6+ Rxf6 17. Nxh5 Rg6 18. g4 Bd7 19. 0-0-0 Qb6 20. Rdg1 Qa6 21. b3 b5 22. f4 Nxg4 23. cxb5 Qa3+ 24. Kb1 Bf5+ 25. Bd3 Qb4 26. Qc2 Bxd3 27. Qxd3 Qd4 28. Qxd4 cxd4 29. f5 Rg5 30. Rh4 Kf7 31. Rgxg4 Rxf5 32. Rg7+ Kf8 33. Rxh7 Rf1+ 34. Kb2 Rf2+ 35. Ka3 Kg8 36. Rg7+ Kf8 37. Rxd4 a5 38. Rg5 Rc8 39. Rf4+ Rxf4 40. Nxf4 Kf7 41. Ka4 Rc2 42. a3 Rc3 43. Rf5+ Ke8 44. Ne6 Kd7 45. b6 Kc8 46. Kxa5 Rxb3 47. Rf8+ Kb7 48. Nd8+ Kb8 49. Nc6+ 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.10"]
[Round "9"]
[White "Sieberg, Rolf"]
[Black "Singh, Marcel"]
[Result "0-1"]
[ECO "B04"]
[WhiteElo "1667"]
[BlackElo "1552"]
[PlyCount "66"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. dxe5 Bg4 6. Be2 e6 7. h3 Bh5 8. 0-0 Be7 9. Nd4 Bxe2 10. Qxe2 0-0 11. b3 Nf4 12. Qe4 Qxd4 13. Qxb7 Ne2+ 14. Kh1 Qxa1 15. Bd2 Nd7 16. Qb5 Qxe5 17. Qxd7 Qd6 18. Qb5 Nd4 19. Qc4 Qc5 20. Qd3 Rfd8 21. c4 Qf5 22. Qe3 h6 23. Qg3 Bd6 24. Qh4 Qe5 25. f4 Qf6 26. Qg4 Nf5 27. Nc3 Qh4 28. Ne4 Qxg4 29. hxg4 Ne7 30. f5 exf5 31. gxf5 f6 32. g4 Nc6 33. Kg2 a5 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.09"]
[Round "8"]
[White "Sennholz, Michael"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "C59"]
[WhiteElo "1359"]
[BlackElo "1667"]
[PlyCount "50"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Be2 h6 9. Nf3 e4 10. Ne5 Bd6 11. d4 0-0 12. Bf4 Nd5 13. Bg3 f5 14. h3 f4 15. Bh2 Bxe5 16. dxe5 Qg5 17. Rg1 Qxe5 18. c3 Be6 19. Qa4 Nb6 20. Qc2 Rad8 21. Nd2 e3 22. Nf3 exf2+ 23. Kxf2 Qe3+ 24. Kf1 Nac4 25. Bxc4 Bxc4+ 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.08"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Peutz, Arne"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1667"]
[BlackElo "1486"]
[PlyCount "94"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Bd3 Bxd3 6. Qxd3 Qa5+ 7. c3 Qa6 8. Qxa6 Nxa6 9. Be3 c5 10. 0-0 cxd4 11. cxd4 Ne7 12. Nc3 Nc7 13. Rac1 Nc6 14. a3 Be7 15. Na4 Rc8 16. b4 Nb5 17. Ra1 0-0 18. Nc5 b6 19. Nd3 Nc3 20. Rfe1 Ne4 21. Rac1 Nb8 22. h3 Nd7 23. Nh2 Bg5 24. Bxg5 Nxg5 25. f3 h6 26. Nf4 Rc4 27. Rxc4 dxc4 28. h4 Nh7 29. Ng4 b5 30. Rc1 Nb6 31. Ne3 Rd8 32. Nc2 Nf8 33. Kf2 Nfd7 34. Ne3 Nb8 35. Rd1 Nc6 36. Ne2 a6 37. f4 Na4 38. d5 exd5 39. Nxd5 Kf8 40. Ke3 Nb2 41. Rd2 c3 42. Rc2 Rxd5 43. Nxc3 Nc4+ 44. Ke4 Rd4+ 45. Kf5 Ne7+ 46. Kg4 Ne3+ 47. Kf3 Nxc2 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.07"]
[Round "6"]
[White "Voigtlaender, Wolfgang"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1593"]
[BlackElo "1667"]
[PlyCount "41"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 Be7 5. d4 Nxe4 6. Bxf7+ Kxf7 7. Nxe4 d5 8. Neg5+ Ke8 9. dxe5 Nxe5 10. Nxe5 Bxg5 11. Qh5+ g6 12. Qxg5 Qd6 13. 0-0 Bf5 14. Re1 Kf8 15. Bf4 Qb6 16. Qh6+ Kg8 17. g4 Bxc2 18. Rac1 Qxb2 19. Nd7 Be4 20. Be5 Qb5 21. Qg7# 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.06"]
[Round "5"]
[White "Jungbluth, Michael"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "1844"]
[BlackElo "1667"]
[PlyCount "117"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 Nbd7 7. 0-0 c5 8. d5 Ne8 9. Be3 Ne5 10. Nd2 f5 11. f4 Nf7 12. Bd3 fxe4 13. Bxe4 Nh6 14. Qc2 Bf5 15. Rae1 Nf6 16. Bxf5 Nxf5 17. h3 Nxe3 18. Rxe3 Rf7 19. Kh1 Qd7 20. Nf3 Nh5 21. Ng5 Rxf4 22. Rxf4 Nxf4 23. Rf3 Rf8 24. Qe4 Be5 25. Ne2 Qf5 26. Nxf4 Qxe4 27. Nxe4 Rxf4 28. Rxf4 Bxf4 29. g3 Be5 30. b3 h6 31. Kg2 Kf7 32. Kf3 e6 33. Nf2 exd5 34. cxd5 a5 35. a4 h5 36. Ne4 Ke7 37. Nd2 Bc3 38. Nc4 Be1 39. g4 hxg4+ 40. hxg4 Kf6 41. Kf4 g5+ 42. Ke4 Bb4 43. Nxd6 Ke7 44. Nc4 Kf6 45. Nd6 Ke7 46. Nf5+ Kd7 47. Kd3 Kc7 48. Kc4 Kb6 49. Nd6 Bd2 50. Kd3 Bf4 51. Nc4+ Ka6 52. d6 b5 53. axb5+ Kxb5 54. d7 Bc7 55. Ne5 a4 56. bxa4+ Kxa4 57. Kc4 Ka3 58. Nf7 Bb6 59. Nxg5 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.04"]
[Round "4"]
[White "Sieberg, Rolf"]
[Black "Mijatovic, Mijo"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1667"]
[BlackElo "1849"]
[PlyCount "39"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d6 5. Nf3 g6 6. Be3 Bg7 7. Be2 Bd7 8. Nc3 a6 9. Qd2 Rc8 10. 0-0 Na5 11. b3 Nc6 12. Rac1 h5 13. h3 e6 14. d5 Ne5 15. dxe6 Nxf3+ 16. Bxf3 Bxe6 17. Nd5 Bh6 18. Rxc8 Bxc8 19. Bxh6 Rxh6 20. Rc1 1/2-1/2

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.03"]
[Round "3"]
[White "Sieberg, Rolf"]
[Black "Seifert, Christopher"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1667"]
[BlackElo "1476"]
[PlyCount "85"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. 0-0 Nxd4 9. Nxd4 Qxd4 10. Nc3 a6 11. Re1 Ne7 12. Kh1 Ng6 13. Bxg6 Qxd1 14. Bxf7+ Kxf7 15. Rxd1 Bc5 16. Ne2 Rac8 17. Nd4 Rc7 18. Be3 Rhc8 19. Rac1 Bxd4 20. Rxc7 Rxc7 21. Bxd4 Rc2 22. g3 Ke7 23. Kg2 Be8 24. Kf3 Bg6 25. Ke3 Kd7 26. Bc3 Rxc3+ 27. bxc3 Kc6 28. Rd4 b5 29. Rd2 Be4 30. Rb2 Bf5 31. Rb4 a5 32. Rb2 Be4 33. a3 Bf5 34. Ra2 Bb1 35. Ra1 Bc2 36. h4 a4 37. g4 g6 38. f4 Be4 39. h5 Bf3 40. hxg6 hxg6 41. g5 Bg4 42. Rh1 Bf5 43. Rh8 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.02"]
[Round "2"]
[White "Calder, Dennis"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1828"]
[BlackElo "1667"]
[PlyCount "39"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 g5 5. Bc1 Qa5+ 6. c3 Nf6 7. Bxg5 Qb6 8. Bxf6 Qxf6 9. dxc5 e6 10. Qd4 Qg5 11. Qxh8 Qc1+ 12. Kf2 Qxb2 13. Nd2 Qxa1 14. Ne4 Nc6 15. Nf6+ Ke7 16. Nxh7 Bh6 17. Qf6+ Ke8 18. Qxh6 d5 19. Qf8+ Kd7 20. Qd6+ 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2003.08.01"]
[Round "1"]
[White "Sieberg, Rolf"]
[Black "Milonas, Georgios"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1667"]
[BlackElo "1247"]
[PlyCount "43"]
[EventDate "2003.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 g6 6. Nf3 Bg7 7. Be2 0-0 8. 0-0 Nc6 9. h3 Bd7 10. Be3 Qc7 11. Qd2 Na5 12. Rac1 Qd8 13. Bh6 Nc6 14. Bxg7 Kxg7 15. Qf4 Re8 16. e5 Nh5 17. Qh2 dxe5 18. dxe5 Kg8 19. Ng5 Nd4 20. Bxh5 gxh5 21. Qf4 Ne6 22. Qxf7+ 1-0

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2002.10.23"]
[Round "1"]
[White "Bartel, Mario"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "2236"]
[BlackElo "1700"]
[PlyCount "60"]
[EventDate "2002.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. Bxd5 cxd5 13. d4 Bd6 14. Re1 Qh4 15. g3 Qh3 16. Qf3 Bg4 17. Qg2 Qh5 18. f4 Rae8 19. Be3 Bxf4 20. gxf4 Re6 21. Kf2 Rg6 22. Nd2 Bh3 23. Qf3 Bg4 24. Qh1 Qh4+ 25. Kf1 Bh3+ 26. Ke2 Bg2 27. Qg1 Qh5+ 28. Kf2 Qh4+ 29. Ke2 Qh5+ 30. Kf2 Qh4+ 1/2-1/2

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.12.17"]
[Round "9"]
[White "Mrowetz, Josef"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1276"]
[BlackElo "1681"]
[PlyCount "80"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. Nh3 Nf6 2. g3 d5 3. f4 g6 4. Bg2 Bg7 5. 0-0 Bf5 6. Nf2 0-0 7. d4 Qd7 8. h3 Ne4 9. Kh2 Nc6 10. c3 Qd6 11. Nd2 Nxf2 12. Rxf2 Bd7 13. e4 dxe4 14. Nxe4 Qe6 15. Bd2 Nb8 16. Nc5 Qb6 17. Bxb7 Bc6 18. Bxa8 Bxa8 19. b4 Rd8 20. Qg4 Nc6 21. Re1 e6 22. Rfe2 Ne7 23. Qh4 Qd6 24. f5 Nxf5 25. Qg4 Qd5 26. a4 Re8 27. Bf4 Bxd4 28. Rd2 Qc6 29. cxd4 Nxd4 30. Rf1 e5 31. Be3 f5 32. Qd1 Nf3+ 33. Rxf3 Qxf3 34. Qxf3 Bxf3 35. Rd7 Rc8 36. Re7 e4 37. Re6 c6 38. Re5 Rd8 39. Re6 Rd1 40. Rxc6 Rh1# 0-1

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.12.10"]
[Round "8"]
[White "Sieberg, Rolf"]
[Black "Wiegmann, Wilhelm"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1681"]
[BlackElo "1364"]
[PlyCount "82"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c6 2. c3 d5 3. exd5 cxd5 4. d4 Bf5 5. Nf3 e6 6. Bd3 Bxd3 7. Qxd3 Nf6 8. 0-0 Bd6 9. Re1 0-0 10. Bg5 Nbd7 11. Ne5 Qc7 12. Nxd7 Nxd7 13. Qh3 Rae8 14. Nd2 f6 15. Bh4 e5 16. Nf3 e4 17. Nd2 f5 18. Nf1 f4 19. Rac1 f3 20. Ne3 Nb6 21. Nf5 fxg2 22. Nxd6 Qxd6 23. b3 Re6 24. Re3 Rh6 25. Qg4 Rf4 26. Bg3 Rxg4 27. Bxd6 Rxd6 28. Rce1 Rh6 29. f3 Rgh4 30. fxe4 Rxh2 31. exd5 Nxd5 32. Re5 Nf6 33. R1e2 Rh1+ 34. Kxg2 R6h2+ 35. Kf3 Rh3+ 36. Kg2 h6 37. Re7 Nh5 38. Re8+ Kh7 39. R2e7 R1h2+ 40. Kg1 Nf4 41. Rxb7 Rg2+ 0-1

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.12.07"]
[Round "6"]
[White "Salin, Armin"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "E70"]
[WhiteElo "1649"]
[BlackElo "1681"]
[PlyCount "62"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Bd3 Nbd7 6. Nge2 0-0 7. 0-0 c5 8. d5 Ne5 9. f4 Nxd3 10. Qxd3 Ne8 11. Be3 f5 12. e5 dxe5 13. fxe5 Bxe5 14. Bxc5 b6 15. Bd4 Qc7 16. Bxe5 Qxe5 17. Rae1 Nd6 18. Nd4 Qf6 19. Ne6 Rf7 20. Rf2 Bxe6 21. Rxe6 Qg7 22. Rfe2 Rc8 23. b3 Nb7 24. Rc6 Rxc6 25. dxc6 Nd6 26. Nb5 Qa1+ 27. Kf2 Ne4+ 28. Ke3 Qg1+ 29. Kf3 Qxh2 30. Qd8+ Kg7 31. Qd4+ e5 0-1

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.12.04"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Muehlinghaus, Bernd"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "1681"]
[BlackElo "1778"]
[PlyCount "66"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Be2 d5 5. exd5 Nxd5 6. 0-0 Be7 7. Bd2 0-0 8. Nc3 Be6 9. a3 a6 10. Re1 f5 11. Nxd5 Bxd5 12. Bc3 Bd6 13. Bf1 Qf6 14. b4 Nd4 15. Nxd4 exd4 16. Bd2 f4 17. Qh5 c6 18. Rac1 g6 19. Qg4 Be5 20. Be2 Rae8 21. Qh3 h5 22. Bf1 Kg7 23. Be2 Be6 24. Qf3 Bg4 25. Qe4 Bd6 26. Qxe8 Rxe8 27. Bxg4 Rxe1+ 28. Rxe1 hxg4 29. Re4 Qf5 30. Bc1 f3 31. g3 Qh5 32. Kf1 Qxh2 33. Ke1 Qg1+ 0-1

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.11.19"]
[Round "5"]
[White "Volbracht, Michael"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "C65"]
[WhiteElo "1761"]
[BlackElo "1681"]
[PlyCount "86"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Nf6 6. Nxe5 Be7 7. Re1 0-0 8. d4 Re8 9. Nf3 Bg4 10. Nbd2 c5 11. d5 b5 12. c4 Nd7 13. Qc2 Bd6 14. b3 Ne5 15. Nxe5 Bxe5 16. Bb2 Qh4 17. Bxe5 Rxe5 18. Qc3 Rae8 19. Qg3 Qxg3 20. hxg3 f5 21. f4 R5e7 22. e5 b4 23. Kf2 a5 24. a4 Kf7 25. Rh1 h6 26. Nf1 h5 27. Ne3 g6 28. Nc2 g5 29. Ne1 gxf4 30. gxf4 Rg8 31. Nd3 Ke8 32. Nxc5 Rg6 33. e6 Reg7 34. Nb7 c6 35. Nxa5 Be2 36. Kxe2 Rxg2+ 37. Ke3 c5 38. Rh3 Rc2 39. Rd1 Rgg2 40. Kf3 Rgf2+ 41. Ke3 Rfe2+ 42. Kd3 Rg2 43. Ke3 Rge2+ 1/2-1/2

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.11.12"]
[Round "4"]
[White "Sieberg, Rolf"]
[Black "Gohla, Ulf"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1681"]
[BlackElo "1732"]
[PlyCount "112"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Bf5 5. d4 c6 6. Bd3 e6 7. Bxf5 Qxf5 8. 0-0 Nd7 9. Re1 0-0-0 10. a4 Ngf6 11. Be3 Nd5 12. Nxd5 exd5 13. Qe2 h6 14. c4 g5 15. cxd5 Qxd5 16. a5 a6 17. Rec1 Bd6 18. Qc4 Qxc4 19. Rxc4 Nf6 20. Ne5 Bxe5 21. dxe5 Nd5 22. Bd4 Rhe8 23. g3 Ne7 24. Re1 Ng6 25. f4 gxf4 26. gxf4 Nxf4 27. Bb6 Nd3 28. Rd1 Nxe5 29. Rxd8+ Rxd8 30. Re4 Re8 31. Kg2 Kd7 32. Rh4 Re6 33. Be3 Ng4 34. Rxg4 Rxe3 35. Rb4 Kc7 36. Kf2 Rh3 37. Kg2 Rd3 38. Rf4 Rd2+ 39. Kg3 Rxb2 40. Rxf7+ Kd6 41. Rf6+ Kc5 42. Rxh6 Kb4 43. h4 Kxa5 44. h5 Rd2 45. Re6 Rd8 46. h6 c5 47. h7 Rh8 48. Rh6 b5 49. Kf4 Kb4 50. Ke5 c4 51. Kf6 c3 52. Kg7 Rxh7+ 53. Kxh7 c2 54. Rc6 Kb3 55. Kg6 Kb2 56. Rxa6 c1Q 0-1

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.11.05"]
[Round "3"]
[White "Schumann, Burkhard"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1803"]
[BlackElo "1681"]
[PlyCount "79"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Nxc3 d6 6. Bc4 Nf6 7. Ng5 Ne5 8. Bb5+ Bd7 9. f4 Neg4 10. Be2 Be7 11. 0-0 c6 12. Qb3 Qb6+ 13. Qxb6 axb6 14. h3 Nh6 15. f5 d5 16. e5 Bc5+ 17. Kh1 Nxf5 18. Kh2 h6 19. Nxf7 Kxf7 20. exf6 gxf6 21. Bh5+ Kg7 22. Bf4 Bd6 23. Rae1 Bxf4+ 24. Rxf4 d4 25. Ne4 Ne3 26. Nxf6 Rhf8 27. Rxd4 Kxf6 28. Rxe3 Bf5 29. g4 Bg6 30. Rd6+ Kg7 31. Rxg6+ Kh7 32. Re7+ Kh8 33. Rxh6+ Kg8 34. Rhh7 Rf2+ 35. Kg3 Rxb2 36. Rhg7+ Kh8 37. Bg6 Rbxa2 38. Bf5 R2a3+ 39. Kh4 c5 40. Be6 1-0

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.10.29"]
[Round "2"]
[White "Sieberg, Rolf"]
[Black "Kapp, Wolfgang"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1681"]
[BlackElo "1542"]
[PlyCount "73"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. Qf3 Qe5+ 5. Be2 Nf6 6. d3 Qc7 7. Bf4 Qb6 8. b3 Bg4 9. Qg3 Bxe2 10. Nxe2 Nh5 11. Qg4 Nf6 12. Qc8+ Qd8 13. Qxb7 Qd5 14. Qc8+ Qd8 15. Qxd8+ Kxd8 16. c4 Nc6 17. Nbc3 e5 18. Be3 Ng4 19. Bc1 Nb4 20. 0-0 Nxd3 21. Rd1 Ngxf2 22. Be3 Nxd1 23. Rxd1 Ke8 24. Rxd3 f5 25. Rd5 Kf7 26. Rxe5 Re8 27. Rxf5+ Kg6 28. Rg5+ Kf6 29. Nd5+ Kf7 30. Nef4 g6 31. Kf2 Bd6 32. Nc3 h6 33. Rd5 Rxe3 34. Kxe3 Re8+ 35. Ne4 g5 36. Rxd6 gxf4+ 37. Kxf4 1-0

[Event "Bochum-ch"]
[Site "Bochum"]
[Date "2001.10.22"]
[Round "1"]
[White "Pusch, Hermann"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "2169"]
[BlackElo "1681"]
[PlyCount "71"]
[EventDate "2001.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Qe2 Bd6 6. d3 Ne7 7. Nbd2 Ng6 8. Nf1 0-0 9. h4 h5 10. Bg5 f6 11. Bd2 Bg4 12. 0-0-0 a5 13. Ne3 Nf4 14. Qf1 Be6 15. Kb1 a4 16. d4 exd4 17. Nxd4 Bf7 18. Nef5 Be5 19. Bxf4 Bxf4 20. Ne6 Qe8 21. Nfxg7 Qe7 22. Nxf4 Kxg7 23. Qe2 Qe5 24. Qe3 Rfe8 25. Rhe1 a3 26. Nd3 Qh2 27. b3 Qxh4 28. f4 Qg4 29. Nf2 Qe6 30. g4 hxg4 31. Nxg4 f5 32. Qc3+ Kf8 33. exf5 Qxf5 34. Qh8+ Bg8 35. Qh6+ Kf7 36. Rd7+ 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "8"]
[White "Luft, Dennis"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "C58"]
[PlyCount "64"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb3 Nxb3 7. axb3 Nxd5 8. d3 h6 9. Ne4 Be7 10. 0-0 0-0 11. Nbc3 Be6 12. Nxd5 Bxd5 13. Qg4 Bxe4 14. Bxh6 Bg6 15. Be3 a6 16. Rfe1 c6 17. Bd2 Bf6 18. g3 Qc8 19. Qf3 Qd7 20. Kg2 e4 21. Qd1 exd3 22. Bb4 Rfe8 23. Rxe8+ Rxe8 24. Ba3 Qd5+ 25. Kg1 dxc2 26. Qf1 Qxb3 27. Rc1 Bxb2 28. Bxb2 Qxb2 29. h4 Bd3 30. Rxc2 Qxc2 31. Qg2 Re1+ 32. Kh2 Be4 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "2"]
[White "Schoettler, Richard"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "C54"]
[PlyCount "101"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb6 7. e5 Ne4 8. 0-0 0-0 9. Bd5 Nf6 10. exf6 Qxf6 11. Be3 d6 12. Bxc6 bxc6 13. h3 Bd7 14. Nc3 Rae8 15. Rc1 h6 16. Re1 Re7 17. Nh2 Qg6 18. Qf3 Rfe8 19. Qg3 Qxg3 20. fxg3 Rxe3 21. Rxe3 Rxe3 22. Rd1 Rxg3 23. Kf2 Rg6 24. Nf3 Re6 25. g4 c5 26. dxc5 Bxc5+ 27. Kg2 Bc6 28. Rd3 Re3 29. Rxe3 Bxe3 30. Ne2 f6 31. Kg3 Bxf3 32. Kxf3 Bb6 33. b3 Kf7 34. Ke4 g5 35. Kf5 Bf2 36. Nc3 c6 37. Ne4 Bc5 38. Nxf6 d5 39. Nd7 Bd4 40. Ne5+ Bxe5 41. Kxe5 Ke7 42. b4 a6 43. a3 Kd7 44. Kd4 Kd6 45. Kd3 Ke5 46. Ke3 d4+ 47. Kd3 Kd5 48. a4 Ke5 49. Kd2 Ke4 50. Ke2 d3+ 51. Kd2 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "3"]
[White "Sieberg, Rolf"]
[Black "Benzin, Saddam"]
[Result "1/2-1/2"]
[ECO "B00"]
[PlyCount "70"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 Nf6 3. e5 Ng4 4. d4 d6 5. h3 Nh6 6. Be2 dxe5 7. dxe5 Qxd1+ 8. Bxd1 Bf5 9. 0-0 0-0-0 10. Nc3 f6 11. Bxh6 gxh6 12. exf6 exf6 13. Nh4 Bg6 14. Nxg6 hxg6 15. Bf3 Nd4 16. Be4 f5 17. Bd3 Bg7 18. Rfe1 Rhe8 19. Kf1 Ne6 20. Bc4 Ng5 21. Rxe8 Rxe8 22. h4 Bxc3 23. hxg5 Bxb2 24. Rb1 Bg7 25. gxh6 Bxh6 26. Bf7 Rf8 27. Bxg6 Rf6 28. Bh5 Ra6 29. Bf7 Rc6 30. Bd5 Rxc2 31. Bxb7+ Kd7 32. Bd5 Bg7 33. Bb3 Rc5 34. Rd1+ Ke7 35. Rd5 Rxd5 1/2-1/2

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "9"]
[White "Sieberg, Rolf"]
[Black "Novojilov, Kirill"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "39"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be2 d6 7. 0-0 Nf6 8. f3 Qb6 9. Qb3 Qc5 10. Be3 0-0 11. Nf5 Qc7 12. Nxg7 Kxg7 13. Qd1 d5 14. Nd2 dxe4 15. Nxe4 Qe5 16. Bd4 Qc7 17. Bxf6+ Kg8 18. Qd2 Nd7 19. Qh6 Qb6+ 20. Kh1 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "1"]
[White "Sieberg, Rolf"]
[Black "Nowik, Volker"]
[Result "0-1"]
[ECO "B08"]
[BlackElo "2188"]
[PlyCount "68"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. d4 d6 4. Be3 Nf6 5. Nc3 0-0 6. h3 c6 7. Qd2 b5 8. a3 Qa5 9. b4 Qc7 10. Bh6 Nbd7 11. Bxg7 Kxg7 12. Be2 a5 13. 0-0 Bb7 14. Rfe1 e5 15. dxe5 dxe5 16. Bd3 Rfd8 17. Qe3 Qd6 18. Red1 axb4 19. Ne2 Rxa3 20. Rxa3 bxa3 21. Ng3 h6 22. Nh4 Qf8 23. Qa7 Rb8 24. Ra1 b4 25. Nf3 Qd6 26. Nh4 Kh7 27. Qe3 Ng8 28. Qf3 Qf6 29. Qg4 Nc5 30. Nf3 Bc8 31. Qh4 Qxh4 32. Nxh4 Nxd3 33. cxd3 b3 34. Ne2 b2 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Rostek, Bettina"]
[Result "1/2-1/2"]
[ECO "C62"]
[PlyCount "156"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. Nxd4 Bd7 6. Nxc6 bxc6 7. Bc4 Be6 8. Bxe6 fxe6 9. 0-0 g6 10. Nc3 Bg7 11. Qf3 Qf6 12. Qh3 Rb8 13. Qe3 Qd4 14. Qxd4 Bxd4 15. Ne2 Bg7 16. c3 Ne7 17. Nd4 Kd7 18. Rb1 c5 19. Ne2 Rb7 20. c4 Rhb8 21. b3 a5 22. Bb2 Bxb2 23. Rxb2 a4 24. Nc1 Nc6 25. Rd1 Nd4 26. Rd3 e5 27. Rh3 h5 28. Rg3 Rb4 29. Rc3 Ke6 30. Kf1 g5 31. h3 g4 32. h4 Rf8 33. Nd3 Rb7 34. b4 cxb4 35. Rxb4 Rxb4 36. Nxb4 Rb8 37. Nc2 Rb1+ 38. Ne1 Rb2 39. a3 Kd7 40. Nd3 Rb3 41. Rxb3 axb3 42. a4 Kc6 43. Ke1 Kb6 44. Kd2 Ka5 45. Nb2 Kb4 46. a5 Kxa5 47. Kc3 c6 48. Nd3 c5 49. Nb2 g3 50. fxg3 Ne2+ 51. Kxb3 Nxg3 52. Nd1 Nxe4 53. Ne3 Kb6 54. g4 hxg4 55. Nxg4 Ng3 56. Nf6 Kc6 57. h5 Nf5 58. Ng4 Kd7 59. h6 Ne7 60. Kc3 Ke6 61. Kd3 Kf5 62. h7 Ng6 63. Nh6+ Kf6 64. Ke4 Kg7 65. Nf5+ Kxh7 66. Nxd6 Kg7 67. Kd5 Kf8 68. Kxc5 Ke7 69. Kd5 Kd7 70. Nf7 e4 71. Kxe4 Kc6 72. Kd4 Ne7 73. Ne5+ Kd6 74. c5+ Kc7 75. Kc4 Nc8 76. Kd5 Ne7+ 77. Ke6 Nc6 78. Nxc6 Kxc6 1/2-1/2

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "5"]
[White "Sieberg, Rolf"]
[Black "Zillich, Raimar"]
[Result "0-1"]
[ECO "B85"]
[PlyCount "67"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. 0-0 Be7 8. Be3 0-0 9. f4 Qc7 10. f5 Bd7 11. a3 Nc6 12. Qd2 Ne5 13. b3 Rac8 14. fxe6 fxe6 15. Na2 Nxe4 16. Qb4 Rxf1+ 17. Rxf1 Nf6 18. c4 Nc6 19. Nxc6 Bxc6 20. Qe1 d5 21. cxd5 Bxd5 22. Nb4 Bxb3 23. Bf3 a5 24. Nd3 Bc4 25. Be2 Bxa3 26. Qh4 Bxd3 27. Bxd3 Bc5 28. Rxf6 Bxe3+ 29. Kh1 gxf6 30. Qg4+ Bg5 31. h4 Qc1+ 32. Kh2 Qf4+ 33. Kh3 Qxg4+ 34. Kxg4 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "6"]
[White "Simeonidis, Marios"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "C68"]
[PlyCount "62"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. h3 Bd6 6. Nc3 Nf6 7. 0-0 c5 8. d3 h6 9. Be3 0-0 10. Qd2 Nh5 11. Nd5 c6 12. Nc3 Qf6 13. Na4 Bxh3 14. Ne1 Bc8 15. Nf3 Qe7 16. Qc3 Nf4 17. Rae1 Bg4 18. Bxc5 Bxf3 19. Bxd6 Qxd6 20. Re3 Ne2+ 21. Rxe2 Bxe2 22. Re1 Bh5 23. Re3 Rad8 24. Nc5 Qe7 25. Rg3 Rd6 26. f4 Rg6 27. Rh3 Bg4 28. Rg3 exf4 29. Rxg4 Rxg4 30. e5 f3 31. g3 Rxg3+ 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2001.??.??"]
[Round "4"]
[White "Wiese, Thomas"]
[Black "Sieberg, Rolf"]
[Result "1-0"]
[ECO "C68"]
[PlyCount "99"]
[EventDate "2001.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4 6. Qxd4 Qxd4 7. Nxd4 Nf6 8. f3 Bc5 9. Be3 0-0 10. Nd2 Rd8 11. Nf5 Bxf5 12. Bxc5 Be6 13. Be7 Rd7 14. Bxf6 gxf6 15. g4 Rad8 16. Nf1 Kf8 17. Ne3 c5 18. a3 b6 19. Rd1 Rxd1+ 20. Nxd1 Bc4 21. Ne3 Bb5 22. Rg1 Bc6 23. Rg3 Kg8 24. h4 h6 25. g5 fxg5 26. hxg5 hxg5 27. Rxg5+ Kf8 28. Rh5 Kg8 29. Rh6 Rd6 30. Rxd6 cxd6 31. Nf5 Kf8 32. Nxd6 b5 33. Ke2 Ke7 34. Nf5+ Kf6 35. b4 cxb4 36. axb4 Ke5 37. Ke3 Bd7 38. f4+ Kf6 39. Ng3 Ke7 40. Kd4 Kd6 41. e5+ Ke6 42. f5+ Ke7 43. Kc5 Kd8 44. Kd6 Bc8 45. e6 fxe6 46. fxe6 Ke8 47. e7 Bg4 48. Ne4 Kf7 49. Nf6 Kxf6 50. e8Q 1-0

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.12.01"]
[Round "11"]
[White "Sieberg, Rolf"]
[Black "Reschop, Romano"]
[Result "0-1"]
[ECO "C89"]
[WhiteElo "1620"]
[BlackElo "1664"]
[PlyCount "66"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. Qf1 Qh5 19. Qg2 Rfe8 20. Bxd5 cxd5 21. a4 f5 22. f4 Bxf4 23. gxf4 Rxe3 24. Qxd5+ Kf8 25. Rxe3 Rxe3 26. axb5 Re2 27. Nf1 Bf3 28. Qd8+ Kf7 29. Qd7+ Kf8 30. Qd8+ Kf7 31. Qd7+ Re7 32. Qd6 Qg4+ 33. Ng3 Qh3 0-1

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.11.25"]
[Round "10"]
[White "Grube, Joerg"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "C92"]
[WhiteElo "1769"]
[BlackElo "1620"]
[PlyCount "77"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. h3 d6 9. c3 h6 10. d4 exd4 11. cxd4 Bb7 12. Nbd2 Re8 13. Nf1 Na5 14. Bc2 c5 15. d5 Nc4 16. Ng3 Nd7 17. Nf5 Bf8 18. Nh2 Bc8 19. b3 Nce5 20. f4 Ng6 21. a4 Bb7 22. axb5 axb5 23. Rxa8 Qxa8 24. Qg4 Bxd5 25. e5 dxe5 26. Nxh6+ gxh6 27. Qxd7 Bc6 28. Qg4 exf4 29. Rxe8 Qxe8 30. Bxg6 fxg6 31. Bxf4 Qe4 32. Nf3 g5 33. h4 Qb1+ 34. Kh2 Bxf3 35. Qe6+ Kh7 36. Qd7+ Kg8 37. Qe6+ Kh7 38. Qd7+ Kg8 39. Qe6+ 1/2-1/2

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.11.22"]
[Round "9"]
[White "Sieberg, Rolf"]
[Black "Morgenroth, Hubertus"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "1620"]
[BlackElo "1748"]
[PlyCount "50"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Bc5 6. d3 b5 7. Bb3 0-0 8. Nc3 h6 9. Nd5 d6 10. Be3 Bxe3 11. Nxe3 Ne7 12. Qd2 c6 13. a4 Bd7 14. axb5 axb5 15. Rfc1 Ng6 16. Rxa8 Qxa8 17. Qe1 Qb7 18. Ra1 Ra8 19. Ra5 Nf4 20. Qa1 Rxa5 21. Qxa5 Qc8 22. h3 Bxh3 23. gxh3 Qxh3 24. Nh2 Ng4 25. Nhf1 Ne2# 0-1

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.11.17"]
[Round "8"]
[White "Ezzat, Tarik"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1628"]
[BlackElo "1620"]
[PlyCount "58"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 d5 5. Bb5 Nge7 6. e5 Bd7 7. Nxc6 Bxc6 8. Bd3 Ng6 9. Qe2 Qh4 10. 0-0 0-0-0 11. Nc3 Kb8 12. g3 Qh3 13. f4 Bc5+ 14. Kh1 h5 15. Bb5 Bxb5 16. Nxb5 a6 17. Nc3 Rhe8 18. Na4 Ba7 19. Qf3 Qf5 20. Nc3 c6 21. Qg2 Qg4 22. h3 Qf5 23. b4 f6 24. Na4 fxe5 25. fxe5 Qxe5 26. Bd2 Qe2 27. Rf7 Qxg2+ 28. Kxg2 Re2+ 29. Rf2 Rxf2+ 0-1

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.11.11"]
[Round "7"]
[White "Sieberg, Rolf"]
[Black "Tverskoi, Alexandre"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1620"]
[BlackElo "1835"]
[PlyCount "45"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nf6 5. Be2 e5 6. 0-0 Bd6 7. d4 e4 8. Nd2 Qf5 9. Ndxe4 Nxe4 10. Nxe4 Qxe4 11. Bb5+ Kd8 12. Re1 Qg4 13. Qd3 Qh5 14. h3 Bd7 15. Bc4 Nc6 16. Qb3 Na5 17. Qc3 Nxc4 18. Qxc4 Bxh3 19. gxh3 Qxh3 20. Qd5 Kc8 21. Re3 Bh2+ 22. Kh1 Bg3+ 23. Kg1 0-1

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.11.08"]
[Round "6"]
[White "Duschek, Guenter"]
[Black "Sieberg, Rolf"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "1711"]
[BlackElo "1620"]
[PlyCount "105"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nc6 2. Nf3 Nf6 3. c3 g6 4. Nbd2 Bg7 5. e4 d6 6. Bb5 0-0 7. h3 Bd7 8. d5 Ne5 9. Be2 Nxf3+ 10. Bxf3 e5 11. h4 Qc8 12. Nc4 Bg4 13. Bg5 Bxf3 14. Qxf3 Qg4 15. Qxg4 Nxg4 16. f3 Nf6 17. Bxf6 Bxf6 18. Ne3 Bg7 19. g4 Rac8 20. h5 Bh6 21. Ng2 Bg5 22. Ke2 c5 23. c4 Rb8 24. a4 a6 25. Ne1 b5 26. axb5 axb5 27. hxg6 fxg6 28. Ra7 h6 29. cxb5 Rxb5 30. Ra2 Rfb8 31. b4 Rxb4 32. Nd3 R4b6 33. Ra4 Kg7 34. Ra7+ R8b7 35. Rha1 Rxa7 36. Rxa7+ Kf6 37. Rc7 h5 38. gxh5 gxh5 39. Rh7 Kg6 40. Rc7 Ra6 41. Rc6 Ra2+ 42. Ke1 Be7 43. Nxe5+ Kg5 44. Nd3 Ra3 45. Ke2 h4 46. Rc8 Ra2+ 47. Kf1 Rd2 48. Rg8+ Kf6 49. Nf2 Ra2 50. Ng4+ Kf7 51. Nh6+ Kf6 52. Ng4+ Kf7 53. Nh6+ 1/2-1/2

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.11.01"]
[Round "5"]
[White "Sieberg, Rolf"]
[Black "Voeller, Lothar"]
[Result "1-0"]
[ECO "C89"]
[WhiteElo "1620"]
[BlackElo "1657"]
[PlyCount "120"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 0-0 7. c3 b5 8. Bb3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 Nf6 12. d4 Bd6 13. Re1 Ng4 14. h3 Qh4 15. Qf3 Nxf2 16. Rf1 Nxh3+ 17. gxh3 Bxh3 18. Rf2 Rae8 19. Bd2 Bg3 20. Re2 Rxe2 21. Qxe2 Bg4 22. Qg2 Bf5 23. Bd5 Re8 24. Na3 Be4 25. Bxe4 Rxe4 26. Nc2 h6 27. Ne3 g6 28. Rf1 f5 29. Rf3 f4 30. Nf1 g5 31. Nxg3 fxg3 32. Re3 Rxe3 33. Bxe3 c6 34. Bd2 Qg4 35. Be1 h5 36. Qxg3 Qxg3+ 37. Bxg3 Kf7 38. Kf2 Ke6 39. Bc7 Kd5 40. Bd8 g4 41. Be7 Kc4 42. Ke3 a5 43. Bh4 a4 44. Kd2 b4 45. Kc2 Kd5 46. Kd3 c5 47. cxb4 cxb4 48. Be1 a3 49. b3 Ke6 50. Ke4 Kf6 51. Kf4 Ke6 52. Bxb4 Kd5 53. Bc5 Ke6 54. Bxa3 Kd5 55. Bc5 Ke6 56. a4 Kd5 57. a5 Kc6 58. b4 Kb5 59. d5 Ka6 60. Kg5 g3 1-0

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.10.27"]
[Round "4"]
[White "Borchert, Eckhardt"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1695"]
[BlackElo "1620"]
[PlyCount "113"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 g6 3. f4 d6 4. Nf3 Bg7 5. Bc4 c5 6. c3 0-0 7. 0-0 Qc7 8. d5 Nbd7 9. a3 Nb6 10. Qb3 Bf5 11. Nbd2 Ne4 12. Nxe4 Bxe4 13. Ng5 Bf5 14. e4 Bd7 15. Bd2 Nxc4 16. Qxc4 Qb6 17. Qa2 Bb5 18. Rfe1 Ba4 19. Be3 Qb3 20. Qxb3 Bxb3 21. Nf3 f5 22. Nd2 Bc2 23. Rac1 Bd3 24. e5 b6 25. b3 Ba6 26. Bf2 dxe5 27. fxe5 Bh6 28. Rcd1 Rad8 29. c4 Bc8 30. e6 Bg5 31. Nf3 Bf6 32. Bh4 Bxh4 33. Nxh4 Rd6 34. Nf3 Re8 35. Ng5 Rf8 36. Re5 Rdd8 37. Kf2 Kg7 38. Rde1 Bb7 39. Nf7 Rde8 40. d6 exd6 41. Nxd6 Re7 42. Nxb7 Rxb7 43. Rd5 Kf6 44. Rd7 Rxd7 45. exd7 Rd8 46. Rd1 Ke6 47. Kf3 Rxd7 48. Rxd7 Kxd7 49. Kf4 Ke6 50. Kg5 Kf7 51. h4 Kg7 52. Kf4 Kf6 53. Ke3 Ke5 54. g3 h6 55. Kf3 g5 56. h5 Kd4 57. Ke2 0-1

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.10.21"]
[Round "3"]
[White "Sieberg, Rolf"]
[Black "Krueger, Georg"]
[Result "1/2-1/2"]
[ECO "B86"]
[WhiteElo "1620"]
[BlackElo "1719"]
[PlyCount "111"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Bc4 Be7 8. 0-0 0-0 9. Bg5 h6 10. Bh4 Qa5 11. Bb3 Rd8 12. Qe2 Qb6 13. Bf2 Qc7 14. Rad1 Nc6 15. a3 Bd7 16. Rfe1 Nxd4 17. Bxd4 b5 18. e5 dxe5 19. Bxe5 Qb6+ 20. Bd4 Bc5 21. Bxc5 Qxc5+ 22. Qe3 Qc7 23. Re2 Kf8 24. Red2 Qa7 25. Qxa7 Rxa7 26. Kf2 Ke7 27. Rd4 Rc7 28. Ne4 Nxe4+ 29. Rxe4 Bc6 30. Red4 Rcd7 31. Ke3 Rxd4 32. Rxd4 Rxd4 33. Kxd4 Kd6 34. c4 e5+ 35. Ke3 f5 36. cxb5 Bxb5 37. g3 a5 38. Bf7 Bd7 39. h4 g5 40. hxg5 hxg5 41. b4 axb4 42. axb4 Bb5 43. Bg6 f4+ 44. gxf4 gxf4+ 45. Kd2 Kd5 46. Bf7+ Kd4 47. Be6 Bc6 48. Ke2 Kc3 49. Kf2 Kxb4 50. Bf5 Kc3 51. Bg6 Kd4 52. Bf5 Bb5 53. Bg6 Bd3 54. Bh5 e4 55. fxe4 Bxe4 56. Bg4 1/2-1/2

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.10.18"]
[Round "2"]
[White "Dekhtyaryuk, Dimitri"]
[Black "Sieberg, Rolf"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "1651"]
[BlackElo "1620"]
[PlyCount "62"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bg5 h6 7. Nxc6 bxc6 8. Bd2 0-0 9. Bd3 Re8 10. f3 Bc5 11. Qe2 d5 12. Na4 Bd6 13. 0-0 dxe4 14. fxe4 Nxe4 15. Bxe4 Qh4 16. g3 Qxe4 17. Qf2 Be6 18. Nc3 Qxc2 19. Rac1 Qxb2 20. Rb1 Qa3 21. Be3 Qxc3 22. Bd4 Qc4 23. Rbc1 Qxa2 24. Rc2 Qd5 25. Rd2 Qh5 26. Re2 c5 27. Bc3 Bc4 28. Rxe8+ Rxe8 29. Re1 Rxe1+ 30. Qxe1 Qe2 31. Qb1 Qe3+ 0-1

[Event "Dortmund ABC Besserkoenner 14th"]
[Site "Dortmund"]
[Date "2000.10.13"]
[Round "1"]
[White "Sieberg, Rolf"]
[Black "Benke, Werner"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1620"]
[BlackElo "1709"]
[PlyCount "88"]
[EventDate "2000.??.??"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bd3 Be7 6. 0-0 0-0 7. Bg5 Bg4 8. Nbd2 Nbd7 9. h3 Bh5 10. c3 h6 11. Bf4 c5 12. Re1 Re8 13. Qc2 Bxf3 14. Nxf3 Qb6 15. Rad1 c4 16. Bf1 Bd6 17. Bxd6 Qxd6 18. Rxe8+ Rxe8 19. Re1 Rxe1 20. Nxe1 Ne4 21. Bxc4 Nxf2 22. Qxf2 dxc4 23. Qe2 Qd5 24. Nf3 Kf8 25. Nd2 b5 26. Qe4 Nf6 27. Qxd5 Nxd5 28. Kf2 Ke7 29. a4 a6 30. axb5 axb5 31. Ne4 Ke6 32. Kf3 Nc7 33. b4 Nd5 34. Nc5+ Ke7 35. Ne4 f5 36. Ng3 Nxc3 37. Nxf5+ Kf6 38. Nd6 Ke6 39. Ne8 g6 40. g4 Nd5 41. h4 Ke7 42. Ng7 Kf7 43. Ke4 Kxg7 44. Kxd5 c3 0-1

