[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.31"]
[Round "9"]
[White "Zemella, Jennifer"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1696"]
[BlackElo "1812"]
[PlyCount "76"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. Bc4 Bg7 5. Qe2 c6 6. e5 Nd5 7. Bd2 Nxc3 8. Bxc3 d5 9. Bd3 0-0 10. 0-0-0 b6 11. h4 h5 12. f3 c5 13. dxc5 bxc5 14. g4 Qc7 15. Qg2 d4 16. Bd2 hxg4 17. fxg4 Bb7 18. Be4 Bxe4 19. Qxe4 Qc6 20. Qf3 Bxe5 21. Qh3 c4 22. Nf3 Bg7 23. h5 c3 24. h6 Qb6 25. b3 Qa5 26. Kb1 Bf6 27. Bc1 Nc6 28. g5 d3 29. a3 dxc2+ 30. Kxc2 Rad8 31. gxf6 Nb4+ 32. axb4 Qa2+ 33. Kxc3 Rc8+ 34. Kd4 Qe2 35. Be3 exf6 36. h7+ Kh8 37. Rhe1 Qc2 38. Bd2 Qxb3 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.30"]
[Round "8"]
[White "Retta, Thorben"]
[Black "Bergmann, Josef"]
[Result "0-1"]
[ECO "A90"]
[WhiteElo "1812"]
[BlackElo "1817"]
[PlyCount "68"]
[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. Nf3 f5 2. d4 Nf6 3. c4 e6 4. g3 d5 5. Bg2 c6 6. Nbd2 Bd6 7. Ne5 Bxe5 8. dxe5 Ng4 9. Nf3 Nd7 10. cxd5 cxd5 11. Qd4 Qb6 12. Qxb6 Nxb6 13. h3 Nh6 14. b3 Nf7 15. 0-0 Bd7 16. Ba3 g5 17. Rfc1 Rc8 18. Bb4 Rg8 19. Bc3 g4 20. Ne1 Bb5 21. Nd3 Nd7 22. Bd4 Ke7 23. Re1 gxh3 24. Bxh3 h5 25. Bg2 h4 26. Rac1 Bc6 27. gxh4 Rg4 28. e3 Rcg8 29. Nf4 Nfxe5 30. Kf1 Bb5+ 31. Re2 Nc6 32. f3 Bxe2+ 33. Kxe2 Nxd4+ 34. exd4 Rxf4 0-1

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.29"]
[Round "7"]
[White "Langaditis, Sevastianos"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "1770"]
[BlackElo "1812"]
[PlyCount "120"]
[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. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 0-0 5. Bg2 d5 6. c4 c6 7. 0-0 Re8 8. d3 Nbd7 9. Nbd2 e5 10. cxd5 cxd5 11. e4 b6 12. Re1 d4 13. Nxd4 Nc5 14. Nc6 Qd6 15. Nxe5 Rxe5 16. Bxe5 Qxe5 17. Nc4 Qd4 18. b4 Nxd3 19. Re3 Qxc4 20. Rxd3 Nd7 21. Rc1 Qe6 22. Rd6 Qe7 23. Rxc8+ Rxc8 24. Rxd7 Rc1 25. Rxe7 Rxd1+ 26. Bf1 a5 27. bxa5 bxa5 28. Re8+ Bf8 29. Ra8 Rd4 30. Rxa5 Rxe4 31. Kg2 Kg7 32. a4 f6 33. Ra7+ Re7 34. Ra6 Rc7 35. Rb6 Bc5 36. Rb5 Bd4 37. Rd5 Ba7 38. a5 Kf7 39. a6 Ke6 40. Rd2 h6 41. Ra2 Rc5 42. Rb2 Rc7 43. Be2 Ke7 44. Bf3 Ke6 45. Be4 f5 46. Bf3 Ke5 47. Be2 Ke6 48. f4 Kf6 49. Bf3 Ke6 50. Kh3 Kf6 51. Rb7 Rxb7 52. axb7 g5 53. fxg5+ Kxg5 54. Bc6 Bb8 55. Kg2 h5 56. h3 h4 57. gxh4+ Kxh4 58. Bd7 Kg5 59. Bc8 f4 60. Kf2 Kh4 1/2-1/2

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.28"]
[Round "6"]
[White "Retta, Thorben"]
[Black "Strathoff, Jens"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1812"]
[BlackElo "1599"]
[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. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Nf6 5. Bg5 Nbd7 6. Nf3 Be7 7. e3 0-0 8. Bd3 c6 9. 0-0 Re8 10. h3 h6 11. Bf4 Bf8 12. Qc2 Nb6 13. Ne5 Nbd7 14. Rab1 a5 15. a3 Nxe5 16. Bxe5 Nh5 17. Bh7+ Kh8 18. Bf5 Qg5 19. Bxc8 Raxc8 20. Na4 Qd8 21. Rfc1 Kg8 22. b4 b6 23. bxa5 Bxa3 24. Rd1 c5 25. Nxb6 Rc6 26. Qa4 Ree6 27. Qxa3 Rg6 28. dxc5 Qg5 29. Bg3 Nxg3 30. fxg3 Qxg3 31. Rb2 d4 32. Nd5 Rce6 33. Qd3 dxe3 34. Ne7+ Rxe7 35. Qd8+ Kh7 36. Qxe7 Rf6 37. Qe4+ g6 38. Rf1 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.27"]
[Round "5"]
[White "Wiesemann, Peter"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "E91"]
[WhiteElo "1742"]
[BlackElo "1812"]
[PlyCount "138"]
[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. Be2 0-0 6. Nf3 c6 7. 0-0 Qc7 8. Qc2 e5 9. dxe5 dxe5 10. b3 Na6 11. Ba3 Rd8 12. Rad1 Nh5 13. Rxd8+ Qxd8 14. Rd1 Qa5 15. Be7 Be6 16. Qd2 Bf6 17. Bxf6 Nxf6 18. Ng5 Nc5 19. Qd6 Qxc3 20. Qxc5 Qc2 21. Bf3 Re8 22. Qxe5 Kg7 23. Nxh7 Kxh7 24. Qxf6 Qxa2 25. Qc3 Qa3 26. Ra1 Qc5 27. Ra5 Qb6 28. h4 c5 29. Ra1 Rd8 30. g3 a6 31. Rd1 Qc7 32. Rxd8 Qxd8 33. h5 gxh5 34. Bxh5 Qg5 35. Be2 Bd7 36. f4 Qg6 37. f5 Qg5 38. Kg2 Bc6 39. Bf3 Qe7 40. Qe3 b5 41. e5 Bxf3+ 42. Kxf3 bxc4 43. bxc4 Qb7+ 44. Qe4 Qb3+ 45. Kf4 Qd1 46. Kg5 Qd2+ 47. Kf6 Qd8+ 48. Kxf7 Qd7+ 49. Kf6 Qd8+ 50. Ke6 Qe8+ 51. Kd6 Qf8+ 52. Kc7 Qe7+ 53. Kb6 Qd8+ 54. Kxa6 Qd4 55. Qh4+ Kg8 56. Qg5+ Kh7 57. Qg6+ Kh8 58. Qf6+ Kg8 59. Kb5 Qb2+ 60. Kxc5 Qa3+ 61. Kd4 Qa1+ 62. Ke4 Qe1+ 63. Kf4 Qf2+ 64. Kg4 Qe2+ 65. Kg5 Qe3+ 66. Kh5 Qe2+ 67. g4 Qh2+ 68. Kg5 Qd2+ 69. Kg6 Qh6+ 1/2-1/2

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.26"]
[Round "4"]
[White "Retta, Thorben"]
[Black "Rosenstein, Wadim"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1812"]
[BlackElo "1723"]
[PlyCount "50"]
[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. Nf3 e6 3. d3 Be7 4. g3 Nf6 5. Bg2 d5 6. e5 Nfd7 7. 0-0 0-0 8. Re1 Nc6 9. h4 b5 10. Bf4 Bb7 11. Nbd2 c4 12. Nf1 Bc5 13. d4 Be7 14. N1h2 a5 15. Ng5 h6 16. Nh3 Nb6 17. Ng4 h5 18. Nh2 g6 19. Bh6 Re8 20. g4 Bxh4 21. gxh5 Kh7 22. Be3 f5 23. hxg6+ Kg7 24. Nf4 Bg5 25. Qh5 Bh6 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.25"]
[Round "3"]
[White "Holdsch, Peter Michael"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "1590"]
[BlackElo "1812"]
[PlyCount "95"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. h3 0-0 6. Be3 c6 7. Be2 Qc7 8. Qd2 Re8 9. 0-0 Nbd7 10. Rac1 e5 11. d5 c5 12. Nh2 a6 13. a4 Rb8 14. f3 Nh5 15. Qe1 f5 16. Kh1 f4 17. Bf2 g5 18. g4 fxg3 19. Bxg3 Nxg3+ 20. Qxg3 h6 21. h4 gxh4 22. Qxh4 Kh7 23. Ng4 Rf8 24. Rf2 Nf6 25. Rh2 Ng8 26. Rg1 Qe7 27. Qh5 Qf7 28. Qh4 Qf4 29. Qh5 Nf6 30. Nxf6+ Qxf6 31. Nd1 Bd7 32. Ne3 Qf7 33. Qh4 Qf6 34. Qh5 Be8 35. Qg4 Bxa4 36. Nf5 Rg8 37. Rhg2 Bh8 38. Qxg8+ Rxg8 39. Rxg8 Bd7 40. R1g6 Qxg6 41. Rxg6 Kxg6 42. Nxd6 b6 43. Bxa6 Bf6 44. c3 Kg5 45. b4 cxb4 46. cxb4 Kf4 47. Kg2 Be7 48. Nc4 1/2-1/2

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.24"]
[Round "2"]
[White "Retta, Thorben"]
[Black "Kissing, Bastian"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "1812"]
[BlackElo "1624"]
[PlyCount "59"]
[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. Nf3 e6 3. c4 b6 4. Nc3 Bb7 5. Bg5 Be7 6. Qc2 0-0 7. e4 d6 8. Bd3 Nbd7 9. 0-0 c5 10. Rfe1 cxd4 11. Nxd4 Ne5 12. Rad1 Nxd3 13. Rxd3 Rc8 14. e5 Ng4 15. Bxe7 Qxe7 16. exd6 Qxd6 17. Nf3 Qb8 18. h3 Nf6 19. Ne5 Qa8 20. f3 Rfd8 21. Red1 Qb8 22. f4 Qc7 23. Nb5 Qc5+ 24. Kh2 Rxd3 25. Qxd3 Kf8 26. Nxa7 Qf2 27. Qd6+ Ke8 28. Nec6 Bxc6 29. Nxc6 Qc5 30. Qd8+ 1-0

[Event "Dortmund op-B"]
[Site "Dortmund"]
[Date "2004.07.23"]
[Round "1"]
[White "Hoerter, Philip"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1435"]
[BlackElo "1812"]
[PlyCount "106"]
[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 d6 2. d4 Nf6 3. Bd3 g6 4. f4 Bg7 5. Nf3 0-0 6. 0-0 c6 7. c3 Qc7 8. Qc2 c5 9. Nbd2 Nbd7 10. f5 e5 11. fxe6 fxe6 12. Nc4 b5 13. Ne3 c4 14. Be2 Bb7 15. Ng5 Rae8 16. Bf3 e5 17. d5 Nc5 18. Bd2 Bc8 19. b3 h6 20. Nh3 Nd3 21. a4 g5 22. bxc4 bxc4 23. Nf2 Nf4 24. g4 h5 25. gxh5 Nh3+ 26. Kh1 Nf4 27. Rg1 N6xh5 28. Rxg5 Nf6 29. Rag1 Rf7 30. Nf5 Bxf5 31. Rxf5 Nh7 32. Ng4 Kh8 33. Bxf4 exf4 34. Rh5 Be5 35. Nxe5 Rxe5 36. Qg2 Rg7 37. Qxg7+ Qxg7 38. Rxg7 Kxg7 39. Rxe5 dxe5 40. Be2 Ng5 41. Bxc4 Nxe4 42. Kg2 Nxc3 43. a5 e4 44. Kf2 Kf6 45. d6 Nd1+ 46. Ke2 Ne3 47. Bb3 Nf5 48. d7 Nd4+ 49. Ke1 Ke7 50. Ba4 Nf3+ 51. Kf2 Nxh2 52. Kg2 Ng4 53. Bc2 Ne3+ 0-1

[Event "NRW-chT U18 9899"]
[Site "Germany"]
[Date "1999.04.25"]
[Round "8"]
[White "Seel, Christian"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "A37"]
[PlyCount "89"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 c5 3. Nc3 Nc6 4. g3 Bg7 5. Bg2 d6 6. 0-0 e5 7. d3 Nf6 8. Ne1 Be6 9. Bg5 h6 10. Bxf6 Bxf6 11. Nc2 Qd7 12. Re1 Bh3 13. Nd5 Bd8 14. Bh1 a5 15. Qd2 h5 16. e3 h4 17. d4 hxg3 18. fxg3 0-0 19. dxc5 dxc5 20. Bg2 Bg5 21. Rad1 Rad8 22. Qf2 Kg7 23. Na3 Bxg2 24. Qxg2 f5 25. Nb5 e4 26. h4 Bh6 27. b3 Kh8 28. Nbc3 Ne5 29. Kh1 Nf3 30. Rf1 Qf7 31. Qh3 Qe6 32. Ne2 Kg7 33. Nef4 Bxf4 34. Nxf4 Qf6 35. h5 g5 36. h6+ Qxh6 37. Qxh6+ Kxh6 38. Ne6 Rxd1 39. Rxd1 Rf6 40. Nxc5 b6 41. Nd7 Re6 42. Nf8 Rf6 43. Nd7 Re6 44. Nf8 Rf6 45. Nd7 1/2-1/2

[Event "NRW-chT U18 9899"]
[Site "Germany"]
[Date "1999.02.28"]
[Round "7"]
[White "Retta, Thorben"]
[Black "Bolczek, Malte"]
[Result "1/2-1/2"]
[ECO "B90"]
[PlyCount "22"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e5 7. Nb3 Be6 8. Bg5 Be7 9. Bxf6 Bxf6 10. Nd5 Bg5 11. Bc4 Nc6 1/2-1/2

[Event "NRW-chT U18 9899"]
[Site "Germany"]
[Date "1999.01.24"]
[Round "6"]
[White "Schuh, Dirk"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "2060"]
[PlyCount "106"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 Nc6 5. Be3 cxd4 6. Nxd4 Nf6 7. Bc4 0-0 8. f3 Qb6 9. 0-0 Qxb2 10. Nce2 Qb4 11. Bb3 Nxd4 12. Bxd4 d6 13. Rb1 Qa5 14. Bc3 Qc7 15. Qd2 Bd7 16. Rfd1 Rfc8 17. Bd4 b5 18. Qe3 Ne8 19. Bxg7 Nxg7 20. Nf4 Qc5 21. Qxc5 Rxc5 22. Nd5 Kf8 23. e5 Ne8 24. exd6 exd6 25. Nf4 Rac8 26. Rd2 a5 27. Nd3 Rc3 28. Rc1 a4 29. Bd5 Bf5 30. Nb4 Nf6 31. g4 Nxd5 32. Rxd5 Bxc2 33. Rxb5 Bd3 34. Rxc3 Rxc3 35. Ra5 a3 36. Kf2 f5 37. Rd5 Bc4 38. Rxd6 fxg4 39. fxg4 Bxa2 40. Nxa2 Rc2+ 41. Kg3 Rxa2 42. Ra6 Ra1 43. Kg2 a2 44. Ra7 g5 45. h3 Ke8 46. Kh2 Kd8 47. Kg2 Kc8 48. Kh2 Kb8 49. Ra3 Kb7 50. Kg2 Kb6 51. Kh2 Kb5 52. Kg2 Kb4 53. Ra8 Kb3 1/2-1/2

[Event "Ruhrgebiet VL2 9899"]
[Site "Ruhrgebiet"]
[Date "1999.01.??"]
[Round "5"]
[White "Balke, Reiner"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "A00"]
[PlyCount "31"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 d4 3. Nce2 c5 4. Ng3 Nc6 5. f4 Qc7 6. d3 g6 7. Nf3 Bg7 8. Be2 e6 9. 0-0 Nge7 10. a4 0-0 11. Nd2 e5 12. f5 gxf5 13. exf5 Bh6 14. Nde4 Bxc1 15. Qxc1 Nd5 16. Nf6+ 1-0

[Event "GER-chT U16"]
[Site "Doernfeld"]
[Date "1999.??.??"]
[Round "?"]
[White "Haecker, Alexander"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "C77"]
[PlyCount "104"]
[EventDate "1999.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[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. Ba4 Nf6 5. Nc3 Bc5 6. d3 0-0 7. Bg5 Be7 8. 0-0 d6 9. Nd2 Nd4 10. h3 h6 11. Be3 b5 12. Bb3 Nxb3 13. axb3 b4 14. Ne2 d5 15. exd5 Nxd5 16. Nc4 Nxe3 17. fxe3 Bg5 18. e4 Qe7 19. Ng3 g6 20. Qe2 Bb7 21. Ra5 Bf4 22. Qg4 h5 23. Qf3 f5 24. Rf2 Qh4 25. Nf1 fxe4 26. Qe2 exd3 27. cxd3 Bg3 28. Nxg3 Qxg3 29. Nxe5 Rae8 30. Rxf8+ Rxf8 31. Nc4 Rf3 32. Re5 Bc6 33. Re7 Bd5 34. Re8+ Kg7 35. Qe7+ Rf7 36. Qe5+ Qxe5 37. Rxe5 Rd7 38. Re3 Bxc4 39. bxc4 Kf6 40. Kf2 a5 41. b3 Re7 42. Rf3+ Ke5 43. Re3+ Kd6 44. Rg3 Kc5 45. Rxg6 Kd4 46. Rg5 Kc3 47. Rxa5 Kxb3 48. c5 Kc2 49. Kg3 b3 50. Kh4 Rg7 51. d4 b2 52. Rb5 c6 0-1

[Event "GER-chT U16"]
[Site "Doernfeld"]
[Date "1999.??.??"]
[Round "?"]
[White "Kandetzki, Christoph"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "D60"]
[PlyCount "118"]
[EventDate "1999.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nbd7 5. Bg5 Be7 6. e3 0-0 7. Bd3 c6 8. Qc2 dxc4 9. Bxc4 b5 10. Bd3 h6 11. Bh4 a6 12. 0-0 c5 13. dxc5 Nxc5 14. Rfd1 Nxd3 15. Rxd3 Qc7 16. Bg3 Qc5 17. Qd1 Bb7 18. Rc1 Rac8 19. Bd6 Bxd6 20. Rxd6 Nd5 21. Rd7 Rfd8 22. Nxd5 Rxd7 23. Rxc5 Rxc5 24. e4 Bxd5 25. exd5 Rcxd5 26. Qe2 Rd1+ 27. Ne1 R7d2 28. Qe4 Rxb2 29. Qa8+ Kh7 30. Qe4+ g6 31. h4 Rbb1 32. Qf4 Rxe1+ 33. Kh2 Kg7 34. Qd4+ e5 35. Qd6 a5 36. f4 exf4 37. Qd4+ Kh7 38. Qxf4 Rf1 39. Qc7 a4 40. Qc2 Rbc1 41. Qd2 h5 42. Qd5 b4 43. Qb5 b3 44. axb3 a3 45. Qa4 Ra1 46. Qd4 Rfd1 47. Qf4 Kg7 48. Qe5+ Kf8 49. Qh8+ Ke7 50. Qe5+ Kd7 51. Qb5+ Kd6 52. Qb4+ Ke5 53. Qc3+ Ke4 54. Qc4+ Ke3 55. Qc3+ Ke2 56. Qc2+ Rd2 57. Qe4+ Kd1 58. Kg1 Rc2 59. Kf1 Rcc1 0-1

[Event "GER-chT U16"]
[Site "Doernfeld"]
[Date "1999.??.??"]
[Round "?"]
[White "Koenig, Alexander"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "73"]
[EventDate "1999.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 c6 5. Be3 b5 6. Qd2 a5 7. e5 dxe5 8. dxe5 Qxd2+ 9. Bxd2 Nh5 10. Bd3 Ng7 11. Nge2 Na6 12. Be4 Bd7 13. Nxb5 Rc8 14. Nbc3 Nc5 15. 0-0 Nge6 16. Be3 Bg7 17. f4 Nxe4 18. Nxe4 0-0 19. Rad1 Rfd8 20. Bb6 Nc7 21. N2c3 Kf8 22. Nc5 Ke8 23. Nb7 Rb8 24. Bxc7 Rxb7 25. Bxd8 Kxd8 26. Na4 Bh6 27. Nc5 Ra7 28. Rxd7+ Rxd7 29. Nxd7 Kxd7 30. Rd1+ Kc7 31. g4 Bf8 32. Kf2 e6 33. Ke3 h5 34. Kd4 Be7 35. c4 c5+ 36. Kc3 Kc6 37. Kb3 1-0

[Event "GER-chT U16"]
[Site "Doernfeld"]
[Date "1999.??.??"]
[Round "?"]
[White "Martens, Stefan"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "C89"]
[PlyCount "62"]
[EventDate "1999.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[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. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 e4 10. Ng5 Nxd5 11. Nxe4 Kh8 12. Ng3 Nf6 13. d4 Bg4 14. f3 Bh5 15. Nxh5 Nxh5 16. f4 Nf6 17. Qf3 Qd7 18. Nd2 Rad8 19. Nf1 Na5 20. Be3 Qg4 21. Qxg4 Nxg4 22. Bd2 c5 23. h3 Nf6 24. dxc5 Bxc5+ 25. Be3 Nb7 26. Bxc5 Nxc5 27. Bc2 Nd5 28. g3 Nd7 29. Kf2 N7b6 30. Bb3 Nc4 31. Bxc4 bxc4 1-0

[Event "GER-chT U16"]
[Site "Doernfeld"]
[Date "1999.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Dallakian, Oleg"]
[Result "1/2-1/2"]
[ECO "E68"]
[PlyCount "50"]
[EventDate "1999.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d6 6. c4 Nbd7 7. Nc3 e5 8. e4 exd4 9. Nxd4 Nc5 10. Be3 Re8 11. f3 a5 12. Qd2 Nfd7 13. Bh6 Bh8 14. Nc2 Ne5 15. b3 Nc6 16. Rad1 Ne6 17. Be3 b6 18. f4 Nc5 19. e5 Bb7 20. exd6 Qxd6 21. Qxd6 cxd6 22. Ne4 Rad8 23. Nxd6 Nb4 24. Bxb7 Nxc2 25. Bxc5 bxc5 1/2-1/2

[Event "GER-chT U16"]
[Site "Doernfeld"]
[Date "1999.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Laux, Philipp"]
[Result "1-0"]
[ECO "A90"]
[PlyCount "143"]
[EventDate "1999.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 f5 5. cxd5 exd5 6. g3 Nf6 7. Bg2 Bd6 8. 0-0 0-0 9. Bf4 Qc7 10. e3 Be6 11. Qc2 Ne4 12. Nb5 Qd8 13. Nxd6 Nxd6 14. Bxd6 Qxd6 15. Rab1 Nd7 16. Qd2 Nf6 17. Ne5 Ne4 18. Qc2 Rfc8 19. b4 Bd7 20. Rfc1 Qe6 21. Nd3 Be8 22. Qb2 Nd6 23. Nc5 Qf7 24. Bf1 Rc7 25. a4 Rac8 26. Rc2 g6 27. Rbc1 Kg7 28. Nb3 a6 29. Nc5 Ra8 30. a5 Kg8 31. Nb3 Rac8 32. Nd2 Nb5 33. Nf3 Qe6 34. Qb3 Kg7 35. Rc5 Qd6 36. Ne5 Kf6 37. Nd3 Kg7 38. h4 Kf8 39. Nf4 Kg7 40. Qc2 Bf7 41. Bxb5 axb5 42. Nd3 Qe7 43. Nf4 h6 44. Ne2 Qe4 45. Nc3 Qxc2 46. Rxc2 b6 47. axb6 Rb7 48. Nxb5 Rxb6 49. Na7 Rc7 50. Nxc6 Be8 51. Ne5 Rxc5 52. bxc5 Rb7 53. c6 Rc7 54. Rb2 Kf6 55. Rb7 Rc8 56. Rb6 Ke7 57. Kf1 Kd6 58. Ke2 Bxc6 59. Rxc6+ Rxc6 60. Nxc6 Kxc6 61. Kd3 Kd6 62. f3 Ke6 63. e4 g5 64. hxg5 hxg5 65. e5 Kd7 66. Kc3 Kc7 67. Kb4 Kb6 68. Ka4 Kc7 69. Kb5 Kd7 70. Kc5 Ke6 71. Kc6 f4 72. g4 1-0

[Event "GER-chT U16"]
[Site "Doernfeld"]
[Date "1999.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Lobe, Juergen"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "75"]
[EventDate "1999.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[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. d4 exd4 4. Bc4 Nf6 5. 0-0 Be7 6. e5 Ne4 7. Re1 Nc5 8. Nxd4 0-0 9. Nc3 Ne6 10. Nxe6 fxe6 11. Qg4 Rf5 12. Qxf5 Na5 13. Qg4 Nxc4 14. Qxc4 b6 15. Qe4 Rb8 16. Qg4 Bb7 17. f4 g6 18. Ne4 Bxe4 19. Rxe4 Kg7 20. Bd2 Qf8 21. Rf1 Bc5+ 22. Kh1 Qf7 23. Bc3 Be7 24. f5 Kg8 25. f6 Bc5 26. h4 h5 27. Qg5 Kh7 28. g4 hxg4 29. Rxg4 Rg8 30. h5 gxh5 31. Qxg8+ Qxg8 32. Rxg8 Kxg8 33. f7+ Kg7 34. Kg2 Bf8 35. Kg3 Be7 36. Bd2 Bf8 37. Kh4 d6 38. Kxh5 1-0

[Event "NRW-chT U18 9899"]
[Site "Germany"]
[Date "1998.12.06"]
[Round "5"]
[White "Dehne, Mirko"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "83"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 c5 3. c3 Nc6 4. e3 Bg4 5. dxc5 e6 6. b4 a5 7. Bb5 axb4 8. cxb4 Qf6 9. Bxc6+ bxc6 10. Qd4 Be7 11. Nbd2 Nh6 12. Bb2 Nf5 13. Qxf6 Bxf6 14. Be5 0-0 15. a4 Ne7 16. 0-0 Bxe5 17. Nxe5 Bf5 18. Nd7 Rfd8 19. Nb6 Ra7 20. Nf3 f6 21. Nd4 e5 22. Nxf5 Nxf5 23. b5 Rc7 24. Rfc1 d4 25. e4 Ne7 26. Kf1 f5 27. f3 fxe4 28. fxe4 Rf8+ 29. Ke2 Rf4 30. Kd3 Rf2 31. a5 Rxg2 32. a6 Ra7 33. Nc8 Nxc8 34. b6 Ra8 35. b7 Rb8 36. bxc8Q+ Rxc8 37. a7 Ra8 38. Rf1 Rg6 39. Rab1 Re6 40. Rb8+ Re8 41. Rxe8+ Rxe8 42. Rb1 1-0

[Event "NRW-chT U18 9899"]
[Site "Germany"]
[Date "1998.11.15"]
[Round "4"]
[White "Retta, Thorben"]
[Black "Heyen, Michael"]
[Result "1/2-1/2"]
[ECO "D53"]
[PlyCount "112"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. cxd5 Nxd5 6. Bxe7 Nxe7 7. e4 0-0 8. Nf3 b6 9. Be2 Bb7 10. 0-0 Nd7 11. b4 Nf6 12. e5 Nfd5 13. Nxd5 Nxd5 14. Qd2 Qe7 15. a3 c5 16. bxc5 bxc5 17. dxc5 Qxc5 18. Rfc1 Qe7 19. Nd4 a6 20. Rab1 Rfc8 21. Qa5 Rxc1+ 22. Rxc1 Qg5 23. Rb1 Nf4 24. g3 Nxe2+ 25. Nxe2 Bf3 26. Nd4 Bd5 27. f4 Qe7 28. Rc1 Qa7 29. Qc5 Qxc5 30. Rxc5 f6 31. Nc6 Kf7 32. Nb4 Be4 33. Kf2 a5 34. Rc7+ Kg6 35. Nc6 Bxc6 36. Rxc6 Kf7 37. Rc7+ Kg6 38. Re7 Ra6 39. g4 fxe5 40. fxe5 Rb6 41. Kf3 Rb3+ 42. Kf4 Rxa3 43. Rxe6+ Kf7 44. Ra6 h6 45. h4 Ra1 46. e6+ Ke7 47. Kf5 Rg1 48. Ra7+ Kf8 49. Rxa5 Rf1+ 50. Ke5 Ke7 51. Ra7+ Kf8 52. Ra4 Ke7 53. h5 Re1+ 54. Kf5 Rf1+ 55. Rf4 Rxf4+ 56. Kxf4 Kxe6 1/2-1/2

[Event "NRW-chT U18 9899"]
[Site "Germany"]
[Date "1998.10.25"]
[Round "3"]
[White "Retta, Thorben"]
[Black "Wyrwich, Thomas"]
[Result "0-1"]
[ECO "E21"]
[BlackElo "2243"]
[PlyCount "78"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 e6 3. c4 b6 4. Nc3 Bb4 5. Qc2 c5 6. Bg5 cxd4 7. Nxd4 Bb7 8. e4 h6 9. Bxf6 Qxf6 10. Ndb5 Na6 11. Rd1 0-0 12. Be2 Nc5 13. Nd6 Bc6 14. Rd2 Qe5 15. 0-0 Na4 16. f4 Qa5 17. Rc1 Bxd6 18. Rxd6 Qc5+ 19. Kh1 Qxd6 20. Nxa4 Qxf4 21. Nc3 Qg5 22. Bf3 f5 23. Rd1 Rf7 24. b4 Raf8 25. b5 Bxe4 26. Nxe4 fxe4 27. Qxe4 Qc5 28. Be2 Qf5 29. Qe3 Qf1+ 30. Bxf1 Rxf1+ 31. Rxf1 Rxf1+ 32. Qg1 Rxg1+ 33. Kxg1 Kf7 34. Kf2 Ke7 35. Ke3 d5 36. c5 bxc5 37. a4 Kd6 38. Kd3 c4+ 39. Kc3 Kc5 0-1

[Event "NRW-chT U18 9899"]
[Site "Germany"]
[Date "1998.09.20"]
[Round "2"]
[White "Hackstein, Urs"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "D20"]
[PlyCount "60"]
[EventDate "1998.??.??"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. dxe5 Qxd1+ 5. Kxd1 Nc6 6. Bxc4 Nxe5 7. Bb3 Nf6 8. f3 Bc5 9. Kc2 0-0 10. Bf4 Nc6 11. Ne2 b6 12. Nbc3 Nb4+ 13. Kb1 Ba6 14. a3 Bd3+ 15. Kc1 Nc6 16. Rd1 Rad8 17. g4 Bxe2 18. Rxd8 Rxd8 19. Nxe2 Rd3 20. Kc2 Rxf3 21. Bxc7 Rf2 22. Kd3 Nxg4 23. Bf4 Nge5+ 24. Kd2 Nd4 25. Bd1 Nc4+ 26. Kd3 Nxb2+ 27. Kd2 Nxd1 28. Rxd1 Rxe2+ 29. Kc3 Rxe4 30. Bb8 f5 0-1

[Event "GER-chT U15"]
[Site "Wurmannsquick"]
[Date "1998.??.??"]
[Round "2"]
[White "Bardacheva, Anna"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "C45"]
[PlyCount "78"]
[EventDate "1998.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qe2 bxc6 7. Nc3 d6 8. Be3 Bxe3 9. Qxe3 Ne7 10. Bc4 0-0 11. 0-0-0 Be6 12. Bb3 Bxb3 13. axb3 Rfe8 14. f4 c5 15. g4 Nc6 16. Nd5 Qd8 17. g5 a5 18. Nc3 Qb8 19. Rhg1 Nd4 20. Rxd4 cxd4 21. Qxd4 Qb6 22. Qxb6 cxb6 23. f5 Re5 24. h4 b5 25. Rd1 b4 26. Na4 Rxe4 27. Rxd6 Rxh4 28. g6 Re8 29. gxh7+ Kxh7 30. Rd5 Rh2 31. Kd1 Ree2 32. c4 Reg2 33. Re5 Rg1+ 34. Re1 Rxe1+ 35. Kxe1 Rh5 36. Kd2 Rxf5 37. Kd3 g5 38. Nb6 Rf3+ 39. Kc2 g4 0-1

[Event "GER-chT U15"]
[Site "Wurmannsquick"]
[Date "1998.??.??"]
[Round "3"]
[White "Retta, Thorben"]
[Black "Ketelaar, Felix"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "126"]
[EventDate "1998.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. g3 Bg7 5. Bg2 0-0 6. 0-0 c6 7. Re1 Nbd7 8. e4 Nxe4 9. Nxe4 dxe4 10. Rxe4 Nf6 11. Re1 Re8 12. c3 Qb6 13. Qe2 Bg4 14. h3 Bxf3 15. Qxf3 Rad8 16. h4 Qa5 17. b4 Qb6 18. a4 Nd5 19. Bd2 Qc7 20. Qe2 e6 21. Rac1 Ne7 22. b5 Qd7 23. bxc6 Nxc6 24. Rb1 Rc8 25. Qb5 b6 26. Red1 Red8 27. Bf4 Na5 28. Bd2 Nc4 29. Be1 Bf8 30. Bf1 Na3 31. Qxd7 Rxd7 32. Rb3 Nc4 33. Bxc4 Rxc4 34. Ra1 Be7 35. Kf1 Bd8 36. Ke2 Rdc7 37. Kd3 Kf8 38. Bd2 Ke7 39. Rb5 R4c6 40. h5 Ke8 41. hxg6 hxg6 42. Rbb1 Bf6 43. a5 Kd7 44. axb6 Rxb6 45. Rxb6 axb6 46. Ra6 Rb7 47. c4 Be7 48. Kc3 Kc6 49. Kb3 Rd7 50. Bc3 Kb7 51. Ra1 Bf6 52. Rd1 Kc6 53. Kc2 Rd8 54. f3 Rd7 55. f4 Rd8 56. g4 Rd7 57. Kd3 Rd8 58. Ke4 Ra8 59. Rh1 Kd7 60. Rh7 Rf8 61. Bd2 Ke8 62. Be3 Rh8 63. Rxh8+ Bxh8 1-0

[Event "GER-chT U15"]
[Site "Wurmannsquick"]
[Date "1998.??.??"]
[Round "7"]
[White "Retta, Thorben"]
[Black "Klinger, Sebastian"]
[Result "1/2-1/2"]
[ECO "D35"]
[PlyCount "29"]
[EventDate "1998.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. cxd5 exd5 7. Bd3 Bd6 8. Nf3 0-0 9. Rc1 h6 10. Bh4 Re8 11. 0-0 Nf8 12. Qc2 Bg4 13. Nd2 Bh5 14. e4 dxe4 15. Ndxe4 1/2-1/2

[Event "Ruhrgebiet-ch U15"]
[Site "Germany"]
[Date "1998.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Kozlowski, Stephan"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "47"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 Be7 6. e3 0-0 7. Qc2 h6 8. Bh4 c6 9. cxd5 exd5 10. Bd3 Re8 11. 0-0 Bd6 12. Rfe1 a6 13. Rab1 Qc7 14. b4 b5 15. a4 bxa4 16. Nxa4 Rb8 17. Nc5 Nxc5 18. bxc5 Rxb1 19. Rxb1 Be7 20. Bg3 Qd7 21. Ne5 Qe6 22. Rb6 Bd7 23. Nxc6 Bxc6 24. Bf5 1-0

[Event "GER-chT U15"]
[Site "Wurmannsquick"]
[Date "1998.??.??"]
[Round "1"]
[White "Retta, Thorben"]
[Black "Riegel, Frank"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "103"]
[EventDate "1998.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 h6 8. Bh4 0-0 9. Nf3 Ne4 10. Bxe7 Qxe7 11. 0-0 Bg4 12. Qc2 Bxf3 13. gxf3 Ng5 14. Be2 Nh3+ 15. Kh1 Qh4 16. Qf5 g6 17. Qc2 Nd7 18. Bd3 Ng5 19. Be2 Qh3 20. Qd1 Nf6 21. Rg1 Rae8 22. Rg3 Qh4 23. Qf1 Re7 24. Qg2 Kg7 25. Rg1 Nh5 26. Rg4 Qh3 27. Rxg5 Qxg2+ 28. R5xg2 b5 29. b4 Nf6 30. Rc1 Re6 31. Nd1 Rfe8 32. Nb2 a6 33. Nd3 Nd7 34. f4 Kh7 35. Ne5 Nxe5 36. fxe5 h5 37. Rc5 R8e7 38. Rg1 Rc7 39. Rgc1 Rc8 40. Rxd5 Kg8 41. Rd7 Kf8 42. d5 Rxe5 43. dxc6 Ke8 44. Rb7 Re6 45. Bf3 Kd8 46. Rd1+ Ke8 47. Rdd7 Rf6 48. Kg2 g5 49. Bxh5 Re6 50. Rxf7 Rh6 51. Rg7+ Kf8 52. Rbf7+ 1-0

[Event "GER-chT U15"]
[Site "Wurmannsquick"]
[Date "1998.??.??"]
[Round "5"]
[White "Retta, Thorben"]
[Black "Seifert, Volker"]
[Result "1/2-1/2"]
[ECO "E18"]
[PlyCount "49"]
[EventDate "1998.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 Nf6 3. Bg2 d5 4. d4 Be7 5. 0-0 0-0 6. c4 b6 7. Nc3 Bb7 8. cxd5 exd5 9. Bf4 Nbd7 10. Ne5 c5 11. dxc5 Nxc5 12. Nb5 Nfe4 13. Nd4 Bf6 14. Nef3 Re8 15. Rc1 Qd7 16. b4 Ne6 17. Nxe6 Qxe6 18. Nd4 Bxd4 19. Qxd4 Ba6 20. Rc2 Rac8 21. Rfc1 Rc4 22. Rxc4 Bxc4 23. Bxe4 Qxe4 24. Qxe4 Rxe4 25. e3 1/2-1/2

[Event "Ruhrgebiet-ch U15"]
[Site "Germany"]
[Date "1998.??.??"]
[Round "?"]
[White "Smolka, Alexander"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "16"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bc4 Bg7 5. Qe2 c6 6. e5 dxe5 7. dxe5 Nd5 8. Bd2 Nd7 1/2-1/2

[Event "GER-chT U15"]
[Site "Wurmannsquick"]
[Date "1998.??.??"]
[Round "6"]
[White "Terwitte, Johannes"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "78"]
[EventDate "1998.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 a6 7. Bg5 b5 8. e5 Nfd7 9. exd6 cxd6 10. Re1 h6 11. Bh4 Nf6 12. Bd3 Bb7 13. Ne4 Nxe4 14. Bxe4 Bxe4 15. Rxe4 g5 16. Bxg5 hxg5 17. Nxg5 Nd7 18. h4 Nf6 19. Qd3 e5 20. Re3 e4 21. Nxe4 Nxe4 22. Rxe4 Re8 23. Rae1 Qd7 24. Qg3 Rxe4 25. Rxe4 Qf5 26. Rg4 Qf6 27. h5 Re8 28. Kf1 Kh7 29. Qd3+ Kh8 30. Qg3 Qh6 31. Qf4 Qxf4 32. Rxf4 Kg8 33. g4 b4 34. g5 Rc8 35. d5 a5 36. Re4 Bxb2 37. Re2 Bc1 38. g6 fxg6 39. hxg6 Bf4 0-1

[Event "GER-chT U15"]
[Site "Wurmannsquick"]
[Date "1998.??.??"]
[Round "4"]
[White "Thiele, Matthias"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "A37"]
[PlyCount "71"]
[EventDate "1998.12.30"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 d6 4. g3 e5 5. Bg2 c5 6. 0-0 Ne7 7. d3 Nbc6 8. a3 0-0 9. Rb1 a5 10. Bd2 h6 11. Nb5 Be6 12. Ne1 Rb8 13. Nc2 Qd7 14. b4 axb4 15. axb4 Rbd8 16. Nc3 f5 17. Na4 Nd4 18. Nxd4 cxd4 19. b5 f4 20. Bb4 Bh3 21. c5 Bxg2 22. Kxg2 fxg3 23. hxg3 Qg4 24. cxd6 Nf5 25. Rh1 e4 26. Be1 Be5 27. e3 Qf3+ 28. Kg1 dxe3 29. dxe4 exf2+ 30. Bxf2 Nxg3 31. Qxf3 Rxf3 32. Rxh6 Kg7 33. Rh3 Ne2+ 34. Kg2 Rxh3 35. Kxh3 Rh8+ 36. Kg4 1/2-1/2

[Event "Ruhrgebiet-ch U15"]
[Site "Germany"]
[Date "1998.??.??"]
[Round "?"]
[White "Wedekin, Philipp"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "C59"]
[PlyCount "66"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[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 Qd4 11. b4 Qxa1 12. Nc3 Bxb4 13. Bh5 Be6 14. 0-0 Bxc3 15. dxc3 Qxc3 16. Qd6 Nxh5 17. Ba3 Qxa3 18. Qxa3 Nc4 19. Nxc4 Bxc4 20. Rd1 Nf6 21. Qc5 Bd5 22. c4 Nd7 23. Qd4 Be6 24. Qxe4 0-0 25. Qxc6 Rfc8 26. Qe4 Nf6 27. Qd4 Rxc4 28. Qd2 Rac8 29. h3 Rc2 30. Qa5 Rxa2 31. Rd8+ Kh7 32. Qxa2 Rc1+ 33. Kh2 Bxa2 0-1

[Event "GER-chT U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "7"]
[White "Bardacheva, Anna"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "61"]
[EventDate "1997.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d6 3. Nc3 g6 4. e4 Bg7 5. Bc4 0-0 6. Qe2 c5 7. e5 Ne8 8. dxc5 dxc5 9. e6 f6 10. Be3 Qa5 11. Bd2 Qd8 12. Rd1 Nd6 13. Bf4 Bxe6 14. Qxe6+ Kh8 15. 0-0 Nc6 16. Bxd6 exd6 17. Qxd6 Qxd6 18. Rxd6 Rfe8 19. Rfd1 Ne7 20. Rd7 Nf5 21. Nb5 Rab8 22. Nc7 Rec8 23. Ne6 Bh6 24. Rf7 b5 25. g4 bxc4 26. gxf5 gxf5 27. Rdd7 Rxb2 28. Rxh7+ Kg8 29. Rhg7+ Bxg7 30. Rxg7+ Kh8 31. Nh4 1-0

[Event "GER-chT U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "2"]
[White "Buschmann, Stephan"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "E94"]
[PlyCount "60"]
[EventDate "1997.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. dxe5 dxe5 8. 0-0 Nbd7 9. Qc2 Qe7 10. Bg5 c6 11. Rfd1 a5 12. Rd2 Nc5 13. Rad1 h6 14. Bxf6 Bxf6 15. Na4 Nxa4 16. Qxa4 Be6 17. Qc2 Rad8 18. Qc3 Rxd2 19. Rxd2 Qc7 20. h3 Bg7 21. Qc2 Kh7 22. Nh2 f5 23. exf5 gxf5 24. Qd1 e4 25. g4 Be5 26. Nf1 Bf4 27. Ne3 Bxe3 28. fxe3 Qg3+ 29. Kh1 Qxh3+ 30. Kg1 Qxe3+ 0-1

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Diebig, Maja"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "D20"]
[PlyCount "60"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nc3 a6 4. a4 e5 5. dxe5 Qxd1+ 6. Nxd1 Nc6 7. Bf4 Nge7 8. e3 Be6 9. Nf3 Nd5 10. Bg3 Bb4+ 11. Nd2 0-0-0 12. Bxc4 Bxd2+ 13. Kxd2 Nb6+ 14. Ke1 Nxc4 15. b3 N4xe5 16. Bxe5 Nxe5 17. b4 Nd3+ 18. Ke2 Nxb4 19. Nc3 Bc4+ 20. Kf3 Rd2 21. Ne4 Bd5 22. Rab1 Na2 23. Kf4 Bxe4 24. Kxe4 Nc3+ 25. Kf3 Nxb1 26. Rxb1 Rhd8 27. Rb4 Ra2 28. Rf4 Rdd2 29. Kg3 f6 30. h4 h5 0-1

[Event "GER-chT U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "4"]
[White "Fliter, Irena"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "19"]
[EventDate "1997.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 Nc6 7. Bf4 b5 8. e5 Ne8 9. d5 b4 10. Ne4 0-1

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "5"]
[White "Heinz, Stefan"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "91"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 c6 5. Be3 b5 6. Qd2 Nbd7 7. h4 h5 8. 0-0-0 Nb6 9. Nh3 b4 10. Nb1 a5 11. c3 Rb8 12. Qc2 Qc7 13. Bd2 Be6 14. b3 bxc3 15. Nxc3 Bd7 16. Nf2 Rc8 17. Nd3 Rb8 18. Nb2 e6 19. Bg5 Nh7 20. Bf4 e5 21. dxe5 dxe5 22. Be3 Ba3 23. Bxb6 Qxb6 24. Kb1 Bxb2 25. Qxb2 Nf6 26. Na4 Qc7 27. Nc5 Bc8 28. Bc4 0-0 29. Rd2 Qe7 30. Nd3 Rd8 31. Rhd1 Re8 32. Qc3 a4 33. Nb2 axb3 34. Bxb3 Be6 35. Bxe6 fxe6 36. Qxe5 Rb5 37. Qc3 Rc5 38. Qe3 Kg7 39. Rc1 Rxc1+ 40. Kxc1 Ra8 41. Kb1 c5 42. Rc2 Ra5 43. Qc3 Qc7 44. Qb3 Qc6 45. Ka1 Nd7 46. Qc3+ 1-0

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "3"]
[White "Hoffmann, Paul"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "94"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 c6 5. Be2 b5 6. a3 a6 7. b4 Nbd7 8. Bf3 Bb7 9. Nge2 Nb6 10. d5 Nc4 11. Bg5 Bg7 12. Nd4 Qb6 13. dxc6 Bxc6 14. Nxc6 Ng4 15. 0-0 Bxc3 16. Ra2 Nf6 17. e5 dxe5 18. Nxe5 Rc8 19. Bxf6 Bxe5 20. Bxh8 Bxh8 21. c3 Bxc3 22. Rc2 Nxa3 23. Rc1 a5 24. bxa5 Qxa5 25. Qb3 Rc7 26. Rfd1 e6 27. Rd3 Bf6 28. Rcd1 b4 29. g3 Rc2 30. Re3 Bg5 31. Rd5 Rc1+ 32. Kg2 Qa6 33. Be2 Qa8 34. Ree5 Bf6 35. Re3 Rc3 36. Rxc3 bxc3 37. Bf3 exd5 38. Bxd5 Qa7 39. Qb4 c2 40. Bc6+ Kd8 41. Qd2+ Kc8 42. Qf4 Qc5 43. Qg4+ Kb8 44. Qd7 Qb6 45. Qd6+ Qc7 46. Qb4+ Kc8 47. Bd7+ Kxd7 0-1

[Event "GER-ch U18 NRW 9697"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "5"]
[White "Kaid, Almar"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2170"]
[PlyCount "75"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d5 4. exd5 Nf6 5. Bb5+ Bd7 6. Be2 0-0 7. Bf3 Bf5 8. h3 Bc8 9. Nge2 Nbd7 10. 0-0 Nb6 11. Nf4 a6 12. a4 Bd7 13. a5 Nc8 14. Re1 Nd6 15. Nd3 Rc8 16. Nc5 h6 17. Bf4 Rb8 18. Qc1 Nf5 19. Be5 Kh7 20. Qf4 Nd6 21. Re2 Qc8 22. Rae1 b6 23. Bxd6 exd6 24. Nxd7 Qxd7 25. Re7 Qd8 26. axb6 cxb6 27. Ra7 a5 28. Ree7 Kg8 29. Nb5 Ra8 30. Rac7 Rc8 31. Qxd6 Rxc7 32. Qxd8 Rxd8 33. Nxc7 Kf8 34. Re3 Rd7 35. Rc3 Ng8 36. Nb5 Ne7 37. d6 Nf5 38. Rc8+ 1-0

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "9"]
[White "Kapp, Martin"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "D20"]
[PlyCount "15"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 exd4 5. Bxc4 Bb4+ 6. Bd2 Be7 7. Ne5 Be6 8. Bxe6 1-0

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Karmann, Alexander"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "B08"]
[PlyCount "66"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. Nf3 0-0 6. Bc4 c6 7. 0-0 b5 8. Bxf6 Bxf6 9. Bd3 Bg4 10. Be2 Qb6 11. d5 b4 12. Na4 Qa5 13. c3 bxc3 14. Nxc3 Bxc3 15. bxc3 Qxc3 16. Rc1 Qa5 17. dxc6 Na6 18. Qd5 Nc5 19. e5 Be6 20. Qd4 Qxa2 21. Bc4 Bxc4 22. Rxc4 Ne6 23. Qd3 dxe5 24. Nxe5 Rfd8 25. Qc3 Nc7 26. h3 Rab8 27. Ng4 Qb2 28. Nh6+ Kf8 29. Qf3 f6 30. Rcc1 Rb3 31. Qf4 Qe5 32. Qc4 Qe6 33. Qf4 Rd6 1/2-1/2

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Kopp, Jan"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "D61"]
[PlyCount "32"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 5. e3 Nbd7 6. Nf3 Be7 7. Qc2 0-0 8. Bd3 Re8 9. Ne5 h6 10. Bf4 Nxe5 11. Bxe5 b6 12. cxd5 Nxd5 13. 0-0 Nxc3 14. bxc3 Bd6 15. f4 Bb7 16. Be4 Rc8 1/2-1/2

[Event "NRW op U16"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Migdal, Benedikt"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "E87"]
[PlyCount "99"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Nh5 8. g4 Nf4 9. Qd2 Qh4+ 10. Bf2 Qe7 11. Be3 f5 12. gxf5 gxf5 13. 0-0-0 Bh6 14. Kb1 Kh8 15. Nge2 fxe4 16. fxe4 Bg4 17. Rg1 Qh4 18. Nxf4 Bxf4 19. Re1 Bxe3 20. Qxe3 Rf3 21. Qd2 Na6 22. Be2 Rf2 23. Qd1 Bxe2 24. Rxe2 Rxh2 25. Rxh2 Qxh2 26. Qg4 Qh6 27. Ne2 Nc5 28. b4 Nd3 29. a3 Qf6 30. Qd7 Rg8 31. Rxg8+ Kxg8 32. Qc8+ Qf8 33. Qg4+ Kh8 34. Qh3 Nf4 35. Qf3 Qg7 36. Nxf4 Qg1+ 37. Kc2 exf4 38. Qxf4 Qg2+ 39. Qd2 Qxd2+ 40. Kxd2 h5 41. Ke3 Kg7 42. Kf3 Kg6 43. Kf4 Kf6 44. a4 h4 45. c5 h3 46. cxd6 cxd6 47. e5+ dxe5+ 48. Kg3 e4 49. Kxh3 Ke5 50. Kg3 0-1

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Mueller, S."]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "C13"]
[PlyCount "54"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 e6 4. e4 dxe4 5. Nxe4 Be7 6. Nf3 Nxe4 7. Bxe7 Qxe7 8. Bc4 Qb4+ 9. c3 Qxc4 10. Ne5 Qd5 11. 0-0 0-0 12. Re1 Nf6 13. Qf3 Qxf3 14. Nxf3 Nbd7 15. Ne5 Nxe5 16. Rxe5 Nd7 17. Re3 b6 18. Rd1 Bb7 19. a3 c5 20. b4 cxb4 21. axb4 a5 22. bxa5 Rxa5 23. g3 Rfa8 24. f4 Ra2 25. h4 Rg2+ 26. Kf1 Raa2 27. d5 Ba6+ 0-1

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Neumann, Lukas"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "66"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 g6 2. Nc3 Bg7 3. Nf3 d6 4. d3 Nf6 5. Be2 0-0 6. Be3 Ng4 7. Bd2 Nd7 8. 0-0 c5 9. h3 Nge5 10. Nd5 Nxf3+ 11. Bxf3 Bxb2 12. Rb1 Bg7 13. Re1 e6 14. Ne3 Ne5 15. Ng4 Rb8 16. Rb3 c4 17. Ra3 cxd3 18. cxd3 a6 19. Rb3 Bd7 20. Ra3 Bb5 21. Be2 Nxg4 22. Bxg4 Bb2 23. Bh6 Bxa3 24. Qa1 e5 25. f4 Re8 26. fxe5 dxe5 27. Rf1 Qd4+ 28. Qxd4 exd4 29. Bd1 Rbc8 30. Bb3 Rc7 31. Rf3 a5 32. h4 a4 33. Bd5 Bc6 0-1

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Bolczek, Malte"]
[Result "1/2-1/2"]
[ECO "D75"]
[PlyCount "33"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. c4 g6 4. Nc3 cxd4 5. Nxd4 Bg7 6. g3 d5 7. Bg2 e6 8. 0-0 0-0 9. cxd5 Nxd5 10. Nxd5 exd5 11. Be3 Nc6 12. Rc1 Nxd4 13. Bxd4 Be6 14. Bxg7 Kxg7 15. Qd4+ Kg8 16. Rfd1 Qd7 17. e4 1/2-1/2

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "2"]
[White "Retta, Thorben"]
[Black "Bujak, Dirk"]
[Result "1-0"]
[ECO "E33"]
[PlyCount "51"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 Nc6 2. d4 d5 3. c4 e6 4. Nc3 Bb4 5. Qc2 Nf6 6. Bg5 h6 7. Bh4 e5 8. dxe5 g5 9. Nxg5 hxg5 10. Bxg5 Nxe5 11. 0-0-0 Rh5 12. f4 Nxc4 13. Nxd5 Rxg5 14. Nxb4 Nd5 15. Qxc4 Be6 16. fxg5 Qxg5+ 17. Kb1 Ne3 18. Qc1 a5 19. Rd3 axb4 20. Qxe3 Qxe3 21. Rxe3 Rxa2 22. Rxe6+ fxe6 23. Kxa2 c5 24. h4 c4 25. h5 b3+ 26. Ka3 1-0

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Draeger, Thomas"]
[Result "1/2-1/2"]
[ECO "A08"]
[PlyCount "5"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 1/2-1/2

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "6"]
[White "Retta, Thorben"]
[Black "Friedt, Eduard"]
[Result "1-0"]
[ECO "E08"]
[PlyCount "107"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. c4 c6 5. d4 Be7 6. 0-0 Nbd7 7. Qc2 0-0 8. cxd5 cxd5 9. Bf4 Ne8 10. Nc3 Qb6 11. Rfc1 Bd6 12. Bd2 Ndf6 13. Rab1 Ne4 14. Nxe4 dxe4 15. Qxe4 Nf6 16. Qd3 Bd7 17. e3 Rfc8 18. Ne5 Bxe5 19. dxe5 Bb5 20. Qb3 Nd7 21. a4 Ba6 22. Qxb6 Nxb6 23. b3 Nd7 24. Rc3 Rab8 25. f4 g6 26. Rbc1 b6 27. b4 Rxc3 28. Rxc3 Rc8 29. b5 Rxc3 30. Bxc3 Bc8 31. Bb4 a6 32. Bd6 Kg7 33. Kf2 f6 34. Ke2 fxe5 35. fxe5 axb5 36. axb5 Kf7 37. Kd3 Ke8 38. Bc6 Kd8 39. Kd4 h6 40. Kc4 g5 41. g4 Ke8 42. Bc7 Ke7 43. Bxd7 Kxd7 44. Bd6 Ke8 45. e4 Bb7 46. Kd4 Bc8 47. Bc7 Bb7 48. Bxb6 Kf7 49. Bd8 Kg6 50. b6 h5 51. h3 hxg4 52. hxg4 Bc6 53. Kc5 Bxe4 54. Kd6 1-0

[Event "GER-ch U18 NRW 9697"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Gebauer, Thomas"]
[Result "1-0"]
[ECO "D06"]
[PlyCount "71"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nf6 5. f3 e6 6. Be3 Bb4+ 7. Nc3 0-0 8. a3 Ba5 9. Bc4 c6 10. Nge2 Nbd7 11. 0-0 b5 12. Ba2 Bb6 13. b4 h6 14. Qd2 e5 15. Rfd1 exd4 16. Bxd4 Bb7 17. Kh1 Qc7 18. Rac1 Rad8 19. Nxb5 Qb8 20. Bxb6 Nxb6 21. Nbd4 Rd7 22. Qc2 Rc8 23. Nf5 Rxd1+ 24. Rxd1 Rd8 25. Ned4 Rd7 26. Nb3 Rxd1+ 27. Qxd1 Nbd7 28. Nd6 Ba6 29. Na5 Ne5 30. Qd4 Nfd7 31. Nxf7 Nxf7 32. Qxd7 Qf8 33. Qxa7 Bb5 34. Qd7 g5 35. e5 Qg7 36. Qe8+ 1-0

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "10"]
[White "Retta, Thorben"]
[Black "Gehlhaar, Christian"]
[Result "0-1"]
[ECO "E07"]
[PlyCount "90"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 e6 3. Bg2 Nf6 4. c4 Be7 5. 0-0 0-0 6. cxd5 exd5 7. d4 c6 8. Nc3 Nbd7 9. Qc2 Re8 10. Bf4 Nf8 11. Rfc1 Ne6 12. Bd2 g6 13. Rab1 Ng7 14. Ra1 Bf5 15. Qd1 Ne4 16. Nxe4 dxe4 17. Ne1 Qxd4 18. e3 Qd7 19. b4 Rad8 20. Bc3 Qxd1 21. Rxd1 Bf8 22. a3 Rxd1 23. Rxd1 Bc8 24. Bd4 a6 25. Bb6 f5 26. Bf1 Be6 27. Nc2 Bb3 28. Rd2 Ne6 29. Nd4 Nxd4 30. Rxd4 Kf7 31. Bh3 Bg7 32. Rd7+ Re7 33. Rd8 Be6 34. Kf1 Rd7 35. Rb8 Be5 36. Rd8 Rxd8 37. Bxd8 Bb2 38. a4 Bc4+ 39. Kg1 Bb3 40. Bb6 Bxa4 41. Bf1 Bb5 42. Bxb5 axb5 43. Kf1 Ke6 44. Ke2 Kd5 45. Kd2 Kc4 0-1

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Ghaledar, Payam"]
[Result "1-0"]
[ECO "A08"]
[PlyCount "85"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. 0-0 Nc6 5. d3 g6 6. Nbd2 Bg7 7. e4 dxe4 8. dxe4 Bg4 9. h3 Bxf3 10. Bxf3 e5 11. c3 0-0 12. Qc2 Qd7 13. Kh2 Rad8 14. Be2 a6 15. a4 Bh6 16. Rd1 Qc7 17. Nf1 Bg7 18. Be3 Nd7 19. Bg4 b6 20. Be2 a5 21. Nd2 Nf6 22. Nc4 Rxd1 23. Rxd1 Rd8 24. Rd3 Ne8 25. Qd1 Rxd3 26. Qxd3 Bf8 27. Bg4 Nf6 28. Bf3 Ne8 29. Na3 Nd6 30. Be2 Be7 31. Qd5 Bf6 32. Bd1 Kf8 33. Bb3 h5 34. Bh6+ Bg7 35. Bg5 f6 36. Qg8+ Ke7 37. Qxg7+ Kd8 38. Bxf6+ Kc8 39. Qxc7+ Kxc7 40. Nb5+ Nxb5 41. axb5 Nd8 42. Bxe5+ Kc8 43. Bd5 1-0

[Event "GER-chT U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "3"]
[White "Retta, Thorben"]
[Black "Gossmann, Gera"]
[Result "1/2-1/2"]
[ECO "B08"]
[PlyCount "34"]
[EventDate "1997.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. Bc4 0-0 6. Qe2 e5 7. dxe5 dxe5 8. Nxe5 Qe7 9. Nd3 Nc6 10. Bg5 Nd4 11. Nd5 Qe8 12. Qd1 Nxd5 13. Bxd5 c6 14. c3 cxd5 15. cxd4 Qxe4+ 16. Kf1 f6 17. Be3 b6 1/2-1/2

[Event "NRW op U16"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Holtmannspoetter, Stefan"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "67"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. Bc4 0-0 6. Qe2 Bg4 7. h3 Bxf3 8. Qxf3 Nbd7 9. 0-0 c5 10. Be3 Qc8 11. Qe2 a6 12. a4 Qc7 13. a5 Rac8 14. d5 Rfe8 15. f4 e6 16. dxe6 fxe6 17. f5 gxf5 18. exf5 d5 19. fxe6 dxc4 20. exd7 Qxd7 21. Qxc4+ Kh8 22. Bf4 Qd4+ 23. Qxd4 cxd4 24. Na4 Rxc2 25. Rac1 Ree2 26. Rxc2 Rxc2 27. Rc1 Rxc1+ 28. Bxc1 Kg8 29. Nc5 Kf7 30. Nxb7 Ke6 31. Nc5+ Kd5 32. Nxa6 Kc4 33. Nc7 Ne4 34. a6 1-0

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Ostrowski, David"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "55"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 Be7 6. e3 0-0 7. Qc2 h6 8. Bh4 c6 9. Bd3 Nb6 10. cxd5 exd5 11. 0-0 Nh5 12. Bxe7 Qxe7 13. Rfc1 Re8 14. a3 a5 15. Na4 Nd7 16. Nc5 Nxc5 17. Qxc5 Qxc5 18. Rxc5 Re7 19. Nd2 Bd7 20. Rac1 Be8 21. Bf5 Rc7 22. Rxd5 g6 23. Bh3 f5 24. Re5 Bf7 25. g3 Nf6 26. Bg2 Bd5 27. Bxd5+ Nxd5 28. Rxd5 1-0

[Event "GER-chT U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "1"]
[White "Retta, Thorben"]
[Black "Pangerl, Michael"]
[Result "1-0"]
[ECO "D15"]
[PlyCount "19"]
[EventDate "1997.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Bg4 5. Ne5 Bh5 6. Qb3 Nbd7 7. cxd5 Nxe5 8. dxe5 Nxd5 9. Nxd5 cxd5 10. e4 1-0

[Event "GER-chT U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "5"]
[White "Retta, Thorben"]
[Black "Petzold, Golo"]
[Result "1-0"]
[ECO "D13"]
[PlyCount "95"]
[EventDate "1997.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 5. cxd5 cxd5 6. Nf3 Nc6 7. e3 Be7 8. a3 0-0 9. Bd3 h6 10. Bh4 a6 11. 0-0 Nd7 12. Bg3 Nb6 13. Qc2 Bd6 14. Bxd6 Qxd6 15. b4 Nd7 16. b5 axb5 17. Nxb5 Qe7 18. e4 Nf6 19. e5 Ne8 20. Nd2 Nc7 21. Nxc7 Qxc7 22. Rfc1 Qe7 23. Qb2 f6 24. exf6 Qxf6 25. Nf3 g5 26. Rc5 g4 27. Ne5 Nxe5 28. dxe5 Qf4 29. Rc7 Rf7 30. Qc2 Rxc7 31. Qxc7 Qf7 32. Qd8+ Qf8 33. Qh4 Qg7 34. Rb1 Rxa3 35. Qh5 Rxd3 36. Qe8+ Kh7 37. Qxc8 Qxe5 38. Rxb7+ Kg6 39. Qe8+ Kg5 40. Qg8+ Kf4 41. Rf7+ Qf5 42. Rxf5+ exf5 43. Qb8+ Kg5 44. g3 Rd1+ 45. Kg2 d4 46. Qd6 d3 47. h4+ Kh5 48. Qf6 1-0

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "7"]
[White "Retta, Thorben"]
[Black "Preusser, Gernot"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "25"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. Bc4 Nbd7 6. Bxf7+ Kxf7 7. Ng5+ Kg8 8. Ne6 Qe8 9. Nxc7 Qd8 10. Nxa8 b6 11. Qe2 Bb7 12. Qc4+ Kf8 13. Nc7 1-0

[Event "NRW op U16"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Schoenberger, Markus"]
[Result "1/2-1/2"]
[ECO "D79"]
[PlyCount "23"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. d4 d5 5. c4 c6 6. 0-0 0-0 7. cxd5 cxd5 8. Nc3 Nc6 9. a3 Bf5 10. Ne5 Rc8 11. Bf4 e6 12. Qd2 1/2-1/2

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "4"]
[White "Retta, Thorben"]
[Black "Winkler, Mathias"]
[Result "1/2-1/2"]
[ECO "A84"]
[PlyCount "27"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. c4 f5 4. Nc3 Nf6 5. Bf4 c6 6. Qc2 Be7 7. e3 0-0 8. Bd3 Ne4 9. h3 Nd7 10. Qb3 Ndf6 11. Ne5 Qe8 12. f3 Nxc3 13. Qxc3 Nh5 14. h4 1/2-1/2

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Zaragatski, Ilja"]
[Result "0-1"]
[ECO "A39"]
[PlyCount "104"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. c4 c5 6. d4 cxd4 7. Nxd4 Nc6 8. Nc3 Nxd4 9. Qxd4 d6 10. Qd3 a6 11. h3 Rb8 12. a4 Nd7 13. e4 Ne5 14. Qe2 Be6 15. Nd5 Rc8 16. Bg5 f6 17. Be3 Nxc4 18. Bd4 Bxd5 19. exd5 Qd7 20. f4 f5 21. Bxg7 Kxg7 22. a5 Qb5 23. Rfe1 Rfe8 24. b3 Qxb3 25. Rab1 Qxg3 26. Rxb7 Qxf4 27. Rxe7+ Rxe7 28. Qxe7+ Kh6 29. Qb7 Rh8 30. Qxa6 Ne3 31. Qe2 Nxg2 32. Kxg2 Ra8 33. a6 Qe4+ 34. Qxe4 fxe4 35. Ra1 Kg5 36. Kg3 Ra7 37. h4+ Kf5 38. Ra5 Ke5 39. Kf2 Kd4 40. Ke2 Kc4 41. Ke3 Kb4 42. Ra1 Kb5 43. Kd4 Rxa6 44. Rb1+ Ka5 45. Kc4 e3 46. Rb5+ Ka4 47. Rb1 Ka3 48. Ra1+ Kb2 49. Rxa6 e2 50. Rb6+ Kc2 51. Ra6 e1Q 52. Ra2+ Kb1 0-1

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Zaragatski, Ilja"]
[Result "0-1"]
[ECO "A08"]
[PlyCount "54"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d3 d5 6. Nbd2 c5 7. c4 Nc6 8. a3 e6 9. cxd5 Nxd5 10. Rb1 Qe7 11. Qc2 b6 12. Ne4 Bb7 13. Bd2 Rac8 14. Nc3 Rfe8 15. Nxd5 exd5 16. e3 f5 17. Rfe1 Qd7 18. Qb3 Kh8 19. Ng5 Ne5 20. d4 cxd4 21. exd4 Nc4 22. Bc3 Bc6 23. Qa2 Bf6 24. Nf3 Qg7 25. b3 Nd6 26. Ne5 Bb7 27. f3 Rxc3 0-1

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "11"]
[White "Riegel, Frank"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "B09"]
[PlyCount "72"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. f4 d6 4. Nf3 Nf6 5. Nc3 c5 6. dxc5 Qa5 7. Bd2 Qxc5 8. Bd3 0-0 9. Qe2 Bd7 10. 0-0-0 a6 11. a3 b5 12. Be3 Qc7 13. h3 Rc8 14. e5 dxe5 15. fxe5 Nh5 16. Nd5 Qd8 17. Bb6 Qf8 18. Nc7 Rxc7 19. Bxc7 Ng3 20. Qf2 Nxh1 21. Rxh1 Nc6 22. Re1 Qc8 23. Bb6 Rb8 24. b4 Bf5 25. Bc5 a5 26. Bxf5 Qxf5 27. g4 Qf4+ 28. Qe3 Qc4 29. Qe4 Qe6 30. Nd4 Nxd4 31. Qxd4 Qa2 32. bxa5 Bh6+ 33. Kd1 Qb1+ 34. Ke2 Qxc2+ 35. Kf1 Qh2 36. Qd3 Rc8 1/2-1/2

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Scalisi, Carmelo"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "E61"]
[PlyCount "80"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e3 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nf6 5. Nf3 0-0 6. Bd3 Re8 7. Qc2 e5 8. 0-0 Bg4 9. Nd2 Nc6 10. Nb3 h6 11. a3 Nh7 12. h3 Bd7 13. d5 Ne7 14. Ne2 f5 15. Ng3 Kh8 16. Bd2 h5 17. Rfe1 Rg8 18. Be2 Nf6 19. Nc1 Qe8 20. Qd1 Qf7 21. Nd3 Bf8 22. Bc3 Kg7 23. f4 e4 24. Nf2 h4 25. Nh5+ gxh5 26. Bxh5 Ng6 27. Ng4 fxg4 28. hxg4 Kh7 29. f5 Nxh5 30. fxg6+ Qxg6 31. Rf1 Bxg4 32. Qc2 Bf3 33. Rf2 h3 34. Qa4 Bxg2 35. Qd7+ Kh6 36. Qe6 Qxe6 37. dxe6 Bf3+ 38. Kh2 Rg2+ 39. Rxg2 hxg2 40. Kh3 Be7 0-1

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "8"]
[White "Schulte, Stefanie"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "77"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 c6 5. Be3 b5 6. Qd2 Nbd7 7. Bd3 a6 8. Nge2 Qc7 9. g4 c5 10. dxc5 dxc5 11. Ng3 Ne5 12. Be2 h6 13. Nd5 Qc6 14. Bf4 Nxd5 15. exd5 Qc7 16. Qe3 Bg7 17. Ne4 c4 18. 0-0-0 Qa5 19. Nc3 Nd3+ 20. Bxd3 cxd3 21. d6 Be6 22. Rxd3 b4 23. Nd5 0-0 24. Nxe7+ Kh7 25. Rhd1 Qxa2 26. Be5 f6 27. Bd4 Bc4 28. d7 Bxd3 29. Qxd3 Qf7 30. Bc5 f5 31. Nc6 Qa2 32. Bxf8 Bxb2+ 33. Kd2 Bc3+ 34. Ke2 Qe6+ 35. Qe3 Qxc6 36. Qe7+ Kg8 37. d8Q Rxd8 38. Rxd8 Qb5+ 39. Kf2 1-0

[Event "GER-ch U13"]
[Site "Friedrichroda"]
[Date "1997.??.??"]
[Round "1"]
[White "Schumacher, Christoff"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "D20"]
[PlyCount "37"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 Bg4 5. d5 Bc5 6. Bxc4 f5 7. Nc3 Qe7 8. 0-0 Nf6 9. Bg5 h6 10. Bxf6 gxf6 11. exf5 Bxf5 12. Nh4 Bh7 13. Qh5+ Kd8 14. Qxh6 Qe8 15. Qxf6+ Be7 16. Qxe5 Bxh4 17. Rfe1 Qf8 18. g3 Bg5 19. Qxg5+ 1-0

[Event "NRW op U16"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Seel, Christian"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "A34"]
[PlyCount "71"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 e5 5. Bg2 Be7 6. 0-0 0-0 7. d3 d5 8. cxd5 Nxd5 9. Nxe5 Nxc3 10. Nxc6 Nxd1 11. Nxd8 Nxf2 12. Nxb7 Bxb7 13. Rxf2 Bxg2 14. Kxg2 Rab8 15. b3 Bf6 16. Rb1 Bd4 17. e3 Bf6 18. Bb2 Bg5 19. Kf3 Rfe8 20. Re2 Rbd8 21. Rd1 Rd7 22. h4 Be7 23. Red2 Red8 24. Be5 Rd5 25. d4 cxd4 26. Rxd4 Rxd4 27. Rxd4 Rxd4 28. exd4 f6 29. Bb8 a6 30. Ke4 Kf7 31. Kd5 Bb4 32. Kc6 Ke6 33. d5+ Ke7 34. d6+ Kd8 35. Bc7+ Kc8 36. d7# 1-0

[Event "GER-chT U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "6"]
[White "Seifert, Frank"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "C66"]
[PlyCount "29"]
[EventDate "1997.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 d6 5. d4 exd4 6. Nxd4 Bd7 7. Nc3 Be7 8. f4 0-0 9. Nxc6 bxc6 10. Ba4 d5 11. e5 Bc5+ 12. Kh1 Ng4 13. Qf3 Nxh2 14. Qe2 Nxf1 15. Qxf1 0-1

[Event "NRW op U16"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Shahin, Tino"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "A35"]
[PlyCount "88"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. g3 e5 4. Nc3 f5 5. d3 Nf6 6. Bg2 Be7 7. 0-0 d6 8. Ne1 Be6 9. Nc2 d5 10. cxd5 Nxd5 11. Nxd5 Bxd5 12. Bxd5 Qxd5 13. Ne3 Qe6 14. f4 e4 15. Re1 0-0 16. a3 Rad8 17. Qc2 exd3 18. exd3 Nd4 19. Qg2 Nb3 20. Nc2 Qd7 21. Rb1 Bf6 22. Rd1 c4 23. Ne1 Nc5 24. Qc2 cxd3 25. Qc4+ Qd5 26. Qxd5+ Rxd5 27. Be3 Bd4 28. Bxd4 Rxd4 29. Rd2 Rfd8 30. Rbd1 a5 31. Kf2 Ne4+ 32. Ke3 Nxd2 33. Rxd2 Re4+ 34. Kf2 Rde8 35. Nxd3 Rd8 36. Rd1 b5 37. b3 Red4 38. Ke3 a4 39. b4 Rc4 40. Kd2 h6 41. h4 g6 42. Ke2 Kg7 43. Ke3 Rc3 44. Ke2 Rxa3 0-1

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Smolka, Alexander"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "D21"]
[PlyCount "24"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 c5 4. e3 cxd4 5. Qxd4 Qxd4 6. Nxd4 a6 7. Bxc4 e5 8. Nf3 Nc6 9. a3 Be7 10. Nc3 Nf6 11. 0-0 0-0 12. h3 h6 1/2-1/2

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Surowiecki, Roman"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "76"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Bc4 d6 4. Nf3 Nf6 5. Nc3 c6 6. Be3 0-0 7. Qd2 b5 8. Be2 b4 9. Nd1 Nxe4 10. Qxb4 a5 11. Qa4 Bd7 12. c3 c5 13. Qc2 cxd4 14. Bxd4 Nf6 15. 0-0 Nc6 16. Re1 Nxd4 17. Nxd4 Qb6 18. Ne3 Rab8 19. Nc4 Qc7 20. Rad1 Ng4 21. Nf3 Bc6 22. b3 Rfc8 23. Nd4 Ne5 24. Nxc6 Nxc6 25. Bf3 Ne5 26. Nxe5 Bxe5 27. c4 a4 28. Bd5 e6 29. Bf3 axb3 30. axb3 d5 31. Rc1 Bxh2+ 32. Kh1 Bf4 33. Rcd1 dxc4 34. Re4 cxb3 35. Qxc7 Bxc7 36. Rb1 Bd8 37. Re3 b2 38. Re2 Rc1+ 0-1

[Event "NRW op U16"]
[Site "Germany"]
[Date "1997.??.??"]
[Round "?"]
[White "Tan, Stephan"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "C56"]
[PlyCount "24"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 d5 6. exd5 Nxd5 7. Nxd4 Be7 8. Nc3 Nxc3 9. bxc3 0-0 10. Bf4 Bd6 11. Nxc6 bxc6 12. Qf3 Qf6 1/2-1/2

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Zachey, Arne"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "E70"]
[PlyCount "66"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 g6 4. c4 Bg7 5. Ne2 0-0 6. Nbc3 e5 7. d5 Nbd7 8. Be3 h6 9. f3 a5 10. Qd2 Kh7 11. 0-0-0 Ne8 12. g4 c6 13. h4 Nc7 14. f4 exf4 15. Bxf4 Ne5 16. Bxh6 Bxh6 17. g5 Bg7 18. h5 Nxd3+ 19. Qxd3 Qxg5+ 20. Kb1 cxd5 21. hxg6+ Kg8 22. gxf7+ Rxf7 23. exd5 Qf6 24. Rdf1 Bf5 25. Rxf5 Qxf5 26. Qxf5 Rxf5 27. Ng3 Rf2 28. Nge4 Rg2 29. Nxd6 Bxc3 30. bxc3 Rf8 31. Re1 Rff2 32. Ka1 Rxa2+ 33. Kb1 Rgb2+ 0-1

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1996.??.??"]
[Round "?"]
[White "Bardacheva, Anna"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "A25"]
[PlyCount "122"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. e3 d6 6. Nge2 Be6 7. b3 Qc8 8. 0-0 Nge7 9. Bb2 0-0 10. d4 exd4 11. exd4 Bh3 12. f4 Bxg2 13. Kxg2 Nf5 14. Nd5 Nb4 15. Qd2 Nxd5 16. cxd5 Re8 17. Rf3 Qd7 18. h3 Qe7 19. Ng1 Ne3+ 20. Kh2 Nxd5 21. g4 c6 22. g5 Ne3 23. Rb1 d5 24. Rg3 Nf5 25. Rf3 Qd7 26. Rd3 f6 27. gxf6 Bxf6 28. Nf3 Nd6 29. Ne5 Qf5 30. Rg1 Ne4 31. Qe3 Rf8 32. Ng4 Bg7 33. Bc1 Rae8 34. Qf3 Ng5 35. Qd1 Ne4 36. Qf3 Re7 37. Ba3 c5 38. dxc5 Qxf4+ 39. Qxf4 Rxf4 40. Rxd5 h5 41. Ne3 Be5 42. Rxe5 Rxe5 43. Rxg6+ Kh7 44. Rg2 Rf2 45. b4 Rxg2+ 46. Nxg2 Re6 47. Nf4 Ra6 48. Bc1 Rxa2+ 49. Ng2 Ra4 50. b5 Nxc5 51. b6 a6 52. Be3 Nd7 53. Nf4 Ra5 54. Ne6 Re5 55. Ng5+ Kg6 56. Bf4 Rxg5 57. Bxg5 Kxg5 58. Kg3 a5 59. h4+ Kf5 60. Kf3 a4 61. Ke3 a3 0-1

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1996.??.??"]
[Round "?"]
[White "Bardacheva, Anna"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "A29"]
[PlyCount "100"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. Nf3 Bg7 6. 0-0 0-0 7. d4 exd4 8. Nxd4 h6 9. a3 Nxd4 10. Qxd4 Qe7 11. Qd2 a6 12. Rb1 d6 13. b4 Rb8 14. Bb2 Be6 15. Nd5 Nxd5 16. cxd5 Bf5 17. e4 Bd7 18. Bxg7 Kxg7 19. Qc3+ Kh7 20. Qxc7 Rfc8 21. Qb6 Rc2 22. Rfc1 Rxc1+ 23. Rxc1 Bb5 24. Qc7 Qf8 25. h4 h5 26. Rc3 Be2 27. Re3 Bd1 28. e5 dxe5 29. Rxe5 Re8 30. Rxe8 Qxe8 31. Kh2 Kg7 32. Qxb7 Qe2 33. Qb6 Ba4 34. Qd4+ Kg8 35. d6 Qe8 36. Qe4 Qxe4 37. Bxe4 Kf8 38. Bb7 Bb5 39. Kg2 Ke8 40. Bc8 Kd8 41. Bh3 Bd7 42. Bxd7 Kxd7 43. Kf3 Kxd6 44. Ke4 f6 45. Kd4 g5 46. a4 Kc6 47. b5+ axb5 48. axb5+ Kxb5 49. Ke4 Kc4 50. Kf5 Kd5 1-0

[Event "GER-ch U18 NRW 9697"]
[Site "Germany"]
[Date "1996.??.??"]
[Round "2"]
[White "Braje, Monika"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "89"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. Nf3 0-0 6. Bc4 c6 7. e5 Ng4 8. exd6 exd6 9. Bg5 Re8+ 10. Ne2 Qa5+ 11. Bd2 Qc7 12. 0-0 h6 13. Bf4 b5 14. Bb3 a5 15. a4 b4 16. h3 Nf6 17. Re1 Be6 18. c4 bxc3 19. Nxc3 Bxb3 20. Rxe8+ Nxe8 21. Qxb3 Nf6 22. Rc1 Na6 23. Qc4 Rb8 24. Qxa6 Rxb2 25. Nb5 Qe7 26. Nxd6 Nd5 27. Bg3 Nb4 28. Qc8+ Kh7 29. Re1 Qf6 30. Be5 Qe6 31. Qxe6 fxe6 32. Bxg7 Kxg7 33. Rxe6 Ra2 34. Ne5 g5 35. Nf5+ Kf8 36. Rxh6 Kg8 37. Nxc6 Rxa4 38. Nxb4 axb4 39. Rb6 Ra1+ 40. Kh2 Rb1 41. d5 Kf8 42. d6 Ke8 43. Rb7 b3 44. d7+ Kd8 45. Nd4 1-0

[Event "GER-ch U18 NRW 9697"]
[Site "Germany"]
[Date "1996.??.??"]
[Round "1"]
[White "Cleven, Jan Daniel"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "A25"]
[PlyCount "100"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nc6 3. Bg2 g6 4. e3 Bg7 5. Ne2 Nge7 6. 0-0 0-0 7. Nbc3 d6 8. d4 exd4 9. Nxd4 Nxd4 10. exd4 Nc6 11. Be3 Bf5 12. Qd2 Qd7 13. Rfe1 Bh3 14. Nd5 Bxg2 15. Kxg2 Rfe8 16. Re2 Nxd4 17. Bxd4 Rxe2 18. Qxe2 Bxd4 19. Rd1 Bg7 20. Kg1 Re8 21. Qd2 Re4 22. b3 Rd4 23. Qe1 Rxd1 24. Qxd1 c6 25. Ne3 Qe6 26. h4 Be5 27. Ng4 Kg7 28. Nxe5 Qxe5 29. Qg4 d5 30. cxd5 cxd5 31. h5 Qe1+ 32. Kg2 Qe4+ 33. Qxe4 dxe4 34. hxg6 hxg6 35. f3 f5 36. fxe4 fxe4 37. Kf2 Kf6 38. Ke3 Ke5 39. a3 g5 40. g4 a5 41. b4 axb4 42. axb4 b5 43. Ke2 Kf4 44. Kf2 Kxg4 45. Ke3 Kf5 46. Kf2 Kf4 47. Ke2 e3 48. Kf1 Kf3 49. Kg1 e2 50. Kh2 e1Q 0-1

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1996.??.??"]
[Round "?"]
[White "Eissing, Christoph"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "C25"]
[PlyCount "23"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. g3 Bc5 4. Bg2 d6 5. d3 Be6 6. Nge2 Qd7 7. h3 Nge7 8. f4 f6 9. f5 Bf7 10. g4 0-0-0 11. Bd2 d5 12. Ng3 1/2-1/2

[Event "GER-ch U13"]
[Site "Pinneberg"]
[Date "1996.??.??"]
[Round "10"]
[White "Fischer, Tino"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "C25"]
[PlyCount "106"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 Bc5 4. Qg4 g6 5. Qf3 Nf6 6. d3 Nd4 7. Qd1 d6 8. Bg5 h6 9. Be3 Be6 10. Bxe6 fxe6 11. Nce2 Qe7 12. c3 Nxe2 13. Qxe2 Bb6 14. Nf3 0-0-0 15. a4 g5 16. Bxb6 axb6 17. a5 b5 18. a6 b6 19. d4 exd4 20. Qxb5 Qe8 21. Nxd4 Qxb5 22. Nxb5 Nxe4 23. Ke2 Rhf8 24. f3 Nf6 25. Kd2 e5 26. Kc2 Nd5 27. Kd2 c6 28. Na3 Rf4 29. b3 Kc7 30. Rhf1 Rdf8 31. Nc2 Kb8 32. Nb4 Nxb4 33. cxb4 Rxb4 34. Kc3 c5 35. Rfd1 Kc7 36. Rd3 Ra8 37. h3 Kc6 38. g3 Rd4 39. Rxd4 exd4+ 40. Kd3 b5 41. f4 gxf4 42. gxf4 Kd5 43. f5 Ke5 44. f6 Kxf6 45. Ke4 Ke6 46. b4 Re8 47. a7 Kd7+ 48. Kd3 Ra8 49. Ke4 c4 50. Ra6 Kc7 51. Kd5 d3 52. Rxd6 c3 53. Kc5 Rxa7 0-1

[Event "GER-ch U13"]
[Site "Pinneberg"]
[Date "1996.??.??"]
[Round "1"]
[White "Gergs, Sebastian"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "84"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bc4 0-0 6. 0-0 c6 7. Bb3 Nbd7 8. Be3 Qc7 9. Ba4 b5 10. Bb3 b4 11. Ne2 Nxe4 12. Qd3 Nef6 13. c3 bxc3 14. bxc3 Nb6 15. Nf4 Bf5 16. Qd2 Ng4 17. h3 Nxe3 18. Qxe3 h6 19. Nd3 Nd5 20. Bxd5 cxd5 21. Rac1 Rfc8 22. Qd2 Qc4 23. Nb2 Qxa2 24. Ra1 Qb3 25. Rfc1 Rab8 26. Rab1 Bxb1 27. Rxb1 Qxc3 28. Qxc3 Rxc3 29. Kh2 Rc2 30. g4 Rcxb2 31. Rxb2 Rxb2 32. Kg3 a5 33. Ne1 Bxd4 34. Nd3 Rb3 35. f3 Rxd3 36. h4 a4 37. Kg2 a3 38. Kg3 a2 39. Kg2 a1Q 40. Kg3 Be5+ 41. Kg2 Rd2+ 42. Kh3 Rh2# 0-1

[Event "GER-ch U13"]
[Site "Pinneberg"]
[Date "1996.??.??"]
[Round "6"]
[White "Gerland, Felix"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "A25"]
[PlyCount "75"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 Nge7 6. Nge2 d6 7. 0-0 0-0 8. b3 Bf5 9. d4 exd4 10. exd4 Qc8 11. Bb2 Bh3 12. Qd2 Bxg2 13. Kxg2 Nf5 14. d5 Ne5 15. Rfe1 Re8 16. Nf4 Qd7 17. Nh3 Re7 18. Re2 Rae8 19. Rae1 Ng4 20. Ne4 h6 21. Ng1 Qc8 22. h3 Ne5 23. f4 Nd7 24. Bxg7 Nxg7 25. Nf6+ Nxf6 26. Rxe7 Rxe7 27. Rxe7 Qd8 28. Re2 Nf5 29. Nf3 Nd7 30. Qe1 Qf6 31. Re8+ Kh7 32. g4 Ng7 33. Re7 Nc5 34. Qe3 h5 35. Ng5+ Kg8 36. Rxf7 Qb2+ 37. Kf3 hxg4+ 38. hxg4 1-0

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1996.??.??"]
[Round "?"]
[White "Happ, Dominik"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "95"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. d3 g6 4. Nc3 Bg7 5. Be2 0-0 6. 0-0 c6 7. Bf4 h6 8. d4 b5 9. Qd2 Kh7 10. Qe3 Nh5 11. d5 b4 12. Nd1 c5 13. c3 Nxf4 14. Qxf4 a5 15. Rb1 Nd7 16. c4 a4 17. Nd2 Ne5 18. Ne3 Qc7 19. Ng4 Nxg4 20. Bxg4 Bxg4 21. Qxg4 Rfb8 22. Qf3 Kg8 23. Qg4 Qb6 24. Qh4 Ra7 25. Qg4 Qa6 26. Qh3 Qa5 27. Rfd1 Re8 28. Qg3 Be5 29. Qh4 Kh7 30. f4 Bd4+ 31. Kf1 Qa6 32. f5 Be3 33. Rbc1 Qa5 34. Ke1 Bd4 35. Rb1 Rg8 36. g4 gxf5 37. exf5 Raa8 38. Nf3 b3+ 39. Kf1 bxa2 40. Ra1 Bf6 41. Qg3 Qb4 42. Nd2 Bg5 43. Qd3 Bxd2 44. Rxd2 Qb3 45. h3 Rab8 46. Qc2 Qxh3+ 47. Rg2 Rxg4 48. Rxa2 0-1

[Event "GER-chT U13"]
[Site "Verden"]
[Date "1996.??.??"]
[Round "4"]
[White "Huesken, Christian"]
[Black "Retta, Thorben"]
[Result "0-1"]
[ECO "C57"]
[PlyCount "13"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nh5 6. Bb3 h6 7. Nf3 0-1

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1996.??.??"]
[Round "?"]
[White "Kandetzki, Christoph"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "A52"]
[PlyCount "133"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. Bg5 Be7 6. Bxe7 Qxe7 7. e3 0-0 8. Be2 Ngxe5 9. 0-0 d6 10. Nc3 Be6 11. Nd5 Qd7 12. Qc2 h6 13. Rfd1 Ne7 14. Nf4 N7g6 15. Nxe5 Nxe5 16. c5 d5 17. Nxd5 Bxd5 18. e4 Bxe4 19. Qxe4 Qe7 20. b4 Rfd8 21. f4 Nc6 22. Qxe7 Nxe7 23. Bf3 c6 24. b5 Rac8 25. bxc6 Nxc6 26. Rab1 Nd4 27. Bxb7 Rxc5 28. Be4 g6 29. Kf2 f5 30. Bf3 Rc2+ 31. Kg3 Rxa2 32. Rb4 Ne2+ 33. Bxe2 Ra3+ 34. Kf2 Rxd1 35. Bxd1 a5 36. Ra4 Rxa4 37. Bxa4 Kf7 38. h4 h5 39. Ke3 Ke6 40. Kd4 Kd6 41. Be8 Ke6 42. Bxg6 a4 43. Bh7 Kf6 44. Bg8 Kg7 45. Bc4 a3 46. g3 Kf6 47. Bb3 Kg7 48. Ke5 Kg6 49. Ba2 Kh7 50. Kxf5 Kg7 51. Kg5 Kh8 52. Kxh5 Kg7 53. g4 Kh8 54. g5 Kg7 55. g6 Kh8 56. Kg5 Kg7 57. h5 Kh8 58. f5 Kg7 59. f6+ Kf8 60. g7+ Ke8 61. g8Q+ Kd7 62. f7 Kd6 63. f8Q+ Kc6 64. Qf5 Kb6 65. Qge6+ Kc7 66. Qh7+ Kd8 67. Qhe7# 1-0

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1996.??.??"]
[Round "?"]
[White "Krueger, Sven"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "53"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 d6 6. Bg5 h6 7. Bh4 g5 8. Bg3 Bg4 9. h4 Rg8 10. hxg5 hxg5 11. Nd5 Nxd5 12. Bxd5 Na5 13. Rh7 Rf8 14. Qd2 c6 15. Bb3 Nxb3 16. axb3 Bxf3 17. gxf3 Qf6 18. Qe2 Qg6 19. Rh1 0-0-0 20. 0-0-0 f5 21. Rhg1 Qh6 22. Rh1 Qf6 23. Rdg1 Rf7 24. Rg2 Rg8 25. Rhg1 Qh6 26. Qd2 Rfg7 27. c3 1/2-1/2

[Event "GER-ch U13"]
[Site "Pinneberg"]
[Date "1996.??.??"]
[Round "8"]
[White "Mast, Vivien"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "169"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 c6 7. Bf4 Nbd7 8. Re1 b5 9. a3 a6 10. Bf1 Nb6 11. Qd2 Bb7 12. g3 c5 13. dxc5 Nc8 14. Rad1 Nh5 15. cxd6 Nxf4 16. dxe7 Qxe7 17. Qxf4 Re8 18. Nd5 Bxd5 19. exd5 Qd8 20. Ne5 Bxe5 21. Rxe5 Rxe5 22. Qxe5 Qd6 23. Qe8+ Kg7 24. Qc6 Rb8 25. Qxd6 Nxd6 26. b3 Rc8 27. Bd3 Kf6 28. Rd2 Rc5 29. Bf1 Ne4 30. Rd3 Rxc2 31. d6 Rc8 32. f3 Ng5 33. h4 Ne6 34. Bh3 Rd8 35. Kf2 Nc5 36. Rc3 Nb7 37. d7 Ke7 38. Rc7 Nd6 39. Rc6 a5 40. Ra6 f5 41. Rxa5 Rxd7 42. a4 bxa4 43. bxa4 Rc7 44. Bf1 Kd7 45. Rd5 Ke6 46. Ra5 Re7 47. Ra8 Kd5 48. a5 Kc6 49. a6 Kb6 50. Rd8 Nf7 51. Rd1 h6 52. Re1 Rd7 53. Re6+ Rd6 54. Re7 Nd8 55. a7 Rd2+ 56. Be2 Ra2 57. Rd7 Nb7 58. Rg7 g5 59. Rg6+ Kxa7 60. Rxh6 gxh4 61. gxh4 f4 62. Rf6 Nc5 63. Ke1 Ra1+ 64. Kd2 Ra2+ 65. Ke1 Ra1+ 66. Bd1 Ra2 67. Rf7+ Kb6 68. Be2 Ra1+ 69. Kf2 Ra2 70. h5 Nd3+ 71. Kf1 Ra1+ 72. Kg2 Ra2 73. Re7 Nc5 74. h6 Ra8 75. Kh3 Rh8 76. h7 Kc6 77. Kg4 Kd6 78. Ra7 Ke6 79. Kxf4 Kf6 80. Ke3 Kg6 81. Bd3+ Nxd3 82. Kxd3 Rxh7 83. Rxh7 Kxh7 84. Ke4 Kg6 85. Ke5 1-0

[Event "GER-chT U13"]
[Site "Verden"]
[Date "1996.??.??"]
[Round "2"]
[White "Motl, Martin"]
[Black "Retta, Thorben"]
[Result "1-0"]
[ECO "E97"]
[PlyCount "87"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d6 5. e4 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2 Ne8 10. b4 f5 11. c5 Nf6 12. Qb3 f4 13. Nc4 g5 14. Ba3 g4 15. cxd6 cxd6 16. Nxd6 h5 17. b5 Kh7 18. Nxc8 Rxc8 19. d6 Ng6 20. d7 Qxd7 21. Bxf8 Rxf8 22. Rfd1 Qe7 23. Nd5 Nxd5 24. Rxd5 f3 25. Bf1 Nf4 26. Rd2 fxg2 27. Bxg2 Nxg2 28. Kxg2 Bh6 29. Rc2 Bf4 30. a4 Qh4 31. Rh1 Bh6 32. Qg3 Qg5 33. Rc3 Qf6 34. f3 h4 35. Qf2 gxf3+ 36. Rxf3 Qg5+ 37. Kf1 Qc1+ 38. Kg2 Qg5+ 39. Kh3 Rg8 40. Rf7+ Kh8 41. Qf6+ Qxf6 42. Rxf6 Rg7 43. Rd1 Kh7 44. Rfd6 1-0

[Event "GER-chJ NRW 9596"]
[Site "Germany"]
[Date "1996.??.??"]
[Round "?"]
[White "Navel, Arne"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "22"]
[EventDate "1995.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. d3 g6 4. Nc3 Bg7 5. b3 0-0 6. Bb2 c5 7. g3 Nc6 8. Bg2 a6 9. a4 Rb8 10. 0-0 b5 11. axb5 axb5 1/2-1/2

[Event "GER-ch U13"]
[Site "Pinneberg"]
[Date "1996.??.??"]
[Round "3"]
[White "Palmer, Christian"]
[Black "Retta, Thorben"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "56"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. f3 c6 6. Bc4 b5 7. Bb3 a6 8. Qd2 0-0 9. g4 Qc7 10. Nge2 c5 11. a3 Rd8 12. h4 Nc6 13. d5 Ne5 14. Ng1 Qa5 15. Nce2 Qxd2+ 16. Bxd2 c4 17. Ba2 a5 18. Nd4 Bd7 19. Nge2 Rdb8 20. b3 cxb3 21. Bxb3 Nc4 22. Bxc4 bxc4 23. Bc3 Ra7 24. 0-0 a4 25. Rab1 Rab7 26. Rxb7 Rxb7 27. Bb4 Ne8 28. c3 Nc7 1/2-1/2

[Event "GER-chT U13"]
[Site "Verden"]
[Date "1996.??.??"]
[Round "1"]
[White "Retta, Thorben"]
[Black "Abu Aita, Mohamed"]
[Result "1/2-1/2"]
[ECO "C55"]
[PlyCount "38"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. Nc3 Bg4 5. d3 Nf6 6. Be3 Be7 7. Qd2 0-0 8. h3 Be6 9. Bb3 Bxb3 10. axb3 a5 11. 0-0 d5 12. Nxd5 Nxd5 13. exd5 Qxd5 14. d4 exd4 15. Nxd4 Nxd4 16. Qxd4 Rfd8 17. Rfd1 Qc6 18. Qc4 Qxc4 19. bxc4 a4 1/2-1/2

[Event "GER-chT U13"]
[Site "Verden"]
[Date "1996.??.??"]
[Round "3"]
[White "Retta, Thorben"]
[Black "Bardachev, Gennadij"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "50"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. Bc4 0-0 6. Qe2 Bg4 7. e5 dxe5 8. dxe5 Nfd7 9. e6 Bxe6 10. Bxe6 fxe6 11. Qxe6+ Kh8 12. Bg5 Nc6 13. 0-0 Qe8 14. Rad1 Nf6 15. Nd4 Nxd4 16. Rxd4 Rd8 17. Rxd8 Qxd8 18. Rd1 Qe8 19. Re1 Rf7 20. b3 Qf8 21. f3 Ng8 22. Nd5 Bd4+ 23. Be3 Bxe3+ 24. Rxe3 c6 25. Qe5+ Rg7 1-0

[Event "Ruhrgebiet-ch U13"]
[Site "Germany"]
[Date "1996.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Bolczek, Malte"]
[Result "1/2-1/2"]
[ECO "A58"]
[PlyCount "52"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. g3 d6 7. Bg2 g6 8. Nc3 Bg7 9. e4 0-0 10. Nge2 Nbd7 11. 0-0 Qc7 12. f4 Rfb8 13. Re1 Nb6 14. Kh1 Nc4 15. b3 Nb6 16. Qc2 Ng4 17. Kg1 Nd7 18. h3 Ngf6 19. Bb2 c4 20. bxc4 Bxc4 21. Nd4 Qb6 22. Na4 Qa7 23. Qxc4 Qxa4 24. Qxa4 Rxa4 25. Re2 Nh5 26. Nb3 Nxg3 1/2-1/2

[Event "GER-ch U13"]
[Site "Pinneberg"]
[Date "1996.??.??"]
[Round "5"]
[White "Retta, Thorben"]
[Black "Dany, Alexander"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "79"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 Bg7 4. e4 d6 5. Bc4 0-0 6. Qe2 Re8 7. e5 dxe5 8. dxe5 Nh5 9. e6 fxe6 10. Bxe6+ Bxe6 11. Qxe6+ Kh8 12. Ng5 Bxc3+ 13. bxc3 Rf8 14. Nf7+ Rxf7 15. Qxf7 Nc6 16. 0-0 Ne5 17. Qe6 Qd6 18. Qxd6 exd6 19. Rb1 b6 20. Re1 Rf8 21. Re4 Nf6 22. Re2 Nd5 23. Bd2 Nc4 24. Rbe1 Nxd2 25. Rxd2 Nxc3 26. Rd3 Nxa2 27. Rb3 a5 28. c3 b5 29. Ra3 Nxc3 30. Rxc3 c5 31. Rb3 b4 32. Ra1 c4 33. Rbb1 Ra8 34. Rxb4 axb4 35. Rxa8+ Kg7 36. Rb8 b3 37. Kf1 d5 38. Ke2 Kh6 39. Kd2 d4 40. Kc1 1-0

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1996.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Draeger, Thomas"]
[Result "1/2-1/2"]
[ECO "B23"]
[PlyCount "92"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. d3 Nc6 4. g3 e6 5. Bg2 Be7 6. Be3 Qc7 7. f4 a6 8. Nf3 Rb8 9. 0-0 b5 10. h3 Bf6 11. Rb1 a5 12. g4 Bd7 13. Qe2 b4 14. Nd1 a4 15. Qf2 Qa5 16. Nh4 Bd4 17. f5 e5 18. g5 f6 19. gxf6 Nxf6 20. Bf3 Kd8 21. Kh2 Kc7 22. Qe2 Bxe3 23. Nxe3 Nd4 24. Qd1 Nxf3+ 25. Qxf3 Rbf8 26. Qe2 Be8 27. Rfc1 Bh5 28. Qd2 Qb5 29. c3 b3 30. axb3 axb3 31. Ra1 Ra8 32. Rg1 Rxa1 33. Rxa1 Qb6 34. Ra3 Qb7 35. Qc1 Ra8 36. Rxa8 Qxa8 37. Qg1 Qf8 38. Ng4 Bxg4 39. hxg4 Qf7 40. Qa1 Qd7 41. Kg3 Qb5 42. Qa7+ Qb7 43. Qxb7+ Kxb7 44. g5 Ne8 45. Kg4 Kc6 46. Kh5 c4 1/2-1/2

[Event "GER-ch U13"]
[Site "Pinneberg"]
[Date "1996.??.??"]
[Round "9"]
[White "Retta, Thorben"]
[Black "Goetz, Katharina"]
[Result "1-0"]
[ECO "D07"]
[PlyCount "37"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Bb4 5. Nf3 Nc6 6. a3 Bxc3+ 7. bxc3 dxc4 8. e4 b5 9. a4 e5 10. axb5 Nb8 11. Nxe5 Bb7 12. f3 Qd6 13. Nxc4 Qe7 14. Be2 Qe6 15. 0-0 0-0 16. d5 Qe7 17. e5 Re8 18. Re1 Qc5+ 19. Be3 1-0

[Event "GER-chT U13"]
[Site "Verden"]
[Date "1996.??.??"]
[Round "7"]
[White "Retta, Thorben"]
[Black "Guttenthaler, Franz"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "134"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 Bg7 5. Be3 0-0 6. Qd2 Nc6 7. 0-0-0 e5 8. d5 Ne7 9. Bh6 Ne8 10. h4 f5 11. h5 f4 12. Bxg7 Kxg7 13. Be2 g5 14. Qe1 h6 15. g3 c5 16. gxf4 Rxf4 17. Nh3 Bxh3 18. Rxh3 Nc7 19. Qg3 Qd7 20. Rh2 b5 21. Bf1 a5 22. Bh3 Qe8 23. Ne2 Rf6 24. Rf1 Kh7 25. Qg1 b4 26. Ng3 c4 27. Bf5+ Nxf5 28. Nxf5 Nxd5 29. Nxh6 Kxh6 30. exd5 Qb5 31. Rg2 Rg8 32. Qe3 Qxd5 33. Rg3 c3 34. bxc3 Qxa2 35. Rfg1 Qa1+ 36. Kd2 Qxc3+ 37. Qxc3 bxc3+ 38. Kxc3 Kxh5 39. Rh1+ Kg6 40. Rgh3 Kf7 41. Kd3 Ke6 42. Ra1 Rgf8 43. Ke3 Ra8 44. Rh7 a4 45. Ra3 Rg6 46. Rh3 g4 47. Rg3 Kf5 48. Kf2 Rc8 49. fxg4+ Rxg4 50. Rxg4 Kxg4 51. Rxa4+ Kf5 52. Ra2 d5 53. Ke3 Rc4 54. Ra5 d4+ 55. Kd3 Rc3+ 56. Kd2 Ke4 57. Ra8 Rg3 58. Rh8 Rg2+ 59. Kd1 Kf3 60. Rh3+ Rg3 61. Rh1 Kf2 62. Kd2 e4 63. Re1 e3+ 64. Kd1 Rg1 65. Rxg1 Kxg1 66. Ke2 Kg2 67. c4 dxc3 1/2-1/2

[Event "GER-chJ NRW 9596"]
[Site "Germany"]
[Date "1996.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Holtmannspoetter, Stefan"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "78"]
[EventDate "1995.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 h6 6. Be3 Bxe3 7. fxe3 d6 8. 0-0 0-0 9. Qe1 Bd7 10. Nh4 Kh7 11. Nf5 g6 12. Ng3 Be6 13. Bb3 Kg7 14. Nd5 Bxd5 15. Bxd5 a5 16. Qe2 Nxd5 17. exd5 Ne7 18. e4 Qd7 19. Rf3 f5 20. exf5 Nxf5 21. Nxf5+ Rxf5 22. Rxf5 gxf5 23. Rf1 Kg6 24. Qf2 f4 25. g3 Qg4 26. Kh1 Rf8 27. Qf3 Qxf3+ 28. Rxf3 Kg5 29. Kg2 Ra8 30. gxf4+ exf4 31. c4 Re8 32. Kf2 h5 33. b3 h4 34. h3 Kf5 35. a3 Re7 36. Kf1 Re3 37. Kf2 Re7 38. Kg2 Rg7+ 39. Kf1 c6 1/2-1/2

[Event "NRW-ch U13"]
[Site "Hiddenhausen"]
[Date "1996.??.??"]
[Round "?"]
[White "Retta, Thorben"]
[Black "Huennekes, Sebastian"]
[Result "1-0"]
[ECO "D60"]
[PlyCount "57"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 0-0 6. e3 c6 7. Bd3 Nbd7 8. 0-0 h6 9. Bh4 Nb6 10. cxd5 exd5 11. h3 Be6 12. Ne5 Rc8 13. Na4 Nxa4 14. Qxa4 a6 15. Rfc1 Qd6 16. Rc2 Nd7 17. Bxe7 Qxe7 18. Nxd7 Bxd7 19. Qb3 Rb8 20. Rac1 Rfc8 21. Qb6 Qd6 22. b4 Rc7 23. Bxa6 bxa6 24. Qxb8+ Bc8 25. Qb6 Bb7 26. Qc5 Qd7 27. Qa5 Kf8 28. Rc5 Ke7 29. Rxd5 1-0

