[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Frenzel, Lothar"]
[Black "Sieber, Heinz"]
[Result "1/2-1/2"]
[ECO "A51"]
[PlyCount "73"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. Nf3 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 f5 7. exf6 Nxf6 8. e3 d6 9. Be2 Nc6 10. 0-0 Be6 11. b3 0-0 12. Nd4 Nxd4 13. exd4 d5 14. Rc1 c6 15. Nf3 dxc4 16. Bxc4 Bxc4 17. bxc4 Qd6 18. Qb3 Qc7 19. Ne5 c5 20. Nf3 Ng4 21. g3 cxd4 22. Nxd4 Rae8 23. c5+ Qf7 24. Nb5 Qxb3 25. axb3 Rf3 26. Nd6 Re7 27. b4 a6 28. Rce1 Rd7 29. Re4 Nf6 30. Rd4 h6 31. Kg2 Rc3 32. Ra1 Ne8 33. Rad1 Nxd6 34. Rxd6 Rf7 35. Rd7 Rcf3 36. R1d2 Rxf2+ 37. Rxf2 1/2-1/2

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Hartmann"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C41"]
[PlyCount "35"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2004"]
[Source "ChessBase"]
[SourceDate "2003.04.28"]
[SourceVersion "3"]
[SourceVersionDate "2003.04.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 f5 4. d4 fxe4 5. Nxe5 d5 6. Qh5+ g6 7. Nxg6 hxg6 8. Qxh8 Ne7 9. Bb3 Nbc6 10. Bh6 Kf7 11. Qh7+ Ke8 12. Bxf8 Kxf8 13. Nc3 Bf5 14. g4 Bxg4 15. Nxe4 Ng8 16. Qxg6 Qd7 17. Rg1 Be6 18. Nc5 1-0

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Rost, Hans Ruediger"]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "A45"]
[PlyCount "38"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. g4 Nxg4 3. e4 Nf6 4. e5 Nd5 5. Bg2 e6 6. c4 Nb6 7. Qe2 d6 8. Nf3 Nc6 9. 0-0 dxe5 10. dxe5 Nd4 11. Nxd4 Qxd4 12. Bg5 Nd7 13. Rd1 Qc5 14. Nc3 Be7 15. Qd2 Bxg5 16. Qxg5 0-0 17. Re1 f6 18. Qg4 Nxe5 19. Rad1 Nxg4 0-1

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Schneider, W."]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "A80"]
[PlyCount "68"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 f5 2. h3 Nf6 3. g4 fxg4 4. hxg4 d6 5. Nf3 Bxg4 6. Ng5 Qd7 7. Qd3 Nc6 8. Bh3 Bxh3 9. Rxh3 g6 10. Nxh7 Rxh7 11. Rxh7 Nxh7 12. Qxg6+ Kd8 13. Qxh7 Nxd4 14. f3 Qf5 15. Qxf5 Nxf5 16. c3 Bg7 17. e4 Nh4 18. Ke2 Kd7 19. Bg5 Rh8 20. Bxh4 Rxh4 21. Nd2 Rh2+ 22. Kd3 Bh6 23. Rd1 e5 24. b4 Rf2 25. Kc2 Bxd2 26. Rxd2 Rxf3 27. Rd3 Rf2+ 28. Rd2 Rxd2+ 29. Kxd2 Ke6 30. c4 c6 31. a4 d5 32. exd5+ cxd5 33. c5 d4 34. b5 Kd5 0-1

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Frenzel, Lothar"]
[Result "0-1"]
[ECO "A10"]
[PlyCount "60"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. c4 b5 2. cxb5 Bb7 3. d4 e6 4. Nc3 Bb4 5. a3 Ba5 6. b4 Bb6 7. Bb2 d6 8. e3 Nf6 9. Nf3 0-0 10. Be2 Nbd7 11. a4 c5 12. bxc6 Bxc6 13. a5 Bc7 14. 0-0 a6 15. Bd3 e5 16. dxe5 Nxe5 17. Nd4 Nxd3 18. Qxd3 Bb7 19. Rfd1 Re8 20. f3 Qe7 21. e4 d5 22. Nf5 Qe5 23. exd5 Qxh2+ 24. Kf2 g6 25. Rh1 Qf4 26. Nh6+ Kf8 27. Ne2 Rxe2+ 28. Qxe2 Re8 29. Qd3 Nxd5 30. Qd4 Qg3+ 0-1

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Knorr, Bernd"]
[Result "1-0"]
[ECO "A51"]
[PlyCount "67"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 Qh4 5. g3 Qh5 6. Nf3 Nc6 7. Qd5 Nc5 8. Nbd2 Ne6 9. Bg2 Bc5 10. Nb3 Be7 11. e3 0-0 12. 0-0 Rb8 13. Nbd4 h6 14. Ne2 Qf5 15. b4 a6 16. Ned4 Qh5 17. Bb2 Re8 18. Rad1 Qg6 19. Ne2 Qc2 20. Rd2 Qf5 21. Rfd1 a5 22. b5 Na7 23. Nf4 c6 24. bxc6 Nxc6 25. Qb5 Nc7 26. Qb3 Ne6 27. Nd4 Ncxd4 28. Bxd4 Nxd4 29. exd4 Bg5 30. Bh3 Qe4 31. Re2 Qc6 32. Bg2 Qa6 33. Nd5 Re6 34. f4 1-0

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Rost, Hans Ruediger"]
[Result "0-1"]
[ECO "A80"]
[PlyCount "82"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 f5 2. Qd3 e6 3. g4 fxg4 4. h3 gxh3 5. Nxh3 Be7 6. Nf4 Nf6 7. Ng6 Rg8 8. e4 d6 9. e5 hxg6 10. Qxg6+ Kd7 11. exf6 gxf6 12. Qh7 c6 13. Nc3 Kc7 14. Bf4 e5 15. dxe5 fxe5 16. Bc4 Rg4 17. Bxe5 dxe5 18. Rd1 Nd7 19. Ne4 Qf8 20. Be6 Rxe4+ 21. Qxe4 Nc5 22. Qxe5+ Bd6 23. Rh7+ Bd7 24. Rxd7+ Nxd7 25. Qf5 Qxf5 26. Bxf5 Rg8 27. Kf1 Rg5 28. Bh3 Nc5 29. a3 Na4 30. b4 c5 31. bxc5 Rxc5 32. Rd2 Rc3 33. Be6 Rxa3 34. c4 Nc5 35. Bd5 Bf4 36. Re2 Kd6 37. Rb2 b6 38. Re2 b5 39. Rb2 Nb3 40. Bg8 bxc4 41. Kg2 c3 0-1

[Event "corr"]
[Site "corr"]
[Date "1989.??.??"]
[Round "?"]
[White "Wolff, Patrick G"]
[Black "Sieber, Heinz"]
[Result "1/2-1/2"]
[ECO "A51"]
[PlyCount "85"]
[EventDate "1989.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 d6 5. Qd5 Nc5 6. Nd2 Be6 7. Qd4 Nc6 8. Qe3 dxe5 9. b4 Nd4 10. Ra2 Nd7 11. Ngf3 Nf5 12. Qd3 Bd6 13. e4 Ne7 14. Ng5 Ng6 15. Nxe6 fxe6 16. g3 Nf6 17. Bh3 Nf8 18. Nf3 Bxb4+ 19. Ke2 Qxd3+ 20. Kxd3 Rd8+ 21. Kc2 Bc5 22. Be3 Bd4 23. Bxd4 exd4 24. Kd3 c5 25. Ne5 N6d7 26. Nxd7 Rxd7 27. f4 Re7 28. Rb1 Ng6 29. Rb5 b6 30. e5 h5 31. Bg2 h4 32. Be4 Kf7 33. Bxg6+ Kxg6 34. g4 Rf8 35. Ke4 Ref7 36. Rf2 d3 37. Rb3 Rd8 38. Rxd3 Rxd3 39. Kxd3 Rd7+ 40. Kc3 Rd4 41. h3 Re4 42. Kd3 Rd4+ 43. Kc3 1/2-1/2

[Event "corr"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Simchen, Lothar"]
[Result "0-1"]
[ECO "D00"]
[PlyCount "82"]
[EventDate "1988.03.06"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Qxf3 Nc6 6. Bb5 Bd7 7. Nge2 a6 8. Bc4 b5 9. Bb3 Na5 10. 0-0 Nxb3 11. axb3 c6 12. Ne4 g6 13. Nxf6+ exf6 14. Ng3 Bg7 15. Re1+ Kf8 16. Bf4 f5 17. c3 Qb6 18. Bd6+ Kg8 19. Re7 Be6 20. Bc5 Qd8 21. Qxc6 Bd5 22. Qc7 Qxc7 23. Rxc7 Bxb3 24. Ba7 h5 25. Rxa6 Kh7 26. Rb6 Bc4 27. d5 h4 28. Rbb7 hxg3 29. Rxf7 gxh2+ 30. Kh1 Rhg8 31. Bd4 Bxd5 32. Rxg7+ Rxg7 33. Rxg7+ Kh6 34. Rd7 Bc4 35. Be3+ g5 36. Rd2 f4 37. Bc5 g4 38. Kxh2 g3+ 39. Kh1 Ra1+ 40. Bg1 Kg5 41. Rd4 Ra6 0-1

[Event "corr"]
[Site "corr"]
[Date "1988.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Vormann, Dirk"]
[Result "1/2-1/2"]
[ECO "D00"]
[PlyCount "54"]
[EventDate "1988.03.06"]
[EventType "match (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 Bg4 6. Bc4 e6 7. 0-0 Be7 8. Ne2 0-0 9. c3 c5 10. Be3 Qb6 11. Qc2 Bf5 12. Bd3 Bg6 13. Bxg6 hxg6 14. Kh1 Nc6 15. dxc5 Bxc5 16. Bxc5 Qxc5 17. Ned4 Nxd4 18. Nxd4 Rad8 19. Qb3 e5 20. Qb5 Qc7 21. Nb3 Rd5 22. Qe2 Rfd8 23. Rad1 Rxd1 24. Rxd1 Rxd1+ 25. Qxd1 Qd7 26. Qe2 Qf5 27. Qe1 b6 1/2-1/2

[Event "corr"]
[Site "corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Knorr, Bernd"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "A02"]
[PlyCount "37"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 Nf6 5. d4 Bg4 6. Qd3 Nc6 7. e4 Bxf3 8. gxf3 Nxd4 9. Nc3 Nh5 10. Qxd4 Bg3+ 11. hxg3 Qxd4 12. Rxh5 0-0-0 13. Bf4 Qb4 14. Rb5 Qd4 15. Nd5 Rd7 16. Be3 Qa4 17. Rc5 h5 18. c3 b6 19. Bb5 1-0

[Event "DDR corr"]
[Site "DDR"]
[Date "1987.??.??"]
[Round "?"]
[White "Marquardt, Rainer"]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "B38"]
[PlyCount "66"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. c4 g6 6. Nc3 Bg7 7. Be3 Nf6 8. Be2 0-0 9. 0-0 Nxd4 10. Bxd4 b6 11. f3 Bb7 12. Qd2 e6 13. Be3 d5 14. Bh6 Bxh6 15. Qxh6 dxe4 16. Qe3 exf3 17. Bxf3 Bxf3 18. Qxf3 Nh5 19. Kh1 Qd2 20. Rf2 Qd4 21. b3 f5 22. Rd1 Qg7 23. Rfd2 Nf6 24. Qc6 Rae8 25. Ne2 Ne4 26. Rd7 Qb2 27. Re1 Nf2+ 28. Kg1 Ng4 29. Rxa7 Qe5 30. Qc7 Qe3+ 31. Kh1 Nf2+ 32. Kg1 Nh3+ 33. Kh1 Qg1+ 0-1

[Event "corr"]
[Site "corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Schneider, W."]
[Result "0-1"]
[ECO "A45"]
[PlyCount "59"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. g4 Nxg4 3. e4 Nf6 4. e5 Nd5 5. Bg2 e6 6. Nf3 d6 7. c4 Nb6 8. Qe2 Nc6 9. 0-0 Be7 10. Nc3 0-0 11. Bf4 dxe5 12. dxe5 Bc5 13. Rad1 Nd7 14. Ne4 Qe7 15. a3 a5 16. Rd2 h6 17. Rfd1 Bb6 18. Kh1 f6 19. exf6 Nxf6 20. Nxf6+ Qxf6 21. Bg3 a4 22. Nh4 Nd8 23. Qh5 Ra5 24. Qg6 c6 25. Qxf6 gxf6 26. Bd6 Re8 27. c5 Bxc5 28. Bxc5 Rxc5 29. Rxd8 Kf7 30. Be4 0-1

[Event "corr"]
[Site "corr"]
[Date "1987.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Wolff, Gerhard"]
[Result "1-0"]
[ECO "C40"]
[PlyCount "13"]
[EventDate "1987.??.??"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d5 3. Nxe5 Bd6 4. d4 dxe4 5. Qe2 Bxe5 6. dxe5 Qd1+ 7. Qxd1 1-0

[Event "ICCF-Cup6/7 corr"]
[Site "ICCF corr"]
[Date "1986.??.??"]
[Round "?"]
[White "Green, Wesley C"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "B25"]
[PlyCount "59"]
[EventDate "1986.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. 0-0 0-0 9. Be3 Nd4 10. Rb1 Rb8 11. Ne2 Nxe2+ 12. Qxe2 b6 13. c3 Ba6 14. g4 Qd7 15. h4 f5 16. gxf5 exf5 17. Bh3 Qb5 18. c4 Qc6 19. Ng5 b5 20. b3 Bh6 21. Bg2 Bb7 22. Rf2 Qb6 23. e5 d5 24. b4 Bxg5 25. Bxc5 Qc7 26. hxg5 Rbd8 27. cxb5 d4 28. Bxb7 Qxb7 29. a4 Rfe8 30. Qa2+ 1-0

[Event "corr"]
[Site "corr"]
[Date "1986.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Sandklef, Ake"]
[Result "0-1"]
[ECO "C27"]
[PlyCount "54"]
[EventDate "1986.??.??"]
[EventType "team (corr)"]
[EventRounds "12"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Nc6 6. Nb5 g6 7. Qf3 f5 8. Qd5 Qe7 9. Nxc7+ Kd8 10. Nxa8 b6 11. d3 Nd4 12. h4 f4 13. Nxb6 axb6 14. Qa8 Kc7 15. c3 Bb7 16. Qa4 Bxg2 17. Rh2 Nf3+ 18. Nxf3 Bxf3 19. Bd1 Bb7 20. f3 Nf5 21. h5 Qg5 22. Qc4+ Bc5 23. Rh1 Qg3+ 24. Kd2 Qf2+ 25. Be2 Bxf3 26. Re1 Ne3 27. Qf7 Ng2 0-1

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1986.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Schlott, Werner"]
[Result "0-1"]
[ECO "E88"]
[PlyCount "54"]
[EventDate "1986.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 c6 8. Bd3 cxd5 9. cxd5 Ne8 10. Qd2 f5 11. exf5 gxf5 12. 0-0-0 a6 13. h4 h5 14. Nh3 Qc7 15. Kb1 Nd7 16. Ng5 Nc5 17. Bc2 b5 18. a3 Rb8 19. Qe2 b4 20. axb4 Rxb4 21. Bxc5 Qxc5 22. Na2 Rb6 23. Rd2 Qa3 24. Bd1 e4 25. fxe4 fxe4 26. Ne6 Bxe6 27. dxe6 e3 0-1

[Event "DDR-ch MG01 corr"]
[Site "DDR"]
[Date "1986.??.??"]
[Round "?"]
[White "Walther, Joachim"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "E35"]
[PlyCount "91"]
[EventDate "1986.03.13"]
[EventType "tourn (corr)"]
[EventRounds "12"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Nf3 c5 7. Bg5 h6 8. Bxf6 Qxf6 9. a3 Ba5 10. b4 cxb4 11. Qa4+ Nc6 12. Nxd5 Qd6 13. axb4 Bxb4+ 14. Nxb4 Qxb4+ 15. Qxb4 Nxb4 16. Kd2 Bf5 17. Ra5 Be6 18. Rb5 a5 19. Rxb7 0-0 20. e3 Rfc8 21. Bd3 Nxd3 22. Kxd3 a4 23. Ra1 Bc4+ 24. Kd2 Bb3 25. Ne1 Rd8 26. Rb4 Rac8 27. f3 Rc6 28. Rc1 Rdc8 29. Rxc6 Rxc6 30. Rb8+ Kh7 31. Rb5 Ra6 32. e4 f6 33. d5 Ra7 34. Nc2 Rc7 35. Nd4 Bc4 36. Ra5 Kg8 37. Rxa4 Bf1 38. Ne6 Rb7 39. Ra8+ Kh7 40. h4 Bxg2 41. h5 g6 42. hxg6+ Kxg6 43. Rg8+ Kh7 44. Rxg2 Rb2+ 45. Ke3 Rxg2 46. d6 1-0

[Event "EU-ch GT232 corr"]
[Site "ICCF corr"]
[Date "1985.??.??"]
[Round "?"]
[White "Gnirk, Hajo"]
[Black "Sieber, Heinz"]
[Result "1/2-1/2"]
[ECO "A07"]
[PlyCount "116"]
[EventDate "1985.??.??"]
[EventType "swiss (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. Ngf3 Bg7 5. g3 dxe4 6. dxe4 Nf6 7. Bg2 Na6 8. 0-0 0-0 9. c3 Nc5 10. Qc2 Bg4 11. h3 Bxf3 12. Bxf3 Qd7 13. Bg2 Rfd8 14. Re1 Nd3 15. Re2 Bh6 16. Nb3 Nxc1 17. Nxc1 Qd1+ 18. Kh2 Rd7 19. Nb3 Qxc2 20. Rxc2 Rad8 21. Re1 Rd1 22. Rxd1 Rxd1 23. f4 g5 24. fxg5 Bxg5 25. Re2 e5 26. Bf3 Rd6 27. Kg2 Nd7 28. Na5 b5 29. c4 Nc5 30. cxb5 cxb5 31. b4 Ne6 32. Rc2 a6 33. Bg4 Rd4 34. Bxe6 fxe6 35. Rc6 Rxb4 36. Rxe6 Rxe4 37. Rxa6 Re2+ 38. Kf3 Rxa2 39. Ke4 Bd2 40. Ra8+ Kg7 41. Ra7+ Kg6 42. Nc6 Rxa7 43. Nxa7 b4 44. Nc6 Bc3 45. Ne7+ Kf6 46. Nd5+ Ke6 47. g4 Bd2 48. Nb6 Bc1 49. Na4 Kf6 50. Nc5 Bf4 51. h4 h6 52. Kd5 Kg6 53. Kc4 Bg3 54. Kxb4 Bxh4 55. Ne4 Bg5 56. Kc5 Bf4 57. Kd6 Kf7 58. Kd7 Kg6 1/2-1/2

[Event "DDR-ch M773 corr"]
[Site "DDR"]
[Date "1985.??.??"]
[Round "?"]
[White "Heller, G."]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "54"]
[EventDate "1985.01.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 d6 6. 0-0 Nf6 7. f5 Na5 8. Qe2 Nxc4 9. Qxc4 a6 10. a4 Bd7 11. Ng5 0-0 12. fxg6 hxg6 13. e5 dxe5 14. d3 Bf5 15. Be3 Ng4 16. Bxc5 Rc8 17. Qb4 Rxc5 18. Qxc5 e4 19. Nd5 e6 20. dxe4 exd5 21. exf5 Qxg5 22. Rf3 d4 23. h3 Ne3 24. Rf2 Qg3 25. Rc1 Be5 26. Re2 Bf4 27. fxg6 fxg6 0-1

[Event "DDR-ch M773 corr"]
[Site "DDR"]
[Date "1985.??.??"]
[Round "?"]
[White "Mueller, Peter"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C15"]
[PlyCount "61"]
[EventDate "1985.01.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 dxe4 6. Qg4 Nf6 7. Qxg7 Rg8 8. Qh6 Rg6 9. Qe3 Nc6 10. Bb2 Ne7 11. 0-0-0 b5 12. f3 Ned5 13. Qe1 e3 14. g4 Rb8 15. Bd3 Rg8 16. Ne2 h5 17. gxh5 Nxh5 18. Rg1 Rh8 19. h4 c6 20. Rg5 a5 21. Qg1 Nhf6 22. Qg3 Qb6 23. Qd6 b4 24. axb4 axb4 25. c4 Nc3 26. Rdg1 Na4 27. Ng3 Rf8 28. Ne4 Nd7 29. Rg8 f5 30. Rxf8+ Nxf8 31. Rg8 1-0

[Event "DDR-ch M773 corr"]
[Site "DDR"]
[Date "1985.??.??"]
[Round "?"]
[White "Raessler, Arndt"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C16"]
[PlyCount "63"]
[EventDate "1985.01.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. a3 Bxc3+ 6. bxc3 b6 7. a4 Ba6 8. Bxa6 Nxa6 9. Qd3 Nb8 10. f4 Ne7 11. Ne2 c5 12. 0-0 cxd4 13. cxd4 0-0 14. Rf3 f5 15. Rh3 g6 16. Kf2 Rf7 17. Bd2 Nbc6 18. Qb5 Qc7 19. Rb1 Rb8 20. Ra3 Kg7 21. Qd3 Qd8 22. Ng1 Ng8 23. Nf3 h6 24. Rab3 Rc8 25. h4 Rfc7 26. Kg3 Qe8 27. Rb5 Nd8 28. a5 bxa5 29. Bxa5 Rxc2 30. Bxd8 Qxd8 31. Rb7+ R8c7 32. Qxc2 1-0

[Event "DDR-ch M773 corr"]
[Site "DDR"]
[Date "1985.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Braune, Herbert"]
[Result "0-1"]
[ECO "B90"]
[PlyCount "54"]
[EventDate "1985.01.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 Nc6 7. a3 e5 8. Nxc6 bxc6 9. 0-0 Be7 10. Qe1 0-0 11. Be3 Be6 12. Bd3 d5 13. exd5 cxd5 14. Bg5 e4 15. Be2 Qc7 16. Rd1 Rfd8 17. Qd2 Qc6 18. f3 Rac8 19. Be3 d4 20. Bxd4 Rxd4 21. Qc1 Rxd1 22. Rxd1 exf3 23. Bxf3 Qb6+ 24. Kh1 Bxa3 25. Na4 Qb5 26. Qf4 Be7 27. Re1 Rc4 0-1

[Event "DDR-ch M773 corr"]
[Site "DDR"]
[Date "1985.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Glasewald, Stefan"]
[Result "1-0"]
[ECO "A51"]
[PlyCount "73"]
[EventDate "1985.01.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ne4 4. a3 d6 5. Nf3 Nc6 6. Qc2 Bf5 7. Nbd2 Nxd2 8. Qxd2 dxe5 9. e3 Qf6 10. Qc3 Be7 11. Be2 0-0 12. 0-0 Rfd8 13. Rd1 Rxd1+ 14. Bxd1 Rd8 15. Bc2 Bxc2 16. Qxc2 Qg6 17. e4 Nd4 18. Nxd4 exd4 19. Qd3 c5 20. Bd2 h6 21. f4 Qc6 22. Rf1 a6 23. e5 b5 24. Rc1 Rb8 25. b4 bxc4 26. Rxc4 Qa4 27. Be1 cxb4 28. axb4 Qa1 29. Kf2 Rd8 30. Bd2 Bh4+ 31. g3 Be7 32. Rc7 Re8 33. e6 Qh1 34. exf7+ Kxf7 35. Qf5+ Kg8 36. Qh5 Kf8 37. f5 1-0

[Event "EU-ch GT232 corr"]
[Site "ICCF corr"]
[Date "1985.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Haglund, Kjell"]
[Result "0-1"]
[ECO "C18"]
[PlyCount "54"]
[EventDate "1985.??.??"]
[EventType "swiss (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Qc7 8. Bd3 cxd4 9. Ne2 dxc3 10. Qxg7 Rg8 11. Qxh7 Nbc6 12. f4 Bd7 13. Be3 0-0-0 14. Qh3 d4 15. Bf2 Nd5 16. 0-0 f6 17. exf6 Nxf6 18. Qf3 e5 19. Bg3 e4 20. Bxe4 Bg4 21. Qd3 Nxe4 22. Qxe4 Rde8 23. Qd5 Bxe2 24. Rfe1 Qd7 25. Qb3 Na5 26. Qb4 Qb5 27. Rab1 Qxb4 0-1

[Event "EU-ch GT232 corr"]
[Site "ICCF corr"]
[Date "1985.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Kazoks, Aivars E"]
[Result "0-1"]
[ECO "D44"]
[PlyCount "50"]
[EventDate "1985.??.??"]
[EventType "swiss (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nc3 Nf6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. Nxg5 hxg5 10. Bxg5 Nbd7 11. Qf3 Bb7 12. exf6 Qa5 13. Bd2 Bh6 14. 0-0-0 Bxd2+ 15. Rxd2 Nb6 16. Ne4 0-0-0 17. Qa3 Qxa3 18. bxa3 Rh6 19. f3 Nd5 20. a4 Nxf6 21. Nxf6 Rxf6 22. axb5 cxb5 23. a4 c3 24. Rd1 b4 25. Kc2 Rf4 0-1

[Event "DDR-ch M773 corr"]
[Site "DDR"]
[Date "1985.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Winter, Carsten"]
[Result "1/2-1/2"]
[ECO "C09"]
[PlyCount "58"]
[EventDate "1985.01.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. 0-0 cxd4 8. Nb3 Nge7 9. Nbxd4 0-0 10. c3 Bg4 11. Qc2 Qc7 12. h3 Nxd4 13. Nxd4 Bd7 14. Bd3 Ng6 15. Be3 a6 16. Rad1 Kh8 17. Nf5 Nf4 18. Bxf4 Bxf4 19. Rfe1 Rfe8 20. Bf1 Rad8 21. Rxe8+ Bxe8 22. Qd3 Bb5 23. Qd4 Bh2+ 24. Kh1 Be5 25. Qb4 Bxf1 26. Rxf1 Qc4 27. Qxc4 dxc4 28. Ne3 b5 29. Rd1 Rxd1+ 1/2-1/2

[Event "DDR-ch M768 corr"]
[Site "DDR"]
[Date "1984.10.15"]
[Round "?"]
[White "Poenisch, Egmont"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "B77"]
[WhiteElo "2085"]
[BlackElo "1965"]
[PlyCount "33"]
[EventDate "1984.10.15"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. Bc4 Nxd4 10. Bxd4 a6 11. Bb3 b5 12. 0-0-0 Bb7 13. h4 Rc8 14. h5 d5 15. hxg6 hxg6 16. g4 dxe4 17. Qh2 1-0

[Event "DDR-ch M768 corr"]
[Site "DDR"]
[Date "1984.10.15"]
[Round "?"]
[White "Schuetz, Helmut"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2080"]
[BlackElo "1965"]
[PlyCount "65"]
[EventDate "1984.10.15"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[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. a3 d6 9. c3 Bg4 10. d3 Na5 11. Bc2 c5 12. Nbd2 Qc7 13. Nf1 c4 14. h3 cxd3 15. Qxd3 Be6 16. N3d2 Rfc8 17. Ne3 g6 18. b4 Nc6 19. Bb2 Nh5 20. Nf5 Bf8 21. Rad1 d5 22. g4 dxe4 23. Qxe4 Nf4 24. Qe3 f6 25. Ne4 gxf5 26. Nxf6+ Kh8 27. gxf5 Qg7+ 28. Ng4 Bc4 29. f6 Qg5 30. Rd7 Rd8 31. Rxh7+ Kg8 32. Qe4 Bd5 33. Qxd5+ 1-0

[Event "DDR-ch M768 corr"]
[Site "DDR"]
[Date "1984.10.15"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Grigutsch, Klaus Dieter"]
[Result "1-0"]
[ECO "A97"]
[WhiteElo "1965"]
[BlackElo "2020"]
[PlyCount "71"]
[EventDate "1984.10.15"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 Be7 5. Nf3 0-0 6. 0-0 d6 7. Nc3 Qe8 8. Ng5 h6 9. Nf3 Qh5 10. Nd2 Nc6 11. d5 Ng4 12. h3 Nge5 13. Nf3 Nxf3+ 14. exf3 Ne5 15. Qe2 c6 16. g4 Qh4 17. dxe6 f4 18. c5 Bxe6 19. Re1 Rad8 20. b3 Bd5 21. Bb2 Bf7 22. Rad1 Ng6 23. cxd6 Bxd6 24. Ne4 Bc7 25. Qc2 Rfe8 26. Bf1 Rxd1 27. Rxd1 Rd8 28. Rxd8+ Qxd8 29. Be2 Be5 30. Bxe5 Nxe5 31. Qc5 Qb8 32. Qe7 Ng6 33. Qd7 Ne5 34. Qf5 Ng6 35. Bc4 Qc7 36. Qxg6 1-0

[Event "DDR-ch M768 corr"]
[Site "DDR"]
[Date "1984.10.15"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Leisebein, Peter"]
[Result "0-1"]
[ECO "C63"]
[WhiteElo "1965"]
[BlackElo "2185"]
[PlyCount "48"]
[EventDate "1984.10.15"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 Nd4 5. exf5 Nxb5 6. Nxb5 d6 7. d3 Bxf5 8. Qe2 Qd7 9. a4 Nf6 10. 0-0 Be7 11. Nh4 Bg4 12. f3 Bh5 13. Qf2 0-0 14. Qg3 c6 15. Nc3 d5 16. Kh1 Bd6 17. Qf2 h6 18. g3 g5 19. Ng2 e4 20. dxe4 dxe4 21. f4 Bf3 22. Kg1 Qh3 23. g4 Bc5 24. Ne3 gxf4 0-1

[Event "DDR-ch M768 corr"]
[Site "DDR"]
[Date "1984.10.15"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Nitsche, Werner"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1965"]
[BlackElo "2080"]
[PlyCount "50"]
[EventDate "1984.10.15"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2008"]
[Source "ChessBase"]
[SourceDate "2008.06.24"]
[SourceVersion "1"]
[SourceVersionDate "2008.06.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 Nc6 8. Qd2 0-0 9. 0-0-0 Nxd4 10. Bxd4 Qa5 11. Kb1 e5 12. Be3 Be6 13. h4 Nxe4 14. Qd3 Nxc3+ 15. Qxc3 Qxa2+ 16. Kc1 d5 17. Qa3 Qxa3 18. bxa3 d4 19. Bd2 f5 20. h5 Rfc8 21. hxg6 hxg6 22. Bg5 e4 23. Kb1 Rc6 24. f3 d3 25. Bxd3 exd3 0-1

[Event "DDR-ch M768 corr"]
[Site "DDR"]
[Date "1984.10.15"]
[Round "?"]
[White "Wesely, Heinz"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C16"]
[BlackElo "1965"]
[PlyCount "55"]
[EventDate "1984.10.15"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 b6 7. Qg4 Ng6 8. h4 h5 9. Qg3 Ba6 10. Bxa6 Nxa6 11. Ne2 Qd7 12. Bg5 c5 13. 0-0 Rc8 14. f4 cxd4 15. f5 exf5 16. Nxd4 Nc5 17. Nxf5 0-0 18. Qf3 Ne4 19. Qxh5 Rxc3 20. Rae1 Re8 21. Bf6 Ng3 22. Qg4 Nxf5 23. e6 Rxe6 24. Bxc3 Rc6 25. Qxf5 Qxf5 26. Rxf5 Rxc3 27. Re8+ Nf8 28. Rxd5 1-0

[Event "EU-ch M corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Butze, Roland"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "B77"]
[PlyCount "69"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 a6 9. Bc4 0-0 10. Bb3 Bd7 11. h4 Nh5 12. g4 Nxd4 13. Bxd4 Bxd4 14. Qxd4 Ng7 15. h5 Ne6 16. Qe3 Qc7 17. Qh6 g5 18. Bxe6 Bxe6 19. Qxg5+ Kh8 20. 0-0-0 Rac8 21. Rd2 Rg8 22. Qe3 f6 23. Nd5 Bxd5 24. exd5 Rg5 25. c3 b5 26. Kb1 Re5 27. Qd4 Qc4 28. Rhd1 Kg7 29. f4 Re4 30. Qa7 Qa4 31. Qd7 Qc4 32. Rd4 Rxd4 33. Qxe7+ Kg8 34. Qe6+ Kg7 35. h6+ 1-0

[Event "EU-ch GT230 corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Gerasimov, Dimitar"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "B76"]
[PlyCount "71"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. 0-0-0 d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Nxd5 cxd5 13. Qxd5 Qc7 14. Qxa8 Bf5 15. Qxf8+ Kxf8 16. Rd2 e5 17. Bb5 e4 18. fxe4 Be6 19. c4 Bf6 20. Bh6+ Ke7 21. Be3 Kf8 22. Rf1 Bg7 23. Rc2 Qe5 24. Re1 a5 25. Bb6 a4 26. a3 Qxh2 27. Bxa4 Qe5 28. Bb5 Bf5 29. Bc7 Qxc7 30. exf5 Qf4+ 31. Kb1 Qxf5 32. c5 Bd4 33. c6 Bxb2 34. a4 Bc3 35. Rd1 Qe4 36. c7 1-0

[Event "EU-ch GT230 corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Kuebler, Alfred"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "A40"]
[PlyCount "87"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 e6 2. f3 d5 3. c3 c5 4. Bf4 Nc6 5. e3 Nf6 6. g4 h6 7. Qc2 cxd4 8. exd4 Bd6 9. Bxd6 Qxd6 10. Na3 a6 11. 0-0-0 b5 12. Nb1 Bb7 13. Ne2 Rc8 14. b3 b4 15. Kb2 bxc3+ 16. Nexc3 Qf4 17. Qd3 Nb4 18. Qe2 0-0 19. h4 a5 20. a3 Nc6 21. Qd3 Nd7 22. Ne2 Qb8 23. f4 Qa7 24. Ng3 a4 25. g5 axb3 26. Rh2 Nb4 27. Qxb3 Nc6 28. Qd3 Na5 29. gxh6 Rb8 30. Ka1 Nc4 31. hxg7 Rfc8 32. Nh5 Ba6 33. Qg3 Na5 34. Bxa6 Nb3+ 35. Qxb3 Rxb3 36. Bxc8 Rxb1+ 37. Kxb1 Qb8+ 38. Rb2 Qxc8 39. Rc1 Qa6 40. Rc3 e5 41. Rbc2 Nb6 42. Rc6 Qd3 43. Ka2 Kh7 44. Rg2 1-0

[Event "EU-ch GT230 corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Mayr, Franz"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C63"]
[PlyCount "71"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 Nd4 5. Bc4 Nf6 6. 0-0 d6 7. exf5 Nxf5 8. Re1 Be7 9. d4 exd4 10. Nxd4 c6 11. Ne6 Bxe6 12. Bxe6 g6 13. Bg5 Rf8 14. Bxf5 gxf5 15. Bxf6 Rxf6 16. Qh5+ Kd7 17. Qxh7 Qf8 18. Rad1 Rf7 19. Qh3 Kc7 20. Ne2 Re8 21. Nd4 Kb8 22. Qb3 Rc8 23. Qe6 Bd8 24. Qe8 Qg7 25. Ne6 Qf6 26. Nxd8 Rxd8 27. Qe6 d5 28. Qxf6 Rxf6 29. Re7 f4 30. Rde1 Rdd6 31. R1e5 d4 32. Rh5 a6 33. Rhh7 Kc8 34. Rxb7 Rfe6 35. Rbe7 Kd8 36. Rxe6 1-0

[Event "EU-ch GT230 corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Bangiev, Alexander J"]
[Result "0-1"]
[ECO "D34"]
[PlyCount "58"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. g3 Nc6 6. Bg2 Nf6 7. 0-0 Be7 8. Nc3 0-0 9. a3 Be6 10. dxc5 Bxc5 11. b4 Be7 12. e3 Qd7 13. Bb2 Rfd8 14. Ne2 a6 15. Ned4 Rac8 16. Nxc6 Qxc6 17. Rc1 Qb6 18. Bd4 Qb5 19. Nd2 a5 20. bxa5 Qxa5 21. Rb1 b5 22. Nf3 Ne4 23. Qb3 Rb8 24. Ra1 Rdc8 25. Rfd1 Qa4 26. Rdb1 Rc1+ 27. Bf1 Rxf1+ 28. Kxf1 Qxb3 29. Rxb3 Bg4 0-1

[Event "EU-ch GT230 corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Mglosiek, Wladyslaw"]
[Result "0-1"]
[ECO "E14"]
[PlyCount "66"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 b6 3. d4 e6 4. Nc3 Bb7 5. e3 Be7 6. Bd3 0-0 7. 0-0 d5 8. cxd5 exd5 9. b3 Nbd7 10. Qc2 Bb4 11. Bb2 a6 12. Rac1 Bd6 13. Ne2 Ne4 14. Ng3 f5 15. Ne5 g6 16. f3 Nef6 17. Ne2 Re8 18. f4 Ne4 19. Bxe4 fxe4 20. Ng3 Rc8 21. Qf2 Bxe5 22. dxe5 Nc5 23. Rxc5 bxc5 24. f5 Rf8 25. f6 Qd7 26. Qf4 d4 27. exd4 cxd4 28. Qg5 Kh8 29. h4 Rf7 30. h5 Rg8 31. Rf4 gxh5 32. Qh4 d3 33. Qxh5 d2 0-1

[Event "EU-ch GT230 corr"]
[Site "ICCF corr"]
[Date "1984.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Molinsky, Herbert"]
[Result "0-1"]
[ECO "E13"]
[PlyCount "70"]
[EventDate "1984.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bg5 Bb7 5. e3 h6 6. Bh4 Bb4+ 7. Nc3 g5 8. Bg3 Ne4 9. Qc2 Bxc3+ 10. bxc3 d6 11. Bd3 Nxg3 12. hxg3 Nd7 13. a4 a5 14. Ke2 g4 15. Nh4 Nf6 16. f3 Qe7 17. Kf2 0-0-0 18. d5 Kb8 19. dxe6 Qxe6 20. Nf5 h5 21. Rab1 Bc6 22. Nd4 Qe8 23. Nxc6+ Qxc6 24. Rb5 gxf3 25. gxf3 Ng4+ 26. Ke2 Ne5 27. e4 Rdg8 28. Kf2 f5 29. Rhb1 h4 30. gxh4 Rxh4 31. Qd1 f4 32. Bf1 Rh2+ 33. Ke1 Rg3 34. Rxe5 dxe5 35. c5 Qxc5 0-1

[Event "DDR-ch M725 corr"]
[Site "DDR"]
[Date "1983.??.??"]
[Round "?"]
[White "Kuspiel, Manfred"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C96"]
[PlyCount "71"]
[EventDate "1983.12.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. Nbd2 cxd4 13. cxd4 Nc6 14. Nb3 exd4 15. Nbxd4 Nxd4 16. Nxd4 Bf6 17. Nf5 Ne5 18. Nxd6 Qc7 19. Nxc8 Rd8 20. Qe2 Raxc8 21. Bb3 Nd3 22. Rd1 Nxc1 23. Raxc1 Rxd1+ 24. Rxd1 Qf4 25. g3 Qe5 26. Rd7 Be7 27. Qf3 Rf8 28. Ra7 Bf6 29. Qg4 Qxb2 30. Rxf7 Qc1+ 31. Kg2 Rxf7 32. Qd7 h5 33. Qxf7+ Kh7 34. Qg8+ Kh6 35. Bf7 Bb2 36. h4 1-0

[Event "DDR-ch M669 corr"]
[Site "DDR"]
[Date "1981.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Hohenberger, Karl"]
[Result "0-1"]
[ECO "D41"]
[PlyCount "92"]
[EventDate "1981.05.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bc4 cxd4 8. Bxd5 exd5 9. Nxd4 Bb4 10. Qd3 Bxc3+ 11. Qxc3 Nxd4 12. Qxd4 0-0 13. Bd2 Be6 14. Bc3 Qg5 15. g3 Rfc8 16. h4 Qg4 17. Kd2 Rc4 18. Qxg4 Bxg4 19. Bd4 a6 20. Rhc1 b5 21. b3 Rcc8 22. Rc5 Rxc5 23. Bxc5 Bf3 24. Rc1 Rc8 25. b4 f6 26. Kd3 Kf7 27. Kd4 Ke6 28. a4 Be2 29. a5 Bf3 30. Rc2 Kf5 31. Rd2 h5 32. Kc3 Kg4 33. Rd4+ Be4 34. Kd2 Kf3 35. Ke1 g5 36. hxg5 fxg5 37. Rd2 h4 38. Kf1 hxg3 39. fxg3 Kxg3 40. Rf2 Rc6 41. Rf8 Bg2+ 42. Ke2 g4 43. Rd8 Kh2 44. Rh8+ Bh3 45. Bd4 Rc4 46. Be5+ Kg2 0-1

[Event "DDR-ch M669 corr"]
[Site "DDR"]
[Date "1981.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Scherf, Siegfried"]
[Result "0-1"]
[ECO "B12"]
[PlyCount "58"]
[EventDate "1981.05.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Ne2 e6 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Bd3 Bxd3 9. Qxd3 Nd7 10. 0-0 Ne7 11. f4 g6 12. hxg6 fxg6 13. c4 Nf5 14. Nxf5 gxf5 15. Bd2 dxc4 16. Qxc4 Kf7 17. Be3 Nb6 18. Qe2 h5 19. Rf3 h4 20. Nd2 Be7 21. Rh3 Nd5 22. Nf3 Nxe3 23. Qxe3 Qd5 24. b3 c5 25. Rc1 Rac8 26. Qd3 cxd4 27. Rxc8 Rxc8 28. Nxh4 Rc1+ 29. Kf2 Qe4 0-1

[Event "DDR-ch M670 corr"]
[Site "DDR"]
[Date "1981.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Weber, Bernd"]
[Result "0-1"]
[ECO "C56"]
[PlyCount "66"]
[EventDate "1981.05.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Bd2 Bb4 11. Nxd4 Nxd4 12. c3 0-0-0 13. cxb4 Qd5 14. Bc3 Bf5 15. Qxd4 Qxd4 16. Bxd4 Rxd4 17. Ng3 Be6 18. a3 Rd2 19. Re2 Rhd8 20. Rae1 Rxe2 21. Nxe2 Rd2 22. Nc3 Rxb2 23. Rc1 c6 24. g3 Rb3 25. b5 Rxa3 26. bxc6 bxc6 27. Nb5 Ra6 28. Nd6+ Kd7 29. Ne4 Ra5 30. Nc5+ Kc7 31. Nd3 Rb5 32. Nf4 Bf5 33. Re1 Rb1 0-1

[Event "DDR-ch M644 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Franz, Reinhardt"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "B30"]
[PlyCount "67"]
[EventDate "1980.05.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. Nc3 Nc6 4. e4 e5 5. d3 d6 6. Be2 Be7 7. 0-0 0-0 8. h3 h6 9. Nh2 a6 10. f4 Nd4 11. Nf3 Nxe2+ 12. Qxe2 Nd7 13. f5 Rb8 14. a4 Re8 15. Nd5 Nb6 16. Nxe7+ Qxe7 17. Nh2 Nd7 18. Be3 Nf6 19. g4 Nh7 20. Nf3 Bd7 21. Qd2 b5 22. axb5 axb5 23. Ra7 Ra8 24. Rfa1 Rxa7 25. Rxa7 b4 26. h4 f6 27. b3 Qf7 28. Qa2 Rd8 29. Qa5 Qe8 30. Qc7 Qe7 31. Ra6 Rc8 32. Qxd6 Qxd6 33. Rxd6 Nf8 34. Rd5 1-0

[Event "Baltic Sea tt4 corr"]
[Site "corr"]
[Date "1980.??.??"]
[Round "?"]
[White "Galimberti, Maurizio"]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "B41"]
[PlyCount "66"]
[EventDate "1980.??.??"]
[EventType "team (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c4 Nc6 4. d4 cxd4 5. Nxd4 Qc7 6. Nc3 e6 7. a3 Nf6 8. Bg5 Be7 9. Be2 0-0 10. 0-0 Ne5 11. Rc1 h6 12. Be3 d6 13. f4 Nc6 14. g4 Nh7 15. f5 Nxd4 16. Qxd4 exf5 17. Nd5 Qd8 18. exf5 Bf6 19. Nxf6+ Qxf6 20. Rcd1 Re8 21. Qb6 Qe7 22. Rd3 Ng5 23. Bxg5 Qxe2 24. Re3 Rxe3 25. Bxe3 Qxg4+ 26. Kf2 Bxf5 27. Qxd6 Re8 28. c5 Qe4 29. Re1 Re6 30. Qg3 Rg6 31. Qb8+ Kh7 32. Bg5 Qd4+ 33. Be3 Qh4+ 0-1

[Event "DDR-ch M620 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Gneuss, Werner"]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "E35"]
[PlyCount "108"]
[EventDate "1978.10.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 h6 7. Bxf6 Qxf6 8. a3 Bxc3+ 9. Qxc3 0-0 10. e3 c6 11. Nf3 Re8 12. Be2 Bg4 13. 0-0 Nd7 14. b4 Qd6 15. Rfe1 Re6 16. h3 Bh5 17. Nh4 Bxe2 18. Nf5 Qf8 19. Rxe2 g6 20. Nh4 f5 21. Qd3 Qf6 22. Nf3 g5 23. Nd2 Rae8 24. Rae1 R8e7 25. Nf1 g4 26. h4 Qxh4 27. Qxf5 Rf6 28. Qd3 h5 29. b5 Qg5 30. bxc6 bxc6 31. e4 dxe4 32. Rxe4 Ref7 33. R1e2 Nf8 34. Re5 Qh6 35. Re7 Ng6 36. Rxf7 Rxf7 37. g3 Ne7 38. Ne3 Qf6 39. d5 Qd6 40. Rd2 Rf3 41. Qa6 Rxe3 42. fxe3 Qxg3+ 43. Kf1 Qf3+ 44. Rf2 Qd1+ 45. Kg2 Qxd5+ 46. Kg1 g3 47. Rf4 Qd2 48. Qc4+ Nd5 49. Rg4+ hxg4 50. Qxg4+ Kf8 51. Qc8+ Ke7 52. Qb7+ Kd6 53. Qb8+ Kc5 54. Qxa7+ Kc4 0-1

[Event "DDR-ch M644 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Hanich, Willi"]
[Black "Sieber, Heinz"]
[Result "1/2-1/2"]
[ECO "B23"]
[PlyCount "79"]
[EventDate "1980.05.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. Nf3 d6 4. Nc3 a6 5. Bc4 Nf6 6. a4 Bg4 7. 0-0 e6 8. Be2 Be7 9. d3 0-0 10. h3 Bxf3 11. Bxf3 Nd4 12. Be3 Nxf3+ 13. Qxf3 d5 14. Ne2 dxe4 15. dxe4 Qc7 16. g4 Nd7 17. e5 Nb6 18. Qe4 Nd5 19. Bf2 Rfd8 20. c3 Rac8 21. Rfd1 b5 22. f5 exf5 23. gxf5 Qc6 24. axb5 axb5 25. Ra7 Bf8 26. Raa1 Nb6 27. Qxc6 Rxd1+ 28. Rxd1 Rxc6 29. Rd8 Rc8 30. Rxc8 Nxc8 31. Ng3 Nb6 32. b4 Na4 33. bxc5 Bxc5 34. Ne2 Be7 35. Bd4 b4 36. c4 b3 37. Nc3 b2 38. Kf2 Kf8 39. Ke2 Ke8 40. Kd3 1/2-1/2

[Event "DDR-ch M644 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Hein, Ralf"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "D90"]
[PlyCount "69"]
[EventDate "1980.05.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 g6 5. cxd5 cxd5 6. Bf4 a6 7. e3 Bg7 8. Be2 Nc6 9. 0-0 0-0 10. Ne5 Nxe5 11. dxe5 Nd7 12. Qd4 e6 13. Rac1 Qb6 14. b4 Qxd4 15. exd4 f6 16. Bg4 Re8 17. Bxe6+ Rxe6 18. Nxd5 Rc6 19. Ne7+ Kf8 20. Nxc6 bxc6 21. e6 Nb6 22. Rxc6 Nd5 23. Rfc1 Bxe6 24. Bd2 Kf7 25. R1c5 Bf8 26. Ra5 Bxb4 27. Bxb4 Nxb4 28. Rb6 Rc8 29. h3 Nd5 30. Rbxa6 g5 31. Rd6 Nf4 32. d5 Bf5 33. Rc6 Re8 34. Rc7+ Kg6 35. d6 1-0

[Event "FRG corr"]
[Site "GER corr"]
[Date "1980.??.??"]
[Round "?"]
[White "Lang, Ferdinand"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "A00"]
[PlyCount "39"]
[EventDate "1980.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. Nc3 e5 2. e3 d5 3. Qh5 Be6 4. Qxe5 Nd7 5. Qg3 Ngf6 6. Be2 g6 7. f4 Be7 8. Nf3 Nc5 9. d3 c6 10. Bd2 Qb6 11. Rb1 Rd8 12. 0-0 0-0 13. Nd4 Bd6 14. Qf2 Ng4 15. Qh4 h5 16. h3 Nh6 17. f5 Bc8 18. Bxh5 Bxf5 19. Qg5 Be5 20. Qxh6 1-0

[Event "DDR-ch M643 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Miethke, Ehrhard"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "B01"]
[PlyCount "93"]
[EventDate "1980.04.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. Nbd2 Nd7 8. Ne4 0-0 9. Ng3 c5 10. c3 Qc7 11. h3 Bxf3 12. Bxf3 N5f6 13. Ne2 Rac8 14. Qa4 a6 15. Bf4 Qb6 16. Be3 Qa7 17. b4 cxb4 18. d5 Nc5 19. Bxc5 Qxc5 20. cxb4 Qb6 21. dxe6 fxe6 22. Qb3 Kh8 23. Nf4 e5 24. Ne6 Rfe8 25. Ng5 h6 26. Nf7+ Kh7 27. Nxe5 Bxb4 28. Nd3 a5 29. a3 Bc5 30. Nxc5 Qxc5 31. Qxb7 Qg5 32. Qb2 Kh8 33. Rfd1 Red8 34. Rxd8+ Rxd8 35. Rc1 Nh5 36. Re1 Rf8 37. Re5 Rf5 38. Qb8+ Kh7 39. Qb1 g6 40. Rxf5 gxf5 41. Bxh5 Qxh5 42. Qb7+ Kg6 43. Qb6+ Kg5 44. Qxa5 Qd1+ 45. Kh2 Qd6+ 46. g3 h5 47. Qb4 1-0

[Event "DDR-ch M620 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Rau, Johann"]
[Black "Sieber, Heinz"]
[Result "1/2-1/2"]
[ECO "A17"]
[PlyCount "93"]
[EventDate "1978.10.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 Bb4 4. a3 Bxc3 5. bxc3 0-0 6. g3 c5 7. Bg2 Nc6 8. d3 d5 9. cxd5 exd5 10. 0-0 h6 11. h3 Be6 12. Bf4 Nh5 13. Qc1 Nxf4 14. Qxf4 Re8 15. Rfb1 Qc8 16. Kh2 b6 17. Rb2 Qa6 18. h4 Rad8 19. Nd2 Ne7 20. h5 Qc8 21. a4 Bg4 22. Bf3 Bxf3 23. Nxf3 Nc6 24. g4 Re6 25. e3 Rf6 26. Qg3 c4 27. d4 Re8 28. Nh4 g6 29. g5 hxg5 30. Qxg5 Qd8 31. Rg1 Re4 32. f3 Qd6+ 33. Kh1 Ree6 34. hxg6 fxg6 35. e4 dxe4 36. fxe4 Ne7 37. Rbg2 Rxe4 38. Nxg6 Rxg6 39. Qxg6+ Nxg6 40. Rxg6+ Qxg6 41. Rxg6+ Kf7 42. Rc6 Re6 43. Rxc4 Kf6 44. Rc7 a5 45. Kg2 Kf5 46. Kf3 Rh6 47. Ke3 1/2-1/2

[Event "DDR-ch M643 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Schaefer, Herbert"]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "E12"]
[PlyCount "54"]
[EventDate "1980.04.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 Nxd5 7. e3 Nd7 8. Bd3 Be7 9. Qc2 h6 10. Nxd5 Bxd5 11. e4 Bb7 12. 0-0 0-0 13. b4 c5 14. bxc5 bxc5 15. Rb1 Qc8 16. Qb3 Ba6 17. Bxa6 Qxa6 18. Qb7 Qa4 19. Bf4 cxd4 20. Nxd4 Bc5 21. Nb5 Nf6 22. Rfe1 Qc2 23. Bg3 Ng4 24. Rbc1 Bxf2+ 25. Kh1 Qd2 26. Bd6 Bxe1 27. Rxe1 Qxe1# 0-1

[Event "DDR-ch M621 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Schueler, Wolfgang"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "59"]
[EventDate "1978.11.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. Nf3 d6 4. g3 Nf6 5. d3 g6 6. Bg2 Bg7 7. 0-0 Bg4 8. h3 Bd7 9. c3 0-0 10. Na3 Qb6 11. Nc4 Qc7 12. Ne3 Rac8 13. g4 e6 14. f5 exf5 15. exf5 h6 16. fxg6 fxg6 17. g5 hxg5 18. Nxg5 Bh6 19. Rxf6 Rxf6 20. Nd5 Qd8 21. Nxf6+ Qxf6 22. Ne4 Qh8 23. Bxh6 Qxh6 24. Nf6+ Kg7 25. Nxd7 Ne7 26. Qf3 Nf5 27. Re1 Rc7 28. Re7+ Nxe7 29. Qf6+ Kg8 30. Qxe7 1-0

[Event "FRG corr"]
[Site "GER corr"]
[Date "1980.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Hartmann, Wolfgang"]
[Result "0-1"]
[ECO "A52"]
[PlyCount "74"]
[EventDate "1980.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. a3 Ngxe5 6. Nxe5 Nxe5 7. e4 d6 8. Nc3 Be7 9. Be2 0-0 10. 0-0 Bf6 11. Qc2 c6 12. Be3 Be6 13. Rad1 Nxc4 14. Bxc4 Bxc4 15. Rfe1 Re8 16. Na4 d5 17. exd5 cxd5 18. Nc5 b6 19. Nd3 Rc8 20. Qb1 Bb3 21. Rc1 d4 22. Rxc8 Qxc8 23. Rc1 Qf5 24. Bd2 Re2 25. Be1 Bd5 26. Nf4 Be4 27. Qa2 Rc2 28. Rxc2 Bxc2 29. Qc4 Qc5 30. Qe2 Qe5 31. Bd2 Qxe2 32. Nxe2 Kf8 33. Kf1 Ke7 34. Ke1 Kd6 35. Nf4 Kc5 36. Bc1 Be5 37. h3 Kc4 0-1

[Event "DDR-ch M643 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Hohenberger, Karl"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "82"]
[EventDate "1980.04.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. Bc4 Be7 5. a3 h6 6. d3 d6 7. h3 0-0 8. Be3 a6 9. Qd2 Kh7 10. Ne2 Be6 11. Bxe6 fxe6 12. Ng3 Qe8 13. d4 Nh5 14. Nxh5 Qxh5 15. 0-0-0 exd4 16. Nxd4 Nxd4 17. Bxd4 e5 18. Be3 Qf7 19. Kb1 a5 20. g4 Qg6 21. Rde1 Rf3 22. g5 Bxg5 23. Bxg5 Qxg5 24. Qd5 Ra7 25. Rhg1 Qf6 26. Rg2 Rxf2 27. Rgg1 Qf7 28. Qb5 Rf4 29. Rgf1 Rf6 30. Rxf6 gxf6 31. Rg1 b6 32. Qf1 f5 33. exf5 Ra8 34. f6 Rg8 35. Qf5+ Kh8 36. Rxg8+ Kxg8 37. h4 Kh8 38. h5 e4 39. Kc1 e3 40. c3 c5 41. Kc2 Qh7 0-1

[Event "DDR-ch M643 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Pfeiffer, Alfred"]
[Result "0-1"]
[ECO "C03"]
[PlyCount "72"]
[EventDate "1980.04.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. e5 c5 5. c3 Nc6 6. Ndf3 c4 7. Qc2 Bd7 8. Ne2 Nge7 9. Nf4 Ng6 10. Be2 Be7 11. 0-0 b5 12. Nh5 0-0 13. a3 Na5 14. Be3 Nb3 15. Rad1 a5 16. Nd2 b4 17. Nxb3 Ba4 18. Ra1 bxa3 19. bxa3 Bxb3 20. Qd2 Re8 21. f4 Ba4 22. Bg4 Nh4 23. Ng3 g6 24. Nh1 Rb8 25. g3 Nf5 26. Bxf5 exf5 27. Nf2 Rb3 28. g4 Bd7 29. g5 Bxa3 30. Nd1 Qb6 31. Qg2 Bc6 32. h4 a4 33. Rf2 Bf8 34. h5 Rb1 35. Rxb1 Qxb1 36. Qf3 a3 0-1

[Event "DDR-ch M644 corr"]
[Site "DDR"]
[Date "1980.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Steffan, Johannes"]
[Result "1/2-1/2"]
[ECO "D47"]
[PlyCount "50"]
[EventDate "1980.05.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 e6 3. Nf3 d5 4. e3 c6 5. Bd3 Nbd7 6. Nc3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. 0-0 b4 10. Ne4 Be7 11. b3 Nxe4 12. Bxe4 Nf6 13. Bd3 0-0 14. Bb2 c5 15. Ne5 cxd4 16. Bxd4 Qd5 17. f3 Bc5 18. Bc4 Qd6 19. Qd3 Bxd4 20. Qxd4 Qxd4 21. exd4 Rad8 22. Rfd1 Rd6 23. Nd3 a5 24. Nc5 Bc6 25. a3 Rfd8 1/2-1/2

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1979.??.??"]
[Round "?"]
[White "Ruhbaum, H."]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "C51"]
[PlyCount "100"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Bd6 6. 0-0 Na5 7. Qa4 c6 8. Be2 b5 9. Qc2 Ne7 10. d4 exd4 11. cxd4 0-0 12. e5 Bb8 13. Rd1 Ng6 14. Nc3 d6 15. Ba3 Re8 16. exd6 Bxd6 17. Bxd6 Qxd6 18. d5 a6 19. dxc6 Qxc6 20. Ng5 Bb7 21. Bf3 Qc7 22. Bxb7 Nxb7 23. Qb2 Rac8 24. Rac1 Qf4 25. Nf3 Ne5 26. Nxe5 Qxe5 27. Qa1 b4 28. Re1 Qf6 29. Nd5 Rxe1+ 30. Rxe1 Qxa1 31. Rxa1 Rc4 32. Ne3 Rc5 33. Kf1 a5 34. Ke2 g6 35. Kd2 Nd6 36. f3 Nb5 37. Rc1 Rh5 38. h3 Na3 39. Rc8+ Kg7 40. Kc1 Re5 41. Nc4 Nxc4 42. Rxc4 Re2 43. Rc2 Rxc2+ 44. Kxc2 a4 45. Kd3 Kf6 46. Kc4 b3 47. axb3 axb3 48. Kxb3 Ke5 49. Kc3 Kf4 50. Kd4 Kg3 0-1

[Event "DDR-Cup6 sf03 corr"]
[Site "DDR"]
[Date "1979.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Bender, Herbert"]
[Result "1-0"]
[ECO "B94"]
[PlyCount "71"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 Qb6 8. Nb3 h6 9. Bxf6 Nxf6 10. Qd2 e6 11. 0-0-0 Be7 12. Be2 Qc7 13. Bf3 Nd7 14. Kb1 Nc5 15. Nxc5 dxc5 16. e5 Bd7 17. Qf2 0-0-0 18. Rd3 Kb8 19. Rhd1 c4 20. R3d2 f5 21. g4 g6 22. Qg2 Bc5 23. Bxb7 Bb5 24. Rxd8+ Rxd8 25. Rxd8+ Qxd8 26. a4 Qb6 27. gxf5 gxf5 28. axb5 Qxb7 29. Qg8+ Qc8 30. Qxc8+ Kxc8 31. bxa6 Kb8 32. b3 Ka7 33. Nb5+ Kxa6 34. Nc7+ Kb6 35. Nxe6 Be3 36. Ng7 1-0

[Event "DDR-Cup corr"]
[Site "DDR"]
[Date "1979.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Fitzke"]
[Result "1-0"]
[ECO "C04"]
[PlyCount "73"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3 e5 5. dxe5 Nxe5 6. f4 Nc6 7. e5 f6 8. Bd3 Be6 9. f5 Nxe5 10. Ndf3 Nxd3+ 11. Qxd3 Bc8 12. Be3 Bd6 13. 0-0-0 Ne7 14. Nd4 0-0 15. g4 c6 16. Nge2 Qc7 17. h4 Bd7 18. Rdf1 Be5 19. h5 h6 20. Nf4 Bxd4 21. Qxd4 b6 22. Ng6 Nxg6 23. hxg6 Qe5 24. Qd2 Rfe8 25. Bxh6 gxh6 26. Qxh6 Qe3+ 27. Qxe3 Rxe3 28. Rh7 Bxf5 29. gxf5 Rae8 30. Rf7 Re1+ 31. Rxe1 Rxe1+ 32. Kd2 Rf1 33. Rxf6 Rf2+ 34. Ke3 Rxb2 35. Rxc6 Rb5 36. Kd4 Ra5 37. f6 1-0

[Event "DDR-Cup6 sf03 corr"]
[Site "DDR"]
[Date "1979.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Herrmann, Frank"]
[Result "0-1"]
[ECO "C08"]
[PlyCount "42"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nf6 6. dxc5 Bxc5 7. Nb3 Be7 8. Bd3 0-0 9. h3 Nc6 10. c3 Re8 11. 0-0 Ne4 12. Qc2 Bd6 13. Be3 Bf5 14. Rfe1 Rc8 15. a3 Qd7 16. Nbd4 Bxh3 17. Bxe4 dxe4 18. Ng5 Bxg2 19. Qe2 Nxd4 20. Bxd4 Bf3 21. Nxf3 Qg4+ 0-1

[Event "DDR corr"]
[Site "DDR"]
[Date "1979.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Junge"]
[Result "1-0"]
[ECO "C26"]
[PlyCount "47"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. d3 d6 4. g3 Nc6 5. Nge2 Be7 6. Bg2 Be6 7. f4 exf4 8. Bxf4 Qd7 9. d4 Bg4 10. Qd2 0-0-0 11. 0-0-0 Rhe8 12. h3 Bh5 13. g4 Bg6 14. Ng3 h6 15. Qf2 a6 16. d5 Nb8 17. Qa7 Nh7 18. a4 Bg5 19. Bxg5 hxg5 20. Rd4 Nf6 21. Rb4 c5 22. dxc6 Nxc6 23. Qa8+ Nb8 24. Rc4+ 1-0

[Event "DDR-Cup6 sf03 corr"]
[Site "DDR"]
[Date "1979.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Preussner, Michael"]
[Result "0-1"]
[ECO "C26"]
[PlyCount "77"]
[EventDate "1979.??.??"]
[EventType "tourn (corr)"]
[EventRounds "14"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. d3 Nc6 4. f4 d5 5. fxe5 Nxe5 6. d4 Ng6 7. e5 Ne4 8. Nxe4 dxe4 9. g3 c5 10. Be3 cxd4 11. Bxd4 Bd7 12. Bg2 Bc6 13. Qd2 Nxe5 14. 0-0-0 Qc7 15. Nh3 Be7 16. Qc3 Bd6 17. Rhf1 f6 18. Nf4 Qe7 19. Qb3 a5 20. Bg1 a4 21. Qe6 Nd3+ 22. Kb1 Nxf4 23. Qxe7+ Kxe7 24. gxf4 Rad8 25. Be3 Rhe8 26. Bb6 Ra8 27. c4 Bb8 28. h4 Ba7 29. Bxa7 Rxa7 30. Rd4 f5 31. Rfd1 Raa8 32. Kc2 Rad8 33. Kc3 Rxd4 34. Rxd4 Rd8 35. Bf1 Rxd4 36. Kxd4 Kf6 37. b4 axb3 38. axb3 h6 39. h5 0-1

[Event "DDR-ch M621 corr"]
[Site "DDR"]
[Date "1978.11.??"]
[Round "?"]
[White "Mueller, Siegfried"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "A18"]
[PlyCount "77"]
[EventDate "1978.11.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 Ne4 5. Nxe4 dxe4 6. Qg4 Nc6 7. Qxe4 Qd4 8. Qxd4 Nxd4 9. Kd1 Bd7 10. d3 a5 11. Ne2 Nxe2 12. Bxe2 Be7 13. Bf3 Rb8 14. Bd2 a4 15. b4 b5 16. a3 c5 17. Rb1 0-0 18. Ke2 Rfc8 19. Rhc1 h6 20. g3 cxb4 21. axb4 Bc6 22. Bxc6 Rxc6 23. c5 Rd8 24. Bc3 f6 25. f4 f5 26. d4 Kf7 27. Rd1 g5 28. Kf3 g4+ 29. Ke3 h5 30. h3 Rg8 31. hxg4 hxg4 32. Rh1 Rcc8 33. Rh7+ Rg7 34. Rbh1 Rcg8 35. d5 exd5 36. e6+ Kf8 37. Rxg7 Rxg7 38. Bxg7+ Kxg7 39. Kd4 1-0

[Event "DDR-ch M621 corr"]
[Site "DDR"]
[Date "1978.11.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Kopczak, Ludwig"]
[Result "0-1"]
[ECO "C27"]
[PlyCount "72"]
[EventDate "1978.11.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 Nc6 6. Nb5 g6 7. Qf3 f5 8. Qd5 Qf6 9. Nxc7+ Kd8 10. Nxa8 b6 11. d3 Bb7 12. h4 Ne7 13. Bg5 Nxd5 14. Bxf6+ Nxf6 15. Nxb6 axb6 16. f3 Bh6 17. Nh3 Be3 18. a4 Kc7 19. Ke2 Bc5 20. Ng5 Bd5 21. c4 Bc6 22. a5 Nh5 23. axb6+ Kxb6 24. Rh2 Bd4 25. Bc2 h6 26. Nh3 Rb8 27. Ra2 Ng3+ 28. Ke1 Kc5 29. Ra5+ Kb6 30. Ra2 Kc5 31. Ra5+ Kb4 32. Ra3 Ra8 33. Rxa8 Bxa8 34. Nf2 Bxb2 35. Nd1 Bd4 36. Rh3 f4 0-1

[Event "DDR-ch M620 corr"]
[Site "DDR"]
[Date "1978.10.??"]
[Round "?"]
[White "Pietruske, Siegfried"]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "C15"]
[PlyCount "78"]
[EventDate "1978.10.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd2 dxe4 5. Qg4 Nf6 6. Qxg7 Rg8 7. Qh6 c5 8. dxc5 Bxc5 9. 0-0-0 Nbd7 10. Bg5 Qa5 11. Bxf6 Rg6 12. Qxh7 Nxf6 13. Qh8+ Ke7 14. Nh3 Rg8 15. Qh6 Bd7 16. Kb1 Bc6 17. Bc4 Rg4 18. Rhf1 Rag8 19. Nf4 R8g7 20. Be2 Rh7 21. Qxh7 Nxh7 22. Bxg4 Bb4 23. Nfe2 Nf6 24. Bh3 Qe5 25. g3 Bxc3 26. Nxc3 Qh5 27. Bg2 Qxh2 28. Rg1 b5 29. a3 a6 30. Ne2 Ng4 31. Rdf1 f5 32. b3 Bd5 33. Kb2 Kd6 34. c3 Kc5 35. Kc2 e5 36. b4+ Kc6 37. Kd2 e3+ 38. fxe3 Bxg2 39. Rxf5 e4 0-1

[Event "DDR-ch M620 corr"]
[Site "DDR"]
[Date "1978.10.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Griesbach, Roland"]
[Result "0-1"]
[ECO "B18"]
[PlyCount "44"]
[EventDate "1978.10.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Bc4 e6 8. Qe2 Ngf6 9. c3 Qc7 10. Ne5 Nxe5 11. dxe5 Nd7 12. f4 0-0-0 13. Be3 Nc5 14. Bd4 b5 15. b4 Na4 16. Bb3 Bxb4 17. Rc1 Qa5 18. Qf3 Rxd4 19. Qxc6+ Kb8 20. Bxa4 Qxa4 21. cxb4 Qxb4+ 22. Rc3 Rc4 0-1

[Event "DDR-ch M620 corr"]
[Site "DDR"]
[Date "1978.10.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Krabbe, Wolf Dieter"]
[Result "0-1"]
[ECO "B73"]
[PlyCount "66"]
[EventDate "1978.10.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[EventCountry "DDR"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 Nc6 8. Qd2 Nxd4 9. Bxd4 0-0 10. 0-0 Bd7 11. Rad1 Bc6 12. f3 Ne8 13. Bxg7 Nxg7 14. b3 Qc7 15. Nb1 f5 16. e5 dxe5 17. Qc3 Rac8 18. Qb2 e4 19. fxe4 Bxe4 20. Bc4+ e6 21. Na3 Qc5+ 22. Kh1 Rfd8 23. c3 a6 24. b4 Qc6 25. Rc1 Bd3 26. Bxd3 Rxd3 27. Rfd1 Qxc3 28. Qxc3 Rcxc3 29. Nb1 Rxc1 30. Rxc1 e5 31. Nc3 e4 32. Kg1 Ne6 33. g3 Nd4 0-1

[Event "EU-chT2 corr7887"]
[Site "ICCF corr"]
[Date "1978.??.??"]
[Round "?"]
[White "Bergdahl, Assar"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C63"]
[PlyCount "41"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 Nd4 5. 0-0 Nxb5 6. Nxb5 d6 7. d4 Bd7 8. Nc3 exd4 9. Nxd4 fxe4 10. Nxe4 c5 11. Re1 Be7 12. Nxd6+ Kf8 13. Ne6+ Bxe6 14. Rxe6 Qd7 15. Qf3+ Nf6 16. Qf5 Rd8 17. Bf4 Bxd6 18. Bxd6+ Kg8 19. Rae1 h5 20. Be7 Qd5 21. Rxf6 1-0

[Event "DDR-ch H239 corr"]
[Site "DDR"]
[Date "1978.??.??"]
[Round "?"]
[White "Hofmann, Falk"]
[Black "Sieber, Heinz"]
[Result "0-1"]
[ECO "E48"]
[PlyCount "72"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nge2 d5 7. a3 cxd4 8. exd4 dxc4 9. Bxc4 Be7 10. 0-0 0-0 11. Be3 a6 12. Qc2 b5 13. Bd3 Bb7 14. b4 Bd6 15. Ne4 h6 16. Rfd1 Nxe4 17. Bxe4 Rc8 18. Qb2 Bxh2+ 19. Kxh2 Qh4+ 20. Kg1 Qxe4 21. Ng3 Qg6 22. Qe2 Ne7 23. Rac1 Nf5 24. Qh5 Nxg3 25. Qxg6 Ne2+ 26. Kf1 fxg6 27. Kxe2 Bxg2 28. Rg1 Bf3+ 29. Kd3 Rxc1 30. Bxc1 g5 31. Be3 g4 32. Rc1 h5 33. Rc5 h4 34. Rh5 g3 35. fxg3 Bxh5 36. gxh4 Rf3 0-1

[Event "DDR-ch H239 corr"]
[Site "DDR"]
[Date "1978.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Hofmann, Falk"]
[Result "1-0"]
[ECO "B71"]
[PlyCount "89"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nc6 7. Nxc6 bxc6 8. e5 dxe5 9. Qxd8+ Kxd8 10. fxe5 Ng4 11. Bf4 Be6 12. Ne4 Bh6 13. Bxh6 Nxh6 14. 0-0-0+ Kc7 15. Nc5 Bf5 16. h3 Rad8 17. Bc4 g5 18. g4 Bg6 19. e6 Rxd1+ 20. Rxd1 Rd8 21. Rxd8 Kxd8 22. exf7 Bxf7 23. Bd3 Bg8 24. Be4 Kc7 25. Kd2 Kd6 26. b4 Bxa2 27. Bxh7 Bd5 28. Be4 Ke5 29. Ke3 Ng8 30. Nd3+ Kd6 31. Bxd5 cxd5 32. Kd4 Nf6 33. Ne5 Ne4 34. c4 Nf2 35. c5+ Ke6 36. c6 Kd6 37. b5 Ne4 38. Nf7+ Kc7 39. Kxd5 Nf6+ 40. Ke6 a6 41. bxa6 Kxc6 42. Nxg5 Kb6 43. Kxe7 Nd5+ 44. Kf7 Ne3 45. Ne6 1-0

[Event "DDR-ch H240 corr"]
[Site "DDR"]
[Date "1978.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Junge, Wolfgang"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "55"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Nc3 Nxc3 5. dxc3 f6 6. Nh4 g6 7. 0-0 Nc6 8. Re1 Qe7 9. b4 d6 10. f4 Be6 11. Bd5 Bxd5 12. Qxd5 Qf7 13. Qb5 0-0-0 14. fxe5 dxe5 15. a4 f5 16. a5 Rd5 17. Qc4 Qd7 18. Be3 e4 19. Qb3 Rb5 20. Red1 Qe8 21. a6 Bg7 22. axb7+ Rxb7 23. Ra6 Bf6 24. Qd5 Bxh4 25. Rxc6 Kb8 26. Ra1 f4 27. Bxa7+ Rxa7 28. Rxa7 1-0

[Event "DDR-ch H240 corr"]
[Site "DDR"]
[Date "1978.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Nicklich, Wolfgang"]
[Result "1-0"]
[ECO "E49"]
[PlyCount "95"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nge2 d5 7. a3 Bxc3+ 8. bxc3 dxc4 9. Bxc4 Qc7 10. 0-0 0-0 11. Ng3 Rd8 12. Qc2 Na5 13. Bd3 c4 14. Be2 b5 15. e4 Nb3 16. Ra2 Nxc1 17. Qxc1 Bb7 18. Qe3 h6 19. f4 a5 20. f5 e5 21. d5 Ba6 22. Nh5 Nxh5 23. Bxh5 Qa7 24. Qxa7 Rxa7 25. f6 g6 26. Bd1 Rb7 27. g4 Rd6 28. h4 Rdb6 29. h5 Rd7 30. g5 hxg5 31. Rg2 Rdd6 32. hxg6 fxg6 33. f7+ Kf8 34. Bg4 Rb8 35. Be6 b4 36. Rxg5 b3 37. Rxg6 Ke7 38. Rg7 Rf8 39. Rg5 Bc8 40. Bxc8 Rxc8 41. f8Q+ Rxf8 42. Rxe5+ Kd7 43. Rxf8 Rg6+ 44. Kf2 Rb6 45. Re6 Rb5 46. Rf7+ Kd8 47. Rh6 Ke8 48. Ra7 1-0

[Event "DDR-ch H239 corr"]
[Site "DDR"]
[Date "1978.??.??"]
[Round "?"]
[White "Sieber, Heinz"]
[Black "Weder, Erhard"]
[Result "1-0"]
[ECO "C26"]
[PlyCount "73"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. g3 c6 4. d3 Bb4 5. Nge2 d6 6. a3 Ba5 7. Bg2 0-0 8. Bg5 h6 9. Bxf6 Qxf6 10. 0-0 Be6 11. f4 Bg4 12. fxe5 Qxe5 13. d4 Qe7 14. b4 Bb6 15. Qd2 Bxe2 16. Nxe2 Nd7 17. Rae1 a5 18. c4 axb4 19. axb4 c5 20. Kh1 cxb4 21. Rb1 Ba5 22. Rf5 Nb6 23. Qd3 Rfc8 24. Rc1 Nd7 25. Nf4 g6 26. Nd5 Qd8 27. Rf2 b5 28. Qe3 bxc4 29. Qxh6 Qf8 30. Qh3 Bb6 31. Rcf1 f5 32. exf5 g5 33. f6 Bxd4 34. Ne7+ Kf7 35. Qh5+ Ke6 36. Bd5+ Ke5 37. Qxg5# 1-0

[Event "DDR-ch H corr"]
[Site "DDR"]
[Date "1978.??.??"]
[Round "?"]
[White "Weder, Erhard"]
[Black "Sieber, Heinz"]
[Result "1/2-1/2"]
[ECO "C10"]
[PlyCount "78"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ Qxf6 6. Nf3 h6 7. Be2 Bd6 8. b3 b6 9. Bb2 Bb7 10. Rb1 Qe7 11. 0-0 Nd7 12. Re1 Nf6 13. Bd3 0-0 14. c4 Qd8 15. Ne5 c5 16. f4 cxd4 17. a3 Qc7 18. b4 a5 19. Bxd4 axb4 20. axb4 Ra2 21. Re2 Rfa8 22. Rxa2 Rxa2 23. Bf1 Ne4 24. Qb3 Ra8 25. Qe3 Qe7 26. Nd3 Rc8 27. c5 bxc5 28. bxc5 Bb8 29. Ne5 Bxe5 30. fxe5 Qd7 31. Bd3 Ng5 32. h4 Nh7 33. Be4 Bxe4 34. Qxe4 Nf8 35. Rb6 Qd5 36. Qxd5 exd5 37. Rd6 Ne6 38. Rxd5 Nxd4 39. Rxd4 Rxc5 1/2-1/2

[Event "DDR-ch H239 corr"]
[Site "DDR"]
[Date "1978.??.??"]
[Round "?"]
[White "Wolff, Heinz"]
[Black "Sieber, Heinz"]
[Result "1/2-1/2"]
[ECO "D51"]
[PlyCount "70"]
[EventDate "1978.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "DDR"]
[SourceTitle "Corr Nr. 1"]
[Source "ChessBase"]
[SourceDate "1997.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Bg5 Be7 4. Nc3 c6 5. Nf3 d5 6. e3 Nbd7 7. cxd5 cxd5 8. Bd3 h6 9. Bh4 a6 10. 0-0 b5 11. a3 Bb7 12. Qe2 0-0 13. e4 dxe4 14. Nxe4 Nxe4 15. Bxe7 Qxe7 16. Bxe4 Bxe4 17. Qxe4 Nf6 18. Qd3 Rfd8 19. Rfe1 Rac8 20. Rac1 Nd5 21. Rc2 Rxc2 22. Qxc2 Qd6 23. Ne5 Nb6 24. Rd1 Rc8 25. Qd3 Qc7 26. h3 Na4 27. Qd2 Qc2 28. b4 Qb3 29. Ra1 f6 30. Nd7 Qd5 31. Nc5 Nxc5 32. bxc5 Rxc5 33. Rd1 Rc4 34. f4 Qc6 35. Qe3 Rc3 1/2-1/2

[Event "corr1"]
[Site "corr"]
[Date "1972.??.??"]
[Round "?"]
[White "Gerhard, Heinz"]
[Black "Sieber, Heinz"]
[Result "1-0"]
[ECO "C82"]
[PlyCount "37"]
[EventDate "1972.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 a6 6. Ba4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Nc5 10. Nd4 Nxe5 11. f4 Nc4 12. Re1 Ne4 13. f5 Bd7 14. Bxc4 bxc4 15. Nd2 Be7 16. Nxe4 dxe4 17. Rxe4 c5 18. Bg5 f6 19. Bxf6 1-0

