[Event "GER Seniors Derby 08th"]
[Site "Wesel Undeloh"]
[Date "2009.04.19"]
[Round "7.22"]
[White "Mack, Friedemann"]
[Black "Meinking, Karl Heinz"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1300"]
[BlackElo "1515"]
[PlyCount "38"]
[EventDate "2009.04.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 e6 5. Bd2 Nd7 6. Bd3 Ne7 7. 0-0 h6 8. Re1 a6 9. Ne2 b6 10. d5 e5 11. Ng3 Bb7 12. b4 Nf6 13. c3 Bc8 14. Qa4+ Bd7 15. Qd1 Bg4 16. h3 Bd7 17. a4 g5 18. Nf5 Bxf5 19. exf5 c5 0-1

[Event "GER Seniors Derby 08th"]
[Site "Wesel Undeloh"]
[Date "2009.04.18"]
[Round "5.21"]
[White "Hesse, Klaus Dieter"]
[Black "Mack, Friedemann"]
[Result "1-0"]
[ECO "C30"]
[WhiteElo "1633"]
[BlackElo "1300"]
[PlyCount "57"]
[EventDate "2009.04.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. f4 Nc6 3. Nf3 d6 4. Bc4 Be7 5. 0-0 Nf6 6. d3 Bg4 7. c3 Na5 8. Bb3 c6 9. Kh1 0-0 10. Be3 b6 11. Bc2 Nh5 12. Qd2 Bf6 13. Na3 Nxf4 14. Bxf4 exf4 15. Qxf4 Be6 16. Qd2 Nb7 17. d4 g6 18. Bd3 Bg4 19. Nc2 Bxf3 20. gxf3 Qe7 21. Ne3 Nd8 22. f4 b5 23. Qg2 Ne6 24. Rf3 Bg7 25. Raf1 a6 26. f5 Qg5 27. fxe6 Qxg2+ 28. Kxg2 fxe6 29. Ng4 1-0

[Event "GER Seniors Derby 08th"]
[Site "Wesel Undeloh"]
[Date "2009.04.18"]
[Round "6.22"]
[White "Theissen, Bernhard"]
[Black "Mack, Friedemann"]
[Result "1-0"]
[ECO "C21"]
[WhiteElo "1530"]
[BlackElo "1300"]
[PlyCount "21"]
[EventDate "2009.04.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Bc4 Qe7 5. Nxc3 Nf6 6. Qc2 c6 7. Nge2 d5 8. exd5 Nxd5 9. Bxd5 cxd5 10. Nxd5 Qe5 11. Qxc8# 1-0

[Event "GER Seniors Derby 08th"]
[Site "Wesel Undeloh"]
[Date "2009.04.17"]
[Round "4.20"]
[White "Mack, Friedemann"]
[Black "Lietz, Helmuth"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "1300"]
[BlackElo "1632"]
[PlyCount "62"]
[EventDate "2009.04.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Bb5 Bd7 6. Nc3 e6 7. 0-0 Nf6 8. Nxc6 Bxc6 9. Bxc6+ bxc6 10. Re1 Be7 11. Bf4 e5 12. Bg3 0-0 13. Qd3 Nh5 14. Qf3 Nxg3 15. Qxg3 Qc7 16. b3 f5 17. Qd3 Qb7 18. exf5 Rad8 19. Qh3 Rf6 20. Ne4 Rh6 21. Qf3 d5 22. Nd2 e4 23. Qe3 Rf8 24. g4 Qc7 25. h3 Bd6 26. Kg2 Bf4 27. Qe2 Re8 28. c4 Qe5 29. Nf1 Qc3 30. Ng3 d4 31. Rac1 Bxc1 0-1

[Event "GER Seniors Derby 08th"]
[Site "Wesel Undeloh"]
[Date "2009.04.16"]
[Round "1.20"]
[White "Mack, Friedemann"]
[Black "Thieme, Wolfgang"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "1300"]
[BlackElo "1774"]
[PlyCount "60"]
[EventDate "2009.04.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 d5 4. exd5 exd5 5. Qe2+ Be7 6. d3 Nf6 7. Bg5 0-0 8. 0-0-0 Re8 9. Qd2 Nc6 10. h3 Be6 11. d4 c4 12. g3 Qa5 13. Kb1 b5 14. a3 Rab8 15. Ne5 Rb6 16. Bxf6 Bxf6 17. f4 b4 18. Nxc6 Rxc6 19. axb4 Qxb4 20. Na2 Qb7 21. Nb4 c3 22. bxc3 a5 23. Kc1 axb4 24. cxb4 Rec8 25. b5 Rc3 26. g4 Qe7 27. Qf2 Qa3+ 28. Kd2 Rxc2+ 29. Ke1 Rxf2 30. Kxf2 Rc2+ 0-1

[Event "GER Seniors Derby 08th"]
[Site "Wesel Undeloh"]
[Date "2009.04.16"]
[Round "2.21"]
[White "Nyffeler, Hanspeter"]
[Black "Mack, Friedemann"]
[Result "1-0"]
[ECO "D07"]
[WhiteElo "1637"]
[BlackElo "1300"]
[PlyCount "65"]
[EventDate "2009.04.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nc6 3. e3 Nf6 4. c4 b6 5. Nc3 e6 6. Bd2 a6 7. cxd5 Nxd5 8. Rc1 Bb7 9. Be2 Bd6 10. 0-0 0-0 11. a3 Nce7 12. Ne4 Ng6 13. Nxd6 cxd6 14. Ne1 b5 15. Nd3 Qd7 16. Re1 Rac8 17. Rxc8 Rxc8 18. Nb4 Nf6 19. Bf3 Ne4 20. Bxe4 Bxe4 21. Nxa6 Qb7 22. f3 Bxf3 23. Qxf3 Qxf3 24. gxf3 Nh4 25. Kf2 Rc2 26. Re2 Rxb2 27. Bb4 Rxe2+ 28. Kxe2 d5 29. Nc7 g5 30. Nxb5 Ng6 31. a4 f5 32. a5 Nf8 33. Bxf8 1-0

