[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2018.12.30"]
[Round "7"]
[White "Hansch, Karsten"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2286"]
[BlackElo "2087"]
[PlyCount "39"]
[EventDate "2018.12.27"]
[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. Nc3 e6 3. g3 a6 4. Bg2 b5 5. d3 Bb7 6. Nh3 Nf6 7. 0-0 b4 8. Ne2 d5 9. e5 Ng4 10. f4 h5 11. f5 exf5 12. Nef4 g6 13. e6 Bg7 14. Qe2 Qf6 15. exf7+ Kd7 16. Ng5 Nc6 17. Nxd5 Qd4+ 18. Kh1 Rae8 19. fxe8Q+ Rxe8 20. Nb6+ 1-0

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2018.12.29"]
[Round "6"]
[White "Piotrowski, Christopher"]
[Black "Tiarks, Jann Christian"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "2087"]
[BlackElo "2237"]
[PlyCount "31"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.28"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nc3 e5 6. d3 Nge7 7. 0-0 0-0 8. Ne1 d6 9. Nc2 Be6 10. Ne3 Qd7 11. Ned5 Bh3 12. Bh6 Bxg2 13. Kxg2 Nxd5 14. Nxd5 Ne7 15. Nxe7+ Qxe7 16. Bxg7 1/2-1/2

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2018.12.29"]
[Round "5"]
[White "Zimermann, Felix"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "D93"]
[BlackElo "2087"]
[PlyCount "51"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.28"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Bf4 0-0 6. e3 dxc4 7. Bxc4 c5 8. h3 Nc6 9. 0-0 Nh5 10. Be5 cxd4 11. Bxg7 Nxg7 12. Nxd4 Nxd4 13. Qxd4 Qxd4 14. exd4 Rd8 15. Rad1 Nf5 16. d5 Nd6 17. Bb3 Bd7 18. Rfe1 Kf8 19. Ne4 Bf5 20. Nxd6 exd6 21. g4 Bd7 22. Kg2 Re8 23. Rxe8+ Rxe8 24. Rc1 Rc8 25. Rxc8+ Bxc8 26. g5 1/2-1/2

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2018.12.28"]
[Round "3"]
[White "Ahmadinia, Ebrahim"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2439"]
[BlackElo "2087"]
[PlyCount "99"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.28"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Nf3 e6 6. d3 Nge7 7. Bg5 b6 8. Qc1 Bb7 9. 0-0 0-0 10. Rd1 Rc8 11. Rb1 d5 12. a3 d4 13. Na4 Qd7 14. b4 cxb4 15. axb4 Nf5 16. Qa3 h6 17. Bd2 Ne5 18. b5 Nxf3+ 19. exf3 e5 20. c5 Bd5 21. cxb6 Qb7 22. Nc5 Rxc5 23. Qxc5 axb6 24. Qc2 Rc8 25. Qb2 Bxf3 26. Bxf3 Qxf3 27. Rbc1 Kh7 28. Qb3 Rxc1 29. Rxc1 h5 30. Qxf7 Nh4 31. Qxf3 Nxf3+ 32. Kf1 Nxd2+ 33. Ke2 Nb3 34. Rc6 Bh6 35. Rxb6 Nc1+ 36. Kf3 Nxd3 37. Rc6 Nb4 38. Rc7+ Bg7 39. b6 Na6 40. Ke4 Kg8 41. b7 Bf8 42. Rc8 Kf7 43. Kxe5 d3 44. b8Q Nxb8 45. Rxb8 d2 46. Rd8 Bb4 47. Rd7+ Ke8 48. Ke6 Bc3 49. f4 Kf8 50. h3 1-0

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2018.12.28"]
[Round "4"]
[White "Piotrowski, Christopher"]
[Black "Kreutz, Jonas"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2087"]
[BlackElo "1921"]
[PlyCount "69"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.28"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. 0-0 0-0 6. b3 b6 7. Bb2 Bb7 8. e3 Nbd7 9. Nc3 Nc5 10. d4 Nce4 11. Nxe4 Nxe4 12. cxd5 Bxd5 13. Qe2 Ng5 14. Nd2 Bxg2 15. Kxg2 h6 16. Rfd1 Bf6 17. Rac1 Qe7 18. h4 Nh7 19. Rc6 Qd7 20. Rdc1 Bd8 21. Nf3 Nf6 22. Ne5 Qe7 23. Qa6 Nd5 24. Qb7 Qb4 25. Nc4 Be7 26. Qa6 b5 27. Ba3 Rfb8 28. Rxe6 bxc4 29. Bxb4 Nxb4 30. Qxc4 fxe6 31. Qxe6+ Kf8 32. Rxc7 Re8 33. a3 Na2 34. Qf5+ Kg8 35. Rxe7 1-0

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2018.12.27"]
[Round "2"]
[White "Piotrowski, Christopher"]
[Black "Fuchs, Raimond"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2087"]
[BlackElo "1887"]
[PlyCount "37"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.28"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.28"]
[SourceQuality "1"]

1. c4 g6 2. g3 Bg7 3. Nc3 Nf6 4. Bg2 d6 5. e4 e5 6. Nge2 Nc6 7. d3 0-0 8. 0-0 Be6 9. Nd5 Nd4 10. Nxd4 exd4 11. f4 Qd7 12. Nxf6+ Bxf6 13. f5 gxf5 14. exf5 Bxf5 15. Qf3 Bxd3 16. Qxd3 Bg7 17. Bxb7 Rab8 18. Be4 Qh3 19. Rf4 1-0

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2017.12.29"]
[Round "6"]
[White "Koetz, Andreas"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "1928"]
[BlackElo "2110"]
[PlyCount "42"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. d3 0-0 9. Be3 Be6 10. Rc1 f6 11. Ne4 Nd4 12. Bxd4 exd4 13. e3 dxe3 14. fxe3 Bf7 15. Nd4 g6 16. Nc5 Bxc5 17. Rxc5 Qe7 18. Qc1 c6 19. Rc2 Rad8 20. a3 Rfe8 21. Re1 Rxd4 0-1

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2017.12.29"]
[Round "5"]
[White "Piotrowski, Christopher"]
[Black "Bielick, Jakob"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2110"]
[BlackElo "1787"]
[PlyCount "83"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Bf4 Nc6 8. Qd2 Be6 9. Ng5 Bxg5 10. Bxg5 f6 11. Bf4 Qd7 12. Bb5 a6 13. Be2 0-0-0 14. 0-0 g5 15. Be3 d5 16. Bd4 Qe7 17. Rae1 Rhf8 18. b4 Nxd4 19. Qxd4 Qd6 20. Bh5 Bf7 21. Bg4+ Kb8 22. Re3 h5 23. Bf5 Rde8 24. Rxe8+ Rxe8 25. f4 g4 26. Bd3 h4 27. f5 h3 28. g3 Bh5 29. Qf2 Qe5 30. Qd2 d4 31. c4 Re7 32. Qf4 Be8 33. Qxe5 fxe5 34. f6 Rf7 35. Be4 c6 36. Bg6 Rf8 37. f7 Bd7 38. Re1 Be6 39. Rxe5 Bxf7 40. Rf5 Re8 41. Rxf7 Re1+ 42. Rf1 1-0

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2017.12.28"]
[Round "3"]
[White "Piotrowski, Christopher"]
[Black "Malek, Daniel"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "2110"]
[BlackElo "2405"]
[PlyCount "88"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Ngf3 Nf6 5. e5 Nfd7 6. Bd3 c5 7. c3 b6 8. a3 a5 9. c4 Ba6 10. Qc2 Nc6 11. cxd5 Bxd3 12. Qxd3 exd5 13. dxc5 Nxc5 14. Qe2 0-0 15. b3 d4 16. 0-0 d3 17. Qe3 b5 18. Bb2 Qd5 19. Rac1 Rac8 20. Rc3 b4 21. axb4 axb4 22. Rc4 Nxb3 23. Rg4 Nxd2 24. Nxd2 f5 25. Rc4 Ra8 26. Rfc1 Ra2 27. Rxc6 Rxb2 28. Rc7 Bd8 29. Ra7 f4 30. Qe1 Bb6 31. Raa1 Qd4 32. Rab1 Rc2 33. Rd1 Re8 34. Nf3 Qxf2+ 35. Qxf2 Bxf2+ 36. Kf1 Rd8 37. Rxb4 Be3 38. e6 Rf2+ 39. Ke1 d2+ 40. Rxd2 Bxd2+ 41. Nxd2 Rfxd2 42. e7 Rd1+ 43. Ke2 R8d2+ 44. Kf3 Re1 0-1

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2017.12.28"]
[Round "4"]
[White "Vinck, Arne"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1803"]
[BlackElo "2110"]
[PlyCount "43"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. Nge2 e6 6. 0-0 Nf6 7. e5 Bxg2 8. Kxg2 Ng4 9. f4 d5 10. d4 Nc6 11. h3 Nh6 12. g4 cxd4 13. Nxd4 Nxd4 14. Qxd4 Rc8 15. f5 Ng8 16. fxe6 fxe6 17. Qf2 Qe7 18. Bg5 Nf6 19. exf6 Qb7 20. Rae1 d4+ 21. Ne4 h5 22. h4 1-0

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2017.12.27"]
[Round "2"]
[White "Andersen, Guttorm"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "D29"]
[WhiteElo "1845"]
[BlackElo "2110"]
[PlyCount "70"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. Nf3 a6 6. 0-0 c5 7. Qe2 b5 8. Bb3 Bb7 9. a4 b4 10. Rd1 Nbd7 11. a5 Qc7 12. Ba4 Bd6 13. Nbd2 0-0 14. h3 cxd4 15. Nxd4 Nc5 16. Nc4 Bh2+ 17. Kf1 Nce4 18. Bc2 Bg3 19. f3 Nf2 20. Bd2 Nxd1 21. Rxd1 Nd5 22. Qd3 g6 23. Ne2 Bh2 24. Be1 Rad8 25. Qb3 Qxc4 26. Rd3 Qxb3 27. Rxb3 Rc8 28. Bb1 Bc6 29. g3 Ba4 30. Rd3 Bb5 31. Kf2 Bxd3 32. Bxd3 Rfd8 33. Bb1 Nxe3 34. Bxb4 Nf5 35. Bc3 Rxc3 0-1

[Event "Berlin Spandau op"]
[Site "Berlin"]
[Date "2017.12.27"]
[Round "1"]
[White "Piotrowski, Christopher"]
[Black "Francois, Yannick"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2110"]
[BlackElo "1638"]
[PlyCount "43"]
[EventDate "2017.12.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bc5 5. Nf3 d6 6. 0-0 0-0 7. d3 Be6 8. e3 Qc8 9. d4 exd4 10. exd4 Bxc4 11. dxc5 Bxf1 12. Qxf1 dxc5 13. Bh3 Qd8 14. Qc4 Qe7 15. Bg5 Rfe8 16. Nd5 Qd6 17. Bxf6 gxf6 18. Qg4+ Kf8 19. Qh5 Ne5 20. Qh6+ Kg8 21. Nxf6+ Kh8 22. Qxh7# 1-0

[Event "Berlin Lichtenrade op 13th"]
[Site "Berlin"]
[Date "2017.11.05"]
[Round "9"]
[White "Vogel, Constantin"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "A29"]
[WhiteElo "1963"]
[BlackElo "2110"]
[PlyCount "94"]
[EventDate "2017.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. a3 0-0 9. b4 Be6 10. d3 Nd4 11. Bb2 Bb3 12. Qd2 Nc4 13. Qc1 Nxf3+ 14. Bxf3 Bg5 15. e3 Qxd3 16. Be2 Qf5 17. Nb5 Qe4 18. Nc3 Qc6 19. b5 Qe6 20. Ne4 Be7 21. Qc3 Nxb2 22. Qxb2 Bd5 23. Nc3 Bc4 24. Bxc4 Qxc4 25. e4 Bc5 26. Rac1 Bd4 27. Ne2 Bxb2 28. Rxc4 c6 29. bxc6 bxc6 30. a4 Rac8 31. Rb1 Ba3 32. Rb3 Bd6 33. Rb7 Bb8 34. Nc1 f6 35. Nb3 Rf7 36. Rcb4 Bd6 37. Rxf7 Kxf7 38. Rb7+ Rc7 39. Rxc7+ Bxc7 40. Kf1 Bb6 41. Ke2 Ke6 42. f3 f5 43. Kd3 g6 44. Nd2 h5 45. h3 Bf2 46. g4 fxg4 47. fxg4 hxg4 1/2-1/2

[Event "Berlin Lichtenrade op 13th"]
[Site "Berlin"]
[Date "2017.11.04"]
[Round "8"]
[White "Piotrowski, Christopher"]
[Black "Bauder, Herbert"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2110"]
[BlackElo "1925"]
[PlyCount "77"]
[EventDate "2017.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nf3 Nc6 5. Nc3 e5 6. d3 Nge7 7. 0-0 0-0 8. Ne1 d6 9. Nc2 a5 10. Ne3 h6 11. Bd2 f5 12. Ned5 Kh7 13. e3 Nxd5 14. Nxd5 Ne7 15. Bc3 Rb8 16. Nxe7 Qxe7 17. Bxa5 b5 18. cxb5 Rxb5 19. Bc3 Be6 20. f4 Qa7 21. Qd2 Qc7 22. fxe5 dxe5 23. a4 Rb3 24. a5 c4 25. dxc4 Bxc4 26. Rfd1 e4 27. Bd4 Bxd4 28. Qxd4 Bd3 29. a6 Rc8 30. a7 Ra8 31. Qd5 Rxb2 32. Qxa8 Qc2 33. Qh8+ Kxh8 34. a8Q+ Kg7 35. Ra7+ Kf6 36. Qd8+ Ke5 37. Re7+ Kf6 38. Re8+ Kf7 39. Qe7# 1-0

[Event "Berlin Lichtenrade op 13th"]
[Site "Berlin"]
[Date "2017.11.03"]
[Round "7"]
[White "Silz, Elisa"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "E16"]
[WhiteElo "1970"]
[BlackElo "2110"]
[PlyCount "56"]
[EventDate "2017.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 c5 7. 0-0 0-0 8. Nc3 Nc6 9. a3 Bxc3 10. Bxc3 Ne4 11. Qc2 Nxc3 12. Qxc3 Qf6 13. Rfd1 d6 14. Rac1 Rad8 15. b4 e5 16. e3 e4 17. Ne1 Rfe8 18. d5 Qxc3 19. Rxc3 Nb8 20. b5 Nd7 21. Nc2 f5 22. Ne1 g5 23. f4 h6 24. Bf1 Nf6 25. Be2 Kf7 26. Ng2 Rg8 27. Kf2 Ra8 28. Rb1 Ke7 1/2-1/2

[Event "Berlin Lichtenrade op 13th"]
[Site "Berlin"]
[Date "2017.11.02"]
[Round "6"]
[White "Piotrowski, Christopher"]
[Black "Turbin, Yaroslav"]
[Result "0-1"]
[ECO "A12"]
[WhiteElo "2110"]
[BlackElo "1986"]
[PlyCount "63"]
[EventDate "2017.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5 5. Bg2 e6 6. 0-0 Bd6 7. Bb2 Nbd7 8. d3 Qe7 9. cxd5 cxd5 10. Nd4 Bg4 11. h3 Bh5 12. Nb5 Bb8 13. Ba3 Qd8 14. Nd6+ Bxd6 15. Bxd6 Qb6 16. Ba3 Rc8 17. Nd2 Qa5 18. Rc1 Rc6 19. Nb1 Nb8 20. g4 Bg6 21. e4 dxe4 22. dxe4 Bxe4 23. Bxe4 Nxe4 24. Qd4 Nf6 25. Rfd1 Rxc1 26. Rxc1 Nc6 27. Qb2 h5 28. b4 Qd5 29. b5 hxg4 30. Nc3 Qf3 31. Ne2 gxh3 32. Kf1 0-1

[Event "Berlin Lichtenrade op 13th"]
[Site "Berlin"]
[Date "2017.11.01"]
[Round "5"]
[White "Schmidt, Juergen"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "1948"]
[BlackElo "2110"]
[PlyCount "84"]
[EventDate "2017.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. 0-0 b5 8. a3 Bb7 9. Re1 Bd6 10. h3 Bc5 11. Be3 d6 12. Nf3 Nbd7 13. Bxc5 Qxc5 14. Qd2 Ne5 15. Nxe5 dxe5 16. Qe3 Qxe3 17. Rxe3 0-0-0 18. b4 Rd4 19. f3 Rhd8 20. Ree1 Ne8 21. Reb1 Bc6 22. a4 Nc7 23. axb5 axb5 24. Ra5 Kb8 25. Bxb5 Nxb5 26. Nxb5 Rd2 27. Na3 Re2 28. Kh1 f5 29. Rc5 Bb7 30. exf5 e4 31. fxe6 exf3 32. Nc4 f2 33. Rf1 Rd1 34. Rxd1 Re1+ 35. Kh2 f1Q 36. Rd8+ Ka7 37. Ra5+ Ba6 38. Rd7+ Kb8 39. Rd8+ Kc7 40. Rd7+ Kb8 41. Rd8+ Bc8 42. Rf5 Qxc4 0-1

[Event "Berlin Lichtenrade op 13th"]
[Site "Berlin"]
[Date "2017.10.31"]
[Round "4"]
[White "Piotrowski, Christopher"]
[Black "Riering, Berthold"]
[Result "1/2-1/2"]
[ECO "A29"]
[WhiteElo "2110"]
[BlackElo "1977"]
[PlyCount "63"]
[EventDate "2017.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. a3 0-0 9. b4 Be6 10. Rb1 f6 11. d3 a5 12. b5 Nd4 13. Nd2 Qc8 14. e3 Nf5 15. Nf3 Rd8 16. Qc2 a4 17. Ne4 Qd7 18. d4 exd4 19. Nxd4 Nxd4 20. exd4 Bb3 21. Rxb3 axb3 22. Qxb3+ Kh8 23. Nc5 Qxd4 24. Ne6 Qc4 25. Qxc4 Nxc4 26. Nxd8 Rxd8 27. a4 b6 28. Bf4 Ne5 29. Rc1 Bd6 30. Be4 g5 31. Bxe5 Bxe5 32. Rc4 1/2-1/2

[Event "Berlin Lichtenrade op 13th"]
[Site "Berlin"]
[Date "2017.10.30"]
[Round "3"]
[White "Piotrowski, Christopher"]
[Black "Verbitzky, Jaroslaw"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2110"]
[BlackElo "1739"]
[PlyCount "41"]
[EventDate "2017.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. c4 c6 2. g3 d5 3. Nf3 Nf6 4. Bg2 e6 5. b3 g6 6. 0-0 Bg7 7. Ba3 Ne4 8. d4 Nd6 9. Nc3 0-0 10. Re1 Re8 11. e4 dxe4 12. Nxe4 Nxe4 13. Rxe4 b6 14. Qe2 Bb7 15. Rd1 Nd7 16. Re3 Qc7 17. Ng5 Nf6 18. Bh3 Bc8 19. d5 cxd5 20. cxd5 e5 21. d6 1-0

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.27"]
[Round "9"]
[White "Daoud, Marcel"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "1928"]
[BlackElo "2117"]
[PlyCount "79"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nf6 6. Be2 e5 7. Nb3 Be6 8. a4 d5 9. exd5 Nxd5 10. Bf3 Bb4 11. 0-0 Nxc3 12. Qxd8+ Kxd8 13. Bd2 Nc6 14. bxc3 Be7 15. Be3 Kc7 16. a5 Rac8 17. Nc5 Bf5 18. Rfd1 Rhd8 19. Rdb1 Bxc5 20. Bxc5 Rd2 21. Rd1 Rxd1+ 22. Rxd1 e4 23. Bb6+ Kb8 24. Be2 Be6 25. f3 exf3 26. Bxf3 Ne5 27. Be2 Bc4 28. Bf3 Bb5 29. Bd5 Nd7 30. Bd4 f6 31. Be6 Kc7 32. Bb6+ Nxb6 33. axb6+ Kb8 34. Bxc8 Kxc8 35. Rd4 a5 36. Rd5 Ba4 37. Rxa5 Bxc2 38. Rc5+ Kd8 39. Rc7 Be4 40. Rxg7 1-0

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.26"]
[Round "8"]
[White "Piotrowski, Christopher"]
[Black "Colpe, Malte"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2117"]
[BlackElo "2424"]
[PlyCount "78"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. b3 d4 6. Bb2 c5 7. b4 0-0 8. 0-0 a5 9. bxc5 Nc6 10. e3 e5 11. exd4 exd4 12. d3 Bxc5 13. Na3 Re8 14. Nb5 Bf5 15. h3 h6 16. Bc1 Nb4 17. Ne1 Qd7 18. g4 Rxe1 19. Rxe1 Bxd3 20. Re5 Bxc4 21. Rxc5 Bxb5 22. Bb2 Nd3 23. Rxb5 Qxb5 24. Bxd4 Nf4 25. Rb1 Qg5 26. Be3 Qe5 27. Rxb7 Rc8 28. Qb3 N6d5 29. Bxd5 Nxd5 30. Rd7 Qa1+ 31. Kg2 Nxe3+ 32. fxe3 Qf6 33. Rd5 Rc1 34. Rf5 Qc6+ 35. Kg3 Rg1+ 36. Kf4 Rf1+ 37. Ke5 Qc7+ 38. Ke4 Rc1 39. Qb5 Qc2+ 0-1

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.25"]
[Round "7"]
[White "Moeller, Dustin"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2081"]
[BlackElo "2117"]
[PlyCount "121"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nbd2 Bf5 5. Nh4 Be6 6. e3 g6 7. Bd3 Bg7 8. 0-0 0-0 9. b3 c5 10. Bb2 cxd4 11. exd4 Nc6 12. Nhf3 Qb6 13. c5 Qc7 14. a3 Bf5 15. Bxf5 gxf5 16. b4 Ne4 17. Nb3 b5 18. cxb6 axb6 19. Rc1 Qd6 20. Qd3 Rac8 21. Rc2 e6 22. Rfc1 Ne7 23. Qb5 Rxc2 24. Rxc2 Qd8 25. Ne5 Nd6 26. Qd3 Bxe5 27. dxe5 Nc4 28. Bc1 Ng6 29. f4 Qh4 30. Rf2 Ra8 31. Nd4 Rc8 32. Rf1 Qe7 33. Kh1 Qa7 34. g4 fxg4 35. Rg1 h5 36. Nxe6 d4 37. Qe4 Qa8 38. Qxa8 Rxa8 39. Nxd4 Nxa3 40. h3 Rd8 41. hxg4 hxg4 42. Nf5 Nc2 43. Nh6+ Kg7 44. Nxg4 Nxb4 45. f5 Rh8+ 46. Nh2 Nd3 47. fxg6 Nxe5 48. Bb2 f6 49. Bxe5 fxe5 50. Rc1 Kxg6 51. Rc6+ Kf5 52. Rxb6 Kf4 53. Kg2 Rg8+ 54. Kf2 e4 55. Nf1 Ra8 56. Rb2 Ra3 57. Ke2 Rh3 58. Rb4 Rh5 59. Rxe4+ Kxe4 60. Ng3+ Kd5 61. Nxh5 1/2-1/2

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.24"]
[Round "6"]
[White "Piotrowski, Christopher"]
[Black "Meyer Dunker, Paul"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2117"]
[BlackElo "1965"]
[PlyCount "51"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 dxc4 5. Na3 Qd5 6. Qc2 Nc6 7. 0-0 Na5 8. b4 Bxb4 9. Qa4+ Nc6 10. Nh4 Qc5 11. Bxc6+ bxc6 12. Nc2 Ba5 13. Rb1 Nd5 14. Ne3 Nxe3 15. fxe3 Ba6 16. Ba3 Qd5 17. Nf3 f6 18. e4 Bb6+ 19. Rxb6 Bb5 20. Qb4 Qd7 21. Ne5 Qd6 22. Rxb5 cxb5 23. Qxb5+ c6 24. Qb7 Qxa3 25. Qf7+ Kd8 26. Qd7# 1-0

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.23"]
[Round "5"]
[White "Barath, Madhan"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2285"]
[BlackElo "2117"]
[PlyCount "49"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 a6 6. Qb3 Ra7 7. Bd2 e6 8. Nh4 Be4 9. f3 dxc4 10. Bxc4 Bd5 11. g3 g5 12. Ng2 Bxf3 13. 0-0 Bxg2 14. Kxg2 b5 15. Bxe6 fxe6 16. Qxe6+ Re7 17. Qxf6 Rg8 18. Rf5 Nd7 19. Qxc6 Rg6 20. Qf3 Bg7 21. Nd5 g4 22. Qf4 Qa8 23. e4 Nc5 24. dxc5 Bh6 25. Qf2 1-0

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.22"]
[Round "4"]
[White "Piotrowski, Christopher"]
[Black "Seitz, Patrick"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2117"]
[BlackElo "1956"]
[PlyCount "47"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Nf3 b6 6. d3 Bb7 7. Bg5 h6 8. Bf4 g5 9. Bc1 e6 10. h4 g4 11. Nh2 h5 12. 0-0 Bh6 13. d4 cxd4 14. Nb5 Qb8 15. e3 a6 16. Bxc6 dxc6 17. Qxd4 cxb5 18. Qxh8 Ke7 19. e4 Bxc1 20. Raxc1 Qd6 21. Qxh5 Qc6 22. Qg5+ Kf8 23. Nxg4 Qxe4 24. Qxg8+ 1-0

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.21"]
[Round "3"]
[White "Albrecht, Rainer"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2047"]
[BlackElo "2117"]
[PlyCount "88"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Nd2 e6 6. Ngf3 Be7 7. Ne5 Nxe5 8. Bxe5 Qb6 9. Rb1 Bd7 10. dxc5 Qxc5 11. Bd3 Bb5 12. Bd4 Qc6 13. Qe2 a6 14. 0-0 Rc8 15. Rfe1 0-0 16. e4 dxe4 17. Bxb5 Qxb5 18. Qxb5 axb5 19. Nxe4 Nd5 20. a3 Rc6 21. f3 Nf4 22. Nd2 Nd3 23. Re2 f6 24. Kf1 Rd8 25. Nb3 b6 26. Bg1 Bc5 27. Bxc5 bxc5 28. Rd1 Rcd6 29. Red2 c4 30. Nc1 e5 31. Nxd3 cxd3 32. Kf2 f5 33. Ke3 e4 34. fxe4 fxe4 35. Kxe4 Re8+ 36. Kf3 Rf6+ 37. Kg3 Rg6+ 38. Kh3 Rh6+ 39. Kg3 Rg6+ 40. Kf2 Rge6 41. Kf1 Re2 42. Rxd3 Rxb2 43. Rd8 Kf8 44. Rxe8+ Kxe8 1/2-1/2

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.20"]
[Round "2"]
[White "Piotrowski, Christopher"]
[Black "Lichii, Elizaveta"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2117"]
[BlackElo "1862"]
[PlyCount "103"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c5 3. Bg2 Nc6 4. Nc3 g6 5. Nf3 Bg7 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 Nxd4 9. Qxd4 d6 10. b3 Nd7 11. Qe3 Ne5 12. Bd2 Nc6 13. Rad1 Bd7 14. Ne4 Qc8 15. Bc3 Bxc3 16. Nxc3 Bh3 17. Qh6 Bxg2 18. Kxg2 Qe6 19. Nd5 Qe5 20. Rd3 Qg7 21. Qh4 g5 22. Qh3 e6 23. Ne3 Rad8 24. Rfd1 Nb4 25. R3d2 f5 26. a3 Nc6 27. Rxd6 Rxd6 28. Rxd6 Qe7 29. c5 Ne5 30. Qh6 Ng6 31. Nc4 Rc8 32. b4 b6 33. c6 Rc7 34. b5 g4 35. Qd2 Kf7 36. Rd7 Rxd7 37. cxd7 Qd8 38. Qd6 Kf6 39. Qd4+ Kf7 40. Qd6 Kf6 41. f4 Kf7 42. Kf2 Kf6 43. Ke3 h5 44. Kd4 Kf7 45. e4 fxe4 46. Kxe4 Qa8+ 47. Qc6 Qxc6+ 48. bxc6 Ke7 49. f5 exf5+ 50. Kxf5 Nf8 51. Ne5 Ne6 52. d8Q+ 1-0

[Event "Berlin Lichtenberger op 16th"]
[Site "Berlin"]
[Date "2017.08.19"]
[Round "1"]
[White "Bender, Sebastian1"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1876"]
[BlackElo "2117"]
[PlyCount "120"]
[EventDate "2017.08.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 180 Extra"]
[Source "ChessBase"]
[SourceDate "2017.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.06"]
[SourceQuality "1"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. d4 Nc6 5. Nc3 Nf6 6. Bg5 dxc4 7. Bxc4 h6 8. Bxf6 exf6 9. Nge2 Bd6 10. 0-0 0-0 11. Qd3 f5 12. f4 a6 13. Qh3 Bd7 14. Kh1 b5 15. Bd3 b4 16. Nd5 Ne7 17. Nxe7+ Qxe7 18. Rae1 Qf6 19. Ng3 g6 20. Qxh6 Rfe8 21. Qg5 Qxg5 22. fxg5 Kg7 23. Rxe8 Rxe8 24. Bxa6 Rh8 25. Kg1 Rh4 26. Rd1 Bf4 27. Nf1 Bxg5 28. g3 Re4 29. Kf2 Bf6 30. d5 Bd4+ 31. Kf3 Bxb2 32. Bd3 Rd4 33. Bc2 Kf6 34. Rxd4 Bxd4 35. Ne3 Ke5 36. Bb3 Bxe3 37. Kxe3 Bb5 38. Kf3 f6 39. h4 Bd3 40. Ke3 Be4 41. d6 Kxd6 42. Bf7 Bd5 43. Bxg6 Bxa2 44. Bxf5 b3 45. g4 Ke5 46. Bd3 b2 47. g5 f5 48. g6 f4+ 49. Kf3 b1Q 50. Bxb1 Bxb1 51. g7 Be4+ 52. Kg4 Bf5+ 53. Kf3 Be6 54. h5 Kf5 55. h6 Bg8 56. Kf2 Kg4 57. Kg2 f3+ 58. Kf2 Kf4 59. Kf1 Kg3 60. Kg1 f2+ 0-1

[Event "Berlin Lichtenrade op 11th"]
[Site "Berlin"]
[Date "2015.10.31"]
[Round "8"]
[White "Piotrowski, Christopher"]
[Black "Steponavicius, Stasys"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2104"]
[BlackElo "2194"]
[PlyCount "36"]
[EventDate "2015.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 169 Extra"]
[Source "ChessBase"]
[SourceDate "2015.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.12.18"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. a3 Be6 9. b4 0-0 10. Rb1 f6 11. d3 Nd4 12. Nd2 c6 13. Bb2 a5 14. b5 Nxb5 15. Nxb5 cxb5 16. Bxb7 Rb8 17. Bg2 Na4 18. Bc6 Qb6 0-1

[Event "Berlin Lichtenrade op 11th"]
[Site "Berlin"]
[Date "2015.10.30"]
[Round "7"]
[White "Foerster, Jonas"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2261"]
[BlackElo "2104"]
[PlyCount "56"]
[EventDate "2015.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 169 Extra"]
[Source "ChessBase"]
[SourceDate "2015.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.12.18"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8. Bb5+ Nd7 9. 0-0 0-0 10. Bg5 Nf6 11. Re1 cxd4 12. cxd4 Bg4 13. Rc1 Rc8 14. Rxc8 Qxc8 15. h3 a6 16. Ba4 Bxf3 17. Qxf3 Qc4 18. Bb3 Qxd4 19. e5 Qb4 20. Re2 Ne8 21. a3 Qc5 22. Qxb7 Bxe5 23. Qxe7 Bd6 24. Qe3 Qxe3 25. Bxe3 Nc7 26. a4 Rb8 27. Bc2 Ne6 28. g3 Bc5 1/2-1/2

[Event "Berlin Lichtenrade op 11th"]
[Site "Berlin"]
[Date "2015.10.27"]
[Round "4"]
[White "Piotrowski, Christopher"]
[Black "Solys, Laimutis"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "2104"]
[BlackElo "2344"]
[PlyCount "84"]
[EventDate "2015.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 169 Extra"]
[Source "ChessBase"]
[SourceDate "2015.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.12.18"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 c5 5. 0-0 Nc6 6. b3 Be7 7. Bb2 d4 8. e3 e5 9. exd4 cxd4 10. d3 0-0 11. Re1 Nd7 12. a3 a5 13. Nbd2 Re8 14. Qc2 Qc7 15. Nf1 Nc5 16. N3d2 Bf5 17. Ne4 Ne6 18. h3 h5 19. h4 Bg6 20. Nh2 f5 21. Nd2 e4 22. dxe4 f4 23. Ndf1 Bd6 24. gxf4 Nxf4 25. c5 Be5 26. Rad1 Rf8 27. Nf3 d3 28. Qd2 Bxb2 29. Qxb2 Rae8 30. Ng3 Qd7 31. Nh2 Ne5 32. Re3 Qe7 33. Nf3 Ng4 34. Rexd3 Nxd3 35. Rxd3 Qxc5 36. Rd5 Qc7 37. Rg5 Qf7 38. Qd4 Rd8 39. Qa1 Rd3 40. Qb2 Rxb3 41. Qc2 Rxa3 42. Nd4 Ra2 0-1

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.25"]
[Round "9"]
[White "Vogel, Robert"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "D90"]
[WhiteElo "2256"]
[BlackElo "2052"]
[PlyCount "62"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. cxd5 Nxd5 6. Bg5 Nxc3 7. bxc3 c5 8. Qd2 Qa5 9. e3 Nc6 10. Rc1 0-0 11. Be2 Bf5 12. 0-0 h6 13. Bh4 g5 14. Bg3 Rad8 15. Qb2 cxd4 16. cxd4 Be4 17. h4 g4 18. Nd2 Nxd4 19. exd4 Bxd4 20. Nb3 Bxb2 21. Nxa5 Bxc1 22. Rxc1 Rc8 23. Re1 Bd5 24. Bxg4 f5 25. Bh3 Bxa2 26. Nxb7 Bd5 27. Na5 Rc5 28. Rxe7 f4 29. Rxa7 fxg3 30. fxg3 Rf6 31. Bg4 Rc1+ 0-1

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.24"]
[Round "8"]
[White "Piotrowski, Christopher"]
[Black "Boetzer, Detlef"]
[Result "1-0"]
[ECO "A33"]
[WhiteElo "2052"]
[BlackElo "2275"]
[PlyCount "77"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nf6 3. Bg2 Nc6 4. Nf3 e6 5. 0-0 Be7 6. d4 cxd4 7. Nxd4 0-0 8. Nc3 Ne5 9. b3 Re8 10. Bb2 a6 11. Qd2 d6 12. f4 Ng6 13. f5 Nf8 14. fxe6 fxe6 15. Rad1 Qb6 16. Kh1 h6 17. Na4 Qa7 18. Nc2 e5 19. Nc3 Rb8 20. Nd5 Nxd5 21. Bxd5+ Be6 22. Bxe6+ Nxe6 23. Qd5 Bf8 24. Ba3 Rbd8 25. Rf3 b6 26. e4 Kh8 27. Rdf1 Ng5 28. Rd3 Qa8 29. Qxa8 Rxa8 30. Re1 Red8 31. h4 Nf7 32. Rd5 g6 33. Bb4 Kg7 34. a4 Rdc8 35. Re2 a5 36. Be1 Kf6 37. Bf2 Rc6 38. Rb5 Rb8 39. Ne3 1-0

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.23"]
[Round "7"]
[White "Lorenz, Sascha"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "D95"]
[WhiteElo "2283"]
[BlackElo "2052"]
[PlyCount "82"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Qb3 dxc4 6. Bxc4 0-0 7. Nf3 c5 8. dxc5 Nbd7 9. Qa3 Qc7 10. b4 Ne5 11. Nxe5 Qxe5 12. Bb2 Qg5 13. g3 Rd8 14. Qb3 Bh3 15. Bxf7+ Kh8 16. Ne2 Ne4 17. Nf4 Nd2 18. Bxg7+ Kxg7 19. Qb2+ Kxf7 20. 0-0-0 Bg4 21. Rxd2 e5 22. Qb3+ Ke7 23. Nd5+ Kf8 24. e4 a5 25. f4 Qh6 26. b5 Qg7 27. f5 gxf5 28. exf5 Rac8 29. Qc4 Bf3 30. Rf1 e4 31. f6 Qg5 32. Nf4 Re8 33. Rd5 Qxf6 34. Kb1 Re5 35. Qd4 Rce8 36. Rd7 Qf5 37. Kb2 b6 38. a4 bxc5 39. Qd6+ Kg8 40. Nd5 R5e6 41. Qxc5 Rh6 1-0

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.22"]
[Round "6"]
[White "Piotrowski, Christopher"]
[Black "Gaerths, Ronny"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2052"]
[BlackElo "2221"]
[PlyCount "106"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 g6 5. b3 Bg7 6. Bb2 0-0 7. 0-0 Bg4 8. d3 Bxf3 9. Bxf3 e6 10. Nd2 Nbd7 11. Rc1 Qb6 12. Qc2 a5 13. cxd5 Nxd5 14. a3 Bxb2 15. Qxb2 h5 16. h4 Qd8 17. b4 axb4 18. axb4 Nc7 19. Nc4 Nb5 20. Na5 Rb8 21. Ra1 Qe7 22. Rfc1 e5 23. Qd2 Kh7 24. Bg2 Nf6 25. Qg5 Kg7 26. Rc5 Rfe8 27. Bxc6 bxc6 28. Nxc6 Qd6 29. Nxb8 Qxb8 30. Qd2 Nd4 31. Qb2 Qd6 32. Ra7 Re7 33. Rxe7 Qxe7 34. f4 Ne6 35. Rxe5 Kh7 36. Ra5 Ng4 37. Ra8 Ng7 38. e4 Qb7 39. Ra1 Ne6 40. Qd2 Qb6+ 41. Kh1 Nf2+ 42. Kg2 Qd4 43. Qxf2 Qxa1 44. f5 Ng7 45. b5 Qb1 46. b6 gxf5 47. exf5 Qb5 48. Qf3 Qxb6 49. f6 Qb2+ 50. Kh3 Ne6 51. Qxh5+ Kg8 52. Qg4+ Kf8 53. Qf3 Qa1 1/2-1/2

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.21"]
[Round "5"]
[White "Rohde, Wolfgang"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "2171"]
[BlackElo "2052"]
[PlyCount "70"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nbd2 c5 4. dxc5 Na6 5. Nb3 Nxc5 6. Qd4 Nce4 7. Ng5 Nxg5 8. Bxg5 Bg7 9. 0-0-0 d6 10. f3 Be6 11. e4 h6 12. Be3 0-0 13. Qd2 Kh7 14. Kb1 d5 15. e5 Nd7 16. f4 f6 17. exf6 Nxf6 18. Bd3 Bf5 19. Bxf5 gxf5 20. Rhe1 e6 21. Qe2 Qc7 22. h3 Ne4 23. g4 Rac8 24. Bd4 fxg4 25. Bxg7 Qxg7 26. Nd4 Qg6 27. Qb5 Rc7 28. f5 exf5 29. hxg4 fxg4 30. Qxd5 Re7 31. Re2 Qf7 32. Qb5 Nf2 33. Rxe7 Qxe7 34. Nf5 a6 35. Qd5 Qf7 0-1

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.20"]
[Round "4"]
[White "Piotrowski, Christopher"]
[Black "Schneider, Christian"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2052"]
[BlackElo "2221"]
[PlyCount "84"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. 0-0 0-0 6. b3 c5 7. Bb2 Nc6 8. e3 dxc4 9. bxc4 Qc7 10. Nc3 Rd8 11. Qe2 a6 12. d4 cxd4 13. exd4 Na5 14. c5 Bd7 15. Bc1 Bc6 16. Bf4 Qc8 17. Rfd1 Nd5 18. Nxd5 Bxd5 19. Rab1 Bf6 20. Be5 Bxe5 21. Nxe5 Bxg2 22. Kxg2 Nc6 23. Nf3 Rd7 24. Qe4 Qd8 25. Rb6 Rc8 26. h4 h6 27. g4 Qf6 28. Ne5 Rd5 29. Nxc6 bxc6 30. Rxa6 Qxh4 31. Ra7 h5 32. Qf3 Qxg4+ 33. Qxg4 hxg4 34. a4 e5 35. a5 exd4 36. a6 d3 37. Rb7 Ra8 38. a7 Kh7 39. Rxf7 Kg6 40. Rc7 d2 41. Rxc6+ Kf5 42. Rd6 Rxd6 1/2-1/2

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.19"]
[Round "3"]
[White "Reichenbach, Werner"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "2279"]
[BlackElo "2052"]
[PlyCount "50"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 Bd7 7. b4 cxd4 8. cxd4 Rc8 9. Bb2 Na5 10. Nbd2 Nc4 11. Nxc4 dxc4 12. Rc1 Qa6 13. Nd2 b5 14. Ne4 Bc6 15. f3 Be7 16. Be2 f5 17. Nc3 Bh4+ 18. g3 Bg5 19. Ra1 Qb7 20. Kf2 Ne7 21. f4 Bh6 22. Bf3 0-0 23. Bc1 Nd5 24. Bxd5 Bxd5 25. Re1 Rfd8 1/2-1/2

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.18"]
[Round "2"]
[White "Piotrowski, Christopher"]
[Black "Kuckel, Andreas"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2052"]
[BlackElo "1937"]
[PlyCount "69"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 b5 7. a3 Nf6 8. Bf3 Bb7 9. 0-0 Bc5 10. Nb3 Bd6 11. g3 Nc6 12. Bg2 0-0 13. f4 e5 14. Be3 Be7 15. Qe2 b4 16. Nd5 Nxd5 17. exd5 Nd8 18. axb4 Bxb4 19. Ra4 a5 20. Rd1 exf4 21. Bxf4 Bd6 22. Bc1 Ba6 23. Qh5 Qxc2 24. Be4 g6 25. Bxc2 gxh5 26. Rh4 Rc8 27. Bxh7+ Kxh7 28. Rxh5+ Kg6 29. Rh6+ Kf5 30. Nd4+ Ke4 31. Rxd6 Bd3 32. Nb3 Be2 33. Rd4+ Kf5 34. h3 Rc4 35. g4+ 1-0

[Event "Berlin Lichtenberger op 12th"]
[Site "Berlin"]
[Date "2013.08.17"]
[Round "1"]
[White "Jansen, Robert"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "D80"]
[WhiteElo "1771"]
[BlackElo "2052"]
[PlyCount "66"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bf4 Nxc3 6. bxc3 Bg7 7. e3 c5 8. Nf3 0-0 9. Qb3 dxc4 10. Bxc4 Nc6 11. Ng5 e6 12. Be2 cxd4 13. Nf3 e5 14. Bg3 d3 15. Bd1 e4 16. Nd2 Qa5 17. Rc1 Be6 18. Qb2 Bxa2 19. Nxe4 Bd5 20. Bf3 Bxe4 21. Bxe4 Rfd8 22. 0-0 d2 23. Rcd1 Bxc3 24. Qxb7 Ne5 25. f4 Rab8 26. Qe7 Re8 27. Qh4 Nc4 28. f5 Nxe3 29. fxg6 hxg6 30. Bxb8 Qb6 31. Qf2 Nxd1 32. Qxb6 axb6 33. Rxd1 Rxe4 0-1

[Event "Berlin Lichtenrade op 08th"]
[Site "Berlin"]
[Date "2012.10.05"]
[Round "7"]
[White "Piotrowski, Christopher"]
[Black "Moeller, Hendrik"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2074"]
[BlackElo "2259"]
[PlyCount "95"]
[EventDate "2012.09.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 150 Extra"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2012.10.19"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nc6 3. Nc3 Nf6 4. Bg2 Bc5 5. Nf3 d6 6. 0-0 0-0 7. a3 a6 8. e3 Ba7 9. Re1 Re8 10. b4 h6 11. Bb2 Bg4 12. h3 Be6 13. c5 dxc5 14. b5 Na5 15. bxa6 Bb3 16. Qb1 bxa6 17. Ne4 Nxe4 18. Qxe4 Bd5 19. Qa4 Nb3 20. e4 Be6 21. Rad1 f6 22. Bf1 Qd7 23. Qxd7 Bxd7 24. Bxa6 Bxh3 25. Bb5 Re7 26. Nh4 Be6 27. Ng6 Rf7 28. f4 c4+ 29. Kg2 c6 30. Bxc6 Rc8 31. Bb5 Bg4 32. Rb1 Nxd2 33. Rbc1 Bf3+ 34. Kh2 Kh7 35. Nh4 Bxe4 36. Bc3 Nb3 37. Rcd1 Bc2 38. Bd7 Rc7 39. Bf5+ Bxf5 40. Nxf5 exf4 41. gxf4 Bc5 42. Re4 Bxa3 43. Ne3 Bc1 44. Nd5 f5 45. Be5 fxe4 46. Nxc7 Bxf4+ 47. Bxf4 Rxf4 48. Rd8 0-1

[Event "Berlin Lichtenrade op 08th"]
[Site "Berlin"]
[Date "2012.10.03"]
[Round "5"]
[White "Piotrowski, Christopher"]
[Black "Lauridsen, Jesper Morch"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "2074"]
[BlackElo "2248"]
[PlyCount "74"]
[EventDate "2012.09.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 150 Extra"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2012.10.19"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 c5 5. 0-0 Nc6 6. e3 Be7 7. b3 0-0 8. Bb2 b6 9. Nc3 Bb7 10. cxd5 Nxd5 11. Nxd5 exd5 12. d4 Ba6 13. Re1 Nb4 14. Ne5 Bb7 15. a3 Nc6 16. Nd3 cxd4 17. exd4 Rc8 18. Nf4 Na5 19. Qd3 Bg5 20. Nh3 Bf6 21. Nf4 Qd6 22. Bc3 Ba6 23. Qe3 Rfd8 24. Bb4 Qb8 25. Bxd5 Nc6 26. Bxf7+ Kh8 27. Qe6 Rxd4 28. Nd5 Rxd5 29. Qxd5 Bb7 30. Bd6 Qa8 31. Rac1 Ne5 32. Be6 Rxc1 33. Rxc1 Bxd5 34. Rc8+ Qxc8 35. Bxc8 Bxb3 36. Bb8 Nc6 37. Bd6 Be7 0-1

[Event "Berlin Lichtenrade op 07th"]
[Site "Berlin"]
[Date "2011.10.14"]
[Round "7"]
[White "Moeller, Hendrik"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2222"]
[BlackElo "2073"]
[PlyCount "97"]
[EventDate "2011.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. 0-0 0-0 6. b3 c5 7. e3 Nc6 8. Qe2 Qa5 9. Bb2 Rd8 10. cxd5 exd5 11. d4 Bf5 12. a3 Qb6 13. Nbd2 c4 14. Qd1 Na5 15. b4 Nc6 16. Bc3 a5 17. bxa5 Nxa5 18. Ne5 Nc6 19. Qf3 Be6 20. Rfb1 Qc7 21. a4 Nxe5 22. dxe5 Nd7 23. Qd1 Nxe5 24. Nf3 Nxf3+ 25. Bxf3 Bc5 26. Qc2 Qd7 27. Qb2 Rxa4 28. Rxa4 Qxa4 29. Bxg7 Qd7 30. Qe5 Be7 31. Bh8 f6 32. Bxf6 Bxf6 33. Qxf6 Rf8 34. Qg5+ Kh8 35. Qe5+ Kg8 36. Qg5+ Kh8 37. Qe5+ Kg8 38. Bg2 Rc8 39. Rxb7 Qxb7 40. Qxe6+ Kh8 41. Bxd5 Qc7 42. Qf6+ Qg7 43. Qa6 Qc7 44. Be6 c3 45. Bxc8 c2 46. Qa1+ Kg8 47. Be6+ Kf8 48. Qc1 Qc3 49. Bf5 1-0

[Event "Berlin Lichtenrade op 07th"]
[Site "Berlin"]
[Date "2011.10.13"]
[Round "6"]
[White "Piotrowski, Christopher"]
[Black "Reichenbach, Werner"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2073"]
[BlackElo "2310"]
[PlyCount "59"]
[EventDate "2011.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e5 3. Bg2 c6 4. d4 d6 5. dxe5 dxe5 6. Qxd8+ Kxd8 7. Nf3 Nbd7 8. 0-0 h6 9. b3 Bd6 10. Bb2 Re8 11. Nc3 Kc7 12. Ne1 Nf8 13. Nc2 Ne6 14. Rfd1 a5 15. Na4 Nd7 16. Ne3 Nec5 17. Nxc5 Nxc5 18. Rd2 Bf8 19. Rad1 f6 20. Bf3 Be6 21. Bc3 b6 22. g4 Nb7 23. Nf5 Red8 24. h4 Rxd2 25. Rxd2 a4 26. Be4 axb3 27. axb3 Nd6 28. Nxd6 Bxd6 29. f3 Ra3 30. Rxd6 1-0

[Event "Berlin Lichtenrade op 07th"]
[Site "Berlin"]
[Date "2011.10.10"]
[Round "3"]
[White "Piotrowski, Christopher"]
[Black "Boehnisch, Manfred"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "2073"]
[BlackElo "2289"]
[PlyCount "66"]
[EventDate "2011.10.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. c4 c6 2. g3 d5 3. Nf3 Bg4 4. Bg2 e6 5. 0-0 Nd7 6. cxd5 exd5 7. d3 Ngf6 8. Qc2 Bd6 9. e4 0-0 10. h3 Bxf3 11. Bxf3 Re8 12. Nc3 d4 13. Ne2 c5 14. Bg2 Rc8 15. f4 c4 16. e5 Bxe5 17. fxe5 Nxe5 18. Nf4 g5 19. dxc4 gxf4 20. Bxf4 Rxc4 21. Qf5 Ned7 22. Rac1 Rxc1 23. Rxc1 Qb6 24. Rc7 Qe6 25. Qxe6 fxe6 26. g4 e5 27. Bh6 Nb6 28. Rg7+ Kh8 29. Rxb7 Re6 30. Rf7 Nfd7 31. Bg5 e4 32. Kf2 e3+ 33. Ke2 d3+ 0-1

[Event "Berlin Eckbauer op 13th"]
[Site "Berlin"]
[Date "2010.11.01"]
[Round "7.9"]
[White "Piotrowski, Christopher"]
[Black "Hoffmann, Peter"]
[Result "1/2-1/2"]
[ECO "D70"]
[WhiteElo "2086"]
[BlackElo "2062"]
[PlyCount "82"]
[EventDate "2010.09.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. d4 Bg7 7. Bf4 0-0 8. Nb5 Na6 9. a4 c6 10. Na3 Nd7 11. Qd2 b6 12. Bd3 e5 13. dxe5 Qe7 14. Bg5 Qb4 15. Nc4 Qxd2+ 16. Bxd2 Nac5 17. Bc2 Ba6 18. b3 Bxc4 19. bxc4 Nxe5 20. Nxe5 Bxe5 21. 0-0-0 Rfd8 22. Be3 Ne6 23. Rd3 Bf4 24. Kd2 Bxe3+ 25. Kxe3 c5 26. Rd5 Nd4 27. Bd1 Nc6 28. Bb3 Nb4 29. Rxd8+ Rxd8 30. Rd1 Nc6 31. Rd5 Kf8 32. Kf4 Ke7 33. Rxd8 Nxd8 34. Kg5 h5 35. Kf4 Ne6+ 36. Ke3 Nd4 37. Bd1 Kf6 38. f4 h4 39. Bg4 Ke7 40. Bc8 Nc2+ 41. Kd2 Nd4 1/2-1/2

[Event "Berlin Eckbauer op 13th"]
[Site "Berlin"]
[Date "2010.10.25"]
[Round "6.8"]
[White "Mayer, Herbert"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "A29"]
[WhiteElo "1932"]
[BlackElo "2062"]
[PlyCount "31"]
[EventDate "2010.09.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. 0-0 Be7 8. d3 0-0 9. Rb1 Re8 10. a3 f6 11. Be3 Bg4 12. Nd2 Qd7 13. Nde4 Bh3 14. Nc5 Bxc5 15. Bxc5 Bxg2 16. Kxg2 1/2-1/2

[Event "Berlin Eckbauer op 13th"]
[Site "Berlin"]
[Date "2010.10.04"]
[Round "4.5"]
[White "Kievelitz, Bernd"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2101"]
[BlackElo "2086"]
[PlyCount "23"]
[EventDate "2010.09.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qa4+ Nc6 6. Ne5 Ndb4 7. a3 Qd6 8. axb4 Qxe5 9. b5 Nb8 10. d4 Qd6 11. b6+ Qc6 12. Qxa7 1-0

[Event "Berlin Eckbauer op 13th"]
[Site "Berlin"]
[Date "2010.09.27"]
[Round "3.6"]
[White "Piotrowski, Christopher"]
[Black "Krause, Clemens"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2086"]
[BlackElo "2034"]
[PlyCount "57"]
[EventDate "2010.09.13"]
[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 Nc6 3. d3 g6 4. g3 Bg7 5. Bg2 e6 6. 0-0 Nge7 7. Re1 0-0 8. e5 d5 9. Bf4 h6 10. h4 Bd7 11. Nbd2 Nf5 12. Nf1 f6 13. N1h2 fxe5 14. Nxe5 Nxe5 15. Bxe5 Bxe5 16. Rxe5 Qf6 17. Qe1 Nd4 18. Ng4 Qg7 19. c3 Nc2 20. Qc1 Nxa1 21. Nxh6+ Kh7 22. Ng4 Rf5 23. f4 Raf8 24. Qxa1 Rxf4 25. gxf4 Rxf4 26. Rg5 e5 27. Nxe5 Rxh4 28. Qe1 Rf4 29. Qg3 1-0

[Event "Berlin Eckbauer op 13th"]
[Site "Berlin"]
[Date "2010.09.20"]
[Round "2.5"]
[White "Hankow, Bert Juergen"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "1994"]
[BlackElo "2086"]
[PlyCount "98"]
[EventDate "2010.09.13"]
[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 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bb5+ c6 8. Ba4 0-0 9. Ne2 c5 10. 0-0 b6 11. Be3 cxd4 12. cxd4 Bb7 13. f3 Nc6 14. Rc1 Rc8 15. Qd2 Na5 16. Rxc8 Bxc8 17. Bb5 Qd6 18. Qd3 Rd8 19. Rd1 Bd7 20. a4 e6 21. Kf2 Qxh2 22. Bf4 Qh4+ 23. Bg3 Qe7 24. d5 Qc5+ 25. Kf1 Bxb5 26. axb5 exd5 27. exd5 Bh6 28. Bf2 Qd6 29. Bg3 Qc5 30. Bf2 Qc4 31. Bg3 Qxd3 32. Rxd3 Nc4 33. d6 Rd7 34. Nc3 f5 35. Rd4 Nd2+ 36. Ke2 Nb3 37. Rc4 Nc5 38. Nd5 Kf7 39. Rh4 Bg7 40. Rxh7 Kg8 41. Rh1 Ne6 42. Rd1 Nd4+ 43. Kf1 Nxb5 44. Ne7+ Kf7 45. Nc6 Bf6 46. Nb8 Rd8 47. d7 Ke6 48. Re1+ Kd5 49. Rd1+ Ke6 1/2-1/2

[Event "Berlin Eckbauer op 13th"]
[Site "Berlin"]
[Date "2010.09.13"]
[Round "1.5"]
[White "Piotrowski, Christopher"]
[Black "Schilly, Hans Joachim"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "2086"]
[BlackElo "1838"]
[PlyCount "59"]
[EventDate "2010.09.13"]
[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 c6 2. d3 d5 3. Nd2 dxe4 4. dxe4 Nd7 5. Ngf3 Qc7 6. g3 Ngf6 7. Bg2 Ne5 8. Nxe5 Qxe5 9. 0-0 Bg4 10. f3 Bd7 11. c3 e6 12. Qe2 Bc5+ 13. Kh1 0-0-0 14. Nc4 Qh5 15. b4 Be7 16. Be3 Nxe4 17. Qe1 Nd6 18. Nxd6+ Bxd6 19. Bxa7 e5 20. Bb6 Bc7 21. Bxc7 Kxc7 22. c4 f6 23. b5 Ra8 24. Qb4 Qf7 25. Rfd1 Qe6 26. Rd6 Qf5 27. Rad1 Rxa2 28. g4 Qc2 29. Rxd7+ Kc8 30. R7d2 1-0

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.15"]
[Round "9"]
[White "Piotrowski, Christopher"]
[Black "Bandlow, Matthias"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2086"]
[BlackElo "2004"]
[PlyCount "91"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d3 Nf6 4. g3 e6 5. Bg2 Be7 6. 0-0 0-0 7. Nbd2 Nc6 8. b3 Qc7 9. Bb2 b6 10. Nc4 Bb7 11. Nfd2 d5 12. Ne3 d4 13. Ng4 e5 14. f4 Rae8 15. f5 Bc8 16. Nxf6+ Bxf6 17. Nf3 Qe7 18. Bc1 g5 19. h3 Kh8 20. Nh2 Bg7 21. Qh5 f6 22. h4 gxh4 23. Qxh4 Rg8 24. Bf3 Rd8 25. Bh5 Rd6 26. Ng4 Bd7 27. Bg6 Bf8 28. Qh5 Rxg6 29. fxg6 Bxg4 30. Qxg4 h6 31. Rf2 Bg7 32. Rh2 Qf8 33. Kg2 Ne7 34. Bxh6 Bxh6 35. Rxh6+ Qxh6 36. Rh1 Qxh1+ 37. Kxh1 Kg7 38. Kg2 a5 39. a4 Nxg6 40. Qc8 Kh6 41. Kf3 Kg5 42. Qf5+ Kh6 43. Kg4 Kg7 44. Qc8 Kh6 45. Qe8 Kg7 46. Kf5 1-0

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.14"]
[Round "8"]
[White "Schueler, Wolfgang"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1982"]
[BlackElo "2086"]
[PlyCount "80"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nf3 Be7 7. b3 0-0 8. Be3 Bf6 9. Nc3 Re8 10. Be2 Bf5 11. 0-0 Nc6 12. Rc1 d5 13. c5 Nc8 14. h3 Bg6 15. Bd3 Be4 16. Ne5 Bxd3 17. Nxc6 Qd7 18. Qxd3 bxc6 19. f3 Ne7 20. Rfe1 Nf5 21. Bf2 g6 22. Kf1 Re6 23. Rxe6 fxe6 24. f4 Qg7 25. Ne2 g5 26. g4 Ne7 27. Rd1 Rf8 28. Kg2 Ng6 29. f5 exf5 30. Qxf5 Qe7 31. Qd3 Re8 32. Kf1 Qf7 33. Qf5 Re4 34. Rd3 Nf4 35. Nxf4 Rxf4 36. Qc8+ Kg7 37. Kg2 h5 38. gxh5 Qxh5 39. Qxc7+ Kh6 40. Qxc6 Qe2 0-1

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.13"]
[Round "7"]
[White "Piotrowski, Christopher"]
[Black "Wuersig, Mathias"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2086"]
[BlackElo "1868"]
[PlyCount "51"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 d6 2. c4 Nf6 3. Nc3 e5 4. Nf3 Nc6 5. Be2 g6 6. d4 Bg4 7. d5 Bxf3 8. Bxf3 Nd4 9. Be3 Nxf3+ 10. Qxf3 Be7 11. Qe2 Nd7 12. 0-0 Bg5 13. Kh1 0-0 14. b4 a5 15. a3 Bxe3 16. Qxe3 f5 17. f3 f4 18. Qf2 Qe7 19. Nb5 Rfc8 20. Rfc1 b6 21. Nc3 c6 22. dxc6 Rxc6 23. Qe2 Rb8 24. Qd3 Nf6 25. Nd5 Nxd5 26. Qxd5+ 1-0

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.11"]
[Round "6"]
[White "Barwich, Alfred"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "E29"]
[WhiteElo "1909"]
[BlackElo "2086"]
[PlyCount "125"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 c5 6. a3 Bxc3+ 7. bxc3 Nc6 8. Nf3 Qc7 9. 0-0 b6 10. e4 d5 11. cxd5 exd5 12. exd5 Nxd5 13. dxc5 h6 14. Qc2 bxc5 15. Be4 Nf6 16. Bf5 Ne5 17. Nxe5 Qxe5 18. Bxc8 Raxc8 19. h3 Rfd8 20. Bb2 c4 21. Rfe1 Qf4 22. Bc1 Qh4 23. Qf5 Re8 24. Be3 Ne4 25. Bd4 g6 26. Qg4 Qxg4 27. hxg4 Kf8 28. f3 Nc5 29. Rxe8+ Kxe8 30. Re1+ Kd7 31. Rb1 Kc6 32. Rb4 Kd5 33. Rb5 Kd6 34. Ra5 Nb3 35. Ra6+ Kd5 36. Be3 h5 37. gxh5 gxh5 38. Rxa7 Re8 39. Kf2 f6 40. a4 Re5 41. Ra6 Rf5 42. Rb6 Ke5 43. Rb4 Na5 44. Rb5+ Ke6 45. Rxf5 Kxf5 46. Bb6 Nc6 47. Bc7 Ke6 48. Kg3 Ne7 49. Kh4 Nd5 50. Ba5 Nf4 51. g3 Ne2 52. Bb4 Ng1 53. f4 Ne2 54. a5 Kd5 55. f5 Kc6 56. a6 Kb6 57. Be7 Nxc3 58. Bxf6 Ne4 59. Bd4+ Kxa6 60. f6 Nd6 61. Kxh5 Kb7 62. Kg6 Kc6 63. Be5 1-0

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.11"]
[Round "5"]
[White "Piotrowski, Christopher"]
[Black "Buraczynski, Radoslaw"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "2086"]
[BlackElo "1789"]
[PlyCount "113"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 c6 4. 0-0 Nd7 5. d3 Ngf6 6. Nbd2 e5 7. e4 dxe4 8. dxe4 Be7 9. Qe2 0-0 10. Nc4 a5 11. a4 Qc7 12. b3 Bh5 13. Bb2 Ne8 14. Rfd1 f6 15. Qe3 Rd8 16. Bc3 b6 17. Rd2 Nd6 18. Bf1 Bf7 19. Nxd6 Bxd6 20. Bh3 Nc5 21. Nh4 g6 22. Rad1 Be7 23. Qe2 Rxd2 24. Rxd2 Rd8 25. Ng2 Rxd2 26. Bxd2 Ne6 27. Ne3 Nd4 28. Qd1 b5 29. axb5 cxb5 30. Nd5 Bxd5 31. exd5 b4 32. Be3 Qxc2 33. Qa1 Qc3 34. Qa4 Qc7 35. Qe8+ Kg7 36. Bxd4 exd4 37. Qc6 Qxc6 38. dxc6 Bd6 39. Be6 f5 40. Kf1 Kf6 41. Bc4 Ke5 42. Ke2 g5 43. f3 h5 44. h3 Bc7 45. Kd3 Bb6 46. Bf7 h4 47. gxh4 gxh4 48. Bg8 Kf4 49. Be6 Kxf3 50. Bxf5 Kf4 51. Bh7 Kg3 52. Bf5 Kf2 53. c7 Bxc7 54. Kxd4 Ke2 55. Kc4 Kd2 56. Kb5 Kc3 57. Ka4 1/2-1/2

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.10"]
[Round "4"]
[White "Jachym, Adam"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1835"]
[BlackElo "2086"]
[PlyCount "95"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. Qf2 Qb6 10. 0-0-0 Qa5 11. Kb1 c4 12. f5 Nb6 13. Ng5 Ra7 14. fxe6 Bxe6 15. Be2 Be7 16. Nxe6 fxe6 17. Bg4 Nd8 18. Qf3 Bb4 19. Ne2 c3 20. b3 Nc4 21. Bc1 Rc7 22. Rd3 Rf8 23. Qh3 g6 24. Qg3 Rff7 25. Ka1 Nb6 26. h4 Nc8 27. h5 Ne7 28. hxg6 hxg6 29. Nf4 Nf5 30. Bxf5 gxf5 31. Rh8+ Kd7 32. Rxd8+ Kxd8 33. Qg8+ Bf8 34. Nxe6+ Ke8 35. Nxc7+ Qxc7 36. Qg6 Kd8 37. Bg5+ Kc8 38. Qxa6+ Kb8 39. Bf4 Rh7 40. a3 Rh1+ 41. Ka2 b4 42. g3 Qb7 43. e6+ Kc8 44. Qa4 Kd8 45. Bg5+ Be7 46. Bxe7+ Qxe7 47. Qa8+ Kc7 48. Qa7+ 1-0

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.09"]
[Round "3"]
[White "Piotrowski, Christopher"]
[Black "Schmid, Thomas"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "2086"]
[BlackElo "2268"]
[PlyCount "88"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. Nf3 g6 2. g3 Bg7 3. d4 c5 4. c3 Nf6 5. Bg2 0-0 6. 0-0 d6 7. dxc5 dxc5 8. Nbd2 Nc6 9. Qc2 Qc7 10. e4 b6 11. a4 Ba6 12. Re1 Rad8 13. Bf1 Bxf1 14. Nxf1 Nd7 15. Bf4 Nde5 16. N1d2 Qc8 17. Nxe5 Bxe5 18. Bh6 Bg7 19. Bxg7 Kxg7 20. Nc4 Qe6 21. Qe2 Rd7 22. Rad1 Rfd8 23. Rxd7 Rxd7 24. f3 h5 25. Kg2 Rd8 26. f4 Qd7 27. Ne3 Qd2 28. Kf2 Qd7 29. Kg2 Qc8 30. Rd1 Rd7 31. Rd5 e6 32. Rxd7 Qxd7 33. Qd1 Qxd1 34. Nxd1 e5 35. Ne3 Kf6 36. Kf3 Ke7 37. Ke2 f6 38. Kd3 exf4 39. gxf4 g5 40. Kc4 Ke6 41. Nd5 h4 42. Kd3 Na5 43. f5+ Ke5 44. Ne3 c4+ 0-1

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.07"]
[Round "2"]
[White "Brauer, Thilo"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "1830"]
[BlackElo "2086"]
[PlyCount "50"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nxc3 6. bxc3 c5 7. Rb1 Nc6 8. Nf3 Bg7 9. 0-0 0-0 10. a4 Qc7 11. Qc2 c4 12. d4 cxd3 13. exd3 Bg4 14. Bf4 e5 15. Be3 Rac8 16. Rfc1 Rfd8 17. Ne1 b6 18. d4 Na5 19. d5 Nc4 20. h3 Bf5 21. Qb3 Bxb1 22. Qxb1 Nxe3 23. fxe3 Qc4 24. Kf2 Bh6 25. Qe4 f5 0-1

[Event "Berlin Lichtenberger op 9th"]
[Site "Berlin"]
[Date "2010.08.07"]
[Round "1"]
[White "Piotrowski, Christopher"]
[Black "Schlittermann, Wolfgang"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "2086"]
[BlackElo "1683"]
[PlyCount "91"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 Nh5 5. Nh3 Nc6 6. e4 d5 7. Be3 dxe4 8. fxe4 Qh4+ 9. Nf2 g6 10. Qd2 Qd8 11. Be2 Ng7 12. 0-0 0-0 13. Ng4 f5 14. Nh6+ Kh8 15. d5 exd5 16. cxd5 Ne5 17. Qd4 Bd6 18. Nb5 a6 19. Nxd6 cxd6 20. Rac1 Bd7 21. Qb4 Bc8 22. Bb6 Qh4 23. Qxd6 Nd7 24. e5 Ne8 25. Nxf5 Rxf5 26. Qe6 Rxe5 27. Rf8+ Kg7 28. Qf7+ Kh6 29. Rxe8 Rxe8 30. Qxe8 Qb4 31. Be3+ Kg7 32. Rf1 Nf6 33. Qe5 Bf5 34. Bd4 Qf8 35. Qxf6+ Qxf6 36. Bxf6+ Kxf6 37. g4 Rd8 38. Bc4 b5 39. Bb3 Ke5 40. gxf5 gxf5 41. Re1+ Kf4 42. Kf2 h5 43. Re6 a5 44. d6 h4 45. Bd5 Kg5 46. Bc6 1-0

[Event "Oberliga Nord O 0910"]
[Site "Germany"]
[Date "2010.04.11"]
[Round "9.8"]
[White "Piotrowski, Christopher"]
[Black "Kaiser, Joachim"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2071"]
[BlackElo "2138"]
[PlyCount "79"]
[EventDate "2009.10.18"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Koenig Tegel"]
[BlackTeam "Kreuzberg"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 d5 2. g3 Nc6 3. d4 Bg4 4. Bg2 Qd7 5. c4 e6 6. cxd5 exd5 7. Bf4 Bb4+ 8. Nc3 Nge7 9. Rc1 Ng6 10. Be3 0-0 11. 0-0 a5 12. a3 Be7 13. Nd2 Be6 14. f4 Bf6 15. Nf3 Nce7 16. Na4 Bg4 17. Ne5 Bxe5 18. Nc5 Qb5 19. dxe5 Bxe2 20. a4 Bxd1 21. axb5 Be2 22. Rf2 Bxb5 23. Nxb7 Bc4 24. b3 Bxb3 25. Rxc7 Nf5 26. Bc1 Rfc8 27. Rxc8+ Rxc8 28. Ba3 a4 29. Bh3 Rb8 30. Nc5 Nd4 31. Nd7 Re8 32. Bb2 Nc6 33. Nc5 Re7 34. Rf3 Ra7 35. Bd7 Na5 36. f5 Nf8 37. e6 fxe6 38. fxe6 Ng6 39. e7 Nxe7 40. Be6+ 1-0

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.23"]
[Round "9"]
[White "Piotrowski, Christopher"]
[Black "Tiemer, Klaus"]
[Result "1-0"]
[ECO "D79"]
[WhiteElo "2063"]
[BlackElo "2067"]
[PlyCount "49"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. 0-0 Bg7 5. d4 0-0 6. c4 c6 7. cxd5 cxd5 8. Ne5 Ng4 9. Bf4 Nxe5 10. Bxe5 Nc6 11. Bxg7 Kxg7 12. Nc3 e6 13. Qd2 Qf6 14. Rfd1 Rd8 15. h4 h6 16. Rac1 Bd7 17. e4 dxe4 18. Nxe4 Qe7 19. Nc5 Be8 20. Qc3 f6 21. d5 exd5 22. Re1 Qd6 23. Re6 Qb8 24. Qxf6+ Kh7 25. Rce1 1-0

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.22"]
[Round "8"]
[White "Casny, Guenter"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "A38"]
[WhiteElo "1865"]
[BlackElo "2063"]
[PlyCount "38"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. Nf3 g6 5. g3 Bg7 6. Bg2 0-0 7. 0-0 c5 8. Nxd5 Qxd5 9. d3 Nc6 10. Nd2 Qh5 11. Nb3 Bh3 12. Re1 Rad8 13. Bxh3 Qxh3 14. Nxc5 Bd4 15. Ne4 Ne5 16. Ng5 Bxf2+ 17. Kxf2 Qxh2+ 18. Kf1 Ng4 19. Ne4 Qh1# 0-1

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.21"]
[Round "7"]
[White "Knebel, Lothar"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "1789"]
[BlackElo "2063"]
[PlyCount "135"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. e4 Nxc3 5. bxc3 g6 6. Nf3 Bg7 7. Bc4 c5 8. 0-0 Nc6 9. a4 0-0 10. h3 Na5 11. Ba2 c4 12. Ba3 Qc7 13. Qe2 Rd8 14. Bb4 Nc6 15. Ba3 Qf4 16. Qe3 Qxe3 17. fxe3 Be6 18. Nd4 Bh6 19. Rf2 Nxd4 20. exd4 f5 21. exf5 gxf5 22. Bxe7 Rd7 23. Bh4 f4 24. Re1 Bd5 25. Re5 Rf8 26. Rxd5 Rxd5 27. Bxc4 Rff5 28. g4 Kg7 29. Bxd5 Rxd5 30. Re2 f3 31. Re5 Rxe5 32. dxe5 Bxd2 33. c4 Be3+ 34. Bf2 Bf4 35. Bxa7 Bxe5 36. Kf2 Kf7 37. Kxf3 Ke6 38. Ke4 Bg3 39. Bd4 Bh2 40. Be3 Be5 41. c5 Bf6 42. a5 Kd7 43. Kf5 Bc3 44. Kg5 Bg7 45. h4 Kc6 46. h5 Kb5 47. Kf5 Kxa5 48. Ke6 Kb5 49. Kd5 h6 50. g5 hxg5 51. Bxg5 Bf8 52. Be3 Ka6 53. h6 Bxh6 54. Bxh6 Ka7 55. Kd6 Kb8 56. Bf4 Ka8 57. Kc7 Ka7 58. Kc8 Ka8 59. Bb8 b5 60. Be5 b4 61. c6 b3 62. c7 b2 63. Bxb2 Ka7 64. Kd7 Kb6 65. c8Q Ka5 66. Qb7 Ka4 67. Bc3 Ka3 68. Qb4+ 1-0

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.20"]
[Round "6"]
[White "Piotrowski, Christopher"]
[Black "Muse, Drazen"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "2063"]
[BlackElo "2374"]
[PlyCount "68"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. e4 g6 2. c4 Bg7 3. d4 d6 4. Be2 e5 5. Nf3 exd4 6. Nxd4 Nc6 7. Be3 Nge7 8. Nc3 0-0 9. h4 f5 10. Qd2 Be5 11. h5 f4 12. Nxc6 Nxc6 13. Qd5+ Kg7 14. Bc1 Nd4 15. Qa5 Nc2+ 16. Kd1 Nxa1 17. g3 g5 18. gxf4 gxf4 19. Nd5 b6 20. Qa3 a5 21. Qf3 c6 22. Nxf4 Qf6 23. Qg2+ Kh8 24. Ng6+ hxg6 25. Bg5 Qxf2 26. hxg6+ Kg8 27. Qxf2 Rxf2 28. c5 Rxe2 29. Kxe2 Nc2 30. cxd6 Nd4+ 31. Ke3 Nb5 32. Be7 Nxd6 33. Rh5 Nc4+ 34. Ke2 Bg4+ 0-1

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.19"]
[Round "5"]
[White "Piotrowski, Christopher"]
[Black "Solonar, Stefan"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "2063"]
[BlackElo "2364"]
[PlyCount "73"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N5c3 a6 7. Na3 b5 8. Nd5 Be7 9. Bd3 Nf6 10. c3 0-0 11. Nxf6+ Bxf6 12. 0-0 Ne7 13. Nc2 Bb7 14. Ne3 Bg5 15. Qg4 Ng6 16. g3 Bc8 17. Nf5 Bxc1 18. Raxc1 Qf6 19. Rfd1 Ne7 20. Nxe7+ Qxe7 21. Qe2 Bb7 22. Bc2 Kh8 23. Bb3 f5 24. f3 fxe4 25. fxe4 Qg5 26. Rf1 Rf4 27. Rcd1 Qg6 28. Bd5 Bxd5 29. Rxd5 Rxf1+ 30. Qxf1 Qxe4 31. Rxd6 Kg8 32. Qd1 Qe3+ 33. Kg2 Rf8 34. Rd8 Qf2+ 35. Kh3 Qf5+ 36. Kg2 Qf2+ 37. Kh3 1/2-1/2

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.18"]
[Round "4"]
[White "Tong, Lukas Fabian Chuan"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "D90"]
[WhiteElo "1869"]
[BlackElo "2063"]
[PlyCount "90"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Nf3 Bg7 6. Qb3 Nb6 7. e3 Be6 8. Qd1 0-0 9. Be2 Na6 10. 0-0 Rc8 11. Bxa6 bxa6 12. Ne4 f5 13. Nc5 Bd5 14. Bd2 e5 15. Nxe5 Bxe5 16. dxe5 Qe7 17. Rc1 Bc4 18. Re1 Qxc5 19. b3 Rcd8 20. bxc4 Qxe5 21. Qc2 Qe4 22. Qxe4 fxe4 23. Ba5 Rf5 24. c5 Nd5 25. Red1 Rb8 26. Rd4 Rb2 27. Be1 Nf6 28. Rd2 Rxd2 29. Bxd2 Ng4 30. Be1 Ne5 31. Ba5 Nd3 32. Rc2 c6 33. g4 Rxc5 34. Rxc5 Nxc5 35. Bb4 Nd3 36. Bd6 c5 37. Kf1 c4 38. Ke2 Kf7 39. Ba3 Ke6 40. f3 Kd5 41. fxe4+ Kxe4 42. Bd6 c3 43. Kd1 Kxe3 44. Bb8 Nb4 45. Bxa7+ Kd3 0-1

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.16"]
[Round "3"]
[White "Piotrowski, Christopher"]
[Black "Bach, Matthias"]
[Result "0-1"]
[ECO "B29"]
[WhiteElo "2063"]
[BlackElo "2307"]
[PlyCount "84"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. e5 Nd5 4. Nc3 e6 5. Nxd5 exd5 6. d4 Nc6 7. dxc5 Bxc5 8. Qxd5 Qb6 9. Bc4 Bxf2+ 10. Ke2 0-0 11. Rf1 Bc5 12. Ng5 Nd4+ 13. Kd1 Ne6 14. Ne4 Be7 15. Bd2 Qc7 16. Bd3 Qc6 17. c4 b5 18. Nf6+ Bxf6 19. exf6 g6 20. Bb4 Re8 21. Qxc6 dxc6 22. Be7 bxc4 23. Bxc4 Nd4 24. Kd2 Be6 25. Bxe6 Nxe6 26. Rae1 Nc7 27. Re5 Nd5 28. Rfe1 h6 29. h4 h5 30. Kd3 Rab8 31. b3 Nf4+ 32. Kc4 Ne6 33. a4 Rb7 34. Rd1 Nf8 35. Bxf8 Rxe5 36. Rd8 Rd5 37. Rc8 g5 38. Rxc6 Rd2 39. Bc5 gxh4 40. a5 Rxg2 41. a6 Rd7 42. b4 h3 0-1

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.16"]
[Round "2"]
[White "Schueler, Wolfgang"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "B05"]
[WhiteElo "1998"]
[BlackElo "2063"]
[PlyCount "60"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nf3 Be7 7. Be2 Bg4 8. Be3 0-0 9. Qd3 Bh5 10. Nc3 Nc6 11. b3 Re8 12. 0-0 Bg6 13. Qd2 d5 14. c5 Nc8 15. h3 Bf6 16. Bd3 Be4 17. Be2 N8e7 18. Rac1 Nf5 19. Rfd1 Nxe3 20. fxe3 Bg5 21. Nxe4 Rxe4 22. Rc3 Bh6 23. Bb5 Ne7 24. Re1 Nf5 25. g4 Nh4 26. Qf2 Nxf3+ 27. Qxf3 Qe7 28. Rd3 c6 29. Ba4 Re8 30. Kf2 Rf4 0-1

[Event "Berlin Lichtenberger op 8th"]
[Site "Berlin"]
[Date "2009.08.15"]
[Round "1"]
[White "Piotrowski, Christopher"]
[Black "Krusemark, Gerhard"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2063"]
[BlackElo "1858"]
[PlyCount "87"]
[EventDate "2009.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 131 Extra"]
[Source "ChessBase"]
[SourceDate "2009.09.03"]
[SourceVersion "2"]
[SourceVersionDate "2009.09.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 Qe7 6. d3 Nf6 7. Nc3 Nc6 8. Bg5 Be6 9. Ne4 0-0-0 10. a3 h6 11. Bxf6 gxf6 12. 0-0-0 d5 13. Ng3 Qc5 14. d4 Qb6 15. Qb5 h5 16. Nh4 Ne7 17. Qxb6 axb6 18. Bd3 Bh6+ 19. Kb1 Bg5 20. Nhf5 Nc6 21. h4 Bf4 22. Ne2 Bd6 23. Nxd6+ Rxd6 24. c3 Bg4 25. Rhe1 Bxe2 26. Rxe2 Kd8 27. Rde1 Rd7 28. Bb5 Re7 29. Bxc6 Rxe2 30. Rxe2 bxc6 31. a4 Rg8 32. f3 Kd7 33. Ka2 Kd6 34. b4 Ra8 35. Kb3 Rb8 36. c4 c5 37. dxc5+ bxc5 38. b5 d4 39. a5 c6 40. b6 Kd7 41. Kc2 Kd8 42. g4 Kd7 43. gxh5 Rh8 44. a6 1-0

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "3"]
[White "Hahn, Markus"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "E67"]
[WhiteElo "1837"]
[BlackElo "2042"]
[PlyCount "110"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 d6 4. g3 Nbd7 5. Bg2 Bg7 6. 0-0 e5 7. dxe5 dxe5 8. Nc3 c6 9. Bg5 h6 10. Be3 0-0 11. Qd2 Kh7 12. Rfd1 Qe7 13. Qd6 Qxd6 14. Rxd6 Ng4 15. Bd2 f5 16. e4 Ngf6 17. Nh4 Nc5 18. Re1 fxe4 19. Nxe4 Ncxe4 20. Bxe4 Nxe4 21. Rxe4 g5 22. Ng2 Bf5 23. Re1 Rad8 24. Rxd8 Rxd8 25. Bc3 e4 26. Bxg7 Kxg7 27. Ne3 Be6 28. Rc1 c5 29. b3 Kf6 30. Rd1 Rxd1+ 31. Nxd1 Ke5 32. Kf1 Kd4 33. Ke1 Kd3 34. a3 Kc2 35. b4 cxb4 36. axb4 Bxc4 37. Ne3+ Kb3 38. Nf5 Kxb4 39. Nxh6 Be6 40. h3 a5 41. Kd2 a4 42. Kc1 Kc3 43. Kb1 b5 44. g4 b4 45. Nf5 b3 46. Nd6 Bd5 47. Nb5+ Kb4 48. Nc7 Bc6 49. Ne6 a3 50. Nd4 Bd5 51. Ka1 Kc3 52. Nb5+ Kb4 53. Nc7 b2+ 54. Kb1 Kb3 55. Nxd5 a2# 0-1

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "1"]
[White "Meinhardt, Maximilian"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2389"]
[BlackElo "2042"]
[PlyCount "69"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Be7 7. Bd3 Nc6 8. Nge2 Bg4 9. Be3 Nb4 10. Be4 d5 11. cxd5 N4xd5 12. 0-0 0-0 13. Qc2 h6 14. Bc1 c6 15. h3 Nb4 16. Qb1 Be6 17. Rd1 Bd5 18. Nxd5 N4xd5 19. Ng3 Nf6 20. Bf3 Bd6 21. Nf5 Bc7 22. Bd2 Nbd5 23. Qc1 Re8 24. Bxh6 g6 25. Ng3 Bxg3 26. fxg3 Ne4 27. Bf4 g5 28. Be5 f6 29. Bxe4 fxe5 30. dxe5 Rxe5 31. Bf3 Qb6+ 32. Kh2 Ne3 33. Rd7 Nf5 34. Qc4+ Kh8 35. Qf7 1-0

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "5"]
[White "Piotrowski, Christopher"]
[Black "Harff, Marcel"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2042"]
[BlackElo "2181"]
[PlyCount "71"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ngf3 b6 8. a3 Bb7 9. 0-0 Be7 10. Re1 h6 11. Nf1 a5 12. Qe2 c4 13. Bc2 b5 14. h3 b4 15. N3h2 bxc3 16. bxc3 a4 17. Qg4 Kf8 18. Ng3 Bg5 19. f4 Bh4 20. Rf1 Bxg3 21. Qxg3 g6 22. Nf3 Ne7 23. Nh4 Nf5 24. Nxf5 exf5 25. Qe3 Kg7 26. g4 fxg4 27. f5 Qg5 28. f6+ Kg8 29. Qg3 gxh3 30. Bxg5 h2+ 31. Kf2 hxg5 32. Qxg5 Nxe5 33. dxe5 d4 34. Bxg6 h1N+ 35. Rxh1 Rxh1 36. Bf5+ 1-0

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "2"]
[White "Piotrowski, Christopher"]
[Black "Osswald, Luis Monty"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2042"]
[BlackElo "2142"]
[PlyCount "41"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d3 d6 4. b3 e6 5. Bb2 Nf6 6. g3 Be7 7. Bg2 0-0 8. 0-0 Qc7 9. Nbd2 a6 10. a4 b6 11. Ne1 Nd7 12. f4 f5 13. Qe2 Bf6 14. e5 dxe5 15. fxe5 Ndxe5 16. Bxe5 Bxe5 17. Bxc6 Bd4+ 18. Rf2 Qxc6 19. Rd1 Bb7 20. Ndf3 g5 21. Ng2 0-1

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "6"]
[White "Piotrowski, Christopher"]
[Black "Zwahr, Paul"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2042"]
[BlackElo "2276"]
[PlyCount "50"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 d6 7. Nbd2 Nge7 8. c3 0-0 9. a4 Rb8 10. Nc4 a6 11. Ng5 b5 12. axb5 axb5 13. Ne3 b4 14. Bd2 bxc3 15. bxc3 Bb7 16. f4 Ba8 17. Qg4 d5 18. e5 d4 19. cxd4 Qxd4 20. Qh4 h6 21. Ne4 Nf5 22. Rae1 Nxh4 23. Bc3 Qxd3 24. gxh4 Nd4 25. Bxd4 Qxd4 0-1

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "7"]
[White "Riegel, Frank"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1680"]
[BlackElo "2042"]
[PlyCount "62"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. Nf3 dxe5 6. Nxe5 c5 7. d5 e6 8. dxe6 Qxd1+ 9. Kxd1 Bxe6 10. b3 Be7 11. Bb2 Bf6 12. Nd2 Nc6 13. Nd3 Nd7 14. Bxf6 Nxf6 15. Nxc5 Bc8 16. Bd3 0-0 17. Nde4 Ng4 18. h3 Nge5 19. Ke2 Re8 20. Kd2 b6 21. Na4 Rd8 22. Nb2 Nb4 23. Kc3 Nbxd3 24. Rad1 Bf5 25. Ng3 Bg6 26. f4 Nxf4 27. Rde1 Ned3 28. Re3 Rac8 29. Rf1 Nd5+ 30. Kd2 Nxe3 31. Kxe3 Nxb2 0-1

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "4"]
[White "Schmidt, Martin2"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "2001"]
[BlackElo "2042"]
[PlyCount "52"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. exd6 exd6 5. Bd3 Be7 6. b3 Nc6 7. Bb2 Bf6 8. Nf3 Bg4 9. Be4 Nde7 10. c3 d5 11. Bd3 0-0 12. 0-0 Ng6 13. h3 Be6 14. Bc1 Qd7 15. Kh2 Qd6+ 16. Kg1 Nf4 17. Bxf4 Qxf4 18. Qd2 Qd6 19. Ng5 g6 20. Nxe6 fxe6 21. Qh6 e5 22. dxe5 Nxe5 23. Be2 Nf7 24. Qd2 d4 25. cxd4 Bxd4 26. Nc3 Bxf2+ 0-1

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2008.05.04"]
[Round "7"]
[White "Piotrowski, Christopher"]
[Black "Schlemermeyer, Wilhelm"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "2036"]
[BlackElo "2310"]
[PlyCount "64"]
[EventDate "2008.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. b3 dxc4 5. bxc4 Qd4 6. Nc3 Qxc4 7. Nf3 g6 8. Bb2 Bg7 9. Ne5 Qa6 10. d4 0-0 11. 0-0 Nbd7 12. Nd3 Qa5 13. e4 Nb6 14. Qb3 Be6 15. d5 cxd5 16. Nf4 Rad8 17. Ba3 d4 18. Nxe6 fxe6 19. Bb4 Qa6 20. Qxe6+ Rf7 21. Rad1 Nfd7 22. Nd5 Nxd5 23. exd5 Qc4 24. Bxe7 Re8 25. Rc1 Qxa2 26. Ra1 Qxa1 27. Rxa1 Rexe7 28. Rxa7 d3 29. Rxb7 d2 30. Rb1 Nf8 31. Bh3 Nxe6 32. Bxe6 Rc7 0-1

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2008.05.03"]
[Round "5"]
[White "Piotrowski, Christopher"]
[Black "Schwekendiek, Ulrich"]
[Result "0-1"]
[ECO "D34"]
[WhiteElo "2036"]
[BlackElo "2285"]
[PlyCount "60"]
[EventDate "2008.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. d4 c5 4. cxd5 exd5 5. Nf3 Nc6 6. Nc3 Nf6 7. Bg5 Be7 8. Bg2 0-0 9. 0-0 cxd4 10. Nxd4 h6 11. Nxc6 bxc6 12. Be3 Re8 13. Bd4 Bg4 14. Qa4 Qd7 15. Rfe1 Rab8 16. a3 c5 17. Be5 Rxb2 18. Bxd5 Qxa4 19. Nxa4 Rxe2 20. Bc6 Rc8 21. Bb7 Rd8 22. f3 Rxe1+ 23. Rxe1 Be6 24. Rc1 c4 25. Rc3 Rd2 26. Ba6 Rd5 27. Bc7 Ne8 28. Bxc4 Rd1+ 29. Kf2 Nxc7 30. Be2 Rd7 0-1

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2008.05.03"]
[Round "6"]
[White "Rath, Alina"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "D71"]
[WhiteElo "1886"]
[BlackElo "2036"]
[PlyCount "74"]
[EventDate "2008.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nxc3 6. bxc3 c5 7. d4 Bg7 8. e3 Nc6 9. Ne2 0-0 10. 0-0 cxd4 11. cxd4 e5 12. d5 Na5 13. Rb1 Re8 14. e4 Nc4 15. Qb3 Nd6 16. Ba3 Bf8 17. Rfc1 f5 18. f3 Rb8 19. Nc3 b5 20. Bb4 Nc4 21. Qc2 Bh6 22. Re1 Qb6+ 23. Qf2 Be3 24. Rxe3 Qxe3 25. Qxe3 Nxe3 26. Bc5 Nxg2 27. Kxg2 Bd7 28. Bxa7 Rbc8 29. Nxb5 Rc2+ 30. Kg1 Rxa2 31. Bb6 fxe4 32. fxe4 Bh3 33. Nd6 Rea8 34. Be3 Rg2+ 35. Kh1 Re2 36. Bg5 Rb2 37. Rc1 Raa2 0-1

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2008.05.02"]
[Round "4"]
[White "Seehagen, Jan"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "C11"]
[BlackElo "2036"]
[PlyCount "46"]
[EventDate "2008.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Ne2 b5 8. c3 Qb6 9. Be3 a5 10. dxc5 Bxc5 11. Ned4 b4 12. Bb5 Bxd4 13. Nxd4 Nxd4 14. Bxd7+ Bxd7 15. Bxd4 Qa6 16. Rc1 0-0 17. cxb4 axb4 18. Rc7 Bb5 19. Bc5 Rfc8 20. Rxc8+ Rxc8 21. Bxb4 Rc4 22. Bd2 Qb6 23. Qb3 Re4+ 0-1

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2008.05.01"]
[Round "2"]
[White "Pachow, Joerg"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "2249"]
[BlackElo "2036"]
[PlyCount "81"]
[EventDate "2008.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 0-0 5. Bg2 c5 6. c4 Nc6 7. 0-0 d5 8. cxd5 Nxd5 9. Bxg7 Kxg7 10. d4 cxd4 11. Nxd4 e5 12. Nxc6 bxc6 13. Qc1 Ba6 14. Qxc6 Nb6 15. Qc3 Bxe2 16. Qxe5+ Qf6 17. Qxf6+ Kxf6 18. Re1 Rac8 19. a4 a5 20. Nd2 Bd3 21. b4 axb4 22. a5 Na8 23. a6 Rfd8 24. Bb7 Rc2 25. Ne4+ Bxe4 26. Bxe4 Rcd2 27. Reb1 R2d4 28. Bb7 Rb8 29. Ra5 Rc4 30. Rb5 b3 31. R1xb3 Ra4 32. Rc3 Ke7 33. h4 Kd6 34. Rc6+ Kd7 35. Rd5+ Ke7 36. Kg2 Rb4 37. Re5+ Kf8 38. Rec5 Nb6 39. a7 Re8 40. Rxb6 Rxb6 41. Rc8 1-0

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2008.05.01"]
[Round "3"]
[White "Piotrowski, Christopher"]
[Black "Dvorsky, Rudolf"]
[Result "1-0"]
[ECO "D79"]
[WhiteElo "2036"]
[PlyCount "65"]
[EventDate "2008.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 d5 3. Bg2 Nf6 4. 0-0 g6 5. c3 Bg7 6. d4 cxd4 7. cxd4 Nc6 8. Nc3 0-0 9. Ne5 Ne4 10. Nxc6 Nxc3 11. Nxe7+ Qxe7 12. bxc3 Be6 13. Qb3 Rfc8 14. Bd2 Rc4 15. Rfb1 b6 16. Qxc4 dxc4 17. Bxa8 Bh3 18. Bf3 h5 19. a4 h4 20. a5 g5 21. axb6 axb6 22. Rb5 g4 23. Ra8+ Kh7 24. Rh5+ Kg6 25. Rg5+ Kh7 26. Bxg4 Bxg4 27. Rxg4 Qxe2 28. Rxh4+ Kg6 29. Be3 Qe1+ 30. Kg2 Qxc3 31. Rg8 f5 32. Bh6 Kf7 33. Rxg7+ 1-0

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2008.04.30"]
[Round "1"]
[White "Piotrowski, Christopher"]
[Black "Karim, Ismael"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2036"]
[BlackElo "2394"]
[PlyCount "75"]
[EventDate "2008.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 124 Extra"]
[Source "ChessBase"]
[SourceDate "2008.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2008.07.03"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 c5 4. g3 Nc6 5. Bg2 e5 6. d3 Nge7 7. Nd5 Nxd5 8. cxd5 Ne7 9. 0-0 d6 10. e4 0-0 11. h4 h6 12. Nh2 Kh8 13. Be3 f5 14. Qd2 Ng8 15. f4 exf4 16. Bxf4 Qf6 17. Nf3 Bd7 18. e5 dxe5 19. Nxe5 Be8 20. Rfe1 Rd8 21. Rac1 b6 22. b4 Kh7 23. bxc5 bxc5 24. Rxc5 Qb6 25. d4 Nf6 26. Nc4 Qa6 27. Re6 Qa4 28. Be5 Ne4 29. Bxe4 Bxe5 30. dxe5 fxe4 31. Re7+ Kg8 32. Rcc7 Rd7 33. Rexd7 Bxd7 34. e6 e3 35. Nxe3 Qe4 36. exd7 Qe5 37. Rc8 Qxg3+ 38. Ng2 1-0

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2007.05.20"]
[Round "7"]
[White "Piotrowski, Christopher"]
[Black "Sondermann, Johannes"]
[Result "0-1"]
[ECO "A87"]
[BlackElo "2173"]
[PlyCount "78"]
[EventDate "2007.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. d4 Bg7 5. 0-0 0-0 6. c4 d6 7. Nc3 Qe8 8. d5 a5 9. Be3 h6 10. Qd2 Kh7 11. Nd4 Na6 12. Ncb5 a4 13. f3 c6 14. Nc3 cxd5 15. cxd5 Nc7 16. Nc2 Nb5 17. Rab1 a3 18. Qd3 Bd7 19. Bd2 axb2 20. Rxb2 Nxd5 21. Rxb5 Nxc3 22. Rxb7 Bb5 23. Qe3 Nd5 24. Qf2 Qc6 25. Rxb5 Qxb5 26. Nd4 Qb2 27. e3 Rxa2 28. f4 Qxd2 29. Bxd5 Qxf2+ 30. Rxf2 Rxf2 31. Kxf2 Bxd4 32. exd4 Rb8 33. Bf3 Rb2+ 34. Be2 e6 35. Ke3 Kg7 36. h3 Rb3+ 37. Kf2 Kf6 38. h4 Ke7 39. Bc4 Rb4 0-1

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2007.05.19"]
[Round "5"]
[White "Piotrowski, Christopher"]
[Black "Peschke, Uwe"]
[Result "0-1"]
[ECO "A11"]
[BlackElo "2173"]
[PlyCount "66"]
[EventDate "2007.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. b3 g6 5. Nf3 Bg7 6. Bb2 0-0 7. 0-0 Bf5 8. d3 a5 9. Nbd2 Na6 10. Rc1 Qb6 11. Bd4 Qd8 12. Qc2 Qd6 13. Qb2 Bg4 14. e4 Nh5 15. Bxg7 Nxg7 16. Ne5 Be6 17. d4 f6 18. c5 Nxc5 19. Nxg6 Nd3 20. Qb1 Nxc1 21. Nxf8 Ne2+ 22. Kh1 Nxd4 23. Nxe6 Ngxe6 24. f4 Qb4 25. Rd1 Ne2 26. Qd3 Nc3 27. Rc1 Nxe4 28. Nxe4 dxe4 29. Bxe4 Rd8 30. Bxh7+ Kh8 31. Qf5 Qd2 32. Rf1 Qe2 33. Qh3 Kg7 0-1

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2007.05.19"]
[Round "6"]
[White "Schoeffler, Helmut"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2150"]
[PlyCount "83"]
[EventDate "2007.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Be2 b5 9. 0-0 Qb6 10. f5 cxd4 11. fxe6 fxe6 12. Nxd4 Nxd4 13. Bxd4 Bc5 14. Bxc5 Qxc5+ 15. Kh1 Nxe5 16. Bh5+ g6 17. Re1 Nc4 18. Bf3 0-0 19. b4 Qd6 20. a4 Rb8 21. axb5 axb5 22. Ra7 Rb7 23. Rxb7 Bxb7 24. Nxb5 Qb6 25. Nc3 Qxb4 26. Qd4 Qd6 27. Qa7 Qf4 28. Rb1 Ba8 29. Qe7 Nd2 30. Qxe6+ Kg7 31. Ne2 Qc7 32. Ra1 Nxf3 33. gxf3 Qf7 34. Nd4 Qf4 35. Ra7+ Kh8 36. Qe7 Qh6 37. Qe5+ Kg8 38. Rxa8 Qc1+ 39. Kg2 Qd2+ 40. Kg3 Rxa8 41. Qxd5+ Kg7 42. Ne6+ 1-0

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2007.05.18"]
[Round "4"]
[White "Bauer, Norbert"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "2134"]
[PlyCount "66"]
[EventDate "2007.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Bd3 Nxd2 9. Qxd2 c5 10. f4 Nc6 11. Nf3 Qa5 12. c4 Qxd2+ 13. Kxd2 dxc4 14. Bxc4 Nxd4 15. Nxd4 cxd4 16. Kd3 Bd7 17. Rhb1 Bc6 18. Bb5 Bxb5+ 19. Rxb5 0-0-0 20. Rab1 Rd7 21. R1b4 Rhd8 22. Rc5+ Rc7 23. Rxc7+ Kxc7 24. Rxd4 Rxd4+ 25. Kxd4 Kb6 26. Kc4 Kc6 27. a4 a5 28. g4 g6 29. h4 h5 30. g5 b6 31. c3 b5+ 32. Kb3 Kc5 33. Ka3 bxa4 0-1

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2007.05.17"]
[Round "2"]
[White "Piotrowski, Christopher"]
[Black "Cusnariov, Nikolai"]
[Result "1-0"]
[ECO "B52"]
[BlackElo "2151"]
[PlyCount "47"]
[EventDate "2007.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Qg4 6. 0-0 Qxe4 7. d4 cxd4 8. Re1 Qc6 9. Nxd4 Qd7 10. Nc3 Nc6 11. Ndb5 e6 12. Bf4 0-0-0 13. Qa4 a6 14. Rad1 e5 15. Nd5 Qf5 16. Be3 Nf6 17. Na7+ Nxa7 18. Bxa7 Nxd5 19. cxd5 Rd7 20. Qa5 Rc7 21. Rc1 Qd7 22. Be3 Rc5 23. b4 Qc7 24. Qa4 1-0

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2007.05.17"]
[Round "3"]
[White "Richter, Michael"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2396"]
[PlyCount "91"]
[EventDate "2007.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e3 d6 4. Nf3 h6 5. Bh4 g5 6. Bg3 Nh5 7. Nbd2 Nc6 8. Bd3 Bg7 9. c3 f5 10. Ne5 dxe5 11. Qxh5+ Kf8 12. 0-0-0 Bd7 13. h3 Qe7 14. Rhe1 Qf7 15. Qxf7+ Kxf7 16. dxe5 Bxe5 17. f4 gxf4 18. exf4 Rhg8 19. fxe5 Rxg3 20. Nb3 Rd8 21. Bxf5 Rxg2 22. Be4 Rgg8 23. Nc5 Bc8 24. Bxc6 bxc6 25. Rf1+ Ke7 26. Rxd8 Rxd8 27. b4 Rf8 28. Rxf8 Kxf8 29. h4 h5 30. Kd2 Kf7 31. Ke3 Kg6 32. Kf4 Kh6 33. Ke4 Kg6 34. Kf4 Kh6 35. a3 Kg6 36. Ke4 Kh6 37. Kf4 Kg6 38. a4 Kh6 39. Ke4 Kg6 40. Kf4 Kh6 41. Ke4 Kg6 42. Nd3 Bd7 43. Nf4+ Kh6 44. Kd4 Kg7 45. Kc5 Kh6 46. a5 1-0

[Event "Berlin Unicorn op"]
[Site "Berlin"]
[Date "2007.05.16"]
[Round "1"]
[White "Piotrowski, Christopher"]
[Black "Poeltelt, Helmut"]
[Result "1-0"]
[ECO "D79"]
[BlackElo "1550"]
[PlyCount "57"]
[EventDate "2007.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d5 6. c4 c6 7. Nc3 Nbd7 8. cxd5 cxd5 9. Bf4 a6 10. Qb3 Nb6 11. Ne5 e6 12. Rfd1 Nh5 13. Be3 f5 14. f4 Nf6 15. h3 Re8 16. g4 Nfd7 17. Nxd5 Bxe5 18. Nxb6 Qxb6 19. dxe5 Qxb3 20. axb3 Rd8 21. Rac1 Kf8 22. Rc7 Ke8 23. Bf2 a5 24. Bh4 Ra6 25. Bxb7 Bxb7 26. Rxb7 Rc8 27. Rbxd7 Rac6 28. Rxh7 Rc2 29. Rh8+ 1-0

[Event "Oberliga Nord O 0506"]
[Site "Germany"]
[Date "2006.04.02"]
[Round "9.8"]
[White "Eisentraeger, Dieter"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "C11"]
[PlyCount "58"]
[EventDate "2005.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]
[WhiteTeam "Friesen Lichtenberg"]
[BlackTeam "Koenig Tegel II"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. g3 Qb6 10. Bg2 Bb7 11. Ne2 Rc8 12. 0-0 Na5 13. b3 Be7 14. g4 Nc6 15. Rad1 0-0 16. Kh1 f6 17. c4 fxe5 18. cxd5 Nxd4 19. dxe6 Qxe6 20. f5 Qd6 21. b4 Nf6 22. bxc5 Qxc5 23. Nexd4 exd4 24. Nxd4 Bxg2+ 25. Qxg2 Qc3 26. Bg1 Rfd8 27. g5 Ne8 28. f6 Bc5 29. f7+ Kh8 1-0

[Event "Oberliga Nord O 0506"]
[Site "Germany"]
[Date "2006.03.12"]
[Round "8.8"]
[White "Piotrowski, Christopher"]
[Black "Gieritz, Dietmar"]
[Result "0-1"]
[ECO "C06"]
[BlackElo "2175"]
[PlyCount "78"]
[EventDate "2005.10.23"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]
[WhiteTeam "Koenig Tegel II"]
[BlackTeam "Oberschoeneweide"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Qb6 7. Ngf3 cxd4 8. cxd4 Nc6 9. 0-0 Nxd4 10. Nxd4 Qxd4 11. Nf3 Qg4 12. h3 Qh5 13. Qa4 Be7 14. Kh2 f5 15. exf6 gxf6 16. Nd4 0-0 17. Nxe6 Qe5+ 18. Qf4 Bd6 19. Qxe5 Nxe5 20. Bxh7+ Kxh7 21. Nxf8+ Kg7 22. Rd1 Nc6+ 23. f4 d4 24. Be3 Kxf8 25. g3 Bc5 26. b4 Bb6 27. Bf2 a6 28. g4 Be6 29. a3 Kf7 30. Kg3 Rd8 31. h4 Rg8 32. g5 Ne7 33. Kf3 Nf5 34. Rg1 Bd5+ 35. Kg4 Be6 36. Rae1 Nd6+ 37. Kf3 Bd5+ 38. Ke2 Ne4 39. g6+ Kg7 0-1

[Event "GER-chT U20"]
[Site "Berlin"]
[Date "2005.12.30"]
[Round "7.4"]
[White "Luo, Xinping"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "C12"]
[WhiteElo "1824"]
[BlackElo "1939"]
[PlyCount "95"]
[EventDate "2005.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Heilbronn U20"]
[BlackTeam "Koenig Tegel U20"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Be3 Ne4 7. Qg4 Kf8 8. a3 Bxc3+ 9. bxc3 c5 10. Bd3 Qa5 11. Ne2 cxd4 12. Bxd4 Nc5 13. Bxc5+ Qxc5 14. 0-0 Nc6 15. Qg3 Na5 16. Rad1 Bd7 17. h4 Nc4 18. Bxc4 Qxc4 19. Nd4 Rc8 20. Rd3 Rg8 21. h5 Ke7 22. f4 Qc5 23. Qh4+ Ke8 24. Kh2 Qe7 25. Qh3 Kd8 26. Qg3 Kc7 27. f5 Kb8 28. fxe6 Bxe6 29. Nf5 Bxf5 30. Rxf5 Qe6 31. Qf4 Rc4 32. Rd4 Rf8 33. Rxc4 dxc4 34. Qe4 Rd8 35. Rf4 b5 36. a4 a6 37. axb5 axb5 38. Rf1 Re8 39. Re1 Qe7 40. g3 Qg5 41. Ra1 Rxe5 42. Ra8+ Kc7 43. Ra7+ Kd6 44. Ra6+ Ke7 45. Qb7+ Kf8 46. Ra8+ Re8 47. Rxe8+ Kxe8 48. Qb8+ 1/2-1/2

[Event "GER-chT U20"]
[Site "Berlin"]
[Date "2005.12.29"]
[Round "6.4"]
[White "Piotrowski, Christopher"]
[Black "Mazarov, Juergen"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "1939"]
[BlackElo "1999"]
[PlyCount "82"]
[EventDate "2005.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Koenig Tegel U20"]
[BlackTeam "Bochum SG 31 U20"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. g3 dxc4 5. Bg2 c5 6. Ne5 cxd4 7. Qa4+ Nbd7 8. Nd2 Be7 9. Ndxc4 0-0 10. Bd2 Nc5 11. Qc2 Nd5 12. Ba5 b6 13. Nc6 Qc7 14. Nxe7+ Qxe7 15. Bd2 Bb7 16. 0-0 Rac8 17. b4 Na6 18. Qb3 Naxb4 19. Bxb4 Qxb4 20. Qxb4 Nxb4 21. Nxb6 axb6 22. Bxb7 Rc2 23. Be4 Rfc8 24. a3 Na6 25. Rfd1 e5 26. Rab1 Nc5 27. Bf5 Rb8 28. Rb5 g6 29. Bh3 Ra2 30. Rdb1 Ra8 31. Rxb6 R8xa3 32. R6b5 Ra1 33. f3 Rxb1+ 34. Rxb1 Ra2 35. Kf1 Rc2 36. Rd1 Na4 37. Ke1 Nc3 38. Rd2 Rc1+ 39. Kf2 Nd1+ 40. Ke1 Ne3+ 41. Kf2 Rh1 0-1

[Event "GER-chT U20"]
[Site "Berlin"]
[Date "2005.12.29"]
[Round "5.4"]
[White "Schaaf, Robert"]
[Black "Piotrowski, Christopher"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2113"]
[BlackElo "1939"]
[PlyCount "61"]
[EventDate "2005.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Baden-Baden U20"]
[BlackTeam "Koenig Tegel U20"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 Bd7 7. b4 cxd4 8. cxd4 Rc8 9. Be3 Nh6 10. Be2 Nf5 11. 0-0 Be7 12. Qd2 Nxe3 13. fxe3 f6 14. exf6 Bxf6 15. Nc3 0-0 16. Rac1 Be8 17. Na4 Qd8 18. Nc5 Qe7 19. Nd3 Bg6 20. Nf4 Be4 21. h4 Bxh4 22. Nxh4 Qxh4 23. Nxe6 Qg3 24. Bd3 Rxf1+ 25. Bxf1 Re8 26. Nf4 Ne7 27. Bd3 Nf5 28. Bxe4 Rxe4 29. Nxd5 Rh4 30. Nf4 Nxe3 31. Qa2+ 1-0

[Event "GER-chT U20"]
[Site "Berlin"]
[Date "2005.12.28"]
[Round "3.4"]
[White "Stejskal, Janina Maria"]
[Black "Piotrowski, Christopher"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2045"]
[BlackElo "1939"]
[PlyCount "70"]
[EventDate "2005.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Hamburger SK U20"]
[BlackTeam "Koenig Tegel U20"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d3 c5 3. Nf3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 Nge7 7. Re1 d6 8. Nbd2 0-0 9. Nf1 Rb8 10. h4 b5 11. N1h2 e5 12. Be3 b4 13. Qc1 Nd4 14. Nxd4 cxd4 15. Bh6 Qc7 16. Bxg7 Kxg7 17. g4 Bd7 18. h5 f6 19. Qd2 g5 20. Rec1 Rfc8 21. Bh3 a5 22. Nf3 a4 23. Ne1 a3 24. b3 Nc6 25. Kh2 Nd8 26. Kg3 Ne6 27. Rab1 Nf4 28. f3 Qc3 29. Qd1 d5 30. Bf1 Qc7 31. Be2 f5 32. gxf5 Nxh5+ 33. Kf2 Nf4 34. Ng2 Qd6 35. Qg1 Nh3+ 0-1

[Event "GER-chT U20"]
[Site "Berlin"]
[Date "2005.12.28"]
[Round "4.3"]
[White "Strache, Michael"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "C12"]
[WhiteElo "2066"]
[BlackElo "1939"]
[PlyCount "48"]
[EventDate "2005.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Sangerhausen U20"]
[BlackTeam "Koenig Tegel U20"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. exf6 hxg5 7. fxg7 Rg8 8. h4 gxh4 9. Nf3 Nc6 10. Qd3 Qf6 11. Rxh4 Qxg7 12. 0-0-0 Bd7 13. Rh7 Qf6 14. Qe3 0-0-0 15. Ne5 Rg7 16. Rh6 Qe7 17. Nxc6 Bxc6 18. g3 Rdg8 19. Bh3 Qg5 20. Qxg5 Rxg5 21. Ne2 R5g6 22. Rh7 R6g7 23. Rh5 Rg5 24. Rh7 R5g7 1/2-1/2

[Event "GER-chT U20"]
[Site "Berlin"]
[Date "2005.12.27"]
[Round "2.4"]
[White "Buckan, Jens"]
[Black "Piotrowski, Christopher"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2107"]
[BlackElo "1939"]
[PlyCount "157"]
[EventDate "2005.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Erfurt Medizin U20"]
[BlackTeam "Koenig Tegel U20"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. exd5 Nxd5 5. Nxd5 exd5 6. Bf4 Bd6 7. Qd2 Bxf4 8. Qxf4 Qe7+ 9. Be2 Qb4+ 10. Kf1 Nc6 11. Nf3 Be6 12. Rb1 0-0-0 13. c3 Qd6 14. Qxd6 Rxd6 15. Ne5 Nxe5 16. dxe5 Rb6 17. Bd3 d4 18. c4 c5 19. f4 g6 20. Kf2 Bf5 21. Rhd1 a5 22. Bxf5+ gxf5 23. Rd3 Kd7 24. Rh3 h5 25. Rg3 Rb4 26. b3 a4 27. Rh3 h4 28. Rb2 Rh6 29. Ke1 Ke7 30. Kd1 b5 31. cxb5 c4 32. Rc2 axb3 33. axb3 c3 34. Rd3 Rb6 35. Ra2 R6xb5 36. Kc2 Ke6 37. Ra3 Kd5 38. Rh3 Ke4 39. Rxh4 Rc5 40. Rh3 Kxf4 41. Rf3+ Ke4 42. Ra1 Rxe5 43. Raf1 Rb8 44. Rf4+ Kd5 45. Rxf5 Ra8 46. Kd3 Ra2 47. Rxe5+ Kxe5 48. Kc4 Rd2 49. Re1+ Kd6 50. Rc1 c2 51. b4 d3 52. Kc3 Rd1 53. Kb2 d2 54. Rxc2 Rb1+ 55. Kxb1 d1Q+ 56. Kb2 Qd4+ 57. Kb3 Qd3+ 58. Kb2 Ke5 59. Rc3 Qd2+ 60. Kb3 Qd1+ 61. Ka3 Kd4 62. Rc5 Qd3+ 63. Ka4 Qa6+ 64. Kb3 f5 65. g3 Qe2 66. Rc2 Qd1 67. Kb2 Qd3 68. Rc5 Qd2+ 69. Kb3 Qxh2 70. Rxf5 Qxg3+ 71. Ka4 Qd3 72. Rc5 Qd1+ 73. Ka5 Qa1+ 74. Kb5 Qa2 75. Kb6 Qa4 76. b5 Qa3 77. Rc6 Kd5 78. Rc7 Qb4 79. Rc6 1/2-1/2

[Event "GER-chT U20"]
[Site "Berlin"]
[Date "2005.12.27"]
[Round "1.4"]
[White "Piotrowski, Christopher"]
[Black "Senay, Baris"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "1939"]
[BlackElo "1852"]
[PlyCount "96"]
[EventDate "2005.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Koenig Tegel U20"]
[BlackTeam "Porz SG U20"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. c4 c5 2. Nf3 e6 3. g3 Nf6 4. Nc3 b6 5. Bg2 Bb7 6. 0-0 Be7 7. d4 cxd4 8. Qxd4 Nc6 9. Qf4 Qb8 10. Qxb8+ Rxb8 11. Bf4 d6 12. Rfd1 e5 13. Bg5 Na5 14. b3 Ne4 15. Nxe4 Bxe4 16. Bxe7 Kxe7 17. Nh4 Bxg2 18. Nxg2 Rhc8 19. Ne3 Ke6 20. g4 g6 21. Rd5 f5 22. Rad1 Nb7 23. gxf5+ gxf5 24. f4 Rd8 25. Rf1 Rg8+ 26. Kh1 Rbf8 27. Rfd1 Rd8 28. b4 h6 29. fxe5 f4 30. Nc2 dxe5 31. Na3 Nd6 32. h3 a6 33. b5 Rg3 34. c5 bxc5 35. Nc4 Rxh3+ 36. Kg2 Rg3+ 37. Kh2 Nxc4 38. Rxd8 axb5 39. Rc8 Ne3 40. Rdd8 Rg2+ 41. Kh3 Rg3+ 42. Kh2 Rg2+ 43. Kh3 Rxe2 44. Rxc5 Kf5 45. Rf8+ Ke4 46. Re8 Kf3 47. Rcxe5 Re1 48. Rxe3+ Rxe3 0-1

