[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.27"]
[Round "8"]
[White "Dohmes, Swidbert"]
[Black "Sondermann, Jonathan"]
[Result "0-1"]
[ECO "B45"]
[WhiteElo "1764"]
[BlackElo "1806"]
[PlyCount "28"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be2 Bb4 7. Nxc6 bxc6 8. Bg5 0-0 9. 0-0 h6 10. Bxf6 Qxf6 11. Na4 d5 12. c3 Bd6 13. Bf3 Rd8 14. Qc2 Qf4 0-1

[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.27"]
[Round "9"]
[White "Sondermann, Jonathan"]
[Black "Haftmann, Rainer"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1806"]
[BlackElo "1718"]
[PlyCount "91"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Be7 5. 0-0 d6 6. Nxd4 Nxd4 7. Qxd4 Nf6 8. Nc3 0-0 9. Bd2 c6 10. Rae1 b5 11. Bd3 Qb6 12. Qe3 Qxe3 13. Bxe3 Ng4 14. Bd2 Ne5 15. f4 Nxd3 16. cxd3 Bd8 17. e5 Bb6+ 18. Be3 dxe5 19. fxe5 Be6 20. a3 Rad8 21. Bxb6 axb6 22. Rd1 Rd4 23. Kf2 f6 24. exf6 Rxf6+ 25. Ke3 Rxf1 26. Rxf1 Rg4 27. g3 b4 28. Ne4 bxa3 29. bxa3 Bd5 30. a4 Bxe4 31. dxe4 Rg6 32. Kd4 Rf6 33. Rb1 c5+ 34. Kd5 Kf7 35. e5 Rf2 36. Rxb6 Rxh2 37. a5 Rg2 38. Rb7+ Kg6 39. a6 Rxg3 40. a7 Ra3 41. e6 h5 42. e7 Kf7 43. Kd6 g5 44. Kd7 Rd3+ 45. Kc8 Ra3 46. Kd8 1-0

[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.26"]
[Round "6"]
[White "Pohle, Saskia"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "1752"]
[BlackElo "1806"]
[PlyCount "81"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bc4 Bb4 7. f3 Qb6 8. Nxc6 Qxc6 9. Qd3 0-0 10. Bd2 a6 11. a4 b5 12. Bb3 Bb7 13. 0-0 Bxc3 14. Bxc3 Rfd8 15. Rfd1 Rac8 16. Kh1 d6 17. Qe3 Nd7 18. Qd4 Nf6 19. axb5 axb5 20. e5 dxe5 21. Qxe5 Rd7 22. Re1 Qb6 23. Qg3 Ne8 24. Re5 b4 25. Be1 Rcd8 26. Bf2 Rd1+ 27. Re1 Rxe1+ 28. Rxe1 Qb5 29. h3 Nf6 30. Qc7 Rc8 31. Qd6 Nd5 32. Bd4 Kh8 33. Qg3 Nf6 34. Qf4 Nd5 35. Qxf7 Rg8 36. Rxe6 Bc6 37. Rh6 Ne7 38. Qxe7 Qf1+ 39. Kh2 Bxf3 40. Bxg7+ Rxg7 41. Qf8+ 1-0

[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.26"]
[Round "7"]
[White "Sondermann, Jonathan"]
[Black "Hoelss, Manuel"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "1806"]
[BlackElo "1747"]
[PlyCount "48"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bb4+ 5. c3 dxc3 6. bxc3 Ba5 7. 0-0 Nf6 8. e5 d5 9. exf6 dxc4 10. Qe2+ Be6 11. fxg7 Rg8 12. Bg5 Qd5 13. Rd1 Qf5 14. Bh6 Qg6 15. Qe3 Bb6 16. Qf4 Qc2 17. Nbd2 0-0-0 18. Ng5 Bd5 19. Rac1 Qg6 20. Nge4 Ne7 21. Ng3 Rd6 22. Nde4 Re6 23. Re1 Qxh6 24. Qxf7 Qxg7 0-1

[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.25"]
[Round "4"]
[White "Modi, Sonia"]
[Black "Sondermann, Jonathan"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1502"]
[BlackElo "1806"]
[PlyCount "63"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 e5 6. e3 Nge7 7. d3 0-0 8. 0-0 d6 9. a3 Rb8 10. Rb1 f5 11. Qc2 a5 12. Nd5 Be6 13. Ng5 Bd7 14. Bd2 h6 15. Nf3 Nxd5 16. cxd5 Ne7 17. b4 cxb4 18. axb4 Rc8 19. Qa2 Bb5 20. Rb3 a4 21. Ra3 e4 22. Nd4 Bxd4 23. exd4 Bxd3 24. Rc1 b5 25. Bxh6 Rxc1+ 26. Bxc1 Qc7 27. Bh6 Kh7 28. Qd2 Rc8 29. f3 Qc2 30. Ra2 Qb1+ 31. Kf2 Nxd5 32. Bf1 0-1

[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.25"]
[Round "5"]
[White "Sondermann, Jonathan"]
[Black "Reichelt, Florian"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "1806"]
[BlackElo "1884"]
[PlyCount "72"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 g6 6. 0-0 Bg7 7. Nc3 Nxc3 8. dxc3 0-0 9. Qb3 Nc6 10. Be3 b6 11. Rfd1 Qc7 12. Bf4 Qb7 13. Be5 Be6 14. Qa4 f6 15. Nd4 b5 16. Qxb5 Qxb5 17. Nxb5 Nxe5 18. Bxa8 Rxa8 19. Nc7 Rb8 20. Nxe6 Rxb2 21. Nxg7 Kxg7 22. Kf1 Kf7 23. Ke1 Ke6 24. Rdb1 Rc2 25. Rb3 Nc4 26. a4 Kd6 27. a5 a6 28. e4 Ke5 29. Ra4 Kxe4 30. Rb7 Rxc3 31. Rxe7+ Kf3 32. Ra1 Rc2 33. Re6 f5 34. Rxa6 Rxf2 35. Rc1 Ne3 36. Rc3 Re2# 0-1

[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.24"]
[Round "3"]
[White "Sondermann, Jonathan"]
[Black "Wohlrabe, Joerg"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "1806"]
[BlackElo "1696"]
[PlyCount "65"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. d4 d6 8. Qc2 Re8 9. e4 Nfd7 10. e5 Nf8 11. d5 exd5 12. cxd5 dxe5 13. Nxe5 Bd6 14. Nc4 Na6 15. Nxd6 cxd6 16. Be3 Rc8 17. a3 Nc5 18. b4 Ncd7 19. Rac1 Ne5 20. Qa4 a6 21. b5 Ra8 22. Rfd1 Nfd7 23. bxa6 Rxa6 24. Qb4 Nc5 25. Bf1 Ra7 26. Rb1 Ned7 27. Bf4 Qf6 28. Bb5 Rc8 29. Bxd7 Nxd7 30. Nb5 Bxd5 31. Rxd5 Ra5 32. Qxd6 Rxb5 33. Rdxb5 1-0

[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.24"]
[Round "2"]
[White "Waligora, Franciszek"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "1694"]
[BlackElo "1806"]
[PlyCount "61"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Be7 10. c4 Bb4+ 11. Ke2 Ba6 12. Kf3 Nb6 13. c5 Nc4 14. Bxc4 Bxc4 15. Nd6+ Ke7 16. Nxc4 Bxc5 17. Be3 Bxe3 18. Nxe3 Qb7 19. Qd6+ Ke8 20. Rad1 c5+ 21. Kf2 Qxb2+ 22. Rd2 Qb7 23. Rb1 Qc8 24. f5 h5 25. f6 gxf6 26. exf6 Qd8 27. Nd5 Rc8 28. Nc7+ Rxc7 29. Rb8 Rh6 30. Rxd8+ Kxd8 31. Qf8# 1-0

[Event "Hofheim Spring op-B 7th"]
[Site "Hofheim"]
[Date "2019.04.23"]
[Round "1"]
[White "Sondermann, Jonathan"]
[Black "Fischer, Lutz"]
[Result "1-0"]
[ECO "D33"]
[WhiteElo "1806"]
[BlackElo "1675"]
[PlyCount "45"]
[EventDate "2019.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 e6 3. Nc3 Nf6 4. g3 d5 5. cxd5 exd5 6. d4 Nc6 7. Bg2 h6 8. 0-0 Be6 9. Qa4 Qa5 10. Qxa5 Nxa5 11. Bf4 a6 12. Rac1 c4 13. Ne5 g5 14. Be3 Nc6 15. f4 Nxe5 16. dxe5 gxf4 17. gxf4 Ng4 18. Bd4 Rg8 19. f5 Bd7 20. h3 Nxe5 21. Bxe5 Bc5+ 22. Kh1 d4 23. Nd5 1-0

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2019.03.03"]
[Round "9.2"]
[White "Sondermann, Jonathan"]
[Black "Wirth, Tobias"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "1757"]
[PlyCount "77"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Borussia Lichtenberg"]
[BlackTeam "Anhalt"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nb6 5. Nc3 Nc6 6. d4 e6 7. Be2 Bb4 8. 0-0 0-0 9. Bf4 Bd6 10. e5 Be7 11. Bd3 Nb4 12. Be4 N4d5 13. Bg3 c6 14. Nd2 Nc7 15. Nb3 Nbd5 16. f4 b6 17. Rf3 Bb7 18. Bf2 f6 19. Rh3 f5 20. Bxd5 Nxd5 21. Nxd5 cxd5 22. Qh5 h6 23. Qg6 Qe8 24. Qxe6+ Kh7 25. Rc1 Bd8 26. Qd6 Rf7 27. e6 Qf8 28. Qe5 Re7 29. Bh4 Re8 30. Bxd8 Raxd8 31. Rc7 Re7 32. Rxe7 Qxe7 33. Qxf5+ g6 34. Qe5 Rd6 35. f5 gxf5 36. Qxf5+ Kg7 37. Rg3+ Kh8 38. Qg6 Qf8 39. e7 1-0

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2019.03.02"]
[Round "8.3"]
[White "Sondermann, Jonathan"]
[Black "Tham, Minh"]
[Result "1-0"]
[ECO "C22"]
[WhiteElo "1757"]
[BlackElo "1926"]
[PlyCount "43"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Borussia Lichtenberg"]
[BlackTeam "Weisse Dame"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 d6 5. Nc3 Nf6 6. Bd2 Be7 7. 0-0-0 Ng4 8. Qe1 Nge5 9. f4 Ng6 10. Nf3 Bg4 11. Qg3 Qd7 12. f5 Nge5 13. Bb5 Bxf3 14. gxf3 a6 15. Bf1 Nd4 16. Bf4 Ndc6 17. Be3 Na5 18. Bd4 Nac6 19. Bf2 Na5 20. b4 Nac6 21. f4 Bf6 22. Nd5 1-0

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2019.02.23"]
[Round "7.2"]
[White "Sondermann, Jonathan"]
[Black "Groebel, Aaron"]
[Result "0-1"]
[ECO "E67"]
[WhiteElo "1757"]
[BlackElo "2064"]
[PlyCount "90"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Borussia Lichtenberg"]
[BlackTeam "Halle USV"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. d4 0-0 6. 0-0 Nbd7 7. Nc3 e5 8. d5 h6 9. e4 Kh7 10. Ne1 Nc5 11. b4 Ncd7 12. Nd3 Ng8 13. Qb3 f5 14. f3 Ndf6 15. Be3 Nh5 16. Bf2 f4 17. g4 Nhf6 18. c5 Nxg4 19. fxg4 Bxg4 20. h3 Bh5 21. Kh2 Bf6 22. Ne1 g5 23. Bf3 Bxf3 24. Nxf3 h5 25. Rg1 Nh6 26. Nd2 g4 27. hxg4 hxg4 28. Kg2 Bh4 29. Rh1 f3+ 30. Kg1 Bxf2+ 31. Kxf2 g3+ 32. Ke3 Qg5+ 33. Kd3 g2 34. Rh3 g1Q 35. Rxg1 Qxg1 36. Qd1 f2 37. Qf1 Rf6 38. Ne2 Qxf1 39. Nxf1 Raf8 40. Neg3 Kg6 41. Ke2 dxc5 42. bxc5 Ra6 43. Ne3 Rxa2+ 44. Kf1 Ra1+ 45. Kg2 Rg1+ 0-1

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2019.01.26"]
[Round "6.3"]
[White "Bress, Aaron"]
[Black "Sondermann, Jonathan"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1760"]
[BlackElo "1757"]
[PlyCount "96"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Torgelow"]
[BlackTeam "Borussia Lichtenberg"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Nc3 Bg7 5. Bg2 Nf6 6. 0-0 0-0 7. d3 d6 8. h3 a6 9. a4 Rb8 10. Re1 Nd7 11. Nh2 b5 12. axb5 axb5 13. Ng4 b4 14. Nd5 e6 15. Nde3 Nb6 16. Nf1 Bb7 17. Bh6 Bxb2 18. Bxf8 Qxf8 19. Ra2 Bc3 20. Nd2 f5 21. exf5 exf5 22. Ne3 Qf7 23. Nec4 Nxc4 24. dxc4 Ne5 25. Ra7 Bxd2 26. Rxe5 dxe5 27. Qxd2 e4 28. Qd6 Rc8 29. f3 e3 30. f4 e2 31. Kf2 Qe8 32. Bd5+ Bxd5 33. Qxd5+ Kh8 34. Qd2 Rd8 35. Qxe2 Qxe2+ 36. Kxe2 Rd4 37. Rc7 Rxc4 38. Kd3 Rc3+ 39. Kd2 Rxg3 40. Rxc5 b3 41. cxb3 Rxb3 42. Rc3 Rxc3 43. Kxc3 Kg7 44. Kd4 Kh6 45. Ke3 Kh5 46. Kf3 Kh4 47. Kg2 h6 48. Kh2 g5 0-1

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2019.01.12"]
[Round "5.3"]
[White "Sondermann, Jonathan"]
[Black "Wagner, Benjamin"]
[Result "0-1"]
[ECO "E63"]
[WhiteElo "1757"]
[BlackElo "2051"]
[PlyCount "34"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Borussia Lichtenberg"]
[BlackTeam "Magdeburg Aufbau Elbe"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. d4 Nc6 7. Nc3 a6 8. e4 Bg4 9. h3 Bxf3 10. Bxf3 e5 11. d5 Nd4 12. Bg2 Nd7 13. Be3 c5 14. Qd2 Rb8 15. b3 b5 16. Rab1 Qa5 17. Qd3 Qxc3 0-1

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2018.12.01"]
[Round "4.3"]
[White "Andresen, Marc"]
[Black "Sondermann, Jonathan"]
[Result "0-1"]
[ECO "A39"]
[WhiteElo "1428"]
[BlackElo "1757"]
[PlyCount "106"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Falkensee Caissa"]
[BlackTeam "Borussia Lichtenberg"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. 0-0 Nf6 5. c4 0-0 6. Nc3 Nc6 7. d4 cxd4 8. Nxd4 Qb6 9. Nc2 d6 10. Rb1 Bf5 11. h3 Bxc2 12. Qxc2 Rac8 13. e4 Nd7 14. Be3 Qa6 15. Qa4 Qxa4 16. Nxa4 Nb4 17. a3 Nc2 18. Bxa7 Rxc4 19. Nb6 Nxb6 20. Bxb6 Rc6 21. Ba5 Ra8 22. Bc3 Bxc3 23. bxc3 Rxc3 24. Rxb7 Kf8 25. Rc1 Raxa3 26. Rb2 Nd4 27. Rxc3 Rxc3 28. h4 Nf3+ 29. Bxf3 Rxf3 30. Kg2 Rc3 31. Rb8+ Kg7 32. g4 h5 33. gxh5 gxh5 34. Re8 e6 35. Rd8 Rd3 36. f3 d5 37. exd5 Rxd5 38. Rc8 Kf6 39. Kg3 Rf5 40. Rc4 Ke7 41. Rd4 e5 42. Re4 Ke6 43. f4 Rxf4 44. Rxf4 exf4+ 45. Kxf4 f5 46. Ke3 Ke5 47. Kf3 f4 48. Ke2 Ke4 49. Kf2 f3 50. Kf1 Kf4 51. Kf2 Kg4 52. Kf1 Kxh4 53. Kf2 Kg4 0-1

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2018.11.03"]
[Round "3.3"]
[White "Sondermann, Jonathan"]
[Black "Henning, Marvin"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "1757"]
[BlackElo "1972"]
[PlyCount "99"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Borussia Lichtenberg"]
[BlackTeam "Reideburg 90 Halle"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 d6 2. c4 e5 3. d4 e4 4. Ng5 f5 5. g3 h6 6. Nh3 g5 7. b3 Bg7 8. Bb2 Nd7 9. f3 Ngf6 10. Nf2 0-0 11. Bg2 Qe7 12. 0-0 b6 13. Nc3 Bb7 14. Qc2 Rae8 15. d5 e3 16. Nd3 a6 17. a4 h5 18. a5 Bc8 19. Nb4 Nb8 20. axb6 cxb6 21. Na4 h4 22. gxh4 g4 23. Nxb6 g3 24. Nxc8 gxh2+ 25. Kxh2 Rxc8 26. Qxf5 Nh5 27. Qxh5 Bxb2 28. Qg6+ Kh8 29. Qh6+ Qh7 30. Qxh7+ Kxh7 31. Rab1 Be5+ 32. Kh3 Nd7 33. Nd3 Kg7 34. Nxe5 dxe5 35. Kg3 Nf6 36. Bh3 Nh5+ 37. Kh2 Rb8 38. Rg1+ Kh6 39. Rg5 e4 40. Bg4 Nf4 41. fxe4 Rg8 42. Rxg8 Rxg8 43. Rg1 Rb8 44. d6 Ng6 45. d7 Ne5 46. Rd1 Rd8 47. Bf5 Kh5 48. Kh3 a5 49. Rd5 Nc6 50. Bg4+ 1-0

[Event "Berlin Lichtenrade op 14th"]
[Site "Berlin"]
[Date "2018.10.27"]
[Round "1"]
[White "Stets, Dmitry"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "B78"]
[WhiteElo "2373"]
[BlackElo "1762"]
[PlyCount "71"]
[EventDate "2018.10.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 d6 7. Bc4 Nf6 8. f3 0-0 9. Bb3 Bd7 10. h4 Rc8 11. Qd2 h5 12. 0-0-0 Ne5 13. Bh6 Kh7 14. Bxg7 Kxg7 15. Kb1 Nc4 16. Bxc4 Rxc4 17. Nde2 Rc5 18. Nf4 b5 19. Nd3 Rc4 20. e5 dxe5 21. Nxe5 Rc7 22. Nd5 Nxd5 23. Qxd5 Qc8 24. Nxd7 Rd8 25. Qe5+ Kg8 26. Nf6+ exf6 27. Qxf6 Rcd7 28. Rxd7 Qxd7 29. a3 Qd2 30. g4 Rc8 31. Rc1 hxg4 32. fxg4 Rc4 33. h5 Rxg4 34. Rf1 Qh6 35. Qxf7+ Kh8 36. Qe8+ 1-0

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2018.10.13"]
[Round "2.2"]
[White "Sondermann, Jonathan"]
[Black "Schnabel, Bennett"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1757"]
[BlackElo "2081"]
[PlyCount "44"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Borussia Lichtenberg"]
[BlackTeam "Berlin Mattnetz"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 f5 2. d3 d6 3. g3 Nf6 4. Bg2 e5 5. Nc3 g6 6. 0-0 Bg7 7. Bg5 h6 8. Bxf6 Bxf6 9. Nd5 Bg7 10. Nh4 Kf7 11. e4 f4 12. Kh1 c6 13. Nc3 Bf6 14. Nf3 g5 15. Nd2 h5 16. f3 h4 17. gxh4 Rxh4 18. Rf2 Qh8 19. Qg1 Be6 20. Nc4 Be7 21. Bf1 d5 22. Nd2 Bc5 0-1

[Event "Berlin Eckbauer op 21st"]
[Site "Berlin"]
[Date "2018.10.08"]
[Round "1"]
[White "Sondermann, Jonathan"]
[Black "Eichstaedt, Torsten"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "1762"]
[BlackElo "1401"]
[PlyCount "41"]
[EventDate "2018.10.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. e3 c5 4. exd4 cxd4 5. g3 Bg4 6. Bg2 Nc6 7. 0-0 e6 8. d3 Bxf3 9. Bxf3 Qb6 10. Re1 Bb4 11. Bd2 Bd6 12. Qa4 Nge7 13. Na3 0-0 14. Nb5 Ne5 15. Be4 a6 16. Nxd6 Qxd6 17. Bb4 Qc7 18. Qa3 Rfe8 19. Bd6 Nxc4 20. dxc4 Qxc4 21. Bxe7 1-0

[Event "JBLN Ost 1819"]
[Site "Germany"]
[Date "2018.09.29"]
[Round "1.3"]
[White "Sondermann, Jonathan"]
[Black "Nitsche, Nikolai"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "1757"]
[BlackElo "1892"]
[PlyCount "69"]
[EventDate "2018.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]
[WhiteTeam "Borussia Lichtenberg"]
[BlackTeam "Berlin Empor"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 d5 2. c4 e6 3. e3 Nf6 4. Be2 c5 5. cxd5 exd5 6. d4 Nc6 7. 0-0 Bd6 8. Nc3 0-0 9. b3 Bf5 10. Bb2 Rc8 11. Rc1 cxd4 12. Nxd4 Bg6 13. Nf3 Re8 14. Nh4 Bb8 15. Nxg6 hxg6 16. Nb5 a6 17. Nd4 Qd6 18. g3 Ba7 19. Nxc6 Rxc6 20. Rxc6 Qxc6 21. Bxf6 gxf6 22. Bf3 Rd8 23. Qd2 Qb5 24. Rd1 d4 25. Qd3 Qb4 26. Qe2 Bb6 27. exd4 Rxd4 28. Rxd4 Bxd4 29. Kg2 Kg7 30. Qd3 b5 31. Bb7 Qd6 32. Bxa6 Qxa6 33. Qxd4 Qxa2 34. Qd3 Qa8+ 35. Qf3 1/2-1/2

[Event "Berlin Werner Ott op"]
[Site "Berlin"]
[Date "2018.07.08"]
[Round "9"]
[White "Buttkus, Andree"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "2004"]
[BlackElo "1659"]
[PlyCount "67"]
[EventDate "2018.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nb3 Nf6 7. Be2 0-0 8. 0-0 d6 9. Bg5 h6 10. Bh4 Nd7 11. Qd2 Nb6 12. Rab1 Ne5 13. Nd5 Nxd5 14. exd5 g5 15. Bg3 Bf5 16. f4 gxf4 17. Bxf4 Bg6 18. Bxh6 Bxh6 19. Qxh6 Bxc2 20. Rbc1 Bg6 21. Rc3 f6 22. Bh5 Bxh5 23. Rg3+ Bg4 24. Rxg4+ Nxg4 25. Qg6+ Kh8 26. Qh5+ Kg8 27. Qxg4+ Kh8 28. Qh5+ Kg7 29. Qg4+ Kh8 30. Qh5+ Kg7 31. Rf3 Rg8 32. Rg3+ Kf8 33. Qh6+ Kf7 34. Qh7+ 1-0

[Event "Berlin Werner Ott op"]
[Site "Berlin"]
[Date "2018.07.07"]
[Round "8"]
[White "Sondermann, Jonathan"]
[Black "Werner, Dimo"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "1659"]
[BlackElo "2012"]
[PlyCount "49"]
[EventDate "2018.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. Nc3 g6 5. Be2 Bg7 6. 0-0 0-0 7. b3 Ne4 8. Bb2 dxc4 9. Bxc4 Bg4 10. d4 Bxf3 11. gxf3 Nd6 12. Be2 Nd7 13. Kh1 Nf6 14. f4 Nde4 15. Bf3 Nxc3 16. Bxc3 Nd5 17. Bb2 e6 18. Rc1 Qh4 19. Qe2 Bh6 20. Rg1 Nxf4 21. exf4 Bxf4 22. Rg2 Bxc1 23. Bxc1 Rad8 24. Bg5 Qxd4 25. Bxd8 1/2-1/2

[Event "Berlin Werner Ott op"]
[Site "Berlin"]
[Date "2018.06.30"]
[Round "1"]
[White "Gebigke, Martin"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2050"]
[BlackElo "1659"]
[PlyCount "79"]
[EventDate "2018.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. Nf3 d6 6. Be2 Nbd7 7. 0-0 e5 8. Be3 exd4 9. Nxd4 c6 10. Qd2 Nb6 11. Nc2 Re8 12. f3 Be6 13. b3 d5 14. e5 Nfd7 15. c5 Nc8 16. f4 f6 17. Nd4 fxe5 18. Nxe6 Rxe6 19. Nxd5 Kh8 20. Bg4 Re8 21. Rad1 Nf6 22. Nxf6 Qxf6 23. fxe5 Qxe5 24. Rf7 Kg8 25. Rxb7 Qxe3+ 26. Qxe3 Rxe3 27. Rd8+ Bf8 28. Bxc8 Re2 29. Be6+ Rxe6 30. Rxa8 Re5 31. b4 Rd5 32. Kf2 Rd2+ 33. Kf3 Rd3+ 34. Ke4 Rd2 35. Ke3 Rd1 36. Rbxa7 Rb1 37. Rb7 Rc1 38. a4 Rf1 39. a5 Re1+ 40. Kf2 1-0

[Event "Berlin Lieb Memorial 4th"]
[Site "Berlin"]
[Date "2018.06.29"]
[Round "7"]
[White "Prix, Siegfried"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1733"]
[BlackElo "1623"]
[PlyCount "85"]
[EventDate "2018.05.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. Nf3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 d6 7. Nc3 Nf6 8. Be2 0-0 9. 0-0 Bd7 10. Rc1 Rc8 11. Qd2 Ne5 12. b3 Neg4 13. Bxg4 Nxg4 14. Bg5 h6 15. Bh4 Qa5 16. Rfd1 g5 17. Bg3 Nf6 18. f3 Nh5 19. Nd5 Qd8 20. Bf2 Nf6 21. Ne3 g4 22. Nef5 gxf3 23. gxf3 Kh7 24. Bh4 Rg8 25. Kh1 e5 26. Nxg7 Rxg7 27. Nf5 Bxf5 28. exf5 Rc6 29. c5 d5 30. b4 Qd7 31. b5 Qxf5 32. Qd3 Qxd3 33. Rxd3 Re6 34. c6 bxc6 35. bxc6 Rg8 36. c7 Rc8 37. Kg2 d4 38. Ra3 a6 39. Rb3 Kg6 40. Rb8 Ree8 41. Rxc8 Rxc8 42. Rc6 d3 43. Kf2 1-0

[Event "Berlin Lieb Memorial 4th"]
[Site "Berlin"]
[Date "2018.06.28"]
[Round "6"]
[White "Sondermann, Jonathan"]
[Black "Steiger, Michael"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1623"]
[BlackElo "1993"]
[PlyCount "84"]
[EventDate "2018.05.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e5 6. d3 Nge7 7. Ne4 d6 8. Bg5 h6 9. Bf6 0-0 10. Qd2 Bxf6 11. Nxf6+ Kg7 12. Ne4 Be6 13. h4 f6 14. Bh3 Bxh3 15. Rxh3 Qd7 16. Rh2 b6 17. 0-0-0 d5 18. cxd5 Qxd5 19. Nc3 Qe6 20. Rg1 Nd4 21. Ne1 Rfd8 22. g4 e4 23. g5 fxg5 24. hxg5 h5 25. e3 Ndc6 26. Nxe4 Qxa2 27. Qc3+ Nd4 28. exd4 cxd4 29. Qa3 Rdc8+ 30. Kd2 Qe6 31. Nc2 a5 32. Rc1 Qe5 33. Rhh1 Qf4+ 34. Ke2 Nf5 35. Qa4 Rc7 36. Ne3 Re7 37. Nc4 Rxe4+ 38. dxe4 d3+ 39. Kd1 Qxf2 40. Re1 d2 41. Rh1 Nd4 42. Nxd2 Qe2# 0-1

[Event "Berlin Lieb Memorial 4th"]
[Site "Berlin"]
[Date "2018.06.21"]
[Round "5"]
[White "Schubert, Vincent"]
[Black "Sondermann, Jonathan"]
[Result "0-1"]
[ECO "A48"]
[BlackElo "1623"]
[PlyCount "86"]
[EventDate "2018.05.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nf3 Bg7 4. h3 0-0 5. e3 d6 6. Bd3 Nbd7 7. 0-0 Re8 8. Bh2 e5 9. dxe5 Nxe5 10. Nxe5 dxe5 11. Be2 Bf5 12. c3 Re7 13. Qxd8+ Rxd8 14. Na3 Rd2 15. Bc4 Rxb2 16. Rfc1 Rd2 17. Bb3 Ne4 18. c4 Nxf2 19. Nb1 Bxb1 20. Raxb1 Bh6 21. Rc2 Bxe3 22. Kf1 Rxc2 23. Bxc2 e4 24. Ke2 Bc5 25. Rxb7 Nd3 26. Rxc7 Rxc7 27. Bxc7 Nc1+ 28. Kd1 Nxa2 29. Ba5 f5 30. Bb3 Nb4 31. Bc7 Kf7 32. Ke2 Nc6 33. Ba2 Nd4+ 34. Kd1 Ke6 35. Bf4 Kf6 36. h4 Ne6 37. Bd2 f4 38. Bc3+ Kf5 39. Ke2 Kg4 40. Bb1 f3+ 41. Kf1 e3 42. gxf3+ Kxf3 43. Bd3 Nf4 0-1

[Event "Berlin Lieb Memorial 4th"]
[Site "Berlin"]
[Date "2018.06.07"]
[Round "4"]
[White "Sondermann, Jonathan"]
[Black "Fleischer, Matthias1"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "1623"]
[PlyCount "93"]
[EventDate "2018.05.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. b3 Nf6 4. Bb2 Bf5 5. e3 e6 6. Nc3 Nbd7 7. d4 Bb4 8. Be2 Ne4 9. Rc1 Qa5 10. a3 Nxc3 11. Qd2 Na2 12. axb4 Qxb4 13. Qxb4 Nxb4 14. Kd2 Nf6 15. Nh4 Ne4+ 16. Ke1 Bg6 17. f3 Nf6 18. Nxg6 hxg6 19. Kd2 Kd7 20. Ra1 Na6 21. cxd5 Nxd5 22. Bxa6 bxa6 23. Rxa6 Rhb8 24. Ra3 Rb7 25. Rha1 Kc8 26. e4 Nc7 27. Kd3 Nb5 28. Ra6 Rab8 29. Rxc6+ Kd7 30. Rca6 Nc7 31. Rxa7 Rxb3+ 32. Bc3 Kc6 33. Kc2 R8b7 34. Rxb7 Rxb7 35. Rb1 Ra7 36. Ra1 Rb7 37. Rb1 Ra7 38. Kd3 Ra3 39. Kc4 Ra4+ 40. Kb3 Ra7 41. Rc1 Rb7+ 42. Bb4+ Kd7 43. Ra1 Nb5 44. Rd1 Nc7 45. Rc1 Nb5 46. Rd1 Nc7 47. Rc1 1/2-1/2

[Event "Berlin Lieb Memorial 4th"]
[Site "Berlin"]
[Date "2018.05.31"]
[Round "3"]
[White "Ahlberg, Mario"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2033"]
[BlackElo "1623"]
[PlyCount "41"]
[EventDate "2018.05.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Bg7 5. 0-0 d6 6. Qe2 Nh6 7. Rd1 0-0 8. d4 cxd4 9. cxd4 f6 10. Bxc6 bxc6 11. Qc4+ Nf7 12. Qxc6 Bg4 13. Be3 Qa5 14. Qc3 Qh5 15. Nbd2 Ng5 16. Nxg5 Bxd1 17. Qc4+ d5 18. Qxd5+ Kh8 19. Nf7+ Kg8 20. Nh6+ Kh8 21. Qg8+ 1-0

[Event "Berlin Lieb Memorial 4th"]
[Site "Berlin"]
[Date "2018.05.24"]
[Round "2"]
[White "Sondermann, Jonathan"]
[Black "Helling, Bernd"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "1623"]
[BlackElo "1521"]
[PlyCount "75"]
[EventDate "2018.05.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nb6 5. Nc3 Nc6 6. d4 Bg4 7. d5 Ne5 8. Nxe5 Bxd1 9. Bb5+ c6 10. dxc6 a6 11. c7+ axb5 12. cxd8Q+ Rxd8 13. Nxd1 e6 14. Be3 Bb4+ 15. Ke2 Nc4 16. Nxc4 bxc4 17. a3 Ba5 18. Rc1 b5 19. Nc3 b4 20. axb4 Bxb4 21. Na2 Rb8 22. Nxb4 Rxb4 23. Rc2 Kd7 24. Rhc1 Rhb8 25. f3 R8b6 26. Bd2 R6b5 27. Rxc4 Rxc4 28. Rxc4 Rxb2 29. Rb4 Ra2 30. Rb7+ Ke8 31. Kd3 h6 32. Rb8+ Kd7 33. Rg8 g6 34. g4 Ra3+ 35. Ke2 Ra2 36. Rh8 Ke7 37. Rxh6 Kf6 38. Rh7 1-0

[Event "Berlin Lieb Memorial 4th"]
[Site "Berlin"]
[Date "2018.05.17"]
[Round "1"]
[White "Figura, Atila Gajo"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2386"]
[BlackElo "1623"]
[PlyCount "65"]
[EventDate "2018.05.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. Nf3 d6 6. Be3 Nbd7 7. Nd2 e5 8. d5 a5 9. Be2 h6 10. g4 Nh7 11. h4 f5 12. gxf5 gxf5 13. exf5 Nc5 14. Nde4 Nxe4 15. Nxe4 Bxf5 16. Ng3 Bg6 17. Bh5 Be8 18. Qd2 Qf6 19. Bxe8 Rfxe8 20. 0-0-0 Qg6 21. h5 Qf6 22. Rhg1 Kh8 23. Ne4 Qf5 24. Bxh6 Bxh6 25. Qxh6 Rg8 26. Qe3 Raf8 27. Rxg8+ Rxg8 28. c5 Rd8 29. cxd6 cxd6 30. Kb1 Qxh5 31. Rc1 Qf7 32. Qh6 Qxd5 33. Qxh7+ 1-0

[Event "Berlin Lichtenrade op 13th"]
[Site "Berlin"]
[Date "2017.11.05"]
[Round "9"]
[White "Feil, Stephan"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2084"]
[BlackElo "1478"]
[PlyCount "57"]
[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 Nc6 3. Bb5 d6 4. Bxc6+ bxc6 5. 0-0 g6 6. Re1 Bg7 7. c3 e5 8. d4 cxd4 9. cxd4 exd4 10. Nxd4 Ne7 11. Nc3 0-0 12. Bg5 f6 13. Bf4 f5 14. Bg5 Bf6 15. Bxf6 Rxf6 16. Nxc6 Nxc6 17. Qd5+ Be6 18. Qxc6 Rc8 19. Qa6 Qb6 20. Qxb6 axb6 21. exf5 Bxf5 22. Nd5 Rff8 23. Ne7+ Kf7 24. Nxc8 Rxc8 25. Rac1 Ra8 26. a3 Ra7 27. Rc6 Ra5 28. Rxd6 Rc5 29. Rxb6 1-0

[Event "Pardubice Czech op-D 28th"]
[Site "Pardubice"]
[Date "2017.07.24"]
[Round "4"]
[White "Babijczuk, Wojciech"]
[Black "Sondermann, Jonathan"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1611"]
[BlackElo "1423"]
[PlyCount "120"]
[EventDate "2017.07.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf5 d6 7. Bd3 g6 8. Ne3 Bg7 9. Ned5 a6 10. Be3 0-0 11. Qd2 Be6 12. Bg5 b5 13. a3 Rc8 14. h4 Nd4 15. f3 Bd7 16. h5 Ne6 17. Nxf6+ Bxf6 18. Bh6 Bg5 19. Bxg5 Qxg5 20. Qxg5 Nxg5 21. Nd5 Kh8 22. hxg6 fxg6 23. Ne7 Kg7 24. Nxc8 Rxc8 25. Kf2 Ne6 26. Ke3 Nf4 27. g3 Ne6 28. Rh2 Rf8 29. c3 Nc5 30. Rd1 Rf6 31. Be2 g5 32. c4 Nb3 33. cxb5 axb5 34. Rd3 Nd4 35. b4 Be6 36. Rc3 Bc4 37. Bd1 d5 38. exd5 Bxd5 39. Rc7+ Rf7 40. Rxf7+ Bxf7 41. a4 bxa4 42. Bxa4 h6 43. Bc2 Bd5 44. Be4 Bc4 45. f4 gxf4+ 46. gxf4 Ne6 47. fxe5 h5 48. Rxh5 Nf8 49. Kd4 Bf7 50. Rg5+ Kh8 51. Bd5 Ne6+ 52. Bxe6 Bxe6 53. Kc5 Kh7 54. Kd6 Bc4 55. e6 Kh6 56. Rg1 Bd3 57. Ke5 Bc2 58. Kf6 Kh7 59. b5 Kh8 60. e7 Bg6 1-0

[Event "Pardubice Czech op-D 28th"]
[Site "Pardubice"]
[Date "2017.07.23"]
[Round "2"]
[White "Benda, Vladimir"]
[Black "Sondermann, Jonathan"]
[Result "0-1"]
[ECO "B38"]
[WhiteElo "1671"]
[BlackElo "1423"]
[PlyCount "66"]
[EventDate "2017.07.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. Nf3 d6 4. h3 Nf6 5. Nc3 g6 6. d4 cxd4 7. Nxd4 Bg7 8. Be3 0-0 9. Be2 Bd7 10. 0-0 Rc8 11. Rc1 Ne5 12. b3 a6 13. f4 Nc6 14. Bf3 Re8 15. Qd2 Nxd4 16. Bxd4 Bc6 17. Be3 Nd7 18. Rfe1 Nc5 19. Bf2 f5 20. exf5 Bxf3 21. gxf3 gxf5 22. Bg3 Kh8 23. Re2 Rg8 24. Kh2 Qe8 25. Rg1 Qh5 26. Re3 e5 27. Nd5 Rge8 28. Rge1 Re6 29. Qg2 Rg6 30. Qf1 Bh6 31. Ne7 exf4 32. Nxg6+ Qxg6 33. Re7 Qxg3+ 0-1

