[Event "GER-chT U16"]
[Site "Willingen"]
[Date "2021.06.27"]
[Round "7.2"]
[White "Schaefer, Konstantin"]
[Black "Zeuner, Ole"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1754"]
[BlackElo "1770"]
[PlyCount "119"]
[EventDate "2021.06.23"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG "]
[BlackTeam "Magdeburg Schachzwerge"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 a6 3. c4 b6 4. d4 cxd4 5. Nxd4 e6 6. Nc3 Bb7 7. Be2 Qc7 8. 0-0 Nf6 9. f3 h5 10. Be3 h4 11. h3 Nc6 12. Rc1 Bc5 13. Na4 Qe5 14. Nxc5 bxc5 15. Nxc6 Bxc6 16. Qd2 0-0 17. Bf4 Qh5 18. Bd6 Rfc8 19. Rb1 Ne8 20. Bf4 d6 21. Bg5 f6 22. Bf4 a5 23. b3 Rd8 24. Rfd1 Qg6 25. Qe1 e5 26. Bd2 a4 27. Qxh4 axb3 28. axb3 Rdb8 29. b4 cxb4 30. Rxb4 Rxb4 31. Bxb4 Ra2 32. Bf1 Qf7 33. Bxd6 Qa7+ 34. Kh2 Ra1 35. Qe1 Ra2 36. c5 Ra4 37. Qc3 Qf7 38. Rc1 Qg6 39. Qb3+ Kh8 40. Bb5 Bxb5 41. Qxb5 Ra2 42. Qf1 Rd2 43. Bb8 Qf7 44. c6 Rd8 45. c7 Rc8 46. Qa6 Qd7 47. Rd1 Nxc7 48. Qb7 Qxd1 49. Qxc8+ Kh7 50. Qxc7 Qd2 51. Ba7 Qf4+ 52. Kh1 Qd2 53. Qc5 Qa2 54. Bb6 Qe6 55. Bc7 Qc8 56. Bd6 Qe6 57. Bf8 Qf7 58. Qe7 Qg6 59. Kh2 Qg5 60. Qxg7+ 1-0

[Event "GER-chT U16"]
[Site "Willingen"]
[Date "2021.06.26"]
[Round "5.2"]
[White "Schaefer, Konstantin"]
[Black "Schubert, Nikita"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1754"]
[BlackElo "1917"]
[PlyCount "66"]
[EventDate "2021.06.23"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG "]
[BlackTeam "Gera"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 0-0 6. 0-0 d5 7. exd5 Nxd5 8. Re1 Bg4 9. h3 Bh5 10. Nbd2 Nb6 11. b4 Bd6 12. Bb3 Kh8 13. Ne4 f6 14. Bb2 a6 15. a3 Be7 16. c4 a5 17. b5 Bxf3 18. Qxf3 Nd4 19. Qd1 Nd7 20. Bxd4 exd4 21. Qh5 f5 22. Ng3 Bd6 23. Ne2 Qf6 24. Bc2 Rae8 25. Qf3 Qe5 26. Ng3 Qxe1+ 27. Rxe1 Rxe1+ 28. Kh2 b6 29. a4 h6 30. h4 Ne5 31. Qd5 Ng4+ 32. Kh3 Nxf2+ 33. Kh2 Rh1# 0-1

[Event "GER-chT U16"]
[Site "Willingen"]
[Date "2021.06.26"]
[Round "6.4"]
[White "Sell, Eero"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1766"]
[BlackElo "1754"]
[PlyCount "57"]
[EventDate "2021.06.23"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]
[WhiteTeam "Blankenese"]
[BlackTeam "Leipzig SG "]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. 0-0 Nxb5 7. Nxb5 a6 8. Nc3 e6 9. e5 d5 10. d4 cxd4 11. Nxd4 Ne7 12. Qe1 Qb6 13. Be3 Qxb2 14. a3 Qb6 15. Nf5 Qc7 16. Nxg7+ Kf8 17. f5 Kxg7 18. Bh6+ Kxh6 19. f6 Nf5 20. Rxf5 gxf5 21. Qh4+ Kg6 22. Qg3+ Kh6 23. Ne2 Qc4 24. Qg7+ Kh5 25. Ng3+ Kh4 26. Rf1 Qxf1+ 27. Nxf1 Bd7 28. Qh6+ Kg4 29. h3# 1-0

[Event "GER-chT U16"]
[Site "Willingen"]
[Date "2021.06.25"]
[Round "3.6"]
[White "Schaefer, Konstantin"]
[Black "Steinbach, Julian"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1754"]
[BlackElo "1704"]
[PlyCount "63"]
[EventDate "2021.06.23"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG "]
[BlackTeam "Kiel Doppelbauer"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Bc4 exd4 5. Qxd4 Be7 6. f4 0-0 7. Nf3 Nc6 8. Qd3 Nb4 9. Qe2 d5 10. Bd3 dxe4 11. Nxe4 Nxd3+ 12. cxd3 Bg4 13. 0-0 c6 14. Qc2 Bxf3 15. Rxf3 Nd5 16. Kh1 Qd7 17. Bd2 Rad8 18. Bc3 f5 19. Nd2 Bf6 20. Nc4 Nxc3 21. bxc3 c5 22. Re1 Rfe8 23. Rfe3 Rxe3 24. Rxe3 Re8 25. Ne5 Qb5 26. a4 Qb6 27. Qa2+ c4 28. Nxc4 Rxe3 29. Ne5+ Kh8 30. Nf7+ Kg8 31. Nh6+ Kf8 32. Qf7# 1-0

[Event "GER-chT U16"]
[Site "Willingen"]
[Date "2021.06.25"]
[Round "4.4"]
[White "Sinnhoefer, Joshua"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "D50"]
[WhiteElo "1712"]
[BlackElo "1754"]
[PlyCount "51"]
[EventDate "2021.06.23"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]
[WhiteTeam "Delmenhorst"]
[BlackTeam "Leipzig SG "]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 e6 5. Nc3 d5 6. Bg5 Be7 7. e3 0-0 8. cxd5 Nxd5 9. Bxe7 Nxe7 10. Bd3 Nbc6 11. 0-0 Nxd4 12. exd4 Bd7 13. Ne4 Nf5 14. Bc2 Bb5 15. Re1 Qxd4 16. Qh5 Qxb2 17. Ng5 h6 18. Bxf5 exf5 19. Nf3 Bd3 20. Nh4 Qb5 21. h3 Rfe8 22. g3 Re5 23. a4 Qb2 24. Ng2 Rae8 25. Ne3 f4 26. Qd1 0-1

[Event "GER-chT U16"]
[Site "Willingen"]
[Date "2021.06.24"]
[Round "1.8"]
[White "Schaefer, Konstantin"]
[Black "Borodaev, Roman"]
[Result "1-0"]
[ECO "B55"]
[WhiteElo "1754"]
[BlackElo "1657"]
[PlyCount "85"]
[EventDate "2021.06.23"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG "]
[BlackTeam "Karlsruhe SF"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 Nc6 6. c4 e6 7. Nc2 Be7 8. Nc3 0-0 9. Be3 d5 10. cxd5 exd5 11. exd5 Nb4 12. Bc4 b5 13. Nxb5 Nfxd5 14. Bf2 Nf4 15. Ne3 Nbd3+ 16. Bxd3 Nxd3+ 17. Ke2 Nxf2 18. Kxf2 Qb6 19. Qb3 Bc5 20. Rhe1 Re8 21. Na3 Qh6 22. Nac2 Qxh2 23. Qd5 Bxe3+ 24. Nxe3 Qh4+ 25. Kg1 Be6 26. Qe4 Qxe4 27. fxe4 Rab8 28. b3 h6 29. Rac1 a5 30. Nd5 Bxd5 31. exd5 Rxe1+ 32. Rxe1 Rd8 33. Rd1 Kf8 34. Kf2 Ke7 35. Ke3 Kd6 36. Kd4 Rb8 37. Rc1 Rb4+ 38. Rc4 f5 39. Rxb4 axb4 40. Kc4 f4 41. Kxb4 g5 42. Kc4 g4 43. Kd4 1-0

[Event "GER-chT U16"]
[Site "Willingen"]
[Date "2021.06.24"]
[Round "2.1"]
[White "Von Krosigk, Florian"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "1941"]
[BlackElo "1754"]
[PlyCount "61"]
[EventDate "2021.06.23"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]
[WhiteTeam "Hamburger SK"]
[BlackTeam "Leipzig SG "]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 Qd6 7. 0-0 e5 8. a4 Nf6 9. a5 0-0 10. Be3 Nh5 11. Nbd2 Nf4 12. Nc4 Qe7 13. Qd2 f5 14. Bxf4 exf4 15. Qxf4 fxe4 16. Qxe4 Qc7 17. Nfe5 Bf5 18. Qe3 Rae8 19. Rae1 b5 20. axb6 axb6 21. f4 g5 22. Qf3 b5 23. Nd2 gxf4 24. Nxc6 Re3 25. Qd5+ Be6 26. Qxc5 Rf5 27. Ne7+ Qxe7 28. Qxe7 Bd4 29. Rxe3 fxe3 30. Qxe6+ Kh8 31. Qxf5 1-0

[Event "GER-chT Online Liga Playoffs"]
[Site "Playchess.com INT"]
[Date "2021.04.16"]
[Round "1.3"]
[White "Gallasch, Jonas"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2112"]
[BlackElo "1754"]
[PlyCount "71"]
[EventDate "2021.04.15"]
[EventType "team-k.o. (rapid)"]
[EventRounds "3"]
[EventCountry "GER"]
[SourceTitle "CBM 201 Extra"]
[Source "ChessBase"]
[SourceDate "2021.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.05.31"]
[SourceQuality "1"]
[WhiteTeam "Porz SG"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 bxc4 5. Nc3 g6 6. e4 d6 7. Bxc4 Bg7 8. h3 0-0 9. 0-0 Nbd7 10. Qe2 Nb6 11. Bd3 Nfd7 12. Bf4 Bb7 13. Rfc1 Re8 14. Qc2 Nf8 15. Bb5 Nbd7 16. Re1 Qb6 17. a4 a6 18. a5 Qc7 19. Ba4 Rec8 20. Nd2 c4 21. Bxd7 Nxd7 22. Ra4 Nc5 23. Rxc4 Qxa5 24. b4 Qb6 25. bxc5 Rxc5 26. Na4 Rxc4 27. Nxc4 Qc7 28. Qb3 Rb8 29. Rb1 Bf6 30. Be3 Rc8 31. Nab6 Rb8 32. Na5 Kg7 33. Rc1 Qd8 34. Qa4 Ba8 35. Nc6 Bxc6 36. dxc6 1-0

[Event "GER-chT Online Liga 1 GpB"]
[Site "Playchess.com INT"]
[Date "2021.03.22"]
[Round "7.4"]
[White "Carlstedt, Jonathan"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2451"]
[BlackElo "1754"]
[PlyCount "55"]
[EventDate "2021.01.18"]
[EventType "team-tourn (rapid)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Werder Bremen"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Bg5 Ne4 3. h4 c5 4. d5 Qb6 5. Nd2 Nxd2 6. Bxd2 Qxb2 7. e4 Qe5 8. Bd3 c4 9. Nf3 Qc7 10. Be2 Na6 11. 0-0 Nc5 12. e5 b5 13. Re1 Bb7 14. Bf4 e6 15. d6 Qc6 16. Bf1 g6 17. Nd4 Qb6 18. Rb1 a6 19. Bxc4 Ne4 20. Qd3 Qc5 21. Bb3 Nc3 22. Ra1 Bg7 23. h5 gxh5 24. Qe3 Rc8 25. Bh6 Rg8 26. Qg5 f6 27. Qxh5+ Kf8 28. Bxe6 1-0

[Event "GER-chT Online Liga 1 GpB"]
[Site "Playchess.com INT"]
[Date "2021.03.17"]
[Round "6.3"]
[White "Fehling, Michael"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "2182"]
[BlackElo "1754"]
[PlyCount "53"]
[EventDate "2021.01.18"]
[EventType "team-tourn (rapid)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Hamburger SK II"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 Qa5 9. f3 Nxd4 10. Bxd4 b5 11. e5 Ne8 12. 0-0 Bb7 13. Nd5 Bxd5 14. Bxd5 Rc8 15. f4 Nc7 16. Bb3 b4 17. a3 a6 18. axb4 Qxb4 19. f5 gxf5 20. Rxf5 Ne6 21. Ra4 Qb5 22. Be3 Kh8 23. Rh4 Bf6 24. Rxh7+ Kg8 25. Qg4+ Bg7 26. Rxg7+ Nxg7 27. Rg5 1-0

[Event "GER-chT Online Liga 1 GpB"]
[Site "Playchess.com INT"]
[Date "2021.03.01"]
[Round "5.3"]
[White "Schulz, Michael2222"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "2095"]
[BlackElo "1754"]
[PlyCount "126"]
[EventDate "2021.01.18"]
[EventType "team-tourn (rapid)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Spandau Zitadelle"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 c5 4. f3 Qa5+ 5. c3 Nf6 6. d5 Qb6 7. e4 Qxb2 8. Nd2 Qxc3 9. Bc7 b6 10. Rc1 Qa5 11. Be5 Ba6 12. Bc3 Qa3 13. Nc4 Bxc4 14. Bxc4 e6 15. Ne2 Na6 16. dxe6 fxe6 17. e5 Nd5 18. Bxd5 exd5 19. Qxd5 Nc7 20. Qb7 Qa6 21. Qe4 0-0-0 22. 0-0 Qb7 23. Qxb7+ Kxb7 24. Rcd1 Kc6 25. f4 Nd5 26. Rf3 g6 27. Bb2 Bg7 28. Rfd3 Ne7 29. Rd6+ Kc7 30. Nc3 a6 31. a4 Rhe8 32. a5 Nc8 33. axb6+ Nxb6 34. Ba3 Bf8 35. Rf6 Re6 36. Rf7 Nc4 37. Bc1 h5 38. Nd5+ Kc6 39. Nf6 Re7 40. Rxe7 Bxe7 41. Nd5 Bf8 42. Kf2 a5 43. h3 a4 44. g4 hxg4 45. hxg4 a3 46. f5 Nxe5 47. Bxa3 Nxg4+ 48. Kg3 gxf5 49. Kf4 Ra8 50. Bb2 Ra2 51. Kxf5 Rxb2 52. Kxg4 Re2 53. Kf3 Re5 54. Ne3 d5 55. Rg1 c4 56. Rg8 Bc5 57. Rc8+ Kb5 58. Rb8+ Ka4 59. Nd1 Bd4 60. Kf4 Re1 61. Nb2+ Bxb2 62. Rxb2 c3 63. Rc2 Kb3 0-1

[Event "GER-chT Online Liga 1 GpB"]
[Site "Playchess.com INT"]
[Date "2021.02.24"]
[Round "4.3"]
[White "Schaefer, Konstantin"]
[Black "Hart, Martin"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1754"]
[BlackElo "2010"]
[PlyCount "126"]
[EventDate "2021.01.18"]
[EventType "team-tourn (rapid)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG"]
[BlackTeam "Hellern"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. d5 e5 7. Nc3 g6 8. Bd3 Bg7 9. Nge2 0-0 10. 0-0 f5 11. b3 Na6 12. Ba3 Nc5 13. Rc1 a5 14. Nb5 Qf6 15. Nec3 Bd7 16. Qd2 Rae8 17. f3 h5 18. Bc2 Kh7 19. Qf2 Rc8 20. Na7 Rc7 21. Ncb5 Bxb5 22. Nxb5 Rcc8 23. Rce1 Nbd7 24. Qd2 b6 25. Bb2 Qe7 26. Nc3 Rce8 27. Ne2 Qf7 28. f4 Bh6 29. g3 h4 30. Kg2 Nf6 31. b4 Nce4 32. Qe3 Ng4 33. Qxb6 Rb8 34. Qxa5 Ne3+ 35. Kg1 Nxc2 36. Rc1 Nxb4 37. Bc3 Nd3 38. Rc2 hxg3 39. hxg3 Nxc3 40. Qxc3 e4 41. Kg2 Bg7 42. Rh1+ Kg8 43. Qa3 Qc7 44. Nc3 Qc5 45. Qxc5 Nxc5 46. Nb5 Rfd8 47. Kf2 Ra8 48. Ke3 Ra4 49. Rhc1 Rda8 50. a3 Kf8 51. Rh1 Kg8 52. Rhc1 R8a6 53. Rg2 Nb3 54. Rcc2 Na5 55. c5 dxc5 56. Rxc5 Nc4+ 57. Ke2 Nxa3 58. Rc8+ Bf8 59. d6 Nxb5 60. d7 Nd4+ 61. Ke3 Ne6 62. Re8 Ra3+ 63. Ke2 Rd3 0-1

[Event "GER-chT Online Liga 1 GpB"]
[Site "Playchess.com INT"]
[Date "2021.02.08"]
[Round "3.3"]
[White "Tonndorf, Matthias"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "2175"]
[BlackElo "1754"]
[PlyCount "69"]
[EventDate "2021.01.18"]
[EventType "team-tourn (rapid)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Hameln"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 d6 6. 0-0 e6 7. d3 Nge7 8. Be3 0-0 9. Qd2 a6 10. Bh6 b5 11. Bxg7 Kxg7 12. d4 b4 13. Na4 Qa5 14. b3 Rd8 15. a3 Qb5 16. Rfd1 a5 17. Bf1 Qb8 18. dxc5 dxc5 19. Qc1 Qa7 20. Rxd8 Nxd8 21. Qg5 Nec6 22. Qxc5 Qc7 23. Nb6 Rb8 24. Nc4 Nb7 25. Qe3 Bd7 26. axb4 Nxb4 27. Rd1 Kg8 28. Qh6 f6 29. e5 f5 30. Ng5 Bc8 31. Nd6 Nxd6 32. exd6 Qd7 33. Bc4 Nd5 34. Rxd5 exd5 35. Bxd5+ 1-0

[Event "GER-chT Online Liga 1 GpB"]
[Site "Playchess.com INT"]
[Date "2021.02.05"]
[Round "2.4"]
[White "Becker, Christian Ludwig"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1433"]
[BlackElo "1754"]
[PlyCount "68"]
[EventDate "2021.01.18"]
[EventType "team-tourn (rapid)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Heidesheim"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. a4 Nxb5 7. axb5 b6 8. 0-0 e6 9. Qe1 Ne7 10. d3 0-0 11. Qh4 d5 12. f5 exf5 13. Bh6 fxe4 14. Ng5 Nf5 15. Rxf5 Bxf5 16. Bxg7 Kxg7 17. Qxh7+ Kf6 18. dxe4 Kxg5 19. exf5 Kxf5 20. Qg7 Qh4 21. Rf1+ Ke6 22. Kh1 Qh8 23. Rf6+ Ke5 24. Rxg6+ Qxg7 25. Rxg7 d4 26. Nd1 a6 27. h4 axb5 28. Nf2 c4 29. Rg5+ f5 30. g4 Kf4 31. Kg2 fxg4 32. Rxg4+ Ke5 33. Rg5+ Rf5 34. Ng4+ Kf4 0-1

[Event "GER-chT Online Liga 1 GpB"]
[Site "Playchess.com INT"]
[Date "2021.01.20"]
[Round "1.3"]
[White "Schulze, Marc Andre"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2222"]
[BlackElo "1754"]
[PlyCount "86"]
[EventDate "2021.01.18"]
[EventType "team-tourn (rapid)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]
[WhiteTeam "Plettenberg"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Nf3 c5 3. c3 d5 4. Bf4 Nc6 5. e3 e6 6. Nbd2 Bd6 7. Bg3 0-0 8. Bd3 c4 9. Bc2 b5 10. Qe2 Qc7 11. e4 dxe4 12. Nxe4 Nxe4 13. Qxe4 f5 14. Bxd6 Qxd6 15. Qe3 b4 16. 0-0 Bd7 17. Rfd1 Ne7 18. Ne5 Nd5 19. Qf3 Bb5 20. a4 Ba6 21. Re1 Rab8 22. Bd1 bxc3 23. bxc3 Rb2 24. Be2 Rc8 25. a5 Rc2 26. Rec1 Rxc1+ 27. Rxc1 Qa3 28. Rc2 Qxa5 29. h4 Qa4 30. Bd1 Qa1 31. Nd7 Bb5 32. Nc5 Ba4 33. Rd2 Bxd1 34. Rxd1 Qxc3 35. Qe2 Nf4 36. Qe5 Qc2 37. Ra1 Qc3 38. Rxa7 Qxd4 39. Rxg7+ Kh8 40. Qxd4 Ne2+ 41. Kf1 Nxd4 42. Rd7 e5 43. Na4 Ra8 0-1

[Event "GER-chT Christmas U16 Lasker"]
[Site "Playchess.com INT"]
[Date "2020.12.28"]
[Round "5.3"]
[White "Beyer, Lorenz"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1362"]
[BlackElo "1754"]
[PlyCount "90"]
[EventDate "2020.12.28"]
[EventType "team-swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]
[WhiteTeam "Barnim Stahl Finow"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Nf3 c5 3. e3 d5 4. c3 Nc6 5. Bd3 e6 6. 0-0 Bd6 7. Nbd2 0-0 8. dxc5 Bxc5 9. e4 b6 10. e5 Ng4 11. Nb3 Ngxe5 12. Nxc5 bxc5 13. Bxh7+ Kxh7 14. Ng5+ Kg6 15. f4 f6 16. Nh3 Ba6 17. fxe5 Bxf1 18. Nf4+ Kh7 19. Qh5+ Kg8 20. Nxe6 Qe8 21. Qg4 Qd7 22. Bh6 Nxe5 23. Qg3 Rf7 24. Nxc5 Qc6 25. Nb3 Bd3 26. Nd4 Qb6 27. Be3 Qxb2 28. Re1 Qxc3 29. Ne6 Bf5 30. Nd4 Be4 31. Rc1 Qb2 32. Rf1 Rc8 33. Qh3 Rc3 34. Nf5 Bxf5 35. Qxf5 Rxe3 36. Qc8+ Rf8 37. Qe6+ Kh8 38. g3 Nf3+ 39. Rxf3 Rxe6 40. Rf2 Re1+ 41. Kg2 Re2 42. Rxe2 Qxe2+ 43. Kh3 g5 44. a4 Kg7 45. a5 Rh8# 0-1

[Event "GER-chT Christmas U16 Lasker"]
[Site "Playchess.com INT"]
[Date "2020.12.28"]
[Round "3.3"]
[White "Bolz, Jannis"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1636"]
[BlackElo "1754"]
[PlyCount "64"]
[EventDate "2020.12.28"]
[EventType "team-swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]
[WhiteTeam "Koeln Porz"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. b4 b6 3. a3 Bb7 4. Bd3 Nc6 5. c3 g6 6. Nf3 Bg7 7. 0-0 Nf6 8. Bc2 0-0 9. d4 cxd4 10. cxd4 d5 11. e5 Ne8 12. Ng5 Nc7 13. Re1 f6 14. exf6 exf6 15. Nf3 Qd6 16. Bd2 Nb5 17. Bc3 Rae8 18. a4 Nxc3 19. Nxc3 Qxb4 20. Nxd5 Rxe1+ 21. Qxe1 Qxe1+ 22. Rxe1 f5 23. Ne5 Nxd4 24. Bb1 Bxd5 25. Nd7 Rd8 26. h3 Rxd7 27. Kh2 Kf7 28. Bd3 Re7 29. g3 Rxe1 30. f3 Bxf3 31. g4 f4 32. h4 Rh1# 0-1

[Event "GER-chT Christmas U16 Lasker"]
[Site "Playchess.com INT"]
[Date "2020.12.28"]
[Round "1.3"]
[White "Kalina, Lena"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "1585"]
[BlackElo "1754"]
[PlyCount "154"]
[EventDate "2020.12.28"]
[EventType "team-swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]
[WhiteTeam "Landskrone"]
[BlackTeam "Leipzig SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6 Qxb6 6. Nc3 g6 7. e4 d6 8. a4 Bg7 9. a5 Qb4 10. Ra4 Qb7 11. Be2 0-0 12. Nf3 Bd7 13. Ra1 Bb5 14. 0-0 Nbd7 15. Nd2 Ne5 16. f4 Nd3 17. Nxb5 Nxc1 18. Qxc1 axb5 19. Rf3 Rfb8 20. Rb3 Qc7 21. a6 c4 22. Rba3 b4 23. Ra4 c3 24. bxc3 Qxc3 25. Qxc3 bxc3 26. Nc4 c2 27. Bd3 Rb1+ 28. Rxb1 cxb1Q+ 29. Bxb1 Nd7 30. a7 Bd4+ 31. Kf1 Rxa7 32. Rxa7 Bxa7 33. Bc2 Kg7 34. Ba4 Nc5 35. Bc2 Nd7 36. Ke2 Kf6 37. Kf3 h5 38. g4 hxg4+ 39. Kxg4 Bc5 40. Na5 Nb6 41. Nc6 Nc4 42. Bd3 Nb2 43. e5+ dxe5 44. fxe5+ Kg7 45. Be2 Na4 46. Bc4 Nc3 47. Kf4 Ba3 48. Nd4 Bc5 49. Nf3 f6 50. exf6+ Kxf6 51. Ne5 Bd6 52. Bd3 Bxe5+ 53. Ke3 Bxh2 54. Kd4 Be5+ 55. Ke3 Nxd5+ 56. Ke4 g5 57. Kxd5 g4 58. Ke4 g3 59. Kf3 Kg5 60. Be4 Bf4 61. Kg2 Kf6 62. Kf3 Ke5 63. Bb7 Kf5 64. Be4+ Kg5 65. Kg2 e5 66. Kf3 Kf6 67. Kg2 Ke6 68. Kf3 Kd6 69. Kg2 Kc5 70. Kf3 Kc4 71. Kg2 Kd4 72. Bb7 e4 73. Ba6 Bc7 74. Bf1 Kc3 75. Be2 Kd2 76. Bf3 e3 77. Kf1 Kd3 0-1

[Event "GER-chT Christmas U16 Lasker"]
[Site "Playchess.com INT"]
[Date "2020.12.28"]
[Round "4.3"]
[White "Schaefer, Konstantin"]
[Black "Gluma, Christian"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1754"]
[BlackElo "1864"]
[PlyCount "118"]
[EventDate "2020.12.28"]
[EventType "team-swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG"]
[BlackTeam "Bochum SG"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 g6 2. d4 Bg7 3. Nf3 c6 4. Bc4 d5 5. exd5 c5 6. c3 cxd4 7. Nxd4 Nf6 8. 0-0 0-0 9. Nc2 Nbd7 10. Bf4 Nb6 11. Ne3 Nxc4 12. Nxc4 Nxd5 13. Be5 Bxe5 14. Nxe5 f6 15. Nc4 e5 16. Nbd2 Be6 17. Qe2 Nf4 18. Qe3 a6 19. Rfd1 Qc7 20. b3 Qc6 21. f3 Rad8 22. Nb2 Nd5 23. Qf2 Qxc3 24. Ne4 Qb4 25. Rac1 f5 26. Ng5 Bf7 27. Rc4 Qb6 28. Rc5 Nf4 29. Rxd8 Rxd8 30. Nxf7 Ne2+ 31. Kf1 Nd4 32. Nxd8 Qxc5 33. Qd2 Qb6 34. Nxb7 Qxb7 35. Nc4 Qd5 36. f4 e4 37. Ne3 Qb5+ 38. Nc4 Qc5 39. Ne5 Kg7 40. g4 Qb5+ 41. Kf2 Ne6 42. gxf5 gxf5 43. Qd7+ Qxd7 44. Nxd7 Nxf4 45. Nc5 a5 46. a3 Kf6 47. Nb7 a4 48. bxa4 Ke5 49. a5 Nd3+ 50. Ke3 f4+ 51. Ke2 Kd5 52. a6 Kc6 53. Na5+ Kb6 54. Nc4+ Kxa6 55. Nd6 Nc5 56. a4 Kb6 57. Nf7 Nxa4 58. Ng5 Nc3+ 59. Kd2 f3 0-1

[Event "GER-chT Christmas U16 Lasker"]
[Site "Playchess.com INT"]
[Date "2020.12.28"]
[Round "2.3"]
[White "Schaefer, Konstantin"]
[Black "Isbilir, Levin"]
[Result "1/2-1/2"]
[ECO "B55"]
[WhiteElo "1754"]
[BlackElo "1325"]
[PlyCount "187"]
[EventDate "2020.12.28"]
[EventType "team-swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG"]
[BlackTeam "Erlangen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 g6 6. c4 Bg7 7. Nc3 Nc6 8. Nc2 0-0 9. Be3 Be6 10. Qd2 Ne5 11. b3 Qa5 12. Be2 Nfd7 13. Nd4 Rfc8 14. Rc1 Nc5 15. 0-0 Nc6 16. Rfd1 Bd7 17. Nxc6 bxc6 18. Bd4 Rab8 19. Bf1 Qb6 20. Kh1 Bxd4 21. Qxd4 Be6 22. e5 dxe5 23. Qxe5 Rd8 24. Ne4 Nxe4 25. Qxe4 Rxd1 26. Rxd1 Rd8 27. Rxd8+ Qxd8 28. Qxc6 Qd1 29. Kg1 Qd4+ 30. Kh1 Qf2 31. h3 Qxf1+ 32. Kh2 Qf2 33. Qe8+ Kg7 34. Qxe7 Qxa2 35. Qb7 Bf5 36. c5 Be6 37. b4 a5 38. b5 Qb2 39. b6 a4 40. Qa7 Qe5+ 41. Kh1 Qxc5 42. Qxa4 Qxb6 43. Kh2 Qd6+ 44. Kh1 Qd5 45. Kh2 Qe5+ 46. Kh1 Qe1+ 47. Kh2 Qe5+ 48. Kh1 Qd5 49. Kh2 Qc4 50. Qa5 Qd4 51. Qa3 Qd5 52. Kh1 h5 53. Kh2 Qe5+ 54. Kh1 Qg3 55. Qc3+ Kh7 56. Kg1 Qf4 57. Kh1 Qf5 58. Kg1 g5 59. Kh1 Qg6 60. Qe5 Qg7 61. Qe3 Qg6 62. Qe5 Qg7 63. Qe3 Qf6 64. Kh2 Kg6 65. Kh1 Kg7 66. Kg1 Kg6 67. Kh1 Bf5 68. Kg1 Qe6 69. Qd4 Qe1+ 70. Kh2 Qe6 71. Qd2 Qe5+ 72. Kh1 Qf4 73. Qe2 Qd6 74. Kg1 Qe6 75. Qd2 f6 76. Kh1 Qe5 77. Kg1 Qc5+ 78. Kh2 Qc7+ 79. Kh1 Qe7 80. Kg1 g4 81. hxg4 hxg4 82. fxg4 Bxg4 83. Qd3+ f5 84. Qg3 Qe4 85. Qd6+ Kg5 86. Qd8+ Kg6 87. Qd6+ Kf7 88. Qc7+ Qe7 89. Qc4+ Kf8 90. Qc8+ Qe8 91. Qc5+ Kg7 92. Qc3+ Kg6 93. Qd2 Qe4 94. Qd6+ 1/2-1/2

[Event "GER-chT Christmas U16 Lasker"]
[Site "Playchess.com INT"]
[Date "2020.12.28"]
[Round "7.3"]
[White "Schaefer, Konstantin"]
[Black "Mukovskiy, Peter"]
[Result "0-1"]
[ECO "B27"]
[WhiteElo "1754"]
[BlackElo "1721"]
[PlyCount "18"]
[EventDate "2020.12.28"]
[EventType "team-swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG"]
[BlackTeam "Duesseldorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. e5 Nc6 6. Qc5 e6 7. Qc4 Nd5 8. Nc3 Nxc3 9. Qxc3 Bb4 0-1

[Event "GER-chT Christmas U16 Lasker"]
[Site "Playchess.com INT"]
[Date "2020.12.28"]
[Round "6.3"]
[White "Schaefer, Konstantin"]
[Black "Rennkamp, David"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1754"]
[BlackElo "1371"]
[PlyCount "32"]
[EventDate "2020.12.28"]
[EventType "team-swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]
[WhiteTeam "Leipzig SG"]
[BlackTeam "Lueneburg Turm"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. c3 d6 6. a4 a6 7. 0-0 Nf6 8. d3 0-0 9. h3 Ne7 10. Bg5 Ng6 11. Nbd2 h6 12. Bxf6 Qxf6 13. Nb3 Nf4 14. d4 exd4 15. cxd4 Qg6 16. Kh2 Qxg2# 0-1

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "1"]
[White "Borgert, Alexander"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "1457"]
[BlackElo "1649"]
[PlyCount "26"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nc3 b4 5. Nb5 a6 6. Qa4 Bb7 7. Be3 axb5 8. Qxb5 Ba6 9. Qxc5 e6 10. d6 Nc6 11. a3 b3 12. Nf3 Ne4 13. Qd4 Nxd4 0-1

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "4"]
[White "Hagenbeck Huebert, Jan"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1459"]
[BlackElo "1682"]
[PlyCount "106"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c3 d5 3. c4 dxc4 4. Nc3 Nc6 5. Bg5 Qxd4 6. Bxf6 Qxd1+ 7. Rxd1 exf6 8. e3 Bb4 9. Bxc4 Bxc3+ 10. bxc3 0-0 11. Nf3 Bg4 12. Ke2 Rfd8 13. h3 Bxf3+ 14. gxf3 Ne5 15. Bb3 Kf8 16. e4 Ke7 17. Rhg1 g6 18. f4 Nc6 19. f3 Na5 20. Ba4 c6 21. Bc2 Nc4 22. Bb3 Na5 23. Bc2 Rxd1 24. Rxd1 Rd8 25. Rb1 b6 26. Bd3 Nb7 27. c4 Nc5 28. Rd1 Nxd3 29. Rxd3 Rxd3 30. Kxd3 Kd6 31. Kd4 a6 32. Kc3 Kc5 33. e5 fxe5 34. fxe5 b5 35. cxb5 axb5 36. a3 h5 37. h4 Kd5 38. f4 Ke4 39. Kb4 Kxf4 40. Kc5 Kxe5 41. Kxc6 f5 42. Kxb5 f4 43. a4 f3 44. a5 f2 45. a6 f1Q+ 46. Kb6 Qf6+ 47. Kb7 Qe7+ 48. Kb6 Qd6+ 49. Kb7 Qd7+ 50. Kb6 Kd5 51. a7 Qc6+ 52. Ka5 Kc5 53. a8Q Qb5# 0-1

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "7"]
[White "Koelle, Tobias"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A58"]
[WhiteElo "2324"]
[BlackElo "1701"]
[PlyCount "63"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. g3 g6 7. Bg2 d6 8. Nf3 Bg7 9. 0-0 0-0 10. Nc3 Nfd7 11. Rb1 Ne5 12. Nxe5 Bxe5 13. Bh6 Re8 14. Qd2 Nd7 15. h4 Bg7 16. Bxg7 Kxg7 17. h5 Nf6 18. h6+ Kg8 19. Rfe1 Qa5 20. e4 Rab8 21. e5 dxe5 22. Rxe5 Qb4 23. Qe1 c4 24. Ne4 Qb6 25. Nxf6+ Qxf6 26. Qe3 Kf8 27. Kh2 Bc8 28. b3 Bf5 29. Re1 cxb3 30. axb3 Rb4 31. Qc3 Rb5 32. Rxe7 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "10"]
[White "Privo, Laurenz"]
[Black "Schaefer, Konstantin"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "1620"]
[BlackElo "1738"]
[PlyCount "41"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. Nf3 c5 2. e3 d5 3. b3 Nc6 4. Bb2 Nf6 5. Bb5 Bd7 6. c4 a6 7. Bxc6 Bxc6 8. Ne5 Qc7 9. 0-0 e6 10. Nxc6 Qxc6 11. cxd5 exd5 12. Bxf6 Qxf6 13. Nc3 Qe6 14. d4 Rd8 15. Qf3 cxd4 16. exd4 Be7 17. Rad1 0-0 18. Rfe1 Qd6 19. Nxd5 Qxd5 20. Qxd5 Rxd5 21. Rxe7 1/2-1/2

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "11"]
[White "Schaefer, Konstantin"]
[Black "Bakiev, Diyor"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1745"]
[BlackElo "1844"]
[PlyCount "113"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Nc6 6. Bf4 g6 7. Nd2 Bg7 8. h3 0-0 9. Ngf3 Bf5 10. Bxf5 gxf5 11. 0-0 e6 12. Ne5 Nxe5 13. Bxe5 Ne4 14. Nf3 Kh8 15. Qe2 Rg8 16. Rfe1 Qe7 17. Bf4 Bf6 18. Ne5 Bxe5 19. Bxe5+ f6 20. Bf4 Qg7 21. f3 Ng5 22. Bxg5 Qxg5 23. g4 fxg4 24. fxg4 Rae8 25. Qf3 f5 26. Re5 Qg6 27. Rae1 fxg4 28. hxg4 Qxg4+ 29. Qxg4 Rxg4+ 30. Kh2 Reg8 31. Rxe6 Rg2+ 32. Kh3 Rxb2 33. Re8 Rxe8 34. Rxe8+ Kg7 35. Rd8 Rxa2 36. Rxd5 Rc2 37. Rd7+ Kg6 38. Rxb7 Rxc3+ 39. Kg4 Rc4 40. Rxa7 Rxd4+ 41. Kg3 Rd6 42. Ra5 h5 43. Kh3 Rd4 44. Kg3 Rb4 45. Kh3 Rb3+ 46. Kh4 Rb4+ 47. Kh3 Rg4 48. Rb5 Rf4 49. Ra5 Kh6 50. Rb5 Ra4 51. Rc5 Kg6 52. Rb5 Ra3+ 53. Kh4 Ra1 54. Rg5+ Kf6 55. Rxh5 Rh1+ 56. Kg4 Rxh5 57. Kxh5 1/2-1/2

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "5"]
[White "Schaefer, Konstantin"]
[Black "Boder, Jan"]
[Result "0-1"]
[ECO "B37"]
[WhiteElo "1691"]
[BlackElo "2004"]
[PlyCount "54"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 d6 7. Nc2 Bg7 8. Be2 Nd7 9. 0-0 0-0 10. Be3 Bxc3 11. bxc3 Nc5 12. f3 Qa5 13. Qd2 Be6 14. Nd4 Ne5 15. Nxe6 fxe6 16. Rab1 b6 17. Rb5 Qa4 18. Rb4 Qa6 19. Bh6 Rf7 20. Bf4 Nc6 21. Rb5 Qa4 22. Rfb1 Raf8 23. Be3 Ne5 24. R1b4 Qa6 25. Bxc5 bxc5 26. Rb7 cxb4 27. Rxb4 Qc6 0-1

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "8"]
[White "Schaefer, Konstantin"]
[Black "Buchinger, Alexis"]
[Result "1-0"]
[ECO "C52"]
[WhiteElo "1700"]
[BlackElo "1599"]
[PlyCount "47"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. 0-0 dxc3 8. Ba3 d6 9. Qb3 Qd7 10. Nxc3 Bxc3 11. Qxc3 Nf6 12. e5 dxe5 13. Nxe5 Ne4 14. Qe3 Nxe5 15. Qxe4 f6 16. f4 Qc6 17. Bd5 Qb5 18. fxe5 fxe5 19. Qxe5+ Be6 20. Qxe6+ Kd8 21. Be7+ Ke8 22. Bd6+ Kd8 23. Qe7+ Kc8 24. Qxc7# 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "9"]
[White "Schaefer, Konstantin"]
[Black "Deuer, Marius"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "1712"]
[BlackElo "1982"]
[PlyCount "57"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 9. Nf3 Nf4 10. 0-0 Nxd3 11. cxd3 Bd6 12. Nc3 0-0 13. Ne4 c5 14. Nxd6 Qxd6 15. Qe2 Nc6 16. h3 Bb7 17. b3 Rae8 18. Re1 f5 19. Bb2 Qd5 20. Nh4 g5 21. Nf3 Nd4 22. Bxd4 exd4 23. Qxe8 Rxe8 24. Rxe8+ Kf7 25. Rae1 g4 26. R8e7+ Kg6 27. hxg4 fxg4 28. R1e6+ Kh5 29. Rxh7# 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "2"]
[White "Schaefer, Konstantin"]
[Black "Fromm, Marius"]
[Result "1-0"]
[ECO "C51"]
[WhiteElo "1658"]
[BlackElo "2009"]
[PlyCount "67"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Be7 6. d4 Na5 7. Bd3 d6 8. dxe5 dxe5 9. Nxe5 Nf6 10. 0-0 0-0 11. h3 Re8 12. Kh1 b6 13. f4 Bb7 14. Qc2 Bd6 15. Nd2 Nh5 16. Ndc4 Ng3+ 17. Kg1 Nxc4 18. Nxc4 Bc5+ 19. Be3 Bxe3+ 20. Nxe3 Nxf1 21. Rxf1 Qd7 22. e5 g6 23. Ng4 Qd5 24. Nf6+ Kg7 25. Nxd5 Bxd5 26. Be4 Rad8 27. Bxd5 Rxd5 28. Qe4 c6 29. c4 Rd2 30. f5 Rxa2 31. fxg6 hxg6 32. Qf4 Rf8 33. Qf6+ Kg8 34. Rf4 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "6"]
[White "Schaefer, Konstantin"]
[Black "Reich, Elisabeth"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1686"]
[BlackElo "1630"]
[PlyCount "61"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 g6 6. c4 Bg7 7. Nc3 0-0 8. Be3 Nc6 9. Nc2 Bd7 10. Be2 a6 11. 0-0 Rb8 12. Qd2 b5 13. cxb5 axb5 14. Bxb5 Ne5 15. Be2 Rxb2 16. Rfb1 Qb8 17. Rxb2 Qxb2 18. Rb1 Qxb1+ 19. Nxb1 Rb8 20. Nc3 Rc8 21. Nd4 Nc4 22. Bxc4 Rxc4 23. Qd3 Rc8 24. Nd5 Nxd5 25. exd5 Rb8 26. Nc6 Bxc6 27. dxc6 Rc8 28. Qa6 Rc7 29. Qa8+ Bf8 30. Bh6 Rxc6 31. Qxf8# 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "3"]
[White "Serrer, David"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "1962"]
[BlackElo "1688"]
[PlyCount "66"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. d3 Bg7 6. 0-0 e6 7. c3 Ne7 8. Be3 d6 9. d4 cxd4 10. cxd4 0-0 11. Nc3 Bd7 12. Rc1 Qa5 13. Qd2 Rfc8 14. Bh6 Bh8 15. Be3 Rab8 16. b3 Be8 17. Rfd1 c5 18. dxc5 dxc5 19. Nb1 Qb4 20. Rc4 Qb6 21. b4 Bb5 22. Rxc5 Rxc5 23. Bxc5 Qc7 24. Bd6 Qb7 25. Bxb8 Qxb8 26. Qd8+ Qxd8 27. Rxd8+ Kg7 28. Nc3 Bc4 29. Ne5 Ba6 30. Nxf7 Kxf7 31. Rxh8 Kg7 32. Ra8 Nc6 33. b5 Bxb5 1-0

[Event "GER Pfingstopen U25"]
[Site "Playchess.com INT"]
[Date "2020.06.02"]
[Round "6"]
[White "Fidlin, Simon"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "1824"]
[BlackElo "1668"]
[PlyCount "39"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 c5 2. a3 Nc6 3. b4 cxb4 4. axb4 Nxb4 5. c3 Nc6 6. d4 d5 7. exd5 Qxd5 8. Na3 Nf6 9. Nb5 Qd8 10. d5 Ne5 11. Bf4 Nfd7 12. Qd4 f6 13. Nf3 Nxf3+ 14. gxf3 e5 15. dxe6 Ne5 16. Bxe5 fxe5 17. Qxe5 a6 18. Nc7+ Ke7 19. Qg5+ Kd6 20. Qxd8+ 1-0

[Event "GER Pfingstopen U25"]
[Site "Playchess.com INT"]
[Date "2020.06.02"]
[Round "5"]
[White "Haenselmann, Hendrik"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B70"]
[WhiteElo "1213"]
[BlackElo "1668"]
[PlyCount "56"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[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 Be6 10. Re1 Ne5 11. Bf1 Nc4 12. Bxc4 Bxc4 13. Qd2 Re8 14. Rad1 Qb6 15. Nd5 Nxd5 16. exd5 Bxb2 17. Rxe7 Rxe7 18. Bxe7 Be5 19. Bg5 Rc8 20. Be3 Qb5 21. f4 Bg7 22. f5 b6 23. fxg6 hxg6 24. Bf2 Re8 25. Nd4 Qxd5 26. c3 Bxa2 27. Ra1 Bc4 28. Ra6 Bxd4 0-1

[Event "GER Pfingstopen U25"]
[Site "Playchess.com INT"]
[Date "2020.06.02"]
[Round "2"]
[White "Herter, Arne"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "1493"]
[BlackElo "1668"]
[PlyCount "138"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. f3 Bd7 10. Qd2 Rc8 11. 0-0-0 Ne5 12. g4 Nc4 13. Bxc4 Rxc4 14. g5 Nh5 15. Nce2 Qb6 16. Nb3 Qa6 17. Kb1 Rfc8 18. Ng3 Rxc2 19. Qxc2 Rxc2 20. Kxc2 Qc4+ 21. Kb1 Ba4 22. Nxh5 gxh5 23. Bxa7 Bxb3 24. axb3 Qxb3 25. Bd4 Bxd4 26. Rxd4 Qxf3 27. Rc1 Qf2 28. Rb4 Qxh2 29. Rxb7 Qe5 30. Rb4 Kg7 31. Rbc4 Kg6 32. b4 Qxg5 33. Kb2 h4 34. Kb3 h3 35. Rd1 Qe3+ 36. Ka4 h2 37. Rcc1 Qxe4 38. Rh1 Qf4 39. Rcf1 Qd2 40. Rd1 Qa2+ 41. Kb5 d5 42. Kc5 Qc4+ 43. Kb6 Qxb4+ 44. Kc6 Qc4+ 45. Kd7 Qe4 46. Kc6 d4+ 47. Kc5 d3 48. Kb5 Qe2 49. Ka5 d2 50. Kb4 f5 51. Kb3 f4 52. Kc3 f3 53. Rxd2 Qe3+ 54. Kc2 f2 55. Rdd1 Qe2+ 56. Kc1 Kg5 57. Rdf1 Kg4 58. Kb1 Kg3 59. Ka1 Qxf1+ 60. Rxf1 Kg2 61. Rd1 f1Q 62. Rxf1 Kxf1 63. Ka2 h1Q 64. Ka1 Qe4 65. Ka2 Qb4 66. Ka1 Ke2 67. Ka2 Kd2 68. Ka1 Kc2 69. Ka2 Qa4# 0-1

[Event "GER Pfingstopen U25"]
[Site "Playchess.com INT"]
[Date "2020.06.02"]
[Round "1"]
[White "Popovici, Daniel"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1597"]
[BlackElo "1668"]
[PlyCount "51"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. b4 d5 2. Bb2 Nf6 3. Nf3 e6 4. a3 Be7 5. e3 0-0 6. c4 c5 7. b5 a6 8. a4 axb5 9. axb5 Rxa1 10. Bxa1 Nbd7 11. Be2 dxc4 12. Bxc4 Nb6 13. d3 Bd7 14. Qb3 Qc7 15. 0-0 Nfd5 16. e4 Nf4 17. Be5 Bd6 18. Bxd6 Qxd6 19. Nbd2 Rd8 20. Rd1 Be8 21. Nf1 Nxc4 22. Qxc4 Qd4 23. Nxd4 Rxd4 24. Qxc5 Rxd3 25. Rxd3 Nxd3 26. Qe7 1-0

[Event "GER Pfingstopen U25"]
[Site "Playchess.com INT"]
[Date "2020.06.02"]
[Round "3"]
[White "Schaefer, Konstantin"]
[Black "Lenz, Jonas"]
[Result "0-1"]
[ECO "C52"]
[WhiteElo "1668"]
[BlackElo "1954"]
[PlyCount "88"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 b5 7. Bxb5 Nxd4 8. Nxd4 exd4 9. Qxd4 Qf6 10. Bd2 Bb6 11. Qxf6 Nxf6 12. Bd3 0-0 13. 0-0 Bb7 14. e5 Ne4 15. Bxe4 Bxe4 16. Na3 Rfe8 17. Rfe1 Bd3 18. Bf4 Bc5 19. Nb1 Rab8 20. Nd2 Rb2 21. Ne4 Bxe4 22. Rxe4 Bxf2+ 23. Kf1 Bb6 24. a4 a5 25. Be3 Bxe3 26. Rxe3 d6 27. Re2 Rxe2 28. Kxe2 Rxe5+ 29. Kf3 h6 30. Rb1 Rc5 31. Rb3 Rc4 32. Ra3 f5 33. g3 Kf7 34. h4 g5 35. hxg5 hxg5 36. Kf2 Ke6 37. Kf3 Kd5 38. Ke3 Ke5 39. Kf3 c5 40. Ke3 d5 41. Kf3 d4 42. cxd4+ cxd4 43. Rb3 Rc3+ 44. Rxc3 dxc3 0-1

[Event "GER Pfingstopen U25"]
[Site "Playchess.com INT"]
[Date "2020.06.02"]
[Round "4"]
[White "Schaefer, Konstantin"]
[Black "Scheifel, Maximilian"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1668"]
[BlackElo "1620"]
[PlyCount "125"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. c4 Nc6 6. d3 Nf6 7. d4 Bg4 8. Be3 Be7 9. Bd3 0-0 10. 0-0 Re8 11. Nc3 Nd7 12. h3 Bh5 13. Nd5 Bf6 14. Nxf6+ Nxf6 15. a3 a6 16. Be2 Bg6 17. Qd2 Ne4 18. Qd1 d5 19. Qb3 Na5 20. Qa4 c6 21. Rac1 Nxc4 22. Bxc4 dxc4 23. Qxc4 Nd6 24. Qb4 a5 25. Qd2 Ne4 26. Qe2 Nf6 27. Qc4 Nd5 28. Bd2 Rc8 29. Ne5 b5 30. Qc5 Nf6 31. Nxc6 Qd7 32. Qxb5 Re6 33. d5 Nxd5 34. Nd4 Qxb5 35. Nxb5 Rec6 36. Nd4 Rxc1 37. Rxc1 Rxc1+ 38. Bxc1 Nb6 39. Bd2 Nc4 40. Bc3 Bd3 41. Nc6 Kf8 42. Nxa5 Nxa5 43. Bxa5 g6 44. Bc3 Ke7 45. f3 Kd6 46. Kf2 Kd5 47. Ke3 Kc4 48. Kf4 h5 49. g4 hxg4 50. fxg4 f5 51. g5 Be2 52. h4 Bh5 53. a4 Be2 54. a5 Kb5 55. Ke5 Bh5 56. Kf6 Ka6 57. b4 Kb5 58. Bd2 Ka6 59. Ke5 Kb5 60. Kd5 Bf3+ 61. Kd4 Bh5 62. Ke5 Bf3 63. Kf4 1/2-1/2

[Event "GER Pfingstopen U25"]
[Site "Playchess.com INT"]
[Date "2020.06.02"]
[Round "7"]
[White "Schaefer, Konstantin"]
[Black "Vaghef, Mohammad Reza"]
[Result "1/2-1/2"]
[ECO "B02"]
[WhiteElo "1668"]
[BlackElo "1548"]
[PlyCount "84"]
[EventDate "2020.06.02"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. d4 Nc6 5. Bc4 Nxc3 6. bxc3 e5 7. Be3 exd4 8. cxd4 Bb4+ 9. Bd2 Qxd4 10. Bxb4 Qxc4 11. Bd2 Qe4+ 12. Qe2 Qxe2+ 13. Nxe2 0-0 14. 0-0 Re8 15. Nc3 Bf5 16. Bf4 Bxc2 17. Bxc7 Rac8 18. Bf4 Nd4 19. Be3 Rxc3 20. Bxd4 Rc4 21. Bxa7 Ra8 22. Be3 Bd3 23. Rfd1 Be4 24. a4 h6 25. a5 g5 26. Bb6 Bc6 27. h3 g4 28. Kh2 gxh3 29. Kxh3 Kh7 30. Rac1 Rxc1 31. Rxc1 Rg8 32. g3 Rg5 33. Rd1 Rh5+ 34. Kg4 Kg6 35. Rd6+ f6 36. Rxf6+ Kxf6 37. Kxh5 Kf5 38. Kxh6 Kg4 39. Kg6 Be4+ 40. Kf6 Bc6 41. Ke6 Bf3 42. Kd6 Be4 1/2-1/2

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "6"]
[White "Grund, Erwin"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1705"]
[BlackElo "1733"]
[PlyCount "45"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. d3 Bg7 6. e4 d6 7. Nge2 0-0 8. 0-0 Nd7 9. f4 e6 10. Be3 f5 11. exf5 exf5 12. Nd5 Bxb2 13. Rb1 Bg7 14. d4 cxd4 15. Nxd4 Nxd4 16. Bxd4 Bxd4+ 17. Qxd4 Nc5 18. Nc3 a6 19. Rfe1 Qc7 20. Bd5+ Rf7 21. Bxf7+ Kxf7 22. Nd5 Qd8 23. Re7+ 1-0

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "9"]
[White "Haase, Christian"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "1712"]
[BlackElo "1713"]
[PlyCount "63"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 d5 3. Bg2 Nc6 4. c3 g6 5. 0-0 Bg7 6. d3 e5 7. Nbd2 Nge7 8. e4 d4 9. cxd4 cxd4 10. b3 0-0 11. Ba3 Re8 12. Rc1 Qa5 13. Nc4 Qd8 14. Nd6 Rf8 15. Nxc8 Rxc8 16. Bh3 Ra8 17. Nd2 Re8 18. Nc4 f5 19. Nd6 Rf8 20. exf5 Nxf5 21. Nxf5 gxf5 22. Bxf8 Qxf8 23. Qh5 Ne7 24. Rc7 e4 25. dxe4 fxe4 26. Rfc1 e3 27. Be6+ Kh8 28. fxe3 dxe3 29. Rf1 Qd8 30. Rxb7 Qd4 31. Rd7 Qc5 32. Qxc5 1-0

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "1"]
[White "Hagenbeck Huebert, Jan"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "A56"]
[WhiteElo "1482"]
[BlackElo "1731"]
[PlyCount "60"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qd1 g6 6. Bg5 Bg7 7. e3 0-0 8. Nf3 d6 9. Qc2 Be6 10. Be2 Nd7 11. 0-0 Nde5 12. b3 Qa5 13. Rac1 Rfc8 14. Rfd1 Kf8 15. Nd4 a6 16. f4 Nxd4 17. exd4 Bf5 18. Qb2 Nc6 19. Bf3 Bxd4+ 20. Kf1 Bg7 21. Bxc6 bxc6 22. Qd2 Qc5 23. g3 a5 24. Bh4 Qb4 25. Kg2 a4 26. Qb2 axb3 27. axb3 Bxc3 28. Rxc3 Ra3 29. Re1 e6 30. Rce3 e5 0-1

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "4"]
[White "Powalla, Christian"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1715"]
[BlackElo "1740"]
[PlyCount "119"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 g6 4. cxd4 d5 5. e5 Bg7 6. Nc3 Nh6 7. h3 0-0 8. g4 Nc6 9. Bb5 a6 10. Ba4 f6 11. Nxd5 fxe5 12. dxe5 Nxe5 13. Bb3 Kh8 14. Be3 e6 15. Nf4 Qe7 16. Qe2 Rd8 17. Nf3 Nxf3+ 18. Qxf3 Nf7 19. 0-0 Bxb2 20. Rab1 Bg7 21. Rfc1 Ng5 22. Qg3 Ne4 23. Qf3 Nd2 24. Bxd2 Rxd2 25. Qe3 Rd6 26. Rc4 Bd7 27. Rbc1 Bc6 28. Rc5 Re8 29. Qe2 e5 30. Nd3 e4 31. Nf4 e3 32. fxe3 Qxe3+ 33. Qxe3 Rxe3 34. Ne6 Rexe6 35. Bxe6 Rxe6 36. R5c4 Rd6 37. R1c2 Bd4+ 38. Kh2 Be5+ 39. Kg1 Rd1+ 40. Kf2 Bd4+ 41. Ke2 Bb5 42. Kxd1 Bxc4 43. Rxc4 Be5 44. Kc2 Kg7 45. Kd3 Kf6 46. Ke4 Ke6 47. Rb4 b5 48. Rb3 h5 49. gxh5 gxh5 50. Rf3 h4 51. Rf8 Ke7 52. Ra8 Bc3 53. Rxa6 b4 54. Kd3 Be1 55. Rb6 Kd7 56. Kc4 Kc7 57. Rb5 Kc6 58. Re5 Bc3 59. Kb3 Kd6 60. Re4 1-0

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "3"]
[White "Richters, Marc"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "1936"]
[BlackElo "1749"]
[PlyCount "81"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. exd5 Nf6 6. Nc3 Bg7 7. Nf3 0-0 8. Bc4 Nbd7 9. 0-0 Nb6 10. Bb3 Nbxd5 11. Ne5 e6 12. Qf3 Rb8 13. Bg5 Qd6 14. Bh4 b5 15. Bg3 Qb6 16. Nxd5 Nxd5 17. Ng4 Ra8 18. Be5 Bb7 19. Bxg7 Kxg7 20. Bxd5 exd5 21. Qf4 f5 22. Ne5 Rfe8 23. Rac1 Rac8 24. h4 h5 25. Nd7 Qe6 26. Nc5 Qf7 27. b4 Bc6 28. Rfe1 Bd7 29. Re5 Rxe5 30. Qxe5+ Kg8 31. Qd6 Bc6 32. Nd3 Qd7 33. Qg3 Bb7 34. Qxg6+ Qg7 35. Qe6+ Qf7 36. Rxc8+ Bxc8 37. Qxc8+ Kg7 38. Ne5 Qe7 39. Qxf5 Qxb4 40. Qg6+ Kf8 41. Qf7# 1-0

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "8"]
[White "Schaefer, Konstantin"]
[Black "Ho, Ngoc Hai Dang"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1729"]
[BlackElo "1742"]
[PlyCount "32"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. c3 Nf6 6. d3 d6 7. h3 h6 8. 0-0 0-0 9. a4 a5 10. b5 Ne7 11. Be3 Ng6 12. Bxb6 cxb6 13. Nbd2 Nf4 14. Re1 N6h5 15. Nh2 Qg5 16. Ndf3 Qxg2# 0-1

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "2"]
[White "Schaefer, Konstantin"]
[Black "Muckle, Richard"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "1737"]
[BlackElo "2018"]
[PlyCount "130"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Be7 5. Bd3 Nf6 6. Nf3 Bd7 7. 0-0 Nxe4 8. Bxe4 Bc6 9. Qe2 0-0 10. c3 g6 11. Bh6 Re8 12. Ne5 Bf8 13. Bxf8 Rxf8 14. f4 Bxe4 15. Qxe4 c6 16. Rf3 Nd7 17. Rh3 Nf6 18. Qf3 Kg7 19. Ng4 h5 20. Nf2 Qd5 21. Qxd5 exd5 22. Re1 Rfe8 23. Rhe3 Rxe3 24. Rxe3 Re8 25. Rxe8 Nxe8 26. Nd3 Nd6 27. Kf2 Kf6 28. Kf3 Nc4 29. h3 Ke6 30. g4 hxg4+ 31. hxg4 b6 32. Ne5 Nxe5+ 33. fxe5 f6 34. exf6 Kxf6 35. Kf4 g5+ 36. Ke3 Ke6 37. Kd3 Kd6 38. a4 c5 39. b4 Kc6 40. bxc5 bxc5 41. c4 Kd6 42. Kc3 Kc6 43. Kd3 dxc4+ 44. Kxc4 cxd4 45. Kxd4 Kb6 46. Ke5 Ka5 47. Kf5 Kxa4 48. Kxg5 a5 49. Kf6 Kb3 50. g5 a4 51. g6 a3 52. g7 Kb2 53. g8Q a2 54. Qb8+ Kc2 55. Qc7+ Kb2 56. Qb6+ Kc2 57. Qc5+ Kb2 58. Qb4+ Kc2 59. Qd4 Kb1 60. Qd3+ Kb2 61. Qd2+ Kb1 62. Qb4+ Ka1 63. Qc3+ Kb1 64. Qb3+ Ka1 65. Qxa2+ Kxa2 1/2-1/2

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "5"]
[White "Schaefer, Konstantin"]
[Black "Sossna, Gerald"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1722"]
[BlackElo "1584"]
[PlyCount "53"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d4 exd4 5. c3 d3 6. 0-0 d6 7. Qb3 Na5 8. Bxf7+ Kf8 9. Qa4 c6 10. Bc4 b5 11. Bxb5 cxb5 12. Qxb5 Nf6 13. e5 Ng4 14. exd6 Bxd6 15. b4 Nb7 16. Re1 a6 17. Qc6 Ne5 18. Qe4 Nxf3+ 19. Qxf3+ Qf6 20. Qxd3 Bf5 21. Qd5 Rb8 22. Nd2 g6 23. Ne4 Qe5 24. Qc4 Qxh2+ 25. Kf1 Qe5 26. Nxd6 Qxd6 27. Bh6# 1-0

[Event "GER Cup Net V4 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.31"]
[Round "7"]
[White "Schaefer, Konstantin"]
[Black "Weber, Michael"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1715"]
[BlackElo "1658"]
[PlyCount "141"]
[EventDate "2020.05.31"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. 0-0 0-0 8. h3 h6 9. c3 c6 10. Bf4 Re8 11. Nbd2 Nxd2 12. Qxd2 Nd7 13. Rae1 Nf6 14. Ne5 Bd6 15. Re2 Nh5 16. Bxh6 Bxe5 17. dxe5 g6 18. g4 Ng7 19. f4 Qh4 20. f5 Qxh3 21. fxg6 fxg6 22. Bxg6 Re6 23. Bf7+ Kh7 24. Rh2 Qxg4+ 25. Qg2 Qxg2+ 26. Kxg2 Rxh6 27. Rfh1 Nf5 28. Rxh6+ Nxh6 29. e6 Bxe6 30. Bxe6 Re8 31. Bg4 Kg7 32. Bf3 Nf5 33. Kf2 Nh6 34. Rg1+ Kf6 35. Rh1 Nf5 36. Rh7 Re7 37. Rh8 b6 38. Rc8 Re6 39. Rc7 Ke5 40. Rxa7 b5 41. a4 bxa4 42. Rxa4 Nd6 43. Ra6 Nc4 44. b3 Nd2 45. b4 Rf6 46. Ke2 Nxf3 47. b5 Ng1+ 48. Kd3 cxb5 49. Ra5 Rb6 50. Kc2 Kd6 51. Kb3 Nf3 52. Kb4 Kc6 53. Ra8 Rb7 54. Rc8+ Kd7 55. Rh8 Nd2 56. Rh7+ Kc6 57. Rh6+ Kc7 58. Rh7+ Kb8 59. Rh8+ Ka7 60. Rd8 d4 61. cxd4 Ne4 62. d5 Nd2 63. d6 Ne4 64. d7 Nf6 65. Ra8+ Kxa8 66. d8Q+ Rb8 67. Qxf6 Rb7 68. Qc6 Ka7 69. Qc5+ Ka6 70. Qc6+ Rb6 71. Qa8# 1-0

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "1"]
[White "Braeutigam, Katerina"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1506"]
[BlackElo "1712"]
[PlyCount "100"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. f4 Nge7 8. Nf3 0-0 9. 0-0 b6 10. d4 Bb7 11. Kh1 f5 12. dxc5 bxc5 13. e5 dxe5 14. fxe5 Nxe5 15. Bxc5 Qxd1 16. Raxd1 N5c6 17. Ba3 Rfd8 18. Bxe7 Nxe7 19. Rfe1 Kf7 20. Na4 Bxf3 21. Bxf3 Rab8 22. c3 Rxd1 23. Rxd1 e5 24. Rd7 Ke6 25. Rxa7 e4 26. Be2 Rd8 27. Kg2 Rd2 28. Kf2 Bh6 29. Ke1 e3 30. Ra6+ Kd7 31. Ra7+ Kd8 32. Ra8+ Kd7 33. Ra7+ Ke8 34. Ra8+ Rd8 35. Rxd8+ Kxd8 36. Nc5 Kc7 37. Nb3 Kb6 38. Nd4 Nc6 39. Nxc6 Kxc6 40. a4 Bg7 41. Kd1 g5 42. Kc2 f4 43. gxf4 gxf4 44. Bf3+ Kc5 45. b4+ Kc4 46. b5 Bxc3 47. b6 Kb4 48. b7 Be5 49. Bc6 Kc5 50. Be4 Kb6 0-1

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "5"]
[White "Kestler, Martin"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1958"]
[BlackElo "1712"]
[PlyCount "79"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. Nf3 c5 2. b3 d5 3. Bb2 Nc6 4. e3 a6 5. d4 e6 6. Be2 b5 7. c4 bxc4 8. bxc4 Rb8 9. Bc3 Nf6 10. 0-0 Be7 11. Nbd2 0-0 12. Qa4 Qc7 13. Rfb1 dxc4 14. Nxc4 Nd5 15. Bd2 Bd7 16. Qd1 cxd4 17. exd4 Bf6 18. Nce5 Nxd4 19. Rxb8 Rxb8 20. Rc1 Nc6 21. Nxc6 Bxc6 22. Bxa6 Qd7 23. Bc4 Bb5 24. Rb1 Rb7 25. Bxb5 Rxb5 26. h3 h6 27. Rxb5 Qxb5 28. Qb3 Qe2 29. a4 e5 30. Qxd5 e4 31. Qa8+ Kh7 32. Be3 exf3 33. Qxf3 Qe1+ 34. Kh2 Be5+ 35. g3 Qb4 36. Qf5+ g6 37. Qxe5 Qxa4 38. Bd4 f6 39. Qxf6 Qd7 40. Qh8# 1-0

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "8"]
[White "Noack, Mario"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1626"]
[BlackElo "1712"]
[PlyCount "102"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nc6 3. Bg2 Nf6 4. Nc3 e6 5. e4 Be7 6. Nge2 0-0 7. 0-0 d6 8. a3 Bd7 9. Rb1 Qc7 10. d3 Rfb8 11. f4 a6 12. h3 b5 13. g4 b4 14. axb4 cxb4 15. Na4 b3 16. Nac3 a5 17. Ra1 Nb4 18. Be3 Nc2 19. Qd2 Nxa1 20. Rxa1 a4 21. Nd4 e5 22. Ndb5 Qc8 23. g5 Ne8 24. Rxa4 Rxa4 25. Nxa4 Bxb5 26. cxb5 Rxb5 27. Nc3 Rb8 28. Nd5 Bf8 29. fxe5 dxe5 30. Nc3 Nc7 31. d4 Nb5 32. Nxb5 Rxb5 33. dxe5 Qc2 34. Qd4 Bc5 35. Qd2 Qxd2 36. Bxc5 Rxc5 37. e6 Rc1+ 38. Kh2 Rc2 39. Kg3 Qf2+ 40. Kg4 Qxg2+ 41. Kf4 Rf2+ 42. Ke5 Qg3+ 43. Kd5 Rd2+ 44. Kc4 Qd3+ 45. Kc5 Rc2+ 46. Kb4 Rc4+ 47. Ka3 fxe6 48. g6 hxg6 49. e5 Rc5 50. Kb4 Qc4+ 51. Ka3 Ra5# 0-1

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "9"]
[White "Peters, Michael"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "A56"]
[WhiteElo "1655"]
[BlackElo "1712"]
[PlyCount "142"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qd3 g6 6. e4 Bg7 7. f4 0-0 8. a3 d6 9. Nf3 b6 10. Be2 Bb7 11. 0-0 Qc7 12. b4 Rac8 13. Bb2 a5 14. b5 Nb8 15. Nd2 Nbd7 16. Na4 Rfd8 17. Rac1 Nc5 18. Nxc5 dxc5 19. Qe3 Nd5 20. Qb3 Bxb2 21. Qxb2 Nxf4 22. Bg4 e6 23. Rcd1 Nd3 24. Qc3 Qe5 25. Qxe5 Nxe5 26. Bf3 Rd3 27. Nb1 Rcd8 28. Kf2 Nxc4 29. Rxd3 Rxd3 30. Be2 Rd4 31. Bxc4 Rxc4 32. Nd2 Rd4 33. Ke3 Kg7 34. Rf2 f5 35. exf5 exf5 36. Nb3 Re4+ 37. Kd3 Kf6 38. Kc3 Ke5 39. Rd2 Re3+ 40. Kc2 Bd5 41. Nc1 Be4+ 42. Kb2 Bd5 43. Nd3+ Ke4 44. Nf2+ Ke5 45. Nd3+ Kd6 46. Nf4 Re5 47. Nd3 Re4 48. Nf2 Rd4 49. Re2 Be4 50. Nxe4+ Rxe4 51. Rd2+ Ke5 52. Rd7 Re2+ 53. Kc3 Rxg2 54. Rb7 f4 55. Rxb6 f3 56. Rb8 Rg5 57. Re8+ Kd6 58. Re1 f2 59. Rf1 Rf5 60. Kc4 g5 61. b6 Kc6 62. b7 Kxb7 63. Kb5 h5 64. Kxa5 g4 65. Kb5 h4 66. Kc4 g3 67. hxg3 hxg3 68. Rb1+ Kc7 69. a4 g2 70. a5 f1Q+ 71. Rxf1 gxf1Q+ 0-1

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "7"]
[White "Schaefer, Konstantin"]
[Black "Benicke, Bastian"]
[Result "1-0"]
[ECO "B55"]
[WhiteElo "1712"]
[BlackElo "1558"]
[PlyCount "31"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 a6 6. c4 e5 7. Nf5 g6 8. Nh6 Qb6 9. Nc3 Bxh6 10. Bxh6 Qxb2 11. Rc1 Nbd7 12. Be2 Ke7 13. 0-0 b6 14. Rc2 Qa3 15. Nd5+ Ke6 16. Nc7+ 1-0

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "2"]
[White "Schaefer, Konstantin"]
[Black "Fabregas, Oliver"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1712"]
[BlackElo "1923"]
[PlyCount "116"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 Qc8 8. Nd2 e6 9. Ngf3 Be7 10. 0-0 0-0 11. Ne5 Bh5 12. Ndf3 Bg6 13. Nxg6 hxg6 14. Ne5 Nd7 15. Rae1 Bf6 16. Nxc6 Qxc6 17. Bb5 Qc8 18. Bxd7 Qxd7 19. Be5 Bxe5 20. Rxe5 Rac8 21. f4 Rfe8 22. Qd1 Qb5 23. Rf2 a5 24. Qg4 a4 25. a3 Qd7 26. Qh4 Qe7 27. Qh3 Qf6 28. g4 Qe7 29. g5 b5 30. Rfe2 Qc7 31. Qh4 Qc4 32. R5e3 Red8 33. Kf2 Qc7 34. Rh3 Kf8 35. Kf3 Ke7 36. Qh7 Rg8 37. Qh4 Kd7 38. Qg4 Kc6 39. Rg3 Rh8 40. h4 Kb7 41. Rh3 Qc4 42. Kf2 Ka6 43. h5 gxh5 44. Rxh5 g6 45. Rh6 Qd3 46. Qh4 Rhd8 47. Rh7 Rd7 48. Qg4 Rcc7 49. Rh8 Kb7 50. Rf8 Qd1 51. Qg1 Qd3 52. Qg3 Qf5 53. Qf3 Rc8 54. Rxc8 Kxc8 55. Re5 Qc2+ 56. Re2 Qf5 57. Re5 Qc2+ 58. Re2 Qf5 1/2-1/2

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "6"]
[White "Schaefer, Konstantin"]
[Black "Schenk, Jonatan"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "1712"]
[BlackElo "1566"]
[PlyCount "66"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Qa5 9. f3 Be7 10. Bf4 e5 11. Bg5 Be6 12. Be2 0-0 13. 0-0 Qb6+ 14. Kh1 Qxb2 15. Qb3 Qxb3 16. axb3 Nd4 17. Rab1 h6 18. Be3 Nxe2 19. Nxe2 Bd7 20. Rfd1 d5 21. Nc2 d4 22. Bd2 d3 23. Bb4 dxc2 24. Bxe7 cxb1Q 25. Rxb1 Rfe8 26. Bd6 Rac8 27. c5 Bb5 28. Nc3 Bd3 29. Rb2 b6 30. b4 bxc5 31. bxc5 Nd7 32. Na4 Bb5 33. Nb6 Rc6 0-1

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "4"]
[White "Schaefer, Konstantin"]
[Black "Tschendel, Roland"]
[Result "1/2-1/2"]
[ECO "B37"]
[WhiteElo "1712"]
[BlackElo "1625"]
[PlyCount "100"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 g6 6. c4 Bg7 7. Nc3 0-0 8. Be2 Nc6 9. Nc2 Be6 10. 0-0 Rc8 11. Be3 Na5 12. b3 Ng4 13. Bd4 Bxd4+ 14. Qxd4 Nc6 15. Qd2 Nf6 16. Rac1 Qa5 17. Nd4 Nxd4 18. Qxd4 b6 19. Rfd1 Qc5 20. Nb5 a6 21. Nc3 Rc7 22. Qxc5 bxc5 23. Nd5 Nxd5 24. cxd5 Bd7 25. Bxa6 Re8 26. b4 Rd8 27. bxc5 dxc5 28. Rc2 Ra7 29. Bc4 Ba4 30. Bb3 Bxb3 31. axb3 Rb7 32. Rxc5 Rxb3 33. Rdc1 Kg7 34. Kf2 Ra8 35. R1c2 Ra7 36. Kg3 h5 37. Kf4 f6 38. h4 Kh6 39. R2c3 g5+ 40. hxg5+ fxg5+ 41. Kf5 Rb2 42. Rc6+ Kg7 43. Kxg5 Rxg2+ 44. Kxh5 Ra8 45. Rc8 Ra1 46. Rc1 Ra6 47. R8c6 Ra8 48. Rc8 Ra6 49. R1c6 Ra1 50. Rc1 Ra6 1/2-1/2

[Event "GER Cup Net V3 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.27"]
[Round "3"]
[White "Schaller, Torsten"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1874"]
[BlackElo "1712"]
[PlyCount "37"]
[EventDate "2020.05.27"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 e6 7. Nc3 Nge7 8. c5 a6 9. Be2 0-0 10. h4 f5 11. Nxc6 bxc6 12. Qd2 Qa5 13. h5 fxe4 14. hxg6 Nxg6 15. Rc1 Bb7 16. Qxd7 Rf7 17. Qxe6 Raf8 18. Bc4 Bc8 19. Qd6 1-0

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "5"]
[White "Friemel, Reinhard"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1648"]
[BlackElo "1702"]
[PlyCount "101"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 a6 6. Nge2 e6 7. 0-0 Nge7 8. d3 0-0 9. a3 b6 10. Bg5 Qc7 11. Be3 Bb7 12. Rb1 d6 13. h3 Rad8 14. f4 f5 15. Kh2 Nd4 16. Bxd4 cxd4 17. Na2 fxe4 18. dxe4 e5 19. Qd3 a5 20. b4 Ba6 21. b5 Bb7 22. Nac1 Rc8 23. f5 Qxc4 24. g4 d5 25. g5 Qxd3 26. Nxd3 dxe4 27. Ng3 Nd5 28. Bxe4 gxf5 29. Bxd5+ Bxd5 30. Nxf5 Be4 31. Ne7+ Kh8 32. Nxc8 Rxf1 33. Rxf1 Bxd3 34. Re1 Bf5 35. Nd6 Bc2 36. Nf7+ Kg8 37. Nxe5 Bxe5+ 38. Rxe5 d3 39. Rd5 Kf7 40. Kg3 Ke6 41. Rd8 Ke5 42. Kf3 Bd1+ 43. Ke3 Be2 44. h4 Kf5 45. Rd4 Ke5 46. Re4+ Kf5 47. Re7 Kg6 48. Re6+ Kh5 49. Rh6+ Kg4 50. Rxh7 Bf1 51. g6 1-0

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "2"]
[White "Heinrich, John"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1237"]
[BlackElo "1742"]
[PlyCount "59"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 b6 9. 0-0 Bb7 10. f3 Rc8 11. Qd2 d6 12. Rfd1 Ne5 13. b3 Qe8 14. Rac1 Ba6 15. Bf1 Qd7 16. h3 Rfd8 17. f4 Nc6 18. Be2 Bb7 19. Bf3 e5 20. Ndb5 Bf8 21. Nd5 Nxd5 22. exd5 Ne7 23. Nxa7 Ra8 24. Nb5 Nf5 25. Bxb6 Rdc8 26. Bg4 h5 27. Bxf5 Qxf5 28. Rf1 e4 29. a4 Bg7 30. Nxd6 1-0

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "9"]
[White "Hofmann, Matthias1111"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1622"]
[BlackElo "1703"]
[PlyCount "98"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. d3 g6 4. Bg5 Bg7 5. f4 a6 6. Nf3 e6 7. g3 Nge7 8. Bg2 0-0 9. 0-0 d5 10. e5 b5 11. Qd2 Qd7 12. Rae1 Nf5 13. Nd1 h6 14. Bh4 Nxh4 15. Nxh4 b4 16. c3 a5 17. d4 c4 18. Nf3 Qe7 19. Ne3 Bd7 20. Nc2 Rfb8 21. Rb1 b3 22. axb3 Rxb3 23. Na1 Rb6 24. Nc2 Rab8 25. Nce1 a4 26. Rf2 a3 27. Qc1 Be8 28. Bf1 Qb7 29. Bg2 a2 30. Ra1 Rxb2 31. Rxb2 Qxb2 32. Qxb2 Rxb2 33. Kf1 Na5 34. Bh3 Nb3 35. Rxa2 Rxa2 36. g4 Nd2+ 37. Nxd2 Rxd2 38. f5 exf5 39. gxf5 Bd7 40. e6 fxe6 41. fxe6 Be8 42. e7 Kf7 43. Be6+ Kxe6 44. Nf3 Kxe7 45. Nxd2 Bd7 46. Ke2 Bf5 47. Kf3 Bf6 48. Kf4 Bg5+ 49. Kf3 Bxd2 0-1

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "8"]
[White "Meschke, Andreas"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1855"]
[BlackElo "1713"]
[PlyCount "37"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. 0-0 e6 8. Bb3 Ne7 9. Re1 0-0 10. Nc3 d5 11. Bg5 Re8 12. Bxe7 Rxe7 13. Qf3 Qc7 14. exd5 cxd5 15. Bxd5 exd5 16. Nxd5 Rxe1+ 17. Rxe1 Qd7 18. Ne7+ Kf8 19. Qxa8 1-0

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "6"]
[White "Schaefer, Konstantin"]
[Black "Abel, Anais"]
[Result "1-0"]
[ECO "B55"]
[WhiteElo "1682"]
[BlackElo "1594"]
[PlyCount "101"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 a6 6. c4 e5 7. Nf5 d5 8. cxd5 Nxd5 9. Nxg7+ Bxg7 10. Qxd5 Qxd5 11. exd5 0-0 12. Nc3 Rd8 13. Be3 Nd7 14. 0-0-0 b5 15. a3 Bb7 16. Bd3 Rac8 17. Kb1 Nf6 18. Bf5 Ra8 19. d6 Bf8 20. d7 Be7 21. Bb6 Rf8 22. Ne4 Nxe4 23. fxe4 Bd8 24. Bxd8 Rfxd8 25. Rc1 Kf8 26. Rc7 Rab8 27. Rd1 Ke7 28. Rd5 Bxd5 29. exd5 Kd6 30. Rc6+ Kxd5 31. Rxa6 e4 32. Kc2 Ke5 33. g4 h5 34. h3 hxg4 35. hxg4 Kf4 36. Kd2 e3+ 37. Ke2 Ra8 38. Rd6 Ra7 39. Rd4+ Ke5 40. Kxe3 Rc7 41. Rb4 Rc5 42. Re4+ Kd6 43. Kd3 Rd5+ 44. Kc3 Rd1 45. Kb4 Rb1 46. Re2 Rd1 47. Kxb5 Rb8+ 48. Kc4 Rc1+ 49. Kd3 Rb3+ 50. Kd2 Rc5 51. d8Q+ 1-0

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "1"]
[White "Schaefer, Konstantin"]
[Black "Klein, Andreas"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1735"]
[BlackElo "1485"]
[PlyCount "69"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 Qa5+ 6. N1c3 Bb4 7. Nd6+ Bxd6 8. Qxd6 Nf6 9. Bd2 Qe5 10. Bf4 Qxd6 11. Bxd6 a6 12. a4 b6 13. Bc7 Nb4 14. 0-0-0 Bb7 15. f3 b5 16. axb5 axb5 17. Bxb5 0-0 18. Bd6 Nc6 19. Bxf8 Kxf8 20. Kb1 d5 21. exd5 exd5 22. Nxd5 Nxd5 23. Rxd5 Nb4 24. Rd7 Bc6 25. Bxc6 Nxc6 26. Rhd1 Ne5 27. Rd8+ Rxd8 28. Rxd8+ Ke7 29. Rd5 f6 30. Rxe5+ fxe5 31. b4 Kd7 32. c4 h6 33. Kc2 g5 34. Kd3 Kc6 35. Ke4 1-0

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "4"]
[White "Schaefer, Konstantin"]
[Black "Nagy, Zoltan1111"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "1705"]
[BlackElo "1615"]
[PlyCount "120"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bd3 Ngf6 6. Ne2 Be7 7. 0-0 0-0 8. Bf4 b6 9. N4c3 a6 10. Ng3 Bb7 11. Nge4 Rc8 12. Re1 c5 13. dxc5 Nxc5 14. Nxc5 Bxc5 15. Ne4 Nxe4 16. Bxe4 Bxe4 17. Rxe4 Qxd1+ 18. Rxd1 Rfd8 19. Ree1 Kf8 20. Kf1 Ke8 21. Ke2 Ke7 22. c3 b5 23. Kf3 Rxd1 24. Rxd1 Rd8 25. Rxd8 Kxd8 26. g4 Kd7 27. h4 Kc6 28. h5 Kd5 29. b3 Ba3 30. Be3 Bb2 31. Bd2 f6 32. Kf4 g6 33. hxg6 hxg6 34. f3 e5+ 35. Ke3 Ba3 36. Kd3 Bf8 37. Be1 Bh6 38. Bh4 f5 39. gxf5 gxf5 40. Bf6 e4+ 41. fxe4+ fxe4+ 42. Ke2 Bf4 43. Bd4 Bc1 44. Bb6 Bf4 45. Bd4 a5 46. Bb6 a4 47. Bd4 Be5 48. Bxe5 Kxe5 49. Ke3 Kd5 50. Kf4 axb3 51. axb3 b4 52. cxb4 Kd4 53. b5 Kd3 54. b6 e3 55. b7 e2 56. b8Q e1Q 57. Qd6+ Kc2 58. Qc5+ Kb2 59. Qe5+ Qxe5+ 60. Kxe5 Kxb3 1/2-1/2

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "7"]
[White "Schaefer, Konstantin"]
[Black "Platz, Daniel1111"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1696"]
[BlackElo "1622"]
[PlyCount "95"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nce2 c5 6. c3 Nc6 7. f4 Qb6 8. Nf3 Be7 9. a3 f6 10. b4 cxd4 11. cxd4 fxe5 12. fxe5 0-0 13. Qd3 a5 14. b5 Nd8 15. a4 Bb4+ 16. Bd2 Bxd2+ 17. Qxd2 Nf7 18. Nf4 Re8 19. Bd3 Qd8 20. 0-0 Ng5 21. Rf2 Nf8 22. Raf1 b6 23. Qc2 Ra7 24. Nxg5 Qxg5 25. Qc6 Qd8 26. Rc2 Bd7 27. Qd6 Qb8 28. Qxb8 Rxb8 29. Rfc1 g6 30. Rc7 Rbb7 31. Rxb7 Rxb7 32. Kf2 Kf7 33. Kg3 Ke7 34. h4 Kd8 35. Kg4 Rc7 36. Rxc7 Kxc7 37. Kg5 Kd8 38. Kf6 Ke8 39. Kg7 Ke7 40. h5 g5 41. Nh3 Be8 42. g4 Bxh5 43. gxh5 g4 44. Nf4 g3 45. Bxh7 Nxh7 46. Kxh7 Kf7 47. Kh6 Kg8 48. Kg6 1-0

[Event "GER Cup Net V2 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.22"]
[Round "3"]
[White "Schaefer, Konstantin"]
[Black "Sossna, Gerald"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "1709"]
[BlackElo "1627"]
[PlyCount "85"]
[EventDate "2020.05.22"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d4 d6 5. dxe5 Nxe5 6. Nxe5 dxe5 7. 0-0 Nf6 8. Nc3 0-0 9. Bg5 h6 10. Bh4 Bg4 11. f3 Bd7 12. Bg3 Bd6 13. Nb5 Bxb5 14. Bxb5 c6 15. Bc4 Nh5 16. Bf2 Qe7 17. c3 a6 18. Qc2 Bc5 19. Rad1 Rad8 20. Kh1 Bxf2 21. Rxf2 Nf4 22. Rfd2 Rxd2 23. Rxd2 Rd8 24. Qd1 Rxd2 25. Qxd2 b5 26. Bb3 Ne6 27. Kg1 Nc5 28. Kf2 Nxb3 29. axb3 Qc5+ 30. Qe3 Qxe3+ 31. Kxe3 Kf8 32. f4 f6 33. f5 Ke7 34. Kd3 Kd6 35. c4 b4 36. Ke3 Kc5 37. Kd3 a5 38. g3 h5 39. h3 Kd6 40. Ke3 Kc5 41. Kd3 Kd6 42. Ke3 Kc5 43. Kd3 1/2-1/2

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "2"]
[White "Hadlich, Gerald"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "1576"]
[BlackElo "1744"]
[PlyCount "74"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. 0-0 Bg7 6. Nc3 d6 7. d3 Nf6 8. Re1 0-0 9. e5 Nd5 10. exd6 exd6 11. Nxd5 cxd5 12. d4 Bg4 13. c3 Re8 14. Rxe8+ Qxe8 15. Be3 c4 16. h3 Bf5 17. g4 Be4 18. Ng5 h6 19. Nxe4 dxe4 20. Qd2 Kh7 21. d5 f5 22. Bd4 Qf7 23. Bxg7 Qxg7 24. Qf4 Qf6 25. Re1 Re8 26. f3 Qe5 27. Qxe5 Rxe5 28. fxe4 fxe4 29. Kf2 Kg7 30. Rd1 Kf6 31. Ke3 Kg5 32. Rf1 Kh4 33. Kd4 e3 34. Re1 e2 35. Kxc4 Kg3 36. Kd3 Kf2 37. Kd2 Rxd5+ 0-1

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "1"]
[White "Hein, Ralf1111"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1609"]
[BlackElo "1768"]
[PlyCount "47"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. e4 d6 6. d3 Bg7 7. Nge2 0-0 8. 0-0 Bd7 9. h3 Ne8 10. Kh2 Nc7 11. f4 f5 12. Rb1 Kh8 13. b3 e5 14. Bb2 exf4 15. Nxf4 Nd4 16. Ncd5 Nce6 17. exf5 Nxf4 18. Rxf4 Bxf5 19. Bxd4 Bxd4 20. Qf1 Be5 21. Rf3 Qd7 22. Nf4 g5 23. Nd5 g4 24. hxg4 1-0

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "8"]
[White "Meschke, Andreas"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1881"]
[BlackElo "1765"]
[PlyCount "55"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 g6 4. c3 Nf6 5. e5 Ng4 6. d4 cxd4 7. cxd4 d5 8. exd6 Qxd6 9. 0-0 Bg7 10. Be3 0-0 11. Nc3 Rd8 12. Nb5 Qb4 13. Qe2 Nxe3 14. fxe3 Bh6 15. Rac1 a6 16. a3 Qa5 17. Nc3 Bg4 18. Bxf7+ Kxf7 19. Ne5+ Kg8 20. Nxg4 Bg7 21. Qc4+ Kh8 22. Qe6 Rd6 23. Qe4 Qg5 24. Nf2 Bh6 25. Rce1 Rad8 26. Nh3 Qh5 27. Nf4 Bxf4 28. Rxf4 1-0

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "5"]
[White "Niemann, Alexander"]
[Black "Schaefer, Konstantin"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1620"]
[BlackElo "1742"]
[PlyCount "65"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nc6 4. cxd4 d5 5. e5 g6 6. Nf3 Bg4 7. Be3 Nh6 8. Bd3 Nf5 9. Bxf5 Bxf5 10. Nc3 Bg7 11. Qd2 0-0 12. Bh6 Be4 13. Bxg7 Kxg7 14. Ng5 Bxg2 15. Rg1 Be4 16. h4 h5 17. Ngxe4 dxe4 18. Rd1 Qd7 19. Qg5 Kh7 20. d5 Nb4 21. Nxe4 Nxd5 22. Nc3 e6 23. Ne4 Qb5 24. Rxd5 exd5 25. Nf6+ Kg7 26. Qxh5 Qb4+ 27. Kf1 Qc4+ 28. Ke1 Qc1+ 29. Ke2 Qc2+ 30. Ke3 Qc5+ 31. Ke2 Qc2+ 32. Kf1 Qc1+ 33. Ke2 1/2-1/2

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "6"]
[White "Schaefer, Konstantin"]
[Black "Friemel, Reinhard"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1740"]
[BlackElo "1623"]
[PlyCount "75"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nce2 g6 6. c3 c5 7. f4 Nc6 8. Nf3 Qb6 9. a3 cxd4 10. cxd4 Na5 11. b4 Nc4 12. Nc3 a5 13. Bxc4 dxc4 14. b5 Be7 15. 0-0 0-0 16. a4 Bb4 17. Ne4 Rd8 18. Bd2 Bxd2 19. Qxd2 Kg7 20. Nfg5 h6 21. Nf3 Qc7 22. g4 b6 23. Nd6 Bb7 24. f5 Bxf3 25. Rxf3 exf5 26. gxf5 g5 27. h4 Nxe5 28. dxe5 Qc5+ 29. Kh1 Qxe5 30. Rd1 g4 31. Re3 c3 32. Rxe5 cxd2 33. Rxd2 Ra7 34. Red5 Rf8 35. Ne4 h5 36. f6+ Kg6 37. Rg5+ Kh6 38. Rdd5 1-0

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "9"]
[White "Schaefer, Konstantin"]
[Black "Hasic, Mirza"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1754"]
[BlackElo "1726"]
[PlyCount "76"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nf3 Nbd7 4. Bc4 Nxe4 5. Qe2 Ndf6 6. 0-0 d5 7. Bb3 e6 8. Ne5 Be7 9. f4 0-0 10. Be3 c5 11. c3 Bd7 12. Nd2 Nxd2 13. Bxd2 Ne4 14. Bc2 f5 15. Bxe4 dxe4 16. Be3 Rc8 17. g4 cxd4 18. Bxd4 Bc6 19. g5 g6 20. h4 Qe8 21. Kf2 Bb5 22. c4 Bc6 23. Kg3 b5 24. b3 bxc4 25. bxc4 Qd8 26. Be3 Bd6 27. Rh1 Qc7 28. Bd4 Rfe8 29. h5 Bxe5 30. Bxe5 Qf7 31. hxg6 Qxg6 32. Rh6 Qf7 33. Rah1 e3 34. R1h4 Re7 35. Rf6 Qe8 36. Qh2 Rcc7 37. g6 Rg7 38. Rxh7 Rxg6+ 0-1

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "3"]
[White "Schaefer, Konstantin"]
[Black "Heutling, Elina"]
[Result "0-1"]
[ECO "C58"]
[WhiteElo "1753"]
[BlackElo "1633"]
[PlyCount "40"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 9. Nf3 Bd6 10. 0-0 0-0 11. Re1 Re8 12. Bf1 Bg4 13. d3 f5 14. c4 Nf6 15. Nc3 e4 16. dxe4 fxe4 17. Bg5 Qc7 18. Bxf6 exf3 19. Bh4 Bxh2+ 20. Kh1 fxg2+ 0-1

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "7"]
[White "Schaefer, Konstantin"]
[Black "Ho, Ngoc Hai Dang"]
[Result "1-0"]
[ECO "C53"]
[WhiteElo "1751"]
[BlackElo "1685"]
[PlyCount "43"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bb6 5. c3 d6 6. d4 Qe7 7. a4 a5 8. b5 Nd8 9. 0-0 Nf6 10. Ba3 Nxe4 11. dxe5 0-0 12. Qd5 Nc5 13. Nbd2 Be6 14. Qd4 dxe5 15. Nxe5 Bxc4 16. Ndxc4 Nb3 17. Bxe7 Nxd4 18. Bxf8 Ne2+ 19. Kh1 Kxf8 20. Nd7+ Ke7 21. Ndxb6 cxb6 22. Rfe1 1-0

[Event "GER Cup Net V1 U2000"]
[Site "Playchess.com INT"]
[Date "2020.05.19"]
[Round "4"]
[White "Schaefer, Konstantin"]
[Black "Sossna, Gerald"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1730"]
[BlackElo "1608"]
[PlyCount "61"]
[EventDate "2020.05.19"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d4 d6 5. 0-0 Nf6 6. Nc3 0-0 7. Be3 exd4 8. Nxd4 Ne5 9. Bb3 a6 10. f4 Ned7 11. Nf5 Nc5 12. Bxc5 dxc5 13. Qf3 Bxf5 14. exf5 c6 15. g4 Qd4+ 16. Kh1 Rad8 17. Rad1 Qb4 18. g5 Nd7 19. Rfe1 Rfe8 20. g6 c4 21. a3 Qc5 22. gxf7+ Kxf7 23. Qh5+ Kg8 24. Ne4 Qb6 25. Bxc4+ Kh8 26. Nd6 Nf6 27. Nf7+ Kg8 28. Ng5+ Kh8 29. Qf7 Rxd1 30. Qg8+ Nxg8 31. Nf7# 1-0

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "12"]
[White "Artukovic, Benjamin"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "D06"]
[WhiteElo "1620"]
[BlackElo "1768"]
[PlyCount "94"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 d5 5. cxd5 Nxd5 6. g3 g6 7. Bg2 Bg7 8. Qa4+ Bd7 9. Qd1 Qa5+ 10. Bd2 Qc5 11. Nb3 Qd6 12. Bf4 Nxf4 13. Qxd6 exd6 14. Bxb7 Bc6 15. Bxc6+ Nxc6 16. gxf4 Bxb2 17. N1d2 Bxa1 18. Nxa1 0-0 19. 0-0 Rfe8 20. e3 Rab8 21. Nab3 Nb4 22. a3 Nc2 23. a4 Rec8 24. Rd1 Na3 25. Nd4 Nc4 26. Ne4 d5 27. Nf6+ Kg7 28. Nxd5 Nd6 29. Kg2 Ne4 30. Kf3 Nc3 31. Nxc3 Rxc3 32. Ra1 f5 33. a5 Rb4 34. Ra2 Rxd4 35. Kg2 Rd5 36. a6 Rc6 37. h4 Rdd6 38. Rb2 Rb6 39. Rc2 Rf6 40. Rc7+ Rf7 41. Rc8 Rxa6 42. Kf3 Ra2 43. h5 a5 44. hxg6 hxg6 45. e4 Ra3+ 46. Kg2 fxe4 47. Re8 Rxf4 0-1

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "2"]
[White "Ho, Ngoc Hai Dang"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B35"]
[WhiteElo "1620"]
[BlackElo "1768"]
[PlyCount "68"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qb6 8. Nb3 Qb4 9. Bd3 Nxe4 10. Bxe4 Bxc3+ 11. bxc3 Qxe4 12. 0-0 0-0 13. Nd4 d5 14. Rb1 e5 15. Nb5 Rd8 16. Nc7 Rb8 17. Bxa7 Nxa7 18. Na6 Nc6 19. Nc7 Bg4 20. f3 Qe3+ 21. Kh1 Bf5 22. Nxd5 Qc5 23. Nf6+ Kg7 24. Qe2 Kxf6 25. f4 e4 26. g4 Be6 27. Rb5 Qxc3 28. f5 Bd5 29. fxg6+ Kxg6 30. g5 e3+ 31. Kg1 Bc4 32. Rf6+ Kg7 33. Rxf7+ Bxf7 34. g6 hxg6 0-1

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "8"]
[White "Kamps, Manuel"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1620"]
[BlackElo "1768"]
[PlyCount "98"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. c3 d5 4. Bf4 Bf5 5. e3 Qb6 6. b3 h6 7. Bd3 Bxd3 8. Qxd3 c4 9. Qf5 e6 10. Qc2 Nbd7 11. h4 cxb3 12. Qxb3 Qa6 13. Nbd2 Rc8 14. Rc1 Be7 15. a4 0-0 16. Qb5 Qxb5 17. axb5 Nb6 18. 0-0 Na4 19. c4 dxc4 20. Rxc4 Rxc4 21. Nxc4 Rc8 22. Nce5 Nd5 23. Bg3 Nac3 24. Rc1 Rd8 25. Kh2 Nxb5 26. Rc5 Nbc3 27. Rc7 Nxc7 28. Bf4 N7d5 29. Bg3 Ne2 30. e4 Nxg3 31. Kxg3 Nc3 32. Kh2 Nxe4 33. Ne1 Nxf2 34. Kg1 Ne4 35. N5f3 Bf6 36. Nc2 Nd6 37. Kf1 Nf5 38. Ke2 Nxd4+ 39. Nfxd4 Bxd4 40. Kf3 e5 41. Ne1 f5 42. Nc2 Rc8 43. Ke2 Rxc2+ 44. Kd3 Rc3+ 45. Kd2 e4 46. g4 f4 47. Ke2 f3+ 48. Kd1 e3 49. Ke1 Rc1# 0-1

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "5"]
[White "Khachatryan, Taron"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1546"]
[BlackElo "1768"]
[PlyCount "41"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d5 6. e3 g6 7. Be2 Bg7 8. 0-0 dxc4 9. Bxc4 Nxd4 10. exd4 0-0 11. Be3 Bf5 12. Qb3 Qc7 13. h3 Rac8 14. Be2 Be6 15. d5 Bf5 16. Bxa7 Rfd8 17. Bb6 Qd6 18. Bxd8 Rxd8 19. Rfd1 Ne4 20. Bf3 Nc5 21. Qc4 1-0

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "9"]
[White "Matthes, Benjamin"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "B24"]
[WhiteElo "1658"]
[BlackElo "1768"]
[PlyCount "78"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 Nf6 6. f4 e6 7. 0-0 d5 8. e5 Ng8 9. Nb5 Nge7 10. Nd6+ Kf8 11. d4 cxd4 12. Nxd4 Nxd4 13. Qxd4 Nc6 14. Qc5 Kg8 15. Be3 Bf8 16. c4 dxc4 17. Rad1 Bd7 18. Qxc4 Qc7 19. Ne4 Kg7 20. h4 h5 21. Nf6 Rd8 22. Rd2 Bb4 23. Rd3 Ba5 24. Rfd1 Bc8 25. Rxd8 Rxd8 26. Rxd8 Qxd8 27. Kh2 Ne7 28. a3 Nf5 29. Qe4 Qd1 30. b4 Nxe3 31. Qxe3 Bb6 32. Qe4 Bf2 33. Kh3 Qe1 34. Ne8+ Kf8 35. Nd6 Bd7 36. Qc4 Bxg3 37. Qd3 Bxh4 38. Ne4 Be7 39. Qxd7 Qh4# 0-1

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "6"]
[White "Pimenov, Danil"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "1620"]
[BlackElo "1768"]
[PlyCount "90"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. g3 Bg7 8. Bg2 0-0 9. d6 Nc6 10. dxe7 Qxe7 11. Nf3 d5 12. 0-0 d4 13. Na4 Bxe2 14. Qc2 Bxf1 15. Kxf1 Nb4 16. Qxc5 Qxc5 17. Nxc5 Rac8 18. Nb3 d3 19. Bd2 Nc2 20. Rc1 Ne4 21. Ne1 Nxd2+ 22. Nxd2 Ne3+ 23. fxe3 Rxc1 24. Nb3 Rb1 25. Be4 Rd8 26. Kf2 d2 27. Nxd2 Rxd2+ 28. Kf1 Rdd1 29. Bxb1 Rxb1 30. b3 Bc3 31. Ke2 Rxe1+ 32. Kd3 Bb4 33. Kc4 Be7 34. b4 Rxe3 35. b5 Re2 36. a4 Ra2 37. Kb3 Ra3+ 38. Kc4 Rxa4+ 39. Kd5 Rb4 40. Kc6 Kg7 41. b6 Bf6 42. b7 Be5 43. Kd5 Bb8 44. Kc6 f5 45. h3 Bxg3 0-1

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "4"]
[White "Schaefer, Konstantin"]
[Black "Borgert, Alexander"]
[Result "1-0"]
[ECO "B28"]
[WhiteElo "1768"]
[BlackElo "1610"]
[PlyCount "25"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. Nc3 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 e6 7. f3 Ne7 8. Qd2 Nbc6 9. g4 Qb6 10. Nxe6 Qxb2 11. Nxg7+ Kf8 12. Rb1 Qxa2 13. Nxa2 1-0

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "11"]
[White "Schaefer, Konstantin"]
[Black "Karle, Sam"]
[Result "0-1"]
[ECO "C51"]
[WhiteElo "1768"]
[BlackElo "1620"]
[PlyCount "46"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Bc5 6. d4 exd4 7. cxd4 Bb4+ 8. Bd2 Bxd2+ 9. Nbxd2 Nge7 10. Ng5 d5 11. exd5 Nxd5 12. Nxf7 Qe7+ 13. Ne5 Nxe5 14. dxe5 Qxe5+ 15. Kf1 Nc3 16. Qf3 Rf8 17. Qd3 Bf5 18. Qg3 Qxg3 19. hxg3 0-0-0 20. Nf3 Bg6 21. Be6+ Kb8 22. Rc1 Bd3+ 23. Kg1 Ne2+ 0-1

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "3"]
[White "Schaefer, Konstantin"]
[Black "Kleemann, Philipp"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1768"]
[BlackElo "1618"]
[PlyCount "69"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. c3 dxc3 5. Bc4 Nf6 6. Nxc3 Be7 7. 0-0 0-0 8. Qe2 Bg4 9. h3 Bh5 10. g4 Nxg4 11. hxg4 Bxg4 12. Bf4 Nc6 13. Qe3 Bh3 14. Rfd1 Qd7 15. Kh2 Qg4 16. Rg1 Qh5 17. Ng5 Be6+ 18. Nh3 Bxc4 19. Rg2 Be6 20. Rag1 Bf6 21. Nd5 Bd4 22. Qb3 Bxd5 23. exd5 Na5 24. Qd3 Bf6 25. b4 Rae8 26. bxa5 Be5 27. Bxe5 Qxe5+ 28. Kh1 g6 29. Ng5 h5 30. Qh3 Qf5 31. Qxf5 gxf5 32. Ne6+ Kh8 33. Nxf8 Rxf8 34. Rg5 Kh7 35. Rxh5# 1-0

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "1"]
[White "Schaefer, Konstantin"]
[Black "Schuelner, David"]
[Result "0-1"]
[ECO "C51"]
[WhiteElo "1768"]
[BlackElo "1620"]
[PlyCount "72"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Bc5 6. d4 exd4 7. cxd4 Bb4+ 8. Bd2 Bxd2+ 9. Nbxd2 Nf6 10. e5 Ng4 11. 0-0 0-0 12. Ne4 d5 13. exd6 cxd6 14. Bd3 d5 15. Neg5 Nf6 16. Ne5 Nxe5 17. dxe5 Ng4 18. Bxh7+ Kh8 19. f4 g6 20. h3 Ne3 21. Qf3 Nxf1 22. Rxf1 f6 23. exf6 Rxf6 24. g4 Kg7 25. h4 Bd7 26. h5 gxh5 27. gxh5 Qe8 28. Qxd5 Qe3+ 29. Kg2 Qe2+ 30. Kg3 Qg4+ 31. Kh2 Qxh5+ 32. Kg2 Qg4+ 33. Kf2 Qxf4+ 34. Ke2 Qxf1+ 35. Ke3 Qe1+ 36. Kd3 Qd1+ 0-1

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "13"]
[White "Schaefer, Konstantin"]
[Black "Sereda, Yaroslava"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1768"]
[BlackElo "1620"]
[PlyCount "91"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 d5 9. Nxc6 bxc6 10. 0-0-0 Bb7 11. e5 Nd7 12. Bh6 Bxh6 13. Qxh6 Nxe5 14. f4 Ng4 15. Qg5 Ne3 16. Rd3 Nxf1 17. Rxf1 Ba6 18. Rh3 f6 19. Qh6 Rf7 20. Rff3 Qf8 21. Qh4 Bc8 22. g4 Qg7 23. f5 g5 24. Qg3 Ba6 25. Rh5 Qf8 26. h4 h6 27. Qh2 Rh7 28. hxg5 fxg5 29. Rfh3 Bf1 30. Rf3 Bc4 31. Qh1 d4 32. Ne4 Bd5 33. Rfh3 Bxe4 34. Qxe4 Qf7 35. Qxc6 Rd8 36. Rxh6 Rxh6 37. Rxh6 Re8 38. Rg6+ Kh8 39. Qh1+ Qh7 40. Rh6 Qxh6 41. Qxh6+ Kg8 42. Qxg5+ Kf7 43. Qg6+ Kf8 44. Qe6 Rc8 45. Qxc8+ Kf7 46. Qe6+ 1-0

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "10"]
[White "Schaefer, Konstantin"]
[Black "Tham, Nam"]
[Result "0-1"]
[ECO "C51"]
[WhiteElo "1768"]
[BlackElo "1679"]
[PlyCount "52"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Be7 6. d4 d6 7. 0-0 Na5 8. Qa4+ c6 9. dxe5 b5 10. Bxb5 cxb5 11. Qxb5+ Bd7 12. Qd5 Bc6 13. Qd3 dxe5 14. Qe2 Nf6 15. Nxe5 0-0 16. c4 Qc7 17. Bf4 Bd6 18. Nxc6 Nxc6 19. Bxd6 Qxd6 20. Nc3 Rfe8 21. Rad1 Qe5 22. Nb5 a6 23. Na3 Nd4 24. Qd3 Ne6 25. Rfe1 Nc5 26. Qc2 Rad8 0-1

[Event "GER-ch U18 sf Berlin Online"]
[Site "Playchess.com INT"]
[Date "2020.05.01"]
[Round "7"]
[White "Schaefer, Konstantin"]
[Black "Turba, Vincent"]
[Result "0-1"]
[ECO "C57"]
[WhiteElo "1768"]
[BlackElo "1620"]
[PlyCount "30"]
[EventDate "2020.05.01"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Bc5 5. Nxf7 Bxf2+ 6. Kf1 Qe7 7. Nxh8 d5 8. exd5 Nd4 9. d6 Qxd6 10. Be2 Bh4 11. c3 Nxe2 12. Qxe2 Bg4 13. Qb5+ Nd7 14. Nf7 Qf6+ 15. Kg1 Qf2# 0-1

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "10"]
[White "Guder, Sibylle"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1864"]
[BlackElo "1820"]
[PlyCount "91"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. g3 Nf6 4. Bg2 d5 5. cxd5 Nxd5 6. 0-0 e5 7. Nc3 Nc7 8. d3 Be7 9. Nd2 0-0 10. Nc4 f6 11. f4 Be6 12. f5 Bf7 13. Ne4 Qd7 14. Bd2 b6 15. Rc1 Rac8 16. a3 Rfd8 17. Ne3 Nd4 18. g4 Nd5 19. Nxd5 Bxd5 20. Bc3 b5 21. Qe1 h6 22. h4 Kf7 23. Qf2 Nb3 24. Rcd1 b4 25. Be1 bxa3 26. bxa3 Bxe4 27. Bxe4 c4 28. Bb4 Bxb4 29. axb4 Qa4 30. dxc4 Qxb4 31. Bd5+ Kf8 32. g5 Qc5 33. e3 Na5 34. gxh6 gxh6 35. Rc1 a6 36. Kh1 Ke7 37. Qf3 Qb4 38. Qh5 Rf8 39. Qxh6 Nxc4 40. Qg7+ Ke8 41. Qg6+ Ke7 42. Qg7+ Ke8 43. Rfd1 Qc5 44. Rxc4 Qxc4 45. Bxc4 Rxc4 46. Qd7# 1-0

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "12"]
[White "Jeute, Peter"]
[Black "Schaefer, Konstantin"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "1723"]
[BlackElo "1820"]
[PlyCount "104"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. e3 cxd4 4. exd4 d5 5. Bd3 Nc6 6. c3 g6 7. 0-0 Bg7 8. Bg5 0-0 9. Re1 Qc7 10. Nbd2 a6 11. a3 b5 12. h3 Na5 13. Ne5 Nc4 14. Rb1 e6 15. Qf3 Nd7 16. Nxd7 Bxd7 17. Qe2 a5 18. Nf3 Rab8 19. Ne5 Nxe5 20. dxe5 b4 21. axb4 axb4 22. Be7 Rfc8 23. Bxb4 Ba4 24. Ra1 Bb3 25. Bd6 Qb6 26. Bxb8 Rxb8 27. Ra6 Qb7 28. Rea1 Bc4 29. Ra7 Qb6 30. Bxc4 dxc4 31. Qxc4 Qxb2 32. Ra8 Bxe5 33. Rxb8+ Bxb8 34. Ra8 Qb1+ 35. Qf1 Qb7 36. Ra6 Qc7 37. g3 Qxc3 38. Qb5 Be5 39. Ra8+ Kg7 40. Qe8 Bd4 41. Qf8+ Kf6 42. Qd8+ Kg7 43. Qf8+ Kf6 44. Qd8+ Kg7 45. Qh8+ Kh6 46. Qf8+ Kg5 47. Qe7+ f6 48. Ra2 Qe1+ 49. Kg2 Qe4+ 50. Kg1 Qb1+ 51. Kg2 Qxa2 52. Qxh7 Qxf2+ 0-1

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "3"]
[White "Lippmann, Kai"]
[Black "Schaefer, Konstantin"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1742"]
[BlackElo "1820"]
[PlyCount "63"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. e3 Bg7 6. Nge2 0-0 7. 0-0 e6 8. b3 d5 9. cxd5 exd5 10. d4 cxd4 11. exd4 Bf5 12. Bg5 Ne7 13. Nf4 Be6 14. Re1 Qd7 15. Nxe6 fxe6 16. Bh3 Kh8 17. Bxe6 Qc6 18. Rc1 h6 19. Bxf6 Rxf6 20. Bh3 Qd6 21. Nb5 Qb6 22. Rxe7 Qxb5 23. Rcc7 Raf8 24. Rxg7 Re8 25. Rh7+ Kg8 26. Rcg7+ Kf8 27. Bd7 Qe2 28. Qxe2 Rxe2 29. f4 g5 30. f5 h5 31. Be6 h4 32. Rg8# 1-0

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "9"]
[White "Riesner, Daniel"]
[Black "Schaefer, Konstantin"]
[Result "1/2-1/2"]
[ECO "D06"]
[WhiteElo "2161"]
[BlackElo "1820"]
[PlyCount "140"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 cxd4 4. Nxd4 d5 5. cxd5 Nxd5 6. e4 Nf6 7. Nc3 g6 8. Bc4 Bg7 9. 0-0 0-0 10. Re1 Nc6 11. Nxc6 bxc6 12. Be3 Ng4 13. Bc5 Qc7 14. g3 Ne5 15. Be2 Rd8 16. Qc2 Bg4 17. f4 Bxe2 18. Qxe2 Nd3 19. Be3 Nxe1 20. Rxe1 Rab8 21. Qf2 Rb7 22. Rc1 Rdb8 23. b3 Qa5 24. Na4 Rc7 25. Nc5 e6 26. a4 Bf8 27. Rb1 a6 28. Qc2 Rd8 29. b4 Qb6 30. Qf2 Bxc5 31. Bxc5 Qb7 32. Bb6 Rcd7 33. Bxd8 Rxd8 34. Qc5 Rd3 35. Rc1 Ra3 36. Qxc6 Qxc6 37. Rxc6 Rxa4 38. Rb6 Kf8 39. e5 Ke7 40. b5 axb5 41. Rxb5 Ra7 42. Kg2 f6 43. exf6+ Kxf6 44. h4 h5 45. Rc5 Rb7 46. Kh3 Ra7 47. Rc3 Ra4 48. Re3 Rb4 49. Rf3 Kf5 50. Re3 Kf6 51. Rc3 Ra4 52. Rc5 Rb4 53. Rc8 Kf7 54. Kh2 Ra4 55. Kg2 Ra3 56. Rc5 Kf6 57. Rg5 Rb3 58. Kf2 Ra3 59. Rb5 Rc3 60. Ra5 Rb3 61. Rg5 Ra3 62. g4 hxg4 63. Rxg4 Kf5 64. Rg5+ Kxf4 65. Rxg6 e5 66. h5 Rh3 67. h6 e4 68. Rf6+ Kg5 69. Re6 Kf5 70. Rb6 Kg5 1/2-1/2

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "6"]
[White "Schaefer, Konstantin"]
[Black "Arndt, Olaf"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1820"]
[BlackElo "1723"]
[PlyCount "138"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Bc4 Nxd5 4. d4 Nb6 5. Bb3 c5 6. Ne2 cxd4 7. Nxd4 Nc6 8. Be3 e5 9. Qf3 Qf6 10. Qxf6 gxf6 11. Nxc6 bxc6 12. Nc3 Bb4 13. Bd2 Ba6 14. Ne4 Bxd2+ 15. Nxd2 0-0-0 16. 0-0-0 Rhg8 17. g3 Nd5 18. Ne4 f5 19. Nc5 Be2 20. Rde1 Bf3 21. Rhg1 e4 22. c3 Kc7 23. Bd1 Bxd1 24. Rxd1 Nf6 25. Kc2 Ng4 26. Rg2 Rxd1 27. Kxd1 Rd8+ 28. Ke2 Ne5 29. Rg1 Nf3 30. Rh1 Rd2+ 31. Ke3 Rxb2 32. g4 Rxa2 33. gxf5 Ra3 34. Nxe4 Ne5 35. Kd4 Ng4 36. f3 Nh6 37. Rg1 Nxf5+ 38. Ke5 Nh4 39. Rg7 Nxf3+ 40. Kf4 Ne1 41. Rxf7+ Kb6 42. Rxh7 Nd3+ 43. Ke3 Nc5 44. Nxc5 Kxc5 45. Kd2 Ra2+ 46. Kd3 a5 47. h4 Rh2 48. h5 a4 49. h6 a3 50. Ra7 a2 51. h7 Rh3+ 52. Ke4 Rxh7 53. Rxa2 Rh3 54. Ra5+ Kc4 55. Ra6 c5 56. Ra4+ Kb3 57. Ra5 c4 58. Kd4 Rd3+ 59. Kc5 Rxc3 60. Rb5+ Kc2 61. Rb4 Kd3 62. Kd5 Rc1 63. Kc5 c3 64. Rd4+ Ke3 65. Kc4 c2 66. Kc3 Ra1 67. Rd3+ Ke2 68. Rd2+ Ke1 69. Rxc2 Ra3+ 1/2-1/2

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "2"]
[White "Schaefer, Konstantin"]
[Black "Haubold, Sebastian Marcel"]
[Result "1-0"]
[ECO "C52"]
[WhiteElo "1820"]
[BlackElo "1723"]
[PlyCount "57"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 d6 7. Qb3 Qd7 8. 0-0 Bb6 9. dxe5 Na5 10. Qb4 Nxc4 11. Qxc4 dxe5 12. Nxe5 Qe6 13. Qa4+ c6 14. Nc4 Bc7 15. Ba3 Ne7 16. Qb4 a5 17. Qc5 Ng6 18. f4 Nxf4 19. Nbd2 Ng6 20. Nf3 b5 21. Ng5 Qd7 22. Rxf7 Qxf7 23. Nxf7 Kxf7 24. Rf1+ Ke8 25. Qxc6+ Bd7 26. Qxc7 Rc8 27. Nd6+ Ke7 28. Nxc8+ Ke6 29. Qd6# 1-0

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "1"]
[White "Schaefer, Konstantin"]
[Black "Klatt, Ronald"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1820"]
[BlackElo "1712"]
[PlyCount "57"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Ne2 Qxd5 5. Nbc3 Qf5 6. f3 Bh5 7. g4 Bxg4 8. fxg4 Nxg4 9. Nf4 e5 10. Bh3 exf4 11. Bxg4 Qf6 12. Nd5 Qh4+ 13. Kf1 Bd6 14. Qe2+ Kf8 15. Bxf4 Bxf4 16. Nxf4 Nc6 17. c3 Re8 18. Qf3 g6 19. Kg2 h5 20. Bd7 Re7 21. Nxg6+ Kg7 22. Nxh4 Rxd7 23. Rhg1 Kf8 24. Nf5 Ke8 25. Rae1+ Kd8 26. Qe4 Rg8+ 27. Kh1 Rxg1+ 28. Rxg1 b6 29. Rg8# 1-0

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "13"]
[White "Schaefer, Konstantin"]
[Black "Ochmann, Reimund"]
[Result "0-1"]
[ECO "C58"]
[WhiteElo "1820"]
[BlackElo "1868"]
[PlyCount "52"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 9. Nf3 Nf4 10. 0-0 Nxd3 11. cxd3 Bd6 12. Nxe5 0-0 13. d4 c5 14. Nf3 cxd4 15. Nxd4 Bxh2+ 16. Kxh2 Qxd4 17. Nc3 Ba6 18. Re1 Qxf2 19. d3 Rad8 20. Be3 Qh4+ 21. Kg1 Rxd3 22. Qf3 Nc4 23. Qc6 Nxe3 24. Qxa6 Rd2 25. Rxe3 Qf2+ 26. Kh1 Qxg2# 0-1

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "8"]
[White "Schaefer, Konstantin"]
[Black "Sauk, Peter"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "1820"]
[BlackElo "1935"]
[PlyCount "110"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 Qxd5 5. a3 Bxc3+ 6. bxc3 Nf6 7. Nf3 b6 8. Bd3 Bb7 9. 0-0 0-0 10. Bg5 Nbd7 11. Qe2 h6 12. Bf4 Qh5 13. Ne5 Qxe2 14. Bxe2 Nxe5 15. Bxe5 Nd5 16. c4 Nc3 17. Bd3 Rac8 18. a4 f6 19. Bf4 Rfd8 20. Be3 Ne4 21. f3 Ng5 22. a5 Ra8 23. axb6 axb6 24. c3 c5 25. Be2 Nf7 26. Rfb1 Rxa1 27. Rxa1 Nd6 28. Rb1 Nf5 29. Bf2 cxd4 30. cxd4 Nxd4 31. Bxd4 Rxd4 32. Rxb6 Rd2 33. Kf2 Bc8 34. Ke3 Rd8 35. Rb8 Kf7 36. c5 Ke7 37. c6 Kd6 38. Ba6 Kc7 39. Rxc8+ Rxc8 40. Bxc8 Kxc8 41. Kd4 Kc7 42. Kc5 e5 43. g3 g6 44. h4 h5 45. Kd5 Kb6 46. Ke6 Kxc6 47. Kxf6 Kd5 48. Kxg6 Kd4 49. Kxh5 Ke3 50. Kg4 Kd4 51. h5 Kd5 52. h6 e4 53. fxe4+ Kxe4 54. h7 Ke3 55. h8Q Kf2 1-0

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "4"]
[White "Schaefer, Konstantin"]
[Black "Wulff, Joerg"]
[Result "0-1"]
[ECO "B04"]
[WhiteElo "1820"]
[BlackElo "1704"]
[PlyCount "84"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 Nf6 5. Qe2 0-0 6. 0-0 c6 7. e5 Nd5 8. Nc3 Be6 9. Ne4 Qc7 10. Nfg5 Bf5 11. f4 Nd7 12. g4 Bxe4 13. Nxe4 N7b6 14. Bb3 a5 15. a4 dxe5 16. fxe5 e6 17. Bg5 h6 18. Bf6 Bxf6 19. Nxf6+ Kg7 20. h4 Nd7 21. Qf2 Qd8 22. g5 hxg5 23. hxg5 Qe7 24. Kg2 Rh8 25. Rh1 Rxh1 26. Rxh1 Rh8 27. Qf1 Ne3+ 28. Kf2 Nxf1 29. Rxf1 Rh2+ 30. Kg3 Rh8 31. c4 Nb6 32. c5 Nd5 33. Re1 Rh5 34. Kg4 Rh2 35. Bd1 Rg2+ 36. Kh3 Rxg5 37. Kh4 Rg2 38. Bf3 Rf2 39. Kg3 Rxb2 40. Rh1 Nxf6 41. exf6+ Qxf6 42. Be4 Rb3+ 0-1

[Event "GER-ch Net Amateur Gr-B Final"]
[Site "Playchess.com INT"]
[Date "2020.04.18"]
[Round "11"]
[White "Schaefer, Konstantin"]
[Black "Zeuner, Ole"]
[Result "0-1"]
[ECO "C58"]
[WhiteElo "1820"]
[BlackElo "1906"]
[PlyCount "60"]
[EventDate "2020.04.18"]
[EventType "swiss (blitz)"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 h6 9. Ne4 Nd5 10. 0-0 Nf4 11. Be2 Be7 12. Bf3 0-0 13. d4 Ng6 14. Be3 Bf5 15. Ng3 Be6 16. Nc3 Qc7 17. Qe2 Bc4 18. Qd2 Bxf1 19. Rxf1 Rad8 20. d5 Nc4 21. Qe2 Nxe3 22. fxe3 cxd5 23. Nxd5 Qa5 24. Nf5 Bc5 25. a3 Qa4 26. Kh1 e4 27. Bh5 Rxd5 28. b3 Qd7 29. Qc4 Rxf5 30. Re1 Rxh5 0-1

