[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.26"]
[Round "9"]
[White "Hoffer, Hayo"]
[Black "Holtermann, Klaas"]
[Result "1/2-1/2"]
[ECO "D91"]
[WhiteElo "1847"]
[BlackElo "1714"]
[PlyCount "33"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 g6 4. Nc3 Bg7 5. Bg5 c6 6. e3 Nbd7 7. Be2 0-0 8. 0-0 dxc4 9. Bxc4 h6 10. Bh4 g5 11. Bg3 Nh5 12. Be5 Nxe5 13. Nxe5 Bxe5 14. Qxh5 Bg7 15. f4 e6 16. Rad1 f5 17. Kh1 1/2-1/2

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.25"]
[Round "8"]
[White "Holtermann, Klaas"]
[Black "Zijlstra, Berend"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1714"]
[BlackElo "1300"]
[PlyCount "71"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. 0-0 Nf6 5. d3 d6 6. c3 h6 7. Bb3 0-0 8. Re1 Bg4 9. Nbd2 Rb8 10. h3 Bh5 11. Nf1 Bg6 12. Ng3 Nd7 13. Nh2 Nc5 14. Bc2 Ne6 15. Nhf1 Bf6 16. Ne3 Bh4 17. Nef5 Bxg3 18. Nxg3 Ne7 19. d4 exd4 20. cxd4 c6 21. f4 Bh7 22. f5 Nc7 23. Qg4 Ne8 24. Bxh6 Kh8 25. Bg5 f6 26. Bf4 Ng8 27. Bb3 b5 28. Nh5 Rb7 29. Re3 Nh6 30. Qh4 Bg8 31. Bxh6 Bxb3 32. Bxg7+ Nxg7 33. Nxf6+ Nh5 34. Qxh5+ Kg7 35. Qg6+ Kh8 36. Qh6+ 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.24"]
[Round "7"]
[White "Bensmann, Jannis"]
[Black "Holtermann, Klaas"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1566"]
[BlackElo "1714"]
[PlyCount "65"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 e6 2. Nc3 d5 3. Bf4 Nf6 4. f3 Be7 5. Qd2 Nbd7 6. Nb5 e5 7. dxe5 Nh5 8. e6 Nxf4 9. exf7+ Kf8 10. Qxf4 c6 11. Nc7 Nb6 12. Nxa8 Nxa8 13. e4 Bg5 14. Qb8 Nb6 15. Qxa7 Nc4 16. Bxc4 dxc4 17. Qc5+ Kxf7 18. Qxc4+ Be6 19. Qc3 Qb6 20. Nh3 Bxh3 21. gxh3 Bh4+ 22. Kd1 Rd8+ 23. Kc1 Bg5+ 24. Kb1 Qf2 25. a3 Rd2 26. Ka2 Rxc2 27. Qb3+ Kf8 28. Raf1 Qe2 29. Re1 Qf2 30. Rhf1 Qxh2 31. f4 Be7 32. Qxb7 Bxa3 33. Qa8+ 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.23"]
[Round "6"]
[White "Holtermann, Klaas"]
[Black "Laubrock, Sophia"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1714"]
[BlackElo "1550"]
[PlyCount "93"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 Bf5 6. Qe2 Nbd7 7. Nf3 e6 8. Bd2 c6 9. Nd4 Be7 10. Nd5 Qd8 11. Nxe7 Qxe7 12. Nxf5 exf5 13. Qxe7+ Kxe7 14. 0-0-0 Rhe8 15. h3 Kf8 16. Rhe1 Nd5 17. Bb3 Kg8 18. c4 Nc7 19. d4 Re4 20. Rxe4 fxe4 21. Bc2 f5 22. g4 g6 23. gxf5 gxf5 24. Rg1+ Kf7 25. Rg5 Kf6 26. Rh5 Kg6 27. Rh6+ Kg7 28. Rh5 Kg6 29. Rh6+ Kg7 30. Rd6 Nf6 31. Bg5 Nce8 32. Re6 Kf7 33. Re5 Kg6 34. Bxf6 Kxf6 35. Ra5 a6 36. Ra3 Rd8 37. Rb3 Rd7 38. d5 cxd5 39. cxd5 Rxd5 40. Rxb7 h5 41. Rb6+ Rd6 42. Rb8 Nc7 43. Rh8 Kg5 44. Bd1 Rh6 45. h4+ Kg6 46. Rg8+ Kf6 47. Rg5 1/2-1/2

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.22"]
[Round "5"]
[White "Gebur, Thomas"]
[Black "Holtermann, Klaas"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1859"]
[BlackElo "1714"]
[PlyCount "41"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nf3 Bg4 6. h3 Bh5 7. 0-0 Ne7 8. Re1 0-0 9. Nbd2 c6 10. Nf1 Bg6 11. Ne5 Bxd3 12. Qxd3 Nd7 13. Bf4 f6 14. Nxc6 bxc6 15. Bxd6 Rf7 16. Re2 Nb6 17. Bg3 Qd7 18. Rae1 Nf5 19. b3 Rd8 20. Re6 Nc8 21. Qxf5 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.21"]
[Round "4"]
[White "Holtermann, Klaas"]
[Black "Sausmikat, Armin"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "1714"]
[BlackElo "1879"]
[PlyCount "68"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d4 Bxd4 6. Nxd4 Nxd4 7. f4 d6 8. fxe5 dxe5 9. Bg5 Qe7 10. Nc3 c6 11. Ne2 Bg4 12. c3 Nxe2+ 13. Bxe2 Bxe2 14. Qxe2 0-0-0 15. Kh1 Kb8 16. Rf2 Rd6 17. Raf1 Rhd8 18. h3 h6 19. Bxf6 gxf6 20. Qe3 b6 21. Rf5 Rh8 22. Qf3 Rg8 23. Rxf6 Rd2 24. Rxf7 Qg5 25. Rf8+ Rd8 26. Rf5 Qg7 27. Rf2 Rd7 28. Qh5 Rgd8 29. Rxe5 Qg3 30. Ref5 Rd1+ 31. Rf1 R1d2 32. Qf3 Qxf3 33. R1xf3 Rxb2 34. Rf2 Rxf2 1/2-1/2

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.20"]
[Round "2"]
[White "Holtermann, Klaas"]
[Black "Peine, Olaf"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "1714"]
[BlackElo "1504"]
[PlyCount "63"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. 0-0 Nf6 5. d3 d6 6. c3 0-0 7. Bb3 Bd7 8. Re1 b6 9. d4 exd4 10. cxd4 Na5 11. Bc2 Bc8 12. h3 Ba6 13. Nc3 Rc8 14. b4 Nc4 15. b5 Bb7 16. Qd3 Na5 17. Bg5 g6 18. d5 Nd7 19. Be3 Ne5 20. Nxe5 dxe5 21. f4 exf4 22. Bxf4 Bc5+ 23. Kh1 Qf6 24. Bh6 Rfe8 25. Rf1 Qd4 26. Qf3 Re7 27. Ne2 Qe5 28. Bf4 Qg7 29. Bg5 Rd7 30. Qf6 Qxf6 31. Bxf6 Nc4 32. Bg5 1/2-1/2

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.20"]
[Round "3"]
[White "Rast, Matthias"]
[Black "Holtermann, Klaas"]
[Result "0-1"]
[ECO "D72"]
[WhiteElo "1213"]
[BlackElo "1714"]
[PlyCount "24"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 d5 4. cxd5 Nxd5 5. e4 Nb6 6. d4 Bg7 7. Nf3 c5 8. Be3 Nc6 9. e5 cxd4 10. Bxd4 Nxd4 11. Qxd4 Qxd4 12. Nxd4 Bxe5 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2016.03.19"]
[Round "1"]
[White "Balazs, Balint"]
[Black "Holtermann, Klaas"]
[Result "1-0"]
[ECO "C04"]
[WhiteElo "2101"]
[BlackElo "1714"]
[PlyCount "35"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3 Nf6 5. e5 Nd7 6. f4 Be7 7. Bd3 0-0 8. Ndf3 f6 9. Nh3 Qe8 10. Be3 Nd8 11. Qc2 Qh5 12. 0-0-0 c5 13. exf6 Nxf6 14. dxc5 Nc6 15. Nhg5 g6 16. h3 Qh6 17. g4 Nd7 18. Nxe6 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.04.04"]
[Round "9"]
[White "Rademacher, Uwe"]
[Black "Holtermann, Klaas"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1773"]
[BlackElo "1507"]
[PlyCount "48"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nf6 5. Nc3 Be7 6. Nf3 Bg4 7. Be2 dxc4 8. Qa4+ c6 9. Qxc4 0-0 10. 0-0 Nbd7 11. Be3 Nb6 12. Qb3 Qc7 13. Ne5 Bxe2 14. Nxe2 Nbd5 15. Bg5 Bd6 16. Nf3 Rfe8 17. Ng3 h6 18. Bd2 Bxg3 19. fxg3 Re7 20. Qd3 Rae8 21. Ne5 Re6 22. Rac1 Qb6 23. Bc3 Rxe5 24. Kh1 Re2 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.04.03"]
[Round "8"]
[White "Friesen, Walter"]
[Black "Holtermann, Klaas"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1764"]
[BlackElo "1507"]
[PlyCount "47"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 0-0 5. c4 c5 6. Bg2 Nc6 7. 0-0 Re8 8. d4 d5 9. dxc5 dxc4 10. Qc2 cxb3 11. axb3 Bf5 12. Qc3 Qc7 13. Nbd2 e5 14. e3 Nd5 15. Qc4 Ndb4 16. e4 Be6 17. Qe2 b6 18. Rfc1 Rad8 19. Bc3 Nd3 20. Rc2 Nxc5 21. Nc4 Nxb3 22. Ra3 Bxc4 23. Qxc4 Nc5 24. Bb2 1/2-1/2

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.04.02"]
[Round "7"]
[White "Holtermann, Klaas"]
[Black "Brueggemann, Werner"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1507"]
[BlackElo "1219"]
[PlyCount "25"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. 0-0 d6 5. c3 Nh6 6. h3 f6 7. d4 g5 8. Nxg5 Kf8 9. Ne6+ Bxe6 10. Bxh6+ Ke8 11. Bxe6 Bf8 12. Qh5+ Ke7 13. Qf7# 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.04.01"]
[Round "6"]
[White "Ficken, Hartmut"]
[Black "Holtermann, Klaas"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1698"]
[BlackElo "1507"]
[PlyCount "65"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Bd6 5. cxd5 Ne7 6. Nc3 0-0 7. Be2 Bf5 8. Nf3 Nd7 9. Nh4 Nb6 10. Nxf5 Nxf5 11. g3 Re8 12. 0-0 Bb4 13. Bg4 Ne7 14. Bg5 Nbxd5 15. Qb3 Qd6 16. Bf3 Bxc3 17. bxc3 Rab8 18. Rad1 h6 19. Bc1 Qd7 20. Ba3 c6 21. Qc2 Nf6 22. Bc1 Qh3 23. Bf4 Rbd8 24. Rb1 Ned5 25. Be5 b6 26. c4 Ne7 27. Bxf6 gxf6 28. Rbd1 Ng6 29. Bxc6 Kf8 30. Bxe8 Rxe8 31. Rfe1 Nf4 32. Rxe8+ Kg7 33. f3 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.03.31"]
[Round "5"]
[White "Holtermann, Klaas"]
[Black "Hoose, Hannelore"]
[Result "1/2-1/2"]
[ECO "C18"]
[WhiteElo "1507"]
[BlackElo "1709"]
[PlyCount "93"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 cxd4 6. axb4 dxc3 7. bxc3 Qc7 8. Qd4 Ne7 9. Bb5+ Kf8 10. f4 Nbc6 11. Qd3 a6 12. Ne2 Rb8 13. Bxc6 Nxc6 14. Ba3 Kg8 15. b5 axb5 16. Bd6 Qb6 17. Bxb8 Nxb8 18. Ra8 Qc7 19. Qxb5 g6 20. Qa5 Qxa5 21. Rxa5 Kg7 22. Ra8 Na6 23. Nd4 Nc5 24. Nb5 Bd7 25. Rxh8 Kxh8 26. Nd6 Kg7 27. Kd2 Ne4+ 28. Nxe4 dxe4 29. Ke3 Bc6 30. Rd1 h6 31. Rd6 h5 32. h3 Kf8 33. g4 hxg4 34. hxg4 Ke7 35. c4 Ke8 36. Rxc6 bxc6 37. Kxe4 c5 38. f5 gxf5+ 39. gxf5 Kf8 40. f6 Kg8 41. Kf4 Kh7 42. Kg5 Kg8 43. Kf4 Kf8 44. Ke3 Ke8 45. Kd3 Kd7 46. Kc3 Kc6 47. Kb3 1/2-1/2

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.03.30"]
[Round "4"]
[White "Kueck, Alexander"]
[Black "Holtermann, Klaas"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1133"]
[BlackElo "1507"]
[PlyCount "34"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Be2 Qg6 8. Bf3 Ne5 9. Qe2 0-0 10. Nd2 Nxf3+ 11. Qxf3 c6 12. Nf5 Bd6 13. Nh4 Qe6 14. 0-0 Bc7 15. Bd4 Qh6 16. Qg4 d5 17. Nf5 Qxh2# 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.03.29"]
[Round "3"]
[White "Holtermann, Klaas"]
[Black "Ernst, Herwarth"]
[Result "0-1"]
[ECO "B71"]
[WhiteElo "1507"]
[BlackElo "1950"]
[PlyCount "52"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nc6 7. Nxc6 bxc6 8. e5 dxe5 9. Qxd8+ Kxd8 10. fxe5 Nd7 11. Bf4 Bg7 12. 0-0-0 Ke8 13. Re1 Nb6 14. Ne4 Nd5 15. Bg3 Rb8 16. Bc4 Bh6+ 17. Kb1 Be6 18. Bb3 Nc7 19. Nc5 Bxb3 20. e6 Bxc2+ 21. Kxc2 Rb5 22. exf7+ Kxf7 23. Rhf1+ Ke8 24. Bd6 Nd5 25. Kb1 Bg7 26. b3 Bc3 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.03.29"]
[Round "2"]
[White "Holtermann, Klaas"]
[Black "Wessels, Stefan"]
[Result "0-1"]
[ECO "B93"]
[WhiteElo "1507"]
[BlackElo "1938"]
[PlyCount "42"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 g6 7. a4 Bg7 8. Bc4 Nbd7 9. Be3 Nc5 10. e5 Ng4 11. Qd2 dxe5 12. Nf3 Qxd2+ 13. Bxd2 exf4 14. Nd5 Ne6 15. Bxf4 Nxf4 16. Nc7+ Kf8 17. Nxa8 Bxb2 18. Rd1 Bc3+ 19. Nd2 Ne3 20. Kf2 Nxd1+ 21. Rxd1 Bg4 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2015.03.28"]
[Round "1"]
[White "Boehning, Kilian"]
[Black "Holtermann, Klaas"]
[Result "1/2-1/2"]
[ECO "C34"]
[WhiteElo "1914"]
[BlackElo "1507"]
[PlyCount "50"]
[EventDate "2015.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 Nc6 4. Nf3 d6 5. d4 g5 6. h4 f6 7. 0-0 Bg4 8. Nc3 Qd7 9. d5 Ne5 10. Bb5 c6 11. dxc6 bxc6 12. Nxe5 fxe5 13. Bxc6 Bxd1 14. Bxd7+ Kxd7 15. Rxd1 gxh4 16. Nd5 Be7 17. c4 Rc8 18. b3 Nf6 19. Nxf6+ Bxf6 20. Ba3 Be7 21. c5 Rc6 22. Rd5 Ke6 23. b4 dxc5 24. bxc5 Rhc8 25. Rc1 Rg8 1/2-1/2

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2012.04.07"]
[Round "9"]
[White "Holtermann, Klaas"]
[Black "Kohlscheen, Jens"]
[Result "1/2-1/2"]
[ECO "B03"]
[PlyCount "44"]
[EventDate "2012.03.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 exd6 6. Bd3 Nc6 7. Be3 Be7 8. h3 Bf6 9. Nf3 0-0 10. a3 Re8 11. 0-0 Bd7 12. Qc2 g6 13. Nc3 Nc8 14. Ne4 Bg7 15. Bg5 f6 16. Be3 N8e7 17. d5 Nb8 18. Nd4 Nf5 19. Nxf5 Bxf5 20. Rae1 c6 21. g4 Bxe4 22. Bxe4 c5 1/2-1/2

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2012.04.06"]
[Round "8"]
[White "Torkler, Wolfgang"]
[Black "Holtermann, Klaas"]
[Result "0-1"]
[ECO "C63"]
[PlyCount "43"]
[EventDate "2012.03.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. d3 fxe4 4. dxe4 Nc6 5. Bb5 d6 6. Bc4 h6 7. 0-0 Nf6 8. Nc3 Bg4 9. h3 Bh5 10. Be3 Qd7 11. a4 Bf7 12. Bxf7+ Qxf7 13. a5 a6 14. Qe2 Be7 15. Rfb1 0-0 16. b4 d5 17. Bc5 Bxc5 18. bxc5 Nd4 19. Nxd4 exd4 20. Nxd5 Nxd5 21. exd5 Qxd5 22. Rxb7 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2012.04.04"]
[Round "6"]
[White "Holtermann, Klaas"]
[Black "Ficken, Hartmut"]
[Result "0-1"]
[ECO "B90"]
[BlackElo "1753"]
[PlyCount "90"]
[EventDate "2012.03.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 h6 7. Bc4 e6 8. 0-0 Be7 9. Be3 Qc7 10. Bb3 Nbd7 11. f4 Nc5 12. Qf3 Nxb3 13. Nxb3 Bd7 14. a5 Qc4 15. Rfd1 e5 16. f5 Bc6 17. Nd2 Qb4 18. Ra2 Rd8 19. Bb6 Rd7 20. Re1 0-0 21. Qg3 d5 22. exd5 Bc5+ 23. Bxc5 Qxc5+ 24. Kh1 Bxd5 25. Rxe5 Qc6 26. Nxd5 Rxd5 27. Re2 Qxc2 28. Qe1 Rfd8 29. Nf3 Qxf5 30. Ra1 Qf4 31. Re7 R8d7 32. Rxd7 Rxd7 33. Rd1 Qe4 34. Qf1 Rxd1 35. Qxd1 Qb4 36. Qd2 Qxd2 37. Nxd2 Kf8 38. Kg1 Ke7 39. Nc4 Ke6 40. Kf1 Kd5 41. b3 Ne8 42. Ke2 Nd6 43. Kd3 Nxc4 44. bxc4+ Kc5 45. Kc3 f5 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2012.04.02"]
[Round "4"]
[White "Holtermann, Klaas"]
[Black "Bergmann, Reinhold"]
[Result "0-1"]
[ECO "B33"]
[BlackElo "1897"]
[PlyCount "64"]
[EventDate "2012.03.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf3 Bb4 7. Bg5 h6 8. Bxf6 Bxc3+ 9. bxc3 Qxf6 10. Bc4 0-0 11. 0-0 Rd8 12. Nd2 d6 13. Qf3 Qe7 14. Qg3 Be6 15. Bxe6 Qxe6 16. f4 exf4 17. Rxf4 Ne5 18. Raf1 Kh8 19. Nb3 Rd7 20. Nd4 Qxa2 21. Nf5 Rg8 22. Rh4 Qe6 23. Qe3 Kh7 24. Nd4 Qg6 25. Rf5 Rdd8 26. Rg5 Qf6 27. Qh3 Qxg5 28. Rh5 Qc1+ 29. Kf2 Qd2+ 30. Kf1 Qf4+ 31. Kg1 Qg4 32. Nf3 Nxf3+ 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2012.04.01"]
[Round "2"]
[White "Holtermann, Klaas"]
[Black "Mueller, Thomas3333"]
[Result "0-1"]
[ECO "C89"]
[PlyCount "62"]
[EventDate "2012.03.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Qf3 Bg4 16. Qg2 Qh5 17. Be3 Bf3 18. Qf1 f5 19. Nd2 f4 20. Nxf3 fxe3 21. Rxe3 Rxf3 22. Rae1 Raf8 23. Qe2 Qf7 24. Rf1 Kh8 25. Re6 Qd7 26. Re1 Rxf2 27. Qxf2 Rxf2 28. Kxf2 g6 29. Bxd5 cxd5 30. Rf6 Kg7 31. Ree6 Be7 0-1

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2012.04.01"]
[Round "3"]
[White "Ungar, Benedict"]
[Black "Holtermann, Klaas"]
[Result "1-0"]
[ECO "A15"]
[WhiteElo "1772"]
[PlyCount "65"]
[EventDate "2012.03.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. b4 Bg7 4. Bb2 0-0 5. g3 d5 6. Bg2 Nbd7 7. d3 c5 8. a3 Qb6 9. 0-0 cxb4 10. axb4 Qxb4 11. Ba3 Qa5 12. Nbd2 Qd8 13. Rb1 Re8 14. c5 e5 15. Qc2 Qc7 16. Rfc1 Bf8 17. Rb3 Nb8 18. e3 Nc6 19. Qc3 Bg7 20. e4 Be6 21. Qb2 Rab8 22. Ng5 dxe4 23. Nxe6 Rxe6 24. Rb1 exd3 25. Rxb7 Rxb7 26. Qxb7 Qxb7 27. Rxb7 e4 28. Bb2 Bh6 29. Bc3 Nd5 30. Nxe4 f5 31. Ng5 Re1+ 32. Bxe1 Bxg5 33. Bxd5+ 1-0

[Event "Bremen-ch op"]
[Site "Bremen"]
[Date "2012.03.31"]
[Round "1"]
[White "Klemm, Robert"]
[Black "Holtermann, Klaas"]
[Result "0-1"]
[ECO "D78"]
[PlyCount "44"]
[EventDate "2012.03.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d5 6. c4 c6 7. Nc3 Nbd7 8. Nd2 e6 9. f3 c5 10. e3 cxd4 11. exd4 Nb6 12. c5 Nbd7 13. f4 Nb8 14. b4 Nc6 15. Nf3 Nxb4 16. Ne5 Nc6 17. Be3 Bh6 18. Qd2 Nxe5 19. dxe5 Ng4 20. Bd4 Qc7 21. h3 Nxe5 22. Bxe5 Qxe5 0-1

