[Event "Greifswald Ryck op 24th"]
[Site "Greifswald"]
[Date "2023.07.23"]
[Round "7"]
[White "Klinger, Clemens"]
[Black "Greiner, Jan Oluf"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1585"]
[BlackElo "1122"]
[PlyCount "45"]
[EventDate "2023.07.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. 0-0 Nf6 5. d3 Bc5 6. Nc3 a6 7. h3 d6 8. Be3 Bxe3 9. fxe3 g5 10. Nh2 Be6 11. Bxe6 fxe6 12. Ng4 Nxg4 13. Qxg4 Qe7 14. Qh5+ Kd7 15. Rf7 Raf8 16. Raf1 Qxf7 17. Rxf7+ Rxf7 18. Qxf7+ Ne7 19. d4 exd4 20. exd4 b5 21. d5 exd5 22. Nxd5 Rf8 23. Qxe7+ 1-0

[Event "Greifswald Ryck op 24th"]
[Site "Greifswald"]
[Date "2023.07.22"]
[Round "6"]
[White "Greiner, Jan Oluf"]
[Black "Stepanjan, Emma"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "1122"]
[BlackElo "1194"]
[PlyCount "73"]
[EventDate "2023.07.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 e6 4. Bxc4 Ne7 5. Nf3 g6 6. Nc3 c6 7. 0-0 Bg7 8. Bf4 b6 9. b4 Bb7 10. Re1 0-0 11. Qd2 Nd7 12. Bh6 Qc7 13. e5 Nd5 14. Nxd5 cxd5 15. Bd3 Rfe8 16. Rac1 Qd8 17. Bxg7 Kxg7 18. Qf4 Nf8 19. h4 a5 20. b5 Qe7 21. g4 h6 22. Kg2 Nh7 23. Rh1 Rac8 24. Rcg1 Qa3 25. Bb1 Qb4 26. Rc1 Qxb5 27. Rxc8 Rxc8 28. Rc1 Qb2 29. Rxc8 Bxc8 30. Bd3 Qxa2 31. Bb5 Qb3 32. Be8 f5 33. exf6+ Nxf6 34. Qc7+ Nd7 35. Qxc8 Nf8 36. Qc7+ Kf6 37. Qf7# 1-0

[Event "Greifswald Ryck op 24th"]
[Site "Greifswald"]
[Date "2023.07.22"]
[Round "5"]
[White "Warnig, Marcel"]
[Black "Greiner, Jan Oluf"]
[Result "1-0"]
[ECO "C57"]
[WhiteElo "1527"]
[BlackElo "1122"]
[PlyCount "57"]
[EventDate "2023.07.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+ Ke8 8. Bxd5 Qf6 9. Bxc6+ bxc6 10. Qxf6 gxf6 11. d3 Rg8 12. g3 Bd6 13. Nc3 f5 14. Bd2 Be6 15. 0-0-0 Rb8 16. Rde1 Kd7 17. a3 Rb7 18. f4 exf4 19. Bxf4 Be7 20. Re2 Bf6 21. Be5 Bg5+ 22. Bf4 Bf6 23. Bd2 Rgb8 24. b4 a5 25. Na4 Bd5 26. Nc5+ Kc8 27. Re8+ Bd8 28. Bg5 Bxh1 29. Rxd8# 1-0

[Event "Greifswald Ryck op 24th"]
[Site "Greifswald"]
[Date "2023.07.21"]
[Round "4"]
[White "Greiner, Jan Oluf"]
[Black "Ehrich, Dieter"]
[Result "1/2-1/2"]
[ECO "A43"]
[WhiteElo "1122"]
[BlackElo "1540"]
[PlyCount "81"]
[EventDate "2023.07.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 c5 2. d5 d6 3. c4 g6 4. Nc3 Bg7 5. Bd2 Nf6 6. h3 e6 7. e4 0-0 8. Nf3 Re8 9. Be2 Nbd7 10. a3 a6 11. b4 exd5 12. exd5 Qc7 13. 0-0 b6 14. Re1 Ne5 15. Nxe5 Rxe5 16. Bd3 Nd7 17. Ra2 Qd8 18. Qc1 Rxe1+ 19. Bxe1 Ne5 20. Be2 Bf5 21. g4 Bd3 22. Bxd3 Nxd3 23. Qd2 Ne5 24. Qe2 Nd7 25. Ne4 Nf6 26. Rc2 Nxe4 27. Qxe4 Kf8 28. Bc3 Bxc3 29. Rxc3 Qe7 30. Qxe7+ Kxe7 31. g5 f6 32. Re3+ Kf7 33. h4 f5 34. f4 Rc8 35. Rc3 cxb4 36. axb4 Rc7 37. Kf2 Re7 38. Re3 Rc7 39. Rc3 Re7 40. Re3 Rc7 41. Rc3 1/2-1/2

[Event "Greifswald Ryck op 24th"]
[Site "Greifswald"]
[Date "2023.07.20"]
[Round "2"]
[White "Greiner, Jan Oluf"]
[Black "Weimann, Olaf"]
[Result "1-0"]
[ECO "A60"]
[WhiteElo "1122"]
[BlackElo "1336"]
[PlyCount "51"]
[EventDate "2023.07.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 c5 2. d5 e5 3. dxe6 fxe6 4. c4 Nf6 5. Nc3 d5 6. cxd5 exd5 7. Bg5 d4 8. Bxf6 Qxf6 9. Ne4 Qe5 10. Ng3 Be7 11. Nf3 Qd5 12. e3 0-0 13. b3 Kh8 14. Bc4 Qd6 15. exd4 Bf6 16. 0-0 cxd4 17. Ne4 Qf4 18. Nxf6 Qxf6 19. Re1 Nc6 20. Re2 Bg4 21. Bd5 Rad8 22. h3 Bh5 23. Bxc6 Qxc6 24. Rc1 Qd5 25. Rd2 Rxf3 26. Rxd4 1-0

[Event "Greifswald Ryck op 24th"]
[Site "Greifswald"]
[Date "2023.07.20"]
[Round "3"]
[White "Krambeer, Matti"]
[Black "Greiner, Jan Oluf"]
[Result "1/2-1/2"]
[ECO "C62"]
[WhiteElo "1564"]
[BlackElo "1122"]
[PlyCount "74"]
[EventDate "2023.07.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bg4 5. d5 a6 6. dxc6 axb5 7. cxb7 Rb8 8. Nc3 c6 9. a3 h6 10. 0-0 Nf6 11. Re1 Be7 12. Qd3 Rxb7 13. Bd2 0-0 14. h3 Be6 15. Nh2 Nh7 16. Rad1 Bc4 17. Qf3 Rd7 18. b3 Be6 19. Bc1 Bg5 20. Bxg5 Qxg5 21. Qe3 Qg6 22. Kh1 f5 23. Qe2 fxe4 24. Nxe4 Bd5 25. f3 Nf6 26. Nxf6+ Qxf6 27. Ng4 Qf7 28. Ne3 Be6 29. Rf1 g5 30. g4 h5 31. Ng2 Qg6 32. Ne3 Rff7 33. Kg2 Qh6 34. Rh1 h4 35. Rhf1 Qg6 36. Qd3 Qxd3 37. Rxd3 Rd8 1/2-1/2

[Event "Greifswald Ryck op 24th"]
[Site "Greifswald"]
[Date "2023.07.19"]
[Round "1"]
[White "Quiram, Heiko"]
[Black "Greiner, Jan Oluf"]
[Result "1-0"]
[ECO "C66"]
[WhiteElo "1639"]
[BlackElo "1122"]
[PlyCount "81"]
[EventDate "2023.07.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 Nf6 6. Re1 a6 7. Ba4 Be7 8. d4 b5 9. Bc2 Bg4 10. d5 Bxf3 11. Qxf3 Nb8 12. Be3 h6 13. Nd2 c6 14. a4 cxd5 15. exd5 bxa4 16. Bxa4+ Nbd7 17. Bc6 Rb8 18. Nc4 Qc7 19. Rxa6 0-0 20. Ra7 Qc8 21. b4 Rd8 22. b5 e4 23. Qe2 Kf8 24. b6 Nc5 25. Rea1 Nb3 26. R1a3 Nc5 27. Rc7 Qxc7 28. bxc7 Rb1+ 29. Qf1 Rxf1+ 30. Kxf1 Rc8 31. Ra8 Rxa8 32. Bxa8 g5 33. c8Q+ Kg7 34. Qc7 Ng8 35. Bxc5 dxc5 36. d6 Bf6 37. Bd5 Ne7 38. dxe7 Bxe7 39. Qxe7 Kh8 40. Qxf7 e3 41. Qg8# 1-0

[Event "Itzehoe op"]
[Site "Itzehoe"]
[Date "2022.10.03"]
[Round "5"]
[White "Greiner, Jan Oluf"]
[Black "Farouk, Isa Mohideen"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "90"]
[EventDate "2022.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d3 Bg4 5. Bg5 f6 6. Be3 Nge7 7. 0-0 d5 8. exd5 Nxd5 9. Nc3 Nxc3 10. bxc3 f5 11. Ng5 Bxd1 12. Nf7 Qe7 13. Bg5 Qa3 14. Nxh8 Bh5 15. Rae1 Qxc3 16. d4 Qxc4 17. dxe5 Be2 18. Rd1 Bxf1 19. Rxf1 Be7 20. Bxe7 Nxe7 21. Re1 Qg8 22. e6 Qxh8 23. f4 0-0-0 24. c4 Rd4 25. Rc1 Qg8 26. a4 Qxe6 27. a5 Re4 28. h3 Rxf4 29. Kh2 Rxc4 30. Rxc4 Qxc4 31. g4 fxg4 32. Kg3 Nf5+ 33. Kg2 Qc3 34. hxg4 Qg3+ 35. Kf1 Ne3+ 36. Ke2 c5 37. Kd3 c4+ 38. Kc3 Qe5+ 39. Kb4 c3 40. a6 b6 41. g5 c2 42. g6 c1R 43. Kb3 Qc3+ 44. Ka4 Ra1+ 45. Kb5 Ra5# 0-1

[Event "Itzehoe op"]
[Site "Itzehoe"]
[Date "2022.10.02"]
[Round "3"]
[White "Greiner, Jan Oluf"]
[Black "Dau Schmidt, Piet"]
[Result "0-1"]
[ECO "B10"]
[PlyCount "70"]
[EventDate "2022.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c6 2. Bc4 d5 3. exd5 cxd5 4. Bb3 e6 5. d4 Nf6 6. Nf3 Nc6 7. Ba4 Qa5+ 8. Nc3 Ne4 9. Bd2 Nxc3 10. Bxc3 Qxa4 11. 0-0 Bb4 12. Qd2 Bxc3 13. Qxc3 0-0 14. Rfe1 Bd7 15. Re3 Rac8 16. Ng5 h6 17. Rh3 hxg5 18. Qd3 f5 19. g4 Qxd4 20. Qg3 fxg4 21. Rh5 Rf5 22. Rf1 Be8 23. Qd6 Qe4 24. f3 Qe3+ 25. Rf2 Rxf3 26. Qg3 Rxg3+ 27. hxg3 Bxh5 28. Kg2 Rf8 29. Rxf8+ Kxf8 30. b3 Nd4 31. a4 Ne2 32. Kf1 Nxg3+ 33. Kg2 Qf3+ 34. Kg1 Ne2+ 35. Kh2 Qh3# 0-1

[Event "Itzehoe op"]
[Site "Itzehoe"]
[Date "2022.10.02"]
[Round "4"]
[White "Ignorek, Wolfgang"]
[Black "Greiner, Jan Oluf"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "35"]
[EventDate "2022.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. 0-0 0-0 6. Bg5 d6 7. h3 a6 8. Nc3 b5 9. Bb3 Nd4 10. Nd5 Nxb3 11. axb3 Bb7 12. Nxf6+ gxf6 13. Bh6 Re8 14. Nh4 Bc8 15. Nf5 Kh8 16. Qg4 Rg8 17. Bg7+ Rxg7 18. Qxg7# 1-0

[Event "Itzehoe op"]
[Site "Itzehoe"]
[Date "2022.10.01"]
[Round "2"]
[White "Greiner, Jan Oluf"]
[Black "Kieckbusch, Lotta"]
[Result "0-1"]
[ECO "B30"]
[BlackElo "1271"]
[PlyCount "52"]
[EventDate "2022.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 g6 3. Nf3 Bg7 4. d3 Nc6 5. Ng5 e6 6. Qf3 Nf6 7. b3 Nd4 8. Qd1 Qc7 9. Bb2 0-0 10. Na3 d5 11. Nb5 Nxb5 12. Bxb5 Qa5+ 13. c3 Qxb5 14. e5 Nd7 15. Qf3 h6 16. Nh3 Nxe5 17. Qg3 Nxd3+ 18. Kd2 Nxb2 19. Rab1 d4 20. c4 Qb4+ 21. Ke2 d3+ 22. Kf3 d2 23. Qd6 Qc3+ 24. Kg4 f5+ 25. Kf4 e5+ 26. Qxe5 Bxe5# 0-1

[Event "Itzehoe op"]
[Site "Itzehoe"]
[Date "2022.10.01"]
[Round "1"]
[White "Wartenberg, Julian"]
[Black "Greiner, Jan Oluf"]
[Result "1-0"]
[ECO "C53"]
[WhiteElo "1549"]
[PlyCount "69"]
[EventDate "2022.10.01"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d4 Nf6 6. dxc5 dxc5 7. Qxd8+ Nxd8 8. Bg5 0-0 9. Bxf6 gxf6 10. Nbd2 f5 11. 0-0-0 Nc6 12. Rhe1 b6 13. Bd5 Bb7 14. exf5 Rad8 15. c4 Rfe8 16. Ng5 Re7 17. Nde4 Na5 18. Bxf7+ Rxf7 19. Rxd8+ Kg7 20. Nxf7 Kxf7 21. Rd7+ Ke8 22. Rxc7 Kd8 23. Rxh7 Kc8 24. Nd6+ Kb8 25. Rxe5 a6 26. Re8+ Ka7 27. Ree7 b5 28. Nxb7 Kb6 29. Nxa5 Kxa5 30. cxb5 Kxb5 31. Rb7+ Ka4 32. Kc2 Ka5 33. Rh6 c4 34. Kc3 Ka4 35. Rxa6# 1-0

