[Event "Biel op-B 56th"]
[Site "Biel"]
[Date "2023.07.17"]
[Round "1"]
[White "Begdullayeva, Karina"]
[Black "Geiser, Marcellus"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "1034"]
[BlackElo "1623"]
[PlyCount "62"]
[EventDate "2023.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. Nc3 d6 4. d3 Nf6 5. Nge2 e5 6. g3 a6 7. a3 h6 8. Bg2 Be7 9. 0-0 0-0 10. b4 cxb4 11. axb4 Nxb4 12. d4 Bd7 13. Ba3 exd4 14. Bxb4 dxc3 15. Bxc3 Bc6 16. e5 dxe5 17. Bxc6 bxc6 18. Bxe5 Nd7 19. Bc3 Nf6 20. Nd4 c5 21. Nc6 Qc7 22. Nxe7+ Qxe7 23. Re1 Qd7 24. Qc2 Qc6 25. Ra5 Rfe8 26. Rea1 Ne4 27. Bb2 Nd6 28. Ba3 Nb7 29. Ra4 a5 30. Bb2 Nd6 31. Qc3 f6 1/2-1/2

[Event "Biel HTO 53rd"]
[Site "Biel"]
[Date "2020.07.23"]
[Round "4"]
[White "Geiser, Marcellus"]
[Black "Ermitsch, Magnus"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "1628"]
[BlackElo "2000"]
[PlyCount "60"]
[EventDate "2020.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "CBM 197"]
[Source "ChessBase"]
[SourceDate "2020.07.27"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.27"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Be3 Nf6 7. Bd3 e5 8. 0-0 Be7 9. c4 h5 10. f3 d6 11. Qd2 Nh7 12. f4 exf4 13. Bxf4 g5 14. Be3 h4 15. Nc3 g4 16. e5 dxe5 17. Be4 Qxd2 18. Bxd2 Bd7 19. Nb5 Rc8 20. Nc3 Ng5 21. Bf5 Nf3+ 22. gxf3 Bxf5 23. fxg4 Bxg4 24. Rae1 Bh3 25. Rf3 Rg8+ 26. Kf2 Rg2+ 27. Ke3 Bg5+ 28. Ke4 Bxd2 29. Re2 Rxe2+ 30. Nxe2 Bg2 0-1

[Event "Biel HTO 53rd"]
[Site "Biel"]
[Date "2020.07.20"]
[Round "1"]
[White "Emmenecker, Philippe"]
[Black "Geiser, Marcellus"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2100"]
[BlackElo "1628"]
[PlyCount "81"]
[EventDate "2020.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SUI"]
[SourceTitle "CBM 197"]
[Source "ChessBase"]
[SourceDate "2020.07.27"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.27"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. e3 Bb7 4. b3 e6 5. Bb2 d5 6. Bd3 Nbd7 7. 0-0 Be7 8. Nbd2 0-0 9. c4 Ne4 10. Ne1 Ndf6 11. Nxe4 dxe4 12. Bc2 Re8 13. f3 exf3 14. Nxf3 Be4 15. Ne5 Bxc2 16. Qxc2 Rf8 17. e4 c5 18. d5 Ne8 19. Nc6 Qc7 20. Rad1 f6 21. Qe2 Bd6 22. h3 e5 23. a3 a5 24. Bc3 Qd7 25. Rb1 Nc7 26. Rb2 Na6 27. Rfb1 Nb8 28. Nxb8 Rfxb8 29. b4 axb4 30. axb4 Rc8 31. Be1 f5 32. bxc5 Bxc5+ 33. Bf2 Ra4 34. Bxc5 Rxc5 35. Rxb6 Rcxc4 36. Rb8+ Rc8 37. R1b7 Qe8 38. Qb2 Rac4 39. d6 Rc1+ 40. Kh2 Rd1 41. Rxc8 1-0

[Event "Zuerich op-B 39th"]
[Site "Zuerich"]
[Date "2015.12.26"]
[Round "1"]
[White "Jelic, Dejan"]
[Black "Geiser, Marcellus"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2007"]
[BlackElo "1742"]
[PlyCount "107"]
[EventDate "2015.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 g6 7. Bg5 Bg7 8. Qd2 0-0 9. Bh6 Nc6 10. Bxg7 Kxg7 11. Nxc6 bxc6 12. h4 h5 13. Rd1 Qa5 14. f3 Rb8 15. b3 Be6 16. 0-0 c5 17. Nd5 Qxd2 18. Rxd2 Bxd5 19. exd5 Rb6 20. a4 a5 21. Rfd1 Ne8 22. Bc4 f5 23. Re1 Kf7 24. Rde2 Rb7 25. Ba6 Rc7 26. g4 Rg8 27. g5 Ng7 28. f4 Rb8 29. Bc4 Kf8 30. Kf2 Ra7 31. Re3 Rc7 32. Ke2 Rcb7 33. Kd2 Ra7 34. Kc3 Rb4 35. Kd3 Rc7 36. c3 Rb6 37. Bb5 Rbb7 38. Kc2 Ra7 39. Kb2 Rab7 40. Ka3 Rb8 41. b4 cxb4+ 42. cxb4 axb4+ 43. Kxb4 Ra8 44. Rc3 Rac8 45. Rxc7 Rxc7 46. a5 Ne8 47. a6 Rc5 48. Bxe8 Kxe8 49. a7 Rc8 50. Kb5 Kd7 51. Kb6 Rc2 52. a8Q Rb2+ 53. Ka7 Ra2+ 54. Kb8 1-0

[Event "Zuerich op-B 35th"]
[Site "Zuerich"]
[Date "2011.12.28"]
[Round "4"]
[White "Wegelin, Reinhard"]
[Black "Geiser, Marcellus"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1977"]
[BlackElo "1646"]
[PlyCount "41"]
[EventDate "2011.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. d4 Nf6 2. f3 d5 3. e4 dxe4 4. Nc3 e3 5. Bxe3 Nd5 6. Nxd5 Qxd5 7. Bd3 Bf5 8. c4 Qd7 9. Ne2 Bxd3 10. Qxd3 c5 11. 0-0 g6 12. Rad1 Bg7 13. Qa3 cxd4 14. Bxd4 Bxd4+ 15. Rxd4 Qc7 16. Rfd1 0-0 17. Nc3 e6 18. Ne4 f5 19. Ng5 Re8 20. Nxe6 Rxe6 21. Rd8+ 1-0

[Event "Zuerich op-B 33rd"]
[Site "Zuerich"]
[Date "2009.12.29"]
[Round "6"]
[White "Geiser, Marcellus"]
[Black "Arocha, Carlos"]
[Result "0-1"]
[ECO "C03"]
[WhiteElo "1679"]
[BlackElo "1817"]
[PlyCount "74"]
[EventDate "2009.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. Bd3 c5 5. dxc5 Bxc5 6. Qf3 Nf6 7. Nb3 dxe4 8. Bxe4 Nxe4 9. Qxe4 Be7 10. Nf3 0-0 11. 0-0 Bd7 12. Ne5 Nc6 13. Nxd7 Qxd7 14. Be3 Rfd8 15. Bb6 Qd5 16. Qxd5 Rxd5 17. c4 Re5 18. Rfe1 Bd8 19. Be3 Nb4 20. Re2 Bg5 21. Kf1 Bxe3 22. Rxe3 Rxe3 23. fxe3 Nc2 24. Rc1 Nxe3+ 25. Kf2 Ng4+ 26. Kg3 Ne5 27. c5 Nc6 28. Rd1 Rd8 29. Rxd8+ Nxd8 30. Na5 e5 31. Kf3 f5 32. Nxb7 Nxb7 33. c6 Nd6 34. b4 Kf7 35. a4 Ke6 36. c7 Kd7 37. b5 axb5 0-1

[Event "Zuerich op-B 07th"]
[Site "Zuerich"]
[Date "1983.??.??"]
[Round "1"]
[White "Geiser, Marcellus"]
[Black "Pegoraro, Nicola"]
[Result "1-0"]
[ECO "E61"]
[PlyCount "82"]
[EventDate "1983.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "SUI"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Nc3 Bg7 5. Nf3 0-0 6. Bd3 d6 7. 0-0 Nbd7 8. Qc2 a6 9. b3 Rb8 10. a4 b6 11. Bb2 Qc7 12. Rac1 Bb7 13. d5 Ng4 14. h3 Nge5 15. Nxe5 Nxe5 16. Be2 Bc8 17. f4 Nd7 18. Ne4 Nf6 19. Nxf6+ Bxf6 20. Bxf6 exf6 21. e4 Qe7 22. Bd3 Bd7 23. Rce1 b5 24. axb5 axb5 25. Qc3 b4 26. Qb2 Rfe8 27. Qf2 Rf8 28. Qg3 Rfe8 29. Qf2 g5 30. fxg5 fxg5 31. e5 Rf8 32. Bf5 h6 33. Bxd7 Qxd7 34. Qf6 dxe5 35. Rxe5 Rbe8 36. Rxe8 Qxe8 37. Rf3 Kh7 38. d6 Qd8 39. Qf5+ Kg7 40. Qxc5 Qb8 41. Qd4+ f6 1-0

