WORLDBASE
12 games / 12 parties
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2025.08.03
Werner-Ott-Open 2025
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| 1213924 | Rodriguez Klasen, Ennio (1950) | Krefenstein, Sergej (2049) | 1-0 | |
| 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 5. O-O b5 6. Bb3 d6 7. c3 Bg4 8. Bd5 Qd7 9. Bxc6 Qxc6 10. Nxe5 Bxd1 11. Nxc6 Be2 12. Re1 Bd3 13. Nb4 Bc4 14. b3 Be6 15. Nd3 Ba7 16. Nf4 Bd7 17. d4 O-O-O 18. Bb2 Nf6 19. Nd2 Rhe8 20. Kf1 Bc6 21. f3 g5 22. Nd3 Bd7 23. g4 Ng8 24. e5 Bc6 25. Nb4 Bb7 26. exd6 Rxe1+ 27. Rxe1 cxd6 28. Ne4 h6 29. Kf2 Kd7 30. Ng3 a5 31. Nc2 Ne7 32. Ne3 Ng6 33. Nef5 Rh8 34. Nh5 Bb6 35. Kg3 Bc7 36. d5 Ne5 37. c4 bxc4 38. bxc4 Ba6 39. c5 Rb8 40. Bxe5 dxe5 41. Nf6+ Kc8 42. Ne7+ Kb7 43. d6 Bd8 44. c6+ 1-0 | ||||
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2025.04.27
BSV BEM Masters 2025
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| 105806 | Krefenstein, Sergej (2014) | Jahnz, F (2242) | 0-1 | |
| 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 5. d3 Ne7 6. O-O Ng6 7. b3 e5 8. Bb2 d6 9. c3 Be7 10. d4 Ba6 11. Re1 Nf4 12. Re3 f6 13. g3 Ne6 14. d5 cxd5 15. Qxd5 Nc7 16. Qd2 d5 17. exd5 Nxd5 18. Re1 Bb7 19. Nh4 Qc8 20. c4 Nf4 21. Nc3 g5 22. gxf4 gxh4 23. Nd5 Qh3 24. Kh1 Rg8 25. Rg1 Qf3+ 0-1 | ||||
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2025.04.26
BSV BEM Masters 2025
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| 105792 | Heerde, Thomas (1983) | Krefenstein, Sergej (2014) | 1/2-1/2 | |
| 1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Bd6 6. Bg2 Nge7 7. O-O O-O 8. Re1 Qc7 9. Qe2 f6 10. c3 d4 11. Nc4 e5 12. a4 Be6 13. Nfd2 b6 14. Rf1 a6 15. Nxd6 Qxd6 16. f4 dxc3 17. bxc3 Rfd8 18. Rb1 Rab8 19. f5 Bf7 20. Qg4 Qxd3 21. Nf3 h5 22. Qh4 Qxb1 23. Ng5 Rd3 24. Nxf7 Kxf7 25. Qxh5+ Kg8 26. g4 Qb3 27. g5 Rbd8 28. gxf6 gxf6 29. Bh6 Qf7 30. Qg4+ Kh7 31. Qh4 Rh8 32. Bf3 Ng6 33. Qh5 Nce7 34. Be2 Rdd8 35. Kh1 Kg8 36. fxg6 Qe6 37. Qh4 Nxg6 38. Rg1 Kf7 39. Rxg6 Kxg6 40. Qh5+ Kh7 41. Bg4 Qxg4 42. Qxg4 Kxh6 43. Qe6 Kg6 44. Kg2 Rd2+ 45. Kg3 Rhxh2 46. Qg8+ Kh6 47. Qh8+ 1/2-1/2 | ||||
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2025.04.25
BSV BEM Masters 2025
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| 105774 | Klenburg, M (2338) | Krefenstein, Sergej (2014) | 1-0 | |
| 1. g3 d5 2. Nf3 Bg4 3. Bg2 Nf6 4. d3 c6 5. h3 Bh5 6. g4 Bg6 7. Ne5 Nbd7 8. Nxg6 hxg6 9. e3 e6 10. Nd2 Qc7 11. Nf3 Bd6 12. Bd2 a5 13. Qe2 e5 14. Ng5 Nh7 15. Nxh7 Rxh7 16. O-O-O O-O-O 17. Kb1 a4 18. Qe1 Re8 19. Ba5 b6 20. Bd2 a3 21. b3 Kb7 22. c4 e4 23. cxd5 cxd5 24. Rc1 Qb8 25. d4 Be7 26. Bb4 Bxb4 27. Qxb4 Re6 28. Rc2 Qd6 29. Qa4 Rh8 30. Rhc1 Nb8 31. Bf1 Ree8 32. Rc7+ Qxc7 33. Rxc7+ Kxc7 34. Qa7+ Kc6 35. b4 Nd7 36. Bb5+ Kxb5 37. Qxd7+ Kxb4 38. Qxd5 Re6 39. Qb3+ Ka5 40. Qxa3+ Kb5 41. Qb3+ Ka5 42. Qc4 b5 43. Qc7+ Rb6 44. Qa7+ Ra6 45. Qc5 Rxh3 46. Qc7+ Ka4 47. Qc2+ Ka5 48. d5 Rf3 49. Qd2+ Kb6 50. d6 Ra8 51. Qd4+ Ka6 52. Qxe4 1-0 | ||||
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2025.04.24
BSV BEM Masters 2025
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| 105762 | Krefenstein, Sergej (2014) | Nogly, C (2203) | 1-0 | |
| 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. Re1 Bd7 7. c3 g6 8. d3 Bg7 9. Nbd2 O-O 10. Nf1 h6 11. b4 Re8 12. Bb3 Be6 13. Bd2 d5 14. Ng3 Kh7 15. Qe2 Qd7 16. Rad1 Rad8 17. Bc1 d4 18. Bxe6 Qxe6 19. cxd4 Nxd4 20. Nxd4 Rxd4 21. a3 Red8 22. Bb2 R4d7 23. Qc2 Ne8 24. Ne2 Qb6 25. Nc3 c6 26. Na4 Qa7 27. Nc5 Rd6 28. Qc4 b6 29. Nb3 Kg8 30. a4 Nc7 31. a5 Ne6 32. g3 b5 33. Qc2 Qd7 34. Re3 h5 35. Nc5 Nxc5 36. Qxc5 f6 37. Rf3 h4 38. d4 exd4 39. Rfd3 hxg3 40. hxg3 f5 41. exf5 Rd5 42. Qb6 Rxf5 43. Qxa6 Qd5 44. Rxd4 Bxd4 45. Rxd4 Qxd4 46. Bxd4 Rxd4 47. Qxc6 Kh7 48. a6 1-0 | ||||
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2025.04.23
BSV BEM Masters 2025
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| 105749 | Krefenstein, Sergej (2014) | Niehaus, F (2126) | 1/2-1/2 | |
| 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 a6 8. Qd2 h5 9. O-O-O b5 10. Nd5 Bb7 11. Nb6 Qxb6 12. Ne6 Qc6 13. Nxg7+ Kf8 14. Bh6 Ng8 15. Ne6+ Ke8 16. Nd4 Qc7 17. Bg5 Nd7 18. Kb1 Rc8 19. Bd3 Nc5 20. h3 Kf8 21. c3 Nxd3 22. Qxd3 Qc5 23. h4 Kg7 24. Nb3 Qc4 25. Qe3 Nf6 26. Na5 Qc7 27. Nxb7 Qxb7 28. Bxf6+ Kxf6 29. Qd4+ Ke6 30. f4 Qc6 31. f5+ gxf5 32. exf5+ Kd7 33. Rhe1 Rhg8 34. Qe5 Rce8 35. f6 e6 36. Qxh5 Ref8 37. Re2 Rg6 38. Qe5 Kc7 39. Qf4 Rfg8 40. Red2 e5 41. Qf5 Rxg2 42. Qh7 Rxd2 43. Rxd2 Rg1+ 44. Kc2 Qc4 45. b3 Qe6 1/2-1/2 | ||||
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2025.04.22
BSV BEM Masters 2025
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| 105734 | Noeldner, Julian (2279) | Krefenstein, Sergej (2014) | 1/2-1/2 | |
| 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 a5 7. Bd3 Bd7 8. Bc2 Nh6 9. O-O cxd4 10. cxd4 Nf5 11. Bxf5 exf5 12. Nc3 Be6 13. Qd3 Be7 14. Rd1 h6 15. h4 Qa6 16. Nb5 O-O 17. Bf4 a4 18. Nd6 Qxd3 19. Rxd3 Na5 20. Rc1 Nc4 21. Rc2 Bxd6 22. exd6 Rfd8 23. Nd2 Rac8 24. Nxc4 Rxc4 25. Rxc4 dxc4 26. Re3 Kf8 27. Kf1 Re8 28. Re5 Bd7 29. Rc5 Re4 30. Rc7 Ke8 31. Rxb7 Bc6 32. Rc7 Rxf4 33. Rxc6 Rxd4 34. g3 Kd7 35. Ra6 f4 36. Ke2 fxg3 37. fxg3 Rd3 38. Rxa4 Rxg3 39. Rxc4 Rg2+ 40. Kf1 Rxb2 41. Rc7+ Ke6 42. Re7+ Kf6 43. Re8 Rd2 44. Rd8 Ke6 45. Re8+ Kf6 46. Rd8 Ke6 47. Re8+ Kf6 1/2-1/2 | ||||
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2025.04.21
BSV BEM Masters 2025
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| 105721 | Kreutz, Jonas (2109) | Krefenstein, Sergej (2014) | 1/2-1/2 | |
| 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 c4 7. Nbd2 f6 8. b4 cxb3 9. Nxb3 fxe5 10. Nxe5 Nf6 11. Bg5 Nxe5 12. Bxf6 Nf7 13. Bh4 Bd7 14. Rb1 Qc7 15. Qc2 Bxa3 16. Bg3 Qc8 17. Bd3 h6 18. O-O O-O 19. Nd2 Bd6 20. Nf3 Be7 21. Bh7+ Kh8 22. Bg6 Bf6 23. Bh4 Nd6 24. Bg3 Nf7 25. Rfe1 b6 26. Bf4 Qd8 27. Qd2 Kg8 28. Re3 Rc8 29. Rbe1 Ng5 30. Ne5 Bxe5 31. Bxe5 Nf7 32. Bxf7+ Rxf7 33. Rg3 Qh4 34. Rh3 Qg5 35. f4 Qf5 36. Ree3 Qb1+ 37. Re1 Qf5 38. Ree3 Qb1+ 39. Kf2 Bb5 40. Re1 Qf5 41. Ree3 Ba4 42. Re2 Bb5 43. Ree3 Ba4 44. Re2 1/2-1/2 | ||||
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2025.04.20
BSV BEM Masters 2025
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| 105706 | Krefenstein, Sergej (2014) | Brustkern, J (2093) | 1-0 | |
| 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 O-O 8. Qd2 Nc6 9. Bc4 Bd7 10. O-O-O Rb8 11. Bb3 Na5 12. g4 b5 13. g5 b4 14. Nce2 Ne8 15. f4 Nxb3+ 16. cxb3 Qa5 17. Kb1 Nc7 18. Rc1 d5 19. e5 Nb5 20. a4 Nxd4 21. Nxd4 Rfd8 22. Rc2 e6 23. Rhc1 Bf8 24. Rc7 Be8 25. Nxe6 d4 26. Nxd8 Rxd8 27. Bxd4 Qd5 28. R7c4 Bd7 29. Qe3 Bf5+ 30. Ka2 Qg2 31. Qf2 Qd5 32. Bc5 Be6 33. Bxf8 1-0 | ||||
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2025.04.19
BSV BEM Masters 2025
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| 105688 | Krefenstein, Sergej (2014) | Matviienko, Mykhailo (2159) | 0-1 | |
| 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 a5 7. Be2 Bd7 8. O-O a4 9. dxc5 Bxc5 10. c4 dxc4 11. Nbd2 Na5 12. Nxc4 Nxc4 13. Bxc4 h6 14. Qe2 Ne7 15. Bd2 Bc6 16. Rfd1 Rd8 17. Rab1 O-O 18. b4 axb3 19. Bxb3 Qc7 20. Bb4 Bxf3 21. Qxf3 Bxb4 22. axb4 Nc6 23. Re1 Nxb4 24. Re4 Nc6 25. Qc3 Ra8 26. Ba4 Ra6 27. Rc4 Qxe5 28. Bxc6 Qxc3 29. Rxc3 Rxc6 30. Rd3 Rfc8 31. Rdd1 R6c7 32. g3 Kf8 33. Kg2 Ke7 34. Rb6 Ra8 35. Rdb1 Ra7 36. h4 Kd8 37. R1b4 h5 38. R6b5 g6 39. Kf3 Kc8 40. Kf4 Ra3 41. f3 Rac3 42. g4 R3c5 43. Rb6 Rd7 44. R6b5 Rd4+ 45. Rxd4 Rxb5 46. Ra4 Kb8 47. Ra3 Rd5 48. Re3 b5 49. Rb3 Kb7 50. Rc3 b4 51. Rb3 Rb5 52. gxh5 gxh5 53. Ke4 Kc6 54. Kd4 Kd6 55. f4 Rf5 56. Ke4 Kc5 0-1 | ||||
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2023.12.28
6th Spandau Christmas
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| 698503 | Krefenstein, Sergej (2029) | Foerster, Jo (2275) | 1/2-1/2 | |
| 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Bb7 5. Nc3 d5 6. cxd5 exd5 7. Bf4 a6 8. e3 Bd6 9. Bg3 Bxg3 10. hxg3 Nbd7 11. Bd3 Qe7 12. Qc2 g6 13. Rc1 c5 14. dxc5 Nxc5 15. O-O O-O 16. b4 Ne6 17. Ne2 Rfc8 18. Qb2 Nd7 19. Ned4 Qf6 20. Rxc8+ Rxc8 21. Rc1 Rxc1+ 22. Qxc1 Nxd4 23. exd4 Qd6 24. Qe3 Nf6 25. Ne5 Kg7 26. Qf4 Qe6 27. Nf3 a5 28. bxa5 bxa5 29. Qc7 Qc6 30. Qxa5 Qc1+ 31. Qe1 Qxa3 1/2-1/2 | ||||
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2023.07.17
Werner-Ott-Open 2023
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| 882436 | Matthes, Aaron (2209) | Krefenstein, Sergej (2057) | 1-0 | |
| 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 Be7 6. O-O b5 7. Bb3 O-O 8. c3 d6 9. h3 Nb8 10. d4 Nbd7 11. Rd1 exd4 12. cxd4 Bb7 13. e5 Nd5 14. Nc3 N7b6 15. Bc2 f5 16. exf6 Nxf6 17. Ng5 Qd7 18. Qd3 Qc6 19. d5 Qc4 20. Qe3 Kh8 21. Qe6 Bxd5 22. Nxd5 Qxc2 23. Rd2 Qg6 24. Nxb6 cxb6 25. Qxe7 Rae8 26. Qxd6 Qxg5 27. Re2 Qc5 28. Qxc5 bxc5 29. Rxe8 Rxe8 30. Be3 c4 31. Rd1 Re6 32. Bg5 Kg8 33. Kf1 Kf7 34. Bxf6 Kxf6 35. Re1 Rxe1+ 36. Kxe1 Ke5 37. a3 Kd4 38. Kd2 a5 39. g4 g5 40. f3 b4 41. axb4 axb4 42. Ke2 c3 43. b3 Ke5 44. Ke3 h6 45. Kd3 Kf4 46. Ke2 c2 47. Kd2 Kxf3 48. Kxc2 Ke2 49. Kc1 Kd3 50. Kb2 Kd2 51. Kb1 Kc3 52. Ka2 Kc2 1-0 | ||||