[Event "Maarssen OKU op-C"]
[Site "Maarssen"]
[Date "2013.06.01"]
[Round "4"]
[White "Kepers, Luc"]
[Black "Vayzberg, Roman"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "1451"]
[PlyCount "31"]
[EventDate "2013.05.31"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nc3 Nf6 4. e4 e6 5. Bxc4 Nc6 6. Nf3 Bd7 7. Bf4 Bb4 8. Qd3 0-0 9. Rc1 h6 10. 0-0 a6 11. a3 Be7 12. Bb3 Na5 13. Bc2 Re8 14. e5 Nd5 15. Qh7+ Kf8 16. Qh8# 1-0

[Event "Maarssen OKU op-C"]
[Site "Maarssen"]
[Date "2013.06.01"]
[Round "3"]
[White "Mulder, Gerard"]
[Black "Vayzberg, Roman"]
[Result "1-0"]
[ECO "C62"]
[WhiteElo "1525"]
[PlyCount "103"]
[EventDate "2013.05.31"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nc6 5. Bb5 Bd7 6. Nc3 Nxd4 7. Bxd7+ Qxd7 8. Qxd4 a6 9. 0-0 Nf6 10. f3 Be7 11. Be3 0-0 12. Rad1 c5 13. Qd2 b5 14. e5 Ne8 15. Bxc5 Qe6 16. exd6 Nxd6 17. Rfe1 Qf6 18. Bxd6 Bxd6 19. Qxd6 Qh4 20. Re4 Qg5 21. Rg4 Qe3+ 22. Kh1 g6 23. Re4 Qf2 24. Re2 Qh4 25. g3 Qh3 26. Ne4 Rad8 27. Qxd8 Rxd8 28. Rxd8+ Kg7 29. Kg1 Qe6 30. b3 Qb6+ 31. Kg2 Qxd8 32. Rd2 Qa5 33. c3 Qc7 34. Rc2 f5 35. Nf2 Qd6 36. c4 Qc6 37. c5 h5 38. Nd3 g5 39. Nb4 Qe6 40. c6 g4 41. c7 gxf3+ 42. Kf2 f4 43. c8Q Qe3+ 44. Kf1 fxg3 45. Qd7+ Kg6 46. Rc6+ Kg5 47. Qg7+ Kf4 48. Nd5+ Ke4 49. Nxe3 Kxe3 50. Qe5+ Kd2 51. Rd6+ Kc2 52. hxg3 1-0

[Event "Maarssen OKU op-C"]
[Site "Maarssen"]
[Date "2013.06.01"]
[Round "2"]
[White "Vayzberg, Roman"]
[Black "Smits, Johan"]
[Result "1-0"]
[ECO "B30"]
[BlackElo "1474"]
[PlyCount "61"]
[EventDate "2013.05.31"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. d3 Nc6 3. Nf3 e5 4. Be2 d6 5. 0-0 Be7 6. Nc3 Nf6 7. h3 0-0 8. a3 Be6 9. Na2 Rc8 10. c4 Nd4 11. Nc3 h6 12. Nxd4 exd4 13. Nd5 Nxd5 14. exd5 Bd7 15. Bd2 Bg5 16. f4 Bf6 17. Bg4 Re8 18. b4 Ra8 19. Qf3 b5 20. Rae1 Qc8 21. Rxe8+ Qxe8 22. Re1 Qd8 23. f5 Bg5 24. Re2 Qf6 25. Bf4 Bxf5 26. Bxg5 Qxg5 27. Qxf5 Qc1+ 28. Kh2 Qxa3 29. Qd7 Kf8 30. Qxd6+ Kg8 31. Qe7 1-0

