[Event "NED-ch28 sf-B"]
[Site "Leeuwarden"]
[Date "1972.??.??"]
[Round "?"]
[White "Zwetsloot, GIJM"]
[Black "Van der Vliet, Fredrik"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "68"]
[EventDate "1972.03.31"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Qxd4 e6 6. Bc4 Nc6 7. Qe4 d6 8. exd6 Qxd6 9. Na3 Nf6 10. Qe2 Be7 11. Nf3 0-0 12. Bg5 a6 13. Rd1 Qc7 14. Bd3 b5 15. h4 Rd8 16. Nc2 Bb7 17. Ncd4 Nxd4 18. Nxd4 b4 19. 0-0 bxc3 20. bxc3 h6 21. Nxe6 Qc6 22. Nf4 hxg5 23. hxg5 Bd6 24. Nd5 Nxd5 25. Qh5 g6 26. Bxg6 Bh2+ 27. Qxh2 Qxg6 28. Rd4 Re8 29. Rh4 Qg7 30. f4 Ne3 31. Rb1 Be4 32. Rb6 Bg6 33. g4 Qxc3 34. Qf2 Rad8 0-1

[Event "corr"]
[Site "corr"]
[Date "1969.??.??"]
[Round "?"]
[White "Zwetsloot, GIJM"]
[Black "Helmond, Frans"]
[Result "0-1"]
[ECO "A04"]
[PlyCount "46"]
[EventDate "1969.??.??"]
[EventType "tourn (corr)"]
[EventRounds "9"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. g3 Nc6 4. Bg2 g6 5. 0-0 Bg7 6. d3 e6 7. Nbd2 Nge7 8. Re1 Bd7 9. Rb1 0-0 10. Nb3 e5 11. h4 Bg4 12. Bg5 f6 13. Be3 f5 14. Qd2 f4 15. gxf4 Bxf3 16. Bxf3 exf4 17. Bxf4 g5 18. hxg5 Ng6 19. Bg3 Rxf3 20. Kg2 Qf8 21. Rh1 Nf4+ 22. Kh2 Be5 23. Qd1 Rxf2+ 0-1

