[Event "Wch U20"]
[Site "Adelaide AUS"]
[Date "1988.09.??"]
[EventDate "1988.09.00"]
[Round "4"]
[Result "0-1"]
[White "Jeroen Piket"]
[Black "Matthias Wahls"]
[ECO "A61"]
[WhiteElo "2495"]
[BlackElo "2460"]
[PlyCount "42"]

1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6
7. Bg5 Bg7 8. Nd2 h6 9. Bh4 g5 10. Bg3 Nh5 11. Nc4 Nxg3
12. hxg3 O-O 13. e3 Qe7 14. Qc2 f5 15. Nb5 Rf6 16. Nbxd6 Bd7
17. Qb3 Rxd6 18. Nxd6 Qxd6 19. Qxb7 Qb6 20. Ba6 Qa5+ 21. Kd1
Ba4+ 0-1