bug in chess game #964 ?

Hi, I use to review some games here,
I think there is something buggy in chess game #964:
http://www.littlegolem.net/jsp/game/game.jsp?gid=964&nmove=42

look to moves 21. Re2 c5 22. dxc6 dxc6

BTW, is it possible to insert a hyperlink in forums' messages ? ;-)
with regards.

This game is all right. Move 21. .. c5 22. dxc6 is en-passant move. It is standard chess rule. Look for example on page: http://www.chessvariants.com/d.chess/chess.html

bump