http://bugs.winehq.org/show_bug.cgi?id=19226
--- Comment #5 from Austin English austinenglish@gmail.com 2010-03-14 18:45:01 --- (In reply to comment #4)
Somewhat related, but when you use both shift keys and attempt to move the piece, you can only move up or right. Left and down are broken. If you release one shift key, all four directions work (or if you use the mouse).
Ignore that, it's a game bug, occurs on windows 7 as well.