Great puzzler!
It requires using the stylus which works really well, the boxes you have to touch are a decent size so you never find yourself tapping the wrong one.
If you connect to nintendo wi-fi there you will find access to additional puzzle packs to donwload which adds more play time to this already great game.
I found once i started playing it was hard to stop and reccommend it to anyone who enjoys sudoku or logic problems in general.