besnag1 
tricky one
Posted on 3/20/09 1:35 PM

luweewu 
Good one. And quite tricky, as lclaessens mentioned.
Posted on 3/20/09 10:31 AM

lclaessens 
quite tricky. A real solver instead of "painting". Could have more detail
Posted on 3/16/09 12:48 AM