pretty fun game. Unfortunately there are still several levels which have hints with numbers bigger than the field as others have mentioned. Since the number of skips you get is lower than the number of invalid levels, you can't finish the game...
Great game, I've played it multiple times through already. The only issue I have with it is that I'd like to be able to mute at any point during the game instead of having to finish the first few levels before I can. Hope you'll make another one :)
 "Griddler Groove"){kind=icon}
 "NoNoSparks: Genesis"){kind=icon}