Book of Enigmas: Shadows description

Some time ago an old professor travelled around the world searching for the most amazing shadows. He painted all of them in an old book: the Book of Shadows.

But he lost this book too, just like what happened to the Book of Enigmas.

SOLVE AMAZING PUZZLES
Help the old professor solve all the pages!

TRAIN YOUR BRAIN
Think of all the possible combinations about the images on the page to figure out the answer!

ENJOY SOME FEATURES
Beat the challenges and try to be the best on the online ranking!

BRING YOUR FRIENDS
Ask for help to solve some pages. But I bet you can do it alone!