IQ Reversi

Your brain, train in Reversi!

You have a dark piece (black).
Tap a cell to maximize the number of dark pieces!
(In all of problems, the answer is only one.)
You can get pieces of cat, girl, and so on!

MARATHON MODE : Run toward a higher level without a mistake.
TIME ATTACK MODE : Aim at a higher level in 60 seconds.

Try for a higher level in each mode!
Reaching high levels, you can get skins of pieces.