Arouse your sleeping instinct! Make it simple and fun to resolve puzzles.
Believe instinct, and fight numbers!

I am not gifted in numbers. It is incredible that I could resolve 21 puzzles in 1 minute!
Formular
It seems that my retired mother and 8-year-old daughter can do better than me in numbers.
Formular
I like the simple but exquisite design, which makes it attractive.
Formular