Number Rotation

"Number Rotation" is a puzzle game to sort the numbers on a circular shape in order.
Please sort numbers arranged in a circular to 1,2,3... in the clockwise direction.
The goal is completing sorting.
Operation to sort is below.
Select any semicircular area (Touch any number and the clockwise semicircular area of numbers will be selected. When selecting, the semicircular area will blink.) and invert by touching the "Turn Inv" button.

[EX.1]octagon case, the numbers on a semicircular area are clockwisely "5,3,4,7"
Before inversion "5,3,4,7" -> After inversion "7,4,3,5"

[EX.2]decagon case, the numbers on a semicircular area are clockwisely "10,4,5,8,1"
Before inversion "10,4,5,8,1" -> After inversion "1,8,5,4,10"

By repeating inversions of numbers on semicircular areas, aim for perfection.

There are 3 difficulty levels following.

[1]Level 1 : hexagon (numbers:1,2,3,4,5,6)
[2]Level 2 : octagon (numbers:1,2,3,4,5,6,7,8)
[3]Level 3 : decagon (numbers:1,2,3,4,5,6,7,8,9,10)

Let's try the intellectual puzzle that is different from 15 puzzle and rubik's cube!