**The puzzle**There're 9 circles, which fall into 3 categories: corners (C), edges (E) and center (X) just as below

C - E - C

E - X - E

C - E - C

**Game rule:**- Every circle has its "power", when it's power increases, it's color changes.

- All circles' starting power is 1 and the maximum power is the current puzzle level (L) + 1. (On level 1, maximum power is 2 and so on)

- When you tap on a circle, it and all its adjacent circles (horizontal and vertical only) will increase power by 1

- After extends maximum power, the power will return back to 1.

**Game goal:**Make all the circle to the maximum power

**Solution**I'll give you some tips so you can solve it on your own. Don't blame me if you just click on the last spoiler to see the solutions.

**Tip 1:****Tip 2:****Tip 3:****Tip 4:****Tip 5:****Tip 6:****Solution: **Congrats!!! You solved the puzzle.

I played this puzzle before, even before TCO. There's a map dedicated for this puzzle and it has about ten or more level. I forgot the name of that map, I don't know if Aero played that map or not. It took me half a day to figure out the solution for that map so when I see it in TCO, I just laugh =]]]]]

@Aero, I love puzzles, make more puzzles please :]