# How many moves?

A move is one circle being moved to another place.

Here's an image of what I'm talking about;

Which is able to be done in 3 moves.

A more challenging one-

How many moves minimum?

• You'll need to specify what a "move" is. – Duncan May 24 '16 at 23:31

$$h = \text{height of triangle}\\\text{moves}=\left\lfloor\dfrac{h(h+1)}6\right\rfloor$$