Answer:
What is used by man, tossed by trees, everywhere but unseen?
It is in every mountain, it's not in any hill, it's not in all the world, and yet it's in the mill.
It is where kings, queens, knights and bishops go to war together.
A tower at the root of all confusion.
What has black spots and a white face, is fat not thin, and helps you to win, but tumbles all over the place?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?