What is the sidebar in game analysis? - Chess Forums

I am watching game analysis and I wonder what is this sidebar that displays black and white color and some numbers? And why did it change so rapidly when black made this move?

Chess, Board Game

The case against using computer chess engines during games on stream. - Chess Forums

Bugs [✓][✓][ ]:Analysis' Great Find move not fully implemented - Chess Forums

Game eval lines not showing up? - Chess Forums

Turnover Chess, Board Game

What does Hallenge mean? - Chess Forums

notification counter shows, but no notifications - Chess Forums

How to have a custom sidebar thing on your blogs - Chess Forums

A Guide to the New Analysis Board and Editor - Chess Forums

How do I see engine moves? - Chess Forums