Why are there dots on certain squares when you click on a piece?
Those dots show all the legal moves that piece can make! This feature is on by default on new accounts, but if you’d like to turn it off, here’s how!
From anywhere on chess.com, click on the settings gear icon on the bottom left of the page
from the settings menu, click ‘Board & Pieces’
Toggle the switch that says ‘show legal moves’ so that it is grey, not green
Don't forget to click Save!
Now your games will no longer show the legal moves dots!