Why are there dots on certain squares when you click on a piece? These 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:
Click the icon on the bottom left menu of any page on Chess.com
From the settings menu, click ‘Board & Pieces’ and toggle the option ‘Show Legal Moves’ to your liking:
Click 'Save' to apply the changes.