How to resize the board on Chess.com
To adjust your board size, hover your mouse over the bottom right corner of the board until the resizing icon appears. Just click and drag the icon left or right to resize the board.
This feature is only available on the Chess.com desktop website and is not supported on mobile apps or mobile browsers.
Additional board settings
If you hover the mouse over the space between the board and the right sidebar, additional options will appear: Settings, Focus Mode, Theatre Mode and Flip Board.
Settings
Clicking the gear icon opens a pop-up menu with tabs and toggles to customize your settings. Click 'Save' to apply your changes.
Check out this article to learn more about the board settings: How do I change my background, board, and pieces?
Focus Mode
Enlarges the board and hides the sidebar, providing a more immersive focus on the game being played. To exit Focus Mode, just click the 'X' at the top left corner of your screen.
Theatre Mode
Expands the board and relocates the timers and players' information to the left side. Similar to 'Focus Mode,' but the sidebar is still visible. To exit Theatre Mode, just click the 'X' at the top left corner of your screen.
Flip Board
Allows you to rotate the board.