The relationship between pieces and squares is the most critical factor for comfort.

: The base of your king should occupy roughly 75% to 80% of the square.

: A well-sized board should allow you to fit four pawns comfortably within a single square. Play Chess with a Touch of Royalty and Luxury - Chessbazaar

: Smaller boards with 2-inch squares are often preferred for standard coffee tables to save space.

: Official FIDE and USCF boards typically feature 2.25-inch (57mm) squares.