There are 64 squares on a chessboard.
A chessboard is not 9 by 9.
there are 204 total squares on a chessboard or a checkerboard
There are 32 dark chessboard squares with 16 black chessmen .
204
64
The Grand Chessboard written by Zbigniew Brzezinski contains around 240 pages in its paperback edition.
64
204
there is no formula - the answer is 64
64 squares.
It depends on the size of the chessboard.