A checkerboard has 64 squares. Half are light squares while the other 32 are dark squares. The board is positioned in a way so that each player has a light square on the right-side corner closest to him.
Checkerboards are used to play the game called checkers. In the game, each player receives 12 colored discs. Usually, one set of pieces is black and the other set is red. The pieces are set on the 12 dark squares closest to each player. Besides the board used in checkers, more generally, any board with a checkered pattern is referred to as a "checkerboard."