Chessboard - online puzzles

A chessboard is the type of checkerboard used in the board game chess, consisting of 64 squares (eight rows and eight columns). The squares are arranged in two alternating colors ( light and dark ). Wooden boards may use naturally light and dark brown woods, while plastic and vinyl boards often use brown or green for the dark squares and shades such as buff or cream for the light squares. Materials vary widely; while wooden boards are generally used in high-level games ; vinyl, plastic, and cardboard are common for low-level and informal play. Decorative glass and marble boards are available but rarely accepted for games rated by national or international chess federations.

According to FIDE equipment standards, the side of a square should be twice the diameter of a pawn's base.