Chess is a brain bracing board game, played with 2 players on opposite sides, having 64 squares of alternate black and white colors. Each player commands an army of 16 pieces, includes 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns. The sides where the armies are placed is marked by letters (a-h), and the other sides are marked by numbers (1-8).