Thumb Chess is played on a specifically designed small-sized board with spots along the perimeter of the top for your thumbs to rest during play. High strategy in a small package you can play anywhere. You just need the Thumb Chess board and four thumbs. On a player's turn they move one of their thumbs to a new space following chess-inspired movement rules. The spots all have a chess piece associated with them. Your left thumb moves according to the rules of the piece associated with your right thumb's position, and vice versa. The goal is to get your thumbs to Checkmate an opponent's thumb by getting your thumbs into both spots surrounding it. —description from the publisher