For all official FIDE tournaments, the table length is 110 cm (with a tolerance of 15%) and the width is 85 cm (at least 15 cm for each player). The table height is 74 cm. It is important to distinguish between the chess sets that a tournament player MUST wear to a tournament and those that the average citizen can play informally. Most players don't need to play with the typical size of a tournament chessboard, the standard chessboard size is suitable for the average player.
In the US, a standard chess board has a square size of between 2 and 2.5 inches. So for a 2.5-inch square board, you could have chess pieces with a base of 1.5 to 1.87 inches. Or for the smaller 2-inch square board, the chess pieces should have 1.2 to 1.5 inch bases. The typical size of a regulatory chessboard is twenty-one inches long and twenty-one inches wide.
The thickness would be three-quarters of an inch. The ideal size of the individual squares on the chessboard would be two inches long and wide each. The World Chess Federation (FIDE) states that the size of each square for the tournament must be between 5 and 6 cm, which is equivalent to between 1.97 and 2.36 inches. The perfect size for a chessboard is 20 x 20 inches, with a square size of 2.25 inches x 2.25 inches that provides ample space for a good set of chess players to sit comfortably in the individual squares based on a king of 3.75 inches in height and 1.5 inches in diameter at the base. When buying a chessboard and a set of chess pieces, it's vitally important to get the right size. The United States Chess Federation (USCF) states that the size of the square must measure between 2 and 2.5 inches, while the height of the king must measure from 3.375 inches to 4.5 inches. The measurements are made by measuring the length of the game squares and the height of the chess pieces you use.
The standard USCF and FIDE World Championship chess games are just two examples of board and set combinations. When the chessboard is ready to start a game, half of the squares are occupied by the pieces, while the 32 squares in the middle are left open for play. If the chessboard is too big for the pieces you already have, although you won't have trouble moving them around the board, they may look a little lost.
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