The dimension of the chessboards and the pawns is defined by the national chess federation, for the competitions. These proportions are kept commercially for leisure games of smaller dimensions.
In the table below, you will find the theoretical dimensions of the chessboards and the corresponding pieces. This can vary to meet practical or aesthetic criteria.
The great golden rule fixing the proportions is the following:
Two pieces each positioned in the opposite corners of two adjacent diagonal squares must leave room for a third piece to pass between them without hindrance.
