The game of chess was then played and known in all European countries. A famous 13th-century manuscript covering chess, backgammon, and dice is known as the Libro de los juegos. The rules were fundamentally similar to those of the Arabic shatranj. The differences were mostly in the use of a checkered board instead of a plain monochrome board used by Arabs and the habit of allowing some or all pawns to make an initial double step. In some regions, the Queen, which had replaced the Vizier, and/or the King could also make an initial two-square leap under some conditions. More info
