A 98-page manuscript ordered by Alfonso the Wise (1221-1284), King of Castile. It included chess, backgammon, and games of chance with dice. Compiled in 1283, it is entitled Juegos Diuersos de Axedrez, Dados, y Tablas con sus Explications, Ordenudos por man Dado Del Rey don Alonso el Sabio. It is the first source mentioning the pawn's double move on the first move. It also includes 103 chess problems. The manuscript was written by the monks of the monastery of St. Lorenzo del Escorial, near Madrid.