Or, Full and Easy Instructions for Playing the Games Now in Vogue, After the Best Method ; as They are Play'd at Court, and in the Assemblies, Viz. Ombre, Picquet, And The Royal Game of Chess. Wherein The Frauds in Play are Detected, and the Laws of Each Game Annex'd, to Prevent Disputes. Written for the Use of the Young Princess. By Richard Seymour, Esq