Matrimony is a solitaire card game: which uses two decks of 52 playing cards each. Matrimony is a difficult game which depends mostly on luck and is sometimes mechanical. While the words matrimony and marriage are synonymous with each other, this game should not be confused with another solitaire game Royal Marriage, which is sometimes also given the name Matrimony. Like many patience games, there is more than one set of rules, and there are two main versions of Matrimony. The one described below is from Peter Arnold's Card Games for One.