Jack (playing card) Jack (playing card) A jack or knave is a playing card which, in traditional French and English decks, pictures a man in the traditional or historic aristocratic dress generally associated with Europe of the 16th or 17th century. The usual rank of a jack, within its suit, plays as if it was an 11 (that is, between the 10 and the queen). As the lowest face (or "court") card, the jack often represents a minimum standard — for example, many poker games require a minimum hand of a pair of jacks ("jacks or better") in order to continue play. The
Jack (playing card) of the king ("Kn" versus "K"), the two were easily confused. This confusion was even more pronounced after the markings indicating suits and rankings were moved to the corners of the card, a move which enabled players to "fan" a hand of cards without obscuring the individual suits and ranks. The earliest deck known of this type is from 1693, but such positioning did not become widespread until reintroduced by Hart in 1864, together with the knave-to-jack change. Books of card games published in the third quarter of the 19th century still referred to the "knave" however, a term that