Klondike, also known as Canfield, is a card game for one player and the best known and most popular version of the patience or solitaire family, something which "defies explanation" as it has one of the lowest rates of success ofany such game. Partly because of that, it has spawned numerous variants including Batsford, Easthaven, King Albert, Thumb and Pouch, Somerset or Usk and Whitehead, as well as the American variants of the games, Agnes and Westcliff. The distinguishing feature of all variants is a triangular layout of the tableau, building in ascending sequence and packing in descending order