Windmill (card game)

Windmill is a solitaire card game for one player using two decks of playing cards, also known by the name Propeller. It takes its name from its opening layout, which looks like the sails of a windmill. One ace is placed in the centre as the primary foundation, and eight cards are set around it in the form of a cross to make the reserve, leaving gaps at the corners of the sails that are kept for kings, which start the four secondary foundations. The aim is to build the primary foundation up to a king until it holds 52 cards and to build each secondary foundation down to an ace with 13 cards each, regardless of suit. Gaps in the reserve are refilled at once from the wastepile or the stock, and there is no redeal. The game is mechanical and is not won very often. A variation reverses the direction of building.