Goal — Move all 52 cards to the four foundation piles, one per suit, built up from Ace to King.
Tableau — Stack cards in descending rank and alternating color (red on black, black on red). Only a King may be placed on an empty column.
Stock & Waste — Click the stock pile (top-left) to flip cards to the waste. Only the top waste card can be played. When the stock is empty, click it to recycle the waste.
Moving cards — Drag a card (or a face-up stack) to a valid tableau column or foundation, or click a card to auto-move it to the best available spot.
Flipping — Click a face-down card on top of a column to flip it over.