Double-deck variant

Emperor Solitaire

Two standard decks are shuffled together and dealt to ten tableau columns, four cards each — three face-down and one face-up. The remaining 64 cards form the stock, turned over one at a time onto the waste pile. Build eight foundation piles (one per suit, two each) upward from Ace to King. On the tableau, move single cards or packed sequences of alternating colors onto a card of the next higher rank and opposite color. Empty columns may only be filled by a King or a King-led sequence.