Quadruple Yukon

Game Objective:

The primary goal in Quadruple Yukon Solitaire is to move all 208 cards (using four standard 52-card decks) to the sixteen foundation piles, building each foundation up in suit from Ace to King.

Setup & Layout:

• Deck: Four standard 52-card decks (total 208 cards), no Jokers.
• Play Areas:
• Foundations: Sixteen piles, each to be built up in suit from Ace to King.
• Tableau: Sixteen tableau piles.
• Dealing the Tableau:
• Pile 1: 1 card, face up.
• Piles 2–13: For each pile, deal a number of cards equal to its pile number (e.g., 2 to pile 2, 3 to pile 3, etc.), with the top card face up.
• Additional Dealing: For piles 2 through 13, deal 5 extra face-up cards to each. For piles 14 through 16, deal 4 extra face-up cards to each.
• All cards in the tableau are dealt face up except for the bottom cards in each pile, which may be face down depending on the implementation. Most online versions deal all tableau cards face up for visibility and playability.
• No Stock or Reserve: All cards are in play at the start; there is no stock or reserve pile.

Quadruple Yukon Solitaire Rules:

• Foundations:
• Build up by suit, starting with Ace and ending with King (e.g., Ace♠, 2♠, 3♠, …, King♠).
• Only an Ace may be placed on an empty foundation.
• Tableau:
• Build down by alternating color (e.g., a red 7 on a black 8).
• Any face-up card, regardless of its position within a pile, may be moved, along with all cards on top of it, as a unit.
• The moved unit does not need to be in sequence; only the top card of the moving group must form a valid alternating color sequence with the destination card.
• Empty tableau piles may only be filled with a King or a group of cards headed by a King.
• Movement:
• Cards or groups of cards are moved according to tableau building rules.
• Cards may be moved to the foundations if they are the next in sequence and suit.
• Cards on the foundations may also be moved back to the tableau if this helps continue building sequences.

Gameplay:

• Player Actions:
• Move any face-up card (and all cards above it) within the tableau to another tableau pile, provided the move creates a descending sequence of alternating colors.
• Move Aces to empty foundation piles, then continue building up in suit.
• Move cards from the tableau to the foundations whenever possible.
• Move cards from the foundations back to the tableau if it enables further play.
• No Stock: All cards are dealt at the start; no new cards are introduced during play.
• When No Moves Remain: If no legal moves are possible and not all cards are in the foundations, the game is lost.

Winning & Losing Conditions:

• Winning: The game is won when all 208 cards are moved to the sixteen foundation piles, each built up in suit from Ace to King.
• Losing: The game is lost if no further legal moves are possible and not all cards have been moved to the foundations.

Special Rules & Edge Cases:

• Filling Empty Tableau Spaces:
• Only a King or a group of cards headed by a King may be moved into an empty tableau pile.
• Moving Groups of Cards:
• Any group of face-up cards may be moved together, regardless of their internal sequence; only the top card's relationship to the destination pile matters.
• Turning Up Cards:
• If any face-down cards are exposed (in implementations that use face-down cards), they are immediately turned face up and become available for play.
• No Redeal: There is no redeal, as all cards are in play from the start.
• Cards on Foundations: In some versions, the top card of a foundation may be moved back to the tableau if it helps continue building sequences.

Key Definitions:

• Foundation: A pile where cards are built up in suit from Ace to King.
• Tableau: The main play area where cards are arranged in columns and built down by alternating color.
• Group Move: Moving a face-up card and all cards above it as a single unit, regardless of their sequence.

This ruleset reflects the standard and most widely accepted implementation of Quadruple Yukon Solitaire.