Tvete's Grandfather

Game Objective:

The primary goal of Tvete's Grandfather Solitaire is to move all cards from the tableau to the foundation piles, building each foundation pile completely according to its specific rules.

Setup & Layout:

• Deck: Use a standard 52-card deck (no jokers).
• Tableau: Deal 20 piles, each with one card, all face-up. These are called the tableau piles.
• Foundations: There are four foundation piles, initially empty.
• Stock and Waste: The remaining 32 cards form the stock pile, placed face-down. The waste pile is created as cards are drawn from the stock.
• Key Play Areas:
• Tableau: 20 face-up piles, each holding a single card.
• Foundations: 4 piles to build up by suit from Ace to King.
• Stock: Face-down pile from which cards are drawn.
• Waste: Face-up pile where drawn cards are placed.

Tvete's Grandfather Solitaire Rules:

• Foundation Building:
• Only Aces may start a foundation pile.
• Cards are built up by suit (e.g., Ace, 2, 3, …, King of the same suit).
• Only one foundation pile per suit.
• Cards cannot be removed from the foundation once placed.
• Tableau Building:
• Cards may be built down by suit (e.g., 7♠ on 8♠).
• Only one card may be moved at a time, or a sequence of cards in descending order and of the same suit may be moved as a unit.
• Stock and Waste:
• When no moves are available, draw one card at a time from the stock to the waste pile.
• The top card of the waste pile is available for play to either the tableau or the foundations.
• Empty Tableau Piles:
• Any card may be moved to an empty tableau pile.

Gameplay:

• On each turn, you may:
• Move the top card of a tableau pile to another tableau pile (if it is one rank lower and of the same suit).
• Move the top card of a tableau pile to a foundation pile (if it is the next rank in sequence and of the same suit).
• Move a sequence of cards in descending order and of the same suit from one tableau pile to another.
• Move the top card of the waste pile to the tableau or foundation, following the same rules.
• If no moves are possible:
• Draw a card from the stock and place it on the waste pile.
• Continue play with the new waste card.
• If the stock is depleted and no further moves are possible, the game ends.

Winning & Losing Conditions:

• Win: The game is won when all cards are correctly moved to the foundation piles, each built up by suit from Ace to King.
• Lose: The game is lost if the stock is empty and no further legal moves are possible on the tableau or waste pile.

Special Rules & Edge Cases:

• Empty Tableau Piles: Any card (or valid sequence) may be moved to an empty tableau pile.
• Moving Sequences: Only sequences of cards in perfect descending order and of the same suit may be moved as a group.
• No Redeals: Once the stock is exhausted, there are no redeals; play continues only with available moves.
• Foundation Restrictions: Once a card is placed on a foundation, it cannot be moved back to the tableau or waste.
• Waste Pile: Only the top card of the waste is available for play; cards underneath are inaccessible until the top is moved.

Note: Tvete's Grandfather Solitaire is distinct from other "Grandfather" variants by its strict suit-matching and sequence-moving rules, as well as its single foundation pile per suit and lack of redeals.