Odd and Even

Game Objective:

The objective of Odd and Even Solitaire is to move all cards from the reserve, stock, and waste to the foundation piles, building them in a unique sequence by twos, until every card from both decks is placed in the foundations.

Setup & Layout:

• Deck: Use two standard 52-card decks (104 cards total).
• Reserve: Deal nine cards face-up in a 3x3 grid; this is the reserve. All reserve cards are available for play.
• Foundations: There are eight foundation piles, one for each Ace and Two (Deuce) of every suit. These are created as the corresponding cards become available.
• Stock: The remaining cards form the face-down stock pile.
• Waste: When a card from the stock cannot be played, it is placed face-up on the waste pile. Only the top card of the waste is available for play.
• Face Orientation: All reserve cards are dealt face-up. The stock is face-down. The waste is face-up (top card only accessible). Foundations are built face-up.

Key Play Areas:

• Reserve: 3x3 grid of nine face-up cards.
• Foundations: Eight piles (one for each Ace and Two).
• Stock: Face-down draw pile.
• Waste: Face-up discard pile.

Odd and Even Solitaire Rules:

• Foundations:
• Each suit has two foundation piles: one starting with an Ace, one with a Two.
• Building on Aces: Build up in suit by twos, using only odd-numbered ranks, in this sequence:
  A, 3, 5, 7, 9, J, K.
  After King, continue with: 2, 4, 6, 8, 10, Q (even numbers).
• Building on Twos: Build up in suit by twos, using only even-numbered ranks, in this sequence:
  2, 4, 6, 8, 10, Q.
  After Queen, continue with: A, 3, 5, 7, 9, J, K (odd numbers).
• Building is always in suit and in steps of two ranks (e.g., 3 on Ace, 5 on 3, etc.).
• Reserve:
• Cards in the reserve are always available for play to the foundations.
• No building or moving between reserve piles.
• Each reserve pile holds only one card at a time.
• Stock and Waste:
• When no moves can be made from the reserve or waste, draw one card at a time from the stock.
• If the drawn card cannot be played, place it face-up on the waste.
• Only the top card of the waste is available for play to the foundations or to fill reserve gaps.
• Redeal:
• One redeal is permitted. When the stock is exhausted, pick up the waste pile (without shuffling), turn it over to form a new stock, and continue.

Gameplay:

• Turn Sequence:
• Move any available card from the reserve or the top of the waste to the foundations if it fits the building sequence and suit.
• Whenever a reserve space is emptied, immediately fill it with the top card from the waste. If the waste is empty, fill from the stock.
• If no further moves are possible, draw one card from the stock and place it on the waste (if it cannot be played directly).
• Continue this process, always playing to the foundations when possible, and refilling reserve spaces as described.
• Redeal:
• When the stock is depleted, gather the waste pile, turn it over (do not shuffle), and use it as the new stock. Only one redeal is allowed per game.
• End of Play:
• The game ends when either all cards are moved to the foundations (win) or no further moves are possible after the redeal (loss).

Winning & Losing Conditions:

• Win: The game is won when all 104 cards have been moved to the foundation piles, correctly sequenced by suit and by twos.
• Loss: The game is lost if, after the single allowed redeal, there are still cards remaining in the reserve, stock, or waste that cannot be played to the foundations.

Special Rules & Edge Cases:

• Filling Reserve Spaces:
  Any empty space in the reserve is filled immediately, first from the waste (if available), then from the stock if the waste is empty.
• No Building on Reserve:
  Cards cannot be built or moved between reserve piles; only the top card of each reserve pile is available for foundation play.
• No Building on Waste:
  Only the top card of the waste is available for play; no cards can be moved onto the waste except from the stock.
• Sequence Wrapping:
  When building on foundations, after reaching the end of the sequence (King for odd, Queen for even), continue the next sequence as specified (e.g., after King, play 2; after Queen, play Ace).
• One Card Movement:
  Only individual cards may be moved at a time; sequences cannot be moved as a group.
• No Further Redeals:
  Only one redeal is permitted. After the second pass through the stock, no further redeals are allowed.

This guide reflects the official and most widely accepted rules for Odd and Even Solitaire, focusing strictly on gameplay mechanics and omitting non-essential content.