How to Play Quadrangle Solitaire

A challenging two-deck game from the Forty Thieves family. The foundation base rank is determined randomly each deal, requiring adaptability and careful planning.

Setup

1. One card is dealt to the first foundation pile to reveal a randomly chosen base rank; all eight foundation piles must be built up starting from that same rank
2. The tableau has 12 columns with 3 cards each, all face-up
3. Remaining 67 cards form the stock
4. One waste pile receives cards drawn from the stock

How to play

• The randomly chosen base rank determines every foundation's starting point (e.g., if 7 is chosen, every foundation pile must begin with a 7 as it's built up, even though only one 7 is dealt out at the start)
• Build on foundations upward by one rank in the same suit, wrapping around (King continues to Ace)
• On the tableau, build downward by one rank in the same suit; only top cards move
• Move one card at a time from the tableau to foundations or between tableau columns
• Click the stock to deal one card to the waste (one pass only, no redeal)
• When a tableau pile empties, it's automatically refilled with the top card from the waste pile, or the stock if the waste is empty
• Cards that can't be built anywhere else move to the foundations automatically (you can change this in Settings)

How to win

Objective: Move all 104 cards from the two decks to eight foundation piles by building upward in matching suits from a randomly chosen starting rank.

You win when all 104 cards are moved to the eight foundation piles. You're stuck when the stock is exhausted and no legal moves remain.

Tips

• Adapt your strategy to the random base rank—each game starts differently
• Create empty tableau piles strategically to maneuver cards and maximize foundation moves
• Plan ahead since you only have one pass through the stock

Play Quadrangle free on Windows

CardTray is a free solitaire app for Windows that includes Quadrangle alongside 300+ other games. It saves every move as you play, so you can close the window and pick the game up later, replay any deal, and take on a new Daily Challenge deal every day. Browse every game in the Game Gallery.

Related games

More games from the Forty Thieves family:

• Robie — A two-deck game where the tableau begins empty and fills as you play, giving you maximum flexibility from the start since you can place any card from the stock or waste to open up space.
• Sixty Thieves — A large-scale Forty Thieves relative played with three decks.
• Thieves Rush — A two-deck variant of Forty Thieves with three trips through the stock.
• Three Pirates — A two-deck variant of Forty Thieves featuring three waste piles instead of one.
• Waxing Moon — A very challenging two-deck Forty Thieves variant with 12 tableau columns and a strict rule: only Kings can fill empty tableau spaces.