Learn about Forty Thieves Solitaire
Forty Thieves is a card game you play by yourself. You use two decks (104 cards). You deal out forty cards into ten stacks. These are all face up so you can see them. The rest of the cards stay in a pile you’ll draw from when you need more moves.
Your job is to move cards so that you build piles for each suit (hearts, spades, clubs, diamonds) from Ace up to King — that means Ace first, then 2, then 3, and so on, up to King. You do that eight times because you have two of each card. You can only move one card at a time. If you want to put a card on a stack in the tableau, it has to be one rank lower and the same suit (for example, 7 of diamonds on 8 of diamonds).
You also use the stock pile — you flip cards one by one from it into a waste pile. That top card from the waste can also go into the tableau or the foundations if it fits. You only get one pass through the stock. If you build all the foundation piles, you win. If not, you try again with smarter moves.