Forty Thieves Solitaire Online

Forty Thieves starts with forty face-up cards in ten columns of four. The other 64 cards form a draw-one stock. Move all 104 cards to eight Ace-to-King foundations while building tableau columns down by suit, one card at a time.

Forty Thieves rules: same-suit, single-card moves

  • Same-suit destinations: an 8 of Hearts fits a 9 of Hearts, not a 9 of another suit.
  • Single cards only: even a correctly ordered same-suit run cannot move as a group.
  • Empty columns: accept any single exposed card. There is no King requirement.
  • Stock: turn one card at a time and use only the top waste card. There is no redeal.
  • Foundations: build each pile up by suit from Ace through King, with two foundations per suit.

Three ways a legal move changes your available space

These simplified positions illustrate decisions in this game; they are not your current deal.

1. Use an empty column to relocate a two-card run

An 8 of Hearts with a 7 of Hearts below it cannot move together onto a 9 of Hearts. With an empty column available, move the 7 there first, move the now-exposed 8 onto the 9, then put the 7 back onto the 8. This takes three single-card moves.

Without that empty column, you would need another legal destination for the 7, such as the other exposed 8 of Hearts or a Heart foundation ready for it. The 7 cannot be parked on a black 8 just to get it out of the way.

2. A King uses a space it cannot easily leave

Compare two uses of an empty column. A parked 7 of Clubs can later move onto an exposed 8 of Clubs. A parked King of Clubs has no higher tableau rank to receive it. To recover the space without filling another empty column, you need a Club foundation that has reached Queen.

Parking a King is legal and can be useful, but it is a longer commitment than temporary storage for a lower card. You can build down on that King afterward; the new cards will also need to leave before the King itself reaches a foundation.

3. Check what you lose by sending a 4 to a foundation

Imagine a tableau column ending in a King of Clubs with a 4 of Hearts below it. One Heart foundation ends at 3, and the other copy of the 3 of Hearts is on the waste. Assume there are no empty columns or other exposed 4s of Hearts.

Two legal uses of the exposed 4 of Hearts
ChoiceImmediate effect
Send the 4 to its foundationThe King of Clubs becomes exposed. The waste 3 loses this tableau destination.
Keep the 4 and put the waste 3 on itThe older waste card is exposed, but the 4 must wait until the 3 moves away.

Both choices can be legal. The useful one depends on the waste card you would uncover and the other Heart foundation’s progress. With two decks, a second copy can still need a tableau destination even after the first copy has reached a foundation.

Keep a usable exit from each temporary pile

Check how a move will expose the card behind it. In a same-suit column, burying a low card under an unrelated high card can make it difficult to reach the foundations. An empty column gives you a place to separate such a pair.

Before filling an empty column from the waste, plan how that card will leave again. You may need the space for a rearrangement like the example. Since the stock has one pass, also inspect the waste before covering a card that is currently useful.

Common questions

Why can I not select the 8 at the start of a suited run?

Only a single exposed card can move in Forty Thieves. The 7 beneath the 8 must leave first, even though 8–7 is correctly ordered. This game does not use FreeCell-style group moves.

Do duplicate cards have to stay with their original deck?

No. The two copies follow the same rules. Either 4 of Hearts can follow either 3 of Hearts on a foundation, provided that 3 is its exposed top. You still need two separate Ace-to-King foundations for each suit.

What can I do with cards still in the waste after the stock ends?

Keep playing the exposed waste top whenever it has a legal destination. Each removal exposes the card beneath it. The stock does not recycle, so a buried waste card needs the cards above it moved away first.

Working one card at a time

Select the exposed end card, then its destination pile. Clicking a buried 8 cannot select an 8–7 group here. To follow the first example, make the three separate moves and watch the move counter advance each time; Undo steps back through those actions individually.

  • Click or tap an exposed card, then its destination. Only one card moves at a time. Select it again to cancel. The message below the board explains the current selection or move.
  • Undo reverses your last action. Hint highlights a legal action and describes it below the board; it does not calculate a complete winning route.
  • New starts a fresh shuffle. Daily starts this game's dated challenge. Both replace the current board.
  • Full Screen gives the board more room. On a narrow screen, scroll sideways inside the board to reach all its piles.

Double Klondike uses two decks but permits ordered alternating-color packets. For one deck with same-suit group moves and storage cells, try Baker's Game. Crescent also moves single cards but allows tableau building in both directions.

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