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Count by one, two, three, four

Calculation

One deck
The Calculation board1 stock, 4 foundations, 4 tableaus. Fanned piles are shown with a trail of cards.
StockFoundationTableau

Goal: move every card to the four foundations. Suit does not matter.

  • The foundations start with Ace, 2, 3, and 4. They advance by 1, 2, 3, and 4 ranks respectively, wrapping after King.
  • The sequences all end at King: A-2-3...; 2-4-6...; 3-6-9...; and 4-8-Q....
  • Play the face-up stock card straight to a foundation or park it on one of four holding piles.
  • Holding piles accept stock cards in any order, but only their top card can leave, and cards cannot move between holding piles. Plan carefully: there is no redeal.
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