Play Calculation Solitaire Online

Calculation asks you to build four foundation sequences with different step sizes. The first foundation counts by ones, the second by twos, the third by threes, and the fourth by fours, wrapping from King back to Ace as needed. Suits do not control these sequences. Four holding piles provide the only storage for cards that cannot move up yet. The game turns each draw into a small ordering problem. Draw a card and decide which future foundation step needs it.

1. Remove one Ace, one Two, one Three, and one Four to start the four foundations. Shuffle the remaining 48 cards into the stock and leave four holding piles empty.
2. Click Draw card to reveal the next stock card. Select the revealed card, then a foundation if its rank is the next step in that foundation's sequence.
3. If no foundation can use it, put the drawn card on any holding pile. Pile order matters because only the top card can move later.
4. Move a top holding-pile card to a foundation whenever its rank becomes the next step. You cannot move a card from one holding pile to another.
5. Keep going until each foundation holds thirteen cards. All 52 cards must reach foundations to win.

• The foundation starting with Ace adds one rank per card: Ace, Two, Three, and so on.
• The Two foundation adds two: Two, Four, Six, Eight, Ten, Queen, Ace, and onward.
• The Three and Four foundations add three and four respectively. Count ranks cyclically from Ace through King.
• A foundation accepts a card of any suit if its rank matches the next required rank. Each foundation takes thirteen cards.
• You may park a drawn card on any of four piles. Only the top card of a holding pile can leave, and it may move only to a foundation.

• Read the next needed rank on all four foundations before parking a draw. A card that can move immediately should usually leave the waste.
• Keep low-priority cards under cards that will move soon. A King buried under a needed Six could block a long sequence.
• Treat the four piles as queues you can control from the top. Group cards by the foundation that will need them when possible.
• Track the wrap. On the Two foundation, Queen is followed by Ace, not King.
• Save a pile with a playable top card for later if another pile needs the same rank sooner. Suit never breaks a tie.

• Broken Intervals: Another name for Calculation, reflecting its uneven foundation steps.
• Klondike Solitaire: Klondike uses suits and alternating colors instead of four modular rank sequences.

• Each foundation follows a countable pattern. Learning the steps lets you recognize useful draws without consulting a separate chart every turn.
• Suits do not distract from the ordering problem. Any card of the next needed rank fits, so the challenge centers on timing.
• Four holding piles give meaningful choices. Which pile receives a Jack may determine when you can reach a Six beneath it.
• The next needed rank is always visible on each foundation. Look at the top cards before you choose where to park a new draw.
• A short deal can produce a late recovery when several blocked pile tops become playable in sequence. Keep checking every pile after each foundation move.

Try Calculation online free. Draw one card, place it on a foundation or a holding pile, and use the visible rank sequences to plan ahead. Undo a placement if you want to test a different pile.

Calculation gives every card a potential destination, but the holding-pile order decides when you can reach it. Watch the next rank on each foundation, leave room for awkward draws, and try a new deal when a pile blocks your progress.

• Calculation rules and foundation sequences
• How to Play Calculation, Solitaire Whizz