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Calculation by Threes

Original Solitaire

Game info: Mathematical games type; 1 deck (52 cards); 3 redeals

  • Game time: Long
  • Difficulty level: Hard
  • Skill level: Difficult
  • Chance of winning: Low; about 1 in 30; 3.3%

Object of the game: To total winning hands using mathematical calculations with the cards on the tableau.

Solitaire Rules

Value to Reach

  • The sum of the face values of the three cards in the upper row determine the value to reach in each of the hands.


  • Place cards from the waste to the lower row, as advantageous, in order to reach the sum of the face values of the upper row.

  • Once placed, a card cannot be moved.

  • It is possible to reach the sum with less than three cards. For example, if the three cards of the upper row total to 13, you can discard them with a King, a 6 and a 7, or with an Ace, a 4 and an 8.

  • When the two sums equal, all the cards are discarded and three new cards are automatically dealt to the tableau.

  • When the stock is exhausted, click on the Redeal button to shuffle the cards to start over.

  • Three redeals are permitted (four deals in all).

  • The game is won if you successfully discard all the cards of the stock.

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