In this game, you are randomly dealt four cards. You want to use the numbers (ranks) of the four cards to calculate the result of value 12. You can use addition, subtraction, multiplication, and division with the four numbers, and you can use the four numbers in any orders. However, you can only use each numbers
once and must use all the numbers and their intermediate results.
Tap a card to select a card. Tap another card to swap cards.
Tap a operation to edit or delete with bottom buttons.
Tap "No solution" button if you think that the current game has no solution. You have lost the current game if solution exist.
This image is a schematic representation, not a screenshot from the game. Screenshots are platform specific. You can see screenshots in the store.
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