Also known as calculation and Broken Intervals, this solitaire card game requires thought and foresignt.
One standard deck of 52 cards is required.
Choose any A, 2,3 and 4 and lay them in a row at the top of the table as foundation cards. All the remaining cards, held face down, are called the stock. Four discard piles are formed below the foundation cards as the game progresses.
The aim is to build on each foundation card in the following order:
On A, build A,2,3,4,5,6,7,8,9,10,J,Q,K in increasing value of 1
On 2, build 2,4,6,8,10,Q,A,3,5,7,9,J,K in increasing value of 2
On 3, build 3,6,9,Q,2,5,8,J,A,4,7,10,K in increasing value of 3
On 4, build 4,8,Q,3,7,J,2,6,10,A,5,9,K in increasing value of 4
One card is turned up from the stock and may be placed overlapping any of the foundation cards, to begin building. If a cards cannot be used to build, it may be placed face up on any of the four discard piles. As the game continues, the top card of any discard pile may be used to build, but may not be transferred to another discard pile.