Pyramid Solitaire
This is a solitaire where cards are placed in the shape of a pyramid while each card except those from the bottom line is blocked by 2 other cards from the line below.
Instructions:
You can only use the unblocked cards from the pyramid and from the 3 slots at the bottom. If you don't have any options you can open the next 3 cards from the deck or place one of the unblocked cards to the spare card slot. This slot is very useful, but you must remember that it can only contain 1 ...