Calculation is a really odd solitaire card game. It's not much like any other solitaire game that I've played. It takes a little bit of gettting used to, but once you do it's pretty fun. I'll put up a video tutorial to explain how it works, but here's a quick summary.
So Calculation Solitaire has four foundations, but you don't need to worry about suit when you build them up. You need to alternate numbers according to the card that appears to the right of each foundation. The top foundation has an Ace or 1 value, so you place the cards in order starting with a 2 (2, 3, 4, 5... etc).
The foundation below it has a 2 next to it so you have to put a card with every other value starting with 4 (4, 6, 8, 10... etc). The one below that has a 3 next to it so you alternate by values of 3, starting at 6 (6, 9, Queen). Don't worry... you don't have to remember any of this, because I put the value of the next card you have to place to the left of the foundation.
Ok, so you also have five piles of cards that go across the top of the game. Unlike in just about every other solitaire card game out there, you can't move cards from the piles once you've placed it there. The way you play is to start by clicking the deck, which takes a card off the top. Then you either need to place that card into one of the piles, or on to one of the foundations.
Another weird thing about Calculation Solitaire is you don't have to place the cards in the pile in any particular order. You do have to take them off the pile in reverse order that you put them in. In other words you can only take the top card off the pile to place it into the foundation. And, as I said before, you can't move cards between piles.
I hope you like it, and please let me know if you have any suggestions.
Thanks for playing,