Calculation Solitaire - Version 1.0 Free online calculation solitaire card game. Win quickly, and play to beat your best online solitaire score. Calculation solitaire card game is playable directly out of your browser, without need to download. Calculation solitaire is like many other solitaire card games, but a little more difficult and a LOT more fun. Test your ability to predict the order of oncoming cards in this solitaire card game with strategic precision. Play free online.