Free online dog-themed solitaire card game. Calculation Solitaire is like most other solitaire card games, but a bit more involved. Our dog solitaire card game features interesting graphics and enthralling gameplay. Your high score is recorded every time you play calculation solitaire, and is ready for you to beat next time you stop on by the website. Play calculation solitaire, and other solitaire card games, directly out of your browser without any need to download!