Tri Peaks Solitaire Rules. Setup. The game board in Tri Peaks Solitaire is made up of: Three Peaks: There are three peaks (pyramids), each one is 4 cards high. Tri Peaks Solitaire is a free online game where you flip the cards on all three peaks to win in this classic, super addictive solitaire card game. Play CNN's Tri - Peaks Solitaire. Tri - Peaks Solitaire is a fun and engaging free online game. Play it and other CNN games!.