Triangle Solitaire game develops your logical thinking. In this game you have a pile of cards stacked on top of each other. You need to get to the top of this pyramid by folding the cards in pairs to make up a certain sum. You need to lay out the cards removing by 2 open ones. The sum of the card values should be 13. You can also draw a card from the auxiliary deck at the bottom of the screen. King is the only card that can be removed alone. You don’t need to look for a pair for this card.