The goal of Tri Peaks is to clear all the cards on the table. Simply tap face up cards that are either one above or one below the top card of the waste pile.
Each card in the sequence is moved to the waste pile so you can make a chain of cards. Clear as many cards as you can with your chain before you have to deal a new card from the reserve.
When you run out of cards to add to your chain and there are no more cards in the reserve, your game has reached its end.