Unique because in this game, there is no Tableau. Reserve piles can ONLY play onto Foundations OR onto the Waste Pile.
Foundations build in suit (Ace piles build up, King piles build down). Cards are turned up from the deck one at a time. If they cannot play onto the Foundations, they are moved to the Waste Pile. Cards from the Reserve can play onto the Waste Pile provided the destination card is the same suit and one rank higher or lower. Two redeals are allowed.
Try this game if you enjoy a challenge. Alhambra is very difficult to win.