Klondike Solitaire is one of the most popular and recognizable versions of solitaire. Also known as “Classic Solitaire,” it has been included in many computer operating systems over the years, contributing to its widespread appeal. The game is played with a standard deck of 52 cards, arranged in seven piles of increasing card numbers. Players must sort cards by alternating colors in descending order, aiming to build four foundation piles from Ace to King in each suit. Klondike Solitaire’s gameplay relies on strategy, skill, and a bit of luck, as players need to plan their moves carefully to reveal and access hidden cards. Its popularity has led to many variations and adaptations, solidifying it as a timeless card game.