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Double Klondike is a two-deck Klondike variant with a 55% win rate, played with 104 cards. Cards are dealt into nine tableau columns of increasing length, and the goal is to build eight foundation piles from Ace to King by suit. Build tableau sequences down in alternating colors and draw from the stock when stuck.

Easthaven is a single-deck solitaire blending Spider and Klondike mechanics with a 25% win rate. Seven tableau columns of three cards each start with one face-up card. The stock deals one card to each column simultaneously. Sequences build down in alternating colors toward four foundations built up by suit from Ace to King.

Easthaven Klondike is a single-deck solitaire where each deal drops one card face-up onto each of the seven tableau columns instead of to a waste pile. Sequences build down in alternating colors. The goal is to move all 52 cards to four foundation piles built up by suit from Ace to King.

Yukon is a single-deck solitaire variant with a 25% win rate, similar to Klondike but with no stock pile. Columns 2-7 have face-down cards beneath face-up cards. Players move any face-up card or sequence — regardless of order — between tableau columns to build four foundation piles from Ace to King by suit.