Goal of the game
Move all 104 cards (two complete decks) onto the eight foundations, in ascending order and by suit (Spades on Spades, Hearts on Hearts, Diamonds on Diamonds, Clubs on Clubs), from Ace to King. The game is won when each foundation holds all 13 cards of its suit, twice — eight foundations × 13 cards = 104 cards total.
Setup
Shuffle two standard 52-card decks together (104 cards). Deal them face-up into ten tableau columns of four cards each (40 cards total). The remaining 64 cards form the stock pile, dealt face-up onto a single waste pile one card at a time. Place the eight foundations above the tableau — empty at the start, one for each suit of each deck — and start building them as Aces appear.
Forty Thieves 规则
- 两副牌（104 张）：10 列各朝上放 4 张，其余 64 张为抽牌堆。
- 牌列只能按同花色点数降序叠放。
- 8 个基础堆按花色从 A 到 K 填满。
- 从抽牌堆一次翻 1 张，只能过一遍--不能重来。
- 只能移动列顶的单张牌（不支持整组移动）。
Win and loss conditions
You win when all 104 cards have been built onto the eight foundations and the tableau, stock, and waste are empty. You lose when the stock is exhausted, the top of the waste cannot be placed anywhere, and no legal move advances any foundation. Solitaire Royal's undo button lets you backtrack costly moves; you can also restart the deal or shuffle a new one. Deals are randomly shuffled and tuned to be solvable.
策略与技巧
- 同花色匹配是核心--放牌之前务必确认花色。
- 空列当作临时中转站，只在解决卡局时才用。
- 抽牌堆只有一次机会，留到关键时刻再用。
Forty Thieves is widely associated with Napoleon Bonaparte, who is reputed to have played it during his exile on Saint Helena (1815-1821) — the name's connection to the "Ali Baba and the Forty Thieves" tale dates from the same era's European fascination with Arabian Nights. The strict ruleset became a benchmark for difficulty in 19th-century patience anthologies, and by the 20th century had spawned a recognised family of relaxations (Josephine, Miss Milligan, Forty and Eight, Streets and Alleys, Lucas, Maria) that systematically soften one constraint at a time while preserving the core two-deck same-suit-only structure.
