Goal of the game
Move all 104 cards (two complete decks) onto the eight foundations by suit. Four foundations build up from Ace to King; four foundations build down from King to Ace. The game is won when the up-built and down-built foundations of the same suit meet in the middle — typically with a 7 or 8 as the final card placed.
Setup
Shuffle two standard 52-card decks together (104 cards). Place one Ace and one King of each suit as the eight foundation piles in the centre — four Aces below, four Kings above (or vice versa, layout varies). Deal the remaining 96 cards into 16 reserve piles of 6 cards each, arranged in a crescent (half-moon) around the foundations. Only the top card of each reserve pile is in play.
Crescent 规则
- 两副牌（104 张）：16 组各 6 张呈新月形，中央 8 个基础堆。
- 4 个以 A 为基础的堆从 A 到 K，4 个以 K 为基础的堆从 K 到 A。
- 只能移动每组最顶端的牌。
- 同组内可将同花色顺序相邻的牌叠放。
- 在限定次数内（通常 3 次）可以重新排列各组。
Win and loss conditions
You win when both halves of every suit's foundations have built towards each other and exhausted all cards — typically meeting at the 7 and 8 of each suit. You lose when no legal moves remain and all redeals have been used. The Solitaire Royal undo button lets you rewind 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
- 同时监控两个方向的基础堆，保持均衡推进。
- 重新排列机会只留给最卡的情况使用。
- 先分析每组中可以解锁的牌，再设定优先顺序。
Crescent's distinctive half-moon layout dates to late-19th-century European patience books, where its decorative geometry was as much the point as the gameplay. The bidirectional foundations and three-redeal mechanic were standardised in mid-20th-century English solitaire collections, and the game has remained a fan favourite among two-deck enthusiasts for the unusual rhythm — building towards the middle rather than racing from Ace to King in one direction.
