Crescent Solitaire arranges sixteen small piles in a crescent around eight foundations, and asks you to build those foundations both up (ace to king) and down (king to ace) in suit. Only the top card of each crescent pile is available, but you can shift the whole crescent around — three times per game — to bring buried cards into play.
It is harder than Klondike and more deliberate. Every move opens or closes options in a pile you may need later, and the three shuffles are a resource you have to spend carefully rather than a rescue.
Build the eight foundations in suit — four upward from the ace, four downward from the king — using the top cards of the sixteen crescent piles. Cards can also be stacked on the crescent piles in sequence and suit to uncover what's beneath.
Three. Each rotates the crescent piles to bring different cards to the top, and they are usually the difference between a win and a stall.
Yes, generally. Both directions must be built at once, only the top card of each pile is available, and the shuffles are limited — so planning matters much more.