How to play Scorpion solitaire
Scorpion mixes Spider's goal with Yukon's freedom: build four king-to-ace runs in suit, moving any face-up card along with everything on top of it.
Setting up
One deck. Seven columns of seven cards. In the first four columns the bottom three cards are face down; everything else is face up. The last three cards are a reserve.
How to play
A card can go on the next higher card of the same suit only: the 9 of hearts on the 10 of hearts. Nothing goes on an ace.
You can move any face-up card, with all the cards on top of it as a group, whether they're in order or not.
An empty column takes only a king (with whatever is on it).
When you're stuck, tap the reserve to deal its three cards onto the first three columns, one each.
Winning
Build four complete runs, king down to ace, each in one suit. Finished runs are taken off automatically.
Tips
The face-down cards in the first four columns are the whole game: free them early. Kings are awkward because they can only move to empty columns, so don't bury them under long jumbled piles.
Questions
Is Scorpion hard?
Yes. Many deals can't be won. Checking a Scorpion deal takes the solver too long, so deals here are marked "not checked".