Scorpion Solitaire

Scorpion Solitaire is a challenging variant similar to Spider but played with a single deck. Forty-nine cards are dealt into 7 columns of 7 cards each. The first three columns have 3 face-down cards topped by 4 face-up cards, while columns 4 through 7 are fully face-up. Three reserve cards are set aside. Like Yukon, you can move any face-up card along with all the cards on top of it. Build tableau columns in descending order of the same suit (King down to Ace). When a complete King-to-Ace same-suit sequence is formed, it stays in place. Empty columns can only be filled with Kings. When you're stuck, deal the 3 reserve cards face-up onto the first three columns. The game is won when all four suits are arranged in complete King-to-Ace sequences.

• Focus on uncovering face-down cards in the first three columns as your top priority.
• Build same-suit sequences whenever possible, even if it means making moves that seem counterintuitive.
• Save the reserve deal for when you're truly stuck — the three extra cards can open up new possibilities.
• Try to create empty columns by moving Kings and their piles, since only Kings can fill empty spaces.
• Work on completing one suit at a time rather than making scattered progress across all four.