Direct Rule
Mixed Suits Can Stack, But They Do Not Move Together
Spider Solitaire lets you place a card onto a card one rank higher regardless of suit. The restriction appears when you try to move more than one card at once.
- A single 7 can go on any available 8.
- A 7-6-5 stack can move together only if all three cards share one suit.
- If one card breaks the suit, the group is no longer movable as a unit.
Example
Same-Suit Runs Stay Flexible
A clean 9 of Spades, 8 of Spades, 7 of Spades run can move together onto a 10. A mixed 9 of Spades, 8 of Hearts, 7 of Spades run is legal to build, but it locks the lower cards until you separate them.
- Same suit: 9S-8S-7S can move as a group.
- Mixed suit: 9S-8H-7S must be untangled.
- Completed King-to-Ace runs must also be same-suit to clear.
Strategy
Mix Suits Only When the Move Buys Something
Mixed suits are not always wrong. They are a tradeoff. Make the trade when it reveals hidden information, opens a column, or prevents a dead board.
- Mix to reveal a face-down card.
- Mix to create an empty column you can use immediately.
- Avoid casual mixed stacks that do not improve the board.