Spider Solitaire

The goal. Move all 104 cards into the eight discard piles by forming complete King-to-Ace runs in a single suit. Once a run completes at the bottom of any tableau column, the page auto-collects it to the next empty discard pile.

The deal. Ten tableau columns are dealt face-down with the bottom card of each face-up. The first four columns get six cards each; the last six get five cards each. The remaining 50 cards form the stock.

Single-card moves. Any face-up card may move onto any tableau column whose bottom card is exactly one rank higher (suit doesn't matter for a single-card move). Empty columns accept any card.

Multi-card moves. A run of cards may move as a unit only if it's a same-suit descending sequence (e.g. 7♠-6♠-5♠ can move together). A mixed-suit run can only move one card at a time.

Auto-collect. Whenever a complete King-down-to-Ace run forms in a single suit at the bottom of a column, those 13 cards move to the next empty discard pile and the column shortens by 13 cards.

Stock deal. Press the Stock button to deal one card face-up onto the bottom of each tableau column. Stock starts with five rounds remaining (50 cards total). You can't press Stock if any tableau column is empty — standard Spider rule.

Difficulty. 1-suit uses all spades (104 spade cards). 2-suit uses spades and hearts. 4-suit uses every suit. The number of suits drives the difficulty: more suits mean fewer same-suit run opportunities and a much harder game.

Drag, click, or double-click. Drag a card or run to a destination. Click a card then click a destination column. Double-click a card to auto-move it to the best legal destination (preferring the longest same-suit run that can move there).

Undo / Redo. Unlimited, with Cmd/Ctrl+Z and Cmd/Ctrl+Shift+Z.

Hint. Press Hint (or H) for a suggested move. Repeated presses cycle through alternatives.