What is card game Spider Solitaire?

Spider Solitaire is card solitaire game played with two decks of cards.

The Object

Remove all the cards from the table in the fewest number of moves.

The table

Spider Solitaire is played with two decks of cards. Depending on the difficulty level, the decks consist of either one, two, or four different suits.

The cards are arranged in ten columns. The top card in each column is face up, the rest are face down. The remaining cards are piled in the lower-right corner of the table.

Rules

To win, you must remove all the cards from the table by building columns organized in descending order, from king to ace. At intermediate and advanced levels, the cards must also match suit.

When you succeed in building a sequentially-ordered column, it flies off the table.

If you run out of moves, click the pile at the bottom of the table for a new row of cards.

You aren't limited to moving just one card at a time. If a run of cards are all in the same suit, and arranged in numeric order, you can drag them around as if they were a single card.

Scoring

You start with 500 points. From this, Windows subtracts the number of moves it takes to finish a game. It then increases this subtotal by 100 times the number of runs removed from the table.