All four suits, two of each. The toughest Spider level, and the one where patience and Undo earn their keep.

4-Suit Spider Solitaire: The Rules in Brief

Spider Solitaire with 4 suits plays by the same rules as the other levels, which are covered in full on our Spider Solitaire page. Ten columns are dealt, and the 50-card stock adds one card to each column, up to five times, as long as no column is empty. You may place any card on one exactly a rank higher, but a group can move only when it is a descending run in a single suit. Finished King-to-Ace runs of one suit leave the table automatically, and you win when all eight are complete: two in each suit.

Why 4 Suits Is So Much Harder

This is hard Spider Solitaire, the version for players who want a long, thoughtful game. The rules match the easier levels, but the deck does not. Every 8 on the table can take any of the deck's eight 7s. With 1 suit, all eight match its suit. With 2 suits, four do. With 4 suits, only two do.

That one change shows up everywhere:

Mixed builds are common. You will often have to place cards off suit just to keep playing, and every suit change splits a stack into pieces that have to move separately.
Columns stay buried longer. A stack made of several short same-suit pieces can only be moved a piece at a time, so the face-down cards under it wait.
Runs are slow to finish. Each one needs all 13 cards of a suit in order, and with only two copies of each card, the one you need may be buried or still in the stock.

4-Suit Spider Strategy

Be patient with the stock. It is tempting to deal as soon as the layout looks awkward. There are only five deals, though, and each one buries every column. Deal only after you have turned over everything you can, made every possible same-suit repair, and checked Hint for anything you missed.
Put empty columns ahead of almost everything. In a 4-suit game, empty columns are your main way to move mixed stacks and sort suits. With one, you can move a 10 of clubs carrying the 9 and 8 of diamonds: put the diamonds in the empty column, move the 10, then put the diamonds back on it. Two empty columns let you move longer stacks. A column with one or two face-down cards left is usually the best target, even if clearing it means an off-suit build elsewhere.
Spend an empty column carefully. Once you have one, keep it open for rearranging and fill it only when you must, such as right before a deal.
Build in suit, even when it is slower. If a 6 of clubs could go on the 7 of clubs or the 7 of diamonds, choose the club. Every suit change you avoid now is one you will not have to untangle later, and with four suits, untangling is expensive.
Remember there are two of every card. If the 8 of clubs you need is buried deep in one column, the other 8 of clubs may be closer to the surface, or still to come from the stock.
Use Undo to explore. Undo is unlimited, so you can try a line of play, see where it leads, and back up if it goes nowhere. That makes it a planning tool as much as a way to fix slips. Some players also use it to see which card a move turns over before committing; others save Undo for genuine mistakes.
Use Restart to learn a deal. Restart replays the same deal from the beginning. If a game slips away, knowing where the key cards are hidden gives your second attempt a real head start.

Realistic Expectations

Four-suit Spider is a game you will lose often, especially at first. Some deals may not be winnable at all, and even good play cannot always make up for an awkward stock. Count a game where you finish two or three runs as progress, and enjoy a full win when it comes.

Your Stats are kept separately for 1, 2 and 4 suits, so a low 4-suit win rate will not drag down your other records. If 4 suits feels like too much for now, 2-suit Spider Solitaire is a good middle ground, and FreeCell offers a different kind of deep game, with every card face up from the start.