Four suit spider solitaire strategy is how you beat the hardest level of the game. This level uses two decks. Every suit appears twice. You must build eight full King to Ace sequences, each in a single suit. The game deals 54 cards into ten piles: four piles of six and six of five. The stock holds 50 cards. It delivers five rows of ten, one card onto every pile. In most versions, including classic Windows, you cannot deal from the stock while any pile is empty. An empty pile accepts any card or same suit run. This playbook covers the tactics: managing off suit builds, when to break a mixed run, keeping piles suit pure, and pacing the five stock deals.

Keep Columns Suit Pure

In four suit Spider, a pile that contains only cards of one suit gives you the most flexibility. You can move any part of that pile as a unit. Only same suit runs can be moved as a unit. A suit pure pile also makes it easier to spot and finish a full King to Ace sequence.

To build a suit pure pile, avoid placing a card of a different suit onto a pile that already has a same suit run. If the bottom card in a pile is a 7 of Spades, do not put a 6 of Hearts on top if you can put it elsewhere. Use an empty pile or a pile that already has mixed suits to hold off suit cards.

When to Accept Mixed Suits

Sometimes you cannot avoid mixing suits. When the stock deal adds cards, you may have to place an off suit card temporarily. Accept a mixed pile only if you plan to clear it soon. A pile with two or three suits is harder to move and becomes a dead end. Keep the number of mixed piles low. Aim for no more than two at a time.

Manage Off Suit Builds

Off suit builds are piles where you stack cards of different suits on top of each other. These builds hold cards you cannot place on a same suit run. They block progress if not managed well.

Here are the rules:

  • Place off suit cards only on piles that already have mixed suits, or on empty piles if no other option exists.
  • When you have an off suit build, look for a way to move the top card onto a same suit run. If you have a 5 of Diamonds on top of a 6 of Clubs, and a 4 of Diamonds elsewhere, move the 5 of Diamonds onto the 6 of Diamonds if that 6 is available.
  • If an off suit build grows too tall, more than three or four cards, break it. Move the top card to an empty pile or onto a same suit run.

Using Empty Piles for Off Suit Cards

An empty pile can take any card or same suit run. Use empty piles as temporary holding spots for off suit cards. This keeps your main piles suit pure. Once a same suit run can accept the off suit card, move it from the empty pile to that run.

When to Break a Mixed Run

A mixed run is a sequence of cards that are in order but not all the same suit. 8 of Clubs, 7 of Hearts, 6 of Clubs is a mixed run. You cannot move the whole run as a unit. Only same suit runs can be moved as a unit. This makes mixed runs harder to use.

Break a mixed run when you see an opportunity to create a same suit run. If you have 8 of Clubs, 7 of Hearts, 6 of Clubs, and a 7 of Clubs somewhere else, move the 6 of Clubs onto the 7 of Clubs to start a Clubs run. Then move the 7 of Hearts to another pile or onto an 8 of Hearts if available.

Another time to break a mixed run is when it blocks an empty pile. If a mixed run sits on top of a pile and you need that pile empty to deal from the stock, you must break the run and move the cards elsewhere.

Pace the Five Stock Deals

The stock holds 50 cards, dealt in five rows of ten. One card lands on every pile. You cannot deal from the stock while any pile is empty. This rule forces you to keep all ten piles occupied before you deal.

To pace the stock deals, follow these steps:

  1. Before each deal, make sure every pile has at least one card. If a pile is empty, fill it with any card or same suit run before dealing.
  2. After dealing, scan the new cards. Look for cards that can be placed immediately onto same suit runs. Move them right away to reduce clutter.
  3. Aim to finish at least one King to Ace sequence before the third deal. This frees up space and gives you more empty piles to work with.
  4. Do not deal the stock if you have many mixed piles or tall off suit builds. First, clear as many piles as possible to suit pure or near suit pure states.
  5. If you have no empty piles and the board is full, you may need to break a mixed run to create an empty pile. This is better than dealing into a hopeless board.

Pacing the deals means you control when you add new cards. Do not deal just because you have no moves. Deal only when you have a plan for the new cards.

Use Empty Columns Strategically

Empty piles are valuable. They accept any card or same suit run. Use them to move cards that are stuck in mixed runs or off suit builds. If you have a 9 of Hearts on top of a 10 of Clubs, and an 8 of Hearts elsewhere, move the 9 of Hearts to an empty pile. Then place the 8 of Hearts onto the 9 of Hearts to start a Hearts run.

Empty piles also help you rearrange the board. You can move an entire same suit run from one pile to another if you have an empty pile to hold part of the run temporarily. This is useful when you need to combine runs of the same suit.

Keep at least one empty pile available. Do not fill every empty pile immediately. Wait until you have a clear use for it.

Focus on Completing Sequences Early

You need eight full King to Ace sequences to win. Each sequence takes up one pile when finished. The sooner you remove a sequence, the more space you have. Aim to finish the first sequence within the first two stock deals.

To focus on sequences, look for suits that appear often. Every suit appears twice in the deck. If you see many cards of one suit, build a same suit run for that suit. Avoid breaking a long same suit run unless you have a good reason.

When a King to Ace sequence is nearly done, prioritize moving cards that finish it. Use empty piles to hold cards that are in the way. Once you remove a finished sequence, you get an empty pile and move one step closer to winning.