How to Improve Your Klondike Solitaire Strategy with a Solver

1. Focus on revealing face-down tableau cards

At the start of Klondike, most tableau cards are hidden. Moving a visible descending sequence can reveal a new card beneath it, turning an unknown part of the board into a new opportunity.

When reviewing a winning path, pay special attention to moves that expose a face-down card. For example, moving a black 8 onto a red 9 might reveal a red 7 on the original column. That new red 7 could enable a completely different chain of moves.

A good question to ask before each move is: What becomes available afterward? A move that looks less dramatic may be more valuable because it unlocks information or frees space.

Revealing a card is often useful, but not every move that reveals something is automatically best. The color, rank, and availability of the supporting columns still matter.

2. Learn why an empty tableau column matters

An empty tableau column can only receive a King or a valid sequence headed by a King. It is not simply an empty spot for any convenient card.

Watch the solver when it frees a column. Does it immediately move a King there? Or does it wait until moving a particular King will uncover a more valuable hidden card?

A useful exercise is to pause a solution immediately before a column becomes empty. Predict which King the route will place there and what that choice makes possible.

Common mistake: Filling a free column with the first available King without considering whether it creates a helpful continuation.

3. Treat foundation moves as decisions, not automatic progress

Sending an Ace or low card to the foundation often helps. But higher cards can sometimes be needed in the tableau to support alternating-color sequences.

For example, a red 6 may be playable to its foundation yet still be useful as a temporary destination for a black 5. Advancing the foundation immediately is legal, but it may limit later tableau moves.

Some valid Klondike solutions even move a card back from the foundation to the tableau. That is not a contradiction: a winning route is about reaching the final result, not about increasing the foundation count at every single step.

When studying a solution, look for foundation moves that are delayed or reversed. Ask which tableau transfer they enable. This is more instructive than assuming all foundation moves are equally safe.

4. Understand stock and waste timing in Draw 1

In Draw 1, the stock reveals one card per draw. Only the top waste card is available for play. If a useful card is underneath another waste card, you may need to play away the top card or recycle the waste before you can access it.

When the solver draws several times without moving a tableau card, it may be positioning the waste for a later action. Follow the sequence rather than evaluating each draw in isolation.

To practice, pause before a stock draw. Predict whether the next useful action will come from the waste, the tableau, or the foundation. Then advance one step and compare.

Remember that recycling rules vary between Solitaire implementations. Uletime's Klondike allows repeated stock cycles, but the order of cards is not arbitrarily reshuffled on each pass.

5. Pay even closer attention to Draw 3 sequencing

Draw 3 is not simply Draw 1 with three cards revealed at once. It changes the order in which waste cards can be played. A card visible behind the top waste card is not directly playable until the cards above it have been removed.

Playing a waste card changes the waste sequence and may make other cards accessible on subsequent passes. Consequently, a winning Draw 3 route may contain several deliberate stock cycles that initially appear to accomplish very little.

Try this exercise:

1. Start a Draw 3 Winnable deal in the solver.
2. Select Solve, then advance with Next Step.
3. When a waste card is played, pause and look at what becomes accessible.
4. After a recycle, identify which card is now reachable that was not reachable before.

This builds an understanding of sequencing rather than treating the stock as a random stream of cards.

6. Compare your move with a winning continuation

One of the best ways to learn is to play a few moves yourself before pressing Solve.

If the solver finds a route, study its first several actions. Did it prioritize exposing cards? Did it postpone an available foundation move? Did it move a complete tableau sequence instead of just its top card?

The point is not to assume that the first move in one solver route is the only correct move. A Klondike position can have multiple winning continuations, and the solver is not necessarily finding the shortest or most intuitive one.

Also remember that the solver uses the complete underlying Uletime board, including hidden card identities. A move that makes sense with perfect information may not be an obvious decision for a player who cannot see those cards. Use solutions as teaching examples, not as proof that every move should have been obvious.

7. Re-solve after a meaningful change

A solution belongs to the board state from which it was calculated. If you play a different move, restart, or undo, the old sequence may no longer fit.

Use Solve again after experimenting. A new successful path can show that your alternative choice still allows a win. An Unknown result, however, only means the solver did not find a path within its search limit—not that your move definitely ruined the deal.

If you want a guaranteed winnable starting layout for practice, choose Winnable when creating a new game. That guarantee applies to the original position, not automatically to every later position.

A 10-minute solver practice routine

You do not need to replay a full solution every time. Try this short routine:

1. Two minutes: Start a Winnable Draw 1 deal and make a few moves without assistance.
2. Two minutes: Select Solve. If a route is found, study the next five actions with Next Step.
3. Three minutes: Focus on one decision—revealing a hidden card, opening a King column, or delaying a foundation move.
4. Three minutes: Try a new Draw 3 position. Observe how stock and waste order changes the route.

Over time, look for repeated reasons behind good moves rather than memorizing card positions from one deal.