You're deep into a game of Klondike Solitaire. You've been playing for 10 minutes, cycling through the stock pile, and nothing seems to work. You start wondering: is this game even winnable, or am I wasting my time?
It's one of the most common questions solitaire players ask — and the answer might surprise you. A significant percentage of Klondike Solitaire deals are mathematically impossible to win, regardless of how well you play. Here's everything you need to know about solitaire winnability, and how to check whether your specific game has a solution.
Play Solitaire with Winnable CheckerThis is the most important thing to understand about Klondike Solitaire: the game is not always solvable. When you shuffle a standard 52-card deck and deal it into the Klondike layout, the random arrangement of cards can create situations where no sequence of legal moves leads to victory.
This isn't a flaw in the game — it's a fundamental aspect of what makes Klondike Solitaire interesting. Unlike FreeCell (where 99%+ of deals are winnable), Klondike's significant percentage of unwinnable deals means that recognizing when to give up and deal again is itself a skill.
The question is: how do you tell the difference between a game you can't win and a game you haven't figured out yet?
Researchers and computer scientists have spent decades studying Klondike solvability. While exact numbers are hard to pin down (the search space is enormous), extensive simulations give us reliable estimates:
Winnable with perfect play
~21% of deals are impossible
Winnable with perfect play
~70% of deals are impossible
Important distinction: these are theoretical win rates assuming perfect play — meaning the optimal move is made at every decision point. Human players win far fewer games because finding the optimal move sequence among thousands of possibilities is extremely challenging. Typical human win rates are:
The gap between the theoretical maximum and actual human performance shows that even when a game is winnable, finding the winning path is genuinely difficult. A solver can tell you the game is solvable, but you still need skill to actually win it.
Unwinnable Klondike deals are caused by the random shuffle creating configurations where critical cards are permanently inaccessible. Here are the most common reasons a deal can't be won:
Kings are the only cards that can fill empty tableau columns. If all four Kings are buried deep in the tableau with large numbers of face-down cards above them, it may be impossible to create the empty columns needed to reorganize the board. Without empty columns for temporary card storage, many moves become impossible.
Sometimes low-ranked cards (Aces, 2s, 3s) needed for the foundations are trapped under higher-ranked cards in the stock pile or tableau. If the only way to access these cards requires moving other cards that themselves have nowhere to go, the game reaches a deadlock.
The most insidious unwinnable pattern is a circular dependency: card A can only be moved if card B is moved first, but card B can only be moved if card C is moved first, and card C can only be moved if card A is moved first. This creates an impossible loop that no sequence of moves can break.
In Draw 3 mode, only every third card in the stock pile is directly accessible during a given pass. If critical cards fall in positions that are never directly accessible (always covered by two other cards), they can become permanently trapped. This is the primary reason Draw 3 has a much lower winnability rate than Draw 1.
While only a solver can definitively determine winnability, these warning signs suggest a game may be unwinnable:
However, these signs are not definitive proof. Some games that look hopeless can still be won with creative move sequences. The only way to know for certain is to use a solver.
Yes. This is a crucial point that many players don't realize: even if a deal starts with a winning path, your moves can close that path off and make the game unsolvable from your current position.
For example:
This is one of the most valuable aspects of TrySolitaire's built-in solver: it can detect when a move has made your game unsolvable and offer to undo back to the last winnable position. This "Undo to Winnable" feature lets you try a different approach without starting over.
TrySolitaire includes a free built-in solver that checks your game's solvability in real time. Here's how to use it:
Look at the solver status icon in the game toolbar. It automatically updates as you play:
At any point during your game, click the solver icon to trigger a fresh analysis. The solver evaluates up to 10 million move combinations to determine whether a winning path exists from your exact current position — accounting for every move you've made.
The solver also runs automatically in the background. When you start a new game, it immediately begins analyzing the deal. If at any point it detects that your game has become unsolvable (typically after a move that closed off the last winning path), a recovery panel appears offering to help.
If you want to guarantee that every game you play is solvable, use the "Deal Winnable" feature:
This is especially valuable for:
A winnable deal means a solution exists — it doesn't mean the solution is obvious. You still need strategy, planning, and skill to find the winning move sequence. Many winnable deals have only one or two viable paths among thousands of possible move sequences. The solver guarantees the game can be won; winning it is still up to you.
The draw mode you choose has a massive impact on how many games are winnable:
| Aspect | Draw 1 (Turn 1) | Draw 3 (Turn 3) |
|---|---|---|
| Deals Winnable | ~79% | ~30% |
| Deals Unwinnable | ~21% | ~70% |
| Human Win Rate (Expert) | 35-50% | 8-15% |
| Card Accessibility | Every card individually accessible | Only every 3rd card directly accessible |
| Solver Value | High (saves 21% wasted time) | Critical (saves 70% wasted time) |
| Deal Winnable Impact | Moderate improvement | Dramatic improvement |
The dramatic difference in winnability between Draw 1 and Draw 3 is caused by card accessibility. In Draw 1, you can reach every card in the stock pile one at a time. In Draw 3, you draw three cards but can only play the top one. The other two become temporarily inaccessible until you cycle through the entire stock and return to their position. This creates many more dead-end situations.
If you're frequently frustrated by unwinnable games, consider switching from Draw 3 to Draw 1, or use the "Deal Winnable" feature to guarantee solvable games in either mode.
No. Approximately 21% of Klondike Draw 1 deals and 70% of Draw 3 deals are mathematically impossible to win. The random card shuffle creates configurations where critical cards are permanently blocked, making it impossible to complete all four foundations regardless of how perfectly you play.
Use TrySolitaire's built-in solver. The solver icon in the toolbar shows a green checkmark if your game is winnable or a red X if it's unsolvable. Click the icon at any time to check your current position. The solver analyzes up to 10 million move combinations and typically returns a result within seconds.
Yes. Making wrong moves can close off the winning path and leave you in an unsolvable position. This is why TrySolitaire's "Undo to Winnable" feature is so valuable — when the solver detects you've reached an unsolvable state, it can automatically rewind to the last position where a winning path existed.
In Draw 3 mode, you draw three cards from the stock but can only play the top one. This means two-thirds of stock cards are not directly accessible on any given pass. Critical cards often get trapped between unusable cards, creating permanent blockages. This reduces winnability from ~79% (Draw 1) to just ~30% (Draw 3).
Use the "Deal Winnable" option in TrySolitaire's new game menu. The solver verifies that the deal has at least one winning path before it's dealt to you. This works for both Draw 1 and Draw 3 modes, guaranteeing every game you start is solvable.
No. The solver only tells you whether a winning path exists — it doesn't show you the moves. This preserves the challenge and satisfaction of finding the solution yourself. You still need strategy and skill to win.
Yes. The solver is completely free with no limitations, no ads, and no account required. It runs entirely in your browser — your game data never leaves your device. All solver features including solvability checking, Deal Winnable, and Undo to Winnable are included at no cost.
It varies dramatically by variant. FreeCell has 99%+ winnability, making almost every game solvable. Spider Solitaire (1-suit) is about 90% winnable. Pyramid is roughly 50%. Each variant has its own solvability profile based on its rules and mechanics. Currently, TrySolitaire's solver is available for Klondike Solitaire.
Play Klondike Solitaire with a built-in solver — never waste time on impossible games again.
Play Solitaire with Solver✓ Built-in solver | ✓ Deal winnable games | ✓ Undo to winnable | ✓ 100% free