Picture Puzzle Solver

A picture changes recognition, not the sliding rules

A sliding picture puzzle cuts an image into square pieces, removes one piece to leave a blank, and asks you to restore the scene by sliding neighboring crops. The pieces can show a landscape, a portrait, a drawing, or a repeating pattern. Their artwork makes them easier or harder to recognize, but the legal moves are the same as on a numbered sliding board.

This page opens the sliding puzzle solver in its picture preset at 3x3. You can choose another square size up to 8x8. A free-placement jigsaw or a puzzle that rotates pieces is a different task: this tool keeps every crop upright and inside a one-blank grid. Identify the movement rule before trying to translate the game into a board here.

Start with the completed image

Use Photo to choose an image file, or open More → Picture puzzle for the additional image controls and an original sample. You can also drop or paste an image into the tool. The image is treated as a square and divided according to the selected board size. If the source game used a different crop, choose a matching completed image so landmarks fall in the same pieces.

The tool does not recognize a scrambled screenshot and reconstruct its pieces automatically. A screenshot can help you copy positions, but you still need to identify each crop manually. Load the finished picture, compare its pieces with the external puzzle, and use Edit start to exchange cells until the displayed scramble matches. A file you upload is processed locally and is not sent to a server. Loading an image URL, however, requires your browser to request that address.

Number crops by their finished locations

Keep Show numbers on photo enabled while entering and following a board. Piece one is the top-left crop of the completed image; subsequent labels continue across the first row and then down the remaining rows. The blank is represented by zero in a typed sequence. Those identities stay fixed when the pieces move.

Do not assign numbers in the current scrambled reading order. That would relabel the pieces and make a disordered picture look like an already completed numbered board. A 4x4 image needs labels 1 through 15 plus the blank, for example. If you prefer typing to repeated exchanges, use Edit start → Type numbers to enter those fixed piece identities row by row, including 0 or _ at the blank's position.

Handle similar pieces carefully

Large areas of sky, water, fabric, or flat color can make neighboring crops appear identical. Compare small details at their boundaries: a line crossing an edge, a change in shading, or the continuation of a shape. A piece with no distinctive feature still needs its correct identity because the reachability check is based on distinct positions, not on how similar two crops look.

Common starting patterns include a nearly complete outer frame with a mixed interior, two similar pieces apparently reversed, or a scene that looks correct while the blank sits in the wrong finish cell. Check the full target before accepting any of them. For another blank location or piece order, open More → Edit goal and record the intended finished arrangement.

Why a familiar-looking image may fail the check

A single exchange of two numbered pieces changes the board's parity. That can produce an arrangement that no legal slide sequence reaches, even though all visible subjects still look recognizable. The tool checks the entered start against the selected goal and reports a mismatch before solving. Picture puzzles follow the same odd-width and even-width reachability conditions as number puzzles.

When a warning appears, compare similar crops and the blank location before changing anything. Fix it exchanges a neighboring pair and makes a new reachable arrangement. It is a convenient correction for a practice board, but it changes the picture-piece positions you entered. If you are following an external game, identify any transcription error instead of assuming the repaired board reproduces its state.

Follow labels while watching the scene return

After Solve, the replay names a piece and shows its tile movement direction. Keeping labels visible helps distinguish similar crops while the scene is still broken. Pause, step through a corner maneuver, or select a later step to inspect how the image is being restored. The count measures single-tile slides; moving several aligned pieces with one gesture contributes several moves.

The algorithm depends on board size, not on the image's subject. A 3x3 picture uses a goal-based distance table. A 4x4 picture can use heuristic search and pattern databases. Larger pictures receive a fast constructed route that settles rows and columns, then finishes a small remaining region. Uploading a higher-resolution photo does not make the tile-order search more difficult.

Copy link shares the numbered arrangement and target, not the uploaded file. A recipient can restore the board positions without receiving your private picture. If you want someone to see the same artwork, provide the image separately and let them load it locally. The 4x4 page covers that common picture-board size, and the related size pages explain what changes when the grid contains many more crops.