Sliding Puzzle Solver parity check
The solver counts inversions and combines them with the blank row rule for even-width boards. If parity fails, the puzzle cannot be solved by legal sliding moves.
Free Online Sliding Puzzle Solver
Solve number sliding puzzles from any tile arrangement.
This Sliding Puzzle Solver combines 8 Puzzle Solver, 15 Puzzle Solver, and Number Sliding Puzzle Solver workflows in one page. Enter the current numbered tile arrangement, check whether it is solvable, then inspect move directions, each board state, total moves, and the current blank position.
Sliding Puzzle Solver — enter an 8-puzzle, 15-puzzle, or number grid
Choose the board size, enter the current tile order with 0 or _ for the blank space, and the Sliding Puzzle Solver will validate parity, report solvability, and search for a shortest or heuristic path in your browser.
Sliding Puzzle Solver input
Higher values can find harder 15-puzzle paths, but the browser may stop early at the node limit.
Use spaces, commas, or line breaks. Enter every number from 0 to N²-1 once; 0, blank, or _ means the empty space.
Scope boundary: this Sliding Puzzle Solver does not recognize image puzzles, upload photos, read camera input, or identify real physical puzzle pictures. Enter the numbered tile arrangement manually.
Performance boundary: complex 15-puzzle and 5×5 states can be expensive. The Sliding Puzzle Solver uses Manhattan-distance heuristic search, maximum moves, and a node cap so the browser does not lock up.
Sliding Puzzle Solver results
Solvable
Not checked
Total moves
0
Enter a tile arrangement to see solvability, blank position, move directions, board states, total moves, and input errors.
Blank position
Not checked
Path type
Not checked
Move directions
Board states
Sliding Puzzle Solver workflow for 8-puzzle and 15-puzzle boards
One Sliding Puzzle Solver page covers 8 Puzzle Solver, 15 Puzzle Solver, and Number Sliding Puzzle Solver searches without splitting them into separate tools.
Sliding Puzzle Solver tile input
Select 3×3, 4×4, or another supported square size, then type the current numbered arrangement with 0 or _ for the empty space.
Sliding Puzzle Solver move path
The result shows whether the puzzle is solvable, the total move count, blank-space directions, and every board state from start to goal.
Sliding Puzzle Solver search limits
Hard 15-puzzle states can be slow, so the solver uses Manhattan-distance heuristic search plus depth and node limits to keep the browser responsive.
How the Sliding Puzzle Solver works
The Sliding Puzzle Solver checks math first, then searches moves only when the entered number sliding puzzle can reach the standard goal state.
Sliding Puzzle Solver path search
For 3×3 puzzles the tool uses A* with Manhattan distance to return a shortest path. Larger boards use a weighted heuristic mode with caps for responsiveness.
Sliding Puzzle Solver avoids image recognition
The page solves numeric tile orders only. It does not upload pictures, identify photos, segment jigsaw images, or read a real puzzle from a camera.
Sliding Puzzle Solver input guide
Use these tips to format an 8-puzzle, 15-puzzle, or Number Sliding Puzzle Solver board correctly before searching.
01
Choose the Sliding Puzzle Solver board size
Pick the square size that matches the puzzle: 3×3 for an 8-puzzle, 4×4 for a 15-puzzle, or another supported number sliding puzzle size.
- Use the standard goal order 1, 2, 3 ... with the blank last
- The solver expects one blank space, written as 0 or _
02
Enter the Sliding Puzzle Solver arrangement
Type the board exactly as it appears now, row by row. Spaces, commas, and line breaks are accepted, so both compact and grid-style input work.
- Every number must appear once
- The current blank position is reported in row and column form
03
Review the Sliding Puzzle Solver path
If the puzzle is solvable, read the blank-space move directions and inspect every board state. If search hits a limit, try a closer state or raise the maximum moves carefully.
For 15-puzzle positions that are far from solved, solvability can be proven quickly even when finding a complete path would be too expensive for the browser.
Sliding Puzzle Solver FAQ
Common questions about Sliding Puzzle Solver input, 8 Puzzle Solver and 15 Puzzle Solver support, solvability, limits, and image-recognition boundaries.
Does this Sliding Puzzle Solver include both 8 Puzzle Solver and 15 Puzzle Solver?
Yes. This single Sliding Puzzle Solver page handles 3×3 8-puzzle boards, 4×4 15-puzzle boards, and other supported square number sliding puzzles. They are intentionally combined instead of split into separate pages.
How does the Sliding Puzzle Solver decide if a puzzle is solvable?
The Sliding Puzzle Solver checks inversion parity. Odd-width boards are solvable when the inversion count is even. Even-width boards also use the blank row counted from the bottom.
Are Sliding Puzzle Solver moves shortest?
For 3×3 boards, the Sliding Puzzle Solver uses A* with Manhattan distance and reports a shortest path when found. For larger boards, the page may use weighted heuristic search, so the path can be near-shortest rather than mathematically optimal.
Why can a 15-puzzle state be slow in the Sliding Puzzle Solver?
Some 15-puzzle positions need deep searches and large state spaces. The Sliding Puzzle Solver sets maximum move and node limits so the browser remains responsive instead of freezing.
Can the Sliding Puzzle Solver read a photo of my puzzle?
No. This Sliding Puzzle Solver does not upload images, identify tiles in photos, read camera input, or solve picture jigsaws. Enter the tile numbers manually.
What does the blank direction mean in the Sliding Puzzle Solver?
Move directions describe the blank space: Up means the empty square moves one row up, Down means it moves one row down, and so on. The board-state timeline shows the result after each move.
Are my Sliding Puzzle Solver boards uploaded?
No. Parsing, solvability checks, heuristic search, move directions, and board-state rendering run in front-end browser JavaScript after the page loads.
Try another free tool after the Sliding Puzzle Solver
SolverBox keeps Sliding Puzzle Solver focused on numbered sliding tiles, while Sudoku, Kakuro, KenKen, and other tools handle different puzzle rules.
After using this Sliding Puzzle Solver, browse all free puzzle solvers for more number, logic, word, and game helpers.
No account required — enter a number sliding puzzle and solve it in your browser.