Puzzle Slide Solver

Puzzle Slide Solver — Type in your board or scan it, get the fewest moves

Stuck on a sliding puzzle? Puzzle Slide Solver takes any scrambled sliding tile puzzle — the classic 15 puzzle and every size around it, from 3×3 right up to 8×8 — and shows you exactly how to finish it. Type in the board you're stuck on, or scan it from a photo, and the app works out the solution, then walks you through it one move at a time so you never lose your place on your real puzzle.

It's a tool, not a game: no timers, no scores, no pressure. Just the way out of the board in front of you.

Key features:

- Type in any board you're stuck on, from 3×3 up to 8×8

- Or scan the board from a photo — number tiles or a picture puzzle, no typing

- Solve picture puzzles too, not only numbers

- The fewest possible moves on 3×3 and 4×4, and a guaranteed solution on 5×5 up to 8×8

- Step-by-step guidance with the exact tile to slide ringed on screen

- Show one move at a time, or three, and preview the board after every step

- Catches impossible boards, so a typo never sends you chasing a solution that can't exist

- No ads, no accounts, and no in-app purchases

How it works:

- Two ways in: tap the numbers off your own puzzle into the grid, or scan the board from a photo — number tiles or a picture, no typing. Mark the empty gap and hit Solve.

- Then follow along on your real puzzle: the app rings the exact tile to slide next and previews the board after each step, while a running counter holds your place — so you can put the phone down and pick right back up. Show one move at a time, or three.

Board sizes:

- 3×3 (8 puzzle) and 4×4 (15 puzzle): the app searches for the mathematically shortest solution, so you copy as few moves as possible.

- 5×5, 6×6, 7×7 and 8×8: the shortest-possible search is out of reach for any tool here, so the app returns a guaranteed solution instead — always correct, just not the theoretical minimum.

Why Puzzle Slide Solver

Most solvers spit out a wall of moves you have to decode. This one keeps your place for you: it rings the next tile, previews the result, and lets you step back if your hand slipped. That single job — never losing your place while you copy the moves — is the whole point.

Tips

- Double-check the empty gap: the gap's position changes which solutions are possible.

- Set "moves at a time" to 1 if you're new to sliding puzzles, or 3 once you're confident.

- If the board is flagged as unsolvable, re-check for a repeated or swapped number.

Privacy

No sign-up and no ads. Typing and solving happen on your device; scanning a photo sends that image so the app can read the tiles.