How this free Minesweeper solver finds the next move
Minesweeper looks simple until a row of partly opened squares creates several possible mine layouts. At that point, a good player does not need a giant board analyzer; they need a quick way to test the exact information already on screen. This Minesweeper solver is designed for that moment. Enter the numbers in the local region, leave unopened squares blank, and mark only flags that are already proved. The result distinguishes a guaranteed safe square from a confirmed mine, so you can make a move with a reason rather than an instinct.
Each revealed number becomes a constraint. A 1 touching one unknown square makes that square a mine. A 2 with two remaining unknown neighbors makes both mines. The solver repeats these direct deductions, then compares overlapping clue groups. That comparison is useful when a smaller set of cells sits inside a larger set: the difference between their mine counts can prove the remaining cells safe or mined. The approach mirrors ordinary Minesweeper logic while saving you from keeping several counts in your head.
Best input rule: copy a connected area around the uncertainty, not the entire board. A few extra opened numbers near its edge are usually more useful than a large field of blank squares.
Enter a board without guessing
Match the size only when it helps you orient yourself
The 9×9 preset suits many beginner boards, while 16×16 and Expert presets let you recreate a larger game. You can also set your own dimensions. Board size does not add hidden information; it simply gives you a familiar coordinate space. For a local solve, use a smaller rectangle if that is faster to transcribe.
Use clue mode for opened cells
Select an opened cell, then choose the displayed number from 0 to 8. A zero is valid when the game shows an empty opened square. On desktop, clicking the cell and pressing a number is often fastest. On mobile, the number pad avoids the small keyboard and makes it clear which cell is selected.
Flag only known mines
A flag is an assertion, not a possibility. If you flag a square because it “seems likely,” every nearby equation changes and the analysis may correctly report a conflict. Leave a suspected mine blank until the clues prove it. Right-click a square, or choose Flag a mine and tap it; tap again to remove the flag.
Read the answer from the Minesweeper helper
After you select Find safe moves, blue cells are safe to open and red cells are mines. The status line states how many of each conclusion were found. A red inferred mine is not just a recommendation: with the clues you entered, it must be a mine. A blue square is equally certain to be safe. When several moves are available, choose any one; opening one safe square may reveal a new clue and make the rest of the board easier.
Some authentic positions contain no forced move. When the local constraint set is small enough, this online Minesweeper solver enumerates the valid local layouts and presents a lowest-risk option with its local mine chance. That is explicitly different from a guaranteed move. Treat it as a transparent probability recommendation, not as hidden knowledge about the game’s unopened board. If you prefer pure logic, enter more surrounding clues and solve again.
Common input problems and quick fixes
“The flags and clue numbers conflict.” A flagged square may be wrong, a number may have been entered one cell away, or the copied area may be incomplete at a meaningful edge. Remove doubtful flags first, then compare the numbers around the reported region with the original board.
“No certain move yet.” This is not a failure. It means more than one mine assignment still fits the supplied clues. Add the opened numbers one ring farther out, particularly numbers that touch the unknown squares you care about. You do not need to type distant areas that have no connection to the uncertainty.
Nothing happens after a number is chosen. Select a cell before using the number pad. The thin blue focus outline shows the currently selected square. You can clear a mistaken clue with Clear cell, then enter the correct number.
Minesweeper strategy this tool supports
Use the solver as a checking partner, not as a replacement for learning patterns. Start by scanning for completed clues: when a number already touches its full mine count, every other covered neighbor is safe. Then look for a clue whose remaining mine count equals its remaining covered neighbors. Finally compare touching clue groups rather than reading them one by one. These habits transfer directly back to the game and make transcription quicker on the next difficult board.
For a timed game, pause only at decisions that would otherwise become guesses. For a relaxed game, use the helper to verify a pattern after you have made your own deduction. Because all calculations occur in your browser, you can use it without sending a screenshot or account data anywhere. The tool is also useful on a phone: keep the game open in one tab, copy the small visible area into this page, and return to open the confirmed safe cell.
For best results, keep the original board nearby and transcribe deliberately. One accurate extra clue is more valuable than several uncertain flags.
Frequently asked questions
Can this Minesweeper solver solve a custom board?
Yes. Set any board from 2×2 through 30×30, then enter the visible clues. For very large games, solving a connected local region is usually clearer and faster than copying every square.
Why is a flagged cell treated differently from a blank cell?
A blank cell is still unknown. A flag tells the solver to subtract one mine from each adjacent clue, so only flag cells you have proved from the original board.
Does the online Minesweeper helper store my puzzle?
No. It is browser-only: your board is used in the page while you work and is not uploaded to a service.