Minesweeper
Reveal a nine-by-nine board containing ten mines. Use neighboring counts and flags, with a safe first reveal and a touch-friendly flag mode.
By Calcr · Updated
How to play Minesweeper
Reveal cells on a nine-by-nine board containing ten mines. A number tells you how many mines occupy the surrounding cells, including diagonals. An interior cell has up to eight neighbors.
Use a right-click to flag a suspected mine. On touch devices, switch to flag mode before selecting the cell. Switch back to reveal mode when you want to uncover cells again.
Read the clues
If a revealed 1 has exactly one unopened neighbor, that neighbor must contain a mine. If a revealed 2 already has two correctly identified mine neighbors, its other unopened neighbors are safe. A flag is your own hypothesis; placing it does not verify the cell.
For example, two adjacent numbered cells can share the same hidden neighbors. Compare both clues rather than treating each number as a separate set of mines. This helps avoid counting one hidden mine twice.
First move and win condition
The first revealed cell and its immediate neighbors are safe. This does not promise a board that can always be solved without guessing. Reveal every non-mine cell to win. Revealing a mine ends the round; flags alone do not complete it.
FAQ
Do diagonals count?
Yes. The eight surrounding positions count, reduced at edges and corners.
Is a flag guaranteed to mark a mine?
No. It records your deduction and can be wrong.
Which cells are safe on the first reveal?
The selected first cell and its immediate neighbors contain no mines. Beyond that opening, use the revealed clues rather than assuming further cells are safe.
Records are local to your browser, without a public leaderboard. The launch version does not show game advertisements or require an account.