Minesweeper

Objective

The board hides a fixed number of mines. Reveal every square that does not contain a mine to win. Reveal a mine and the game is over. Your very first click is always safe — mines are placed only after you open the first cell.

Reading the Numbers

When you reveal a safe cell it shows a number from 1 to 8 — the count of mines in the eight neighbouring cells. A blank cell touches no mines, so its neighbours open automatically in a cascade. Use the numbers to deduce which surrounding cells must be mines.

Controls

• Click / tap a covered cell to reveal it.
• Right-click (desktop) or long-press (mobile) to place or remove a flag.
• Flag Mode button — turn it on to flag with a normal tap, handy on touch screens.
• Click a revealed number whose flags already match it to auto-open its remaining neighbours (chording).
• N or New Game to reshuffle at the current difficulty.

Difficulty

• Beginner — 9×9 grid with 10 mines.
• Intermediate — 16×16 grid with 40 mines.
• Expert — 30×16 grid with 99 mines.

Timer & Best Times

• The timer starts on your first reveal and stops the moment you win or lose.
• Your fastest win for each difficulty is saved in your browser and shown as Best.
• Everything runs locally in your browser — no data ever leaves your device.

You can embed this util on your own site as a widget. Adding ?embed=1 to the URL loads a compact version with just the tool itself; no header, menu, or documentation. Paste this snippet into your HTML:

Copy snippet Adjust the height to taste.