Minesweeper Guide
Clear a grid without hitting a mine, with flags, first-click safety and difficulty levels.
Minesweeper hides mines on a grid. Open safe cells; a number tells you how many mines touch it in the eight surrounding positions. Open every non-mine cell to win; you do not have to mark every mine.
Make a safe first move
Leave Difficulty on Easy · 9 × 9 · 10 mines. Mines left starts at 10, and Time at 0s. Click any cell: the first click and its immediate neighbors are kept free of mines. An empty cell can reveal a group of safe neighbors; a numbered cell shows how many adjacent mines there are. Right-click a closed cell to add a flag; right-click again to remove it. Mines left is 10 minus your flags, not a verified count of unmarked mines. New game resets the round.
The timer starts on your first reveal, not on the first flag. A later click on a mine ends the round. If right-click is unavailable on your device, note that this interface provides no separate flag button—try a device with a context-menu gesture. The board is randomized each game; do not assume a marked cell is actually a mine.
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Related guide
For more background, read Browser Games and Practice Tools.
Questions you might have
- What does first-click safety mean?
- The mines are placed only after your first click, and never on that cell or its eight neighbours. Your opening move can therefore never end the game and will always clear a small area to work from.
- How do I flag a mine?
- Right-click a closed cell to flag it, and right-click again to remove the flag. Flagging is a note to yourself: it does not open the cell and it does not affect whether you win. The counter shows how many mines are still unaccounted for.
- What do the numbers mean?
- A number is how many of the eight surrounding cells contain a mine. The colour of the number changes with its value so a busy cell stands out at a glance.
- How do I win?
- Open every cell that is not a mine. You do not need to flag every mine, and you can finish with flags still on the board — the win is based on the safe cells you have cleared.
- Is the board solvable without guessing?
- Not always. Minesweeper can produce positions where logic alone leaves two equally likely options, and no amount of care will avoid a guess. The difficulty presets set the mine density, not a guarantee of a purely deductive board.