Minegrid
Classic mine-sweeping game — free, no ads, works offline.
How It Works
How to play: Left-click to reveal a cell. Right-click to place or remove a flag on a suspected mine. Your first click is always safe — mines are placed after you click.
Chord-click: Left-click a revealed number cell when you've flagged exactly that many neighboring mines to auto-reveal the remaining neighbors. Use this to clear areas quickly once you're confident in your flags.
Strategies: The "1-1 pattern" occurs when two adjacent numbered cells share the same unrevealed neighbors — the difference in their counts reveals which cells are safe. Corners and edges reduce the number of possible mine positions, making them easier to deduce.
This style of mine-sweeping game was popularized by Microsoft Windows in 1990. The game is NP-complete in the general case — determining whether a valid mine placement exists for a given board state is as hard as any problem in NP.
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Frequently Asked Questions
How do I play Minesweeper?
Left-click to reveal a cell. Right-click to flag a suspected mine. Numbers show how many mines touch that cell (including diagonals). Use the numbers to deduce which unrevealed cells are safe and which are mines. Your first click is always safe.
What is chord-clicking in Minesweeper?
Chord-clicking is left-clicking a numbered cell when you've already flagged exactly that many neighboring cells as mines. The game auto-reveals all remaining unflagged neighbors — a huge time-saver once you're confident in your flags.
Is Minesweeper a game of luck or skill?
Mostly skill, sometimes luck. Most board positions can be solved by logical deduction. However, some configurations require a 50/50 guess with no additional information — that's unavoidable in the standard game. Expert players minimize guesses by gathering as much deductive information as possible first.
What are the difficulty levels?
Beginner: 9×9 grid with 10 mines (12% mine density). Intermediate: 16×16 with 40 mines (16%). Expert: 30×16 with 99 mines (21%). Higher density means more forced guesses and harder logical deductions.