Classic Minesweeper
The timeless game of logic and nerve. Reveal every safe square without detonating a mine. Choose Easy, Medium or Hard, race the timer, and try to beat your best.
Tap to reveal · long-press or right-click to flag · tap a number to chord. Toggle Flag mode for one-tap flagging on mobile.
The rules in brief
- Numbers show how many mines touch that square (up to 8).
- Flag squares you believe are mines so you don't click them.
- Clear every non-mine square to win — your time is saved locally.
- Your first click is always safe, so you always get an opening.
Brand new? Start with how to play Minesweeper, learn what the numbers mean, and speed up with keyboard shortcuts. Want boards that never need a guess? Play No-Guess Minesweeper.
Frequently asked questions
What are the classic Minesweeper difficulty levels?
The traditional levels are Beginner (9×9 with 10 mines), Intermediate (16×16 with 40 mines) and Expert (a wider grid with around 70+ mines). Minesweeper Lab maps these to Easy, Medium and Hard, and you can also adjust mine density yourself.
How do I win Classic Minesweeper?
Reveal every square that is not a mine. You never need to flag the mines to win — flags are just an aid for keeping track. When the last safe square is revealed, you win and your time is recorded.
What does chording mean?
Chording is revealing all remaining squares around a number at once. When a number already has exactly that many flags around it, tap the number again to open the rest of its neighbours instantly.
How is my best time saved?
Your fastest time for each difficulty is stored in your browser with LocalStorage. It stays on your device — there is no account and nothing is uploaded.
Explore more
Infinite Minesweeper
An endless board that never runs out of squares.
No-Guess Minesweeper
Boards solvable by pure logic — no 50/50 guesses.
Daily Minesweeper
One shared puzzle for everyone, every day.
How to Play
Learn the rules in two minutes.
Patterns
1-2-1, 1-2-2 and other must-know patterns.
The Numbers
What each number is really telling you.
Shortcuts
Play faster with mouse and key shortcuts.