Classic puzzle rules
Minesweeper Rules
Learn the Minesweeper rules in plain English: what the numbers mean, how flags work, whether diagonals count, how difficulty levels are built, and what you must do to win the board.
Basic Minesweeper Rules
Minesweeper is a grid-based logic puzzle. Some covered squares hide mines, and the rest are safe. Your job is to reveal the safe squares without clicking a mine. When you reveal a safe square, it may show a number, open a blank area, or help you find the next safe move.
The rules are simple, but every click matters. A good player does not click randomly. They use the numbers around the open area to decide which hidden squares are dangerous and which squares can be opened safely.
What Do the Numbers Mean in Minesweeper?
A number tells you how many mines touch that square. It is not a score and it is not a guess. It is an exact clue based on the eight possible neighboring squares around that number.
| Number | Rule meaning | How to use it |
|---|---|---|
| 1 | One mine touches this square. | If only one hidden neighbor remains, that hidden square is a mine. |
| 2 | Two mines touch this square. | If two nearby squares are already flagged, other hidden neighbors are safe. |
| 3 | Three mines touch this square. | Look for groups of hidden squares and compare nearby numbers. |
| 0 / blank | No mines touch this square. | Blank areas often expand automatically and reveal more clues. |
Do Diagonals Count?
Yes. Diagonal squares count in Minesweeper. A number can refer to the square above, below, left, right, and all four diagonal neighbors. This is one of the most important rules for beginners because many early mistakes happen when players count only horizontal and vertical squares.
How Flags Work
A flag is a marker. It helps you remember where you believe a mine is hidden. On desktop, flagging usually happens with a right-click. On mobile, this site uses long-press flagging. Flags do not remove mines, and they do not win the game by themselves. They simply help you organize your logic.
Use flags when you are confident. If you flag too many uncertain squares, the board becomes harder to read. If you never use flags, you may forget important information. The best approach is balanced: flag proven mines, then use those flags to find safe squares.
How Do You Win Minesweeper?
You win by revealing every safe square on the board. You do not need to click the mines. You also do not always need to place a flag on every mine, although flags usually make the board easier to solve.
- Reveal a safe square.
- Use the number clue to identify mines or safe neighbors.
- Flag squares that must contain mines.
- Open squares that are proven safe.
- Continue until every non-mine square is open.
Classic Minesweeper Difficulty Rules
Most players recognize three classic difficulty levels. They are useful because each one teaches a different kind of skill. Beginner is best for learning the rules, Intermediate builds pattern practice, and Expert creates pressure because the board is wide and contains many mines.
| Level | Board size | Mines | Main rule challenge |
|---|---|---|---|
| Beginner | 9 × 9 | 10 | Learning numbers, flags, and safe moves. |
| Intermediate | 16 × 16 | 40 | Following multiple clue areas at once. |
| Expert | 30 × 16 | 99 | Managing a large board with more pressure and more edge cases. |
Safe First Click Rule
Many modern browser versions use a safe first click rule so that your opening move does not immediately reveal a mine. This makes the game feel fairer for new players and gives every board a real starting point. After the first move, the normal rules apply: read the numbers, avoid mines, and clear safe squares.
Rule Examples for Beginners
A 1 touching one hidden square
If a numbered 1 touches only one covered square, that covered square must be a mine. Flag it. Then look at nearby numbers to see whether new safe squares become available.
A number already has enough flags
If a 2 already touches two flags, then the other covered squares touching that 2 are safe. This rule is one of the cleanest ways to progress without guessing.
Two numbers can work together
Sometimes one number alone is not enough. Compare neighboring numbers. A 1 beside a 2 may show that one area has an extra mine compared with another area. This is the beginning of real Minesweeper strategy.
Common Rule Mistakes
- Forgetting diagonals: diagonal mines count, so always check all eight neighboring positions.
- Flagging guesses as facts: a guessed flag can confuse the whole board.
- Opening squares too quickly: slow down when several numbers touch the same hidden area.
- Ignoring the mine counter: the remaining mine count can help near the end of a board.
- Thinking flags are required to win: flags help, but the real win condition is opening all safe squares.
Rules vs Strategy
The rules tell you what each square means. Strategy tells you how to use those rules efficiently. Once you understand the basics on this page, read the Minesweeper Strategy guide to learn patterns, probability, and expert board decisions.
Related Minesweeper Guides
Minesweeper Rules FAQ
What are the basic rules of Minesweeper?
Open safe squares, use numbered clues to locate mines, flag dangerous squares, and reveal every non-mine square to win.
Do diagonals count in Minesweeper?
Yes. A number counts all eight surrounding squares: left, right, above, below, and the four diagonals.
What does a 1 mean in Minesweeper?
A 1 means exactly one mine touches that numbered square.
What does a blank square mean?
A blank square means no mines touch that square. Blank areas often open automatically and reveal more numbers.
What happens if I click a mine?
The game ends immediately when you reveal a mine.
Do I have to flag every mine?
No. You win by revealing all safe squares. Flags are a tool for tracking mines, not the main win condition.
Can a number be higher than 8?
No. A square has at most eight neighboring squares, so the highest possible number is 8.
What are the classic Minesweeper levels?
Beginner is 9 × 9 with 10 mines, Intermediate is 16 × 16 with 40 mines, and Expert is 30 × 16 with 99 mines.
Is guessing against the rules?
No. Guessing is allowed, and some boards can require it. However, good players try to use logic first and guess only when the board gives no clear information.
Where can I play after learning the rules?
You can play directly on the homepage: Play Minesweeper online.