Minesweeper is won by revealing every safe cell without detonating a mine; on this 9-by-9 beginner board, that means uncovering all 71 safe cells while avoiding 10 hidden mines.
To explain it to another person, teach the goal first, then the meaning of the numbers, then the controls, and finally the distinction between a clue and a flag. Use the Minesweeper game as a live demonstration so every rule can be tied to a visible cell or action.
The objective and board at a glance
The board begins with 81 covered cells arranged in nine rows and nine columns. Ten cells contain mines, while the other 71 are safe. Each round asks the player to reveal every safe cell without revealing a mine. That definition is the simplest way to explain the entire objective: find and open everything that is not a mine.
| Game element | Official rule | Simple explanation |
|---|---|---|
| Board | 81 cells in a 9-by-9 grid | Ten cells hide mines and 71 are safe. |
| Revealed number | Exact mine count among eight-or-fewer neighbors | The number tells you how many mines touch that cell. |
| Blank cell | No mines among its neighbors | A zero opens an area of connected blank cells. |
| Flag | A player-created note that protects a covered cell | It marks a suspicion, but it does not prove a mine is there. |
| Revealed mine | Ends the round | The board freezes and Restart is required. |
| Win | Every safe cell is revealed | All 71 safe cells have been uncovered without a mine. |
One implementation detail should be stated clearly: this particular board is fixed rather than randomly regenerated. The initial keyboard cursor begins on a safe cell, so it can be revealed immediately with Space or Enter. Restart returns the same mine layout, which makes the board repeatable. That behavior belongs to this beginner implementation; it is not a universal rule for every version of Minesweeper.
What every revealed number means
A number is an exact count of mines in the cells touching the revealed square horizontally, vertically, and diagonally. An interior cell can have eight neighbors, while cells along an edge or in a corner have fewer. The revealed cell itself is not included in the count. The number does not describe the total number of mines on the board and it does not mean that the cell containing the number is a mine.
Worked clue: The counting rule is: mines among the cell’s neighbors = the number displayed. If a cell shows 1 and two of its neighbors are still covered, exactly 1 of those two covered cells is a mine, so the other covered neighbor is safe.
A revealed zero has a different visual meaning: there are no mines in any neighboring cell. It opens as a blank and automatically expands through connected zero-count cells, also revealing the numbered cells bordering that zero area. The player does not need to select each square in the region manually. Once a safe region opens, its numbered border supplies the clues for deductions around the remaining covered cells.
Show the controls while you explain them
Keep the explanation practical by demonstrating each input beside the rule it performs. The keyboard controls are especially useful because they separate moving, revealing, and flagging into distinct actions.
| Input | Action |
|---|---|
| Arrow keys | Move the selected cell. |
| Space or Enter | Reveal the selected cell. |
| F | Add or remove a protective flag on the selected covered cell. |
| Normal mouse click | Reveal the selected cell. |
| Mouse context menu | Toggle a flag. |
Flags can be placed only on covered cells, and no more than ten flags can be visible at once. Space and Enter do nothing while a cell is flagged, so the flag prevents that covered cell from being revealed accidentally. A revealed cell cannot be flagged. Mentioning these limits prevents a learner from thinking flags are merely decorative or that they guarantee a correct mine identification.
Walk through one complete round
- State the goal. Explain that the player must reveal all 71 safe cells while avoiding the 10 mines. A number is information about neighboring cells, not a direct instruction to reveal the numbered cell’s area.
- Begin at the initial cursor. If the cursor has not been moved, press Space or Enter. This implementation guarantees that the starting cursor position is safe, but moving first could place the selection on a different cell.
- Read the first revealed result. If a number appears, identify its horizontal, vertical, and diagonal neighbors. If a blank appears, point out that zero adjacent mines have started an automatic expansion.
- Mark a likely mine without treating the mark as proof. Select a covered cell and press F to add a flag. Explain that the flag records the player’s current deduction and protects the cell, but only the surrounding numbers provide evidence.
- Continue with constrained deductions. Use each exact count to decide which remaining covered cells must be safe or could be mines. Reveal only cells that the clues support, and let zero expansion open any connected blank region automatically.
- Handle a mine correctly. If a mine is revealed, the round ends immediately and the board freezes. Select Restart to begin again. Because the layout is fixed, the player can use the same board to check the earlier deductions rather than expecting a newly generated arrangement.
- Finish by revealing every safe cell. A win occurs when all 71 safe cells have been revealed. The completed board also freezes so the result remains visible.
Keep flags and clues distinct
The most important distinction is that a number is supplied by the game, while a flag is supplied by the player. The number states an exact fact about the mines touching that cell. The flag says, “I believe this covered cell is a mine,” and temporarily stops a reveal action there. The game does not validate the flag when it is placed; incorrect flags can therefore remain until the round ends.
That distinction also explains why flagging every doubtful square is not a substitute for solving. A flag protects a square, but the clue system is what supports a decision. For a more detailed look at that distinction, see does a flag guarantee a mine in Minesweeper?
A plain-language explanation you can reuse
“Your job is to uncover every square that does not contain a mine. When a square opens with a number, that number tells you exactly how many mines are touching it from the side, above, below, or diagonally. A blank means there are no mines touching it, and the blank area opens automatically. Use a flag to record and protect a square you believe contains a mine, but use the numbers to decide where it is safe to reveal. If you open a mine, the round ends and you restart.”
After giving that explanation, ask the other person to point to one covered square and say whether its status can be determined from the visible clues. Then ask them to identify the neighboring cells included in a number. This checks comprehension without turning the introduction into a full strategy lesson. If they understand the clue, the goal, and the purpose of a flag, they have enough information to begin safely.
Separate the fixed rules from playing strategy
Rules explain what every action means; strategy decides which action to take next. Once the basic rules are clear, a player can move from noticing clues to comparing possible deductions. For that next stage, how to choose your next step in Minesweeper focuses on the decision after the board has been read.
The distinction matters on this fixed board. A repeatable route can help a returning player improve, but memorizing one route is not part of the core rules. Other Minesweeper implementations may use different board sizes, mine counts, or generation methods. The broad rules followed here are also documented by GNOME’s Mines game rules and the KDE KMines handbook.
What the score and result represent
Scoring rewards safe cells rather than speed or flag accuracy. Each safe cell revealed adds ten points, including cells opened automatically during zero expansion. A completed result may be saved as the local best, but there is no public leaderboard and the score is not a measure of intelligence, attention, or workplace performance. A mine loss ends the round immediately; a win also freezes the board to preserve the completed result.
Finish the teaching session by separating outcomes from actions: revealing every safe cell wins, revealing any mine loses, and Restart is the way back into a clean round. On this implementation, Restart also restores the identical fixed mine set. Once those rules are clear, the learner can focus on the actual puzzle: using exact neighbor counts to choose each safe reveal.