Desktop controls
Mouse
- Left click
- Reveal a covered square.
- Right click
- Place or remove a flag.
- Click a number
- Chord when its adjacent flag count matches the number.

Tools · New player briefing
Reveal every safe square without opening a mine. The numbers are clues: each one counts the mines hidden in the eight squares touching it.
Rule 01 · Read one clue
A number counts mines horizontally, vertically, and diagonally. It never tells you which neighboring square is the mine—only how many mines are in that local group.
Try it now · Guided first clear
Move from single-number deductions through 1–2–1 patterns, diagonal counts, and satisfied clues. Use Previous and Next to revisit any lesson. Wrong moves produce a hint instead of ending the board.
Question 1 of 20 · Pattern proof
Open the board, compare the three exact counts, flag both mines, and reveal the only safe square.
Training board · 3 × 3
Fixed lesson · 4 guided moves
Move 1 of 4
0/4Required action · reveal
This safe blank square touches no mines, so it opens the connected empty area and its numbered border.
Rule 02 · Your first board
Do not guess while a number still gives you a forced move. Work from the clearest edge of the revealed area and repeat the same loop.
Your first reveal is protected in our practice board. If it opens a blank area, the empty neighbors reveal automatically.
A number tells you how many mines are hidden in the eight squares immediately around it, including diagonals.
If a 1 touches only one covered square, that square must be a mine. Flag it so you can track the deduction.
When a number already touches the correct number of flags, every other covered neighbor is safe to reveal.
You win when every non-mine square is open. You do not need to place a flag on every mine to finish.
Desktop controls
Phone and tablet controls
Rules that prevent mistakes
A flag does not make a square safe and it does not have to be correct. The board trusts your flag when you chord, so a wrong flag can open an unmarked mine.
The board ends immediately when you reveal a mined square.
A zero-mine square automatically opens its connected blank area and numbered border.
Use the face or new-board control whenever you want another layout.
Reveal every non-mine square; flags alone never complete the game.
Minesweeper vocabulary
Ready for your first clear?