How to Play Minesweeper

Minesweeper rules in 60 seconds

Minesweeper is a logic puzzle on a grid. Some squares hide mines; the rest are safe. Your job: reveal every safe square without detonating a mine.

1. Tap any square to reveal it. The first click is always safe — it can never be a mine.
2. If the revealed square is empty, the board flood-fills: every connected empty square opens at once, along with the numbered border around them.
3. If the revealed square is a number, that number tells you how many mines touch it.
4. Use the numbers to deduce which neighbours are mines. Flag them (long-press or right-click).
5. Reveal every non-mine square to win. Detonate a mine — game over.

That's it. No turn limits, no surprises. Just you, the grid, and pure deduction. On Minesweeper Battle you can play minesweeper online free — beginner, intermediate or expert.

What the numbers mean

Every number is a count. A number n means there are exactly n mines in the eight squares surrounding it (the four sides plus the four diagonals). Values run 1 through 8.

• 1 — one mine in the eight neighbours.
• 2 — two mines.
• 3, 4, 5 — denser. Common near corners and walls.
• 6, 7, 8 — extremely dense; you've found a cluster.

A revealed 0 is shown as empty — it just means no mines touch it, so its neighbours are all safe and the flood-fill keeps expanding from there.

The two core deductions

1. If a number equals the count of unrevealed neighbours, every one of those neighbours is a mine. Flag them all.
2. If a number equals the count of already-flagged mines around it, every other unrevealed neighbour is safe. Reveal them all.

Most of minesweeper is repeating these two checks along the boundary between revealed and unrevealed squares.

Flagging mines

Flags don't change the board — they're a memory aid for you. They also unlock the chord move on most clients: clicking a number whose flag count already matches its value reveals all its remaining neighbours in one shot.

• Mobile: long-press a square (or toggle the flag mode in the toolbar).
• Desktop: right-click the square.
• Minesweeper Battle quick-flag: tap the flag toolbar button to enter flag mode, then any tap places or removes a flag.

Don't over-flag. Speedrunners often skip flagging entirely on small boards because every flag costs an action. Flag only when the deduction is non-obvious or when you'll chord later.

How to play minesweeper without guessing

The dirty secret of minesweeper is that some boards force you to guess. The cleaner secret is that most don't. Here are the patterns that turn 95% of "guesses" into proofs.

1. The 1-1 pattern

Two adjacent 1s along a wall, both touching the same unrevealed pair: the further unrevealed cell is safe. Why? Whichever of the shared cells is the mine, both 1s are already satisfied — so the cell only the second 1 touches cannot also be a mine.

2. The 1-2 pattern

A 1 next to a 2, both with three shared unrevealed neighbours plus one unique neighbour for the 2: the 2's unique cell is a mine, and the cell only the 1 touches is safe.

3. Subset deduction

If a number A's unrevealed neighbours are a subset of number B's, you can subtract their values: the difference B − A tells you exactly how many mines live in B's extra cells. If that difference equals the count of those extras, they're all mines. If it's zero, they're all safe.

4. Count the mines you have left

The mine counter at the top is the most under-used hint in minesweeper. Late game, the remaining mine total often pins down whole regions on its own. If three cells are unrevealed and only one mine remains, two of them are guaranteed safe — let the local numbers tell you which one.

5. When a guess is unavoidable

Compute the probability per region rather than per cell. A 1-in-3 region beats a 1-in-2 region. When two regions are tied, prefer the one whose result tells you the most about its neighbours — information has value too.

Want to drill these patterns? Try the daily minesweeper challenge — same board for everyone, so you can compare moves with the leaderboard later.

Keyboard and touch shortcuts

On Minesweeper Battle, the entire board is touch-first. The flag toggle in the toolbar avoids the long-press latency of mobile browsers and is what most speedrunners on mobile use.

Daily minesweeper challenge tips

The daily minesweeper challenge serves the same board to every player. It rolls over at midnight UTC.

• Don't rush the opening. The first click determines the flood-fill region — a corner click usually opens less area than a center click.
• Open numbered borders first, then chord into the body. It saves seconds.
• Build a streak. Completing the daily on consecutive days locks in your streak counter on your profile.
• Compare with the leaderboard. If your time is way slower than top players, you're probably flagging too much.

1v1 minesweeper multiplayer

Minesweeper Battle runs live 1v1 minesweeper rooms: two players, one board, fastest sweeper wins.

• Same seed, parallel boards. You and your opponent see independent copies of the same layout. No one can sabotage the other.
• Skip flagging. Flags cost time and your opponent doesn't see them anyway. Reveal-only is faster.
• Watch the prize pool. Some rooms have a token entry; the winner takes it.
• Practice the openings. The first 10 reveals usually decide the race. Train them on the daily.

Want a private match? Send a friend an invite from the lobby and pick the board size together.

FAQ

Is the first click in minesweeper always safe?

Yes. On Minesweeper Battle, the board is generated after your first tap so the click and its flood-fill are guaranteed mine-free.

Can I play minesweeper offline?

Yes — once you load Minesweeper Battle, the PWA caches the assets. Single-player works without a connection; daily challenge and multiplayer need network.

Is Minesweeper Battle free?

Yes. Daily challenges, 1v1 multiplayer, leaderboard — all free. No ads.

Does minesweeper improve logic skills?

Pattern recognition, constraint reasoning, probability under uncertainty — minesweeper drills all three. It's a 3-minute brain warm-up, not a meditation.

What's the world-record time?

Beginner under 1 second, intermediate around 7 seconds, expert around 30 seconds. Compare yours on the global leaderboard.