Reading the numbers
Every revealed number counts the mines in the eight squares touching it, and almost the whole game comes from two rules applied over and over. If a number already has that many flags around it, every other neighbour is safe and can be opened. If a number has exactly that many unopened neighbours left, all of them are mines.
When neither rule fires, compare two numbers that share squares. A 1 next to a 2 where both touch the same pair of hidden cells tells you the mine the 1 is counting must be in that pair, so the 2's third neighbour is a mine as well. Most of the board that looks like a guess is actually one of these overlaps.
Opening moves and the first click
Your first tap is always safe here — the mines are placed after it, and the tapped square plus its neighbours are kept clear where possible. That means the opening is free information, so take it in a corner or an edge rather than the middle: fewer neighbouring squares means the number you uncover constrains a smaller area, and a large empty region is much more likely to cascade open.
After that, work the frontier — the boundary between opened and unopened squares — instead of hunting across the board. Every deduction you can make lives on that line, and jumping to a distant corner usually means guessing when a solvable spot was still available.
When you really do have to guess
Minesweeper is not fully solvable by logic alone; some positions leave two possibilities that no amount of reading can separate. When you reach one, pick the square with the lowest chance of hiding a mine rather than the one nearest your cursor. Count the mines still unaccounted for against the squares still closed, and compare that overall rate against the local odds around the number you are looking at.
Guess early rather than late. A coin flip taken when eight squares remain closed risks a nearly finished board, while the same flip at the start costs almost nothing.
If speed is what you are after, flags are optional. Experienced players skip flagging on easy boards entirely and only mark mines when a cluster gets too complicated to hold in their head — the clock does not stop for tidiness.
Frequently asked questions
Can I lose on the first click?
No. Mines are only placed after your first tap, and the square you tapped (plus its neighbors) is kept mine-free whenever possible, so the game always opens with a fair start.
How do I place flags on a phone?
Turn on Flag mode with the 🚩 button — while it is on, every tap plants or removes a flag instead of revealing. On most phones a long-press also works, and on a computer you can simply right-click.
Does guessing ever become necessary?
Occasionally, yes — classic minesweeper boards are random, so late-game 50/50 situations can appear. Good players minimize guesses by working the border numbers first and flagging certain mines before opening uncertain areas.
What do the numbers in minesweeper mean?
Each number tells you how many mines touch that square, counting all eight neighbors including diagonals. A 1 next to a single unopened square means that square must be a mine — chaining deductions like this is the whole game.
What is chording in minesweeper?
Chording means clicking a revealed number that already has the right amount of flags around it to open all its remaining neighbors at once. Speedrunners rely on it heavily — it turns several careful clicks into one.
What is a good minesweeper time?
For casual players, simply clearing an Expert-size board is an achievement. Solid amateurs finish Expert in a few minutes, and world-class players do it in under 40 seconds. On Beginner boards, anything under 10 seconds is very quick.