Minesweeper Patterns: How to Win Without Guessing

How the numbers in Minesweeper work

Every revealed number tells you how many mines touch that square, counting all 8 neighbors: left, right, up, down and the four diagonals. A 1 means exactly one mine around it. A 3 means exactly three. A blank square means zero, which is why blanks open up whole areas on their own.

That is the whole game: each number is a small equation, and the squares it touches are the unknowns. You only need to guess when the equations around you really have more than one answer, which happens far less often than most players think.

Before any pattern, two habits help. Flag a mine as soon as you are sure of it, so the numbers around it become easier to read. And work from the edge of the open area inward, one number at a time.

Pattern 1: the lonely 1 (find a sure mine)

Look along the border of the open area for a 1 that touches only one hidden square. Every other square around it is already open. The mine it counts has nowhere else to be, so that hidden square is a mine.

The same logic works for any number: if a 2 touches exactly two hidden squares, both are mines, and if a 3 touches exactly three, all three are mines. When the number equals the count of hidden squares around it, flag them all.

Pattern 2: the satisfied number (open safe squares)

Now turn it around. When a number already touches as many flags as its value, it is satisfied: every other hidden square around it must be safe.

You can open those squares one by one, or use chording: click or tap the satisfied number itself, and all of its unflagged neighbors open at once. On NitroPlayer chording works with a click on a computer and a tap on a phone. Be careful: chording trusts your flags, so a wrong flag opens a mine.

These first two patterns, a sure mine and a satisfied number, are what the video above shows. Together they clear most Beginner boards with no guessing at all.

Pattern 3: 1-1 starting at a wall

Picture a straight row of numbers running along a line of hidden squares, and the row starts at the edge of the board (or next to an open area that acts like a wall). The first number is a 1 and the second is also a 1.

The first 1 touches only two hidden squares, call them A and B, so its mine is in A or B. The second 1 touches A, B and the next square, C. Its one mine is already used up by A or B, so C is safe. Open it.

Pattern 4: 1-2-1

When you see the numbers 1, 2, 1 in a row along a straight line of three hidden squares, the mines are across from the two 1s and the square across from the 2 is safe.

Why: the 2 needs two mines among its three hidden squares. If the middle square were a mine, one of the 1s would end up touching two mines, which is impossible. So the 2 must take the two outer squares, one for each 1.

Pattern 5: 1-2-2-1

In a row of 1, 2, 2, 1 along a straight line of hidden squares, the mines are across from the two 2s, and the squares across from the two 1s are safe. Flag the two in the middle and open the outer ones.

Both 1-2-1 and 1-2-2-1 show up again and again on Intermediate and Expert boards, usually along long straight edges of the open area. Once you recognize them by shape, you stop counting and simply play them.

When you really have to guess

Some positions cannot be solved by logic. The classic one is a 50/50: two hidden squares, one mine, and no number anywhere that tells them apart. When that happens:

• Solve everything else first. Other parts of the board may later give you the missing clue, and the mine counter can settle it at the very end.
• Guess early, not late. If a guess is unavoidable, make it before you spend ten minutes on the rest of the board.
• Prefer squares far from numbers when there is no better information, because they are more likely to open a new area than to hit a mine.

Practice levels on NitroPlayer

On a phone, long-press a square to flag it and tap a number to chord. You can also play the daily board, which is the same for everyone, or challenge a friend to a duel on the exact same minefield.