Difficulty Levels and Board Sizes

Minesweeper has shipped with three standard boards for over thirty years, and almost every version of the game uses the same dimensions. They are not just easier or harder versions of the same thing. Each one rewards a different skill.

Mine density is the share of tiles that contain a mine. It is the number that actually decides how hard a board feels, and it explains why the jump from intermediate to expert is much bigger than the jump from beginner to intermediate.

Beginner: 9 x 9 with 10 mines

Eighty-one tiles, ten mines. A good first click often opens a significant part of the board, and most positions resolve with the two basic deductions. Beginner is not a watered-down version of the game, it is the training ground: this is where you build the pattern recognition that later keeps you alive on expert.

Play it until you are finishing in well under a minute. A fast beginner board is almost pure execution, with no room for hesitation.

Intermediate: 16 x 16 with 40 mines

Two hundred and fifty-six tiles with forty mines. This is the board most players spend their time on, and the one where Minesweeper starts to feel like a real puzzle. There is enough space that a corner of the board can stay unread for a long time, and enough density that careless clicking punishes you quickly.

Intermediate is also where chording starts to matter more than raw deduction speed. If you are stuck around the two-minute mark, chording is almost always the thing holding you back.

Expert: 30 x 16 with 99 mines

Four hundred and eighty tiles, ninety-nine mines, roughly one mine for every five tiles. Expert is the standard competitive board and the one every world record is measured on.

Two things make expert different. First, one in five tiles is a mine, so there is far less empty space and cascades are rare — you have to read the board rather than let it open itself. Second, a board this size almost always contains at least one position that cannot be solved by logic alone. Finishing an expert board is as much about handling the inevitable guess calmly as it is about being fast.

Custom boards

The custom form on the home page lets you set your own width, height and mine count. A few things worth trying:

• High density, small board. A 9 x 9 board with 20 mines is brutal and surprisingly good practice for expert.
• Long and thin. A 30 x 5 board strips the game down to a single strip of deduction.
• Big and sparse. A 30 x 16 board with 40 mines is relaxing and teaches you to manage large cascades.

Which level should you play?

There is no wrong answer. The board you finish is worth more than the board you keep restarting because the opening was not perfect.