Brain Arena

Minesweeper online

Four field sizes, full keyboard control and boards that never force you to flip a coin.

Today's puzzle Leaderboard

Pick a difficulty and play

Four sizes of the same game. The further right, the bigger the field and the denser the mines.

The daily puzzle is one board for the whole world, and that is the table that settles the ranking. Free play below is for training — those times go on a separate board.

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Four field sizes, four different games

A difficulty level here is two things at once: how big the field is and how densely the mines are packed. Size decides how much there is to scan, density decides how often you meet a spot where counting is the only way through.

No board here ever requires a guess

This is the one thing that makes minesweeper worth putting on a timed leaderboard. Every field is generated, then handed to a solver that plays it using only the rules a human uses: the field rule, the subset rule and the mine counter. If the solver has to guess anywhere, the field is thrown away and another one is generated.

So a mine you step on is always your miscount, never bad luck. That is also why one mine ends the game: with guaranteed no-guess fields, a three-mistake limit would simply reward guessing over thinking.

The server also opens the starting area for you. In the daily challenge the whole world therefore begins from the identical opened region — nobody wins or loses a board on a blind first click.

How to play here

  • Left click or Enter — uncover a field. Right click, F or a long press — place a flag.
  • Chording — click a number that already has all its mines flagged and the remaining neighbours open at once. On a 16×20 field this saves hundreds of clicks.
  • Keyboard — arrows or WASD to move, no input lag after a keypress.
  • Touch — a flag-mode button next to the mine counter, so you never need a second finger.
  • Saved game — reloading the page loses nothing: the same field, the same time, the same flags.
  • Dark mode — follows your system setting.

Who this is for

Beginners get a field that never punishes them for something they could not have known. Speedrunners get server-measured times, chording, full keyboard control and an expert field with the classic mine density. Everyone plays with no sign-up and nothing to download — the daily challenge is one field for the whole world, and the leaderboard is the reason it exists.