nine by nine, ten mines. left click clears, right click (or long press) flags. first click is always safe. clear every empty square as fast as you can.
left click a square to begin
the board is nine by nine with ten mines hidden in it. left click a square to clear it. a number tells you how many mines touch that square. right click (or long press on a phone) to flag a square you think is a mine.
the first click is always safe. clear every square that isn't a mine to win. your time goes on the leaderboard.