First click is safe. The digit on a grid means how many mines around it.
The task is to find out all the mines. Click the face button to start a
new game. "2 choose 1" pattern is safe at the last, when other all grids
having been opened or marked.
Mouse(on Computer):
Click right button on a block to mark out a mine, click again to remove
the flag. After mark out all the mines around a digit, click(whether left
or right button) the digital grid to open the surrounded safe area. Click
left button to open a grid directly.
Touch(on Mobile or Pad):
Touch a block to mark a flag, touch again to remove the flag. When mark
out all the mines, touch digital grid to open the surrounded blocks. Long
touch to open a grid directly.
Minesweeper was originated from a game named "Cube" in 1973. In 1992,
Minesweeper was integrated into Mocrosoft's Windows 3.1, then became so
famous.