The object is to open all safe squares in the quickest time possible. Minesweeper starts when a player touches on a square.
The first click is always safe and reveals a number or an opening surrounded by numbers. Each number tells you how many mines touch the square. You can mark a mine by putting a flag on it with the long touch.
You win by clearing all the safe squares and lose if you click on a mine. A mine counter tells you how many mines are still hidden and a time counter keeps track of your score. There are three levels of difficulty:
Beginner has 10 mines, Intermediate has 40 mines, and Expert has 99 mines.
Sometimes in Minesweeper you have to guess. A typical case is a 50/50 guess when one mine is hidden in two squares. However, there are other times when you can improve your chance of guessing correctly.

Screenshots: