Minesweeper Reloaded

The goal is to uncover all mines in a minefield without exploding any in shortest time.

How to play Minesweeper:
Tap any square and you will get a number or an empty square, number tells you the number of mines surrounding that number and empty cell means that square doesn't contain any mine next to it. Long tap on a square if you think that cell is a mine. You can remove that flag later if you think that's not a mine. The goal of the Minesweeper is to uncover all the cells and flag mines in a minefield by tapping through all the squares. Happy sweeping!