About Mine Sweep
Mine Sweep is the grid-and-numbers classic that has been hiding on office computers since the early 1990s. The field is nine squares by nine and holds ten mines. Your job is to open everything else.
How it works
Every opened square shows a number from one to eight, or nothing at all. The number counts the mines in the surrounding squares, diagonals included. A blank means there are none nearby, so the game opens the neighbours for you, and a single lucky tap can clear a big patch.
Your first tap can never be a mine, and neither can any square touching it, so you always start with some information.
On a phone there is no right mouse button, so use the Flag mode switch under the board. While it is on, taps plant or remove flags and cannot set anything off.
Solving tips
Start with the simplest pattern. If a square shows 1 and only one unopened square touches it, that square is a mine. Flag it. Now look at every other number touching that flag: any that is already satisfied tells you its remaining neighbours are safe.
Corners and edges of the opened area give the most. A 1 at a corner of the cleared region often has a single candidate.
Count the flags. The status line shows how many mines are still unmarked, and near the end that number can settle a choice that the grid alone cannot.
Sometimes you really will have to guess. When that happens, pick the square with the best odds and get it over with early in the round.
Like every puzzle here, Mine Sweep is an HTML5 game: it runs in the page, with nothing to install.