Minesweeper is a game that might be known to every Windows users. This game is all about clearing mines. A very dangerous job is thus waiting for you. In front of you, you find a playing field with 16 by 16 individual fields. Behind these 256 fields, a total of 40 mines are hidden. You can now test whether a field contains a mine by clicking on it. Even with the first field, there thus is a certain risk that you might go under. This is a risk you have to take, because you simply do not know which fields the mines are hidden behind. If you get hit by a mine, you are dead. But if you catch an open field, this is where things get interesting. You can then see into the fields in the neighborhood to see if they contain mines and then defuse the mines. But the game does not show you the mines directly, but how many mines are located in the neighborhood of a field, in the eight neighboring fields. So if a three appears there, this is to say that three mines are hidden in the neighborhood of this field. You can see some fields already. In case of the other fields, you can use the exclusion principle to find out if they contain mines. Thus, your logic as well as combining ability are in demand. A good starting point are always the corners, because you have a lot of number fields here and only one possible minefield. So if you have the number one on a field and can only see one more field from there, then you can be sure that it contains a mine. In order to mark a mine / defuse it, you have to press the spacebar (space). Starting from these safe fields, you can click on the other fields or clear them. This of course only works if your assumption was correct - otherwise boom! So be on your guard and better check twice whether what you are assuming is also true.