Game Minesweeper

Your task is to find all mined faces. Default mode is "initial pick". Click on faces without mines to get them opened. On every opened face will appear the number of mined neighbour-faces (neighbours are all faces with at least one common vertex). You can mark the faces, that you take for mines, by left mouse-click with shift-key pressed. If you click on an opened face, which has as much marked as mined neighbour-faces, all not marked neighbours get opened. To rotate the surface hold "o"-key pressed.