The home is four-seasons and off-grid capable with the help of its power systems, which includes lithium-ion batteries, solar panels, and an inverter. The interior is separated into two spaces ...

Ignoring rotational and reflectional symmetries, there are two ways (shown above) of using a 6-centimetre cut to divide the grid into equal areas of identical shape. By making an 8-centimetre cut ...

The classic sliding block puzzle. The 15-puzzle consists of a 4-by-4 grid with tile numbered $1$ to $15$ placed in the grid. The object of this puzzle is to randomly arrange the tiles on the grid, and ...