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A sliding puzzle, sliding block puzzle, or sliding tile puzzle is a combination puzzle that challenges a player to slide (frequently flat) pieces along certain routes (usually on a board) to establish a certain end-configuration. The pieces to be moved may consist of simple shapes, or they may be imprinted with colours, patterns, sections of a ...
Schroeder stairs can be perceived in two ways, depending on whether the viewer considers A or B to be the closer wall. Schroeder stairs (Schröder's stairs) is an optical illusion which is a two-dimensional drawing which may be perceived either as a drawing of a staircase leading from left to right downwards or the same staircase only turned upside down, a classical example of perspective ...
One game—lacking the 5 × 4 design of Pennant, Klotski, and Chinese models but a likely inspiration—is the 19th century 15-puzzle, where fifteen wooden squares had to be rearranged. It is suggested that unless a 19th-century Asian evidence is found, the most reasonably likely path of transmission is from the late 19th century square designs ...
The box accommodates the woman (although it is a very tight fit). The blades are inserted into the right side of the box. It appears as if the blades take up more space; when inserted, the handle fills up the width of the box on the outside: but the blade inside only slices a portion of the box. The sliding contraption is not as narrow as it seems.
working on the design of a new picture, which featured a flight of stairs which only ever ascended or descended, depending on how you saw it. [The stairs] form a closed, circular construction, rather like a snake biting its own tail. And yet they can be drawn in correct perspective: each step higher (or lower) than the previous one.
The smooth sheet of paper covering the back of a shoji can make it difficult to grip and slide the shoji from the outside. To solve this, a single square in the frame may be papered only on the opposite side, [29] and/or a groove may be cut in the outside of the frame (see image).
In the United Kingdom many stiles were built under legal compulsion (see Rights of way in the United Kingdom).Recent changes in UK government policy towards farming have encouraged upland landowners to make access more available to the public, and this has seen an increase in the number of stiles and an improvement in their overall condition.
The number of boxes matches the number of storage locations. The player, often represented as a worker character, can move one square at a time horizontally or vertically onto empty floor squares, but cannot pass through walls or boxes. To move a box, the player walks up to it and pushes it to an empty square directly beyond the box.