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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 ...
'wooden blocks') is a sliding block puzzle thought to have originated in the early 20th century. The name may refer to a specific layout of ten blocks, or in a more global sense to refer to a whole group of similar sliding-block puzzles where the aim is to move a specific block to some predefined location.
The original applications of nondeterministic constraint logic used it to prove the PSPACE-completeness of sliding block puzzles such as Rush Hour and Sokoban. To do so, one needs only to show how to simulate edges and edge orientations, and vertices, and protected or vertices in these puzzles. [2]
These puzzles do indeed have efficient solutions. It doesn't work for more general sliding-block puzzles. The fact that general sliding-block puzzles are PSPACE-complete to solve means that effectively, you can build computers out of sliding-block puzzles. Here is another paper, more accessible than the above references, which shows this: Hearn ...
Klotski and Fifteen puzzle are different things. They only have one thing in common -- sliding blocks. The main target for fifteen puzzle (jeu du taquin in French) is to slide 15 square blocks in a 4x4 square boundary so that they will be rearranged. OTOH, the aim of Klotski is to move one block out of a trapped boundary, enclosed by other blocks.
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Lebbeus Edward A Hordern, known as Edward Hordern, (21 March 1941 [1] - 2 May 2000 [2]) was the world's leading authority on sliding block puzzles, and was renowned for his puzzle solving abilities. Hordern had an extensive mechanical puzzle collection and was an author on the topic of mechanical puzzles.
Rush Hour is a sliding block puzzle invented by Nob Yoshigahara in the 1970s. It was first sold in the United States in 1996. It is now being manufactured by ThinkFun (formerly Binary Arts). ThinkFun now sells Rush Hour spin-offs Rush Hour Jr., Safari Rush Hour, Railroad Rush Hour, Rush Hour Brain Fitness and Rush Hour Shift, with puzzles by ...