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Japanese puzzle box, closed Japanese puzzle box, open. A puzzle box (also called a secret box or trick box) is a box that can be opened only by solving a puzzle. Some require only a simple move and others a series of discoveries. Modern puzzle boxes developed from furniture and jewelry boxes with secret compartments and hidden openings, known ...
The puzzle was first printed in Puzzle Communication Nikoli #106; the original title is a combination of 'nuru' (Japanese: "to paint") and 'omino' ().In issue #112, the title was changed to the present one, which represents the four (of five) tetrominoes used in the puzzle: the L-shape, the straight, the T-shape, and the skew (square tetrominoes may never appear in the puzzle as they are a ...
In 1988, Non Ishida published three picture grid puzzles in Japan under the name of "Window Art Puzzles". In 1990, James Dalgety in the UK invented the name Nonograms after Non Ishida, [citation needed] and The Sunday Telegraph started publishing them on a weekly basis. [1] By 1993, the first book of nonograms was published by Non Ishida in Japan.
Hanayama is a Japanese toy company founded in 1933. [1] They are best known for their series of metal disassembly puzzles , " Huzzle [ jp ] " (also known as "Cast Puzzle"), which include reproductions of older designs, and new puzzles by other inventors such as Oskar van Deventer and Akio Yamamoto . [ 2 ]
Like many other combinatory and logic puzzles, Masyu can be very difficult to solve; solving Masyu on arbitrarily large grids is an NP-complete problem. [2] However, published instances of puzzles have generally been constructed in such a way that they can be solved in a reasonable amount of time.
A Heyawake puzzle. Heyawake (Japanese: γΈγγγ, "divided rooms") is a binary-determination logic puzzle published by Nikoli. As of 2013, five books consisting entirely of Heyawake puzzles have been published by Nikoli. It first appeared in Puzzle Communication Nikoli #39 (September 1992).