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Shikaku is played on a rectangular grid. Some of the squares in the grid are numbered. The objective is to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle.
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Takenaga, Yasuhiko; Aoyagi, Shintaro; Iwata, Shigeki; Kasai, Takumi (2013). "Shikaku and ripple effect are NP-complete".
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168:. A Taste Of Mathematics / Aime-T-On Les Mathématiques. Vol. 17. Canadian Mathematical Society. pp. 1–7.
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under the name "Shikaku". The puzzle later spread to other publications and has been adapted into
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Determining whether a given instance of
Shikaku has a valid solution has been proven to be
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Wanko, Jeffrey J. (November 2009). "Japanese logic puzzles and proof".
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The game was invented by
Yoshiano Anpuku, a math student at the
225:(4). National Council of Teachers of Mathematics: 266–271.
61:, in 1989 and published by Japanese games magazine
191:"Inside Japan's Cult-Favorite Puzzle Laboratory"
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162:Mathematical Logic Puzzles on a Grid
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45:) is a logic puzzle published by
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189:Bellos, Alex (May 23, 2022).
159:. "Chapter 1: Rectangles".
138:. Nikoli. 20 September 2021
116:List of Nikoli puzzle types
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136:"Shikaku (Divide by Box)"
81:An initial configuration.
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291:Rectangular subdivisions
98:Computational complexity
219:The Mathematics Teacher
254:Congressus Numerantium
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231:10.5951/mt.103.4.0266
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301:Japanese board games
296:NP-complete problems
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32:shikaku ni kire
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200:. Retrieved
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140:. Retrieved
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16:Logic puzzle
260:: 119–127.
104:NP-complete
89:A solution.
67:video games
280:Categories
142:2024-05-21
122:References
43:Rectangles
239:20876604
110:See also
266:3220078
202:May 14,
53:History
20:Shikaku
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63:Nikoli
47:Nikoli
235:JSTOR
166:(PDF)
73:Rules
26:四角に切れ
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