Simple Puzzles - Rebecca Howell - Books - - 9781723830129 - September 19, 2018
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Rebecca Howell
Simple Puzzles

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Gyokuseki ("Gyokusekikonko Puresu"; from Japanese, literally "gems and stones") is a logic puzzle created by Naoki Inaba (Japan). The aim is to fill a square grid with black circles ("gems") and white circles ("stones"). Every row and every column contains one black circle and random quantity of white circles. A number at the edge of the puzzle indicates how many circles can be seen in the corresponding row or column up to and including the black circle.

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Media Books     Paperback Book   (Book with soft cover and glued back)
Released September 19, 2018
ISBN13 9781723830129
Pages 116
Dimensions 152 × 229 × 7 mm   ·   181 g
Language English  

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