Mind Puzzle Games For Adults: Gyokuseki Puzzle - 100 Large Print Puzzles

By Deborah Andrews

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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• Format: Paperback
• Language: English
• ISBN: 198334785X
• ISBN13: 9781983347856
• Release Date: July 2018
• Publisher: Independently Published
• Length: 116 Pages
• Weight: 0.40 lbs.
• Dimensions: 0.3" x 6.0" x 9.0"