Best Brain Busters: Hakyuu Puzzles

by Rebecca Howell

Hakyuu (also known as "Ripple Effect", "Hakyuu Kouka", "Hakyukoka", "Seismic") is a logic puzzle published by Nikoli. The puzzle consists of a rectangular grid of any size divided into polyomino sections called "rooms". Each room must be filled with each of the numbers from 1 to the number of cells in the room. If two identical numbers appear in the same row or column, at least that many cells with other numbers must separate them.

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• Format: Paperback
• Language: English
• ISBN: 1723752118
• ISBN13: 9781723752117
• Release Date: September 2018
• Publisher: Independently Published
• Length: 116 Pages
• Weight: 0.40 lbs.
• Dimensions: 0.3" x 6.0" x 9.0"