Brain Puzzles And Games: Stostone Puzzles - 100 Large Print Puzzles

By Deborah Andrews

Stostone ("Stone on Stone") is a logic puzzle invented by Nikoli. A rectangular or square grid is divided into regions. The goal is to blacken some cells of a grid ("stones") according to the following rules: - All black cells in a region must be connected horizontally or vertically. - A cell with a number indicates how many cells in the region must be blackened. - In regions without a number any amount of cells may be blackened (at least one). - When two cells are orthogonally adjacent across a region boundary, at least one cell must be white. - If all stones "fall down," they must cover exactly the bottom half of the grid.

• Format: Paperback
• Language: English
• ISBN: 198325407X
• ISBN13: 9781983254079
• Release Date: June 2018
• Publisher: Independently Published
• Length: 116 Pages
• Weight: 0.40 lbs.
• Dimensions: 0.3" x 6.0" x 9.0"