Sudoku Corral - 200 Hard to Master Puzzles 7x7 (Volume 17) (Paperback) (ISBN-13: 9781729647752)

Corral (also known as "Bag", "Cave") is a logic puzzle.
The aim is to draw a single closed loop along the grid lines that does not intersect itself.
The loop goes around all numbers.
The numbers in the grid indicate how many cells inside the loop can be seen horizontally and vertically from that cell, including the cell itself.
Question marks can be used instead of clue numbers.
Each question mark can represent any nonzero integer.

The puzzle book contain:
- 200 Puzzles
- Handy 6 x 9 inch Book Layout
- 2 Puzzles per Page
- Ideal for Experts

In the book you will find a description and examples of solutions for all puzzles.
The book is for those who like logic and math problems. Decide, developing and improving.

Author: Dart Veider
ISBN-10: 1729647758
ISBN-13: 9781729647752
Publisher: Createspace Independent Publishing Platform
Language: English
Published: 11/02/2018
Pages: 138
Format: Paperback
Weight: 0.43lbs
Size: 9.02h x 5.98w x 0.30d