Sheep and Wolves [SHEP-1-001P]
Similar Puzzle Books
1000 Loop Logic Puzzles – Collection II
US, CA; UK, DE, FR, ES, IT, other 
This book has ten loop logic puzzles: Moon or Sun, Linesweeper, Yajilin, Kuroshiro, Mid-Loop, Round Trip, Detour, I-Loop, Shingoki, and Dotchi-Loop.
