Tons of Masyu for Adults & Seniors: 1000 Easy to Hard Puzzles (9x9) (Logic & Brain Teasers Series)

Masyu is a logic puzzle with simple rules and challenging solutions. It is played on a rectangular grid of squares, some of which contain circles; each circle is either "white" (empty) or "black" (filled) .This Logic Puzzles book is packed with the following features:- 1000 Masyu (9x9) Puzzles for everyone in 3 Difficulty Levels: 333 Easy, 334 Medium, 333 Hard.- Answers to every puzzle are provided.- Each puzzle is guaranteed to have only one solution.- Six puzzles per page (8.5 x 11 inches) .- Includes free bonus puzzles you can download book (Fitness for your brain: Word Search With Hidden Message: Train your brain anywhere, anytime! - 102 Puzzles for Adults and Seniors) .