The Healthy Brain Book of Sudoku Variants (Healthy Brain Puzzles)

This book has a lot of sudoku. Like a lot. The author is a two time Sudoku World Champion medalist, bronze in 2014, silver in 2018 and has complied a great deal of puzzles to stimulate your brain. Beyond that, the author has incorporated fun variations to keep you thinking differently. The last chapter assigns multiple variations to each puzzle for extra brain bending.

(This book may contain a sharpie mark on the top or bottom edge and may show mild signs of shelfwear.)