Evil Sudoku: The Riddles of Mathematics (Paperback) (ISBN-13: 9780639805429)

Dive into the world of logic puzzles and sharpen your mind with our challenging Sudoku grids meticulously crafted to provide hours of entertainment.

In this edition you will find:

• A selection of 100 all-new puzzles
• Level: Very Hard (Evil) for advanced players not afraid of a challenge
• Pages: 60 Pages, 2 puzzles per page, large layout
• Answers: Provided in small text size
• Hours of fun: Whether you're looking for a relaxing way to unwind or a stimulating mental workout, Sudoku is the perfect companion. With our book by your side, you'll never be bored again.

This is a book for expert users with previous Sudoku experience, and who are familiar with the more obscure strategies required to solve EVIL puzzles!

Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9ﾗ9 grid with digits so that each column, each row, and each of the nine 3ﾗ3 sub-grids that compose the grid contain all of the digits from 1 to 9.

Sudoku, along with other mentally stimulating activities, can potentially be beneficial in combating dementia or Alzheimer's. Engaging in activities that challenge the brain, such as solving puzzles like Sudoku, may help to keep the mind sharp, increase concentration power and memory, and may contribute to cognitive reserve - the brain's ability to withstand damage from aging or disease.