Special Design Sudoku Variations Puzzle Books for SeniorsSudoku puzzles are a proven method for enhancing logic skills. As a logic puzzle, Sudoku is also a great brain game. If you play Sudoku every day, you'll soon begin to see improvements within your concentration and overall brain power. You could reduce your probabilities of Dementia or Alzheimer's simply by solving Sudoku puzzles. By using this selection of sudoku puzzle books you would experience enhanced brain capabilities for example focus, logical thinking, and memory. This specific puzzle book contains a top-quality variety of sudoku puzzles that are guaranteed to challenge you in the best way possible. This book contains 100 Sudoku variations in medium difficulty. The following Sudoku variants are included: Sudoku X Sudoku Hyper Sudoku Twins Sudoku Triathlon A Sudoku Triathlon B Sudoku Marathon Sudoku Samurai Sudoku 12x12 Sudoku 16x16 The regular sudoku rules apply to every 9x9 grid. Put numbers from 1 to 9 in every empty cell. Each row, each column, and each 3x3 box should consist of one of each digit. The puzzles on Sudoku Variants have one unique solution that you can get using logic, absolutely no guessing needed.Features: 100 Sudoku Variants Puzzle Books in medium difficulty An answer key for each sudoku puzzle Puzzles are printed on high-quality white paper, paper size 8,5 x 11 inches Very large print One Puzzle Per Page, solving could be easy on your eyes Choose your book today by clicking on the BUY NOW button at the top of this page.