Once purchased, this book will be printed and posted by Amazon. ★★★ EASY TO MEDIUM SUDOKU BOOK FOR ADULTS & SENIORS - JUMBO PRINT ★★★ 🎁🧩📚⏳ KEEP YOUR BRAIN SHARPER - SEE RESEARCH BELOW ★ JUMBO PRINT: 40 PT FONT SIZE PUZZLES. ★ HOURS OF MENTAL STIMULATION: 51 EASY & 51 MEDIUM PUZZLES = 100+ PUZZLES TO CONQUER. ★ EXTRA LARGE BOOK: 8.5 x 11 INCH ALMOST A4. ★ SOLUTIONS INCLUDED: 20 PT FONT SIZE SOLUTIONS. Ready to dive into the world of Sudoku like never before? Click on 'Buy Now' and make this "Sudoku Puzzle Book" yours. Sharpen your mind, relax, and conquer the Sudoku challenge! Don't miss out on this exceptional Sudoku experience. Order your copy today and become a Sudoku Mastermind! BATTLE DEMENTIA & ALZHEIMERS The largest online study to date shows that older adults who regularly participate in word and number puzzles have sharper brains. According to research on more than 19,000 participants, led by the University of Exeter and King's College London, the more regularly adults aged 50 and over played puzzles such as crosswords and Sudoku, the better their brain function was. Dr James Pickett, Head of Research at Alzheimer’s Society, said: This research, much like research we’ve seen in the past, suggests that regularly enjoying word and number puzzles has a positive impact on thinking skills.