Once purchased, this book will be printed and posted by Amazon. ★★★ EASY TO HARD SUDOKU BOOK FOR ADULTS & SENIORS - JUMBO PRINT ★★★ 🎁🧩📚⏳ KEEP YOUR BRAIN SHARPER - SEE RESEARCH BELOW ★ EASY TO HARD LEVELS : SO A CHALLENGE FOR ALL LEVELS, HOW FAR CAN YOU GO? ★ JUMBO PRINT: SO EASY ON THE EYES FOR EVERYONE ★ LARGE BOOK: 8.5 x 11 INCH ALMOST A4. ★ LARGE PRINT SOLUTIONS: YOU CAN CHECK YOUR ANSWERS ANYTIME YOU NEED TO. ★ HOURS OF MENTAL STIMULATION: WITH OVER 100 PUZZLES TO CONQUER. ★ BEAUTIFULLY DESIGNED: PRESENTED IN A CLEAR, CLEAN & PRECISE LAYOUT. ★ TOP QUALITY: PUZZLES, PAPER AND BOOK COVER. ★ GREAT GIFT: FOR ANYONE WHO WANTS TO KEEP THEIR MINDS SHARP AND ACTIVE. Ready to dive into the world of Sudoku like never before? Click ' 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 & ALZEIMERS 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.