9 Out Of 10 Sudoku Enthusiasts Have Failed To Solve Our Sudoku Puzzles. Are You Up To The Challenge? Are you sick and tired of all those boring newspaper-grade Sudoku puzzles? Do you want to test your puzzle-solving skills and take on the hardest Sudoku puzzles out there? Do you want to spend endless hours sharpening your logic skills and giving your brain a workout? Discover The Hardest Sudoku Puzzle Book By Masaki Hoshiko! When it comes to boosting your focus, concentration and mental skills, Sudoku puzzles are exactly what you need. But just like all other puzzles, you need to find a real challenge that will push you to your limits and make the taste of solving the puzzle so much sweeter. Attention! This Sudoku Puzzle Book Is NOT FOR EVERYONE! Here are the requirements to even pick up our Sudoku puzzle book: 100+ Broken Pencils if you have snapped hundreds of pencils in half trying to find a number that solves the puzzles, then you are welcome. "Last Puzzle For Today" if you have uttered this phrase more than 100+ times and lied to yourself every single time, then you are ready to start solving our puzzles. Sudoku Dreams if every time you close your eyes, all you can see is 9 rows, 9 columns and 81 cells, then you are our ideal candidate. What's In It For You? 6 Reasons To Start Solving Our Puzzles Right Away: Spoil Yourself With The Most Challenging Sudoku Puzzles You Have Seen Uncover A Whole New World Of Hard Sudoku Puzzles In An All-In-One Book Do Not Settle For All Those Childish Sudoku Puzzle Books Open The Door To A Challenge Worthy Of Your Skills Keep Your Brain Engaged & Entertained For Hours On End Unleash Your Inner Sudoku Master Today Do You Know Someone Who Could Use The Challenge? Surprise your wife, husband, boyfriend, girlfriend, father, mother, sister, brother, grandparents or grandkids with our must-have Sudoku puzzle book! Click "Buy Now" & Embark On Your Newest Sudoku Adventure!