Strain your brain, t your eyes! With one puzzle on each page, large numbers and plenty of space to write, these super-sized sudoku are easy to read, but challenging to solve. Created by one of the world's top puzzle-makers, this third entry in our popular series is literally the next BIG thing in sudoku!
Frank Longo is a freelance puzzle creator who has had more than 3,000 puzzles published since 1993 and written many books for Sterling. He is known for being able to produce sudoku that are diabolically difficult yet fair, requiring the solver to use advanced techniques not found in typical newspaper and magazine puzzles.