World's hardest Sudoku 2021: 300 daily sudoku puzzles. Easy to Very hard sudoku.

World's hardest Sudoku 2021:300 daily sudoku puzzles. Easy to Very hard sudoku. - There are 300 Large Print Sudoku puzzles to solve in this puzzle book for adults. - 8.5x11 grid. 4 puzzle per page.- Large font - easy to read - ideal for seniors and low vision. - Solutions are provided at the back of the book.