Returning for another volume thanks to continuing demand, this thirteenth book of giant Sudoku puzzles brings you 50 more enormous 25x25 Sudoku puzzles. Printed in large page format on top-quality paper, each puzzle is attractively presented in a range of symmetric patterns. Every sudoku in the book is guaranteed to be human-solvable - you can complete all of the puzzles just by scanning rows, columns and boxes, without having to make any pencil mark notes. Visit www.SudokuXtra.com for more books in the series.