Sudoku 25x25 Volume 4: Sudoku Xtra Specials
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If you're a fan of giant Sudoku puzzles then this is the book for you! Printed in large page format on high-quality paper this book is packed with 50 enormous 25x25 Sudoku puzzles, each attractively presented in a range of symmetric patterns. Each puzzle is guaranteed human-solvable - you can complete every Sudoku in the book just by scanning rows, columns and boxes, without having to make any pencil mark notes. Visit www.SudokuXtra.com for more details.