Back for a tenth volume thanks to continuing demand, Sudoku 16x16 Volume 10 contains 50 more attractively-designed large 16x16 Sudoku puzzles. Every puzzle can be solved just by observation - you don't need to make any pencilmark notes in the grid if you don't want to. At this size of puzzle that's really important Just place 1 to 9 and A to G into each of the rows, columns and 4x4 boxes. Visit www.sudokuxtra.com for more books in the series.

Returning for an eleventh volume thanks to continuing demand, Sudoku 16x16 Volume 11 contains 50 more attractively-designed large 16x16 Sudoku puzzles. Every puzzle can be solved just by observation - you don't need to make any pencilmark notes in the grid if you don't want to. At this size of puzzle that's really important Just place 1 to 9 and A to G into each of the rows, columns and 4x4 boxes. Visit www.sudokuxtra.com for more books in the series.

Returning for a tenth volume thanks to continuing demand, this tenth volume 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.