ISBN-13: 9781541019843 / Angielski / Miękka / 2016 / 162 str.
ISBN-13: 9781541019843 / Angielski / Miękka / 2016 / 162 str.
500 Sudoku Book is a collecting of 500 Sudoku puzzles in "extreme" difficulty. There are 4 puzzles per page in appropriate size and no symmetry applied. Solutions are provided at the end.