Sudoku Jigsaw Samurai - 200 Hard to Master Puzzles 9x9, Paperback by Veider, Dart, ISBN 1984164368, ISBN-13 9781984164360, Brand New, Free shipping in the US

Samurai Sudoku Jigsaw puzzle consists of 5 overlapping Jigsaw Sudoku grids. Place the digits 1 to 9 into every row and column of each of the regular 9x9 Sudoku grids, as well as each of the bold-lined jigsaw pieces.