Volume 2 of DJAPE's Jigsaw Sudoku series. 160 puzzles where the standard 3x3 boxes have been replaced with irregularly shaped 9-cell regions - each puzzle with its own unique design. Standard Sudoku rules apply: 1-9 in every row, column, and jigsaw region.
Multiple difficulty levels from approachable to challenging. The Law of Leftovers technique - exclusive to Jigsaw Sudoku - is the key to the harder puzzles. All solutions at the back.
160 puzzles. 6 x 9 inch format. From DJAPE - 250+ puzzle books, including two massive 1,000-puzzle Jigsaw volumes. PhD in Computer Science, Washington Post since 2006.