Killer Sudoku Pro features not only cages which must sum to a given value, as in regular Killer Sudoku, but also cages that must multiply, subtract or divide their contents to reach the given clue value.

Printed on large, top-quality paper ideal for solving on, the 200 Killer Sudoku Pro puzzles vary in difficulty from easy to hard so whatever your preference or experience you'll always find a puzzle here to suit you.

Visit www.PuzzleBooks.org for a full list of other titles in this series, or search '200 Puzzles Moore' on Amazon for lots more titles in this series, including regular Killer Sudoku.