Killer Sudoku

Killer Sudoku

Originating in Japan, Killer Sudoku is an amalgamation of Sudoku and Kakuro. The puzzle is solved like a Sudoku, but with an extra element. The grid is overlaid by a pattern of ‘cages’, usually denoted by dotted lines, that have a small number in the corner: the sum of all digits within the ‘cage’ must total this number. So when complete, the Killer Sudoku grid is filled with digits from 1 to 9 with no digit repeated in any row, column or cage.

Despite the ‘Killer’ moniker, simple Killer Sudoku puzzles can in fact be easier to solve than their regular counterpart, depending on the player’s mental arithmetic abilities.

Find out more about Killer Sudoku in our Puzzles A-Z

Like Killer Sudoku?
You should try Kakuro or Suguru – or, if you prefer Sudoku, one of its many variations, including Colour Sudoku.

Also Known As:

Addoku, Samu Nanpure, Sum Sudoku, Sumdoku, Sums Number Place, Tashizan Numpre

Play Killer Sudoku your way with Puzzler!


Killer Sudoku Magazines

Killer Sudoku’s popularity means that it appears in a number of our magazines as well as having its own dedicated title. Check out the full range:


Killer Sudoku Books, Printables and Other Products

We have a broad range of Sudoku products, with a few exclusively devoted to Killer Sudoku:


Killer Sudoku Apps

Though we haven’t yet created a Killer Sudoku app, we have two Sudoku alternatives for you to enjoy:


Online Killer Sudoku

Prefer to play your puzzles online? We have a huge selection that you can play right now in your web browser!


Download Sudoku Puzzler
Download Colour Sudoku Puzzler