Killer Sudoku

sutts101

Contains adsIn-app purchases

About this game

The king of sudokus, perfect for brain training!

Killer Sudoku (aka Sumdoku / Mathdoku) is a Sudoku variant where cells are grouped into cages and the sums of the values in each cage are given. Once you know Killer, you will never go back to Classic again...

The app includes lots of cute little 4x4 and 6x6 puzzles, perfect for beginners, with contextual hints to help you learn Killer techniques interactively. From there you graduate to 23 levels of chunky 8x8 and full-size 9x9 puzzles, guaranteed to stretch any brain. Are you one of the very few who can conquer 9x9 level 15???

The app has everything you could wish for: gazillions of puzzles at all sizes and levels, automatic notes, drag copy & repeat entries, sum calculator, cage summer, progress validator, and hints.

Ratings and reviews

Very good app. Took a bit of time to get used to it, but you can make notes, sum cages and get the combinations that make up the cages. I don't like that you have limited times to do verifications or you will need to pay for more. It would also be nice if it cleaned up the notes, taking out options that are no longer possible bc you entered the number in the same row etc. This would speed up the tedious part of the puzzles. It would also be nice if you could select multiple cells to make notes

My favourite type of Sudoku. Nice clean layout and very welcome absence of ads. I love not having to juggle between two grids for actuals and pencil marks. The all in one grid is much less error prone. One small criticism for which I've deducted a star. The cage outlines and numbers in pale green are quite hard to see on the small screen of a phone. Nothing wrong with black as in most newspaper puzzles, or maybe dark blue.

Excellent gameplay, easy to use. Different levels of challenge help you improve. Update: I've bought all the expansions and no other KS app is as good as yours. Please publish more levels!

What's new

Minor updates