Killer Sudoku

Killer Sudoku is a Sudoku variant that involves solving puzzles where the sums of values in each cage are given. The app includes 4×4 and 6×6 puzzles for beginners, as well as 8×8 and 9×9 puzzles at various levels of difficulty. The app offers a variety of features to help users learn and solve the puzzles, including automatic notes, drag and copy functions, and a sum calculator. The app aims to provide a challenging and engaging experience for users looking to improve their brain function through puzzle-solving.

1. Killer Sudoku is a Sudoku variant that is challenging and engaging for players of all levels.
2. The app includes a variety of puzzles, including 4×4 and 6×6 puzzles for beginners and 8×8 and 9×9 puzzles for more advanced players.
3. The app offers interactive hints and tutorials to help players learn and improve their skills.
4. Killer Sudoku is a great way to improve cognitive skills and brain function.
5. The app has a user-friendly interface and includes features such as automatic notes, drag and drop entries, and a sum calculator to make solving puzzles easier and more efficient.

Killer Sudoku, Sumdoku, Mathdoku, Sudoku, brain training, 4×4, 6×6, 8×8, 9×9, puzzles

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 4×4 and 6×6 puzzles, perfect for beginners, with contextual hints to help you learn Killer techniques interactively. From there you graduate to 23 levels of chunky 8×8 and full-size 9×9 puzzles, guaranteed to stretch any brain. Are you one of the very few who can conquer 9×9 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.