Play Killer Sudoku Sudoku puzzles online. Challenge yourself with unique logic variations that add exciting new twists to the classic grid experience.
Killer Sudoku turns addition into a logical weapon alongside traditional sudoku constraints.
Target small cages where combinations are limited (e.g. sum of 3 for two cells must be 1+2).
Killer Sudoku keeps traditional constraints but adds sum cages that must add up to a specified total.
Every row, column, and 3x3 box must sum to exactly 45.