Killer Sudoku is a true legend among number games and puzzles. Killer Sudoku is a logical reasoning number puzzle game that combines elements of Sudoku, Sumdoku, Kenken, Addoku, Kakuro, etc. Despite the name, the simpler Killer Sudoku can be easier to solve than classic sudoku, depending on the sudoku solver's skill at mental arithmetic; the hardest ones, however, can take hours to solve. Whether you’re a fan of classic Sudoku or just looking for a number game or maths puzzle for a great ti