Killer Sudoku A combination of Sudoku and Kakuro Challenges. It to have both challenges within 1 game board, unique digit in a row, column, grid, and at the same time unique digit within the designated caged-grid that could sum up to cage value. You’ll never regret having this Killer Sudoku Challenge, which is just perfectly challenge your mind, your logical thinking skill, your brain cells! Interrupted? Need a Break? Exit Killer Sudoku Challenge and you’ll get to see your incomplete puzzle is saved and awaiting for your return. Stuck? Need some guide? Simply click on hints and you'll get an answer right away! Useful hints as aid, why not! Unlimited puzzles with varied level of difficulty to fit your choice. Feature: - Intuitive Number Pad - Smart Notes - Conflict Checking - Auto Save Mode - Levels of Difficulty - Endless, Randomly Generated Puzzles - Game Timer - Pause/Resume Puzzle - Smart Hints - Number combination hints