Killer Sudoku - Sudoku Puzzles

Killer Sudoku - the ultimate number puzzle that sharpens arithmetic, logic, and focus all at once. Unlike classic Sudoku, Killer Sudoku adds cages: groups of cells where the numbers must sum to a target value. The result is a deeper, more rewarding challenge that draws players from Sudoku, Kakuro, KenKen, Sumdoku, and Addoku. Whether you are a complete beginner or a seasoned puzzle solver, there is a difficulty level built for you. 10,000+ puzzles. Four difficulty levels. Zero filler. HOW TO PLAY KILLER SUDOKU • Fill every row, column, and 3×3 box with digits 1-9, just like classic Sudoku • Each cage (dotted outline) has a target sum shown in the corner - hit it exactly • No digit may repeat inside a cage, row, column, or 3×3 box • Every row, column, and box always sums to 45 - use that to eliminate possibilities • Easier grids can be solved with basic arithmetic; harder ones demand advanced Sudoku techniques KEY FEATURES • 10,000+ hand-balanced Killer Sudoku puzzles across Easy, Medium, Hard, and Extreme • Daily Challenge with a unique puzzle every day and a monthly medal tracker for streaks • Auto-solver to check or unstick yourself without losing progress • Paper-style notes for penciling in candidates • Unlimited undo so no move is ever permanent • Achievements and Leaderboards via Google Play Games • Detailed statistics: best times, streaks, and completion rates per difficulty • Multiple visual themes to match your style • Fully playable offline - no connection needed after install • Optimised for both smartphone and tablet layouts WHO IS THIS FOR Killer Sudoku suits anyone who loves number puzzles and wants a step up from standard Sudoku. It is particularly popular with fans of Kakuro, KenKen, Sumdoku, and Addoku - the cage mechanic bridges all of these puzzle types in one clean app. Play a puzzle a day or chase the leaderboard. Either way, your brain will thank you. Feedback and suggestions are always welcome at [email protected].