Killer Sudoku - Number Puzzle

Killer Sudoku - Number Puzzle brings you thousands of Killer Sudoku puzzles to train your brain, from the makers of Sudoku - Classic Number Puzzle. If you love Sudoku, number games, and logic puzzles, this is your next challenge.

Killer Sudoku takes everything you love about classic Sudoku and adds cages: outlined groups of cells whose numbers must add up to a target sum. It's a clever blend of Sudoku and math, also known as Sumdoku, Addoku, or Cross Sum — a fantastic daily brain workout.

🧩 HOW TO PLAY KILLER SUDOKU
- Fill every row, column, and 3x3 box with the numbers 1 to 9.
- Cages are the groups of cells outlined with dotted lines.
- The numbers in each cage must add up to the small sum shown in its corner.
- Numbers can't repeat inside a cage.
Every puzzle has exactly one solution, solvable with pure logic.

🎯 FIVE DIFFICULTY LEVELS
From Fast for beginners learning cages, up to Expert for seasoned solvers. Five carefully graded levels give a smooth learning curve with no sudden jumps in difficulty.

📅 DAILY CHALLENGE
A fresh Killer Sudoku puzzle every day. Build your streak, track it on the calendar, and go back to play any day you missed.

💡 SMART HINTS THAT TEACH
Stuck on a cage? The smart hint system explains the solving technique step by step — cage sum combinations, the rule of 45, and more — so you improve as you play. Or simply reveal the answer when you want.

📊 DETAILED STATISTICS
Track your best times, win rate, and win streaks for every difficulty level, and watch your logic skills grow.

✏️ NOTES & TOOLS
- Pencil notes and fast notes mode for marking candidates
- Running cage sums as you fill cells
- Unlimited undo, erase, and auto-complete
- Highlights for duplicate numbers and related cells
- Three-mistake limit to keep you sharp

📴 PLAYS OFFLINE
No internet needed. Enjoy Killer Sudoku on a plane, on the train, or anywhere you go.

Whether you're a Killer Sudoku beginner or a Sumdoku master, download Killer Sudoku - Number Puzzle and sharpen your mind with the number puzzle game logic lovers can't put down.