Killer Sudoku

Enjoy beautiful handcrafted math puzzles and engaging logic games.

Killer Sudoku by Logic Wiz is a captivating puzzle and math game—a free, entertaining logic and brain training app that joins the family of Sudoku and logic games developed by Logic Wiz.

Each puzzle is meticulously handcrafted and categorized into six skill levels, from Beginner to Master.

The app features a user-friendly interface and powerful tools for both beginners and experts, including: hidden (virtual) cage creator, combination panel, killer calculator, and dual notation.

Smart hints guide you through the next logical step, helping you overcome challenges and improve your skills.

The Logic Wiz Sudoku free app was selected as the Best Sudoku App and the Best Brain Training App.

About Killer Sudoku:

The game board includes dotted-line polygons known as "cages." Most cages display a number in the top-left corner.

Rules:

1. The number shown in the top-left corner of a cage represents the sum of all digits inside that cage.

2. Each digit may appear only once per cage.

3. For cages without a sum, only Rule 2 applies.

Puzzle Features:

* Beautiful, handcrafted game boards.

* Every puzzle has a unique solution.

* All boards are designed and created by Logic-Wiz.

Game Features:

* Smart hints for guidance and learning.

* Weekly challenges.

* Gallery-style game view.

* Play multiple games at once.

* Killer calculator tool.

* Combination panel for Killer cages.

* Hidden (virtual) cage creator.

* Cloud Sync—sync progress across multiple devices.

* Keep screen awake option.

* Light and dark themes.

* Sticky digit mode.

* See remaining cells for each digit.

* Select multiple cells simultaneously.

* Select scattered cells across the board.

* Multiple pencil mark styles.

* Dual notation support.

* Auto-remove pencil marks.

* Highlight matching digits and pencil marks.

* Multiple error-checking modes.

* Performance tracking per puzzle.

* Statistics and achievements.

* Unlimited undo/redo.

* Various cell marking options—highlights and symbols.

* Track and improve solving times.

* Board preview.

* Reset level option.

* Optimized for mobile phones and tablets.