Discover beautiful handcrafted math puzzles and logic games.

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

The beautifully handcrafted puzzles are divided into six skill levels, from Beginner to Master.

The app features an excellent interface and tools for both new and experienced players, including a hidden (virtual) cage creator, combination panel, killer calculator, and double notation.

Smart hints reveal the next logical step to overcome challenges and help you 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 board contains dotted-line polygons called "cages." Most cages have a number in the top-left corner.

Rules:

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

2. A digit can appear only once within a single cage.

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

Puzzle Features:

* Beautiful, handcrafted boards.

* A unique solution for every puzzle.

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

Game Features:

* Smart Hints for guidance and learning.

* Weekly Challenge.

* Gallery game view.

* Play multiple games at the same time.

* Killer Calculator.

* Combinations panel for Killer cages.

* Hidden (Virtual) cage creator.

* Cloud Sync - Sync your progress across multiple devices.

* Keep Screen Awake.

* Light and Dark Themes.

* Sticky digit mode.

* See remaining cells for a digit.

* Select multiple cells simultaneously.

* Select multiple cells in distributed board locations.

* Multiple pencil mark styles.

* Double notation.

* Auto-remove pencil marks.

* Highlight matching digits and pencil marks.

* Multiple error checking modes.

* Performance tracking for each puzzle.

* Statistics and Accomplishments.

* Unlimited Undo/Redo.

* Various cell marking options—highlights and symbols.

* Track and improve your solving time.

* Board preview.

* Reset Level.

* Support for Mobile Phones and Tablets.