Killer Sudoku

Engage in beautifully handcrafted math puzzles and logical games.

Killer Sudoku by Logic Wiz is a stimulating math and puzzle game that offers a free, entertaining logic challenge and mental workout. It joins the family of Sudoku and Logic games developed by Logic Wiz.

Each puzzle is artfully crafted and categorized into six difficulty levels, ranging from Beginner to Master.

Our app features an intuitive interface and tools for both new and experienced solvers, such as: a hidden (virtual) cages creator, a combination panel, a killer calculator, and dual notation.

Smart hints reveal the next logical step to help you tackle challenges and grow your skills.

The Logic Wiz Sudoku free app has been recognized as the Best Sudoku App and the Best Brain Training App.

About Killer Sudoku:

The board contains dotted-line polygons known as "cages," most of which display a number in the top-left corner.

Rules:

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

2. Each digit can appear only once within a cage.

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

Puzzle Features:

* Beautiful, handcrafted boards.

* Every puzzle has a unique solution.

* All boards are exclusively designed by Logic Wiz.

Game Features:

* Smart Hints for learning and guidance.

* Weekly Challenge mode.

* Gallery game view.

* Play several games at once.

* Built-in Killer Calculator.

* Combination panel for Killer cages.

* Hidden (Virtual) cage creator.

* Cloud Sync to save progress across devices.

* Keep Screen Awake option.

* Light and Dark themes.

* Sticky digit mode.

* Track remaining cells for a digit.

* Select multiple cells at once.

* Select distributed cells on the board.

* Multiple pencil mark styles.

* Double notation support.

* Auto-removal of pencil marks.

* Highlight matching digits and pencil marks.

* Multiple error checking modes.

* Solve time performance tracking per puzzle.

* Statistics and achievements.

* Unlimited Undo/Redo.

* Various cell marking options—highlights and symbols.

* Track and improve solving times.

* Board preview feature.

* Reset Level function.

* Optimized for mobile phones and tablets.