What is Sudoku Handler?

Sudoku Handler is a free educational web application that helps you learn Sudoku by solving puzzles one move at a time. It uses smart logical algorithms — not AI — to guide you through each step, teaching real Sudoku techniques such as naked singles, hidden singles, and more.

How does Sudoku Handler solve Sudoku puzzles?

Sudoku Handler uses a rule-based logical algorithm that mirrors how expert human solvers approach Sudoku. Instead of showing the full solution at once, it reveals one valid move at a time, explaining the technique used. This teaches you to solve Sudoku yourself rather than just giving answers.

Is Sudoku Handler free to use?

Yes. Sudoku Handler is completely free to use with no registration, no account, and no download required. It runs entirely in your web browser.

Can I enter a Sudoku puzzle from a book or magazine?

Yes. You can manually enter any Sudoku puzzle from a book, magazine, newspaper, or any other source directly into the Sudoku Handler grid. Once entered, you can use the step-by-step solver to get hints one move at a time.

What Sudoku techniques does Sudoku Handler teach?

Sudoku Handler teaches logical Sudoku solving techniques including naked singles (a cell where only one number is possible), hidden singles (a number that can only go in one cell within a row, column, or box), and other constraint-based elimination methods used by experienced Sudoku solvers.

What languages does Sudoku Handler support?

Sudoku Handler supports three languages: English, Turkish (Türkçe), and Japanese (日本語). You can switch between languages using the language selector in the app header.

Does Sudoku Handler work on mobile devices?

Yes. Sudoku Handler is fully responsive and works on smartphones, tablets, and desktop computers. It can also be installed as a Progressive Web App (PWA) on your device for a native app-like experience.

What is the difference between Sudoku Handler and other Sudoku solvers?

Unlike most Sudoku solvers that instantly reveal the full solution, Sudoku Handler shows only one move at a time and explains the reasoning behind it. This educational approach helps users genuinely learn Sudoku-solving logic rather than just seeing answers.

Sudoku Handler - Step-by-Step Sudoku Helper (One Move at a Time)

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