Playable puzzles
Classic and Daily Sudoku run directly in the browser with notes, keyboard support and responsive controls.
About SudokuGG
One thoughtful home for every kind of Sudoku.
SudokuGG brings classic grids, printable puzzle packs, math-based variants and new puzzle worlds together in one modern collection.
Useful away from the screen
The printable generator creates clean A4 puzzle sets with optional answer pages for home or classroom practice.
More than one grid
Kalkudoku adds arithmetic cages, while future modules are released only after their rules and controls are ready.
What is SudokuGG?
SudokuGG is an independent collection of free browser-based number and logic puzzles. It was created around a simple idea: a visitor should be able to open a useful puzzle immediately, understand the controls and keep solving without registration, downloads or a maze of unrelated pages.
The current playable collection includes Classic Sudoku in four difficulty levels, a shared Daily Sudoku, a Printable Sudoku generator and Kalkudoku. Mystery Sudoku is clearly marked as a future module rather than presented as a finished game.
How the puzzles are prepared
Every playable Sudoku is checked against a completed solution before it reaches the grid. A Classic or Daily Sudoku puzzle uses the standard 9×9 rule set: each row, column and 3×3 box must contain the digits 1 through 9 exactly once. Generated print sheets include separate solutions so a puzzle can be checked after it is solved.
Difficulty is not determined by appearance alone. Easier grids expose more direct placements, while higher levels require longer candidate chains and techniques such as pairs, locked candidates or X-Wing. The site does not promise that clue count by itself defines a level; the solving path matters too.
Designed for real play
SudokuGG is tested as both a game and a reading experience. Buttons need usable touch targets, the board must remain stable while numbers are entered, and the main controls should fit on common phone screens without forcing unnecessary scrolling. Keyboard input, notes, undo, hints and reduced-motion preferences are treated as core features rather than decoration.
Visual themes and effects are intended to support concentration. They should never change the rules, hide a digit or prevent a visitor from continuing a puzzle. When a device or browser cannot support an enhancement, the underlying game remains the priority.
Guides written to help you solve
The learning section explains rules and techniques in plain language. Articles are organized from first steps through advanced patterns, and each one links to a relevant practice level. We avoid presenting guesses as strategies and review examples against the same row, column and box constraints used by the games.
Content is published by the SudokuGG project and reviewed whenever a rule explanation, game behavior or supported feature changes. The editorial policy describes this process in detail.
Corrections and transparency
If a puzzle behaves incorrectly, a guide is unclear or a page describes a feature that no longer matches the site, please send the page address and a short explanation through the contact page. Meaningful corrections are prioritized over simply adding more pages.
SudokuGG may be supported by advertising in the future. Advertising will not determine puzzle solutions or editorial conclusions, and sponsored material will be identified if it is ever published. Privacy and consent information is available in the Privacy Policy and Cookie Policy.