About game
Fill every row and column with digits without repeating them until your 9x9 grid is complete. Solving a good sudoku requires sharp logic and patience as you carefully place numbers to clear the board. You can tap any digit to see its matching partners highlighted across the screen for better tracking. Beginners should start with the tutorial mode to learn techniques before tackling harder puzzles. Experienced fans of simon tatham's puzzles will find the escalating difficulty levels keep things fresh. Earning coins for every successful round adds extra motivation to beat your previous best times. Watch short clips if you get stuck to reveal a number or fix a pesky mistake. Play Sudoku: Smart Hints right now in your favorite browser without any downloads or registration.
How to play
1. Select a difficulty level in the main menu.
2. Click on an empty cell on the 9x9 grid.
3. In the bottom panel that appears, select a number from 1 to 9 or click "ERASE."
4. Sudoku rules: numbers cannot be repeated in the same row, column, or 3x3 grid.
5. Use the highlighter: click on an existing number to highlight all its copies on the grid in blue.
6. For beginners, a "TUTORIAL" mode is available with an explanation of basic logic techniques. 7. Fill in the entire grid correctly to receive a reward and move on to the next game.
Features
- Progressive difficulty: Choose between easy, medium, or hard settings to match your current skill level.
- Visual assistance: Tap any cell to instantly see all identical digits marked in blue throughout the board.
- Reward economy: Collect coins for every completed puzzle to track your growth as a sudoku master.
- Smart correction: Use ad-supported hints to clear errors or reveal missing digits when logic fails.
- Flexible input: Switch between placing numbers or clearing cells with a single click or tap.
Who is it for
Logic gamers and casual puzzle enthusiasts enjoy this brain training classic. It performs consistently for those seeking a quick mental workout during a commute or a longer session at their desk. Anyone who appreciates clean design and straightforward number challenges will spend hours filling these grids.
Controls
Select cell
Click or tap an empty square on the grid.
Input number
Tap one of the digits one through nine in the bottom panel.
Clear cell
Select the erase button to remove an incorrect number.
Highlight digits
Tap a number already present on the grid to see its other instances.
FAQ
How do I earn rewards in Sudoku: Smart Hints?
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You receive coins every time you successfully finish a grid by placing all numbers correctly.
Is Sudoku: Smart Hints compatible with mobile devices?
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Yes, the interface adjusts automatically to fit phones, tablets, and desktop screens perfectly.
Can I get help if I get stuck in Sudoku: Smart Hints?
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You can watch an optional ad to reveal a hidden number or automatically correct a mistake on the board.
