Introduction
Sudoku is a classic logic puzzle game where the goal is to fill a 9x9 grid with digits 1 to 9. The rules are simple but challenging: each row, each column, and each 3x3 box must contain unique digits 1-9. Sudoku is not only entertaining but also exercises logical thinking and reasoning skills.
How to Use
Playing Sudoku is simple: 1) Click an empty cell to select it. 2) Use number keys 1-9 or the on-screen number pad to fill in the digit. 3) Ensure no row, column, or 3x3 box contains duplicate digits. 4) Use hints if you need help. 5) Complete the entire grid to win.
Features
- •Classic 9x9 Sudoku puzzles
- •Multiple difficulty levels
- •Hint and error checking features
- •Timer and move counter
- •Works on all devices - no installation required
- •Completely free with no registration needed
Frequently Asked Questions
What are the rules of Sudoku?
Fill the 9x9 grid with digits 1-9 so that each row, each column, and each 3x3 box contains unique digits 1-9 with no repetitions.
Are there any Sudoku tips or tricks?
Common techniques include elimination (if a digit exists in a row/column, it can't go there), finding sole candidates (only one digit can go in a cell), and box/line reduction. Practice improves your skills.
Does every Sudoku puzzle have a unique solution?
Well-designed Sudoku puzzles guarantee a unique solution. If you encounter multiple solutions or no solution, the puzzle may be poorly designed.