Puzzle Games

Sudoku Online

Fill the full 9x9 grid using logic, careful placement, and a steady strategy. Choose a difficulty and solve the puzzle before the clock gets away from you.

How to Play Sudoku

✓Each row, column, and 3x3 box must contain the numbers 1 through 9 exactly once.
✓Select a square, then enter a number using the keypad or keyboard.
✓Use highlighting to track row, column, and box patterns while you work through the puzzle.

Tips for Playing Sudoku

•Scan rows and columns for missing numbers before making a guess.
•Look for the most constrained box first when a puzzle feels crowded.
•Use the mistake checker to catch placement errors before they derail your progress.

Frequently Asked Questions

Are the puzzles valid?

Yes. Every puzzle is generated from a valid solved Sudoku board and then partially cleared to create a playable challenge.

Can I reset the current puzzle?

Yes. You can reset the board to its original state or generate a completely new puzzle.

Is there a timer?

Yes. The timer helps you track how long a puzzle takes to complete, and it resets when you start a new challenge.