🔢 Sudoku Game

Challenge your mind with classic number puzzles!
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Sudoku Board

Difficulty Level
Board Colors
Light Cells:
Dark Cells:
Selected:
Given Numbers:
Time: 00:00
Notes Mode Active - Click cells to toggle notes

How to Play

  • Click on a cell to select it
  • Use number buttons or keyboard (1-9)
  • Each row must contain digits 1-9
  • Each column must contain digits 1-9
  • Each 3x3 box must contain digits 1-9
  • No duplicates allowed in rows, columns, or boxes
Keyboard Shortcuts
  • 1-9: Enter numbers
  • 0 or Delete: Clear cell
  • N: Toggle notes mode
  • H: Get hint
  • C: Check solution
  • Ctrl+N: New game
  • Ctrl+R: Reset
Helper Tools
Number Helper

Click a number to see all its positions:

1
2
3
4
5
6
7
8
9
Validation

The game automatically validates:

  • Row conflicts
  • Column conflicts
  • 3x3 box conflicts
  • Complete solution

Game Features

  • Multiple Difficulty Levels
  • Real-time Conflict Detection
  • Game Timer
  • Notes Mode
  • Hint System
  • Solution Checking
  • Color Customization
  • Responsive Design

Other Tools

Back to main calculator.