Sudoku

Score: 100
Time: 00:00
Difficulty:

How to Play

Basic Rules:

  • Fill each empty cell with a number from 1 to 9
  • Each row must contain all numbers from 1 to 9
  • Each column must contain all numbers from 1 to 9
  • Each 3x3 box must contain all numbers from 1 to 9
  • Some cells are pre-filled and cannot be modified

Controls:

  • Click any empty cell to select it
  • Use number buttons or keyboard (1-9) to input numbers
  • Use Erase button or Backspace key to remove numbers
  • Click "Check Solution" to verify your answers
  • Click "New Game" to start a fresh puzzle

Scoring System:

  • Starting score: 100 points
  • Correct number: +1 point
  • Incorrect number: -1 point
  • Time penalty: -5 points every 30 seconds
  • Game ends when score reaches 0

Visual Feedback:

  • Green numbers: Correct placement
  • Red numbers: Incorrect placement
  • Gray numbers: Pre-filled cells (fixed)
  • Blue highlight: Selected cell

Game End:

  • Game ends when you click "Check Solution"
  • Game ends when your score reaches 0
  • Submit your score to the leaderboard
  • Try to complete the puzzle quickly for a better score!