#9x9 Sudoku Game

9x9 Sudoku Game

AI Game

Free online 9x9 Sudoku game with multiple difficulty levels and scoring system

9x9 Sudoku Game-Free Online 9x9 Sudoku Game | allinAI.Tools

What is 9x9 Sudoku Game

Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 subgrids (also known as boxes or regions) contain all of the digits from 1 to 9 without repeating any numbers.

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How to Use 9x9 Sudoku Game

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
  • Pre-filled cells 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
  • Complete quickly for a better score!
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Frequently Asked Questions


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