Game Progress

Time Used

00:00

Progress

0%

Difficulty

Game Instructions

  • Click a cell and use the number pad to input 1-9
  • Incorrect numbers will be shown in red
  • Click "Clear" to remove the number from the selected cell
  • Click "Hint" to get a correct number

Sudoku Board

About Sudoku

Sudoku is a classic logic puzzle game where players fill a 9x9 grid with numbers 1-9, ensuring each row, column, and 3x3 subgrid contains no repeated numbers. Playing Sudoku helps develop logical thinking, concentration, and observation skills.

Sudoku Solving Methods

Master these Sudoku solving techniques to complete puzzles faster:

  • Single Candidate: When a cell can only contain one number, fill it in. This is the most basic solving method.
  • Single Position: If a number can only go in one position in a row, column, or box, place it there.
  • Row/Column/Box Elimination: Use the distribution of numbers in rows, columns, and boxes to eliminate possibilities.
  • Box-Line Reduction: Use the intersection of boxes with rows and columns to eliminate possibilities.
  • Candidate Marking: Mark all possible numbers in each cell and eliminate them through logical deduction.
  • Guessing (Last Resort): When stuck, try a number and see if it leads to a contradiction.

With practice, you'll find your solving speed and accuracy improving.

About Sudoku Game

Sudoku originated in Switzerland and became popular in Japan before spreading worldwide. The rules are simple, but solving requires logical reasoning, making it a beloved brain-training game.

Benefits of Playing Sudoku

  • Develops logical thinking and reasoning
  • Improves concentration and observation
  • Builds patience and perseverance
  • Suitable for all ages
  • Play anytime, anywhere
  • Prevents dementia, keeps brain active

Sudoku is not just entertainment but an excellent way to exercise your brain. Regular practice improves logical thinking and solving speed. Daily Sudoku practice helps maintain brain activity and prevent dementia.

About 212006.com Sudoku Platform

212006.com is a platform dedicated to providing quality online Sudoku games. We are committed to offering the best Sudoku experience:

  • Free Sudoku games
  • Multiple difficulty levels
  • Professional solving tips
  • User-friendly interface
  • Mobile-friendly
  • No download required

Our goal is to let everyone enjoy the fun of Sudoku while improving their logical thinking. Whether you're a beginner or an experienced player, you'll find suitable puzzles here.