Sudoku

Discover Sudoku, a classic number puzzle game that sharpens logical thinking. Arrange the numbers correctly and hone your problem-solving skills.

What is Sudoku?

Sudoku is a world-famous number puzzle game that requires you to fill in the numbers from 1 to 9 in a 9x9 grid so that each row, each column, and each 3x3 square contains no duplicate numbers. Although the rules are simple, Sudoku requires strong logical thinking, reasoning, and patience, making it appealing to all ages.

With many levels from easy to extremely difficult, Sudoku is not only a healthy form of entertainment but also helps train the brain, improve memory, and increase concentration effectively every day.

Basic Sudoku rules

Sudoku is a number-filling game based on a 9x9 grid, divided into nine smaller 3x3 squares. Your task is to fill in the numbers from 1 to 9 in the empty cells according to the following rules:

No duplicate numbers in rows

Each horizontal row must contain all the numbers from 1 to 9 and no number can be repeated.

No duplicate numbers in columns

Similarly, each vertical column must also contain all the numbers from 1 to 9, without repetition.

No duplicate numbers in 3x3 squares

Each small 3x3 square must contain all the numbers from 1 to 9, with each number appearing only once.

How to play Sudoku

To play Sudoku effectively, beginners need to understand each step from basic to advanced:

• Look at rows, columns, and empty cells: Find cells where only one number is possible.
• Eliminate possibilities: Compare the missing numbers with the rows, columns, and squares to eliminate invalid possibilities.
• Fill in numbers with certainty: Only fill in a number when you are certain; avoid guessing.
• Check frequently: After filling in a number, see if the related cells have changed the possibilities for the remaining numbers.

Advanced Sudoku solving techniques

Once you've mastered the basic rules, you can apply advanced strategies to solve Sudoku puzzles faster, especially at difficult or expert levels.

Elimination strategy

• Based on the numbers already filled in, eliminate invalid possibilities in rows, columns, or 3x3 blocks.
• When a cell has only one possible number remaining, you can fill it in immediately.
• This is a basic but extremely important strategy for solving difficult puzzles.

Row column alignment strategy

• If a number appears only in one row or column within a 3x3 block, you can eliminate that number from the remaining cells of the same row/column outside that 3x3 block.
• This helps limit possibilities and find the correct numbers.

Conclusion

Sudoku is a classic number puzzle game that is both entertaining and mentally stimulating, helping to improve logical thinking, concentration, and memory. From basic steps like filling in numbers in rows, columns, and 3x3 blocks, to advanced strategies like hidden pairs, pointing pairs, and chaining, players can develop their reasoning skills and patience.

Whether you're a beginner or a seasoned player, Sudoku always offers an exciting challenge with multiple difficulty levels, ensuring that each completed puzzle is a satisfying and rewarding experience. Alternatively, you can play Blocky Blast, which offers a simpler, more creative gameplay with vibrant colors.