Very Hard Sudoku Online. Play Free!

Regularly solving very difficult sudoku puzzles on the Daily Sudoku Puzzles website can bring many benefits. It improves the development of logical thinking, improves concentration, relieves stress, improves memory and mental flexibility, and is fun to play.

Responsible and regular puzzle solving will help you become a more sophisticated player and enjoy the challenging challenges that expert level sudoku offers.

💡 So what is expert sudoku?

Expert Sudoku are Sudoku puzzles that are highly challenging and require advanced logical skills to solve.

They are the most challenging and a real challenge for experienced players.

✍️ How to play Expert Sudoku online?

The rules of expert Sudoku are no different from solving classic puzzles. Expert Sudoku is played on a 9×9 grid divided into 9 3×3 squares. At the beginning of the game some squares already contain numbers from 1 to 9. The player’s task is to fill in the remaining empty cells with digits from 1 to 9 so that each digit occurs only once in each row, each column and each 3×3 square.

💸 The benefits of expert sudoku

  • Development of logical thinking

Solving complex sudoku requires analysis and application of various logical methods. Solving puzzles regularly helps develop and improve logical thinking, which can be useful in other areas of life.

  • Improving Concentration and Attention

Playing sudoku requires a high level of concentration and attention to detail. Regularly solving challenging puzzles helps to train these skills, which can be useful in daily life and other tasks where focus is required.

  • Stress Relief and Relaxation

Solving complex sudoku can be a way to relax and take your mind off your everyday worries. It can help relieve stress, improve mood, and create a sense of accomplishment.

  • Improving memory and mental flexibility

Playing sudoku requires memorizing numbers and their placement on a grid. Regular puzzle solving promotes memory training and mental flexibility, which can be helpful for improving cognitive function.

  • Enjoyment and fun

Finally, solving complex sudoku can simply be an enjoyable and entertaining activity. It offers a challenge and an opportunity to have fun, especially for people who love puzzles and logic games.

📒 Tips on how to play expert sudoku

Techniques and tips for solving expert-level sudoku:

  • Identify repeating numbers

Examine the grid and look for any repeating numbers in rows, columns, or 3×3 squares. This will help you exclude certain numbers from other squares and make progress in solving the puzzle.

  • Use the “mutual exclusion” method (paired and triple candidates)

Pay attention to squares where only two or three digits are possible. If those digits can only be placed in those cells in a 3×3 row, column, or square, you can exclude them from other cells containing those rows, columns, or squares.

  • Apply the “counting” method

Determine which numbers are already filled in the rows, columns, and 3×3 squares. Using this information, you can logically deduce what numbers should be in the empty cells.

  • Try different possibilities

If you get stuck in a certain area of the puzzle, try different combinations of numbers. You may have to go back to the previous step if the solution turns out to be wrong, but experimentation may lead you to the right path.

  • Don’t forget to consider limitations

Always remember which numbers are already present in rows, columns, and 3×3 squares. This will help you avoid repetitions and find the right combinations.

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