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  • How to Solve Sudoku: A Step-by-Step Guide

    Mastering Sudoku: Logical Deduction Techniques for Solving Puzzles

    In conclusion, medium Sudoku puzzles are a great way to sharpen your puzzle-solving skills and keep your mind active. They provide the perfect level of challenge for both beginners and experienced players, making them a popular choice for Sudoku enthusiasts everywhere. So, give medium Sudoku puzzles a try and enjoy a fun and engaging puzzle-solving experience!

    Step 1: Look for Naked Singles

    Look for any cells that can only have one possible value.
    For example, if a row has only one empty cell and the other eight cells already have values, then the empty cell can only have one possible value.
    Fill in the value for that cell.

    Step 2: Look for Hidden Singles

    Look for any rows, columns, or sub-grids that have only one empty cell and the other eight cells already have values.
    Look at the empty cell and see if there is only one possible value that can be placed there based on the values already in the row, column, or sub-grid.
    Fill in the value for that cell.

    Step 3: Look for Locked Candidates
    Look for any rows, columns, or sub-grids where a particular digit can only be placed in two or three cells.
    For example, if the number 5 can only be placed in two cells in a row, then you can eliminate the possibility of placing the number 5 in any other cells in that row.
    This can help you narrow down the possible values for each cell.

    Step 4: Look for Naked Pairs, Triples, or Quads
    Look for any rows, columns, or sub-grids where two, three, or four cells contain the same set of two, three, or four possible values.
    For example, if two cells in a row have the same two possible values, you can eliminate those two values from all other cells in that row.
    This can help you eliminate possible values and narrow down the options for each cell.

    Step 5: Look for Hidden Pairs, Triples, or Quads
    Look for any rows, columns, or sub-grids where two, three, or four cells contain the same set of two, three, or four possible values, but those values are hidden within the set.
    For example, if two cells in a row have the same two possible values, but those values also appear in other cells in that row, you can eliminate those two values from all other cells in the row except the two cells that contain them.
    This can help you eliminate possible values and narrow down the options for each cell.

    Step 6: Look for X-Wing, Swordfish, and Jellyfish Patterns
    Look for any rows or columns where a particular digit can only appear in two, three, or four cells.
    If the same pattern occurs in another row or column, you can eliminate the possibility of placing that digit in any other cells in those rows or columns.
    This can help you eliminate possible values and narrow down the options for each cell.

    Step 7: Look for Chains and Colorings
    These are more advanced techniques that involve identifying chains of cells that can only contain certain values, and using those chains to eliminate possibilities in other cells.
    These techniques can be more complicated and require more practice to master, but can be useful for solving more difficult Sudoku puzzles.

    By following these steps and using logical deduction, you can solve most Sudoku puzzles. Remember to avoid making guesses or using trial and error, and to take your time and carefully analyze each cell in the grid. With practice, you can become a skilled Sudoku solver and enjoy the challenge of increasingly difficult puzzles.

    Level 8 ( Medium : 29 hint )

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      9 X 9 sudoku

      Easy
      1Level - 36hint
      2Level - 35hint
      3Level - 34hint
      4Level - 33hint
      5Level - 32hint
      6Level - 31hint

      Medium
      7Level - 30hint
      8Level - 29hint

      Hard
      9Level - 28hint
      10Level - 27hint

      Expert
      11Level - 26hint
      12Level - 25hint

      Expert - Silver
      13Level - 24hint
      14Level - 23hint
      15Level - 22hint
      16Level - 21hint
      17Level - 20hint

      Expert - Gold
      18Level - 19hint
      19Level - 18hint
      20Level - 17hint
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    9 X 9 sudoku

    Mastering Sudoku: Logical Deduction Techniques for Solving Puzzles

    In conclusion, medium Sudoku puzzles are a great way to sharpen your puzzle-solving skills and keep your mind active. They provide the perfect level of challenge for both beginners and experienced players, making them a popular choice for Sudoku enthusiasts everywhere. So, give medium Sudoku puzzles a try and enjoy a fun and engaging puzzle-solving experience!

    Step 1: Look for Naked Singles

    Look for any cells that can only have one possible value.
    For example, if a row has only one empty cell and the other eight cells already have values, then the empty cell can only have one possible value.
    Fill in the value for that cell.

    Step 2: Look for Hidden Singles

    Look for any rows, columns, or sub-grids that have only one empty cell and the other eight cells already have values.
    Look at the empty cell and see if there is only one possible value that can be placed there based on the values already in the row, column, or sub-grid.
    Fill in the value for that cell.

    Step 3: Look for Locked Candidates
    Look for any rows, columns, or sub-grids where a particular digit can only be placed in two or three cells.
    For example, if the number 5 can only be placed in two cells in a row, then you can eliminate the possibility of placing the number 5 in any other cells in that row.
    This can help you narrow down the possible values for each cell.

    Step 4: Look for Naked Pairs, Triples, or Quads
    Look for any rows, columns, or sub-grids where two, three, or four cells contain the same set of two, three, or four possible values.
    For example, if two cells in a row have the same two possible values, you can eliminate those two values from all other cells in that row.
    This can help you eliminate possible values and narrow down the options for each cell.

    Step 5: Look for Hidden Pairs, Triples, or Quads
    Look for any rows, columns, or sub-grids where two, three, or four cells contain the same set of two, three, or four possible values, but those values are hidden within the set.
    For example, if two cells in a row have the same two possible values, but those values also appear in other cells in that row, you can eliminate those two values from all other cells in the row except the two cells that contain them.
    This can help you eliminate possible values and narrow down the options for each cell.

    Step 6: Look for X-Wing, Swordfish, and Jellyfish Patterns
    Look for any rows or columns where a particular digit can only appear in two, three, or four cells.
    If the same pattern occurs in another row or column, you can eliminate the possibility of placing that digit in any other cells in those rows or columns.
    This can help you eliminate possible values and narrow down the options for each cell.

    Step 7: Look for Chains and Colorings
    These are more advanced techniques that involve identifying chains of cells that can only contain certain values, and using those chains to eliminate possibilities in other cells.
    These techniques can be more complicated and require more practice to master, but can be useful for solving more difficult Sudoku puzzles.

    By following these steps and using logical deduction, you can solve most Sudoku puzzles. Remember to avoid making guesses or using trial and error, and to take your time and carefully analyze each cell in the grid. With practice, you can become a skilled Sudoku solver and enjoy the challenge of increasingly difficult puzzles.

    Game Options

    Choose your preferred difficulty level and start playing:

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    9 X 9 sudoku

    Easy
    1Level - 36hint
    2Level - 35hint
    3Level - 34hint
    4Level - 33hint
    5Level - 32hint
    6Level - 31hint

    Medium
    7Level - 30hint
    8Level - 29hint

    Hard
    9Level - 28hint
    10Level - 27hint

    Expert
    11Level - 26hint
    12Level - 25hint

    Expert - Silver
    13Level - 24hint
    14Level - 23hint
    15Level - 22hint
    16Level - 21hint
    17Level - 20hint

    Expert - Gold
    18Level - 19hint
    19Level - 18hint
    20Level - 17hint

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