Medium Sudoku Friday | Sudoku #3

I started the week with the easy sudoku, so what better way to end the working week with a harder one? How fast you can complete it!

How to complete this medium-level Sudoku puzzle online:

  • Revert: will reverse your last action
  • Check: This will let you know if your answer is right.
  • Save: This will save your answers to the puzzle so far to your cookies. If you have cookies disabled, this will obviously not work.
  • Hint. Clicking into a square and choosing this will give you a number,
  • Solution: This will give you all the answers. Beware, you will have to start from scratch again if you click on this, unless you have saved your answers. Saving means when you refresh the page, the answers you have already given will be there.

Solve the Puzzle!

How to solve Sudoku

Sudoku is a number-based logic puzzle game that has taken the world by storm. It is a great way to exercise your brain and have fun at the same time. Whether you are a beginner or an experienced player, this article will provide you with all the tips and tricks you need to get started solving sudoku puzzles.
Easy Sudoku doesn't have to be too puzzling!
Easy Sudoku doesn’t have to be too puzzling!

The basic rules of sudoku are simple. Each row and column must contain the numbers one through nine. Additionally, nine 3×3 blocks within the grid must each contain the numbers one through nine. No number can appear more than once in any row, column, or 3×3 block.
If you are just starting out, the best way to begin solving sudoku puzzles is to use a process of elimination. Start by looking at the row, column, and 3×3 block that you are currently working in. Look for any empty cells that already have a number in the same row, column, or 3×3 block. That number cannot appear in that empty cell, so you can eliminate it as a possible option.
You can also use logic to make deductions about which numbers may appear in certain cells. For example, if a row has seven of the nine numbers in it, then you know that the remaining two numbers must appear in either the same row or in the same column. You can use this same logic for columns, 3×3 blocks, and even the entire grid.
Another helpful technique is to look for the numbers that appear most often in the same row, column, or 3×3 block. For example, if the number five appears three times in the same row, then you can be sure that the fifth empty cell in that row will contain the number five.
Once you get the hang of the basics, you can start to use more advanced strategies to solve sudoku puzzles. One such strategy is to look for “hidden singles.” A hidden single is a number that can only appear in one cell in a row, column, or 3×3 block. For example, if all eight cells in a 3×3 block have numbers in them except one, then the empty cell must contain the missing number.
Another advanced strategy is called “naked pairs.” This occurs when two cells in the same row, column, or 3×3 block have exactly the same two possibilities. For example, if two empty cells in the same row have the options “3” and “7,” then you can be sure that one of those cells will contain the number three and the other will contain the number seven.
Finally, you can use a technique called “X-Wing” to solve puzzles quickly. This involves finding two rows or columns that have the same two numbers appearing in the same two columns or rows. For example, if the numbers “4” and “7” appear in the same two columns in two different rows, you can be sure that the corresponding empty cells in those two rows must contain the numbers four and seven.
With practice and patience, solving sudoku puzzles can become second nature. There is no one right way to solve a puzzle, but as long as you use logic and stay organized you will eventually be able to solve even the toughest sudoku puzzles. So give it a try and have some fun!

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