LEARN Step By Step TO SolvE a Puzzle

Let’s start with a nice easy puzzle made up with 4 mini-grids of 4 squares each.

To do this Sudoku you must make every column, row and mini-grid contain
the numbers 1, 2, 3 and 4 - one of each. There is only one way to finish each puzzle, and if you think carefully you will be able to work out the answer

Let’s start by looking at the third column.
We already have the numbers 1 and 2 in that column, so we need to replace the two question-marks with a 3 and a 4. We can’t put a 3 in the top square because there is already a 3 in that row (highlighted in yellow). So the top square must be a 4, and the next square must be a 3. That’s a good start!

 

 

Now we need to work out what goes in the top corner.
If you look across the top row, you will quickly see that you need to fill that square with a 2.

 

 

 

What next? .
We need to replace the question marks with a 3 and a 4. If you look along the bottom row you will see a 3, so the bottom question-mark MUST be the 4. Once we know that, it is easy to see that the bottom left corner should be a 2, so I will fill that in as well.

 

 

You're nearly finished..
Remember that each mini-grid must have the numbers 1, 2, 3 and 4 in them too. Can you see that each of the question-marks in this Sudoku now have to be replaced by 1.

There are now only 2 empty squares left, and you can easily see that they should both have a 4. You have done your first Sudoku!

 

Click here to learn to solve a full size 9x9 sudoku puzzle