A Sudoku solution method for beginners and advanced users. You need to analyze the 3x3 blocks, knowing the "one digit" rule. For example, we see that the block has 1 free cell, and we have already entered 1, 2, 3, 4, 5, 6, 7, and 8. Therefore, we only need to enter 9.
Similarly, study the columns or rows, remembering the "one digit" rule. If there is 1 free cell left and we have already entered 1, 2, 3, 4, 5, 6, 7 and 8. So all we have to do is enter 9. Done!
The Sudoku technique "Last Free Cell" is considered basic. It is the starting point for beginners. More experienced players use the same technique and combine it with others. Once you have mastered the "Last Free Cell" trick, you can move on to the next ones.
Choose techniques from the selection, combine them with each other and create your own approaches to solving easy Sudoku and hard!