![]() I assure you that you can easily solve this diagonal sudoku puzzle in no time. Try using the combined rules of the standard sudoku and the diagonal rule as explained above to finish this puzzle. Which only leaves us number 5 to be placed in R4C6. It is also not applicable in R6C4 because 5 is already given in row 6 and also not in R5C5 because 5 is already given in row 5. Similarly, in each of the 9 large squares, every number from 1 to 9 must appear. Pay attention to the numbers in the large squares. That means that within a row or column, a number cannot repeat. Number 5 cannot be in R7C2 because 5 is already present in that region. One basic rule of the game is every column and row must have all of the numbers from 1 to 9. Focusing on the diagonal line slanted up to the right (/), we know that numbers 1-9 will appear exactly once in that diagonal line. So, weare only left with 8 to be placed in R7C2.Īnother clue using the diagonal rule, look at the numbers and lines highlighted in pink. It is also not applicable in R8C3 because 8 is already given in row 3. Why? Because if you look at that diagonal line, there is already number 8, therefore 8 cannot be placed in R8C2. In region 6, number 8 is only possible in R7C2. Now focus on numbers and lines highlighted in blue. While solving the sudoku puzzle you can only use each number one time in the square, column, and row. As people progress through a career, they tend to specialize and spend their days becoming experts in a narrow range of expertise. The objective of Sudoku is to fill a 9x9 grid made of squares (shown above circled in blue) so that each row, each column, and each full 9x9 square use the numbers 1-9. Therefore, by using the fourth rule that says the numbers 1-9 will appear exactly once in the diagonal line, 3 is the missing number in Row 1 Column 9 (R1C9) cell. Sudoku promotes logic, deduction and problem solving One of the challenges of being an adult is that it often seems we spend more and more time thinking about the same types of problems. Looking at the diagonal, you can see that 2 and 9 are already given. In region 3 of the puzzle, the only missing numbers are 2, 3, and 9. Look at those that are highlighted in green.
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