#22 Even rows
Set by Peter Rowlett
Fill in the numbers 1-16 once each in a four-by-four grid so that the sum of the numbers on the top row is even and the numbers on the bottom row sum to a different even number.
For example, if we arrange the square so that the numbers across the top row are 1, 2, 3 and 4, they will sum to an even number, 10.
Can you find a solution where all four edges have different sums that are all even?
Can you find a solution where all rows, columns and diagonals…
