Ken's Puzzle of the Week
Sums with 1 to 9
Place all of the digits 1-9 into the white boxes and one of the symbols (+ or -) into each
of the gray boxes such that:
- Each of the six rows and columns have the same sum (other than 15).
There's definitely a solution with a common sum of 5. Are there others?
- The sum of each row or column is equal to the noted number in its first square.
For example, the third column will have a sum of 4, and the first row and column will both
have a sum of 1.
Source: Original. [Thanks to Mark Rickert for updating part 2 to a solvable
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