The numbers 1 to 9 are to appear once in every row, column, long diagonal, 3x3 grid and irregular shape. Light cells are odd; darker cells are even. From the starters given, can you finish the puzzle?
(In reply to Diagonals
When my puzzle was in the queue, awaiting approval, one of our Journeymen announced that it had four solutions.
After I asked him whether he had considered the constraint of the two long diagonals, he admitted that he had missed it. He then declared that the solution was unique and gave it the TU.
If you can find a different solution, where the numbers 1 to 9 appear in both of the main diagonals, please will you show it to me?