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?
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Thank you very much, tootone.
All credit for the graphics goes to Federico Kereki, who converted my word doc into xhtml.
Here, I would like to thank him for all his hard work.