Hi fyva, great extension!

It would be even better if a cell in the Puzzle sheet, which becomes visible only when you finish and found the right answer, was included.

I would make it with conditional format on a cell which sums the differences between the Puzzle and the Solution Sheet. Or else, I would include a button in order to check the answer.

I hope this can help. I'm new at Open Office and this is the first extension I downloaded.

Best regards.

dahz