It took me a little longer to construct, because I wanted to use this nice diamond-shaped pattern.
You need every trick in the book to solve it. While testing it I encountered subsets, X-Wings, colouring, finned fish and other horrible creatures... but it does have a unique solution, at least the complete puzzle does. Solving each of the individual puzzles without looking at the complete puzzle gives you exactly 1 clue to the 10th puzzle!
Please give us some feedback about the time it took you to solve it, so we can all have a laugh
Enjoy,
Ruud.