Missing pieces!!

This is a beautiful and challenging puzzle. Sadly, when we got just two pieces away from completing it, we discovered that two pieces were missing. Two other pieces were duplicates. Reading the reviews, I discovered that this seems to be a problem with this puzzle. I returned it for a full refund. It is very frustrating to spend hours on a puzzle and not be able to complete it. Also, the pieces are not interlocking, so assembled pieces come apart easily. A shame since this is one of the most beautiful designs of a puzzle we have seen.

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