I have a problem with objectively identifying duplicate entries in my challenges, so usually I just don't even try. Some of them are really obvious, but some of them are not. Some solutions are too obfuscated for me to even understand. The moment I start to disqualify some of them, I have to be fair about it.
How can I objectively identify duplicate entries?
I am answering this question myself, but my solution has multiple issues. I hope to get better solutions from the community.