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comment by possessedcow
possessedcow  ·  4378 days ago  ·  link  ·    ·  parent  ·  post: [pdf] The Hardest Logic Puzzle Ever

I found the explanation of iff as used in the pdf somewhat confusing. It seemed more intuitive to me to think of it as an XNOR or it returns true if EITHER both inputs are true OR if both inputs are false.

I also think drawing down the truth tables for each condition was helpful but I still don't completely get it. That was a pretty damn hard math problem.