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    $\begingroup$ Are you trying to make us type sqrt(16) into our scientific calculators -- and then feel silly about it? :) $\endgroup$ Commented Oct 27, 2017 at 12:56
  • $\begingroup$ That would be one of several acceptable outcomes :-). $\endgroup$ Commented Oct 27, 2017 at 12:57
  • $\begingroup$ I knew I should have started with a harder version. And you didn't even need the clues I gave in the question, it looks like! (Did you even see them?) Maybe I should post one of my subsequent revisions. Nicely done! $\endgroup$ Commented Oct 27, 2017 at 15:20
  • $\begingroup$ And you're right about the transcription error. I did the rotations by hand on paper, so I must have miscounted. $\endgroup$ Commented Oct 27, 2017 at 15:21
  • $\begingroup$ I'm sorry to say I didn't spot any clues in the question. In fact, I still don't, though I do see a few oddly phrased portions of the question that might hold some secrets. $\endgroup$ Commented Oct 27, 2017 at 16:29