Enigmatic Variations 1716 (Hints)
Puzzle by Arcadia
Hints and tips by Phibs
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I gave Claude as much information as I could glean from the preamble: “In a themed crossword puzzle, we are told that we must highlight cells in a block in the completed grid which cryptically represent a puzzle referred to by an entry in the Oxford Dictionary of Quotations. What might this puzzle be?” Good luck with that, matey…