What a well-written sudoku puzzle never requires you to do

Question:

Answer:

GUESS

Length:

Similar Crossword Questions:

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First word across in the first-ever crossword (1913) and the first of a dozen appearances of the word in this puzzle's grid, written word search-style (left, right, down, and diagonally) ... Can you f
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Publication founded in 1952 featuring artwork that does the same thing as this puzzle
Feature of this puzzle's theme answers?
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