Sudoku medium difficulty help - Puzzling Stack Exchange

I keep getting stuck on the NY Times Sudoku medium difficulty puzzles. I go through one number at a time and narrow down large box where that number can only be in two spaces. When I finish the nin

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Sudoku medium difficulty help - Puzzling Stack Exchange

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How do they make Sudoku 'easy', 'medium', or 'hard'? Is it not just how many squares are revealed? - Quora

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How do they make Sudoku 'easy', 'medium', or 'hard'? Is it not just how many squares are revealed? - Quora

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