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Sudoku’s Swordfish pattern uses 6 cells across 3 rows/columns to eliminate numbers—what’s the trickiest Swordfish you applied (hidden in dense mid-game grids, or overlapping with other patterns), and how did you verify the 3-row/3-column alignment? Did you ever use Swordfish to break a 20-minute grid stuck, and what’s the most satisfying advanced logic moment you had?
Posted : September 21, 2025 6:54 pm