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Color-coded Sudoku adds extra regions (e.g., colored shapes) with no repeats—what’s the trickiest color-region Sudoku you solved (overlapping color/3x3 rules, or odd-shaped regions), and how did you prioritize constraints? Did you ever use color to spot hidden pairs, and what’s the most layered Sudoku solve moment you had?
Posted : September 21, 2025 6:48 pm