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Odd/Even Sudoku marks cells as “odd” (1,3,5,7,9) or “even” (2,4,6,8)—what’s the trickiest odd/even Sudoku you solved (few number clues, or overlapping odd/even rules), and how did you use parity to narrow candidates? Did you ever fill all even cells first to unlock the grid, and what’s the most parity-focused Sudoku moment you had?
Posted : September 21, 2025 8:26 pm