対角線ナンプレ むずかしい No.257

Every column, row and bold 3×3 box, and each of the 2 coloured diagonals, holds each digit 1 to 9 once.

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Diagonal Sudoku Hard No.257puzzlelounge.app/nanpure

Every column, row and bold 3×3 box, and each of the 2 coloured diagonals, holds each digit 1 to 9 once.

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Answer to Diagonal Sudoku Hard No.257

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