Sudoku 9×9 Medium — Set 72

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                "question": "Complete the sudoku grid (6x6): each row, column, and box must contain each digit exactly once. Grid: [4 _ 1 2 | _ 2 _ _ | _ _ 4 3 | 3 4 _ _]",
                "answer": "4 3 1 2 | 1 2 3 4 | 2 1 4 3 | 3 4 2 1",
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    "_archetype": "guided-solver",
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