Sudoku (数独)is a logic-based,combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution. But this is a Product Sudoku not a basic Sudoku.
The rules:
Fill in the blanks with number 1~9 so that the numbers in each row, column, and region are not duplicated. The prompt indicates the product of the numbers in both sides of the grid.
规则:
在空格内填入数字1～9，使得每行、每列及每个区域内数字均不重复，提示数表示两侧格子内数字的乘积。
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