This is the content of sudoku_0_0-1-py3-none-any.whl. So when the (0,0) cell is 1, none of the cells in the same row, column and subgrid should be 1.

    Requires-Dist: sudoku_0_1 != 1
    Requires-Dist: sudoku_0_2 != 1
    Requires-Dist: sudoku_0_3 != 1
    Requires-Dist: sudoku_0_4 != 1
    Requires-Dist: sudoku_0_5 != 1
    Requires-Dist: sudoku_0_6 != 1
    Requires-Dist: sudoku_0_7 != 1
    Requires-Dist: sudoku_0_8 != 1
    Requires-Dist: sudoku_1_0 != 1
    Requires-Dist: sudoku_2_0 != 1
    Requires-Dist: sudoku_3_0 != 1
    Requires-Dist: sudoku_4_0 != 1
    Requires-Dist: sudoku_5_0 != 1
    Requires-Dist: sudoku_6_0 != 1
    Requires-Dist: sudoku_7_0 != 1
    Requires-Dist: sudoku_8_0 != 1
    Requires-Dist: sudoku_0_1 != 1
    Requires-Dist: sudoku_0_2 != 1
    Requires-Dist: sudoku_1_0 != 1
    Requires-Dist: sudoku_1_1 != 1
    Requires-Dist: sudoku_1_2 != 1
    Requires-Dist: sudoku_2_0 != 1
    Requires-Dist: sudoku_2_1 != 1
    Requires-Dist: sudoku_2_2 != 1