+ W N O 1 U1 - NA >>> type (b3) >>> check_sdk(make_board(b3) ) Bad row(s) : 7 8 9 Bad column (s) : 4 5 6 7 Bad square(s) : (7, 4) (7, 7) Implementation notes: . The zip you download from D2L will include make_board . py, which has code for the make_board function. Copy the code for make_board into your a4 . py. . My check_sdk function uses three helper functions: check_rows, check_squares, and check_19. check_squares is very much like the partial checker we worked on in class. check_19 is a boolean function that returns True iff an array contains exactly the integers from one through nine. I was about to write a check_cols function, too, but then I realized that check_rows could be called twice, once to check rows and then again to check columns. (Think about it!) . I really should have cast this problem as a Board class with a check method but that didn't cross my mind until it was too late. However, it would surely be good practice for the first mid-term to do that on your own