Author Rodney L. Wagner proudly presents his amazing book, "Rod's Sudoku Tutorial." Beside him is his supportive wife, Sharon. “Rod’s Sudoku Tutorial” by Rodney L. Wagner was displayed at the 2023 Los ...
def find_next_empty(puzzle): #finds the next row, col on the puzzle that is not filled ---> -1 #return row, col tuple (or(None,None) if there is none) for r in range(9): for c in range(9): if puzzle[r ...
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