Everything about universal crossword puzzle - universal crossword

Ready to take on a monster? This colossal Sudoku challenge will not be for that feint of coronary heart! Clear up the puzzle so that every 4x4 box within the gigantic 16x16 grid includes the quantities 0-9 and letters A-File.Sudoku X is Sudoku that has a twist - the X throughout the middle from the puzzle can't have any recurring numbers!Fill in ju

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