Every Sudoku has a unique solution that can be reached logically without guessing Fill in the grid such that every row, column, and 3x3 box contains all of the digits from 1 to 9Check the grid for a row, column of block which is made of a few complete cages and a cell that is a part of another cage This way by subtracting the cages values from 45, you'll know what's inside that empty cell! Simon takes a look at a puzzle requested by one of our viewers It is a nice challenge, particularly towards the end when a hidden triple is important
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