Killer Sudoku Girandola - 500 Sudoku Puzzle The objective is to fill the grid with numbers from 1 to 9 in a way that the following conditions are met: - Each row, column, 3x3 box and the nine gray cells contains each number exactly once. - The sum of all numbers in a cage (grouping of cells denoted by a dotted line) must match the small number printed in its corner. - No number appears more than once in a cage. Nr. 1 - 100 = easy Nr. 101 - 200 = medium Nr. 201 - 500 = hard
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