Killer Sudoku – Hard
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About Killer Sudoku
This Sudoku variant is called Killer Sudoku – also known as “Sums Sudoku”, “Sums Number Place”, “Samunamupure” or “Kikagaku Nampure”. The cells are grouped into small areas, each with a number. This indicates the sum of the numbers in that area. Beyond that, the same rules apply as in a classic Sudoku.