Challenge yourself at home with word and number puzzles The fourth instalment of the successful Times Killer Su Doku series. Adding the challenge of arithmetic and taking Su Doku to a new deadly level of difficulty. The puzzles use the same 9x9 grid as normal Su Doku but with an added mathmatical challenge. The aim is not only to complete every row, column and cube so that it contains the digits 1-9, it is also necessary to ensure that the outlined...
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