Killer sudoku is similar to the other levels in that each of the numbers 1-9 must fit into each 9-by-9 square. No number can ...

Due to data protection, the national authorities will not supply the name and address corresponding to a VAT number. They will only confirm if there is a certain name and address associated with a ...

I go out and pick up my morning paper as usual, come back in, get my coffee and set down at kitchen table and read through the articles that catch […] ...

Each 9-by-9 square has to include the numbers 1-9. But you can’t repeat any individual number in the same 9-by-9 square or on the same line, whether it’s vertical or horizontal. Killer sudoku is ...