Once you know these Sudoku tips, you will be able to solve even the most challenging puzzle. What are the basic rules of ...

But even the most dedicated Sudoku-solver might have ... for anyone who is struggling to solve some puzzles. 'These equivalent sets can be very useful for hard Sudokus where all the usual methods ...

Yank one into the realm of feasibility and the whole NP edifice collapses, and a scientific revolution rises from the rubble, filled with effortlessly efficient travel, rapid drug discovery via ...

Doing crossword puzzles and Sudoku does ... "Although playing 'brain games' such as Sudoku may not prevent dementia, is has been shown that regularly challenging yourself mentally seems to build ...