Nevertheless, this problem has continued to puzzle mathematicians for ... These are some of the hardest math problems in the ...

Some of the hardest puzzles in Silent Hill 2 require a deep knowledge of poem structure, pathing, and math, and it all adds ...

In honor of National Puzzle Day, we wanted to explore the people behind one of the world's hardest puzzles. Watch the video of Valk's winning moves below: In all fairness though, Feliks Zemdegs ...