Astronomy experiments could soon test an idea developed by Albert Einstein almost exactly a century ago, scientists say. Tests using advanced technology could resolve a longstanding puzzle over what ...

A killer game of hide and seek.

All the Latest Game Footage and Images from Einsteins Riddle A pure, simple game of logic and deduction. Random generated puzzles enables unlimited replay. Custom board layouts let you adjust the ...

You don't need to be well-versed in quantum physics or even complex math to solve Albert Einstein 's famous house riddle. All it takes to tackle the problem below is logic—and if that isn't enough for ...

Einstein called it “spooky action at a distance,” but today quantum entanglement is poised to revolutionize technology from computers to cryptography. Physicists have gradually become convinced that ...

From fiendishly difficult riddles to a Sudoku unsolvable to all but the sharpest of minds, we've rounded up some of the world's toughest conundrums to celebrate National Puzzle Day. Unsure how to ...