Einstein is universally known as one of the greatest scientists in history. Think like the father of relativity himself as you ponder over puzzles, enigmas, quizzes and logic trials based on and inspired by Einstein's works. You'll come across the Theory of Relativity, E=mc2, Brownian Motion, cosmology, quantum theory, wormholes, the laws of thermodynamics, zero-point gravity and many more groundbreaking ideas, all woven together to create some of the best puzzles ever. Packed together with a selection of Einstein's wisest quotes, The Relatively Difficult Puzzle Universe is perfect for anyone who wants to see if they compare to the genius physicist. As the great man once said: 'You have to learn the rules of the game. And then you have to play better than anyone else' - a challenge that all puzzle enthusiasts will recognize and find irresistible.