Sorry, due to Black Friday all deliveries will take 5-7 days. Excludes selected Partners.
We are currently experiencing high demand. If you choose Click+Collect or Standard delivery, please allow 5-7 days for your order to arrive. Express delivery is currently unavailable for Tesco products.
Selected Partners will continue to offer Express Delivery and 2-5 day Standard Delivery; where available, you will be able to select these options at checkout.
Riddles, paradoxes, and conundrums have been confusing and confounding people since at least the time of the Ancient Greeks. The eponymous riddle, according to legend, was devised by Albert Einstein as a child. He claimed that only about 2% of the population would be able to work out the correct answer. There are no tricks and there is only one answer. It requires the cool application of logic to solve. And a lot of patience. Einstein's Riddle features fifty of the toughest logic problems, lateral thinking puzzles, and tests of mental agility. By turns entertaining and infuriating, the puzzles challenge our preconceptions, tell us about how we reason, and provide a rigorous intellectual workout.
Jeremy Stangroom has a Ph.D. from the London School of Economics. He is currently the New Media editor of The Philosopher's Magazine, which he founded with Julian Baggini in 1997. He is the authoreditor of numerous books, including The Little Book of Big Ideas: Philosophy and The Little Book of Big Ideas: Religion. He is also series editor, with James Garvey, of Continuum Books' major new series on Contemporary Social Issues. Stangroom is an elected fellow the Committee for the Scientific Examination of Religion.