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Puzzles

insights puzzle

Solution: ‘The Slippery Eel of Probability’

August 14, 2015

The solution to this month’s puzzle examines the use of abstract probabilities as an antidote to real-world ignorance.

insights puzzle

The Slippery Eel of Probability

July 30, 2015

How do you solve probability problems that appear to have more than one correct answer?

insights puzzle

Solution: ‘Information From Randomness?’

July 22, 2015

The counterintuitive solution to this month’s puzzle raises philosophical questions about randomness and information.

insights puzzle

Can Information Rise From Randomness?

July 7, 2015

Quanta’s new puzzle column asks you to believe the seemingly impossible — that you can win at a number guessing game with absolutely no information.

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The Nine Schoolgirls Challenge

June 9, 2015

Solve this variation of Thomas Kirkman’s famous 1850 puzzle by arranging girls in walking groups. And think fast — the clock is ticking.