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Poisoned Wine Bottles
This Hard puzzle in the “logic” category rewards careful reading and step-by-step reasoning. Use the hint if you are stuck, then compare your approach with the explained answer.
You have 1000 bottles of wine. Exactly one bottle is poisoned.
You also have 10 test subjects. If a subject drinks poison, they die exactly 24 hours later.
You may run only one round of testing. In other words, you can give wine to the subjects only once, wait 24 hours, and then observe who survives.
How can you determine exactly which bottle is poisoned?
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