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Poisoned Chocolate Bars
This Medium 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 8 chocolate bars, and exactly 1 is poisoned.
You also have 2 testers.
If a tester eats any amount of poisoned chocolate, they will become sick exactly one hour later.
You may run only one round of testing.
Can you determine exactly which chocolate bar is poisoned?
Preparing…