Two people dead in drink-off: clever lateral thinking puzzle exposes tragic mistake.
The Queen's plan was straightforward: Smith and Jones, the only poison manufacturers, would each bring a vial of their own poison to a ceremony. They'd drink from each other's vials first, followed by their own, and be watched for an hour. The strongest poison would guarantee survival. But what went wrong?
It turned out both competitors had been playing it too cautious. In their desperation to survive, Smith and Jones decided to trick the Queen into giving them a way out. They brought weak poisons – in this case water – instead of strong ones, hoping to drink each other's stronger poison as an antidote, thereby saving themselves.
However, each person thought the other wouldn't take this risk, so they both ended up drinking water before it was their turn to drink from each other and then their own vials. When they drank the Queen's poisonous wine, it proved too much for them, causing them to die within an hour.
The puzzle mastermind behind this brain teaser is Michael Rabin, created in the 1980s. It has recently gained attention through Timothy Chow of Princeton University's Centre for Communications Research.
The Queen's plan was straightforward: Smith and Jones, the only poison manufacturers, would each bring a vial of their own poison to a ceremony. They'd drink from each other's vials first, followed by their own, and be watched for an hour. The strongest poison would guarantee survival. But what went wrong?
It turned out both competitors had been playing it too cautious. In their desperation to survive, Smith and Jones decided to trick the Queen into giving them a way out. They brought weak poisons – in this case water – instead of strong ones, hoping to drink each other's stronger poison as an antidote, thereby saving themselves.
However, each person thought the other wouldn't take this risk, so they both ended up drinking water before it was their turn to drink from each other and then their own vials. When they drank the Queen's poisonous wine, it proved too much for them, causing them to die within an hour.
The puzzle mastermind behind this brain teaser is Michael Rabin, created in the 1980s. It has recently gained attention through Timothy Chow of Princeton University's Centre for Communications Research.