People have been stewing over the correct answer to a coffee-themed puzzle.
A Twitter user shared the logic quiz, in which coffee is poured into a network of pipes leading to four different cups, on Thursday.
You have to figure out which of the cups will receive coffee first:
The brainteaser sparked plenty of debate:
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Some people answered correctly, but many appeared to miss one key point.
Warning: the answer is about to be revealed.
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A closer look at the pipes shows that the coffee will actually end up in only one cup ― number 5. That’s because the pathways to the other three cups are all sealed off, as another Twitter user illustrated here:
Bravo to all those who nailed the challenge on their own.