That’s one baffling brew! Coffee puzzle leaves Twitter totally stumped – so can you work out which cup would be filled up first?

The brainteaser, which was shared on Twitter by user @Purp, shows a pot of coffee being poured into a funnel connected to a maze of pipes that lead to four different cups. Which will fill up first?

A baffling puzzle posted on Twitter has left the web stumped, as viewers struggle to determine the correct answer.

The brainteaser, which was shared on by Twitter user @Purp, shows a pot of coffee being poured into a sketch of different pipes, which collectively lead to four coffee mugs.

The puzzle asks users to figure out which of the coffee mugs the liquid will reach first – and it’s harder than it first appears.

Scroll down for video

A new brainteaser that’s sweeping social media shows a funnel of coffee being poured into different pipes leading to four coffee mugs and asks users to figure out which cup will receive the coffee first

The user who uploaded it told her followers: ‘Let’s see whose brain is working’. It was quickly shared thousands of times as users argued over the right answer.

While many people concluded that all four cups would receive the coffee at the same time, user @Purp encouraged them to ‘look closely’.

The person who posted it asked her users ‘let’s see whose brain is working’ and she received thousands of responses from baffled users

Her followers continued to guess which cup would receive the coffee and she kept telling them to pay attention because the answer was ‘right there’.

The correct answer? Cup five. Why? Because all the funnels leading to the other mugs are blocked.

Once the poster had pointed that out to her followers, they were amazed how long it took them to notice that detail.

Her followers continued to guess which cup would receive the coffee and she kept telling them to ‘look closely’ because the answer was ‘right there’