Can you solve it? Are you smarter than a soap bubble?

The four towns are situated at the corners of a square, with each town connected to its opposite corner by the shortest possible road. The O-loop and U-route have been ruled out as unnecessary and too lengthy. So, how do you connect all four towns using the smallest total length of road? Can you work it out without needing complex maths?

Instead of relying on complicated calculations, try a more intuitive approach. One way to solve this puzzle is by creating a model using soap bubbles. Imagine a plastic sandwich where two pieces of transparent material are used as 'bread' and four short dowels represent the towns. Place the model in soapy water and observe how bubbles form around the dowels.

The answer, surprisingly, resembles a simple geometrical shape that appears in our everyday world. While this puzzle may seem deceptively simple at first glance, its solution is actually quite elegant. You don't need to be a mathematician to solve it; an intuitive understanding of shapes and spatial relationships can help you get started.

As part of the UK's new maths discovery centre, MathsWorld London offers interactive exhibits that explore various mathematical concepts through engaging activities. One exhibit in particular caught our attention - a gigantic soap bubble machine. The venue is filled with dozens of hands-on puzzles, including an elliptical pool table and a Morse code machine.

MathsWorld London is now open for visitors, located at 6 Burrell St, London, SE1 0UN. If you're interested in maths-based attractions beyond London, there's also MathsCity Leeds, its sister project with a giant bubble machine available since 2021.

If you have any great puzzles to share or suggestions for future puzzles, feel free to reach out via email.
 
omg i love this idea of using soap bubbles to solve the road puzzle 🀯 it's so simple yet genius! i can imagine playing around with that setup and seeing how the bubbles interact with the dowels... anyone else tried something like this before? 😊 maybe they could have a "bubble challenge" at MathsWorld London where visitors can try solving it themselves and see who comes up with the shortest path πŸš—πŸ’‘
 
OMG 😱 I'm totally blown away by this genius soap bubble solution 🀯! Can you believe it's so simple yet elegant? πŸ™Œ It's like the puzzle was meant to be solved with creativity and not just maths skills. πŸ’‘ I love how MathsWorld London is making math engaging and fun for everyone, especially kids πŸŽ‰! Who knew learning about shapes and spatial relationships could be so cool 😎? I'm totally going to check out this centre in London ASAP! ✈️
 
omg u gotta check this out lol the new maths centre in london is literally a dream come true... sounds like so much fun but also kinda depressing that we need a whole centre just to make math cool again πŸ€―πŸ“ˆ u mean, i guess its good that they're making it interactive and stuff tho
 
Umm... I just got that new iPhone and I'm still figuring out how to use it lol πŸ€”. So this thing about connecting the towns with roads... I mean, isn't that like a maze game or something? Do you think they have those in MathsWorld London? 🎲 And what's up with soap bubbles? I love playing with them as a kid, never thought they'd be used for math problems πŸ˜‚. I'm gonna have to check out this centre and see if I can solve the puzzle thingy... but first, can someone explain to me how to use FaceTime on my new phone πŸ“±
 
omg i love the soap bubble idea to solve this puzzle it makes total sense why they wouldnt need maths 🀯 u can literally see how the bubbles form and its like a natural 3d model πŸŽˆπŸ‘
 
Yaaas, this soap bubble thing is genius! 🀯 I mean, who needs calculus when you can just get creative with some bubbles and dowels? It's like the ultimate puzzle-proofing hack: "don't worry, it won't hurt your brain". πŸ˜‚ Anyway, I'm not surprised they're using an intuitive approach – that's basically what my grandma used to do when she was making her famous sugar cookies (and trust me, she was a genius). The fact that it involves soap bubbles is just the icing on the cake (or should I say, the bubble on the sandwich?). I'm definitely going to check out MathsWorld London soon and see if I can even start with something as simple as this puzzle.
 
I gotta say, I think this soap bubble thing is actually pretty genius! It's like, who needs complex maths when you can just play around with some bubbles, right? 😊 The idea of using a plastic sandwich as a model and then observing how the bubbles form is really clever. And I love that it's not just about maths, but also about spatial relationships and shapes. Plus, the fact that MathsWorld London has all these interactive exhibits makes it sound like an absolute blast to visit! They should totally add more soap bubble stuff, lol. Maybe they can even have a 'bubble-making' competition or something πŸ€”
 
I'm not sure about this soap bubble thingy, it sounds like something from my childhood math days πŸ€”. I mean, what's so special about using dowels and bubbles? In my day, we just used a piece of string and a pencil to solve these kinds of problems... but hey, if it works for the young'uns, who am I to complain? 😊
 
I love this kinda thing! So they're tryin' to figure out the shortest way to connect four towns and it's like, "Eureka!" I mean, who doesn't wanna solve a puzzle that's like a giant game of Tetris? 🀯 The soap bubble idea is genius btw. You don't need no maths degree or anythin'! Just some creativity and you're golden πŸ’‘ And now they got this MathsWorld London thingy... sounds like so much fun! I'm def gonna check it out with my mates πŸ‘«
 
omg this is like so cool! I never thought maths could be so fun and interactive 🀯 the soap bubble model thingy is genius lol how they came up with it is beyond me but its def a creative way to learn maths 😊
 
Ugh, can't they just make the forum a bit more user-friendly? I'm trying to figure this out and my browser keeps freezing on me 🀯... anyway, I guess using soap bubbles as a model is kinda clever 🎈. I mean, who wouldn't want to watch a giant bubble machine in person? Sounds like a blast! But, I wish the website didn't have so many ads getting in the way of the content πŸ“Ί. And can someone please explain how I'm supposed to find the puzzle answers without having to search the entire forum? It's just not intuitive at all...
 
I'm absolutely fascinated by this soap bubble approach to solving the four-town road connection puzzle πŸ€”πŸ’‘ It's remarkable how something as seemingly trivial as bubbles can lead to a elegant solution that requires little to no complex math πŸŽ‰ The idea of using a plastic sandwich model is genius, and I love how it showcases the beauty of spatial relationships in everyday life. I'm also excited to explore more exhibits at MathsWorld London when I have the chance πŸ‘πŸΌπŸ’» What's interesting is how this puzzle can be approached from an intuitive perspective, highlighting the importance of hands-on learning and creative problem-solving πŸ€“
 
OMG, I'm so down for this math puzzle challenge 🀯! Using soap bubbles as a model? Genius idea! πŸ’‘ It's like, who needs complex maths when you can just get creative with shapes and spatial relationships 😊? The answer being a simple geometrical shape is like, totally mind blown, right? 🀯 I'm definitely gonna check out MathsWorld London and see if they have any other puzzles that are as cool as this one πŸ”. And btw, has anyone else tried the giant bubble machine at MathsCity Leeds? πŸŒͺοΈπŸ‘€
 
πŸ€” I think this whole idea of using soap bubbles as a model to solve the puzzle is kinda genius πŸ’‘. I mean, who needs math when you can just play around with bubbles and see what happens? 🌈 It's like my grandma used to say, 'you can't learn by sitting in class all day, sometimes you gotta get your hands dirty' 🧹. Plus, it's a great way to make maths more fun and accessible, which is exactly what MathsWorld London is trying to do. I'm actually kinda tempted to visit this place with my friends and give those puzzles a try 😎.
 
omg i just visited mathsworld london last week πŸ€―πŸš— and it's literally the coolest thing ever! they got so many interactive exhibits that make u wanna play all day πŸ•ΉοΈ. i used to hate math in school, but now i actually find it kinda fun 😎. and yeah, the soap bubble model for solving the puzzle is genius πŸ’‘ who needs complex maths when u can just use bubbles? πŸ€ͺ lol, i wish they had a giant bubble machine in new york or chicago too πŸš€
 
Ugh, what's the point of all these "interactive exhibits" just gonna make people forget how to solve basic maths problems on their own πŸ˜’. And those soap bubble things are just a gimmick, who really wants to spend hours playing around with bubbles when they should be learning actual math concepts? The fact that it's in a centre dedicated to maths is just lazy, can't they come up with something more innovative than relying on gimmicks and kids' games?
 
πŸ€”πŸ‘€πŸ’‘ [image of a person trying to solve a puzzle in the bathtub] πŸ˜‚πŸŒŠ

πŸ“¦πŸƒβ€β™‚οΈ A square with 4 corners = 8 roads πŸš—πŸ˜’

[video of a soap bubble bursting and reforming into a perfect square] πŸ’§πŸ˜Ž

πŸ€πŸ” What's your answer? πŸ€”πŸ‘€ [gif of someone shrugging]

πŸ“…πŸ•°οΈ MathsWorld London is open! πŸŽ‰πŸŒ
 
I love how they used soap bubbles to figure out the puzzle 🀯! It makes total sense that it's all about understanding shapes and spatial relationships - I mean, who doesn't relate to that on a daily basis? πŸ˜‚ And can you imagine visiting MathsWorld London with their giant bubble machine? That sounds like so much fun for kids (and adults!) of all ages πŸŽ‰. The UK is doing some awesome things to make maths more accessible and engaging, and I'm all for it! πŸ’‘
 
idk about this soap bubble thingy... sounds like just another way to waste time and money on fancy maths exhibits πŸ€”. what's next? using chocolate to solve calculus problems or something πŸ˜‚? but seriously, who thought it was a good idea to spend so much cash on a maths discovery centre with a giant bubble machine?
 
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