Blink, and you'll miss it: Chinese boy solves a 2x2 Rubik’s Cube in 0.39 seconds, sets a new world record

If someone says they solved a Rubik’s Cube in under half a second, you’d probably think they’re joking. That’s less time than it takes to blink, sneeze, or even realize you’re holding the puzzle.But Ziyu Ye, a young speedcuber from China, actually did it. He solved a 2x2 Rubik’s Cube, which is sometimes called a “Pocket Cube,” in just 0.39 seconds, breaking the world record and becoming the first person ever to crack the 0.4-second mark.Everybody, from cubers, math nerds, to just about anyone online, is wondering the same thing: How does someone solve a puzzle in less time than it takes to process what’s happening in front of them?Here’s how: a mix of endless practice, insane pattern recognition, lightning-fast reflexes, and just a pinch of luck.

The world record that didn’t take a second

Nine-year-old Chinese speedcuber Ziyu Ye set the record at the Hefei Open 2025 in Anhui, China, on October 25, 2025. The solve was officially recognized by the World Cube Association and Guinness World Records as the fastest 2x2 solve ever.Now, what’s a 2x2 cube? It’s a stripped-down Rubik’s Cube with only corner pieces — no edges or centers — but don’t let that fool you. There are still millions of possible positions, and solving one requires quick thinking and muscle memory that speedcubers train for years.

But 0.39 seconds? That’s unbelievable, even for top cubers.Just for fun, compare it: a blink takes between 0.1 and 0.4 seconds. A pro baseball player’s reaction time is usually around 0.15 to 0.2 seconds. Ziyu not only saw the pattern but solved it in about the same time it takes most people to notice someone saying “go.”He beat the previous record by four hundredths of a second, which apparently is a huge leap in a sport where records move by tiny slivers.Of course, as soon as the video hit social media, people freaked out. Most thought the clip was sped up. Some joked that maybe the cube solved itself just to get it over with, or that you have to watch the footage frame-by-frame to even spot the moves.Even fellow speedcubers were stunned. Pulling off a 0.39-second solve isn’t just about raw speed; it needs a super-lucky scramble that can be solved with almost no moves, and the solver has to be ready for it, hands and brain working as one.Now, there’s a bigger and more interesting story here. China has totally taken over the speedcubing scene lately. Names like Xuanyi Geng and Yiheng Wang come up again and again as record-breakers. Ziyu Ye’s latest feat just adds to China’s reputation as a global powerhouse in cubing.What’s particularly fascinating is how speedcubing blends math, memory, dexterity, and nerves of steel. Cubers don’t just solve the thing from scratch — they spot patterns instantly and snap through super-efficient sequences they’ve memorized.

After years of practice, their fingers and brains move faster together than most people can even see.And to be absolutely honest, it’s a little ridiculous. The Rubik’s Cube started out as a teaching tool in the ‘70s, and now the competition is so fierce that we’re talking about fractions of a second — it’s too fast for the naked eye.

Is this record beatable?

What’s even more mind-boggling? Robots are even quicker at it. Students at Purdue built a robot that solved a cube in just 0.103 seconds, but it feels different when a human does it.

A robot is just following instructions. Humans pull this stuff off with real practice and, sometimes, a little bit of magic.However, for now, Ziyu Ye’s 0.39-second solve is the official world record. Will it last? No one knows. If history’s any guide, someone’s probably already out there trying to shave off a few more hundredths of a second.So, that’s the strangest part. A few generations back, solving a Rubik’s Cube at all was a big deal. These days, cubers argue over whether 0.39 is beatable.At this rate, someone’s going to have it solved before you even finish saying, “Ready, set, go.”