⚠️ Spoiler alert
This article reveals the solution secrets and mechanisms of the FunLock puzzle. If you have not yet solved it and want to go in completely blind, stop here and come back after you crack it.
When you hand someone a lock and a key, their brain immediately runs a script. They locate the keyway, align the teeth, and slide it in the way they have done thousands of times before.
In the world of mechanical puzzles, that automatic script is your worst enemy.
That is the core idea behind the FunLock. And it is why the people who struggle with it most are not beginners. They are the ones who think they already know how locks work.
😄 Standing on the Shoulders of a Classic
The FunLock's DNA traces back to my father's legendary TRIP puzzle. If you want to understand where the core mechanism comes from, Kevin Sadler wrote a wonderful piece about it here.
FunLock shares that ingenious core mechanism but adds a fresh spin by turning the experience into a two-stage puzzle.
The first hurdle is not even the lock itself. It is the ring holding the key. That ring is a real product, manufactured in the USA, and it is a puzzle in its own right. The idea to incorporate it came from Shane Hales, another prominent lock puzzle designer. Because figuring out how to open the ring is already a challenge, it becomes the perfect first stage. You have to earn the key before you can even attempt the lock.
🧠 The Beginner's Trap
In the puzzle community, FunLock is generally considered easy or beginner-friendly. It does not require dozens of complex micro-movements or hidden tools.
And yet it routinely stumps people who pride themselves on logic and analytical thinking.
The more experience someone has with locks, the harder it tends to be for them.
👶 Why Kids Leave Adults in the Dust
The most fascinating thing about FunLock is this: children tend to solve it significantly faster than adults.
Not because children have superior spatial reasoning. But because they have zero cognitive bias.
Grown-ups know the right way to insert a key. We have decades of muscle memory and fixed ideas telling us exactly how a lock operates. When an adult holds the FunLock key, they automatically align it to what looks like the traditional orientation. If it does not turn, they assume they need to push harder, pull back slightly, or find a hidden button.
Children approach the object with no expectations at all. They are not afraid to try things that seem wrong. Inserting the key completely backward. Upside down. Sideways. They just try everything without prejudice, and they stumble onto the solution while the adults are still overthinking it.
I have watched this happen more times than I can count. It never stops being funny.
💡 A Tool for Creative Thinking
Because FunLock illustrates our cognitive blind spots so perfectly, it has found a life outside of traditional puzzle collections.
There are lecturers on creative thinking who have used it to demonstrate how fixed our minds become as we age. It is a tangible, hands-on metaphor for thinking outside the box — something you can feel in your hands rather than just hear about in a presentation.
It has also appeared in escape rooms, where players have to quickly unlearn their daily habits to succeed.
FunLock proves that sometimes the biggest barrier to solving a problem is the knowledge we think we already have. To open it, you do not need a degree in engineering. You just need to look at the world through the eyes of a child.
Boaz Feldman
Want to try the FunLock for yourself, or give it as a gift?
Not sure which puzzle is right for you or the person you are buying for? Our buyer's guide covers the full collection: