Description
Deviating from convention, this “shutter” style lock moves away from the traditional U-shaped shackle in favor of a sleek, cylindrical bolt. While it includes a key, a simple turn will only get you so far. Solving this puzzle requires a blend of patience and keen observation to navigate its internal logic.
With a medium difficulty rating, it offers a fresh, approachable challenge for enthusiasts and collectors alike. Not suitable for children.
The first 200 copies made are stamped with a unique consecutive serial number.






Michael Quigley (verified owner) –
Another amazing lock from Andrew Coles, that is elegant, clever and unique. A must have lock for every puzzler.
goetz (verified owner) –
An excellent puzzle lock! This one has more to discover than the first one, but I am not sure which one has the more surprising tricks. These two locks are quite different and I like the solution of this even better, and I am looking forward to what will come as the next puzzle lock!
dominickendrick (verified owner) –
Really enjoyed the second puzzle from Andrew. Some great “ah ha” moments, with a satisfying solution! Can’t wait to see what’s next.
pinguinxxx (verified owner) –
Excellent! Took a lot of thought and playing with it to arrive at the “aha!” moment, very fresh solution!
gsyriaque (verified owner) –
Incredibly fun puzzle lock! I look forward to future releases
Eckkinder (verified owner) –
Interesting idea, very entertaining in it’s execution and something I have never seen in any kind of mechanical puzzle I own.
williamja3435 (verified owner) –
Fantastic design executed well. Very satisfying, kinetic solution that was fairly achieved with careful observation and thought. Absolutely loved it.
Robb8765 (verified owner) –
I am also a big fan of Mind the Gap. A nice step forward in innovative mechanisms and aha-moments. Again I enjoyed this lock puzzle very very much. Very curious for your new designs!