Angel Box
Designed by Will Strijbos
PETG/PLA Version Produced by Gerard of Bayou Puzzles
One of the many (many) wonderful things about the Mechanical Puzzle Discord (MPD) Group is its puzzle library: members are able to borrow some truly amazing puzzles for just the cost of postage (subject to some MPD terms). Puzzlers have generously donated some excellent puzzles to the library, including a printed version of many a puzzler’s unicorn: Angel Box by Wil Strijbos. (Do not confuse this with my recent post on the Red Herring Box, which is not a part of the MPD library despite similarly traveling the puzzling world).


Gerard of Bayou Puzzles, designer and producer of the wonderful sd puzzle, Turtle Trip, was granted permission by Wil to produce two copies of a fully accurate 3D printed PETG / PLA version of Angel Box – I say two copies as one is for the North American MPD library and one for the ROW library (it is worth noting that he also got permission from Juno to produce and sell copies of a printed Slammed Car).
Angel is so true to the original design that it even features the eponymous cherub whose imprisoned state can be viewed through an acrylic window at the front of the box, as in the original. There have been some delays since its release into the puzzling wild due to some needed repairs but, after patiently waiting for a couple years, I finally got my turn.
Angel Baby Atop Puzzle Hamster: A Perfectly Puzzled Picture

All of Wil’s puzzles are quality designs, his sd puzzles perhaps most of all: Lotus and First Box have been known to be responsible for many a nascent puzzler’s initial descent into puzzledom and the 2020 re-release of Pachinko and Revenge Lock released waves of relief amongst the many of us who had been hoping for a chance to obtain copies. Alongside Butterfly, Pachinko, and Revenge Lock, the original Angel Box is a sizable hunk of metal, somewhat imposing in size. The PETG/PLA version is presumably a bit more wieldy but no less of a puzzle for it.
I found that it offers some excellent puzzling without being so difficult as to leave me stuck for weeks on end (as happened with Pachinko and Revenge, for example), favoring elegance over anguish. After solving Butterfly at the former Puzzle Palace a few months back, this is, I think, the last of Wil’s sd/boxes for me to solve (and, weirdly enough, the first for me to write about!). And while it may not have had me laughing at my own brilliance it was nonetheless a darn fun solve at that!

As this was a loaner from the library, I intended on solving it as quickly as possible so that it might get back on the road (ironically the next person in line is the same puzzler who recently sent me Red Herring! It really is a small puzzling world…). I was able to solve it in two focused sittings with a great balance of challenge and fun as I worked my way through the substantial aha! moments sprinkled throughout the solve. There is a great rhythm and flow that gives class to this classic puzzle. A few steps did smack me up against a nice, solid wall, but overcome them I did, albeit with perhaps the grace of a tiny, fat baby with vestigial wings. I will admit that I may have cheated a bit on the starting lock, picking it rather than taking the time to tease out the riddle (I figure I can retroactively solve this without creating delays for the remaining puzzlers on the library list); otherwise, I stayed true to the design, conquering it relatively quickly so that it might get back on the road.
The solution follows a clear logic, with discrete steps that make sense once discovered; I worried at first that the accumulated bits and pieces might pose a problem for the reset, but the mechanisms, once understood, make it easy to know how and where such pieces must reside. Before dropping it off at USPS for a short trip east, I ran through the solution a second time just to appreciate the flow of steps; there is a reason that this is design is considered a classic and I am grateful to have the chance to experience it!
And so, Angel heads back out on the road today, back once more to unicorn status for this grateful puzzler.