PicoLock is a small sequential discovery puzzle, similar in size to B-Lock. It received great feedback from puzzlers at IPP40. It has also been graded as one of the Top 10 Vote Getters in the latest Puzzle Design Competition.
PicoLock is a novel lock puzzle which features a unique mechanism not found in any other lock puzzle. It comes with a key and a securing ring. Once you insert the key into the keyhole, you might be surprised to find that it doesn't open easily. Measuring just 40mm in width, PicoLock may be small in size, but it packs a punch of intrigue and challenge.