Unlocky 13 is an assembly puzzle lock, with a total of 17 moves to assemble and 13 moves to insert the last piece. No rotations are required for this puzzle, just linear movements. This interlocking puzzle was designed for beginner solvers but also intermediate solvers who are interested in assembling puzzles. If you are looking for the solution, feel free to email me for help.

*Designer recommendations*: For a nice quality feel to the puzzle, I recommend changing the infill% to 40-50% with rectilinear or gyroid pattern as this will add weight and stability to the pieces.

Target time: 15-30 minutes.