Simplest Puzzle

thingiverse

Human: Simplest puzzle ever. Or so they say. Your goal is to assemble four pieces into one simple square. How easy can that be, or are you up for the challenge? Is this puzzle just a breeze to print and also a cinch to solve? You won't know until you try them both out. Original pieces stand 3 millimeters high and the solved square measures exactly 50x50 millimeters, but feel free to scale it as needed. Happy solving!