Solving Rathma's puzzle in Diablo 4 is likely the first little brain teaser you'll run into during the Lord of Hatred campaign, but like most of the ARPG's puzzles, it's pretty simple to complete. You'll encounter this during the main story when exploring Skovos, and it's a classic example of "Choose three things in the right order".
I've kept any narrative details to a minimum below, focusing only on the puzzle, but this guide will, of course, contain spoilers for the puzzle itself. Otherwise, here's how to complete Rathma's puzzle in A Blade's Weight quest.
English (US)