Crystal Fragment Location

Hey y’all, I have a quick question. I just got delta Beldum ® and would love to eventually use crystal delta Metagross ®. However, I cannot for the life of me find the crystal fragment. I know it’s in the Perfection Base, specifically in the “boulder puzzle area” according to an older thread. However, I don’t know of any boulder puzzles in Perfection Base, and I already looked around in the Meloetta tile puzzle in the Helios Sewers. Does anyone have screenshots or detailed instructions? I’d greatly appreciate it.

I believe the crystal fragment is only accessible postgame after completing certain postgame quests. You will get access to the boulder puzzle after this.

Alright, thanks for the tip. I’ll play through the rest of the postgame quests.

You have to beat the E4 again and finish the Taen Quest to get access to the Perfection Base with the boulder puzzle.