It worked this way for me: find two purple runes side by side, with another on the same line but only one rune away. Click on the purple rune which is away, then click on the rune between that one and the two together, and when the two unlike runes shift, they will be three in a row. Voila! Anyhow, that's how I did it.
Quest
Enchanted Lock
A World of Warcraft quest in Nazjatar. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
This puzzle is basically Bejeweled. Move the runes to line up 3 purple runes and complete the quest.
I was matching random stuff and got the "objective complete. match 3 purple runes"
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(56245))
Requirements
Read from the Blizzard quest API.
Description
<The lock appears to be secured by a magical mechanism. It is clearly one of Mardivas', and from what you can surmise from reading the journals, it is likely locked via an arcane puzzle. You look around the room, and see something odd in the water.>
Community notes from Wowhead · 19 comments
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Reward details
Reputation: The Unshackled +50
Oppressed by the Naga, these refugees have banded together to rise up and seize their freedom.
Reputation group: Battle for Azeroth.
Other quests in Nazjatar that reward The Unshackled reputation: Stay Low, Stay Fast! (+225), Creature Study: Zanj'ir Naga (+150), The Laboratory of Mardivas (+500), Settling In (+75), Scouting the Pens (+75), What Will It Grow? (+50).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.
Where this quest fits
Other quests with this name
This one: Horde only · Nazjatar · Level 50.
Steps, storylines and map placement from the client’s QuestLine, prerequisite and QuestPOI data; neighbouring quest text is Blizzard’s own (quest API), shortened to its opening sentences.