How to Solve the Lamp Puzzle in the Library of Zoltan Kulle: To In Of

Stuck on the Zoltan Kulle Lamp Puzzle in Diablo Immortal? Follow our step-by-step guide to light all nine lamps simultaneously and progress your main quest!

Alright, so you're in the Library of Zoltan Kulle and instead of smashing demons, you've hit a bit of a head-scratcher: the Lamp Puzzle. Don't worry, it's a classic type of puzzle you might have seen before, and it's a nice little break from the usual monster-mashing. The goal here is to get all nine lamps lit up at the exact same time.

You'll see a 3x3 grid of lamps. When you click on a lamp, it'll toggle its own state (on/off) and also toggle the state of any lamps directly next to it in a straight line – up, down, left, or right. If a lamp is on, it'll turn off, and if it's off, it'll turn on.

Here's the trick to solving it:

1. Start by interacting with all four of the corner lamps.
2. Once the corners are done, work your way around the perimeter, either clockwise or counterclockwise, hitting the lamps on the edges. This sequence will light up the corner lamps and then toggle the lamps next to them on the edge.
3. After you've dealt with the perimeter, you'll notice the center lamp is still unlit, along with the four lamps directly surrounding it.
4. Your final move is to interact with the middle lamp. This will light it up and, crucially, also light up those four adjacent lamps that were still off.

Boom! All nine lamps should now be lit simultaneously, and you can continue with your main quest. If you're more of a visual learner, there's a GIF linked in the original guide that shows the whole process in action.