The Baldur's Gate 3 brain puzzle is one of the harder challenges you're likely to find while exploring the game. Towards the end of act two, you'll find yourself back in the dank and dark depths of Mind Flayer Colony, and if you do a little exploring into the Necrotic Lab, you'll likely locate a console and a locked door. When you try to activate the console, it'll project a neural map of a brain you have to connect up.
The puzzle is basically a fancy connect the dots, but if you're willing to take the time—or just use our solution—you can get yourself a new brain to talk to in the nearby Mind Archive machine, and a very strong condition that'll give you advantage on future rolls. That said, here's how to solve the Baldur's Gate 3 brain puzzle.
