Does there exist a 3x3 magic square of square numbers?

Question

https://www.youtube.com/watch?v=stpiBy6gWOA

There's a $10,000 USD prize for finding one. There's a high-five prize for proving there are none. We'll know one way or the other eventually!

Manifold Markets · Answer

Probably not — Manifold Markets prediction market estimates a 31% chance (8 traders, as of Sep 25, 2025).