Wisdom Puzzle is a Xion Bulletin Board request in Stellar Blade. You can accept and complete it after completing the Simple Puzzle request and returning the second Hyper Cell to the Presence Chamber during the Light of Hope story mission.
How to Solve the Wisdom Puzzle | Stellar Blade
Like the Simple Puzzle prompt, the Wisdom Puzzle is a Stellar Blade math problem where you have to figure out a formula to get a four-digit code. The Simple Puzzle isn’t quite as easy, and the Wisdom Puzzle is a lot harder. It took me a solid 15 minutes of head-scratching, chin-stroking, and good old-fashioned trial and error, but I finally got the right answer.
Once you both complete the Simple Puzzle request and place the second Hyper Cell in the Presence Chamber Hyper Drive, the Wisdom Puzzle request will be available on the Xion Bulletin Board. Accept the request, then go to the same console you used for the Simple Puzzle request, the one near the entrance to the Presence Chamber.
Operate the console and press Triangle to show the hint. It says: "Oh! You're pretty good. Should I give you a harder puzzle to solve?" And below is the next puzzle:
