HackyHour Würzburg 111

Live

• When: Wednesday January 28^th^, 2026 at 5 pm
• Where: Physics Department - Seminar Room SE3 in building P1.
• Info: HackyHour Website

Participants

Please add your name and indicate if you want to order pizza :pizza: and optional preferences/dislikes (this is required if you want pizza and can’t join on time)

• »Add your name here«
• Markus :pizza:
• Max :pizza:
• Flo :pizza:

Topic Suggestions

Add your suggestions to the list (feel free to also add previously suggested topics). Topics are selected after a brief presentation through successive elimination. If someone comes with a real problem, this has priority.

Problems

• Markus:
  • Why does bind9 get permission denied in /data but not /etc? (NixOS)
  • How to delete nameserver entries with nsupdate?
• Max
  • bibiman config file not working → :white_check_mark: :muscle:

Meta

• Pizza bill from November → Flo
• Check if Flo’s radicle repo is still out there somewhere rad clone rad:zqdwSsWqeGWrZBf4nKfArY9wb3SQ
• Is there a seahorse emoji? -> https://hackmd.io/@orthen/ry9-Uwg7Wl
• DCCW Challenge from Physics
• DI.DAY
• HackyHour in February/March/April

Exchange of Ideas

• Private Image Library organization (NAS) - folder structure, Immich or similar, sync (devices, WhatsApp), backup, deduplication, metadata enrichment → czkawka duplicate finder(https://github.com/qarmin/czkawka)
• Work with your smart home hardware using open source software? (e.g. Home Assistant)

Fun

• Build an animation to visualize 100k cardiac MRIs with manim :abacus:
• building a multiplayer Guess the Dice (or other metric) game (inspired by Guess the Correlation) or pentagame using supabase :lightning:
• Deep Lecture - if my beta request gets approved in time :teacher:
• practical DNSSEC: key roll, and parent zone communication :lock:
• Try the GitHub Copilot SDK to include copilot in your own app :robot_face:
• DCCW challenge idea (implement (LLM-proof)):
  • hiding signal in high dimensions - recover via PCA → file
  • puzzling -> automatically solve completely white puzzle, by Stuff Made Here YT video
  • parrondos paradox
  • max betting stats
• convert ctfd pages to static

Maybe another time

• Try to solve a problem from the ICPC world finals

Past ideas

Topic suggestions are no longer carried over automatically, to speed-up the decision process. However, it might be interesting to revisit some past ideas at some point. Therefore, a collection of past ideas is maintained in this Sammelsurium.

Challenge Club

From time to time, we solve challenges together in the HackyHour. It is usually undesired to share solutions publicly, as it spoils the fun for other players. Therefore, we created a private repository where we collect our joint solutions. Just tell Markus if you want access.

Cross Links

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