One Key Too Many

Every door was locked. So why is there an extra key?

Your role

Evidence is a system. Read it like one.

Match cuts, registries, access permissions and custody to expose the unregistered duplicate.

How every case works
  1. A hidden state is generated from a deterministic seed.
  2. Evidence is compiled from that state.
  3. The module audits every candidate and accepts exactly one solution.
  4. The same seed produces the same case in print, browser and challenge links.
Solve House — Daily Deduction Games