Choose an investigation
Pick one of fifteen deduction systems, a shared Daily, a weekly objective, a tournament slot, or a social mode.
How Solve House works
Evidence first. One answer. Your way to play.
You do not need to learn the entire platform before opening a case. Start with one deduction, then discover competition, collaboration and community when they become useful.
Read the evidence
Every certified puzzle is generated and validated so the file supports one intended answer. The solution stays server-side until you close the case.
Make your deduction
Use the workbench, ask for a hint if needed, and submit one of the candidate conclusions. Hints and wrong attempts matter to competitive results.
Build your investigator record
Signed-in unique solves can increase score, streak, rank, mastery and achievements. Replaying the same file cannot farm permanent score.
Take it social
Send the exact same case to a friend, become Rivals, start a shared streak, enter a tournament, create a Club, or solve split evidence in co-op.
Go deeper
Discuss theories on the Caseboard, submit an original case for moderation, complete weekly goals, invite investigators and connect eligible physical books.
The scoring contract
Competitive results are server-authoritative.
The browser can display a timer, but it does not get to invent your result. Tournament slots preserve their first-open timing and accumulated penalties; exact-case challenges compare locked puzzle identities.
1intended answer
15deduction systems
4difficulty levels
∞fresh archive play