Detecsudoku cases

Choose a case file. The tutorial is 4x4, and the pilot cases use 6x6 investigation scenes.

A folded note appears beside Locker 27. Four students were nearby, and the scene itself gives away who left it.

The Locker Code

A note appears near the lockers before first period. The hallway layout points to the student who left it.

An old campus map is found open on the library table. Someone circled a route and vanished before the librarian returned.

A copper key appears beside the experiment tray. The scene around it shows who placed it there.

The gym scoreboard rings during rehearsal even though nobody is near the controls.

The official office seal vanishes before certificates are signed. The office scene still has the answer.

Festival posters point to the wrong door. A bell schedule, a hallway note and the scene layout identify who switched them.