HOW TO PLAY

1. 1

   Every suspect occupies exactly one square — one per row, one per column.

2. 2

   Tap a suspect, then tap a square to pencil in their initial as a possibility.

3. 3

   Long-press (or double-click) a square to confirm a suspect there. Their row and column are cleared automatically.

4. 4

   Use X Mode to cross out squares you have ruled out.

5. 5

   Clues live on each suspect card. When everyone is placed, find the pair left alone together — one is the victim, the other the murderer — and fill the FINAL DEDUCTION slots.

Keyboard: initials select a suspect · X toggles elimination · Z undo · Esc deselect