I'm working on an emulator for the Soviet mainframe BESM-6. Among a few games written for it there was a game called "Inspector" (or "Detective"). Its code didn't survive; the only mention of it I can find on the available disk images is that it was "adapted and reworked" without mentioning the source. The usual source for non-original computer games in the USSR in the early 80s were Western magazines, which means that there should likely be a BASIC language prototype for the game.

The game play was, IIRC, as follows: the player is a detective trying to solve a murder of a party host, that happened between 1am and 9am in one of the ~6 rooms of the house. The player can interrogate each of the ~5-6 guests asking questions like "Which room were you in at N o'clock" and "When were you in such-and-such room?" In their responses guests would mention who else was in the room with them, including the host if he was still alive, and could provide some additional information. The culprit could lie. The guests could move from a room to an adjacent room between the hours, the host stayed in one room. A good result was solving the murder in 4-5 questions.

Does this ring a bell?