Who killed Mei?

Hard, 9 clues

7 people were in the building, and one of them did not come out. Everyone was on a different square, one to a row and one to a column, on the 7 by 7 plan. Work out where each of them was, the victim included. Whoever was alone with the victim did it.

Stand or sit onsleeping podairlock

Only besidelockerscreentelescoperobotsatellite dishspacesuitfridgetable

Tap a square or drag Archie. Hold for a note.

ArchieHe was in a corner of the airlock.He was in the same room as Skye.

The cards

Pick a person by tapping the photo on their card, the victim too. Then tap a square to put them there, or drag the photo onto it. At this difficulty the game does not cross off rows and columns for you, unless you switch on Cross off for me. Holding a square, or switching the pencil on, makes a note. Keyboard: Enter places, Shift and Enter makes a note.

ArchieSelected
He was in a corner of the airlock.
He was in the same room as Skye.
Dana
She was alone.
Frank
He was in the mess module, beside a table.
Holly
She was not beside the telescope, the window or the satellite dish.
She was the only person in the space lab.
Percy
He was beside the window.
Skye
She was beside the window.
Mei
The victim. She was on the one square nobody else can have, in the same room as the murderer.

Good to know

Beside: on one of the four squares directly above, below, left or right, in the same room. Diagonally does not count, and neither does through a wall. A window or door in the wall of your square is beside you.
Alone: nobody else in the same room, the victim included. Alone with someone: those two, and nobody else in that room.
In a corner: on a square of that room where two of its walls meet. The end of a narrow corridor counts too.

0 of 7 placed

Place everyone first, the victim too.

If it is not right yet, checking costs 30 seconds.