The scene
Costa Planetarium · Model galleryA sphere from the solar system display appeared in the exit trolley instead of its case. Someone moved it during a scheduled ten-minute blackout.
The three workers began the interval in different places and had to report to the entrance at the end. Measuring the distance to the display case is not enough: they first had to visit the workshop to collect the key.
What we know for certain
One person made the entire journey, collected the key and removed the sphere without help. They walked along the stated corridors, without running or taking shortcuts. Everyone was at the entrance after ten minutes. The travel times are mandatory minimums and must be added together.
The three accounts
Isaac Mar
Reception technician«When it began, I was at the entrance beside the empty trolley.»
Laia Cid
Exhibition guide«I started in the photography gallery. I did not have the display-case key.»
Samir Bel
Restorer«I was inside the workshop when the lights went out.»
Examine the evidence
0 of 5 openedOpening these five clues does not cost points.
01The corridors
Entrance to workshop takes two minutes; entrance to gallery, one; gallery to workshop, two; workshop to display room, three; gallery to display room, six. All corridors work in both directions, and there are no other connections.
02The key
The only key was in the workshop. Collecting it requires one minute there. Nobody had a copy or could collect it before the blackout.
03The display case
Opening it and removing the sphere requires a full minute in the display room, in addition to corridor travel. Carrying the sphere does not alter the travel times.
04The compulsory finish
All three appear in a continuous view of the entrance exactly ten minutes after the start. The transfer had to be finished by then.
05The starting positions
The cameras place Isaac at the entrance, Laia in the gallery and Samir in the workshop at the start. Everyone could begin moving at that instant, but not before.