Question 1

Are the puzzles always solvable?

Accepted Answer

Yes. Every board is verified against all mirror orientation combinations before it is shown.

Question 2

Do mirrors that are not on the beam matter?

Accepted Answer

Only mirrors the beam passes through change anything u2014 the rest are decoration until the path moves.

Question 3

Can the beam loop forever?

Accepted Answer

The tracer stops after 400 steps, so a closed loop simply ends the path without hitting the receiver.