Blind Corners — play free on Arkai

A daily deduction puzzle: three new boxes every day, the same for everyone. A dark box hides a few mirrors. Fire a beam of light in from any edge and you learn one thing only: where it comes out. Every mirror it met on the way turned it around a corner you could not see. Mark where the mirrors must be, watch the beam run through your marks, and check when every beam is explained. Each beam costs a point, so find the mirrors in as few as the par, then share your result without spoiling the box…