How to play Lightbox

Rules

1. Start at START and follow its arrow.
2. A / mirror swaps north with east and south with west. A \ mirror swaps north with west and south with east.

How to answer

1. Trace the beam one cell at a time, changing direction at each mirror.
2. Tap an exit on the board to submit it. Sound is optional; use Sound on or Sound off to change it.
3. Review the solved answer to see the beam’s route.

Solving tips

• Keep track of the direction after each reflection before moving to the next cell.

Practice

These examples do not change your daily progress or streak. Refresh the page to try them again.