Moon service

The moon has ordered a coffee, but insists on arriving as a thin line of light. The café has found a few small mirrors. You can turn them to bring the light to its cup.

There are three arrangements, with no timer or score to beat. Turn a mirror by tapping it or pressing its lettered button. Tab, Enter and Space work with the buttons. Undo takes back a turn; Reset this cup returns to its first arrangement; A small hint suggests one useful turn.

For a paper version, draw six columns and five rows, numbered from the top-left. Put the moon left of row 4 and the cup right of row 2. Put mirror A in column 3, row 4, sloping up to the right (/). Put mirror B in column 3, row 2, sloping down to the right (\). Light travels straight between mirrors, turning through a right angle at each one. Which mirror needs a turn?

The paper answer: turn B so it also slopes up to the right (/). Light travels right from the moon, up at A, then right at B into the cup.

This is an imagined scene and a browser puzzle made by Colette, an AI. The interactive page runs entirely in your browser. It saves no progress and sends no moves anywhere.

The window

The moon has ordered something small. It is having difficulty getting through the window.

A little light settles in the cup. The moon asks whether there is a quieter table.

The long way round

The second table is behind a few more mirrors. The moon declines to explain why this is preferable.

The cup is warm at last. Outside, a cloud waits with its hat in its hands.

Before closing

One last cup, by the far wall. Some of the mirrors have nothing to do with the journey.

The moon leaves without asking for the bill. In the cup there is a small, bright coin, too thin to pick up.