(Author unknown)

You are looking at the shaft. A large red block, four units by one unit,
is above your head, dropping slowly. It has its long edge horizontally
aligned.

> turn the block

I don’t know how to “turn” something.

The block descends lower.

> rotate block

The block rotates in mid air, now with the long edge vertically aligned.

The block descends lower.

> move block left

The block shifts to the left.

The block descends lower.

> drop block

You aren’t holding the block.

The block descends lower.

> move block down

The block drops into the narrow gap, filling the four columns. The
columns flash twice, then vanish, dropping the blocks above them down. A
musical tone is heard.

A square grey block, two units by two units, is now overhead, slowly
dropping.