You run past the Grue, which turns out to be a midget wearing a Grue mask.
> ask midget
You ask the midget a question. Instead of an answer, he challenges you to a game of space checkers.
To your left is another grue.
You see a manual labelled "Rules for Space Checkers/Guide to Moths".
> pick up manual
The only text in the manual reads "Space checkers is checkers only in space".