Synopsis
History
First publication: Ace Double #F-149, with King of the Fourth Planet by Robert Moore Williams, Ace Books, 1962
Written by Katherine MacLean and Charles De Vet.
Review
Videos
We have the story in these editions:
King of the Fourth Planet / Cosmic Checkmate, paperback, Ace Books, 1962-00-00
All of the stories in the Kalin Trobt series:
Cosmic Checkmate
Second Game
Second Game
Third Game
