This book club edition lacks an ISBN

Only once in a generation does a writer of Roger Zelazny's talent and diversity appear, winning the acclaim of readers and critics alike for exciting, innovative science fiction and fantasy. His career over the last two decades has progressed from strength to strength, from Hugo Award-winning novels such as This Immortal and Lord of Light to the fantastically popular Amber series. A computer whiz-kid chuckles at his console; old man Merlin plucks a mouse from his hoary beard -- from diodes to dragons, computers to chimeras, no one astounds and delights like Roger Zelazny.
Now, in a collection of stories culled from every major science fiction and fantasy magazine and anthology comes a brilliant retrospective of Zelazny entertainments. The title story, "The Unicorn Variation", an enchanting piece about a man who plays chess with a beer-guzzling unicorn in a bar, with the fate of the human race at stake, won the Hugo Award for best short story of the year. The longest piece in the book, "Home is the Hangman", is also a Hugo Award winner, about a robot run amok in the world of the future.
The twenty-one stories collected here span Zelazny's entire career, and are linked by Zelazny's own illuminating and amusing commentary. The commentary itself represents a veritable treasure trove of useful hints and suggestions for the writer of short fiction, anecdotal and clear. His light touch does not conceal the serious craftsman at work, always learning, always perfecting his technique, always searching for creative originality.