Spoiler alert: This post is part of an in-depth discussion of The Courts of Chaos by Roger Zelazny, which will inevitably reveal key plot points. You may well have a lot of reading ahead of you.
Corwin hellrode most of the way from Amber to the Courts of Chaos, facing opposition from Brand and others all the way, only to find that he would not be able to complete the journey, as he could not outrun the oncoming storm of Shadow being undone by Oberon's failure to repair the Pattern in primal Amber. Instead, Corwin decided to create a new Pattern where he was to hold back the destruction. Where Oberon failed, he succeeded—but immediately he was attacked by Brand, who materialized, stole the Jewel of Judgment, and disappeared.