The series currently consists of the following released volumes: : Fundamental Algorithms (Published) Volume 2 : Seminumerical Algorithms (Published) Volume 3 : Sorting and Searching (Published) Volume 4A : Combinatorial Algorithms, Part 1 (Published)
Professor Knuth is currently writing Volume 4 . He generally works sequentially. While he has drafted preliminary material for Volume 6, he has stated he cannot finalize it until Volumes 4 and 5 are complete.
These chapters are ; the final manuscript may contain additional sections or omit some of the above.