Currently I use a manually declared version of the chapter title. But the idea is to extend it to use specific and manually chosen number of the chapters.

I try to obtain numbers like this 1, 1b, 2, 2b, 3, 4. But for obtaining b, I want to specify it manually with for example an option in the \chapter command (something like this \chapter{...} for obtaining 1 then \chapter[b]{...} for obtaining 1b.

Do you have any ideas for obtaining this result?

  • You could specify all of the manually. Just add \renewcommand{\thechapter}{<whatever>} before \chapter{<title>}...
    – Werner
    Jan 22, 2015 at 18:16

1 Answer 1


You could add a + specifier for the “repeat chapters”; the proposed code doesn't interfere with usages of \chapter*.


\newcommand{\repeat@chapter}[1]{% #1 is +




enter image description here

If you load hyperref, then add


just after \makeatletter. Make sure \usepackage{hyperref} is before the shown code.

  • Great solution! Jan 22, 2015 at 18:42
  • Great! You always have a solution :-) I will try this.
    – Guuk
    Jan 22, 2015 at 18:44

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