New chapter on even _or_ odd page

[Marko Degenkolb]

Hi all,

I have a document using koma-script book which contains parts and 
chapters. By default both start on an odd (right) page.
This is fine for the part but the chapter should start on the _next_ 
page, i.e. even or odd, to avoid too many empty pages.

I already tried 
(from http://www.lyx.org/help/layouts/chapter.php#newpage):
  \renewcommand*{\cleardoublepage}{%
    % original definition, see latex.ltx
    \clearpage
    \if@twoside
      \ifodd\c@page
      \else
        \thispagestyle{empty}% added
        \hbox{}\newpage
        \if@twocolumn
          \hbox{}\newpage
        \fi
      \fi
    \fi
  }
But unfortunately this gives no effect at all.

Then I tried:
  \let\cleardoublepage=\clearpage
This works for the chapters, but now the parts start on the left page 
as well (but have an empty page before the next chapter - strange).

Does anyone have an idea?

Thanks a lot,
Marko