%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 10-1-21 on page 683.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{195.83385pt}
\StartShownPreambleCommands
\usepackage{texmate,paralist}
\setchessfontfamily{condal}
\VariationsEnvironment
    {\begin{enumerate}[a)]}{\end{enumerate}}
\StopShownPreambleCommands
\begin{document}
Main variations in the Orang-Utang opening:\\
| b4 \[ \ahead \begin{variations}
  \var c6 ; Bb2 Qb6
  \var d5 ; Bb2 Qd6
  \var d5 ; Bb2 Nf6 ; g3
  \var d5 ; Bb2 Nf6 ; e3
  \var e5 ; a3
  \var d5 ; Bb2 f6
  \var d5 ; Bb2 Bxb4 ; Bxe5 Nf6
  \end{variations} \] |
\end{document}