  \vbox{%
    \hbox{%
      \piece{3}{3}{0}{1}{2}%
      \piece{4}{0}{1}{2}{3}%
      \piece{1}{1}{2}{3}{0}%
    }%
    \hbox{%
      \piece{0}{0}{1}{2}{3}%
      \piece{2}{0}{1}{2}{3}%
      \piece{5}{2}{3}{0}{1}%
    }%
  }
