Modifié le 3 Mai 2009 à 21 h 01.
%@Auteur:Véronique Glaçon\par
\renewcommand\arraystretch{1.7}
\begin{center}
\begin{tabular}{p{1cm}p{1cm}p{1cm}p{1cm}p{1cm}p{1cm}p{1cm}p{1cm}}
\cline{4-5} & & & \multicolumn{2}{|p{2cm}|}{} & & & \\
\cline{3-6} & & \multicolumn{2}{|p{2cm}|}{} & \multicolumn{2}{|p{2cm}|}{} & & \\
\cline{2-7} & \multicolumn{2}{|c|}{\rnode{C}{}} & \multicolumn{2}{|p{2cm}|}{\centering{17}} & \multicolumn{2}{|p{2cm}|}{\centering{10}} & \\
\hline \multicolumn{2}{|p{2cm}|}{\centering{\rnode{A}{5}}} & \multicolumn{2}{|p{2cm}|}{\centering{\rnode{B}{9}}} & \multicolumn{2}{|p{2cm}|}{}& \multicolumn{2}{|p{2cm}|}{}
\\ \hline
\end{tabular}
\end{center}
\ncline[nodesep=3mm,linecolor=white]{-}{A}{B}
\ncput{\rnode{D}{\pscirclebox{$+$}}}
\ncline{->}{D}{C}
\ncline[nodesepA=1mm]{->}{A}{D}
\ncline[nodesepA=1mm]{->}{B}{D}