ref: 4faecc77264b6d3e84ae24707af5593490f36796
parent: 6ea453c95f1051b23bc128a34e1166bc9c53cdff
author: Simon Tatham <anakin@pobox.com>
date: Fri Oct 21 04:07:31 EDT 2005
New puzzle from James H: `Bridges', another Nikoli job. [originally from svn r6409]