An optimal solution of usa13509

Here are related news items from HPCWire, London Financial Times, and TechWeb
(all three reprinted in Parallel Computing Research).

A larger-scale color picture
of our optimal solution against a background of mountain ranges and lowlands
has been included in Martin Grötschel and Manfred Padberg, "Die optimierte Odyssee",
Spektrum der Wissenschaft 4/99, pp. 76 -- 85.