WASHINGTON, Dec. 23, 2005 - The servicemembers recovering at Walter Reed Army Medical Center here will receive a unique gift this holiday season: a larger-than-life chess set adorned with signatures and messages of support. The 8-by-8-foot chess set is being donated by Mega Chess, a private company in California, and delivered by Operation Interdependence, an organization that supports regularly scheduled deployments of troops with care packages. This is about the 20th chess set Operation Interdependence is delivering to troops, said Albert Renteria, Operation Interdependence founder and president. Each set is donated by Mega Chess and bears the signatures of hundreds...