Champagne to John George of Guildford, Surrey (and old Building Centre hand), who spotted Victor Horta's Hotel Tassel in Brussels last week - and the editor kindly told you all that the dog was a Groenendael. This week's clue: Heading for an old flame. Identify hound, kennel and architect. Answers on a postcard (preferably doggy) by Monday am. Send to aj Astragal, 151 Rosebery Avenue, London EC1R 4UW, or in emergency, fax 0171 505 6701.