SOLUTION TO PRIZE CROSSWORD No 15,578

— ACROSS: 1 Grandmaster. 9 Prattle. 10 Reroute. 11 Loo. 12 Ethical. 13 Slander. 14 Doc. 15 Sutra. 17 Ochre. 18 Agent. 20 Upend. 22 Urn. 24 Shih-tzu. 25 Baghdad. 26 Lea. 27 Sunrise. 28 Coterie. 29 Right-angled. DOWN: 1 Graphic designer. 2 Attacks. 3 Dwell. 4 Aerospace. 5 Tornado.6 Round-shouldered. 7 Append. 8 Degree. 16 Truculent. 18 Assess. 19 Tatting. 21 Digital. 23 Nodded. 25 Bacon.