Weekend crossword

Across

6 Swiss city on the Limmat (6) 8 Ariadne ......, friend of Hercule Poirot (6) 9 See 15 10 A method favoured by the FBI for listening to suspect conversations (7) 11 Qatar-based television broadcaster (2,7) 13 Cryptocurrency trading platform based in Vancouver and Gibraltar (3) 15/9 Feature of – and national park on – the Rio Grande (3,4) 16 The day whose child, so the rhyme says, is full of woe (9) 18 Emma ......., anarchist, activist and founder of Mother Earth magazine (7) 20 See 17 21 Five ...... and two fishes: what Jesus needed to feed the multitude (6) 22 Shakespearean stage direction for several people to leave (6)

Down

1 Jazz musician associated with the Cotton Club (4,9) 2 Sir ....... Hoyle, speaker of the House of Commons (7) 3 See 4 4/3 Age at which the Beatles wondered, “Will you still feed me?” (5,4) 5 A Gentrys hit from 1965 – and the Bay City Rollers’ debut single (4,2,7) 7 Alan Alda’s character in M*A*S*H (7) 12 Private Eye’s manager of Neasden FC (3,4) 14 Book containing the Book of Psalms, often with other liturgical material (7) 17/20 Classic US sitcom starring Lucille Ball (1,4,4) 19 Inspiration of whom Clio and Erato are examples (4)