COG

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Across
  1. 2. Puzzle of many pieces
  2. 5. Exceptionally clever or talented (9)
  3. 7. Michael Jackson dance move (4,4)
  4. 11. A place where mail is received and sorted (4,6)
  5. 13. Dog breed (8)
  6. 15. Something strange that cannot be explained (7)
  7. 17. A woman noted for courageous acts (7)
  8. 18. Cliff ______, singer of 'Summer Holiday'(7)
  9. 20. Sing along to recorded music using a mic (7)
Down
  1. 1. _______ Gable, from 'Gone with the Wind' (5)
  2. 3. Valuable old thing (7)
  3. 4. A four stringed instrument from the lute family (7)
  4. 6. A hope of achieving something (10)
  5. 8. A belief or view (7)
  6. 9. Online social media and networking service (8)
  7. 10. A desert of sponge cake, fruit, jelly and cream (6)
  8. 12. Few and far between (6)
  9. 14. A usually humorous five-line poem (8)
  10. 16. A journey made by car (4,4)
  11. 19. Friend in Spanish (5)