This crossword No. 9201 clues and answers were published on Thu 28 Oct 1999 and the puzzle can be visited by following The Guardian Quick Crossword No. 9201 link.
All Across Clues and Answers:
1-across – Additional diagnosis : SECONDOPINION
8-across – Vegetable : PEA
9-across – Resemble : TAKEAFTER
10-across – Expert reasoner : LOGICIAN
11-across – Fish – alone! : SOLE
13-across – Select : CHOOSE
14-across – Quick : SNAPPY
16-across – Continuous dull pain : ACHE
17-across – Warbler : BLACKCAP
20-across – Retailer – artisan : TRADESMAN
21-across – Sick : ILL
22-across – Official document of inventor’s rights : LETTERSPATENT
All Down Clues and Answers:
1-down – Part of flower : SEPAL
2-down – Conversion : CHANGEOFHEART
3-down – Wallet : NOTECASE
4-down – Town in Rutland : OAKHAM
5-down – Persia : IRAN
6-down – Given to study of one’s inner self : INTROSPECTIVE
7-down – Scene of young children or plants : NURSERY
12-down – Snake : ANACONDA
13-down – Piece of portable property : CHATTEL
15-down – Scottish castle : GLAMIS
18-down – Driver of aircraft : PILOT
19-down – Nothing but – a lake! : MERE
This crossword has in total 24 where 12 are across and 12 are down.