This crossword No. 9537 clues and answers were published on Fri 24 Nov 2000 and the puzzle can be visited by following The Guardian Quick Crossword No. 9537 link.
All Across Clues and Answers:
5-across – Egotistical : SELFCENTRED
7-across – Party disciplinarian : WHIP
8-across – Become less : DECREASE
9-across – Appease : PLACATE
11-across – Noise indicating sleep : SNORE
13-across – Cost : PRICE
14-across – Divide into three parts : TRISECT
16-across – Pieces and board : CHESSSET
17-across – Vulgarly tasteless : NAFF
18-across – Apparently contradictory : PARADOXICAL
All Down Clues and Answers:
1-down – Fiasco : FLOP
2-down – Sourness : ACIDITY
3-down – Seek admittance : KNOCK
4-down – Wooded area of northeast France : ARDENNES
5-down – : SCHOLARSHIP
6-down – Abominable – scandalous : DISGRACEFUL
10-down – Over-confident : COCKSURE
12-down – Excuse : PRETEXT
15-down – Stage whisper : ASIDE
17-down – One may get it in it! : NECK
This crossword has in total 20 where 10 are across and 10 are down.