This crossword No. 9668 clues and answers were published on Sat 28 Apr 2001 and the puzzle can be visited by following The Guardian Quick Crossword No. 9668 link.
All Across Clues and Answers:
1-across – Causes trouble : KICKSUPAFUSS
9-across – Chosen : ELITE
10-across – Transported : CARRIED
11-across – Empty : VOID
12-across – Recklessly wasteful or extravagant : PRODIGAL
14-across – US bar – type of car : SALOON
15-across – North American republic : MEXICO
18-across – First : EARLIEST
20-across – Idiot : FOOL
22-across – Secret – soldier : PRIVATE
23-across – Characteristic style of a period : IDIOM
24-across – Long red viper : RINGEDPLOVER
All Down Clues and Answers:
2-down – First : INITIAL
3-down – Coal-carrying vessel : KEEL
4-down – Remove stopper from : UNCORK
5-down – Shortened : ABRIDGED
6-down – Employing : USING
7-down – Cut of mutton : SADDLEOFLAMB
8-down – Person difficult to wake : HEAVYSLEEPER
13-down – Give incentive to : MOTIVATE
16-down – Greatly revere : IDOLISE
17-down – Slumbering : ASLEEP
19-down – Rule : REIGN
21-down – Grain store : SILO
This crossword has in total 24 where 12 are across and 12 are down.