This crossword No. 11897 clues and answers were published on Wed 25 Jun 2008 and the puzzle can be visited by following The Guardian Quick Crossword No. 11897 link.
All Across Clues and Answers:
5-across – Intensely excited – supplied with current : ELECTRIFIED
7-across – Steal – prison : NICK
8-across – Area with set boundaries : PRECINCT
9-across – Sage : WISEMAN
11-across – Greek letter corresponding to S : SIGMA
13-across – Equipped with rowing blades : OARED
14-across – Italian vermouth : MARTINI
16-across – Making grubby : DIRTYING
17-across – Carbonaceous rock used as fuel : COAL
18-across – Credulousness : GULLIBILITY
All Down Clues and Answers:
1-down – Durable hard wood : TEAK
2-down – Of ideal perfection : UTOPIAN
3-down – French composer of ‘Carmen’ : BIZET
4-down – One rejecting all values, belief in existence etc : NIHILIST
5-down – Removing from contention : ELIMINATING
6-down – Factual programme or film : DOCUMENTARY
10-down – Stem bearing optical organ – steal key : EYESTALK
12-down – Spanish drink of red wine, sugar and fruit : SANGRIA
15-down – Intensely angry – dark bluish grey : LIVID
17-down – Copy – manger : CRIB
This crossword has in total 20 where 10 are across and 10 are down.