This crossword No. 11504 clues and answers were published on Thu 22 Mar 2007 and the puzzle can be visited by following The Guardian Quick Crossword No. 11504 link.
All Across Clues and Answers:
5-across – Rub in news : SWINBURNE
8-across – Quick emission of smoke etc : PUFF
9-across – Accurate shot : BULLSEYE
10-across – Frozen hanging spike : ICICLE
11-across – Feel or express contrition : REPENT
13-across – Escaped : ELUDED
15-across – Civil : POLITE
16-across – Food of the gods : AMBROSIA
18-across – Strip of material – window frame : SASH
19-across – Signalling language : MORSECODE
All Down Clues and Answers:
1-down – Insincere : TWOFACED
2-down – Empower : ENABLE
3-down – Maker of knives etc : CUTLER
4-down – Completes – purposes : ENDS
6-down – Field dressing to reduce acidity : QUICKLIME
7-down – Technique of inducing sleep-like state : HYPNOTISM
12-down – Line of stakes as a defence : PALISADE
14-down – Refrain : DESIST
15-down – Caper : PRANCE
17-down – Bird – chessman : ROOK
This crossword has in total 20 where 10 are across and 10 are down.