This crossword No. 13971 clues and answers were published on Wed 18 Feb 2015 and the puzzle can be visited by following The Guardian Quick Crossword No. 13971 link.
All Across Clues and Answers:
1-across – With little or no excess : SKIMPY
4-across – Cop : BOBBY
7-across – Nocturnal dog-like predator : JACKAL
8-across – Circle of light around the moon : CORONA
9-across – Good-quality sound equipment : HIFI
10-across – Small monkey — Rome’s mat : MARMOSET
12-across – Numerical two-dimensional matrix where the sum of all the rows : MAGICSQUARE
17-across – Supposedly helpful untruth : WHITELIE
19-across – Roman male garb : TOGA
20-across – Snigger : TITTER
21-across – Artist’s total output : OEUVRE
22-across – English prince — trouble : HARRY
23-across – Heavy food : STODGE
All Down Clues and Answers:
1-down – Arena : STADIUM
2-down – Suspicion : INKLING
3-down – Involving controversy : POLEMICAL
4-down – Flower : BLOOM
5-down – Program used to view HTML documents — cow in a field? : BROWSER
6-down – Causing fermentation : YEASTY
11-down – French blue cheese : ROQUEFORT
13-down – Flyer : AVIATOR
14-down – Bewilder : ASTOUND
15-down – Prepare to fence! : ENGARDE
16-down – Sample piece of cloth : SWATCH
18-down – Hard black-grey mineral used in grinding and polishing : EMERY
This crossword has in total 25 where 13 are across and 12 are down.