This crossword No. 13215 clues and answers were published on Sat 15 Sep 2012 and the puzzle can be visited by following The Guardian Quick Crossword No. 13215 link.
All Across Clues and Answers:
1-across – Savant : SATNAV
4-across – Triangular upper part of a wall under a roof : GABLE
7-across – Offensive about a particular gender : SEXIST
8-across – Burrowing rodent of north and central America : GOPHER
9-across – Magic stick? : WAND
10-across – Person of wide-ranging knowledge : POLYMATH
12-across – Theatrical make-up : GREASEPAINT
17-across – Space made by burrowing creatures in fruit, wood, books etc : WORMHOLE
19-across – Car — river crossing : FORD
20-across – Expose : DEBUNK
21-across – Courageous : DARING
22-across – Eccentric — like nougat? : NUTTY
23-across – Hanging limply — animated dog created by Tex Avery : DROOPY
All Down Clues and Answers:
1-down – The whole thing? : SHEBANG
2-down – Twirl : TWIDDLE
3-down – Italian hors d’oeuvre : ANTIPASTO
4-down – Sticky : GOOEY
5-down – Gulf sheikhdom : BAHRAIN
6-down – : EARTHY
11-down – Person interpreting from mouth movements : LIPREADER
13-down – Melted cheese on toast : RAREBIT
14-down – : INFERNO
15-down – Oppression : TYRANNY
16-down – Home of ABBA, Volvo and smorgasbord : SWEDEN
18-down – : HUNKY
This crossword has in total 25 where 13 are across and 12 are down.