This crossword No. 12413 clues and answers were published on Mon 22 Feb 2010 and the puzzle can be visited by following The Guardian Quick Crossword No. 12413 link.
All Across Clues and Answers:
1-across – Part of a camel : HUMP
3-across – Somewhat OTT : ABITMUCH
8-across – African river : NILE
9-across – Fuel eg for barbecue : CHARCOAL
11-across – Absurd : RIDICULOUS
14-across – Money offered for services : REWARD
15-across – High explosive — à la tom : AMATOL
17-across – Dickens’s unfinished mystery tale : EDWINDROOD
20-across – Amount that can be contained : CAPACITY
21-across – Joint : KNEE
22-across – Remain on the spot till advance is possible : MARKTIME
23-across – Those voting for the motion : AYES
All Down Clues and Answers:
1-down – : HONORARY
2-down – Disastrous collapse — nuclear accident : MELTDOWN
4-down – See : BEHOLD
5-down – Grand Inquisitor, involved in the expulsion of Jews from Spain : TORQUEMADA
6-down – : UPON
7-down – Two of which make the whole : HALF
10-down – One easily frightened : SCAREDYCAT
12-down – : ATTORNEY
13-down – Joy : GLADNESS
16-down – Sufferer : VICTIM
18-down – Racket : SCAM
19-down – Mast — boom — gaff : SPAR
This crossword has in total 24 where 12 are across and 12 are down.