This crossword No. 12100 clues and answers were published on Thu 19 Feb 2009 and the puzzle can be visited by following The Guardian Quick Crossword No. 12100 link.
All Across Clues and Answers:
1-across – Myopic : SHORTSIGHTED
9-across – Not warranted : UNDUE
10-across – Impish troublemaker : GREMLIN
11-across – Well-behaved : GOOD
12-across – In these times : NOWADAYS
14-across – Ridiculous : ABSURD
15-across – Parody : SENDUP
18-across – The Granite City : ABERDEEN
20-across – Defeat : LOSS
22-across – African spear : ASSEGAI
23-across – Tree — having lived longer : ELDER
24-across – Longest digit : MIDDLEFINGER
All Down Clues and Answers:
2-down – Ghastly : HIDEOUS
3-down – Stink : REEK
4-down – Register as unemployed : SIGNON
5-down – Small bombs : GRENADES
6-down – City in Oklahoma : TULSA
7-down – Doughy confection with filling of jam, apple etc : DANISHPASTRY
8-down – Device to warn of intruders : BURGLARALARM
13-down – Wasteful — gold pair : PRODIGAL
16-down – Involving a final desperate attempt : DOORDIE
17-down – Removal of stress : RELIEF
19-down – Abated : EASED
21-down – Seabird : TERN
This crossword has in total 24 where 12 are across and 12 are down.