This crossword No. 10513 clues and answers were published on Fri 16 Jan 2004 and the puzzle can be visited by following The Guardian Quick Crossword No. 10513 link.
All Across Clues and Answers:
1-across – Very least possible amount : MINIMUM
8-across – Shorten : ABRIDGE
9-across – Scottish town – bright pattern – Unionist Ian : PAISLEY
10-across – Embarrassing schoolboy gaffes : HOWLERS
11-across – Moral principle : ETHIC
13-across – Clumsy : HAMFISTED
15-across – Inexpensive : DIRTCHEAP
18-across – Edible bulb : ONION
21-across – Ice cream flavour : VANILLA
22-across – Dark cool patch on the surface of our nearest star : SUNSPOT
23-across – Chuckle : CHORTLE
24-across – Prize with ribbons : ROSETTE
All Down Clues and Answers:
1-down – Tree whose leaf features on the flag of Canada : MAPLE
2-down – Whinny : NEIGH
3-down – Dairy product sold in bars : MILKCHOCOLATE
4-down – Pandemonium : MAYHEM
5-down – Marks for good behaviour : BROWNIEPOINTS
6-down – Time approaching Christmas : ADVENT
7-down – Separated fibres – ragged : TEASED
12-down – Cab : TAXI
14-down – Sound returning some moments later : ECHO
15-down – Gadget : DEVICE
16-down – Kidnapper’s demand : RANSOM
17-down – Rubber : ERASER
19-down – Resource : INPUT
20-down – Saltpetre : NITRE
This crossword has in total 26 where 12 are across and 14 are down.