This crossword No. 12655 clues and answers were published on Wed 01 Dec 2010 and the puzzle can be visited by following The Guardian Quick Crossword No. 12655 link.
All Across Clues and Answers:
5-across – Original plan : BLUEPRINT
8-across – Small liquid blob : DROP
9-across – Software protection for computer : FIREWALL
10-across – Affected by partiality — dishonest : UNFAIR
11-across – Formal headdress : TOPHAT
13-across – Reviewer : CRITIC
15-across – Non-stick material : TEFLON
16-across – Horticulturist : GARDENER
18-across – See 17 : BACK
19-across – Bell flower : CAMPANULA
All Down Clues and Answers:
1-down – Irreverent : FLIPPANT
2-down – Young cow : HEIFER
3-down – Mountain where the Ark grounded : ARARAT
4-down – Chew : GNAW
6-down – Arterial thoroughfare : TRUNKROAD
7-down – Simultaneously — immediately : ALLATONCE
12-down – Large fungus : PUFFBALL
14-down – Savoury snack : CANAPE
15-down – Available for leasing : TORENT
17-down – Snag : DRAW
This crossword has in total 20 where 10 are across and 10 are down.