This crossword No. 793 clues and answers were published on Sun 28 Nov 2010 and the puzzle can be visited by following The Guardian Speedy Crossword No. 793 link.
All Across Clues and Answers:
5-across – Flamboyance, skilful display : SHOWMANSHIP
7-across – State of constant change : FLUX
8-across – Cricket delivery turning in to the right-hander : OFFBREAK
9-across – Bauble : TRINKET
11-across – Strong point : FORTE
13-across – Choose : ELECT
14-across – Miner : COLLIER
16-across – Festival : CARNIVAL
17-across – Landing stage, wharf : QUAY
18-across – … wait for no man : TIMEANDTIDE
All Down Clues and Answers:
1-down – Practical joke : HOAX
2-down – Enable, authorise : EMPOWER
3-down – Extinguish : SNUFF
4-down – Black residue of burnt wood : CHARCOAL
5-down – Independent : SELFRELIANT
6-down – Abide by the rules : PLAYTHEGAME
10-down – Soubriquet : NICKNAME
12-down – Conspire : COLLUDE
15-down – Pertaining to birds : AVIAN
17-down – Leave : QUIT
This crossword has in total 20 where 10 are across and 10 are down.