This crossword No. 21729 clues and answers were published on Fri 29 Oct 1999 and the puzzle can be visited by following The Guardian Cryptic Crossword No. 21729 link.
All Across Clues and Answers:
1-across – Measure of tar? : HORNPIPE
5-across – Impact of special short whip : SPLASH
9-across – Sign of very little intelligence : MICRODOT
10-across – Price a pound of ribs : COSTAL
11-across – Sensation – effortless Victorian brilliance : GASLIGHT
12-across – Liquor quality : SPIRIT
14-across – Uncommonly loud, making it resonant : STENTORIAN
18-across – Office of a high court judge? : UMPIRESHIP
22-across – What makes Trent’s last marine mammal stagger? : TOTTER
23-across – Tube taken to theatre for three-act play : CATHETER
24-across – One gets up to see rainbows : IRISES
25-across – This creature is around no longer : DINOSAUR
26-across – Greek midshipman covered with oil : GREASY
27-across – Solemn, always, in Split : REVERENT
All Down Clues and Answers:
1-down – Great admiration of dwelling that is silver-lined : HOMAGE
2-down – The Hole in the Wall for a break : RECESS
3-down – In favour of appropriate percentage : PROFIT
4-down – Sibyl oppress the unorthodox? : PROPHETESS
6-down – Bear twins and think nothing of it : POOHPOOH
7-down – A hormone building a heavenly body : ASTERIID
8-down – BC, for example, in US? : HALFTONE
13-down – Suggestive mood : INDICATIVE
15-down – Stocktaking without authority? : RUSTLING
16-down – Battle-axe, one of the few in the second row : SPITFIRE
17-down – Release swarm of giveaways : FREEBEES
19-down – Select church circles over Home Counties : CHOOSE
20-down – Set far apart, fire from above : STRAFE
21-down – High peak for soldiers at the double in antitank setting : ARARAT
This crossword has in total 28 where 14 are across and 14 are down.