This crossword No. 671 clues and answers were published on Sun 27 Jul 2008 and the puzzle can be visited by following The Guardian Speedy Crossword No. 671 link.
All Across Clues and Answers:
1-across – Three-time : THRICE
4-across – Kind of heavy jacket : PARKA
7-across – Fictitious name : ANONYM
8-across – Shard : SLIVER
9-across – ‘Cogito, —- sum’ : ERGO
10-across – Privately : INCAMERA
12-across – Abandoned in battle : LEFTFORDEAD
17-across – Dreamy piano peace popularised by Chopin : NOCTURNE
19-across – Charge : TASK
20-across – Walk with long steps : STRIDE
21-across – Body of artistic work : OEUVRE
22-across – Saltpetre : NITRE
23-across – Dessert : AFTERS
All Down Clues and Answers:
1-down – Natural thread climbing plants produce to attach to a support : TENDRIL
2-down – End a phone call : RINGOFF
3-down – Receive as one’s share, or receive incidentally : COMEINFOR
4-down – Bohemian dance : POLKA
5-down – I arrive! : RIVIERA
6-down – Aviator : AIRMAN
11-down – Hauled away : CARTEDOFF
13-down – Passage selected from a larger work : EXCERPT
14-down – Force out : EXTRUDE
15-down – Walks out on : DESERTS
16-down – Complete agreement : UNISON
18-down – Excessive : UNDUE
This crossword has in total 25 where 13 are across and 12 are down.