This crossword No. 917 clues and answers were published on Sun 21 Apr 2013 and the puzzle can be visited by following The Guardian Speedy Crossword No. 917 link.
All Across Clues and Answers:
1-across – Hairless : BALD
3-across – Board game : SCRABBLE
9-across – Mothball ingredient : CAMPHOR
10-across – Style of music/dancing : DISCO
11-across – Make up for : ATONE
12-across – Unremarkable : NORMAL
14-across – Formation of stars : CONSTELLATION
17-across – Causing strain, annoying : TRYING
19-across – Musical drama : OPERA
22-across – Refuse from threshing : CHAFF
23-across – Nunnery : CONVENT
24-across – Countermand : OVERRULE
25-across – Remain : STAY
All Down Clues and Answers:
1-down – Accidentally : BYCHANCE
2-down – Intermediate state; obscurity : LIMBO
4-down – In order of occurrence : CHRONOLOGICAL
5-down – Viper : ADDER
6-down – Variety of rice : BASMATI
7-down – Greek god of love : EROS
8-down – Menace : THREAT
13-down – Foot soldiers : INFANTRY
15-down – Tell a story : NARRATE
16-down – Consecrate : ANOINT
18-down – Deduce : INFER
20-down – Strain : EXERT
21-down – Reverberate : ECHO
This crossword has in total 26 where 13 are across and 13 are down.