This crossword No. 879 clues and answers were published on Sun 29 Jul 2012 and the puzzle can be visited by following The Guardian Speedy Crossword No. 879 link.
All Across Clues and Answers:
1-across – Worldwide : GLOBAL
4-across – Lively ballroom dance from Brazil : SAMBA
7-across – South American rodent : AGOUTI
8-across – Gambol : FROLIC
9-across – Left the field : FLED
10-across – Joined : SIGNEDUP
12-across – Stroke of good fortune : SLICEOFLUCK
17-across – I’m so Arab : AMBROSIA
19-across – Desperate : DIRE
20-across – All in one piece : INTACT
21-across – American songbird : ORIOLE
22-across – Clothes horse : AIRER
23-across – Mark of infamy : STIGMA
All Down Clues and Answers:
1-down – Tight-fitting spectacles worn for protection : GOGGLES
2-down – RC organization which maintains, among others, the University of Pamplona : OPUSDEI
3-down – Obvious, on the surface : ASITSEEMS
4-down – Femme fatale : SIREN
5-down – Tuneful : MELODIC
6-down – Reply in the affirmative : ACCEPT
11-down – Run, drive, etc as fast as possible : GOFLATOUT
13-down – Edible marine crustacean : LOBSTER
14-down – Taking apart : UNDOING
15-down – Finnish region fought over with Russia, immortalised by Sibelius : KARELIA
16-down – Cooked meat or vegetables served with a soft tortilla and grated cheese : FAJITA
18-down – Happen : OCCUR
This crossword has in total 25 where 13 are across and 12 are down.