This crossword No. 1100 clues and answers were published on Sun 23 Oct 2016 and the puzzle can be visited by following The Guardian Speedy Crossword No. 1100 link.
All Across Clues and Answers:
1-across – Opening bet : ANTE
3-across – Dead end street : CULDESAC
8-across – Outlet : VENT
9-across – Extol : EULOGISE
11-across – Female driver : CHAUFFEUSE
14-across – Reliable : TRUSTY
15-across – Building extension : ANNEXE
17-across – Section of orchestra : PERCUSSION
20-across – Concluding part : EPILOGUE
21-across – Ballad : SONG
22-across – Improbable : UNLIKELY
23-across – Russian ruler : TSAR
All Down Clues and Answers:
1-down – Proponent : ADVOCATE
2-down – Secure liquor decanter : TANTALUS
4-down – Money-lender : USURER
5-down – Lethargy : DROWSINESS
6-down – Agitate : STIR
7-down – Head cook : CHEF
10-down – Out of trouble : OFFTHEHOOK
12-down – Fraught with danger : PERILOUS
13-down – Adolescent : TEENAGER
16-down – Authentic : ACTUAL
18-down – Boyfriend : BEAU
19-down – Medicine container : VIAL
This crossword has in total 24 where 12 are across and 12 are down.