Concentration doesn't have enough letters!!
dauv your lucky you have just the 5 to get. I've been at it for ages and have only answered 10 clues . Aaargh!!
Here are my last clues to get! ANY help much appreciated!
1a Having a rib or ribs, or resembling ribs(8) ????A?E?
12a A sharp mountain ridge with steep sides(5) ????E
26a In hunting, a difficult fence(coll) (6) R?S?E?
1d A castle or fortress in a North African town, or the area around it (6) ??S???
2d A piece of writing, especially a begging letter (7) ??R???E