SOLUTION TO PRIZE CROSSWORD No 15,805:

ACROSS: 6 Ancient history. 9 Ski run. 10 Recently. 11 Etcetera. 13 Shorts. 15 Elated. 17 Asimov. 19 Select. 20 Prophecy. 22 Preserve. 24 Tin can. 26 Shetland ponies. DOWN: 1 Market research. 2 Scar. 3 Seance. 4 Circuses. 5 Stun. 7 Tartar. 8 Relative clause. 12 Erase. 14 Oomph. 16 External. 18 Spread. 21 Option. 23 Site. 25 Nail.