SOLUTION TO PRIZE CROSSWORD No 15,556:

ACROSS: 6 Bread and butter. 9 Events. 10 Cetacean. 11 Aspirant. 13 Amazon. 15 Stitch. 17 Strata. 19 Pidgin. 20 Achiever. 22 Singular. 24 Regime. 26 Unconventional. DOWN: 1 Above suspicion. 2 Dean. 3 Odessa. 4 Abstract. 5 Otic. 7 Nicety. 8 Evaporated milk. 12 Icing. 14 Adage. 16 Conclave. 18 Barren. 21 Hermit. 23 Gaol. 25 Gong.