Saturday’s solution Black squares:

2, 4, 5, 8, 9, 11, 15, 19, 22, 25, 28, 32, 33, 36.

Across: Maiden, Voyage, Cloud, Bop, Trustworthy, Frock, Cache, Extrapolate, Jar, Forty, Surety, Writhe.

Down: Maybe, Evens, Inept, Outdoor, Chunk, Fit, Mortarboard, Old, Crazy, Aquatic, Eject, Enjoy, Graze.