Adjacent: Queenside

Same position, opposite flank. The king on b1 and the rook on a1 stand right next to each other — and many are convinced you can't castle when adjacent. You can: the 960 rules don't forbid it. The king only has to step to c1, and the rook will hop over him to d1. Execute queenside castling.

King c1, rook d1. Adjacent castling — a test you passed on the first try.