Since... 1994!

3. Find mate in 5 moves (5 chesscoins)

(White: Kg1, Qa2, Re7, Bb7, Be3, e4, f3, g2, h2. Black: Kg8, Qb8, Rc8, Nb2, Nd3, a5, e6, f7, g7, h7.)

Black moves and mate in 5