Back rank mate in 3 moves
White to move
White Pieces: Kg1 Qg3 Rc1 Bd3 a2 b3 d2 f3 g2 h2
Black Pieces: Kg8 Qe6 Bb6 Bd5 Nh5 a7 c5 c6 d4 f7 g7 h6
White to move
White Pieces: Kg1 Qg3 Rc1 Bd3 a2 b3 d2 f3 g2 h2
Black Pieces: Kg8 Qe6 Bb6 Bd5 Nh5 a7 c5 c6 d4 f7 g7 h6