Mate in 3 · No. 81 · ~1900 · Check

Rook, two bishops and knight

White to play and mate in three.

Position

White
king on c6, rook on g8, bishops on b7 and c1, knight on e7, pawns on a2, a3, b4, f2 and g2
Black
king on a7, queen on a5, rooks on d5 and d8, bishops on a8 and b8, pawns on a6 and b5