Mate in 3 · No. 340 · ~1700 · Check

Rook, bishop and knight

White to play and mate in three.

Position

White
king on b8, rook on g3, bishop on e1, knight on a5, pawns on b3, c2, e4, f4 and g2
Black
king on b6, rooks on a4 and d7, bishop on a6, pawns on a7, b5, d4 and e5