Mate in 3 · No. 378 · ~2100 · Check

Two rooks, bishop and knight

White to play and mate in three.

Position

White: king on h4, rooks on a2 and b8, bishop on d7, knight on d3, pawns on a3, c4, d4, g2 and g3
Black: king on a4, queen on c3, rook on c7, bishop on a6, pawns on a7, b3, b4, b5 and c6