Main motif of this puzzle: Lawnmower mate
In lawnmower mate, a major piece (queen or rook) delivers checkmate on the edge of the board, and a second major piece prevents the king's escape to the adjacent rank or file.
Learn more in this guide.
The hint button is in beta test. We recommend to use the button only after you've thought about the puzzle for some time without finding any idea.
Read more about the hint button in this blog post.