Main motif of this puzzle: Highstriker mate
In high-striker mate, a rook or queen checkmates the king on the h-file (or a-file). The king cannot escape to the next file, because it is blocked in by its own pieces.
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.