Black blunders with Rxh2. This puzzle doesn't finish in mate. Capture as many Black pieces as possible with Checks and Captures. Read post #1 first. At the end White will have several passed pawns to eventually promote and win the game.
Checks and Captures
White uses Checks and Captures to close the mating net. The puzzle ends at M2 due to the multiple options to complete the checkmate.
Using checks and captures, White captures the Black Rook and Black Queen without losing its own Queen and Rook.

does anyone else see checks and captures being played out on the bedroom ceiling like in queen gambit film?
I wonder if this means I'm making really good progress , or am I going around the twist?. That is the question
Black is ready to Mate-in-1 unless White can find a way to mate White in 12 moves using checks and captures.
Find Mate in 11 moves using checks and captures only. At M2 use a piece other than the Queen to check the Black King.
This puzzle is 9 moves. It stops at M3 because there are multiple ways to checkmate in 3 moves. So, the puzzle would be unsolvable. Use the checks and captures priority guide in post #1 but apply it with commonsense.