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Mate in 9

Not too hard to see. In process, we managed to sacrifice two queens in one move.

@MrPushwood said in #3:
> If it's "not hard," why post it?

That's what she said! It was meant to be a DM...
It's not linear though and quite possible to mess up with 30 seconds on the clock. Every single move by white had to be precise, otherwise I could fail this checkmate in 9.