Use the Poison Queen

In their comprehensive treatise on crazyhouse theory, crosky says, and I paraphrase, "Make no unnecessary pawn moves."

This game is a great example of a "necessary" pawn move, creating a forced mate when the opponent decides to swallow the poison queen. A great example of sacrificing the queen for a positional advantage with black playing 19...@E3 to force mate in 4.

@wateenellende talks about this in their recent blog post The Mariorton queen sac idea.