Assassinate their own king and declare themselves a republic

I'm not good enough at chess to see long lines or anything, but in chess puzzles all I know is to think about forcing moves. In this case I see the rook to f3 or knight to g4 for check, but neither of those seem to accomplish anything. So now I read the hint, and I think it must be something that looks silly immediately. Rook to d3 forces the queen to move, which looks silly since it blocks white queen's line of sight on the e pawn, but now I realize if black actually takes the check then you move the rook to f3 and take the queen. So instead black would have to move the queen back which is just generally kind of a weak move to have to make.

But I don't see a way to force material or a particularly strong position here, that's all I see.

...

Ok, viewing the answer, I guess that's all there was. Puzzles with no clear material to win are hard :(

I know nothing about chess but I’d have said move the castle one right to put the king in check, then drive the pawns up to pressure it, or move the castle 1 left and pick off work through the two bishops.

considering it's magnus, getting drunk seems like a good choice.

Okay but this isn't white's "best" move because it requires black to blunder and lose. Black doesn't have to take that pawn and taking the pawn leads to a fairly obvious queen trap. I get that it's speed chess but in a puzzle setting even to me, a weak ass player, I wouldn't take that pawn.

Rook d3, then d1 if the enemy queen decides to not die or smth