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Have you ever seen something like this?



16...hxg3 looked too fun not to play, but I have never seen this idea used before. Anybody?
if by 'this idea' you mean threaten a capture (hxg3 threatens gxh2) which forces the king to go into a place it will get forked OR allows the pawn to promote

Then I can't think of having seen anything like it before.
Nice idea though, should have been rewarded by making the killing difference (e.g. if they had a Rook on g3 so you win an exchange rather than effectively trade Knights and Pawns)