Hi there,

This is another game where I came across an interesting tactic.

Well for some reason white is not allowed to capture the queen in chess.com... but the idea is the doubled rooks force a mate. My opponent saw this before I did (I think) and resigned.

Mate is not forced in that position fxg3 hxg3 Bh5 Rxh5 and now Ndf3 everything is defended and white should win

It's not forced, fxg3, hxg3, Bh5, Rxh5, Nf3 (N on d2, obviously,) and then Rxh2, Nxh2, Rxh2 mate (Bishop guards g1) is not possible as after the pawn and knight have moved the Queen guards h2.