I'm a newish player. Still have a lot to learn. I was trying some weird opening and eventually their queen was threating the back side of my board. Also here is a link to the full game. https://lichess.org/bRp1GQXk/black

As you can see H6 not only allows me to block the queen by being taken by the bishop or by the pawn.

Chesssigma is saying knight to H6 would have been better. If I would have done that. Queen could have taken pawn on G5 for free.

Although now I realize my queen could have protected the pawn. Didn't see that but to me the pawn move was the better option