Gothamchess would be proud of my move here

To be fair I didn't calculate this all the way. This came out of the "boring" London system opening.

I JUST BEAT NELSON

I finally managed to reach 2000 puzzle elo

Best next move?

I am black

One of the most satisfying fork I have ever got

Yes

.

Let's hope they're gone for good!

Literally did 20+ premoves in last 5 seconds and luckily last queen check move was a mate at 00

Couldnt find the mate. Help!

Lost on time.