As Black, I had the position diagrammed above in an online blitz game a few days ago. I blitzed out 1...Nfxh2+? without much thinking - how bad can it be to take a free pawn with check? Answer: very! After 2.Kg2, White threatened to win material with either 3.Bxg4 or 3.Rxh2, and I needed lots of help from White to ultimately win the game. Looking at the position after the game, I realized that I had missed an immediate win! What is it?