Analysis of Previous Game

My last post held a game which I lost in 19 moves, which I thought I should have won.  Well, as it turns out, I found a combination which would have finished the game extremely quickly.  I will illustrate it for you.

This move got a ! in my original analysis, as the Knight appears to be poisoned.  If I take it, the Queen comes to d1 with check and I lose either my Bishop or my Rook.  In the heat of a 2-minute chess match, I did not see that the Knight could actually be taken and played 13. b3??  In my initial analysis, I simply passed over this.  But I actually can finish my opponent off.  Here it is as a puzzle

That beats 13. b3?? any day.  I hope you enjoyed this, and I have learned that analyzing something several times helps.  Good luck in your chess and have yourselves a Merry Christmas