King, Bishop, and Knight vs King (Please Help)

I don't think I played well, but I managed to win

i don't think it is forced checkmate

You should have been able to corral the king from along the edge (8th rank) into a8, the white square, since that is the color of your bishop and with only B+N you must mate in a white-squared corner (assuming best play from your opponent, which in this case didn't happen!). You let the king escape to the center, then you got lucky with a mate on the edge. B+N is a forced mate, though. (Try Q versus R, which is even trickier!)

This is a tricky mate and I'm not sure I remember all the details of how to do it, but here's a link to the best video I've seen on that topic, posted by one of the members of this site:

http://www.chess.com/forum/view/endgames/checkmate-with-knight--bishop

...and here's the actual YouTube video...

How to Checkmate with Knight and Bishop | Chess Endgame Basics #1
https://www.youtube.com/watch?v=hWwuy-aiK1M

P.S.--I'm interested in that mate and games that lead to it. Would you mind posting your entire game?

i don't like it

because it is easier to use a k + q vs k

the losing king must be forced to the same color corner as the bishop