Well your opponent blundered off a lot of pieces

That was a nice checkmate, the opponent was busy getting pawns while their king was in trouble. On move 34 I see that the only square the king can move into is h2. Once the king is as restricted as it is now, that's the time to start looking for a forced checkmate.  Good work CaptainPike for keeping your eye on the prize while the opponent was off picking flowers in the sun.

Why 4... d6??

Doesn't 8... Nxd5 win a pawn?

11. Bh6 is a weak attack and 12. h3 gives you back the piece.

Anytime from move 30 you could have mated white the same way you did at the end.

Nice game.

Nice win!

Nice finish. One of the hardest things to learn in chess is how to win a won game.  

So true. When I know I've got the win, then sometimes a new opponent appears; myself

Excelent!! Good Game Capt!