Checkmate with a nite and bishop

@brrr said
https://en.wikipedia.org/wiki/Bishop_and_knight_checkmateGame 13055535

it would have been nice to have a little commentary by you
otherwise what purpose was served

@brrr said
https://en.wikipedia.org/wiki/Bishop_and_knight_checkmateGame 13055535

Why the under promotion?

@coquette said
Why the under promotion?

In order, I guess, to practice the knight and bishop endgame.

@lemondrop said
it would have been nice to have a little commentary by you
otherwise what purpose was served

@Lemondrop: I'll provide one for your benefit. 😉

Attacking King provides a corridor wall as well as defense for the bishop.
Knight covers the escape square.
Bishop delivers the mate.
Losing King cooperates by ending up in one of the two corners where he shouldn't go.

@Brrr: Kind of snarky to underpromote (especially to a bishop) and still win. Just showing off? 😉 Well done!