Bishop, Knight & King versus King.

Nobody has any problem AFTER that position is reached goodknight0badbishop, the problem is getting to the position where the black king is in the corner.

That is the point. One must have the skill to do so.

You can transpose to Delatang's Triangles. You can checkmate faster.

1: Can you show how that works in the relevant position instead of an easy position.

2: I'm pretty sure if black hadn't run straight towards h1 it would've taken a lot longer to mate him.

@GoodKnightOBadBishop
Hi and thank you for trying out Deletang's Triangles.
I'm glad that I was able to convey to somebody the existence of that method.
Deletang's Triangle's are so good - that I'm thinking maybe -
that players don't even have to consider the edge of the board idea AT ALL.
Regardless of where the lone King is -
you just keep him in the ever- shrinking Triangular zone.
Where I stand now on it though - (almost literally) - 
is that rather than starting the Triangles right away (mechanically) -
I'd rather bring my King to one of the four central squares of the board -
which is Relatively Easy - and then start the Triangles after that.

Its beginning to appear that once that has been done -
the attacking player will only have to shrink the Triangle a maximum of twice.
If that.  More like once. 
In other words a maximum of three Deletang's Triangles.
And it might only be two.  
DT's are Neat - once they're caught onto.  

Or even faster:

After after Black's obvious 6...Ke5 in your example, can you still do it in 19?

I'll offer to play Black against you in this one if you like.

Black to move.

Black's 4...Kg4  is a nice example of what I called correct play in post #116. It's inaccurate because it closes the position (see https://en.wikipedia.org/wiki/Bishop_and_knight_checkmate#Overview), but White's only move to keep the position closed is 5.Ke5 which white could easily fail to see (as indeed he did). 

Quote: You give me a position and I can checkmate from there.

I assume you want a position that's already won?

Yeah. But not easily won.

And I've also been wondering what that plus sign beside your username is.

This ending is, like anything else, easy when you know how (from any won position). I didn't put the plus sign there - I think it's something to do with Switzerland. (What's that thing next to your username by the way.)

Oh.

The American Flag is what is next to my username.

It is more difficult to do it in the shortest number of moves against accurate defence, but even that would be easy if you knew how.

Oh.