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King, Bishop, and Knight vs. King speedrun

#1
Inspired by the nice lesson by @arex (lichess.org/practice/checkmates/knight--bishop-mate/ByhlXnmM/D23EYigW), I decided to work on my B+N vs K technique a bit and get it to the point where I could teach a technique simple enough that it could be done more or less without thinking after some practice.

After some practice, I was able to do it quite quickly. My best time so far vs. Stockfish level 8 is 8.0 seconds: lichess.org/sQXzEd4K/white#63 (or on YouTube if you prefer - www.youtube.com/watch?v=b0iEqen7L24&feature=youtu.be)

There is definitely room for improvement here. Has anyone already done it faster? If not, I know it can be done more quickly. I wasn't super accurate with my mouse and had to retry a couple of moves. Also, if someone really wanted a super fast time, they could keep trying to premove everything until the computer cooperates and always moves where you hoped it would :)
#2
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#3
8 seconds to mate with knight and bishop?
I still can't do queen against rook, and queen against knight gives me trouble. :(
#5
Deletang's triangles method makes it much easier to go to a position where you can also apply the classical W method if you want.
Of course, once you know it perfectly, you will find six month later that you have forgotten everything about it.
#6
@Allonautilus - You're probably doing better than you think!

Queen vs. Rook is harder than KBN vs K for most people - at least against the computer, which will allow the rook and king to become separated if there are no forks.

Aside: I actually had to win with Q vs R in a tournament game last weekend! It was Q vs R+P and I first had to pick off the pawn.

KQ vs KN will be easier for most people, but for me it's harder to speedrun it in 8 seconds, because it's harder to reduce it to a formula where most of the moves can be premoved. Maybe there's a way to make it more formulaic, though? I'll have to think about it...
#7
Maybe so, I tried KBN vs. K (after doing the study), but could not make progress, will go over it again, KQ vs. KB is easy, as is KBB(opposite colour) vs. K.
I wish there were tutorials for the other mates as there is for KBN vs. K.
#8
@kifaru -
It's true that it's easy to forget. I learned how to do it 20 years ago, but I didn't learn it in an ideal way, never practiced it, and never taught it. Then, 5 years ago, I actually got it in a tournament game with 2 minutes left on my clock and failed to win it. That hurt! I learned how to do it again after that, but I still didn't feel great about my method & being able to explain it to others.

I do teach sometimes, and I'm occasionally asked to show how to do it. I think that if you've got it down so pat that you can teach it, and your method is so simple that you can practice it in only 8 seconds (OK, usually more like 15 on average) then it's harder to forget, and you can practice it a few times per year without much loss of time.
#9
About the endgame not coming up much in practice. Yes, but a few things:

1) Most of us won't be chess professionals. We want to improve at chess, but we also want to have fun. Sometimes things that are fun (for some people) also lead to improvement, and that's great, but some chess stuff is just for fun and won't really help you much. And that's OK.

2) If you know these sort of endgames well, they'll come up more often. You'll steer more often toward theoretical positions if you know you can win them (or draw them if you're worse). I haven't played in that many tournaments, and I've already had both KBN vs K and Q vs R in my practice. I've had RP vs R more than 20 times already. But I am the sort of player who enjoys these sort of endgames and I'm often happy to play openings leading to += endgames. If you aren't then you'll get this stuff less often.
#10
Rook ending are the most common
GM's probably will never see kbn v k
But low rated player's will see Rook's

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