FREE - In Google Play
FREE - in Win Phone Store
I really recommend to read seirawan explanation in his winning chess ending.
I struggled with this mate, but after some insights of the book I mastered it, now I can do it 100% of the time, from any starting position.
You just have to memorize the techniques:
1.The Barrier with the bishop and knight (and king) that force the king to the corner
2.The initial classic position (in the wrong corner) and the the technique to push the king to the right corner
3. The final mate
2 is the trickiest and actually has 3 techniques that you should master.
When you do it, it becomes easy.
[Event "?"][Site "?"][Date "2017.09.16"][Round "?"][White "?"][Black "?"][Result "1-0"][FEN "5k2/5N2/2B2K2/8/8/8/8/8 w - - 0 1"]
1. Bd7 Kg8 2. Bf5 Kf8 3. Bh7 Ke8 4. Ne5 Kd8 5. Ke6 Kc7 6. Nd7 Kb7 7. Bd3 Kc6 8.Be2 Kc7 9. Bf3 Kd8 10. Kd6 Ke8 11. Bh5+ Kd8 12. Nc5 Kc8 13. Bf7 Kd8 14. Nb7+Kc8 15. Kc6 Kb8 16. Kb6 Kc8 17. Be6+ Kb8 18. Nc5 Ka8 19. Bd7 Kb8 20. Na6+ Ka821. Bc6# 1-0
Yes I know how to do it. My problem is that my new version of Tarrasch/Rybka doesn't. (The old one did).
Your move 13 is a wasted move by the way. Quicker is:
13. Be8 Kd8 14. Bb5 Kc8 15. Bd7+ Kb8 16. Kc6 Ka7 17. Kc7 Ka8 18. Kb6 Kb8 19. Na6+ Ka8 20. Bc6#
If you start at move 5 instead, the whole thing should be over by move 18.
If 9. Kg8 then 9... Kh6 10.Kf8 Ne5 11. Ke7 Kg7 12. Kd6 Nd3
No 10. Kh7.
MARattigan wrote: No 10. Kh7 The king cannot go h7 as the black king is on h6.
Apologies. I should have read what you wrote rather than what I thought you wrote.
The point is, if you want Delétang's starting position then instead of 8...Bb3 you should play:
8...Ne5 9.Ke7 Bb3 10.Kd6 Nd3 11.Ke7 Kg7 this is quicker. But quicker still is 8...Ne5(d6) 9.(whatever) Nc4.
goodknight0badbishop - knowing how isn't good enough over the board
maybe in time crisis
I originally learned the N + B mate with Reuben Fine's "Basic Chess Endings" which is not the clearest explanation, but it was good enough and I have enjoyed demonstrating it from time to time.
The explanation in Jesus de la Villa's 100 Endgames You Must Know is the best I've seen - it gives 10 general points compared to 4 in Seirawan's Winning Chess Endings, and it gives you patterns like this to show you what you want to achieve as push the opponent's King to the edge of the board then herd him to the corner with the same color your bishop travels on: