No...it's rather difficult to defend (as it turns out).
Hardest endgame to master?
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You mean bishop and king vs knight and king?
lol...no no, I meant with pawns on that one. :)
KBNvK really isn't that hard.
QvR is pretty difficult.
Q+PvQ is very hard too.
Sep 3, 2011
0
#26
checkmateibeatu wrote:
AndyClifton wrote:
The hardest one for me was always (and continues to be) N v B.
As far as exotic ones go, I once had Q v R B N (no pawns) against my computer (eek!).
That's because it's unwinnable!
listen to the 1300... he MUST know what he's talking about!
Skwerly wrote:
checkmateibeatu wrote:
AndyClifton wrote:
The hardest one for me was always (and continues to be) N v B.
As far as exotic ones go, I once had Q v R B N (no pawns) against my computer (eek!).
That's because it's unwinnable!
listen to the 1300... he MUST know what he's talking about!
I thought he meant bishop and king vs knight and king.
I think KRBvKR is a draw; it occurred in the longest recorded game in history. I'll bet that one would be hard to master.
RB v NN is hardest
@frrixz, I hear tell it took a computer 66 moves for KRB to beat KR. I don't know what the current rules are, but under the rules of no capture after 50 moves then it's a draw. Can someone update this for us?
zantimisfit wrote:
@frrixz, I hear tell it took a computer 66 moves for KRB to beat KR. I don't know what the current rules are, but under the rules of no capture after 50 moves then it's a draw. Can someone update this for us?
Not true, 50 moves without a capture or a pawn move is a draw.
Wow, fun username! 
Tim, I haven't played tournament chess for years so I don't know what the current rules are. But if no capture is made in 50 moves then the game is drawn. Have those rules changed? I only raised the issue of a 66 move mate with KRB v. KR because the question came up whether or not the 50 move rule should be amended due to the advancement in computer chess. If it takes a computer 66 moves to affect a mate, then should not this opportunity extend to human competition? I don't have an answer, I am just raising the question.
Andy! You're a first class nut. But it's nice to know someone else remembers one of the best episodes of the old "Outer Limits."
May 29, 2013
0
#35
B+N+K vs K is not hard to win if you know a system that is easy to implement like the triangles one but to win it as efficiently as possible is extremely difficult
Oh yeah, it's a breeze. 
I guess it is R+B vs R, but it does not matter. These endgames are so rare that it does not worth serious learning. It is important to learn practical endgames, which will appear often. So I would say that the Rook endgames are the hardest, there is a big draw percent. (Opposite coloured bishops are another endgame, that is usually draw)
Edmar Mednis has estimated that 4% of R+B vs R starting positions in games are theoretical wins, although probably a higher percentage of those games end in wins. The longest theoretical win is 59 moves.
shoopi wrote:
Speaking of which, does anyone know of a free online source to learn QvR endgame technique?
This is very hard, even top gm failed sometimes to win this. I read that a top gm (Svidler, if I remember correctly) draw this game by 50 move and he had the queen.
Patscher wrote:
shoopi wrote:
Speaking of which, does anyone know of a free online source to learn QvR endgame technique?
This is very hard, even top gm failed sometimes to win this. I read that a top gm (Svidler, if I remember correctly) draw this game by 50 move and he had the queen.
Sounds like Browne (against a computer in the--relatively--old days).
Maybe not, but it certainly was loseable...I lasted about 25-30 moves.
Did you lose it on purpose or something?