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Created on December 12, 2011 |
7811 Votes | 56 Comments
I learned the two bishops mate in a Chess Mentor lesson, but I do not know how to checkmate with a bishop and a knight. Does anyone know?
Both, but sometimes knight only takes me a while
I know how to do it with 2 Bishops and I know its posible to do it with B and N I just dont know how.
Thanks. I believe your mating example [above]: K + 3N vs K + P[?] ('here', the pawn can be captured freely [in most positional instances] without stalemating consequences [as three knights can force mate vs a lone king]) - although quite possible, would not only be more of a rarity, but in fact should be easier than: K + 2N vs K + P, described above.
It would be interesting nonetheless if perhaps chess.com could host some of the more specific (i.e. [theoretically] challenging) endgame [mating] problems (e.g. K + [K-]B + [Q-]B vs K + N) into a 'tournament'-type format, 'here'.
Excellent spiel! Now I need to go learn how to checkmate with K + K + K v K + P! :P Never thought that was possible..
it's impossible to mate in with b+k if you make one mistake
1 mistake when up B+N will lead to a draw
B+N+K vs. K is easy for me because I've mastered it. I'm surprised that that GM couldn't pull it off. It seems that a strong player should be able to do it without any previous study of it.
I'm fairly confident that I could do it at least 95/100 times with 5 minutes on the clock.
B and N is pretty easy, even though my rating isn't high, if you continue to study it, you will find that it is easier than it looks
The Bishop, Knight, and King team is an intricate mating net where one slip can let the enemy King slip away or become stalemated. Remember this mate is called "basic" and is portrayed in many books along with all the other "basic" mates.
It's not surprising that B+N vs King ending could pose a challenge even at the GM level. It's the end game, and thus Chess fatigue is a real factor, especially if one has not previously studied the technical aspects of this specific endgame. The fifty move rule often arises due to the fact of taking several moves just to set up the necessary mating net.
2 bishops versus a lone king is relatively easy to win, but B+N requires much more skill to manuver into a mating net.
Its funny because I knew knight and bishop and was unsure about the 2 bishops, until I thought about it, @armins1997 yes you can, you have to get the king stuck in the two corner spots of your bishops color using knight and then move your bishop in after your knight in the spot right by their king while gaurding your bishop with your king.
You can win a game with 2 B but not with a B and N
I couldn't select any of the 4 answers: To start with, its not necessarily a "piece of cake" to win with a bishop and knight. And to say that I haven't a clue isn't true either, because I can beat my computer from any starting position with Knight, Bishop and King against King. But this is not the same as beating a human opponent. The computer makes some poor moves when the position can't really be won by me, due to the 50 move rule. If the attacking side has the 3 pieces crammed into one corner at the start, and the opposing king is in the centre, it requires a lot of moves to set up walls around the defending king. Once the king has been surrounded, the noose can gradually be tightened until (through zugzwang) he is forced onto one side of the board. Even from here, it can take up to 20 moves (for me) to slide the defending king along to the checkmate corner. A competent opponent could make this whole process take more than 50 moves.
So from a really unfavourable start up position, against a good opponent, I think that the only ways to win are to perform brilliant calculations (which would be beyond a moderate player like myself) or to memorize ways to win from dozens (or hundreds) of start positions.
Though I don't know if this is possible...
Maybe this is what Karaflof is talking about...
Karaflof: No, you can't even set up a mate with lone K+B v. K. It's ALWAYS a draw.
Ben-Oni: It's true! http://www.chessgames.com/perl/chessgame?gid=1533865
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