check mate

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6th April 2008, 08:32am
#1
by chrisie
United Kingdom
Member Since: Feb 2008
Member Points: 17

can you check mate with just a bishop and a king with no chance of getting a queen moving a pawn when thats all each player has and how long can it go on for when one player doe'sen't want to draw

6th April 2008, 08:39am
#2
by bastiaan
eindhoven Netherlands
Member Since: Dec 2007
Member Points: 440
50 moves without promotion or a change in pieces on the board is a draw as well
6th April 2008, 08:44am
#3
by chrisie
United Kingdom
Member Since: Feb 2008
Member Points: 17
thank you for your help chrisie
7th April 2008, 08:03am
#4
by grolich
Israel Israel
Member Since: Mar 2008
Member Points: 234

If your question is: can you mate when the ONLY material on the board is:

one side has K+B, and the other has just K, then NO, you cannot mate, ever, even without the 50 move rule. There is just no mate position.

 

 

If either side has more material on the board. It depends on it, of course. 


7th April 2008, 12:06pm
#5
by Checkers4Me
Cincinnati United States
Member Since: Dec 2007
Member Points: 302

cannot mate with a single minor piece or with 2 knights.

I hear it is very difficult to mate with just 2 bishops.

 

someone correct if i'm wrong.


7th April 2008, 12:09pm
#6
by Loomis
Durham, NC United States
Member Since: Oct 2007
Member Points: 2186
Checkers, I think for most people mating with 2 bishops is easier than mating with Bishop and Knight.
7th April 2008, 12:32pm
#7
by God2
Malaysia
Member Since: Feb 2008
Member Points: 1082
one knight,one bigshop or even two knight they will be stalemate!
7th April 2008, 12:41pm
#8
by Quiet_Soul
Jutland Denmark
Member Since: Feb 2008
Member Points: 91
bastiaan wrote: 50 moves without promotion or a change in pieces on the board is a draw as well

Or 50 moves without a pawn move.


7th April 2008, 12:45pm
#9
by likesforests
United States
Member Since: May 2007
Member Points: 3181

FIDE 9.6: The game is drawn when a position is reached from which a checkmate cannot occur by any possible series of legal moves, even with the most unskilled play. This immediately ends the game, provided that the move producing this position was legal.

 

If K+B vs K is all that is left, the game ends immediately--it's a draw. 

 

checkers4me> cannot mate with a single minor piece or with 2 knights.

 

Correct, if neither side has any other material. Two knights... and rarely even one knight... can mate an opposing K+P.  ;)

 

checkers4me> I hear it is very difficult to mate with just 2 bishops.

 

If you've never done them before, they can be challenging, especially under time pressure. The good news is, they only take a little time to master. Mastering the B+B mate or B+N mate is much, much easier than mastering, say K+R+P vs K+R.


7th April 2008, 12:50pm
#10
by benws
United States
Member Since: Oct 2007
Member Points: 1317
yeah, king+knight vs king is a draw, as well as king+bishop vs king. i once was at a tournament where one guy sacrficed his knight to achieve the former, and if the rule that ended the game immediately was not there, he would have flagged. so this can be helpful.
7th April 2008, 01:45pm
#11
by Checkers4Me
Cincinnati United States
Member Since: Dec 2007
Member Points: 302

Now that I know mating with 2 bishops (no jokes please) isn't as tough as I thought, I will go work on it.

So much endgame material to learn....


6th May 2008, 07:53am
#12
by ares
sta.maria,bulacan Philippines
Member Since: Nov 2007
Member Points: 9
i believe two knights or two bishop can mate ive seen that happen!
6th May 2008, 08:04am
#13
by Sunshiny
United States
Member Since: Jan 2008
Member Points: 733
I heard that it was possible to mate with two knights, but it is unforced.
6th May 2008, 08:08am
#14
by Azures
United States
Member Since: Feb 2008
Member Points: 38
Yea, King and bishop, or King and knight, with no other material support is impossible to mate opponent's King.  Must have at least one other piece available to work the mate pattern.  Even one extra pawn in support (if the pawn is fortunate enough to be in the right position), makes it possible to mate with a King/bishop or King/knight combination...
6th May 2008, 08:14am
#15
by romanccm
Rural New York State United States
Member Since: Nov 2007
Member Points: 10

Likeforests:

You wrote:

If you've never done them before, they can be challenging, especially under time pressure. The good news is, they only take a little time to master. Mastering the B+B mate or B+N mate is much, much easier than mastering, say K+R+P vs K+R.

 

Well, do you know of any good resources forteaching these endgames?  I run a HS chess club and havn't anything to use as a resource here.


6th May 2008, 09:24am
#16
by likesforests
United States
Member Since: May 2007
Member Points: 3181

Considering your audience, I think the best explanation of these mates can be found in Pandolfini's Endgame Course. Pandolfini's method is basically to begin with a simple mate-in-two, and then slowly work towards general positions. He explains the B+B mate in 4 diagrams and the B+N mate in 9 diagrams. 

 

As far as a teaching method, after either giving those positions as homework or explaining them in class, one method chess teacher Polly Wright uses (her kids are younger) is to let each student try to mate her and give an award (medal, ribbon--these can be really simple plastic things) to the one who accomplishes it the fastest.

 

I hope that helps.  Glad to hear you're taking the time to teach kids.  :)


7th May 2008, 12:18am
#17
by Sarthe
Oklahoma United States
Member Since: Feb 2008
Member Points: 214

ares and Sunshiny - two knights cannot produce mate in real play - there is a mate position that can be set up on the board with K+N+N vs K, but it cannot legally be arrived at in real play without a stalemate occuring first - when that is all the material that is left on the board it is declared a draw


24th July 2008, 09:27am
#18
by Stavisky
Essen-Antwerp Belgium
Member Since: Nov 2007
Member Points: 417

Sure there is: by the Chess Mentor I found this: mate with King and two bishops angainst King alone, but I remember it isn't simple to do !

Friendly greetings,

Herman

24th July 2008, 02:18pm
#19
by kosmeg
Lamia Greece
Member Since: Apr 2008
Member Points: 183

Two knights can mate only, if the other side has at least 1 pawn.

Two bishops can mate vs lone king quite easily.

Bishop and a Knight vs lone King can mate,but it's quite difficult.

 

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