K+2N vs. K+P

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ChessisGood

According to most sources, this endgame is a win for the stronger side. Of course, if the pawn is gone, a draw is forced. Can someone please explain how to win and show some variations as well?

Crazychessplaya

The win takes at least 39 moves according to the Nalimov tablebases. A reasonable explanation would be difficult to post here.

AndyClifton

lol

Beachdude67

How is this a win? 2 knights can't force a mate on a lone king, and the pawn has no hope of being promoted.

Beachdude67

Aha, April Fools Day and I fell for it LOL

Crazychessplaya
Beachdude67 wrote:

How is this a win? 2 knights can't force a mate on a lone king, and the pawn has no hope of being promoted.

2 knights can't force a mate against a lone king, BUT this can be done against a king and a pawn. Just a fun thing worth remembering sometimes.

Crazychessplaya

No kidding here, beachdude...

AndyClifton

Other fun projects we can help the OP with:

 

squaring the circle

invading Russia

figuring out Fermat's last theorem

finishing Schubert's 8th symphony for him

concocting a unified field theory

BlueKnightShade
AndyClifton wrote:
...

finishing Schubert's 8th symphony for him

...

Actually that has been done. Several people have made a completion, so there are many versions: http://en.wikipedia.org/wiki/Symphony_No._8_%28Schubert%29

ChessisGood

Yes, I know that it is possible (Not April Fools Day!). However, I would like to know the general strategy behind the mating attack, not the specific moves involved.

BlueKnightShade

Well, you need to chase the king in a way so it is forced into a corner and then trap it there with the king and a knight. Then, because black has a pawn, he can not be stalemated, so white has time to move his other knight closer, while black makes pawn moves, until white can make a check mate with the other knight.

AndyClifton
BlueKnightShade wrote:
AndyClifton wrote:
...

finishing Schubert's 8th symphony for him

...

Actually that has been done. 

So has invading Russia. Wink  Don't get me sidetracked.

ChessisGood

@AndyClifton:

Have you ever made a USEFUL comment in your life?

AndyClifton

I certainly hope not!

gambit-man

@chessisgood - why not play the mating line through and see if you can figure out how it's done? you'd be surprised how much you'd learn from it.

BTW, i didn't realise white could force a mate with NNvP, thinking they could only win by helpmate. Playing this through i've realised the subtleties of the position

Natalia_Pogonina

You might want to check out this article - The Troitzky line. Very instructive, actually.

ChessisGood

Thanks so much Natalia, that was what I was looking for.

gambit-man

Nice one Natalia, it all seems so clear now :-)

Rick56

Very cool. Thanks Natalia. I'll admit, I didn't know that it was impossible to checkmate a king with just 2 knights. I always thought I just wasn't good enough yet.

SimonWebbsTiger

Karsten Mueller wrote a couple of articles on the 2N v. P endgame. It is a very rare endgame though.

http://www.chesscafe.com/text/mueller35.pdf