Endgame: Knight vs Pawn

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MARattigan
SorryImAnon wrote:
...

Solved.  Took me about 35 seconds

Well done. Quite impressive if you haven't studied the endgame before.

MARattigan
SorryImAnon wrote:

1... Nb5 2. h4 Nc3 3. Ke5 Na4 4. h5 Nc5 5. Kf6 Ne4+ 6. Kg6 Nc5 7. Kf7 Ne4 8. Kg6 Nc5 9. Kf6 Ne4+ 10. Kf5 Ng3+ 11. Kf4 Nxh5+  is your answer.  Got any harder ones?  

Well it's not a very hard endgame, so you're not going to get anything much harder I'm afraid.

MARattigan
SorryImAnon wrote:
MARattigan wrote:
SorryImAnon wrote:

1... Nb5 2. h4 Nc3 3. Ke5 Na4 4. h5 Nc5 5. Kf6 Ne4+ 6. Kg6 Nc5 7. Kf7 Ne4 8. Kg6 Nc5 9. Kf6 Ne4+ 10. Kf5 Ng3+ 11. Kf4 Nxh5+  is your answer.  Got any harder ones?  

Well it's not a very hard endgame, so you're not going to get anything much harder I'm afraid.

I meant studies

Plenty of harder studies, but off topic. If you throw in some extra pieces I like this one.

White to play and win

Should take you a little longer.

Or if that's too easy try this one:

White to play and win

 

MARattigan
SorryImAnon wrote:

Step 1 block b6 with Nc7 Nb5

 

Step 2 Nc1 to d3

 

King and knights can control bishop,  White wins it and can then do normal mate

Well done again, but how do you force the capture of the bishop?

Ziryab
MARattigan wrote:
SorryImAnon wrote:

Never had to do this in a game before yet but the first move was obvious and I was able to solve the rest in the time it took me to input the next moves.  Quick,  easy and very important.

You might find this Grigoriev study more challenging. I give only a single line but all Black's moves are forced against the given defense (so if it says "incorrect" it is).

Black to play and draw

 

Good one. Move three was tough. 

Good thread, too.

MARattigan

@Ziryab

Except when I looked at it I couldn't do it myself.

That is until I realised the board was upside down. I obviously hadn't got the hang of the set up pane when I posted it. (I've revised it to add coördinates, but still failing to get the board the right way up. Seems to come out upside down whether you tick "flip board" or not.)

Ziryab
MARattigan wrote:

@Ziryab

Except when I looked at it I couldn't do it myself.

That is until I realised the board was upside down. I obviously hadn't got the hang of the set up pane when I posted it. (I've revised it to add coördinates, but still failing to get the board the right way up. Seems to come out upside down whether you tick "flip board" or not.)

At the beginning, I wasn't certain which way the pawn was moving. Then, I made a few errors in solving. The third move was the most difficult.

Grigoriev's studies are usually quite instructive.

MARattigan

Yes - I think the third move was the main point of the study.

(Hate this editor with a passion.)

EndgameEnthusiast2357

Knowing how to draw these with the knight is important, but it's also important to know that you can win sometimes with just the knight if the pawn is on the edge file. Above is a simple 10 move sequence.

asto0237

It's knight and king vs pawn and king

Ziryab
asto0237 wrote:

It's knight and king vs pawn and king

Kings are assumed. They never leave the board.

MARattigan

For @EndgameStudier if he still wants it. The first of the positions posted in #23 as a puzzle.

Solution stops if winning KNNvKP or KNNvKPP is reached, as I believe did Troitzky's who composed the puzzle. He published a comprehensive analysis of White wins in the former case in his supplement to Collection of Chess Studies 1937

(If it says "incorrect" on move 9, among others, it's probably lying.) 

 

The second is the record 549 move 7 man mate taken from the tablebases (accurate version no longer generally available since the Lomonosov tablebases were sabotaged). I think I'll decline to post that one as a puzzle. 

EndgameEnthusiast2357

Thanks man! That's a cool puzzle, such a simple position yet there is that mating combination.

MARattigan
EndgameStudier wrote:

Knowing how to draw these with the knight is important, but it's also important to know that you can win sometimes with just the knight if the pawn is on the edge file. Above is a simple 10 move sequence.

Similar, but a little simpler at 9 moves.

J.Mendheim, 1832

 

EndgameEnthusiast2357

That one was actually a little trickier, there may have been other solutions, not sure.

MARattigan
EndgameStudier wrote:

That one was actually a little trickier, there may have been other solutions, not sure.

First move is unique, but "dual" is an understatement from move 7 (five different finishes).

I think up to move 7, against most obstinate black defence (main line and first variation shown) White's choices are fixed. 

Arisktotle

In 1832 that was the study of an endgame but not yet an endgame study by the rules and criteria developed in subsequent decades.

MARattigan

There is one interesting fact about Troitzky's position posted in #32 that I've only just realised from looking it up on the Syzygy site. It's rather surprising that White has a win, but, given that, not so surprising that that he has only one move that wins. What is surprising is that he also has only one move (Na5) that loses. In particular White has a draw after this sequence.

Draw

 

EndgameEnthusiast2357

Also a quick pointer on how you can win with the pawn. Remember to advance in this position and not settle for a draw by capturing the knight (knight cannot mate a king and queen so don't need to worry about losing on time).

hermanchess123
here is a little twist to the "knigth in the corner vs one pawn on the a or h file is always a loss for the player with the knigth" this is not true! look at this position. If white plays Kg3 as done here the black king cannot take or its STALEMATE! and then the knigth will be able to control the h1 promotion square and it will be a theoretical and practical draw.