King and Pawn vs. King

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Troglodyte0

Hello, I'm a chess novice and I am having difficulty in quickly figuring out whether black (lone king) will draw or lose against white (King and pawn). I have a basic understanding of opposition, but I don't know how to quickly assess whether black should draw or lose in a situation. Can someone give me tips or pointers?

I'm not an idiot. So please don't make fun of me; I'm just new and need help in understanding. Thank you.

skyler

Somtimes in it your king can get stalemated like this   

                

 

 

 

 

 

And sometimes you can lose because there pawn premotes



ivandh
If black can get in this position it's a draw. Note that black's king always ends up on the same color square as the white king.
Troglodyte0

I need to figure out in real game situations whether I can win or if I have to stalemate. How do you calculate it quickly?

Meilan1

Basically it depends which king is in front of the pawn. If it's your own you can force a promotion and if it's your opponent's he can force a stalemate. If the pawn is on the edge (a or h file) then it might be possible to force a stalemate even if your king is in front of the pawn.

Scottrf

Learn opposition:

http://tinyurl.com/7l4bfjy

NimzoRoy

In general the side with the pawn needs his/her King in front of the pawn not behind it in order to win

You need to learn "the sq of the pawn" rule when it's just your King vs a pawn (ie the enemy King is too far away to matter) or vice versa

If the pawn can get to the 7th-rank WITHOUT checking the enemy King it queens; if it checks the game is drawn by stalemate. See my blogs for more details and consider picking up a copy of Pandolfini's endgame book Pandolfini's Endgame Course: Basic Endgame Concepts Explained by America's Leading Chess Teacher Fireside Books, 1988. AN 320 pp.

http://www.chess.com/forum/view/endgames/king-and-pawn-vs-king?lc=1#last_comment

http://blog.chess.com/NimzoRoy/endgame-books

netzach

Or to put things simply:

King in front of pawn wins. Always...

[ edit: ''nearly always '' according to the experts..:) ]

Scottrf
netzach wrote:

Or to put things simply:

King in front of pawn wins. Always...

No.

netzach

Yes. hehe.

( If you have pawn & King get in front of your pawn early you will win..:)

Scottrf

No.

You win king on 6th rank pawn on 5th rank, if the pawn is further back your king needs to be two rows in front or you need the opposition. Also, if it’s a rook pawn, the opposition king can trap your king in front of the pawn despite your king being in front, or just move between the queening square and the adjacent one.

King in front, draw:

netzach
pfren wrote:

It does not always win, of course. You have to able to keep it in front for the next few moves, which may not be possible due to mutual zugzuang.

See scottrf's diagram: White to move, loses. Black to move, draws.

I said '' early '' & in Scott's diagram black played incorrectly before position was arrived at.

netzach
pfren wrote:

As far as I can see from the (somewhat muddy) scoresheet, there are no errors from move 52 on: It's a draw.

Before that, Black could win if he didn' push ...g5, but still this does not validate your "rule".

Well, splitting-hairs about specific-positions aside, I stand by what I say. (for advice to beginners such as OP here) It is a good maxim to adopt in my opinion...

Would rather tell them something they can remember & put to good-use than confuse with excess theory.

stephen_33

As for forcing a draw, there's a simple rule of thumb I use - I have to win  control (occupy) one of the two squares in front of the advancing pawn. When my king is forced off both of these squares then I go to opposition on the same file:-


So as a rule, if you can jump on to one of the two squares immediately in front of the pawn then a draw can be forced.  But like most rules there's  an exception to this one:-



So watch out when that pawn is two squares away from the promoting square. Otherwise, always try to get to the square in front of the pawn whenever possible.

Forcing promotion is trickier. It isn't just a case of placing your king in front of your pawn as some people suggest - I think you need to be at least two squares in front to be certain.

 

 

.

Scottrf
netzach wrote:
pfren wrote:

As far as I can see from the (somewhat muddy) scoresheet, there are no errors from move 52 on: It's a draw.

Before that, Black could win if he didn' push ...g5, but still this does not validate your "rule".

Well, splitting-hairs about specific-positions aside, I stand by what I say. (for advice to beginners such as OP here) It is a good maxim to adopt in my opinion...

No it isn't, beginners should completely avoid that 'rule'.

It's a simple enough concept to learn without learning errors which may throw away a win.

netzach

Scott they are either going to win or at very worst draw. Why is that bad advice ?

Scottrf

Because you can turn a won position into a drawn one by thinking it's enough to have the king one square in front of the pawn, when often it's not.

netzach

Often ?  It's always the best route to take to '' try '' to win. What are you going to play otherwise to win from such a position then ??

(In your diagrammed game)

You could have mentioned that you & the Parham-crew had already gone over this & posted link to save time ? Smile

http://www.chess.com/forum/view/game-showcase/beginners-learn-opposition?page=1

Scottrf

Look at this position.

You've told a beginner 'king in front of pawn is always winning'. They play Kc5 and throw away the win.

If you instead tell them that they need the king in front of the pawn with opposition with the object of getting their king to b6, c6 or d6 (and afterwards pawn on 5th, King on 6th) they can see the idea of Kd5.

Rantu_Gupta

good

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