# Tag Info

59

In this game Kasparov is showing a perfect demonstration of the triangulation technique in order to Zugzwang the white king. To be in a Zugzwang means, any move loses or more generally, worsens your position, and one cannot simply pass the turn and maintain the position. In the diagrammed position, the key idea to spot is that white would be in Zugzwang ...

22

This position is a draw with White to move. However, the same position would lead you to win if it was black to move (Zugzwang). The basic theory for you to promote the pawn when the opponent king is having the opposition is you need to have your king in front of your pawn 2 ranks ahead of the pawn, (i.e. if pawn's on e3 King needs to be on e5) (opposition ...

21

There is a very easy way to detect whether King and Pawn endgames are drawn or not. This method I use is a very easy to understand one from Karsten Mueller and Frank Lamprecht's excellent book Secrets of Pawn Endings It concerns key squares and opposition The rule states that if pawn has not reached or crossed the central line (5th rank for White and 4th ...

18

Generally speaking, the side with the most pawns will win. The tempo provided by the extra pawn is usually enough to gain opposition and access to the key squares. Doubled pawns don't matter for this, unless they're blocked. The extra pawn can also limit the movement of the opponent's king, resulting in the possibility of a triangulation maneuver. Another ...

15

While there are general rules, these rules have many exceptions and nuances. In the following position with White to move, both sides have a passed pawn, but the fact that Black's passed pawn is so much better means White is dead lost: [FEN "6k1/8/6p1/2p5/1pPpP3/pP6/2P3P1/2K5 w - - 0 1"] But it's precarious. Remove Black's A-pawn from the starting ...

14

In the general case K+N vs K+P is of course a draw - or a win for the pawn if it can promote unhindered. There is however a famous construction were the knight can force a mate against a king stuck in front of its own well-advanced rook pawn: [fen "8/3N4/8/8/8/p7/k7/2K5 w - - 0 1"] 1.Nc5 Ka1 2.Kc2 Ka2 3.Nd3 Ka1 4.Nc1 a2 5.Nb3# There are many ...

14

Just for the record, the longest win in this endgame is 7 moves: [FEN "8/8/8/8/p7/8/N7/k1K5 w - - 0 1"] 1. Nb4 a3 2. Nc2+ Ka2 3. Nd4 Ka1 4. Kc2 Ka2 5. Ne2 Ka1 6. Nc1 a2 7. Nb3# The idea in this position (and other similar positions) is to stalemate the king in the corner; that forces a pawn move and when the pawn reaches a2, you'll need to have ...

13

This is a very common kind of endgame, where you have a pawn majority on one side and fight against a single pawn in the center. Winning this is not difficult, but let's first look at your game... You fixed the position of the queenside pawns by playing b6 (to which white cleverly replied b5 ran with your king towards the queenside Basically you should ...

12

If you want to evaluate this ending with general rules, the rule of key squares is a good way to deal with it. However, this rule doesn't say "whoever reaches a key square first will get the result he is aiming for", it says "if the offensive king (here, Black) reaches one of the key squares, he will win." Here after 1.Kc3 Ke4 2.Kd2 Kd4 you cannot prevent ...

11

I setup the position using this FEN String 4k3/pppppppp/8/8/8/8/PPPPPPPP/4K3 w - - 0 1 Using a grid engine cluster with 24 nodes, each node having 16 cores at 3.2 Ghz with 60gb of ram The engine used was Houdini 4 pro (allowing multiple cores) After analyzing for several days ( 4 days 12 hours 2 minutes and 15 seconds to be precise) the engine scored the ...

11

The two previous answers both suggested that this position is a draw, but I believe it's a win for White. Stockfish 5 evaluates the position at more than +10 if left to run for long enough (e.g., to depth 40), which sounds pretty decisive, but of course Stockfish isn't infallible. I generated a FinalGen tablebase for the position, but unfortunately it wasn'...

9

Some of the corresponding squares are quite easy to work out, especially if you write things down (not allowed in a real game). First of all, it is clear that a5 corresponds to c6. Black can move from c6 to g4 in 4 moves. The only square that stops black's invasion and is 4 moves away from a5 is e2, so e2 corresponds to g4. The squares on the paths in ...

9

If the king is on the sixth and the pawn is on the fifth (and it's not a rook pawn), then it's a win for the side with the pawn, no matter who has the move: [FEN "4k3/8/4K3/4P3/8/8/8/8 w - - 0 1"] 1. Kd6 Kd8 2. e6 Ke8 3. e7 Kf7 4. Kd7 Kf6 5. e8=Q * With Black to move: [FEN "4k3/8/4K3/4P3/8/8/8/8 b - - 0 1"] 1... Kd8 2. Kf7 Kd7 3. e6+ Kd8 4. e7+ ...

8

A game between McDonnell and De La Bourdonnais is very famous. Although no promotion was executed on the board, it is definitely the theme of the game. [FEN ""] [Event "London m4 ;HCL 18"] [Site "16"] [Date "1834.??.??"] [EventDate "?"] [Round "62"] [Result "0-1"] [White "Alexander McDonnell"] [Black "...

8

EDIT: Now that I look closely, I have solved a different variant than what was asked. Probably this is interesting anyway :) The variant's rules are described here: http://www.chesscorner.com/tutorial/basic/pawngame/pawngame.htm I have written a piece of software to solve this. Contrary to my and other people's expectations, and barring bugs, it shows that ...

8

This is a stunning endgame. It is impressive how Kasparov perfectly used reserve tempi to reach the winning position in the diagram where triangulation is all that remains after Seirawan's 40. e4?? which was the last move of time-control. After this Seirawan is lost. Seirawan annotates this game in his book full of stories "Chess Duels : My Games with the ...

7

There is no way to promote the pawn here. The position is drawn if it is white to move. With black to move it would be won. You may want to read up on key squares and the opposition to get a better understanding of such situations in general.

7

Any chess-playing computer program that allows you to set up positions can be used. And yes, Fritz is especially suited for this. You have several options: Set up the position yourself (using board/position set up). Choose any position that you want to get better at. Save that position and play against the computer. 1a. I used to do this for simple pawn ...

7

Komodo 9.3 evaluates the position after 1.Kd5 (after searching to 31 ply) as +2.32 for White. Playing out a few lines, White usually ended up with Q+2P vs Q+P. It's not necessarily winning (Q+P endings have lots of resources for the defender due to all the checks) but I am comfortable asserting that the position is more pleasant for White. For what it's ...

7

To solve this you need to ask yourself 2 questions: 1) How could the position change so that Black can draw? White must try and avoid this. 2) How could the position change so that Black can no longer protect his pawn(s)? 1) Suppose White just pushes g5. Then Black can never be forced away from the defence of f7. Either the white king will move between e7 ...

7

As far as I can tell, in your proposed variant a player could always force a draw by placing the king in a reasonably centralized position, regardless of what the other side chooses. Even if he allows the opponent a seemingly superior king position, it still winds up as a draw with correct play. Let's say Black chooses the king on the D file and the pawn on ...

7

I think you should avoid taking on e3, even though it is objectively winning, this gives your opponent a passed pawn on e-file and exposes your f3-pawn (which is a big headache for white), this complicates the game. If you don't take on e3 yourself, you opponent can force you with a5, is there a way to stop that? Yes, there is: play 1...a5 yourself, if 2....

7

As you rightly point out Kc4 is forced for white and then whichever king has to move first loses. It is worth quickly checking if white can abandon the d5 pawn and go for the a5 with the intention of queening the a4 pawn. You do this by counting to see who queens first. For white it goes Kb5, Kxa5, Kb4 (to threaten the c pawn), a5, a6, a7, a8=Q - 7 moves. ...

6

The reason why you lose the winning edge is, as it almost always is, because of tempi: [fen "8/4Kp2/4p3/4k1p1/8/8/5PP1/8 b - - 0 1"] 1...f5? 2.Kf7, g4 3.g3!, Kd6 4. Kg6! (4.Kf6?, Kd5 5. Kg6, Ke4! 6.Kf6, e5 7.Kg5, Kf3 {and black picks up the f2 pawn.}) 4...Kd5 5. Kf6 {and black cannot advance without giving up a vital pawn.} Let's look at what happens ...

6

The point of all this is to be able to evaluate this basic position only by applying rules, not having to calculate the concrete variations. Well, the basic rule of (single) pawn endings is that if the side with the pawn manages to get their king on one of the key squares (and the pawn can't be taken on the next move), it's a win. I'm able to get first ...

6

There is no general rule for multi-pawn endgames as they are much too complex. However I believe that most of the pawn only endgames that appear in regular games are readily assessed correctly by grandmasters (or even just masters). Sure there are pawn endgame studies that might be tricky, but on average assessing a pawn endgame is much easier than an ...

6

I figured winning a pawn up in a pawn endgame is a useful skill to know It is a useful skill to know and an even more important skill to know is when a pawn-up endgame is a win and when it is a draw and when it could be either depending on who is to move first. This is a vital skill because it stops you from swapping off into a drawn king and pawn endgame ...

6

King and pawn endgames are much easier than ones where each side also has a rook. The key principles are fairly simple. You want to try and queen a pawn. With pawns on both sides of the board and an imbalance as here there are two key points: Getting your king to the middle of the board is very important. The only pawns you are likely to queen are ones on ...

6

I think the term 'intersect' is not really intuitive here. From c2, the white king can go to d2 and c3 in one move. That means the black king must find a square from which it can reach f3 and e3 in one move. That square is f4; this would be true for e2 and f2 as well, but then the black king is outside the pawn's square and it can run to promotion. It doesn'...

5

There were a lot of inaccuracies by both players, I don't think you were ever losing, but you certainly threw away the win occasionally. I think three concepts might be helpful to you: A protected passed pawn is very strong in a pawn endgame because it forces the enemy king to keep an eye on it at all times. Therefore allowing 46…e4 was a big mistake that ...

Only top voted, non community-wiki answers of a minimum length are eligible