(UTC)
  ChessPub Forum › Other › Endgames › Rook Endings › g- and h- pawns versus h-pawn
(Moderator: trw)
‹ Previous Topic | Next Topic ›
Page Index Toggle Pages: 1
Topic Tools
Hot Topic (More than 10 Replies) g- and h- pawns versus h-pawn (Read 8405 times)
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
Re: g- and h- pawns versus h-pawn
Reply #10 - 11/30/12 at 18:08:10
Post Tools
Manea-Sofronie.pgn
  
Manea-Sofronie.pgn ( 1 KB | Downloads )
Back to top
 
IP Logged
 
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
Re: g- and h- pawns versus h-pawn
Reply #9 - 11/30/12 at 18:06:29
Post Tools
D. 6

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Jansa – Marjanovic (analysis) 
Jansa,V. in Informator 36/10 . Parma in ECE
Bagneux, 1983

1...Rc5

1...Rc2+ 2.Kf3 Rc3+ 3.Kf4 Rc4+ 4.Kf5 Rc5+ 5.Ke6!+- (Jansa).

2.Rg6! Ke7 3.Kf3

Jansa analysis here only the weak 3…Kf7 which loses after 64.Rg5 Rxg5 65.hxg5 Kg7 66.Ke4 Kg6 67.Kf4+-. 

3...Rc8 

This move of Parma offers more stubborn defence.  

D. 6.1


* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

4.Kf4 Kf7 5.Kg5 Rh8+-.
 
See D. 7.1.

D. 7


* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Manea-Sofronie 2000

1…Kf7! 2. Rg5

I. 2…Rc8? 

Black could have drawn with 2…Rc6!

3. Kf5 Rh8 4. Rg6! Ra8 5. Kg5 Rh8

We have reached the position in D. 6.1 after 5…Rh8. It could have arisen also in D. 2.7, if Black instead of 10…Rh7 would have played 10…Rh8 11.Kg5 Kf7.

D. 7.1


* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

6.Rf6+ Ke7 

6…Kg7 does not help. 7.Rf5 Rh7 8.Ra5+-. 

D. 7.2


* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Manea played 7.Rh6 (1) and won. White can win also by 7.Rf3 (2). 

1) 7.Rh6 Rg8+ 8.Rg6 Rh8 9.Rg7+ Ke6 10.Kg6+-.

We have transposed to D. 4.

2) 7.Rf3 Ke6 8. Kg6 Ke7 

8... Ke5 9. Rf5+ Ke6 10. Rg5+-.  

9. Kg7 Ra8 10. Rf5 Ra3 11. Rg5+-.

White has also a tactical possibility here: 

11. g4 hxg4 12. h5 Ke6 13. Rb5 Ra7+ 14. Kg6 Ra8 15. h6 Rg8+ 16.Kh7 Ra8 17. Kg7 Ra7+ 18. Kg6+-.

II. 2... Rc6!

D. 7.3

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

3.Kf4 Rh6 

3...Rf6+ 4.Rf5 Kg6=. 

4.Ra5 Rh8

4...Rf6+=.

5.Kf5 Rb8 

5...Rc8=.

6.Ra7+ Kf8!

6...Kg8? 7.Kg6!+-. 

7.Kg6 Rb3!=.
  
Jansa___Marjanovic__analysis__.pgn ( 0 KB | Downloads )
Back to top
 
IP Logged
 
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
Re: g- and h- pawns versus h-pawn
Reply #8 - 10/27/12 at 18:36:32
Post Tools
D. 5

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Tipary-Bronstein  1949
(rev. col. and flanks)

Kopayev’s comments of this game included a number of mistakes which were not corrected by Averbakh in the 2. edition of Comprehensive Chess Endings. 

1.Kg5?!

White could have won easily by1.g4 hxg4 2.Kxg4 Ke4 3.h5 Rh8 4.Ra5 Rg8+ 5.Kh4 Kf4 6.h6+- (Kopayev).  

1...Rh8

D. 5.1

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

I. 2.Kf6?

Kopayev made no comment on this move which throws away the win. White could have won with 2.Kg6 (II.) or by liquidating to a rook and pawn versus rook endgame after 2.Kf4 (III.) or 2.Re5 (IV). 

1) 2...Rf8+?

Here and at the next move Kopayev again fails to mention the result-changing mistakes of both sides.  

D. 5.2

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

3.Ke6?

White had here the chance to correct his mistake and play 3.Kg5.  

3...Rh8 4.Kf7 

White could try 4.Ke5 but Black draws by 4…Ke3! 5.Kf6 Ke4=. Not 5...Rf8+? 6.Kg5 Rh8 7.Rf4 Rh7 8.Rf6+-. 

4...Ke4 5.Rg5 Ra8?

Again Kopayev does not comment on this move which throws away the win.

The only move to draw was 5...Rh6! with transposition into the D. 4.4. 5...Kf3? transposes into the D. 4.3.  

D. 5.3

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

6.Kg6 Rh8 7.Rxh5 Rg8+ 8.Kf7

8.Kh7 is simpler. 

8...Rxg3 9.Ra5 Rb3 

D. 5.4

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

10.Kf6?

After this mistake the position is drawn. Kopayev proved the win by 10.h5 Rb7+ 11.Kg6 Rb6+ (11...Kf4 12.h6 Rb6+ 13.Kh5 Rb7 14.Ra8 Kf5 15.Rf8+ Ke6 16.Kg6 Rb1 17.Rf6+ (17.h7? Rg1+ 18.Kh6 Rh1+ 19.Kg7 Rg1+ 20.Kh8 Rh1) 17...Ke7 18.Kg7) 12.Kg5. 

10...Kf4! 11.Rg5

11.h5 Rb6+ 12.Kg7 Rb7+ 13.Kf6 Rb6+=(Kopayev). 

11...Rb6+ 12.Kg7 Rb7+ 13.Kh6 Rb8 14.Kh7 Draw.   

Back to D. 5.1 after 2.Kf6?

2) 2...Ke4!

This is the the first of a long succession of only moves.  

D. 5.5

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

3.Rf4+ 

a) 3.Ra5 Kf3= (3...Rf8+ 4.Kg7 Rb8 5.Rxh5 5...Rb7+=). 

b) 3.Rg5 Rh6+! 4.Kg7= See above D. 4.3. after 4.Kg7. 

3...Kd5!

3...Ke3? 4.Kg6 Rg8+ 5.Kxh5 Rxg3 6.Rg4 Rf3 7.Kg5 Rf8 8.h5+-. 

4.Ra4 Rf8+! 5.Kg7 Rb8!

Black should keep the maximum checking distance. 5…Rc8? loses –6.Ra5+ Ke4 7.Rxh5 Rc7+ 8.Kf6 Rc6+ 9.Ke7 Rc7+ 10.Kd6 Rg7 11.Re5+! Kd4 12.Rg5+-. 

6.Ra5+

6.Kh6 Rh8+ (6...Rg8? 7.Ra5+ Ke4 8.Rg5+-) 7.Kg5 Rg8+! (7...Ke6 8.Ra3+-) 8.Kxh5 Rxg3.  
6.Ra3 Rb6!=. 

6...Ke4! 7.Rxh5 Rb7+! 8.Kg6 Rb6+! 9.Kg5 Kf3! 10.g4 Rb8=.  

Back to D. 5.1

II. 2.Kg6

D. 5.6

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

2…Rg8+

2...Ke4 3.Rxh5 Rg8+ 4.Kh7 Rxg3 5.Ra5 Kf4 6.h5 Rb3 7.h6+-. 

3.Kxh5 Rxg3 4.Rg5 Re3 5.Kg6 Re6+ 6.Kg7 Re7+ 7.Kf6 Ra7 8.Ke5+-. 

Back to D. 5.1

III. 2.Kf4

Backtracking in order to prepare g3-g4. Immediate 1.g4 fails to 2…Ke4! 3.Ra5 (3.gxh5 Rxh5+=) 3...hxg4! 4.Kxg4 Rg8+! 5.Rg5 Ra8 6.h5 Ra1! 7.h6 Rh1! 8.Rh5 Rg1+!=. 

2…Rh6 3.g4+- with transposition  to the winning line of Kopayev 1.g4. 

Back to D. 5.1 

IV. 2.Re5 Kd4

2...Rg8+ 3.Kxh5 Rxg3 4.Kh6+-.

3.Kf4 Rh7 4.Ra5 Rf7+ 5.Rf5 Rh7 6.g4 hxg4 7.Kxg4 Ke4 8.h5!+-.  See the line 1.g4.
  
Tipary-Bronstein.pgn ( 2 KB | Downloads )
Back to top
 
IP Logged
 
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
Re: g- and h- pawns versus h-pawn
Reply #7 - 10/14/12 at 11:39:56
Post Tools
D. 4

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

This position is arisen in Manea-Sofronie (2000) after 66…Ke6. It could have arisen also in D. 2.7, if Black instead of 10…Rh7 would have played 10…Rh8 11.Kg5 Ke7 12.Rg7+ Ke6. The position has been also analysed by Parma in ECE n. 705 (analysis of Jansa-Marjanovich, D. 6).   

1.Kg6!

This is the only move to win. 
1.Rg6+? Ke5! 2.Ra6 Rg8+! 3.Rg6 Rh8! 4.Rg7 Ke4!=.  


1…Ke5

D. 4.1

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

I. 2.Kf7?

In Rozenfeld-Ney we saw that the direct plan with placing the rook on g5 and the king on g7 does not work. The situation is the same also here. The move 2.Kf7? was suggested by Parma in ECE. 

D. 4.2

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*
     
2...Ke4

Or 2...Rh6 (see the note after 3…Kf3?).  

D. 4.3

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

3.Rg5 Kf3?

This move of Parma loses. It was not too late to play 3...Rh6!=.  

D. 4.4

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

4.Kg7 Ra6 5.Rg6 Ra8! 6.Kh6 Rh8+ 7.Kg5 Kf3=. 

3...Ra8? loses (see Tipary-Bronstein, D. 5).  

Back to the D. 4.3 after 3.Rg5 Kf3? 

4.Kg6 Kf2

4...Ke4 5.Kg7. 

5.Rxh5 Rg8+ 6.Kf7 Rxg3 7.Rf5+ Ke3 8.h5+-. 

Back to D. 4.1

II. 2.Re7+!

This is the only winning move played in Manea-Sofronie 2000. After 2.Ra7 Rg8+ White can win only by backtracking with 3.Rg7.  

D. 4.5

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*
 

2…Kd4

2...Kd6 also loses. 3.Ra7 Rg8+ 4.Rg7 Rh8 5.Kf7 Ke5 6.Rg5+ Ke4 7.Kg6 Kf3 8.Rxh5 Rg8+ 9.Kf6 Rxg3 10.Rg5+- or 10.Re5+-. 

3.Rh7 Rg8+ 4.Kf7 Rxg3 5.Rxh5 Ra3 6.Rb5 Ra7+ 7.Kg6 Ra6+ 8.Kg5 Ra1 9.h5 Rg1+ 10.Kf6 Rf1+ 11.Kg6 Rg1+ 12.Rg5 Ra1 13.h6 Ra6+ 14.Kh5 Ra8 15.Kg6 Ra6+ 16.Kg7 Ra7+ 17.Kh8 Ke4 18.h7 Kf4 19. Rg7 Ra1 20.Rf7+ Ke5 21.Kg8 1-0.

Manea’s play is impressively accurate.
  
ECE_n_705_001.pgn ( 1 KB | Downloads )
Back to top
 
IP Logged
 
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
Re: g- and h- pawns versus h-pawn
Reply #6 - 10/08/12 at 12:14:53
Post Tools
D. 3

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Polugaevsky - Antoshin
Leningrad master, Leningrad, 1954

1.g3!

This position is winning for White whoever moves first. See D. 4 with White to move.  

In Rozenfeld-Nei we saw 1.Kg6 (D. 2.2). 

1.g3 is the only move to win. Moves like 1.Kg6 or 1.Rg6+ does not let the win slip but in order to win White has to backtrack. 

I. 1…Kd6

D. 3.1

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

2.Kf6

White king shoulders the Black king aside and makes the square g5 available for his rook. 

2…Rf8+ 3.Kg6 Rh8 4.Kf7 Ke5 5.Rg5+! Ke4 6.Kg6 Kf3 7.Rxh5 Rg8+

D. 3.2

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

1) 8.Kh7?

We saw the same mistake in the analysis of Levenfish/Smyslov above, D. 2.4, main line, after 13. g3 Kf3 14. Rxh5 Rg8+. 

8…Rxg3 9.Rg5 Rg4 10.Rf5+ Ke4 11.Rh5 Kf4 12.Kh8 Kg3 Draw agreed. 

2) 8.Kf6 Rg3 9.Rg5 Rh3 10.h5+-.

3) 8. Kf7 Rxg3 9. Rg5! Rg4

9... Rh3 10. h5 Kf4 11.Kg6+-.

10.Rf5+ Ke4 

10... Kg3 11. h5+-.

11. Ra5+-. 

II. 1…Ke5   

D. 3.3

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

2. Re7+ Kd6

1) 3. Kf6 Ra8

a) 4. Rg7 Rf8+ 5. Kg6 Rh8 6. Kf7 followed by 7. Rg5 and 8.Kg7+- (Levenfish/Smyslov).  

b) 4. Re6+

This move is the simplest way to win. 

4…Kd7 5. Re5 Rf8+ 6. Kg7 Rf3 7. Rg5+-. 

2) White wins also by 3.Re3 Kd5 8. Kg6 Kd4 9. Ra3

9.Re7 Rg8+ 10. Rg7 Rh8 11. Rh7 Rg8+ 12.Kf7 Rxg3 13. Rxh5+-.

9...Ke4 10.Rb3 Kd4 11.Rb5 Rg8+ 12.Kxh5 Rxg3 13.Kh6+-.  

III. 1... Kd5

D. 3.4

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Now, if Black were to play, he would draw by Ke4. 

2.Kf5 Rf8+ 3. Kg6 Rh8 4.Rh7 Rg8+ 5.Kf6 Rxg3 6.Rxh5+ Ke4 7.Re5+ Kf4 8.h5 Rh3 9.Rf5+ Kg4 10.Kg6+-.   
  
Polugaevsky-Antoshin.pgn ( 1 KB | Downloads )
Back to top
 
IP Logged
 
mbourzut
YaBB Newbies
*
Offline


I Love ChessPublishing!

Posts: 13
Joined: 08/20/12
Re: g- and h- pawns versus h-pawn
Reply #5 - 08/23/12 at 03:25:59
Post Tools
Well done, your analysis is exactly confirmed by the 7-man database.  It is interesting that several strong chess engines want to play 51.Ra6? even after a lot of "thought".
  
Back to top
 
IP Logged
 
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
Re: g- and h- pawns versus h-pawn
Reply #4 - 08/22/12 at 14:37:33
Post Tools
Thank you Mbourzut for your posting and appreciation! 

Janowski-Eisenberg (1902) is a very interesting and instructive position which is not covered in any endgame book I know. It is a good illustration for the importance of cutting off the defending king. 
White wins here with 1.Re5! because he is able to maintain the Black king cut off from e-file with the help of tactical threats. Without the important zwischenzug 54.Re5+! the win were not possibile. This also explains why 1.Re4 is not winning – after 51.Re4? Rf8! 52.Rh4 Rf7 53.Ke4 Ke7 54.Ke5 Rg7 55.Ra4 Rg5+ 56.Kf4 Rh5! 57.h4 Kf7 Black manages to bring his king to the kingside. The cut off from f-file is not sufficient – see the line 50...Kd5 -  53.Kf3?
  
Janowski-Eisenberg.pgn ( 1 KB | Downloads )
Back to top
 
IP Logged
 
mbourzut
YaBB Newbies
*
Offline


I Love ChessPublishing!

Posts: 13
Joined: 08/20/12
Re: g- and h- pawns versus h-pawn
Reply #3 - 08/22/12 at 01:17:39
Post Tools
Thank you for posting your very lucid analysis of rook endgames!

The position below arose in the game Janowski-Eisenberg, 1902.  
White to play and win:

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*
  
Back to top
 
IP Logged
 
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
Re: g- and h- pawns versus h-pawn
Reply #2 - 07/14/12 at 17:15:03
Post Tools
Our following examples deal with blocked rook pawns on h4 and h5. 

D. 2

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Rozenfeld-Nei 1955 (rev. col.) 

This ending was extensively analysed by Levenfish/Smyslov (Theory of Rook Endings, Rissian edition, n. 233) but their analysis included a a considerable number of mistakes. 

1...Kd6 2.Rg3

2.g4 Ra4+ 3.Kg5 Rxg4+ 4.Kxh5 Rg1 5.Kh6 Rg2 6.h5 Kd7 7.Kh7 Rg1= (Levenfish/Smyslov).  
2.Re4 Ra8 3.g4 Rf8+ 4.Kg5 hxg4 5.Kxg4 Kd7 6.h5 Re8 = (Levenfish/Smyslov). 

2...Ra8

D. 2.1

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Ney played here 3.Rg6+ (I). Levenfish/Smyslov note that also 3.Rg7 (II) wins but it is a decisive mistake. The simplest way to win is 3.Rg5 (III). 

I. 3. Rg6+ Ke7 4. Kg5

Also here was not too late to play 4. Rg5. 

4... Rh8

D. 2.2

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

A) 5. Rg7+ Ke6 6. Kg6?!

White proceeds consequently with his wrong plan: to bring his rook to g5 and his king to g7 and thus win the h-pawn. This plan does not work also with the White pawn on g3 (see D. 4.1). As we will see in the analysis of the game Polugaevsky-Antoshin, D. 3, the right move here is 6. g3.   

6... Ke5

D. 2.3

X
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

7. Kf7   

Levenfish/Smyslov give an exclamation mark to this move which actually throws away the win. 7. Kg5 Ke6 8. g3 (Transposition into the game Polugaevsky-Antoshin, D. 3) was required. 

1) 7... Kf4

D. 2.4

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

8. Rg5 Ra8

Levenfish/Smyslov again give exclamation mark to a result-changing mistake. Black could have drawn by 8... Rh6 9. Kg7 Ra6 10. Rxh5 Ra7+. 

9. Kg6

Not, of course, 9. Rxh5?  Ra7+ 10. Rxh5 Ra7+.  

9... Rh8 10. Kg7

White maintains the win with this move, but it is simpler to play 10. Rxh5 Rg8+ 11. Kf6 Rxg2 12. Rf5+ Ke4 13. h5 (Levenfish/Smyslov). 
 
10... Ra8 11. Kh6 Rh8+ 12. Kg6 Ke4 13. Kg7?!

White is wrongly playing for zugzwang instead of simply taking the pawn. Both 13. Rxh5 and 13. g3 Kf3 14. Rxh5 would have won (Levenfish/Smyslov). In the 2. line (13.g3) Levenfish/Smyslov recommended after 14…Rg8+ 15. Kh7? Rxg3 16. Rg5 and considered this position as a win. But Black actually draws by 16…Rg4! Instead of 15.Kh7? which have been played also in the game Polugayevsky-Antoshin (D. 3), White can win by 15.Kf6 Rg3 16.Rg5 Rh3 17.h5. 

13... Ra8 14. Rxh5?

The final mistake. As Levenfish/Smyslov point out it was still not too late for Black to play his king back to g6 and choose the correct winning line. 

14.Kg6 Ra7+ 15. Kg6 Ra6+ 16. Kg5 Ra2! 17. Kf6

17. g4 Kf3 or 17. g3 Kf3 or 17. Kh6 Ra6+ lead all to draw (Levenfish/Smyslov).

17... Ra6+ 18. Kg5 Ra2 19.Rh8 Rxg2+ Draw agreed. 

2) 7... Rh6

D. 2.5

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

8. Rg6

8. Rg5+ Kf4 9. Kg7 is a draw, as we have already seen in D. 2.4 after 8.Rg5 Rh6 9. Kg7. Or 8. Rg3 Ra6 9. Rg5+ Kf4 10. Rxh5 Kg3= (10... Ra7+ 11. Ke6 Ra6+ 12. Kd7 Rg6=). 

8... Rh7+ 

But not 8... Rh8? 9. Rg5+ Kf4 10. Kg6.  

9. Kg8 Ra7 10. Rg7 Ra4

10... Ra8+ 11. Kh7 Kf4 12. Rg5 Ra6 13. Rxh5 Kg4=. 

11. g3

11. Rg5+ Kf6=.

11... Kf6 12. Kh7 Ra8! 13. Kh6

13. Rb7 Ra3=. 

13... Rh8+ ! 14. Rh7 Rg8!=.  

B) 5. g3 Rh7

D. 2.6

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Levenfish/Smyslov believed that 5…Rh7 draws but in fact the position is lost for Black. As they pointed rightly out 5... Kf7 6.Rh6 Rg8+ is not good for Black - 7. Kf4 Rg4+ 8. Kf3. 

1) Levenfish/Smyslov considered here only 6. Rh6 Rg7+ 7. Kf4? Rf7+ 8. Ke4 Rg7 9. Kf3 Rf7+ 10. Kg2 Rf5=.  7.Kf4? throws away the win. It was still not too late for White to play 7.Rg6 Rh7 and transpose after 8. Kf5 into the next winning line. 

2) 6. Kf5

D. 2.7

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

6…Kf8

6... Kf7 7. Ra6. 
6... Rf7+ 7. Ke5 Rf1 8. Rg5 Rf3 9. Ke4 Ra3 10. Kf4. 

7. Kf6 Ra7 8. Rg5 Ra6+

8... Rh7 9. Kg6. 

9. Kf5 Rh6 10. Rg6 Rh7 11. Rf6+ Kg7 12. Kg5 Rh8 13. Rf5 Ra8 

13... Rh7 14. Ra5. 

14. Kxh5+-

II. 3. Rg7?

This recommendation of Levenfish/Smyslov throws away the win. 

D. 2.8

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

1) 3…Ke6? 4. Kg5 Rh8 5. g3+- This transposes into the game Polugayevski-Antoshin (D. 3). 

2) 3... Ra4+! 4. Kg3

4. Kg5 Rg4+ 5. Kh6 Rxh4=.  

4... Ra3+ 5. Kh2 Ra8 6.Rg5 Rh8 7.Kg3 Ke6 8.Kf4 Kf6=.  

III. 3. Rg5

We have seen the practical difficulties when the king goes to g5. Playing the rook to g5 is the easiest way to win.

D. 2.9

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

3…Rf8+

3... Ra4+ 4. Kg3 Ra3+ 5. Kh2.  

4. Ke4 Rf2 5. g3+-.
  
Rozenfeld-Nei.pgn ( 3 KB | Downloads )
Back to top
 
IP Logged
 
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
Re: g- and h- pawns versus h-pawn
Reply #1 - 07/11/12 at 19:12:49
Post Tools
Levenfish Smyslov n. 224.pgn
  
Levenfish_Smyslov_n__224.pgn ( 1 KB | Downloads )
Back to top
 
IP Logged
 
Poghosyan
Full Member
***
Offline


I Love ChessPublishing!

Posts: 143
Joined: 10/15/11
g- and h- pawns versus h-pawn
07/11/12 at 19:12:04
Post Tools
Part 1

In this pawn structure the attacking side has only small winning chances. The most important factor here is the position of the Black king. When it is not cut off then the exchange of the pawns usually results in a drawn endgame with g- or h- pawn. If Black's king is cut off from his pawn, then the defence is more complicated. 

D. 1

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Furman-Kopayev
Leningrad 1946

This position was extensively analysed by Levenfish and Smyslov. However their analysis contains some slips.  

1.g5

“A strong move, opening up the White king's path to h5. It also makes it more difficult for Black's pawn to advance” (Levenfish/Smyslov). After 1.g5 the positions is winning for White. Other moves let the win slip. 

A) 1.Rf7? Rb2+ 2.Kf1 Rb1+ 3.Ke2 

Levenfish/Smyslov give here 2 alternatives. 

a) 3…h6 4.Rf6 Rg1=.  
b) 3...Rg1 4.g5 h6 5.gxh6 

D. 1.1

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

Black can draw here easily by 5...Rh1 6.Ra7 Rh2+ 7.Kf1 Kf5= or 5...Rg2+ 6.Kf1 Rh2=, but Levenfish/Smyslov recommend 5…Rg6? 6.h7 Rh6 and evaluate the position as drawn. In fact White wins by 7.Kf2 Rh4 8.Kg3 Rh6 9.Rf4+ Ke5 10.Rh4.  

B) 1.Rh6 Kf4 2.g5 Rb7=.  

Back to D. 1 after 1.g5. 

1...h5

A) 2.Rh6? 

This move of Furman throws away the win. As Levenfish/Smyslov pointed out White could have won by 2.gxh6.  

2...Rb2+ 3.Kg3

3.Kf1 Kf3 4.Ke1 Kg4 (Levenfish/Smyslov). 

3...Rb3+ 4.Kf2 Rb2+ 5.Ke1 Ke3

5...Rh2 6.Rxh5 Ke3= (Levenfish/Smyslov).

6.Kd1 Kd3 7.Kc1 Rh2 8.Rxh5 Kc3 9.Kd1 Kd3 10.Ke1 Ke3 11.Kf1 Kf3 12.Kg1 Rg2+ 13.Kh1 Kf2. Draw. 

B) 2.gxh6! 

D. 1.2

* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
* * * * * * * *
*

2...Rb7 3.Kg3 Ke5 4.Rg6? 

According to the 6-man endgame databases White has here only 2 winning moves - 4.Rf8 or 4.Rf3.  
a) 4.Rf8+- Rh7 5.Kg4 Rxh6 6.Kg5 Ra6 7.Rf5+ Ke4 8.h5+-. 
b) 4.Rf3+- Rh7 5.Kg4 Rxh6 6.Kg5 Rh8 7.Re3+! Kd6 8.h5 Rg8+ 9.Kf5 Rf8+ 10.Kg6 Rf1 11.h6 Rg1+ 12.Kf6 Rf1+ 13.Kg5 Rg1+ 14.Kh4 Rh1+ 15.Rh3+-. 

4...Kf5 5.Rg5+ Kf6 6.Kg4 Ra7 7.Kh5 Rf7 8.Rg6+ Ke7?

This move of Levenfish/Smyslov is another result-changing mistake. Black draws easily by 8... Kf5 9. Rg5+ (9. Rg7 Kf6) 9... Kf6 10. Rg1 (10.Ra5 Rb7) 10... Kf5 11. Rf1+ Ke6 12. Re1+ Kf5 or by 8... Ke5. 

9.Rg7 Kf8 10.Kg6 Rf4

10...Rf1 11.h7 Rg1+ 12.Kh6

11.Ra7!

11.h7? Rg4+ 12.Kf6 Rf4+=. 

11...Rg4+ 12.Kh5 Rb4 13.h7 Rb5+ 14.Kg4 Rb4+ 15.Kg3 Rb3+ 16.Kf2+- (Levenfish/Smyslov).
  
Furman-Kopayev.pgn ( 0 KB | Downloads )
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Topic Tools
‹ Previous Topic | Next Topic ›
Bookmarks: del.icio.us Digg Facebook Google Google+ Linked in reddit StumbleUpon Twitter Yahoo
 
  « Board Index ‹ Board Top  

ChessPub Forum » Powered by YaBB 2.6.12!
YaBB Forum Software © 2000-2026. All Rights Reserved.

Valid RSS Valid XHTML Valid CSS Powered by Perl Source Forge