PRACTICAL CHESS ENDGAME 2/4/2000

Welcome to this active site. Each week I am going to present to you a endgame position for you to solve or to workout the best continuation. Computer analysis will also be considered. Some of these positions will come from actual historical games. Others will be composed endgame studies, but all the solutions will be relevant to the practical game.

The new position will occur each SUNDAY and I will always be pleased to receive POSITIVE feedback about the positions and the analysis and I will try to acknowledge these where relevant.

ALL RIGHTS RESERVED

Thanks to Henryk Kalafut, Paul Cheng, Federico Giallombardo and Olivier Scalbert. 
THIS WEEK

POSITION 134

White to play & WIN

 

FORSYTH NOTATION:4b3/p6p/1p1k2pP/1P1p1pP1/P2K1P2/4P1N1/8/8: 


LAST WEEK, POSITION 133

Victor Henkin. Soviet player and endgame analyst. He was responsible for the substantial section on Queen vs Rook endings in Averbakh's Comprehensive Chess Endings series. His work is very important in understanding the theory of these very complex endings.

Henkin, 1962

White to play & WIN

 

FORSYTH NOTATION:1k6/8/r2K4/8/8/8/p7/Q7:

It is still possible to make new discoveries in basic chess endings even at the beginning of the 21st century. This is not really surprising when you consider the amount of computer assistance now available to help with analysis and with millions of positions to consider in these endings there is plenty of scope for new discoveries.

Sometimes computer analysis will indicate that published theory of a particular ending is incorrect. Take the above position. Henkin for many years thought this position was drawn and the analysis was published in Averbakh's Comprehensive Chess Endings series. Black has just played Ra7-a6+ and the analyst thought White hasn't time to create a mating net. But analysis using a computer database indicates that the position after Ra6+ is won for White. The winning method involves the stronger side capturing the remaining pawn.

1.Kd7 Ra7+

2.Kd8 ...

The King hides from the Rook.

2...Kb7

After 2.Kc6? Rc7+ 3.Kd6 Rc2!=

3.Qg7+ Kb6

If the King goes to the 8th Rank White wins quickly: 3...Ka8 4.Qg2+ Kb8 5.Qb2+ Rb7 6.Qxa2 +-

4.Qd4+ Kb7

5.Qd7+ ...

Henkin's analysis went: 5.Qb4+ Kc6 6.Qc4 Kc6 and White is still winning but the analyst could take it no further and so he came up with the wrong conclusion of a draw.

5...Kb6

6.Qd6+ Kb7

7.Qc7+...

The King is driven on to the fateful a-file.

7... Ka6

8.Qc8+ Ka5

8....Kb6 9.Qb8+ winning.

9.Qb8!..

White now wins the a-pawn.

9... Ra6

9...Ka6 10.Qb2 Ra8+ and Black will run out of checks.

10.Qb2! ...

The a-pawn is lost.

A beautiful ending. There is no need to take it any further although the Queen vs Rook ending is never straight forward. The computer endgame database indicates that White can win in under 50 moves from this position.  


Federico Giallombardo of Italy wins in March.

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