PRACTICAL CHESS ENDGAME

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04/05/2003

Editor: Brian Gosling

ALL RIGHTS RESERVED

Welcome to this active site. Each week I am going to present to you an 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.

Thanks to Antonio Senatore, Federico Giallombardo, Jon Palmer, Henryk Kalafut, Gerard O' Reilly, Alexander Voyna and Jim Monaghan .
THIS WEEK

POSITION 285

White to Play and WIN

FORSYTH NOTATION

:8/1b2k3/pn1pB1p1/BpbPp1P1/4P3/1P4K1/P1N5/8 w - - 0 1:

> > Cumulative competition
 LAST WEEK, POSITION 284

Mark Liburkin, (1910-53).

Soviet Study Composer. Followed in the footsteps of Troitsky, Kubbel and the Platov brothers. His early death robbed the world of a truly great composer who showed purity, economy and originality in his endgame compositions.

Vechernaya Moscva, 1933

White to Play and WIN

FORSYTH NOTATION

:1b6/4P3/1P2PN2/8/2P5/P1k5/P1p2P2/K5B1 w - - 0 1:

White answers the immediate mating threat but the attack with the Bishop along the a1-h8 diagonal is more difficult to cope with. The hallmark of this study is the three ingenious underpromotions conceived to deal with Black's threats.

1.Ne4+ Kd3

1...Kxc4? 2.Kb2 Kd3 3.Nc5+ Kd2 4.Nb3+ Kd1 5.Kc3 wins;

2.Nc5+! Kc3!

2...Kd2? 3.Nb3+ Kd1 4.f4! Bxf4 5.Bd4 wins;

3.Nb3 Be5!

White now has to play very ingeniously to meet the threat along the dark diagonal.

4.f4 ...

4.f3?? Kxc4+ 5.Bd4 Bxd4+ 6.Nxd4 c1Q#; 4.Bh2?? Bf6 5.e8N Bh8 wins.

4... Bg7

5.e8N! ...

The first underpromotion to avoid being mated.

5... Bh8

6.f5! ...

Threatening to block the Bishop's discovered check with the f-pawn

6... Be5

7.Bh2! ...

This important sacrifice deflects the Bishop away from the deadly diagonal.

7... Bxh2

8.b7 ...

8.Nf6?? Be5 9.Nd7 Bd4 10.Ne5 c1Q 11. Nxc1 Kc2#;

8... Be5

8...Kd3? 9.Nc1+ Kd2 10.Kb2 Be5+ 11.Kb3 Kxc1 12.Nc7! Kb1 13.b8Q c1Q 12.Qa4+ White is winning because of his material plus;

9.b8B! ...

The second underpromotion.

9.b8Q?? Kxc4+ 10.Qxe5 c8Q+ 11. Nxc1 stalemate;

9... Bxb8

10.Nc7! ...

White's sacrifice enables him to promote the e-pawn just in time.

10...Bxc7

11.e7 Be5

12.e8R! ...

The third underpromotion is necessary to avoid the stalemate trap:

12. e8Q Kxc4+ 13. Qxe5 c1Q+ 14. Nxc1 stalemate.

12... Bf6

Renewing the mating threat. If 12...Bg7 13.Re6 Bd4 follows as the main line.

13.Re6 ...

13... Bd4

The following unique winning sequence doesn't seem to have been incorporated into the original study. It is added for the sake of completeness and anyway is far from obvious !!

14.Re1! Bf6

15.Rb1! Kd3+

15...cxb1Q+ 16.Kxb1 Kxc4 17.a4 wins;

16.Rb2 Ke2

White has to give his King some space.

17.a4 ...

17.c5 also wins 15...Kd1 18.a4 c1Q+ 19.Nxc1 Kxc120.a3 Bxb2+ 21.Ka2 +-;

17...Kd1

18.a3 c1Q+ 19.Nxc1 Kxc1 20.c5 Bxb2+ 21.Ka2 Be5 22.a5 wins;

The Bishop canot stop one of the pawns from queening.

A remarkable study of rich content which shows the great skill of Mark Liburkin.

Gens Una Sumas. 
Alexander Voyna, Antonio Senatore and Henryk Kalafut win in April.

> > Cumulative competition


  COMPETITIONS for 2003

1. Cumulative 2003 Prizes: 1st £100 or equivalent, 2nd £50, 3rd £30; 4th £20. (Total Prize Money=£200) Entries limited to 20 solvers. This event will run from 5/1/2003 to 22/12/2003 with a recess in July. Present rules apply but note the prizes will go to those participants who climb the ladder the greatest number of times during the year. The relative position of the solver's name on the ladder will decide the allocation of prizes.


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Pre 10/02/02Archives

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