A very hard endgame study

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Arpad Rusz
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A very hard endgame study

Post by Arpad Rusz »

Richard Becker
(Magyar Sakkvilág, 2014)

[D]8/p6p/4P2p/p3K1pP/pPk5/p2r2p1/P5R1/8 w - - 0 1

White wins
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Ignacio
Posts: 177
Joined: Wed Mar 08, 2006 8:15 pm

Re: A very hard endgame study

Post by Ignacio »

Illegal position?
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zullil
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Full name: Louis Zulli

Re: A very hard endgame study

Post by zullil »

Ignacio wrote:Illegal position?
Proof? :wink:

Haven't thought much, but by sacrificing pawns and pieces one can certainly get a lot of black pawns to the edges of the board.
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zullil
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Full name: Louis Zulli

Re: A very hard endgame study

Post by zullil »

Ignacio wrote:Illegal position?
No, the position is legal.

[pgn]
1. c4 Nh6 2. c5 Ng8 3. c6 dxc6 4. f4 Kd7 5. f5 Ke8 6. f6 exf6 7. g4 Ke7 8. g5 Ke8 9. g6 fxg6 10. d3 Kf7 11. Bh6 gxh6 12. Nh3 Kg7 13. Ng5 fxg5 14. Nc3 Kf7 15. Na4 Kg7 16. Nb6 cxb6 17. e4 Kf7 18. Rg1 Be6 19. Rh1 Bc4 20. dxc4 Na6 21. Kf2 Nc7 22. Ke1 Nb5 23. cxb5 cxb5 24. Qa4 bxa4 25. Rc1 Kg7 26. Rc5 Kf7 27. Ra5 bxa5 28. Ba6 bxa6 29. b4 a3 30. Ke2 a4 31. Ke3 a5 32. h4 g4 33. h5 g5 34. Ke2 g3 35. Ke3 Qd3+ 36. Kxd3 Bc5 37. Ke2 Be3 38. Kxe3 Ne7 39. Kd3 Nc6 40. Ke3 Nd4 41. Kxd4 Rhd8+ 42. Ke3 Rd3+ 43. Kxd3 Ke7 44. Ke3 Kd6 45. Kd3 Rd8 46. Ke3 Kc6 47. e5 Kd5 48. Kf3 Kc4 49. Ke4 Rd3 50. Kf5 Rd2 51. Rg1 Rd3 52. Rg2 Rd2 53. e6 Rd3 54. Ke5 Re3+ 55. Kf5 Rc3 56. Ke5 Rd3
[/pgn]

[D]8/p6p/4P2p/p3K1pP/pPk5/p2r2p1/P5R1/8 w - -
Obviously, I made no effort at minimality! :D
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Arpad Rusz
Posts: 273
Joined: Sat Apr 17, 2010 2:34 pm
Location: Budapest

Re: A very hard endgame study

Post by Arpad Rusz »

There are 10 missing white pieces and the black pawn structure needs exactly 10 captures. So the position seems legal.
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Ajedrecista
Posts: 1971
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: A very hard endgame study.

Post by Ajedrecista »

Hello Arpad:
Arpad Rusz wrote:Richard Becker
(Magyar Sakkvilág, 2014)

[D]8/p6p/4P2p/p3K1pP/pPk5/p2r2p1/P5R1/8 w - - 0 1

White wins
Very hard indeed. I think that the key move is 1.- b5 and white should try to play Re2 if he/she can. Black must be careful after 1.- b5 according to SF 6, not everything is safe for him/her. Is right my plan?

Regards from Spain.

Ajedrecista.
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Arpad Rusz
Posts: 273
Joined: Sat Apr 17, 2010 2:34 pm
Location: Budapest

Re: A very hard endgame study.

Post by Arpad Rusz »

Yes, 1.b5! is the key move!
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JJJ
Posts: 1346
Joined: Sat Apr 19, 2014 1:47 pm

Re: A very hard endgame study.

Post by JJJ »

I play this position everyday, this is why it is very interesting to study it.
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Look
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Location: Iran
Full name: Mehdi Amini

Re: A very hard endgame study.

Post by Look »

JJJ wrote:I play this position everyday, this is why it is very interesting to study it.
You mean you play like up to this position every day? :D
Farewell.
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BeyondCritics
Posts: 396
Joined: Sat May 05, 2012 2:48 pm
Full name: Oliver Roese

Re: A very hard endgame study

Post by BeyondCritics »

Arpad Rusz wrote:Richard Becker
(Magyar Sakkvilág, 2014)

[D]8/p6p/4P2p/p3K1pP/pPk5/p2r2p1/P5R1/8 w - - 0 1

White wins
A sensible attempt compiled from analysis of komodo 6
[pgn]

[FEN "8/p6p/4P2p/p3K1pP/pPk5/p2r2p1/P5R1/8 w - - 0 1"]

1.b5! Re3+ 2.Kd6 Rd3+ 3.Kc6 Re3 4.Kd7 Rd3+ 5.Ke8 Re3 6.e7 Kb4 7.Rc2! g4 8.Rg2 Kc4 9.Rg1! Re2 10.Rxg3 Rxa2 11.Rxg4+ Kb3 12.Re4 Rc2 13.b6!! axb6 14.Kd8! a2 15.e8=Q a1=Q 16.Qb5+ +-- *
[/pgn]

There are some sidelines to explored. If you analyze it, you should disable null moves, since zugwang is of imperative importance here.
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