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Subject: Re: Testposition - A Sparking Jewel

Author: Enrique Irazoqui

Date: 08:20:17 02/28/01

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On February 28, 2001 at 10:55:02, Sune Larsson wrote:

>On February 28, 2001 at 10:12:55, Enrique Irazoqui wrote:
>
>>On February 28, 2001 at 09:56:04, Sune Larsson wrote:
>>
>>>
>>>  1n6/4k2p/p3ppp1/1pPp4/3P1PP1/3NP3/P3K2P/8 w - - 0 1
>>>
>>>  Take off your hats folks, cause this is a real piece of art!
>>>  A stunning performance by a great player. If you can figure out
>>>  who handles the white pieces this way, you'll win a nice price -
>>>  "My 60 Memories" by Ossi Weiner, provided of course that some justice
>>>  is done in the old country ;) (Sorry, this was a little European joke
>>>  that slipped out of my mouth.) Back to the game - we have a knight ending
>>>  with 7 pawns each. If black's knight was on c6, his queenside majority
>>>  would be a menace. As things stand, white can engineer a dramatic central
>>>  breakthrough:
>>>
>>>  1.f5!!  [If now 1.-gxf5 2.gxf5 exf5 3.Nf4 wins  - and 1.-Nc6 2.Nf4!]
>>>          Black stops Nf4, but succumbs to a brilliant diversion.
>>>
>>>  1.-g5 2.Nb4 a5 3.c6! Kd6 4.fxe6! Nxc6 5.Nxc6 Kxc6 6.e4! with a winning
>>>  pawn ending.  [6.-dxe4 7.d5+ etc.]
>>>
>>>  Test1: White is winning in a forced, sparking way. Too hard for the comps?
>>
>>Easy. :)
>>
>>New position
>>1n6/4k2p/p3ppp1/1pPp4/3P1PP1/3NP3/P3K2P/8 w - - 0 1
>>
>>Analysis by DEEP FRITZ   :
>>
>>1.e4--
>>  ³  (-0.37)   Depth: 1/3   00:00:00
>>1.e4--
>>  ³  (-0.37)   Depth: 1/3   00:00:00
>>1.h4!
>>  =  (0.16)   Depth: 1/3   00:00:00
>>1.h4!
>>  ±  (0.72)   Depth: 1/3   00:00:00
>>1.h4 Nc6
>>  ²  (0.44)   Depth: 2/5   00:00:00
>>1.g5!
>>  ²  (0.56)   Depth: 2/5   00:00:00
>>1.g5 fxg5 2.fxg5 Nc6
>>  ²  (0.53)   Depth: 3/8   00:00:00
>>1.g5 fxg5 2.fxg5 Nc6 3.h4
>>  ²  (0.56)   Depth: 4/11   00:00:00
>>1.g5 fxg5 2.fxg5 Nc6 3.h4 Kd7
>>  ²  (0.53)   Depth: 5/10   00:00:00  1kN
>>1.f5!
>>  ²  (0.56)   Depth: 5/13   00:00:00  2kN
>>1.f5! g5
>>  ²  (0.63)   Depth: 5/13   00:00:00  4kN
>>1.f5 g5 2.fxe6 Nc6 3.h4 Kxe6 4.h5
>>  ²  (0.53)   Depth: 6/13   00:00:00  8kN
>>1.h4!
>>  ²  (0.56)   Depth: 6/15   00:00:00  11kN
>>1.h4! h5 2.gxh5 gxh5
>>  ²  (0.59)   Depth: 6/15   00:00:00  13kN
>>1.h4 h6 2.g5 hxg5 3.hxg5 fxg5 4.fxg5 Nc6 5.Nf4 Kf7
>>  ²  (0.59)   Depth: 7/16   00:00:00  21kN
>>1.f5!
>>  ²  (0.63)   Depth: 7/18   00:00:00  27kN
>>1.f5! g5 2.a3 Kd7 3.fxe6+ Kxe6 4.Nb4 h6
>>  ±  (0.72)   Depth: 7/18   00:00:00  32kN
>>1.f5 g5 2.a3 h6 3.fxe6 Kxe6 4.Nb4 a5 5.Nd3
>>  ±  (0.75)   Depth: 8/19   00:00:00  54kN
>>1.f5 g5 2.fxe6 Nc6 3.a3 a5 4.h4 Kxe6 5.h5
>>  ²  (0.59)   Depth: 9/19   00:00:00  86kN
>>1.f5 g5 2.fxe6 Nc6 3.Ne1 Kxe6 4.Nf3 a5 5.h3 b4
>>  ²  (0.44)   Depth: 10/21   00:00:00  207kN
>>1.g5!
>>  ²  (0.47)   Depth: 10/21   00:00:00  211kN
>>1.g5! fxg5 2.fxg5 Nc6 3.h4 a5 4.Kf3 b4 5.Kf4 a4 6.Ne5
>>  ±  (0.78)   Depth: 10/21   00:00:00  252kN
>>1.g5 fxg5 2.fxg5 Nc6 3.h4 Kd8 4.Kf3 Ne7 5.Nf4 Kd7 6.e4 Nc6
>>  ±  (0.88)   Depth: 11/20   00:00:00  342kN
>>1.g5 fxg5 2.fxg5 Nc6 3.h4 Kd8 4.Kf3 Ne7 5.Nf4 Kd7 6.e4 Nc6
>>  ±  (0.88)   Depth: 12/23   00:00:01  538kN
>>1.g5--
>>  ²  (0.56)   Depth: 13/24   00:00:01  811kN
>>1.g5--
>>  ²  (0.56)   Depth: 13/24   00:00:01  858kN
>>1.h4!
>>  ²  (0.59)   Depth: 13/25   00:00:02  1202kN
>>1.h4 Nc6 2.g5 f5 3.Kf3 a5 4.Ke2 b4 5.Ne5 Nxe5 6.fxe5 a4
>>  ²  (0.69)   Depth: 14/27   00:00:06  3107kN
>>1.g5!
>>  ±  (0.72)   Depth: 14/27   00:00:06  3450kN
>>1.f5!
>>  ±  (0.75)   Depth: 14/27   00:00:10  5167kN
>>1.f5! g5 2.Nb4 a5 3.c6 Kd6 4.fxe6 Nxc6 5.Nxc6 Kxc6 6.e4 dxe4
>>  ±  (1.22)   Depth: 14/29   00:00:11  6020kN
>>1.f5 g5 2.Nb4 a5 3.c6 Kd6 4.fxe6 Nxc6 5.Nxc6 Kxc6 6.e4 dxe4
>>  ±  (1.06)   Depth: 15/30   00:00:14  7372kN
>>1.f5!
>>  ±  (1.38)   Depth: 16/32   00:00:23  12189kN
>>1.f5! Nc6 2.Nf4 gxf5 3.gxf5 Nb4 4.a3 Nc2 5.Nxe6 Nxa3 6.Nc7 a5
>>  +-  (1.84)   Depth: 16/34   00:01:07  36420kN
>>
>>(Irazoqui, Cadaqués 28.02.2001)
>>
>>
>>>  Test2: Who played white and composed this beauty? [Sorry, no price ;)
>>
>>Easy #2. :))
>>
>>(not so easy. CB8 didn't find it, but CB7 did)
>>
>>[Event "Hastings"]
>>[Site "Hastings"]
>>[Date "1895.??.??"]
>>[Round "?"]
>>[White "Pillsbury, Harry Nelson"]
>>[Black "Gunsberg, Isidor"]
>>[Result "1-0"]
>>[ECO "D94"]
>>[PlyCount "79"]
>>[EventDate "1895.08.??"]
>>[Source "ChessBase"]
>>
>>1. d4 d5 2. c4 c6 3. e3 g6 4. Nc3 Bg7 5. Nf3 Nf6 6. Bd3 O-O 7. Ne5 dxc4 8. Bxc4
>>Nd5 9. f4 Be6 10. Qb3 b5 11. Bxd5 Bxd5 12. Nxd5 Qxd5 13. Qxd5 cxd5 14. Nd3 Nd7
>>15. Bd2 Rfc8 16. Ke2 e6 17. Rhc1 Bf8 18. Rxc8 Rxc8 19. Rc1 Rxc1 20. Bxc1 Bd6
>>21. Bd2 Kf8 22. Bb4 Ke7 23. Bc5 a6 24. b4 f6 25. g4 Bxc5 26. bxc5 Nb8 27. f5 g5
>>28. Nb4 a5 29. c6 Kd6 30. fxe6 Nxc6 31. Nxc6 Kxc6 32. e4 dxe4 33. d5+ Kd6 34.
>>Ke3 b4 35. Kxe4 a4 36. Kd4 h5 37. gxh5 a3 38. Kc4 f5 39. h6 f4 40. h7 1-0
>>
>>Enrique
>
> Very alert and nice! I really like this ending. But I wonder what prevented
> CB8 from finding this position?  I faced exactly the same problem. Hm...

Happens all the time, which made me reinstall CB7. But then I miss some features
and the layout of CB8. :(

Sune, keep posting positions, I love them. And thanks.

Enrique

> Superb analyse from Deep Fritz though. Worth noticing is that we saw
> two examples of the famous "Pillsbury bind" in this game. 7.Ne5 + 9.f4!
> and 23.Lc5 + 24.b4!
>
> Sune
>>
>>>  Sune



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