Author: Kurt Utzinger
Date: 02:30:58 07/29/04
Go up one level in this thread
On July 29, 2004 at 02:06:42, Scott Gasch wrote:
>On July 28, 2004 at 20:49:22, John Merlino wrote:
>
>>On July 28, 2004 at 20:17:31, Uri Blass wrote:
>>
>>>On July 28, 2004 at 19:38:16, John Merlino wrote:
>>>
>>>>On July 28, 2004 at 18:44:03, Ignacio Santos Crespo wrote:
>>>>
>>>>>2. Bb6!
>>>>>
>>>>>1. Rb5+ Nb6 2. Bxb6
>>>>
>>>>2...Rh2 3.Kg3 Rxh1.
>>>>
>>>>Now what?
>>>>
>>>>jm
>>>
>>>
>>>I know this study
>>>
>>>2...Rh2 3.Kg4! Rxh1 4.Bg1+ with the idea 5.Rb1 and the black rook has no moves
>>>and the black king cannot move forever to white squares so white wins.
>>>
>>>Uri
>>
>>So, indeed, the hard part (for chess engines) is not finding 1.Rb5+, but rather
>>finding 2.Bxb6, 3.Kg4 and 4.Bg1+.
>>
>
>monsoon:
>
> 1. +9.46 0.01 127 Rb5+ Nb6 Bxb6
> 2- +8.43 0.01 983 **FL** --
> 2- +6.65 0.02 1132 **FL** --
> 2. +8.61 0.02 1547 Rb5+ Nb6 Rxb6+ Ka7 Rb7+ Ka8 Rc7+ Kb8
> 3- +7.01 0.04 4321 **FL** --
> 3- +5.72 0.05 5383 **FL** --
> 3. +4.88 0.06 6889 Rb5+ Nb6 Rxb6+ Kc8
> 4. +4.67 0.10 13851 Rb5+ Nb6 Rxb6+ Kc8 Bb7+ Kxd8 Rxh6 Rh2+ K
>g5 Rxh6 Kxh6
> 5. +4.53 0.29 35594 Rb5+ Nb6 Rxb6+ Kc8 Rb1 Kxd8 Bc6 Rd4+ Kh5
>
> 6. +4.59 0.91 83699 Rb5+ Nb6 Rxb6+ Kc8 Bb7+ Kxd8 Bf3 Rd3 Rb8
>+ Kc7
> 7. +4.41 2.53 201758 Rb5+ Nb6 Rxb6+ Kc8 Bf3 Rxd8 Ra6 Kc7 Rxh6
>
> 8. +4.43 8.64 763084 Rb5+ Nb6 Bxb6 Rh2+ Kg4 Rxh1 Bg1+ Kc7 Rb1
> h5+ Kg3 h4+ Kf4
> 9. +4.38 13.97 1438663 Rb5+ Nb6 Bxb6 Rh2+ Kg4 Rxh1 Bg1+ Kc7 Rb1
> Kc8
>10. +4.48 27.00 3117698 Rb5+ Nb6 Bxb6 Rh2+ Kg4 Rxh1 Bg1+ Kc7 Rb1
> Kc8
>11. +4.53 49.45 7423620 Rb5+ Nb6 Bxb6 Rh2+ Kg4 Rxh1 Bg1+ Kc7 Rb1
> Kc8
>12. +4.43 108.30 22916743 Rb5+ Nb6 Bxb6 Rh2+ Kg4 Rxh1 Bg1+ Kc7 Rb
>1 Kc8
Fantastic: monsoon [a private engine?] finds
the solution of this very difficult test position.
Kurt [http://www.utzingerk.com]
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