Author: Uri Blass
Date: 23:01:49 12/29/00
Go up one level in this thread
On December 29, 2000 at 20:50:10, Alexander Kure wrote:
>On December 29, 2000 at 20:28:06, Uri Blass wrote:
>
>>On December 29, 2000 at 18:19:58, Alexander Kure wrote:
>>
>>>Hi everybody,
>>>
>>>In the currently running Wels (Austria) tournament held by Mr. Wiesenecker in
>>>the game Nimzo 8 vs. SOS an interesting position showed up.
>>>
>>>[D]8/8/5kp1/7p/7K/4BP2/8/8 w - - 0 72
>>>
>>>In this position Nimzo 8 played 73.f4?? and despite a +10.00 evaluation at moves
>>>75 and 76 the score immediately dropped to 0 in the following moves!
>>>
>>>The following idea would have won easily:
>>>73.Bb6 Kf5 74.Bc7 Kf6 75.f4 {only now!} Kf5
>>>76.Be5 {controlling f6} Ke6
>>>{76...Ke4 77.Kg5 Kf3 78.Kxg6 h4 79.f5 game over}
>>>77.Kg5 Kf7 78.Bd4 {winning}
>>
>>What about 73.f4 Kf5 74.Kg3
>>
>>Crafty with part of the 5 piece tablebases(not including the KBP vs KP) failed
>>high on 74.Kg3 after a few minutes and the score get up every iteration(the
>>score is +5.96 at the end of iteration 27.
>>
>>The idea is 74...Ke4 75.Bb6 Kf5 76.Bd8 Ke4 77.Bc7 Kf5 78.Kh4 Kf6 79.Bb8 Kf5
>>80.Be5 when black is in zunzwang.
>>
>>Uri
>
>Hi Uri,
>
>This is exactly the winning method i described above, but with a few more moves
>involved.
>So Crafty should have avoided 73.f4?
Yes
Crafty can avoid the move 73.f4 after a few minutes on my pIII450 and see
another move as +10(Bf4 if I remember correctly).
>74.Kg3 seems to save the game, so maybe 75.Kg5 as played in the game was the
>decisive mistake?
Probably but it is better if someone with all the 5 piece tablebases will
analyze it.
Uri
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