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Subject: Re: Beautiful Rook Sacrifice..!

Author: Keith Ian Price

Date: 12:15:40 03/27/02

Go up one level in this thread


On March 27, 2002 at 14:13:15, Art Basham wrote:

>On March 27, 2002 at 12:23:46, Roy Eassa wrote:
>
>>On March 27, 2002 at 09:14:09, Art Basham wrote:
>>
>>>Here white ( a GM) played Rxd5+ and won...!
>>>
>>>Sorry I do not have all of the moves in this exciting game...
>>>
>>>I posted this same diagram several years ago, and someone here said that a
>>>certain personality in ChessMaster 4000 (or 5000)
>>>found it in 1 sec. at only about 4 ply..!!
>>>
>>>[D]r1bk3r/pp2n2p/2n2N2/1R1p3Q/2p4P/P1p5/2qBBPP1/4K2R w - -
>>>
>>>The Doctor?  program also finds it in about 5 sec. on my machine.
>>
>>
>>But does it see that White is winning?
>>
>>Analysis:
>>
>>1.Rxd5+!
>>
>>   [1.Bg5 Qa2 2.Rxd5+ Kc7 3.Qf7 ±]
>>
>>1...Nxd5 2.Qxd5+ Ke7
>>
>>   [2...Kc7 3.Bf4+ Kb6 4.Be3+ Kc7 5.Qf7+ Kd8 6.Nd5 +-]
>>
>>3.Qc5+! Kxf6
>>
>>   [3...Kf7 4.Bh5+ Kxf6 5.Qg5+ transposes]
>>
>>4.Qg5+ Kf7 5.Bh5+ Ke6 6.Bg4+ Kf7 7.Qd5+ Kf8 8.Bh6+ Ke8 9.Bh5+ Qg6 10.Bg7 +-
>
>
>===================
>
>thanks Roy for posting the moves here! Yes, you have them correct..
>the knight at f6 is also sacrificed in the game as I remember it...
>
>You are right, some programs play the correct first move, but only show 0.00
>in the evaluation....guess they are going for a draw..:-(
>
>thanks for pointing this out!
>
>ab

Fritz6 shows the 0.00 score until ply 14 when it improves to 0.81. At ply 16 it
finally shows a win +- at 1.41. This seems almost as good as a nolot position,
except that you must look to the score to find if it really understands or not,
and not just the move itself.

kp




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