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Subject: Re: Deep Shredder blunder

Author: Eduard Nemeth

Date: 23:32:58 03/21/01

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On March 21, 2001 at 21:56:13, John Merlino wrote:

>On March 21, 2001 at 18:45:32, Eduard Nemeth wrote:
>
>>On March 21, 2001 at 17:33:12, James T. Walker wrote:
>>
>>>Here is a position where Deep Shredder blundered at G/30 minutes.
>>>Deep Shredder played Kg3?? alowing Kf1 and quickly lost the game
>>>
>>>[D]2r5/5P2/4P2p/6p1/5k2/5P1P/8/6K1 b - a2 0 1
>>
>>Hi!
>>
>>I tested this position on my P600.
>>
>>Deep Shredder, hash 128 MB, (with all TBs here): Kxf3 after 1:05 minutes.
>>Deep Shredder, hash 128 MB, (without TBs): Kxf3 after 51 seconds.
>>
>>Deep Fritz, hash 128 MB, (without TBs): Kxf3 after 39 seconds.
>>
>>Chess Tiger 13.0, hash 96 MB: Kxf3 after 5 seconds!
>>
>>I played many games 30', and I think DS would Kg3 play on my PC on Blitz 30'
>>(DF, i think not) but on tournament level never! Chess Tiger play Kxf3, too in
>>blitz-games.
>>
>>Kind Regards,
>>Eduard
>
>Chessmaster 8000 plays Kxf3 immediately. What I can't understand is why ANY
>program would play Kg3 (but, then again, I'm not a very good chess player)....
>
>Time	Depth	Score	Positions	Moves
>0:00	3/4	0.00	6919		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>0:00	5/6	0.00	36901		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>0:00	6/7	0.00	85282		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>0:01	7/8	0.00	203709		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>0:04	8/9	0.00	481872		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>0:10	9/10	0.00	1091353		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>0:21	10/11	0.00	2263455		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>0:42	11/12	0.00	4425214		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>1:22	12/13	0.00	8345320		1...Kxf3 2. e7 Rc1+ 3. Kh2 Rc2+
>					4. Kg1 Rc1+
>
>jm

Thanks for this analysis John. I have the CM 6000 and i belive, CM it is a very
strong program. In Aufsess 2001 (Germany) played CM6555 very, very good!

Why any programs would play Kg3? This is (i think) a very good question for
all program-authors! Here I have no answer. I think, that many programs in this
position would mates and seen "first" 1.Kg3 Kf1 2.Kxf1, oh my bad english sorry,
in german language I need say: "es droht weiterhin zunächst Matt plus Material-
gewinn".

Best wishes,
Eduard



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