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Subject: Re: Hydra . Kasi - the error is not at 26 but at 34 (revised)

Author: A. Steen

Date: 16:22:25 11/20/05

Go up one level in this thread


On November 20, 2005 at 17:55:28, Drexel,Michael wrote:

>On November 20, 2005 at 15:41:30, A. Steen wrote:
>
>>On November 20, 2005 at 13:39:30, Uri Blass wrote:
>>
>>>On November 20, 2005 at 13:12:09, Jouni Uski wrote:
>>>
>>>>[Event "II Man vs Machine, Bilbao"]
>>>>[Site "?"]
>>>>[Date "2005.11.20"]
>>>>[Round "?"]
>>>>[White "Hydra"]
>>>>[Black "Kasimyanov"]
>>>>[Result "*"]
>>>>[Annotator "Hob"]
>>>>[PlyCount "59"]
>>>>[EventDate "2005.??.??"]
>>>>
>>>>1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. Be3 Na6 8. O-O
>>>>c6 9. d5 Ng4 10. Bg5 f6 11. Bh4 c5 12. Ne1 Nh6 13. a3 Bd7 14. Nd3 g5 15. Bg3
>>>>Qe7 16. f3 f5 17. Bf2 f4 18. b4 b6 19. h3 Nf7 20. Rb1 h5 21. Rb2 Nh6 22. Be1
>>>>Bf6 23. Nf2 Kh8 24. Qd3 Rg8 25. Nb5 Rg6 26. Bd1 Rag8 27. Nxa7 g4 28. fxg4 Bh4
>>>>29. Nc6 Qg7 30. Bc3 *
>>>>
>>>>
>>>>99,999% sure 1-0?
>>>>
>>>>JOuni
>>>
>>>I do not understand 26...Rag8
>>>Even I could easily avoid that move against a computer because it is easy to see
>>>that it gives a pawn.
>>>
>>>[Event "II Man vs Machine, Bilbao"]
>>>[Site "?"]
>>>[Date "2005.11.20"]
>>>[Round "?"]
>>>[White "Hydra"]
>>>[Black "Kasimyanov"]
>>>[Result "*"]
>>>[Annotator "Hob"]
>>>[PlyCount "59"]
>>>[EventDate "2005.??.??"]
>>>
>>>1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. Be3 Na6 8. O-O
>>>c6 9. d5 Ng4 10. Bg5 f6 11. Bh4 c5 12. Ne1 Nh6 13. a3 Bd7 14. Nd3 g5 15. Bg3
>>>Qe7 16. f3 f5 17. Bf2 f4 18. b4 b6 19. h3 Nf7 20. Rb1 h5 21. Rb2 Nh6 22. Be1
>>>Bf6 23. Nf2 Kh8 24. Qd3 Rg8 25. Nb5 Rg6 26. Bd1 Rag8 27. Nxa7 g4 28. fxg4 Bh4
>>>29. Nc6 Qg7 30. Bc3 hxg4 31.Nxg4 Nxg4 32.Bxg4 Bxg4  33.Rxf4 Bh5 34.Qf1 Bg3
>>>35.Rf7 Qh6 36.Bd2*
>>>
>>>
>>>Uri
>>
>>
>>[D]r6k/p2bq3/np1p1brn/1NpPp1pp/1PP1Pp2/P2Q1P1P/1R3NP1/3BBRK1 b - - 0 26
>>
>>Uri, with great respect, in this position 26 .. Ra-g8 is a fine move and made at
>>the perfect time (in my opinion).  White's pieces (especially the N on b5) are
>>not well-placed for a defence on the K-side, and white has not yet begun a pawn
>>push on the Q-side. To delay is not wise, white may regroup and bring his
>>misplaced N back.
>
>
>Nonsense

I speak "nonsense", do I?  Let us see.

>, to delay would have been _very_ wise.

GM Kasimdzhanov and I don't agree. Nor do the other commentators who are strong
players.

Delaying might cause white to retrieve his knight from its mispositioning on b5
so it can no longer be te,pted with the irrelevant pawn.

That GM Kasimdzhanov lost is because he made an elementary blunder 8 moves
later.  Though he did not find the absolutely optimal line (IMO 27. .. Q-h7),
even in the line he chose he could have drawn easily with 34. .. B-f6. As Uri's
analysis with Fruitchess confirmed. :)  0.00.

>Black has nothing to fear on the Qeenside

Even in the time of Philidor, the error of your analysis would have been
obvious. :)

> and should strive for a quiet
>manouvering game, not for an all-out suicidal attack against the Supercomputer.

If you were correct that the resulting black attack is "suicidal", you would be
correct in asserting I am speaking "nonsense".

But in this thread-

http://www.talkchess.com/forums/1/message.html?463219

There, I prove that black's attack is anything but suicidal.

In fact, if at any stage white deviates from one tightrope sequence of moves,
then white loses.

I agree that it is less than unlikely that Hydra would deviate.

And the result, a draw, which would be an excellent result for K. Why play on
for hours as black when the stupid computer can be tricked into grabbing a pawn
and leading to a forced draw?

It is black who drives the game. All shown in-

http://www.talkchess.com/forums/1/message.html?463219

>Michael

Next time, please mind your tongue, thanks, and check before claiming someone
speaks "nonsense". :)

If you have refutations of my analysis in-

http://www.talkchess.com/forums/1/message.html?463219

then please provide them. I won't hold my breath.

Best,

A.S.



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