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Subject: Re: Behind Deep Blue: 3rd print with new Hsu afterword

Author: Uri Blass

Date: 05:08:58 05/10/04

Go up one level in this thread


On May 10, 2004 at 07:33:38, martin fierz wrote:

>On May 10, 2004 at 05:20:38, Uri Blass wrote:
>
>>On May 10, 2004 at 05:00:46, martin fierz wrote:
>>
>>>On May 08, 2004 at 11:51:12, Robert Hyatt wrote:
>>>
>>>>On May 08, 2004 at 10:50:57, Anthony Cozzie wrote:
>>>>
>>>>>On May 08, 2004 at 07:18:27, Vasik Rajlich wrote:
>>>>>
>>>>>>On May 08, 2004 at 04:34:40, Sune Fischer wrote:
>>>>>>
>>>>>>>
>>>>>>>>>You are absulutely right.
>>>>>>>>>It is obvious that humans already solved chess so they know if a move is a
>>>>>>>>>blunder or not a blunder so you can be sure that all the question marks are
>>>>>>>>>correct.
>>>>>>>>>
>>>>>>>>>It is also obvious that the number of mistakes is what decides the game so if
>>>>>>>>>your opponent did 2 mistakes you can let yourself to do one mistake like letting
>>>>>>>>>him to force mate and you are not going to lose.
>>>>>>>>>
>>>>>>>>>:_(
>>>>>>>>>
>>>>>>>>>Uri
>>>>>>>>
>>>>>>>>You know, Uri, I have never seen you do anything but post how other people are
>>>>>>>>wrong (never with any reasons of course).  Many other people have noticed your
>>>>>>>>unending flood of negativity.  It is difficult to consider this post as anything
>>>>>>>>other than a flame.  It appears I am going to have to take off the kid gloves
>>>>>>>>and dispose of you.
>>>>>>>
>>>>>>>Isn't it natural to only post if you disagree?
>>>>>>>
>>>>>>>Anyway, I suspect Uri has a point.
>>>>>>>It's not unusual for computers to play "unatural" moves, just think of the
>>>>>>>Hedgehog Junior played against Kasparov.
>>>>>>>
>>>>>>>All the time the GM's were saying how strange Junior's moves were, how "it
>>>>>>>showed no understanding of the position" blah blah blah.
>>>>>>>
>>>>>>>So please explain why Kasparov suddenly had to fight for a draw after 10
>>>>>>>questionmark moves from Junior!
>>>>>>>
>>>>>>>-S.
>>>>>>
>>>>>>I never thought this day would come - but I agree with Uri here. :-)
>>>>>>
>>>>>>Sports aren't about beautiful play. Sports are about winning. If someone is
>>>>>>playing ugly, and winning, then it's your sense of aesthetics which needs to be
>>>>>>reviewed.
>>>>>>
>>>>>>Computers have a long history of winning ugly. In the recent Fritz-Kasparov and
>>>>>>Junior-Kasparov matches, the machines made many many more "mistakes" (according
>>>>>>to human opinion) than Kasparov. But - if these mistakes aren't punished - are
>>>>>>they really mistakes? Is it a mistake to leave Shaq wide open for three point
>>>>>>shots? (Or send him to the line for "free" throws?) It's impossible to speak
>>>>>>about objectivity here. You can only look at the results.
>>>>>>
>>>>>>Vas
>>>>>
>>>>>Let's take a look at some of the moves the annotator didn't like:
>>>>>
>>>>>[D]r2q1rk1/pp1n1ppp/2pbpn2/3p3b/8/1P1PPNPP/PBPN1PB1/R2Q1RK1 b - - 0 10
>>>>>
>>>>>Zappa plays the obvious 10 ...e5.  Deep Blue played 10 ...h6.  I won't call this
>>>>>a bad move, but it's clearly a pass move.
>>>>
>>>>That isn't very convincing.  Did you look at _your_ PV?  move 4?  :)
>>>>
>>>>Order doesn't mean much to alpha/beta as it scores positions, not moves as they
>>>>are played.
>>>>
>>>>First impression is that h6 and e5 transpose to the _same_ position...
>>>>
>>>>
>>>>>
>>>>>1... e6-e5 2. e3-e4 Rf8-e8 3. Rf1-e1 Ra8-c8 4. a2-a4 h7-h6 5. Bb2-c3 Qd8-c7 6.
>>>>>a4-a5 Bd6-c5 7. Qd1-b1
>>>>> = (0.25)       Depth: 12/34    00:01:09.00     41299kN
>>>>>
>>>>>[D]r4rk1/pp1n1pp1/2pbpn1p/q2p3b/8/PP1PPNPP/1BPN1PB1/R3QRK1 b - - 0 12
>>>>>
>>>>>Once again Zappa wants e5.  Deep Blue played Bc7, which is a pass move at best,
>>>>>and I would think the bishop is actually better on D6.
>>>>>
>>>>>1... e6-e5 2. c2-c4 Qa5-a6 3. d3-d4 e5-e4 4. Nf3-h4 Ra8-e8 5. Nh4-f5 Bd6-c7 6.
>>>>>Ra1-c1 Nd7-b6 7. c4xd5 Nb6xd5
>>>>> = (0.24)       Depth: 11/32    00:00:49.38     30722kN
>>>>
>>>>Same comment.  Look at your move 5.  :)
>>>>
>>>>You agree with DB more than you think...
>>>>
>>>>
>>>>>
>>>>>[D]r4rk1/ppbn1pp1/2p1pn1p/q2p3b/7N/PP1PP1PP/1BPN1PB1/R3QRK1 b - - 0 13
>>>>>
>>>>>And Zappa is still dying for e5 :)  Deep Blue played g5?, which cannot be
>>>>>considered anything but a blunder.
>>>>
>>>>Kasparov said "this is black's only hope.  Any other move simply loses.  This
>>>>makes it a fight."
>>>
>>>which makes it pretty clear that before something already went wrong for
>>>black... if you have to play g5, even if it's still a fight, something is very
>>>wrong.
>>>
>>>cheers
>>>  martin
>>
>>It is not clear for me.
>>I know that pushing pawns near the king is bad in a lot of cases but it is not
>>always bad and this is the reason that I do not have high scores against it.
>>
>>Uri
>
>there are instances where pushing pawns in front of your king is ok. there are
>others where it's not ok. they are rather easy to distinguish most of the time
>(some simple rules are sufficient for this) and i'm surprised that you don't
>understand that it's not such a great idea here... i know you are a born
>skeptic, but perhaps you should learn to trust people with more experience
>sometimes :-)


The rules that I use in movei are based on attack information of squares near
the king.

only not having pawns near the king leads to only a small panelty and it is not
enough to convince movei not to play g5.

Uri



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