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Subject: Re: Ply Depth in relation to Elo again...

Author: Joshua Lee

Date: 09:41:24 05/23/00

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>>Deeper Blue  1997 (15at a minimum)17-18 Ply 2817(USCF)200 MNPS
2767 or 2717FIDE     I just want to know if these numbers were acurate and which
ones were not fix them if you knew the correct ratings. This way we can get an
idea of where PC's Lie compared to Deep Thought ...

Deeper Blue is twice as fast as Deep Blue obviously but what would the
equivalent processor speed have to be to match it? 2Thz like i said or no?
Deep Blue   1996 (14Ply Min 16-17 Ply  2642(FIDE?)100 MNps

looking at it now twice as fast netted Deeper Blue 1 ply
512???Ghz would be 50MNps  and (13Ply Minimum)15 Ply so
 2642-50= 2592or -60 =2582 or is it -90 =2552???
Here is where it get's tricky because we know Deeper Blue's rating , we Know
Deep Blue's rating so when we go to the Processing power that is 50% lower
going from 1024 to 512  we though that the rating is 50 or 60 or 90 points
I proved beyond a shadow of a doubt that this cannot be true in every case
because the ratings get junky down the list.


>This is a problem.  I personally believe that DB is on the order of 300 points
>better than the next best computer.  But this is in head-to-head play with
>computers.  Whether it is that much stronger if both programs were playing only
>humans is another issue.
>
>Computer vs computer exaggerates search speed and missing knowledge.  Against
>humans this isn't as important, overall...

Deep Blue is 2642 and looks 16-17 Ply (14 Ply minimum) 2642(FIDE
128Ghz  12.5Mnps   (11PlyMin)   13Ply   2492     2462             2372
Deep Thought II        1991                  6-7 Million Nps 64Ghz?
64Ghz    6.25Mnps      (10Ply)     12Ply    2442     2402            2282

Can't be because it would make the PC's even lower besides gary Kasparov was the
one who said that Deep Thought in 1989 was 2480-2500FIDE
300 points would make the rest of the list even lower if i knew the hardware
then that would make a difference. also I played over the 89 game and at 12Ply
in analysis it prefered 39.Kg1 to g3 -0.95 and gave Deep Thoughts move g3 as
-1.16.  ofcourse this took maybe 3 minutes on their hardware and took atleast an
hour on mine it says something about how strong the eval is in PC programs.

You said : doubling the cpu speed is generally said to produce 50-60 rating
points.Since the typical effective branching factor is around 3.0, every time
the speed is tripled, we get another ply, and using the 60 point figure above,
a ply would be about 90 rating points, roughly.  But there is nothing that
says that as we go deeper this doesn't taper off.  Nor is there anything that
says that as we go deeper, the gain doesn't actually get larger...

Keeping your  last two sentences in mind...


                                         -50    -60          -90
2.048Thz 200 Mnps 15Ply Min  17Ply     2692     2702         2732 <---??

Deeper Blue                1997   (15at a minimum)17-18 Ply  2817 (USCF)
 200 MNPS 2.048Thz  2817USCF -50 or -100   2767 or 2717FIDE
Deep Blue                    1996             16-17 Ply (*)14 Ply 2642(FIDE
(*2535 Positional Play Strength?) 100 MNps 1.024Thz?? 32node *6 =192 processors
1.024Thz 100 Mnps 14PlyMin   16Ply     2642     2642            2642
512Ghz  50Mnps   13Ply Min       15Ply   2592       2582           2552
256Ghz  25Mnps    (12Ply Min)    14Ply  2542      2522            2462
128Ghz  12.5Mnps   (11PlyMin)   13Ply   2492     2462             2372
Deep Thought II        1991                  6-7 Million Nps 64Ghz?

64Ghz    6.25Mnps      (10Ply)     12Ply    2442     2402            2282
32Ghz   3.125Mnps    (9Ply)        11Ply     2392    2342             2192
Deep Thought            1989                2480-2500 (FIDE) 2 Mnps 20Ghz?*
16Ghz  1.562.500nps    (8)           10Ply   2342     2282             2102
8Ghz     781,250nps       (7)         9Ply     2292      2222             2012
Deep Thought 0.02    1988     2551(USCF) 2501 or  2451(FIDE?)750KNps* 7.453Ghz
In 1988 DEEP THOUGHT and Grandmaster Tony Miles shared first place in the U.S.
Open championship. DEEP THOUGHT had a 2745 performance rating. 2745-180 = 2565?
don't you subtract 180 to get a true rating from a performance one?
4Ghz     390,625nps      (6)          8Ply      2242    2162              1922
Hitech       1995              200KNps
2Ghz    195,312nps         (5)           7Ply      2192    2102
1832
Hitech                          1988 2413(USCF) 2363 or 2313FIDE?   175 KNps
In 1985 HITECH achieved a performace rating of 2530.  2530-180 = 2350
Belle                             1983 2208         160KNps
1Ghz    97,656nps           (4)            6Ply     2142    2042 1742
Hiarcs 7.32                  2000           98-134KNps  1Ghz
Hiarcs 7.32                  2000 2660(LCTII)2460(FIDE est)87-123KNps 880AMD
Belle                             1983 2208         160KNps

 Hiarcs looks at a Minimum of 7 usually 8 but on average 9 or 10 sometimes 11Ply
in the middlegame on my computer which is 880Athlon

I swear i read that Deep Thought searched 12Ply in 1989 against Kasparov
I don't know if this is so and my other thought is how much of a difference does
the extensions Hiarcs gives in a position i.e if it say's that it is looking
9/30ply
how does that compare with Deep Blue saying it is looking 16Ply?
anotherwords in the same position is 16 Hiarcs ply the same as 16 Deep Blue ply
maybe that is the key to the differences in the list above.
thankyou



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