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Subject: Re: ECM errata

Author: Don Dailey

Date: 13:48:14 01/21/98

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Amir,

Good,  I'll keep track of this stuff for everyone.  At some point soon
I'll post everything that's agreed upon and give anyone a chance
to contest/clarify the tough ones.  As Bruce mentioned at one
point, we have to be really careful about some of the difficult
ones.   The initial design goal will simply be to include everything
that has not been proven absolutely correct (1 or more moves clearly
best) and we can resolve the other issues we disagree on later.

I am going to set up a long run on several Alpha machines, about
1 hour per position to aid in our analysis.

- Don

P.S.  I like  your table and will use the same format for all
the problems with columns for all of us.



On January 21, 1998 at 10:01:25, Amir Ban wrote:

>On January 20, 1998 at 13:35:00, Don Dailey wrote:
>
>>It's probably simplest to POST on this board the EPD's we all agree
>>should be eliminated since they will be fairly small.  I will try
>>to get some time to compile the ones we are eliminating and post
>>them tonight.  If there is disagreement about which to throw out
>>we'll do it by approval voting and break ties in favor of keeping.
>>
>>
>>- Don
>
>
>Don,
>
>I ran the suite at 60 seconds to get myself a better starting point. I
>now have 647 right. 9 of those solved at 20 sec are now back to
>unsolved. These flakes are 390, 470, 475, 489, 597, 666, 702, 824, 826.
>
>I have 34 unsolved in the first 200. I'll list them as a review of work
>in progress.
>
>Legend: UNS - Key is correct, not solved
>        SID - Key is correct, found side solution
>        COR - Key is wrong or insufficient, found right solution
>        BAD - Key is wrong, and there's no solution
>         ?  - Awaiting forum's verdict
>
>No.    Key      My move   my score   category
>=============================================
> 11    Nxg4      Bb5        126        UNS
> 17    Rxd5      Nf6        161        SID
> 19    Rxf6+     Nxe6       638        COR
> 24    Rxf4      Qe3        -92         ?
> 29    Rgxg6     Rxa6       227        SID (also Rf4)
> 43    Bxg2+     Qxc2       224        SID
> 51    Rxh2      Qc5         99         ?
> 60    Bxh2+     Qh6        260        COR
> 63    Ncxd5     Nbxd5      183        SID
> 68    Bd3       Ne4       -123        BAD
> 71    Qh6       Kg2        565        COR
> 76    fxg6      fxe6       465        SID
> 81    Qb1+      Bxc6       130        SID
> 84    Bg6       cxb5       159         ?
> 96    Qe8+      Nf6        Mate       SID
>115    Nxh7      0-0         63        UNS
>117    Ne7+      Ra7        351        COR
>123    Nxd6      Bxe5       146        COR
>130    Rxe7      f4          64        UNS
>131    c5        g4          48        SID
>137    c6        Rc3        224        COR (also Qe2)
>142    d3+       Rg8         -9         ?
>145    Bd4+      Rf2        447        COR
>148    Rfc8      Nxf4         0         ?
>153    Qd8       Qd6        855        SID
>155    Ra8       Rb8        142        UNS
>162    Rd7+      Rb8        213        SID
>180    Bd4       Bc4        223        COR
>186    Nxh6      Qe8        322        SID
>187    Nxe7      Nxf6        44        UNS
>190    Nd7       Ne7        121        COR
>191    Bd3       Qd4        336        SID
>193    Nb6       Qh3        -58        UNS
>198    Ba6       Nc5        351        COR
>==============================================
>
>Amir



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