[Retros] Retros Digest, Vol 146, Issue 1

[Dominique Forlot]

Hi ! Eric , I have to make a rectification for my previous e-mail.


You must read 

« a mat(0,7,17) [ speed 3.46255/ply ] »


And not a mat(0,8,17) which is only check, not matt ! ) 


Sorry for this confusion ! It’s sound !


The speed is calculated by :

V = (7xsqr(2)+17xsqr(5) )/13

13 is the number of plies ( 6.5 moves for the matt )

cordially

Dominique Forlot







> Message du 01/09/16 07:42
> De : retros-request at janko.at
> A : retros at janko.at
> Copie à : 
> Objet : Retros Digest, Vol 146, Issue 1
> 
> > play a race
> 
> ... indeed!
> 
> > This has length of 8+27*SQRT2 = 46.18 
> > which beats 19+10*SQRT2+4*SQRT5 = 42.09
> 
> ... waow, thanks Yoav!
> Best,
> É.
> 
> 
> 
> -----Message d'origine-----
> De : Retros [mailto:retros-bounces at janko.at] 
> De la part de Yoav Ben-Zvi
> Envoyé : mercredi 31 août 2016 10:59
> À : Retro List 
> Objet : [Retros] FW: FW: Distance-PG
> 
> 
> Verification must wait for a full search of all sound SPGs in 6.0. 
> Meanwhile humans can play a race with the computer by finding better
> candidates such as:
> 
> Natch 3.0.beta
> Copyright (C) 1997,98,99,2001-2005,2016 Pascal Wassong
> 
> +---+---+---+---+---+---+---+---+
> | |*S | | . |*K | . |*S |*R |
> +---+---+---+---+---+---+---+---+
> |*P | | . |*P | . |*P |*P |*P |
> +---+---+---+---+---+---+---+---+
> | | . | | . | | . | | . |
> +---+---+---+---+---+---+---+---+
> | . | |*P | |*P | | . | |
> +---+---+---+---+---+---+---+---+
> | | . | | . | | P | P |*Q |
> +---+---+---+---+---+---+---+---+
> |*B | | . | | . | B | . | |
> +---+---+---+---+---+---+---+---+
> | P | P | P | P | P | . |*B | P |
> +---+---+---+---+---+---+---+---+
> | R | S | B | Q | K | | S | R |
> +---+---+---+---+---+---+---+---+
> 1s2k1sr/p2p1ppp/8/2p1p3/5PPq/b4B2/PPPPP1bP/RSBQK1SR
> 12 single moves. 16 + 14
> 
> The resolution begins at Wed Aug 31 10:55:55 2016
> 
> Solution 1 (position 1)
> 1.Pg2-g4 Pe7-e5 2.Bf1-g2 Bf8-a3 3.Bg2xb7 Pc7-c5 
> 4.Bb7xa8 Bc8-b7 5.Pf2-f4 Bb7-g2 6.Ba8-f3 Qd8-h4 
> 
> The resolution ends at Wed Aug 31 10:55:55 2016 
> Solution found: 1 Position analysed: 1 Resolution time: 0.08 s. 
> 
> This has length of 8+27*SQRT2 = 46.18 
> which beats 19+10*SQRT2+4*SQRT5 = 42.09
> 
> Yoav
> 
>
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