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Subject: Re: 50 moves rule

Author: Dieter Buerssner

Date: 16:05:35 12/17/00

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On December 17, 2000 at 17:17:40, guy haworth wrote:

>Crafty 17.13 defends the draw until its move 149, Kb4, steps into a loss -
>perhaps in an effort to avoid repeating the position with the one drawing move
>Kc6.

Yes. To check this, I just downloaded KQBKQ tables. For 149. Kb4 Crafty had
shown -4.6 (about the same as for the 45 last moves). For its 150th move,
Crafty had shown -Mat10, for its 151st move -12.36 and for its 152nd move
0.0 (after which black still can mate).

>After that DTC- and DTM-optimal play mate on Black's move 155 which does indeed
>wrap up the game for a win with exactly 100 plies in the last phase.
>
>Was either side playing with the DTC- and/or DTM EGTs?

Both engines had acces to all 4-men tables (distance to mate).

Regards,
Dieter



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