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Subject: Re: Why Tiger calls it Mate in 25?

Author: Chessfun

Date: 20:34:48 04/19/01

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On April 19, 2001 at 21:00:50, Jeff Lischer wrote:

>On April 19, 2001 at 10:23:47, Robert Hyatt wrote:
>
>>
>>Somebody's confused somewhere.  It is a mate in 26 starting with Ne4.  IE
>>counting Ne4, white needs exactly 26 moves to force mate.  What's with all
>>the other numbers these programs are getting???
>
>I did some experimenting Tiger and it seems that Tiger rounds down! If the mate
>is in 1 ply (or 0.5 moves) Tiger calls it Mate in 0. Tiger calls mate in 2 plies
>(1.0 moves) Mate in 1. And so on. Since the position above is mate in 51 plies
>(25.5 moves), Tiger calls it Mate in 25. :)
>
>I don't know about the other programs.

You are correct Christophe has written on this here before.
As for the others programs no idea why they had different #s to mate.
I have all 3,4 and 5 men bases in one directory 7.05 GB.
All programs ran for about one minute.

Sarah.




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