Computer Chess Club Archives




Subject: Re: What approach do you use to handle castling/en passant for repetition?

Author: Tom Kerrigan

Date: 08:37:22 02/29/00

Go up one level in this thread

On February 29, 2000 at 11:34:53, Tom Kerrigan wrote:

>On February 28, 2000 at 16:53:45, Robert Hyatt wrote:
>>How about if I tell you that if you compute x=a/b where b=0 you are going
>>to have problems?  Do you need confirmation of the problem?  Or if you are
>I would appreciate it if you didn't trivialize the issue.
>I asked you to back up your argument and you gave me some random numbers. Now
>you are asking me if I need confirmation that divide-by-zero is bad. It's no
>secret that you are being extremely insulting to me.
>I don't understand why you would be so aggressive/insulting/defensive (?) unless
>you can't back up your point. Here is a direct quote from you:
>>All you have to do is run with and without EP hashed into your signature to
>>see the problem.  I lost a game early in the crafty development due to this.
>If it's so easy to prove your point ("All you have to do...") then why don't you
>just comment out a few lines of code, run a little test, and post the results?
>I suspect the reason you are being insulting is because it's extremely difficult
>to prove your point with actual data. So Crafty lost 1 game in n thousand due to
>this "bug." That doesn't tell me that it's the severe problem that you imply.
>The reason I want actual data is because my own program does not hash EP
>squares. So far, I have not seen one single program that can be attributed to

program = problem, of course


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