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Subject: No mate in 18

Author: Olaf Jenkner

Date: 14:00:11 03/11/02

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On March 09, 2002 at 11:30:13, Olaf Jenkner wrote:

>>
>>My extrapolation is different
>>
>>No mate in 13 was proved in 22 minutes
>>No mate in 16 was proved in 4.5 hours that mean 270 minutes.
>>
>>270/22<13
>>
>>It means based on extrapolation that 270*13 minutes are enough to find mate in
>>at most 19 that is the shortest mate.
>>
>>The hardware was only pII333 (88Mbytes hash)
>>I believe that today there is hardware that is at least 4.5 times faster and on
>>this hardware 13 hours is going to be enough based on extrapolation.
>>
>>Uri
>
>I will let it run with 19 moves. Then we know it exactly.
>
>OJe

After  9.5 hours (PII 333MHz, 88 MB hash) Gustav says "no mate in 17".
After 21.5 hours (PII 333MHz, 88 MB hash) Gustav says "no mate in 18".

I give up.
At least after two days Gustav will find the solution with brute force.



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