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Subject: Re: One mate to solve.

Author: leonid

Date: 09:42:52 09/29/01

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On September 29, 2001 at 12:04:46, Paul wrote:

>On September 29, 2001 at 10:57:46, leonid wrote:
>
>>On September 29, 2001 at 09:46:10, Paul wrote:
>>
>>>On September 29, 2001 at 07:33:59, leonid wrote:
>>>
>>>>Hello!
>>>>
>>>>This mate is probably very easy. There are good chance that you will solve it
>>>>even by brute force wihtout too much waiting.
>>>>
>>>>[D]RQ2rqbb/4p2k/1KQQqQ1n/1R2qqpq/1P3P2/1BBPNN2/nq6/rq4QQ w - -
>>>>
>>>>Please indicate your result.
>>>>
>>>>Thanks,
>>>>Leonid.
>>>
>>>Hi again, leonid ...
>>
>>Hi, Paul!
>>
>>>This one is indeed easier than the last one, my program finds a mate in 10 for
>>>white in 14 seconds (p3/1GHz):
>>
>>This position is indicated as mate in 11. Probably your put some slightly
>>different position from the Web. I did this mistake already few times.
>
>No I tried the correct position, it's my hash bug showing up again, I tried it
>without hash and got this:

It is good that you found from where it come. To be sincere, I thought even to
find my old version to see if somehow it was not mistake in my last change.
Everything is possible. I remember few bugs that were found only few years
after coming into my code.


>05:01 WM11 11 Nxg5+ Qfxg5 Qce4+ Nf5 Qxh5+ Qxh5 Qexf5+ Qhxf5 Qh4+ Qh5 Qxh5+ Qxh5
>Rxh5+ Qfh6 Rxh6+ Kxh6 Qg5+ Kh7 Qh5+ Qh6 Qdxh6#
>
>Don't look at the time, the job ran in the background ... so that means back to
>the drawing board for me.
>
>>Your time is good. Position is much easier that previous one, even if it is two
>>moves deeper.
>>
>>Mine found mate in 11 in 6 sec. Position was verified by brute force as mate in
>>11.
>>
>>
>>>00:14 WM10 10 Nxg5+ Qfxg5 Qce4+ Nf5 Qxh5+ Qxh5 Qexf5+ Qhxf5 Qh4+ Qfh6 Qxg8+ Kxg8
>>>Qxe8+ Qff8 Qxf8+ Qxf8 Qxe6+ Qxe6+ Bxe6#
>>>
>>>And with black to move:
>>
>>Your are correct and found it instantly. I not indicated mate for blacks as too
>>simple.
>>
>>
>>>00:00 BM5 05 Qxb5+ Qxb5 Rxb8+ Ka7 Rxa8+ Kb7 Qxb5+ Qb6 Qbxb6#
>>>
>>>Dobriy vetcher,
>>
>>Here, Paul, it is still "den" (day).
>
>Wow ... 2 mistakes in one post ... well, it could have been worse I guess. :)

The last one probably not a mistake since you are in Europe where is the
evening.


>>Dobriy den, Paul! (Good day, Paul!)
>>
>>Leonid.
>
>Buona sera ;), Leonid! See you again next year, after I've finally caught this
>bug of mine ... hmmm, wonder if I could hire Heiner for that. :)

You start speaking to me in Italian (buena sera). Never mind. Before coming to
Canada I was in Italy and liked it very much. It is the place where for the
first time in my life I worked as interpreter (Russian-Italian) in one refugee
agency.

Make him (Heiner) move more quickly. I also wait for his next graphics oriented
version. It is the best possible reference mate solving program that I could
dream about.

Leonid.

>Paul



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