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Subject: Re: A good test position for program.

Author: Peter Fendrich

Date: 14:03:54 12/04/99

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On December 04, 1999 at 16:16:25, Côme wrote:

>On December 04, 1999 at 15:43:53, Peter Fendrich wrote:
>
>>On December 04, 1999 at 15:01:57, Côme wrote:
>>
>>>Hello,
>>>In this position:
>>>8/prr2p1p/2R5/PP2pP2/3pRbPk/2pB3P/2P3K1/8 w - - 0 1
>>>Does your program play the strong Rxf4! ?
>>>Best Regards
>>>Alexandre Côme
>>yes, allmost instantly but is it for the right reason?
>>
>> 4        1     17    4379 a6 Rxc6 bxc6 Rc7 Bb5
>> 4        1     18    7343 Rxc7  (Rb7c7  b5b6  a7b6  a5b6 Kh4g5  b6c7)
>> 4        1     35    9148 Rxc7 Rxc7 b6 Re7 f6 Rd7 Rxf4
>> 4        1     36   10744 Rd6  (Kh4g5  b5b6  a7b6  a5b6)
>> 4        1     38   14522 Rd6 Rd7 a6 Rc7
>> 4        1     39   16951 Rxf4  (Rc7c6  b5c6  e5f4  c6b7)
>> 4        1     66   17547 Rxf4 exf4 Rh6 Kg5 Rh5  (Kg5f6)
>> 5        1     69   22160 Rxf4 exf4 Rh6 Kg5 Rh5 Kf6 Rxh7
>> 6        2     69   52827 Rxf4  ( e5f4 Rc6h6 Kh4g5 Rh6h7 Kg5f6  a5a6)
>> 6        2    111   57685 Rxf4 exf4 Rh6 Kg5 Rxh7 Rc5 a6
>> 7        2    119   99043 Rxf4 exf4 Rh6 Kg5 Rh5 Kf6 a6 Rb6 Rxh7
>> 8        4     97  196024 Rxf4 exf4 Rh6 Kg5 Rxh7 Rc5 a6 Re7 Kh1
>> 9        7     92  500606 Rxf4 exf4 Rh6 Kg5 Rxh7 Rc5 a6 Re7 Rh5 Kf6 Rh7
>>10       46     87 2757877 Rxf4 exf4 Rh6 Kg5 Rxh7 Rb8 a6 Re8 Kf1 Re3 Be2
>>11       91     86 5567097 Rxf4 exf4 Rh6 Kg5 Rh5 Kf6 g5 Kg7 f6 Kh8 Rxh7 Kg8
>>                           a6 Rb6 Rg7 Kh8 Kh1
>>//Peter
>
>Hello Peter,
>Who is this program?
>Try with commercial programs you will may be have some surprises!
>Best Regards
>Alexandre Côme

It's my program Terra.
I tried Hiarcs for a minute and it didn't like Rxf4.
CM6000 had no problems to find it.
Crafty 16.10 found it at iteration 11.
From where is the position?
//Peter




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