Author: Graham Laight
Date: 15:19:36 07/11/00
Go up one level in this thread
On July 11, 2000 at 15:12:00, Robert Hyatt wrote:
>On July 11, 2000 at 11:08:27, Mark Young wrote:
>
>>On July 11, 2000 at 08:53:30, Robert Hyatt wrote:
>>
>>>On July 11, 2000 at 08:20:36, blass uri wrote:
>>>
>>>>[D]2r2rk1/4ppb1/1p2n3/4P1B1/1p6/5P2/PPP1BP2/R3K2R w KQ - 0 1
>>>>
>>>>Crafty found 22.Be3 in 24 seconds(PIII450)
>>>>How much time do other programs need to see Be3?
>>>>
>>>>Uri
>>
>>Crafty seems to have a very good understanding of this position, when most of
>>the other programs do not. Is this because you have seen this type of opposite
>>color bishop ending ("trap") before playing so many humans online and have taken
>>steps in your program to counter it.
>>
>>>
>>>
>>>Or maybe even faster: :)
>>>
>>> (3) 10 2.15 1.74 1. Bxe7 Rfe8 2. Bxb4 Nd4 3. Bd1 Nxc2+
>>> 4. Bxc2 Rxc2 5. f4 f6 6. Kd1 Rxb2
>>> 10 6.28 2.01 1. Be3 Rxc2 2. Bd3 Rxb2 3. Bh7+ Kh8
>>> 4. f4 b3 5. Bc1 Rxa2 6. Bb1+ Kg8 7.
>>> Bxa2 bxa2 8. Rxa2
>>> 10-> 6.78 2.01 1. Be3 Rxc2 2. Bd3 Rxb2 3. Bh7+ Kh8
>>> 4. f4 b3 5. Bc1 Rxa2 6. Bb1+ Kg8 7.
>>> Bxa2 bxa2 8. Rxa2
>>> 11 8.63 2.01 1. Be3 Rxc2 2. Bd3 Rxb2 3. Bh7+ Kh8
>>> 4. f4 b3 5. Bc1 Rxa2 6. Bb1+ Kg8 7.
>>> Bxa2 bxa2 8. Rxa2
>>> (2) 11-> 11.63 2.01 1. Be3 Rxc2 2. Bd3 Rxb2 3. Bh7+ Kh8
>>> 4. f4 b3 5. Bc1 Rxa2 6. Bb1+ Kg8 7.
>>> Bxa2 bxa2 8. Rxa2
>
>
>Hard to say. I definitely have code for opposite bishop positions, and I have
>seen crafty play such positions with some degree of 'sense'. But it is hard to
>say whether that is "the reason" here... I will look tonight to get an idea of
>what it is seeing/avoiding...
>
>In any case, humans exploit such holes all the time if you don't "fill them".
If the loss of 0.5 points against Khalifman was avoidable by trying to manouvre
away from an opposite colour bishop ending, then I think that the Junior
programmers, while still proud to have gained such an advantage over the FIDE
world champion, will be kicking themselves for ultimately letting him off the
hook so lightly!
-g
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