Author: Bernhard Bauer
Date: 05:50:07 04/27/99
Go up one level in this thread
On April 27, 1999 at 08:22:21, Harald Faber wrote:
>On April 27, 1999 at 08:00:18, Bernhard Bauer wrote:
>
>>>Again, now the correct position where Crafty and Fritz only see Be5 as best move
>>>while Be7 easily wins:
>>>
>>>qnb5/1p1k1K2/pPp2B2/P1p5/2P5/8/8/8 b - -
>>
>>May be I'm sitting on the wire. -:)
>>The above FEN position looks as follows:
>>
>>
>> +---+---+---+---+---+---+---+---+
>> 8 | *Q| *N| *B| | | | | |
>> +---+---+---+---+---+---+---+---+
>> 7 | | *P| | *K| B | K | | |
>> +---+---+---+---+---+---+---+---+
>> 6 | *P| P | *P| | | | | |
>> +---+---+---+---+---+---+---+---+
>> 5 | P | | *P| | | | | |
>> +---+---+---+---+---+---+---+---+
>> 4 | | | P | | | | | |
>> +---+---+---+---+---+---+---+---+
>> 3 | | | | | | | | |
>> +---+---+---+---+---+---+---+---+
>> 2 | | | | | | | | |
>> +---+---+---+---+---+---+---+---+
>> 1 | | | | | | | | |
>> +---+---+---+---+---+---+---+---+
>> a b c d e f g h
>>
>>How can a black bishop move to e5 or e7 in this position?
>>I see only one black bishob on c8. This bishop can not move anywhere.
>>Can you enlighten me please?
>>
>>Kind regards
>>Bernhard
>
>Argh! Amazing what can go wrong...put the WHITE BISHOP back to f6 and then WHITE
>TO MOVE. Now Be7 wins while Crafty and Fritz, well, you know what...
Now it's reasonable. Crafty without null move finds a mate in 6 imediatly.
starting thread 1
6-> 0.09 5.86 1. Be7 Qa7 2. bxa7 Kc7 3. Bd6+ Kxd6
4. axb8=Q+ Kd7 5. Qe5 Kd8 6. Qxc5
7 0.11 ++ 1. Be7!!
7 0.14 Mat06 1. Be7 Qa7 2. bxa7 Kc7 3. Bd6+ Kxd6
4. axb8=Q+ Kd7 5. Qe5 Kd8 6. Qe7#
7-> 0.24 Mat06 1. Be7 Qa7 2. bxa7 Kc7 3. Bd6+ Kxd6
4. axb8=Q+ Kd7 5. Qe5 Kd8 6. Qe7#
time=0.24 cpu=813% mat=-14 n=42309 fh=97% nps=183952
ext-> checks=2811 recaps=73 pawns=795 1rep=297 thrt:0
predicted=0 nodes=42309 evals=528
endgame tablebase-> probes done=0 successful=0
SMP-> split=220 stop=16 data=5/64 cpu=1.87 elap=0.23
mate in 6 moves.
Here I'd like to add another studie from A. Troitzky
FEN: 4B3/8/6N1/5p2/1r4p1/6pk/7b/4K2Q w
Try your favorite chess game.
Crafty will need some hours -:)
Kind regards
Bernhard
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