Author: Jeremiah Penery
Date: 23:04:27 11/08/98
Go up one level in this thread
On November 07, 1998 at 15:18:26, James Robertson wrote:
>On November 07, 1998 at 01:14:10, blass uri wrote:
>
>>
>>On November 06, 1998 at 20:07:39, James Robertson wrote:
>>
>>>On November 06, 1998 at 14:31:41, blass uri wrote:
>>>
>>>>
>>>>On November 06, 1998 at 13:47:22, blass uri wrote:
>>>>
>>>>>
>>>>>On November 06, 1998 at 01:43:43, Jeremiah Penery wrote:
>>>>>
>>>>>>On November 06, 1998 at 00:26:37, James Robertson wrote:
>>>>>>
>>>>>>>The following position was reachied in a blitz game between Exchess 2.49 and
>>>>>>>SSEChess 2.01:
>>>>>>>
>>>>>>>4rrk1/ppp2pp1/2qp3p/2n5/2P1PQ1B/3P4/P1P3PP/R4RK1 w - -
>>>>>>>
>>>>>>>Exchess played Qf2 and won about 30 moves later, but I thought that maybe Bf6
>>>>>>>would be an irresistible sacrifice for a computer program.
>>>>>>>
>>>>>>>After 1. Bf6 gxf6 2. Qxh6, I don't see any way Black can win:
>>>>>>>
>>>>>>>2. ... Nd5 3. Rf3 Ng5 4. Rg3 d5 5. h4 Qd6 6. Kh2 Qe5 7. hxg6 fxg6 8. Qxg6+ Qxg6
>>>>>>>9. Rxg6+ Kh7 10. cxd5 (evaluated -2.15 for Black by Crafty)
>>>>>>>
>>>>>>>2. ... Nd7 3. Rf3 (And Black can't stop Rg3)
>>>>>>
>>>>>>I ran Crafty on it. Here's what I got after 1.Bf6 gxf6 2.Qxh6:
>>>>>>
>>>>>>2. ... Ne6 3. Rab1 Qc5+ 4. Rf2 Nd4 5. Rxb7 Rb8 6. Rxb8 Rxb8 7. g4 Qg5 8. Qh3
>>>>>>Rb1+ 9. Kg2 Rb2 (Eval: -1.6 for white)
>>>>>
>>>>>3.Rab1 is not good and Junior5 prefered 3.Rf3 with the idea to play after
>>>>>3...Ng5 4.Kh1
>>>>
>>>>Junior5 prefer after some minutes 4.Rf4 and white is winning
>>>>I think that 2...Ne6 is a losing mistake for black
>>>
>>>I can't think of any other move for Black other than 2. ... Ne6. Is there a
>>>better move?
>>>
>>>James
>>
>>
>>2...Nxe4(Junior5's move) is better and after it 3.dxe4 Qc5+ Kh1 Qg5 is one
>>option.
>>
>>Uri
>
>Ok..... That makes sense. White is left with destroyed pawns, and his attack is
>over.
>
>James
Last couple plies run from Crafty
16-> 1331:21 0.45 2. ... Nxe4 3. dxe4 Rxe4 4. Rxf6 Rg4
5. Rf2 Qxc4 6. Qe3 a6 7. c3 d5 8. Re1
Re4 9. Qg5+ Kh7 10. Ref1 Qc5 11. Qh5+
Kg7 12. Qg5+ Kh8
17-> 3294:19 0.41 2. ... Nxe4 3. dxe4 Rxe4 4. Qxf6 Qc5+
5. Kh1 Qe5 6. Qf2 Rxc4 7. Rae1 Qg5
8. Re2 c5 9. Rb1 b5 10. Rbe1 Rf4 11.
Qe3
White is still winning, but not by a lot. I'll let it run some more, to see
what happens (if anything).
Jeremiah
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