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Subject: Re: Dutch Open CCC Leiden(6)

Author: Richard Pijl

Date: 13:38:08 10/18/04

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On October 18, 2004 at 12:07:25, Will Singleton wrote:

>On October 18, 2004 at 03:09:43, Richard Pijl wrote:
>
>>>
>>>I feel really shredderd now. The marshall against The Baron gave me the rest
>>>today, after yesterdays highlights from IsiChess agains Deep Sjeng (16.Kf1
>>>18.Kg1) and Nexus, where IsiChess was totally without any clue, got out-searched
>>>as well as out-evaluated. Very impressed by Nexus knowledge about pawn-levers on
>>>the attacking side. Very impressed also about Nexus 27.Sxc6, while IsiChess
>>>pondered on Nxg4. It seems 27.b5 wins too. What is your best move here?
>>>
>>>[D]1k2qb1r/1bp1r1p1/p1p5/2PpN2p/PP1B2n1/2Q3PB/7P/1R3RK1 w - -
>>
>>The Baron (Xeon 2.8) plays Nxc6 in just over a minute.
>>
>> ply       time        nodes   score  pv
>>  4( 6)&   0:00.06     10411   +0.25  Rb1-e1 Ng4xe5 Bd4xe5 h5-h4 Rf1-f2
>>  4( 7)+   0:00.08     12036   +0.53  Ne5xg4 (h5xg4) (Bh3xg4) (Rh8-h6) (Qc3-d2)
>>  4(10)&   0:00.08     13820   +0.59  Ne5xg4 h5xg4 Bh3xg4 Rh8-h6 Qc3-d2
>>                                      Re7-e4
>>  4(10).   0:00.11     19965   +0.59  Ne5xg4 h5xg4 Bh3xg4 Rh8-h6 Qc3-d2
>>                                      Re7-e4
>>  5(11)&   0:00.13     23758   +0.59  Ne5xg4 h5xg4 Bh3xg4 Rh8-h6 Qc3-d2
>>                                      Re7-e4
>>  5(11).   0:00.14     32183   +0.59  Ne5xg4 h5xg4 Bh3xg4 Rh8-h6 Qc3-d2
>>                                      Re7-e4
>>  6(13)&   0:00.33     77182   +0.25  Rb1-e1 Ng4xe5 Bd4xe5 h5-h4 Rf1-f2
>>                                      h4xg3 (Qc3xg3)
>>  6(13).   0:00.42    104685   +0.25  Rb1-e1 Ng4xe5 Bd4xe5 h5-h4 Rf1-f2
>>                                      h4xg3 (Qc3xg3)
>>  7(15)&   0:00.56    142392   +0.19  Rb1-e1 Ng4xe5 Re1xe5 h5-h4 Re5xe7
>>                                      Qe8xe7 Bd4-e5 Qe7-g5
>>  7(15).   0:01.00    271905   +0.19  Rb1-e1 Ng4xe5 Re1xe5 h5-h4 Re5xe7
>>                                      Qe8xe7 Bd4-e5 Qe7-g5
>>  8(15)&   0:01.59    421503   +0.46  Rb1-e1 Ng4xe5 Bd4xe5 Rh8-g8 Qc3-e3
>>                                      g7-g5 Bh3-f5
>>  8(17).   0:02.50    697069   +0.46  Rb1-e1 Ng4xe5 Bd4xe5 Rh8-g8 Qc3-e3
>>                                      g7-g5 Bh3-f5
>>  9(17)&   0:04.00   1095145   +0.63  Rb1-e1 Ng4xe5 Bd4xe5 Rh8-g8 Qc3-e3
>>                                      g7-g5 Bh3-f5 g5-g4 Rf1-f4
>>  9(17)&   0:05.31   1475211   +0.69  Ne5xg4 h5xg4 Bh3xg4 Bb7-c8 Bg4xc8
>>                                      Kb8xc8 Qc3-d3 Kc8-d8 Qd3xa6 Re7-e6
>>  9(17).   0:05.89   1674949   +0.69  Ne5xg4 h5xg4 Bh3xg4 Bb7-c8 Bg4xc8
>>                                      Kb8xc8 Qc3-d3 Kc8-d8 Qd3xa6 Re7-e6
>> 10(20)&   0:07.44   2131770   +0.77  Ne5xg4 h5xg4 Bh3xg4 Qe8-g6 Bg4-f5
>>                                      Qg6-h5 Rf1-f2 Re7-e2 Rb1-b2 Re2xf2 Rb2xf2
>>                                      (Qh5-d1)
>> 10(20).   0:09.88   2900930   +0.77  Ne5xg4 h5xg4 Bh3xg4 Qe8-g6 Bg4-f5
>>                                      Qg6-h5 Rf1-f2 Re7-e2 Rb1-b2 Re2xf2 Rb2xf2
>>                                      (Qh5-d1)
>> 11(18)&   0:12.50   3710417   +0.76  Ne5xg4 h5xg4 Bh3xg4 Re7-e4 Bg4-f3
>>                                      Re4-e7 Rb1-e1 Re7xe1 Qc3xe1 Qe8-g6 Qe1-e5
>>                                      Qg6-d3
>> 11(18).   0:19.98   5926779   +0.76  Ne5xg4 h5xg4 Bh3xg4 Re7-e4 Bg4-f3
>>                                      Re4-e7 Rb1-e1 Re7xe1 Qc3xe1 Qe8-g6 Qe1-e5
>>                                      Qg6-d3
>> 12(21)&   0:27.00   7945718   +0.80  Ne5xg4 h5xg4 Bh3xg4 Re7-e4 Bg4-f3
>>                                      Re4-e7 Qc3-d2 Re7-f7 Bf3-g4 Bf8-e7 Rf1-f4
>>                                      Kb8-a8
>> 12(23)&   1:08.83  18517118   +0.85  Ne5xc6 Qe8xc6 b4-b5 a6xb5 a4xb5
>>                                      Qc6-e6 c5-c6 Qe6-e2 Rb1-b2 Qe2-c4 Qc3xc4
>>                                      d5xc4 c6xb7 Re7-e4
>> 12(23).   1:13.53  20054752   +0.85  Ne5xc6 Qe8xc6 b4-b5 a6xb5 a4xb5
>>                                      Qc6-e6 c5-c6 Qe6-e2 Rb1-b2 Qe2-c4 Qc3xc4
>>                                      d5xc4 c6xb7 Re7-e4
>> 13(24)+   2:20.31  36736414   +1.20  Ne5xc6 (Qe8xc6) (b4-b5) (a6xb5) (a4xb5)
>>                                      (Qc6-e6) (c5-c6) (Qe6-e2) (Bh3-g2)
>>(Ng4-e3) (Bg2-f3)
>>                                      (Qe2-c4) (Qc3-a1)
>> 13(25)&   2:52.61  45755678   +1.21  Ne5xc6 Qe8xc6 b4-b5 a6xb5 a4xb5
>>                                      Qc6-e6 c5-c6 Qe6-e2 Bh3-g2 Ng4-e3 Bg2-f3
>>                                      Ne3xf1 Bf3xe2 Re7xe2 c6xb7 (Nf1xh2)
>
>
>That's very impressive.  I tried several programs, including Shredder, CM9000,
>Ruffian, none found it.  What do you think is the key here?

I don't know. Funny thing is that I 'improved' the Baron this evening, removing
some stuff that should not matter in this position, and adding some other stuff
that shouldn't matter either. Result: The score for Nxg4 increased a bit so Nxc6
is found one ply later ...

Richard



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