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Subject: Re: Test position: Corzo-Capablanca

Author: Richard Pijl

Date: 03:54:24 10/31/04

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On October 31, 2004 at 03:44:38, Kurt Utzinger wrote:

>On October 31, 2004 at 02:55:12, Richard Pijl wrote:
>
>>On October 31, 2004 at 02:38:48, Kurt Utzinger wrote:
>>
>>>Corzo-Capablanca, Havana, m 1900 (8)
>>>To find is 13...Qb6!
>>>[D]r1b2bnr/ppp2k2/7p/2qP4/3Q1p1P/6p1/PPP1N1P1/R1B2BKR b - - 0 13
>
>>The Baron 1.5.0 on a P4-2.4:
>> 12(18)&   0:58.99  14556615   +0.48  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Qb6xd4
>>                                      Be3xd4 Bb4-d2 Ra1-d1 Bd2-e3 Bd4xe3 f4xe3
>>                                      Ne2xg3 Ng8-f6 Bf1-e2
>>Richard.
>
>
>      Hi Richard
>      The Baron 1.5.0 find the best move. But the main line
>      does not look convincing to me, in particular 15...Qxd4
>      seems bad and should be replaced by 15...Nf6 I think.
>      Please have a look at the line below.
>      Kurt
>
Below is the thinking of a slightly newer version of the Baron. Here the line at
the same depth is a little different. The Baron changes its mind at the depth of
12 now, and finds it again at depth 13. At that depth the Baron expects 15.c3
and then exchanges queens after all. Only at depth 14 the exchange is avoided
with 15..Bc5. From that moment on, the score is rising.
Richard.

 12(18)&   0:58.44  13814748   +0.44  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Bb4-d6
                                      Qd4xf4 Bd6xf4 Be3xb6 a7xb6 Ne2xf4 Ng8-f6
                                      Bf1-b5 (Ra8-a3)
 12(21)&   4:07.44  51553396   +0.45  Qc5xc2 Ne2-c3 Bc8-f5 Bc1xf4 Qc2xb2
                                      Ra1-e1 Bf8-b4 Re1-c1 Ng8-e7 Bf1-c4 Qb2-f2
                                      Qd4xf2 g3xf2 Kg1xf2 Bb4-c5
 12(21).   4:59.67  64404052   +0.45  Qc5xc2 Ne2-c3 Bc8-f5 Bc1xf4 Qc2xb2
                                      Ra1-e1 Bf8-b4 Re1-c1 Ng8-e7 Bf1-c4 Qb2-f2
                                      Qd4xf2 g3xf2 Kg1xf2 Bb4-c5
 13(22)&  11:32.28 143556395   +0.27  Qc5xc2 Qd4xf4 Ng8-f6 Qf4xg3 Rh8-g8
                                      Qg3-e5 Bf8-d6 Qe5-c3 Qc2xc3 b2xc3 Kf7-g7
                                      Ne2-d4 Nf6xd5 Bc1-d2
 13(22)&  12:17.92 154661053   +0.31  Qc5-b6 b2-b4 Qb6xb4 c2-c3 Qb4xd4
                                      c3xd4 Bf8-d6 Bc1xf4 Bd6xf4 Ne2xf4 Bc8-f5
                                      Ra1-c1 Ra8-c8 Bf1-b5
 13(24).  15:56.25 207204726   +0.31  Qc5-b6 b2-b4 Qb6xb4 c2-c3 Qb4xd4
                                      c3xd4 Bf8-d6 Bc1xf4 Bd6xf4 Ne2xf4 Bc8-f5
                                      Ra1-c1 Ra8-c8 Bf1-b5
 14(21)&  17:04.52 223511296   +0.56  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Bb4-c5
                                      Qd4xf4 Ng8-f6 Be3-d4 Bc8-g4 c2-c3 Bc5xd4
                                      Ne2xd4 Qb6-d6 Qf4xd6 c7xd6 Bf1-c4
 14(24).  24:09.92 323587720   +0.56  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Bb4-c5
                                      Qd4xf4 Ng8-f6 Be3-d4 Bc8-g4 c2-c3 Bc5xd4
                                      Ne2xd4 Qb6-d6 Qf4xd6 c7xd6 Bf1-c4
 15(23)&  26:23.78 356348023   +0.81  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Bb4-c5
                                      Qd4xf4 Ng8-f6 Be3xc5 Qb6xc5 Qf4-d4 Qc5xd4
                                      Ne2xd4 Nf6xd5 Bf1-c4 Rh8-d8
 15(26).  46:17.75 636706637   +0.81  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Bb4-c5
                                      Qd4xf4 Ng8-f6 Be3xc5 Qb6xc5 Qf4-d4 Qc5xd4
                                      Ne2xd4 Nf6xd5 Bf1-c4 Rh8-d8
 16(25)&  50:50.01 702120498   +0.81  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Bb4-c5
                                      Qd4xf4 Ng8-f6 Be3xc5 Qb6xc5 Qf4-d4 Qc5xd4
                                      Ne2xd4 Nf6xd5 Bf1-c4 Rh8-d8 Ra1-f1 Kf7-g7
                                      Rf1-f3 Bc8-g4 Rf3xg3 Nd5-e3
 16(27).  98:40.58 1365153544   +0.81  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Bb4-c5
                                      Qd4xf4 Ng8-f6 Be3xc5 Qb6xc5 Qf4-d4 Qc5xd4
                                      Ne2xd4 Nf6xd5 Bf1-c4 Rh8-d8 Ra1-f1 Kf7-g7
                                      Rf1-f3 Bc8-g4 Rf3xg3 Nd5-e3
 17(28)& 114:19.59 1587083485   +1.02  Qc5-b6 b2-b4 Bf8xb4 Bc1-e3 Bb4-c5
                                      Qd4xf4 Ng8-f6 Be3xc5 Qb6xc5 Qf4-d4 Qc5xd4
                                      Ne2xd4 Rh8-e8 Bf1-c4 Re8-e4 c2-c3 Kf7-g7
                                      Ra1-f1 Bc8-g4 Bc4-d3 Re4-e3

>
>[Event "40'/40+40'/40+40'"]
>[Site "MyTown"]
>[Date "1900.??.??"]
>[Round "8"]
>[White "Corzo y Principe, Jua"]
>[Black "Capablanca, Jose"]
>[Result "0-1"]
>[ECO "C25"]
>[SetUp "1"]
>[FEN "r1b2bnr/ppp2k2/7p/2qP4/3Q1p1P/6p1/PPP1N1P1/R1B2BKR b - - 0 13"]
>[PlyCount "8"]
>[TimeControl "40/2400:40/2400:2400"]
>
>13... Qb6 14. b4 Bxb4 15. Be3 Qxd4 {? The Baron 1.5.0} 16. Bxd4 Bd2 17. Nxf4 {
>and White has no longer problems} 0-1



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