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Subject: Re: A difficult position: only Rybka finds the solution...

Author: Richard Pijl

Date: 01:32:56 12/16/05

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>the Baron 1.7.1 beta 4 on a Xeon 2.8 Ghz (single CPU) finds it in just 3
>minutes:
>
> ply       time        nodes   score  pv
>  6(12)&   0:01.19    267863   +0.72  Qb2-e5 Qc7xe5 f4xe5 h7-h6 g3-g4
>                                      Bf5xg4 (Ng5xf7)
>  6(12).   0:01.30    294224   +0.72  Qb2-e5 Qc7xe5 f4xe5 h7-h6 g3-g4
>                                      Bf5xg4 (Ng5xf7)
>  7(14)&   0:01.45    331504   +0.87  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 g3-g4
>                                      Bf5xg4 Bg2xc6
>  7(14).   0:02.59    596764   +0.87  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 g3-g4
>                                      Bf5xg4 Bg2xc6
>  8(13)&   0:03.11    715171   +0.87  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 g3-g4
>                                      Bf5xg4 Bg2xc6 b7xc6 (Rf1xf7)
>  8(14).   0:04.48   1038641   +0.87  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 g3-g4
>                                      Bf5xg4 Bg2xc6 b7xc6 (Rf1xf7)
>  9(13)&   0:05.59   1310925   +0.73  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 g3-g4
>                                      Bf5xg4 Bg2xc6 b7xc6 Rf1xf7 (h7-h6)
>  9(14).   0:14.44   3344746   +0.73  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 g3-g4
>                                      Bf5xg4 Bg2xc6 b7xc6 Rf1xf7 (h7-h6)
> 10(15)&   0:16.86   3949156   +0.78  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 Bg2-d5
>                                      Re8-d8 Bd5xf7 Kg8-h8 Rc1-c4 Nc6xe5 Rc4-h4
>                                      (h7-h5)
> 10(17).   0:30.31   6858671   +0.78  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 Bg2-d5
>                                      Re8-d8 Bd5xf7 Kg8-h8 Rc1-c4 Nc6xe5 Rc4-h4
>                                      (h7-h5)
> 11(16)&   0:42.41   9766539   +0.60  Qb2-e5 Qc7xe5 f4xe5 Ra8-b8 h2-h3
>                                      h7-h6 g3-g4 Bf5-d3 Rf1-f3 Bd3-c4 e5-e6
>                                      (h6xg5) (Rc1xc4)
> 11(18).   1:42.86  23655923   +0.60  Qb2-e5 Qc7xe5 f4xe5 Ra8-b8 h2-h3
>                                      h7-h6 g3-g4 Bf5-d3 Rf1-f3 Bd3-c4 e5-e6
> 12(19)&   2:04.89  28996155   +0.74  Qb2-e5 Qc7xe5 f4xe5 Na7-c6 Bg2-d5
>                                      e7-e6 Bd5xc6 b7xc6 g3-g4 Bf5xg4 Rf1xf7
>                                      h7-h6 (Rf7-f4)
> 12(19)&   2:59.40  40295255   +0.76  g3-g4 Bf5-d3 Rf1-f3 Ra8-d8 b3-b4
>                                      a5-a4 Qb2-e5 Na7-b5 Qe5xc7 Nb5xc7 Rf3xd3
>                                      Rd8xd3 (Bg2xb7)
> 12(20).   3:48.01  50882577   +0.76  g3-g4 Bf5-d3 Rf1-f3 Ra8-d8 b3-b4
>                                      a5-a4 Qb2-e5 Na7-b5 Qe5xc7 Nb5xc7 Rf3xd3
>                                      Rd8xd3 (Bg2xb7)
> 13(22)+   6:34.07  83312030   +1.11  g3-g4 (Bf5-d3) (Rf1-f3) (Ra8-d8) (f4-f5)
>                                      (g6xf5) (g4xf5)
> 13(23)&  10:45.29 131662800   +1.43  g3-g4 Bf5-d3 Rf1-f3 Re8-d8 f4-f5
>                                      Qc7-d7 Rf3-h3 Qd7-d4 Qb2xd4 Rd8xd4 f5xg6
>                                      h7xg6 Bg2xb7 Rd4xg4 Rh3-g3
> 13(23).  11:32.68 142674760   +1.43  g3-g4 Bf5-d3 Rf1-f3 Re8-d8 f4-f5
>                                      Qc7-d7 Rf3-h3 Qd7-d4 Qb2xd4 Rd8xd4 f5xg6
>                                      h7xg6 Bg2xb7 Rd4xg4 Rh3-g3
I didn't stop it calculating on this position, so here's the remainder of the
analysis:

 14(25)&  18:55.19 229130973   +1.29  g3-g4 Bf5-d3 Rf1-f3 Ra8-d8 f4-f5
                                      Re8-f8 Rf3-h3 Qc7-f4 Ng5xh7 Rf8-e8 Nh7-g5
                                      Rd8-d4 Rc1-d1
 14(25).  21:56.12 270604808   +1.29  g3-g4 Bf5-d3 Rf1-f3 Ra8-d8 f4-f5
                                      Re8-f8 Rf3-h3 Qc7-f4 Ng5xh7 Rf8-e8 Nh7-g5
                                      Rd8-d4 Rc1-d1
 15(26)&  43:03.09 524865167   +1.30  g3-g4 Bf5xg4 Bg2-d5 e7-e6 Ng5-e4
                                      f7-f5 Ne4-f6 Kg8-f7 Nf6xe8 Ra8xe8 Bd5-f3
                                      Bg4xf3 Rf1xf3 Na7-c6 Qb2-d2 Re8-d8
 15(26).  50:57.46 633970424   +1.30  g3-g4 Bf5xg4 Bg2-d5 e7-e6 Ng5-e4
                                      f7-f5 Ne4-f6 Kg8-f7 Nf6xe8 Ra8xe8 Bd5-f3
                                      Bg4xf3 Rf1xf3 Na7-c6 Qb2-d2 Re8-d8
 16(28)& 116:18.60 1435748914   +1.11  g3-g4 Bf5xg4 Bg2-d5 e7-e6 Ng5-e4
                                      f7-f5 Ne4-f6 Kg8-f7 Nf6xe8 Ra8xe8 Bd5-f3
                                      Bg4xf3 Rf1xf3 Na7-c6 Qb2-g2 Kf7-g8 Rc1-d1
 16(28). 170:46.06 -2124127531   +1.11  g3-g4 Bf5xg4 Bg2-d5 e7-e6 Ng5-e4
                                      f7-f5 Ne4-f6 Kg8-f7 Nf6xe8 Ra8xe8 Bd5-f3
                                      Bg4xf3 Rf1xf3 Na7-c6 Qb2-g2 Kf7-g8 Rc1-d1
 17(31)& 337:19.07 -130523602   +1.19  g3-g4 Bf5xg4 Bg2-d5 e7-e6 Ng5-e4
                                      f7-f5 Ne4-f6 Kg8-f7 Nf6xe8 Ra8xe8 Bd5-f3
                                      Bg4xf3 Rf1xf3 Na7-c6 Qb2-g2 Nc6-d4 Rf3-h3
                                      Kf7-g8
 17(31). 386:25.31 520880002   +1.19  g3-g4 Bf5xg4 Bg2-d5 e7-e6 Ng5-e4
                                      f7-f5 Ne4-f6 Kg8-f7 Nf6xe8 Ra8xe8 Bd5-f3
                                      Bg4xf3 Rf1xf3 Na7-c6 Qb2-g2 Nc6-d4 Rf3-h3
                                      Kf7-g8
 18(32)& 996:51.46 -805772457   +1.16  g3-g4 Bf5xg4 Bg2-d5 e7-e6 Ng5-e4
                                      f7-f5 Ne4-f6 Kg8-f7 Bd5-c4 Qc7xc5 Rf1-f2
                                      Qc5-e3 Nf6xh7 Kf7-g8 Nh7-f6 Kg8-f7 Nf6xe8
                                      Ra8xe8 Qb2-d2 Qe3xd2 Rf2xd2



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