interesting pawn race position

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jdart
Posts: 4406
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

interesting pawn race position

Post by jdart »

From a recent online game:

[d] 8/8/5p1k/1p1pp2P/pP3PK1/P1P5/8/8 b - f3

d4 wins. Arasan 11.1 has trouble with this (thinks it's only a draw). 10.4 solves it, although it takes a while (it only switches to d4 at ply 19). 10.4 has some pawn race code that is not currently in the 11.0 tree.

The commercials and Crafty 21.x seem to have no difficulty here.

--Jon
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Old Deep Fritz 1, 31 seconds

Post by kgburcham »

[d] 8/8/5p1k/1p1pp2P/pP3PK1/P1P5/8/8 b - - 0 1

Old Deep Fritz 1:

1...Kh7 2.f5 Kh6 3.Kh4 d4 4.cxd4 exd4 5.Kg3 Kxh5 6.Kf4 d3 7.Ke3
=/+ (-0.34) Depth: 23/42 00:00:18 72996kN
1...d4!
=/+ (-0.38) Depth: 23/42 00:00:21 87159kN
1...d4 2.fxe5 d3 3.Kf3 fxe5 4.c4 e4+ 5.Ke3 bxc4 6.Kd2 Kxh5 7.b5
-+ (-3.75) Depth: 23/43 00:00:31 135mN
1...d4 2.fxe5 d3 3.Kf3 fxe5 4.c4 e4+ 5.Ke3 bxc4 6.Kd2 Kxh5 7.b5
-+ (-3.72) Depth: 24/47 00:00:46 215mN
1...d4!
-+ (-4.03) Depth: 25/44 00:01:07 317mN
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michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: interesting pawn race position

Post by michiguel »

jdart wrote:From a recent online game:

[d] 8/8/5p1k/1p1pp2P/pP3PK1/P1P5/8/8 b - f3

d4 wins. Arasan 11.1 has trouble with this (thinks it's only a draw). 10.4 solves it, although it takes a while (it only switches to d4 at ply 19). 10.4 has some pawn race code that is not currently in the 11.0 tree.

The commercials and Crafty 21.x seem to have no difficulty here.

--Jon
Gaviota sticks to d4 in just under 2 seconds, ply 10. (AMD 2.4Ghz)
The score is not great but the PVs shown seem to be correct.

Miguel

Code: Select all

         3   1       0.0    +0.59  exf4
         8   1       0.0    +0.77  e4
        11   1:      0.0    +0.77  e4
        21   2       0.0    +0.82  e4 2.Kh4
        56   2:      0.0    +0.82  e4 2.Kh4
       106   3       0.0    +0.98  e4 2.f5 Kg7
       187   3:      0.0    +0.98  e4 2.f5 Kg7
       207   4       0.0      :-(  e4
      1243   4       0.0    +1.14  d4 2.c4 d3 3.Kf3 e4+ 4.Ke3
      1272   4:      0.0    +1.14  d4 2.c4 d3 3.Kf3 e4+ 4.Ke3
      1608   5       0.0      :-(  d4
      2051   5       0.0      :-(  
      3343   5       0.0    +0.05  d4 2.c4 f5+ 3.Kg3 d3 4.Kf2 d2 5.Ke2
      4792   5       0.0    +0.48  Kg7 2.fxe5 fxe5 3.Kg5 Kh7 4.h6
      5068   5:      0.0    +0.48  Kg7 2.fxe5 fxe5 3.Kg5 Kh7 4.h6
      7795   6       0.0    +0.70  Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh6
                                   5.Kg4
      9580   6:      0.0    +0.70  Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh6
                                   5.Kg4
     15407   7       0.0    +0.85  Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh6
                                   5.Kg4 Kg7
     19237   7:      0.0    +0.85  Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh6
                                   5.Kg4 Kg7
     33231   8       0.1    +0.75  Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh7
                                   5.Kg4 Kh6 6.Kh4
     43001   8:      0.1    +0.75  Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh7
                                   5.Kg4 Kh6 6.Kh4
     75482   9       0.1    +0.85  Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh7
                                   5.Kg3 Kh6 6.Kg4 Kg7
     96816   9:      0.2    +0.85  Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh7
                                   5.Kg3 Kh6 6.Kg4 Kg7
    107284  10       0.2      :-(  Kg7
    964389  10       1.9    +1.01  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf3 Kf6 11.Kf4 Ke6
    978838  10:      1.9    +1.01  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf3 Kf6 11.Kf4 Ke6
   1768408  11       3.4    +0.94  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kh6
                                   9.Kf5 Kg7 10.Kg4 Kg6 11.Kf4 f5
   1817225  11:      3.5    +0.94  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kh6
                                   9.Kf5 Kg7 10.Kg4 Kg6 11.Kf4 f5
   3382312  12       6.3    +1.05  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Kf3 Kg5 12.Kg3
                                   f4+ 13.Kf3
   3523065  12:      6.5    +1.05  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Kf3 Kg5 12.Kg3
                                   f4+ 13.Kf3
   9489294  13      16.8    +0.96  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Ke3 Ke5 12.Kf3
                                   f4 13.Kg4
   9920416  13:     17.5    +0.96  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Ke3 Ke5 12.Kf3
                                   f4 13.Kg4
  29601332  14      52.6    +0.93  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Kf3 Ke5 12.Ke3
                                   f4+ 13.Kf3 Kf5 14.Ke2
  33634843  14:     59.3    +0.93  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Kf3 Ke5 12.Ke3
                                   f4+ 13.Kf3 Kf5 14.Ke2
  91652844  15     164.1    +1.15  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Kf3 Ke5 12.Ke3
                                   f4+ 13.Kf3 Kf5 14.Ke2 Ke4
  97974650  15:    174.1    +1.15  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Kf3 Ke5 12.Ke3
                                   f4+ 13.Kf3 Kf5 14.Ke2 Ke4
 320093238  16     598.6    +1.15  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Kf3 Ke5 12.Ke3
                                   f4+ 13.Kf3 Kf5 14.Kf2 Ke4 15.Ke2
 338030471  16:    626.9    +1.15  d4 2.fxe5 dxc3 3.e6 c2 4.e7 c1=Q 5.e8=Q
                                   Qg5+ 6.Kf3 Qxh5+ 7.Qxh5+ Kxh5 8.Kf4 Kg6
                                   9.Kg4 f5+ 10.Kf4 Kf6 11.Kf3 Ke5 12.Ke3
                                   f4+ 13.Kf3 Kf5 14.Kf2 Ke4 15.Ke2
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Old Deep Fritz 1, 31 seconds

Post by bob »

kgburcham wrote:[d] 8/8/5p1k/1p1pp2P/pP3PK1/P1P5/8/8 b - - 0 1

Old Deep Fritz 1:

1...Kh7 2.f5 Kh6 3.Kh4 d4 4.cxd4 exd4 5.Kg3 Kxh5 6.Kf4 d3 7.Ke3
=/+ (-0.34) Depth: 23/42 00:00:18 72996kN
1...d4!
=/+ (-0.38) Depth: 23/42 00:00:21 87159kN
1...d4 2.fxe5 d3 3.Kf3 fxe5 4.c4 e4+ 5.Ke3 bxc4 6.Kd2 Kxh5 7.b5
-+ (-3.75) Depth: 23/43 00:00:31 135mN
1...d4 2.fxe5 d3 3.Kf3 fxe5 4.c4 e4+ 5.Ke3 bxc4 6.Kd2 Kxh5 7.b5
-+ (-3.72) Depth: 24/47 00:00:46 215mN
1...d4!
-+ (-4.03) Depth: 25/44 00:01:07 317mN
Where'd you get the Ruger .22 target pistol? I've had one for 25 years or so. All it needed when I bought it was some trigger work to eliminate the "creep"...
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Old Deep Fritz 1, 31 seconds

Post by kgburcham »

Gemtech sells.
I like the old German shape.
All of the old WWII movies had the German officers holding these. (I know you know this). The Oasis has an internally silenced barrel.
Only a click at the firing range, for the girls to get better at target and feel more comfortable with loaded weapon.
I do not have one yet. Has to have class 3 tax stamp, $200. Barrel is about $600, and then the gun is about $400. So total will be about $1200 to own.



http://www.gem-tech.com/twenty2.html
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pijl

Re: interesting pawn race position

Post by pijl »

jdart wrote:From a recent online game:

[d] 8/8/5p1k/1p1pp2P/pP3PK1/P1P5/8/8 b - f3

d4 wins. Arasan 11.1 has trouble with this (thinks it's only a draw). 10.4 solves it, although it takes a while (it only switches to d4 at ply 19). 10.4 has some pawn race code that is not currently in the 11.0 tree.
No problem for the Baron, showing a nice score pretty quickly:

Code: Select all

11.   0.942   0:00.37       130178 h6h7 f4e5 f6e5 g4h3 e5e4 h3g3 h7g7 g3f4 g7h7
12&   0.695   0:00.48       177804 h6h7 f4e5 f6e5 g4g5 e5e4 g5h4 h7g7 h4h3 g7g8 h3g4 g8h8
12&   0.947   0:00.54       207827 d5d4 f4e5 d4c3 e5e6 h6g7 h5h6 g7h6 e6e7 c3c2 g4f5 c2c1q e7e8q c1f1 f5e4
12.   0.947   0:00.57       221870 d5d4 f4e5 d4c3 e5e6 h6g7 h5h6 g7h6 e6e7 c3c2 g4f5 c2c1q e7e8q c1f1 f5e4
13&   0.947   0:00.68       265906 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4g4 g6f7
13.   0.947   0:00.73       290524 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4g4 g6f7
14&   0.951   0:00.86       352231 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4g4 f6f5 g4f4 g6f6
14.   0.951   0:00.93       389294 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4g4 f6f5 g4f4 g6f6
15&   1.174   0:01.11       483065 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4g4 f6f5 g4f4 g6f6 f4f3
15.   1.174   0:01.20       534909 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4g4 f6f5 g4f4 g6f6 f4f3
16&   1.234   0:01.54       697444 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3d4 f5f4 d4e4
16.   1.234   0:01.68       771759 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3d4 f5f4 d4e4
17&   1.308   0:02.28      1041879 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3f3 g6g5 f3g3 f5f4 g3f3
17.   1.308   0:02.45      1145369 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3f3 g6g5 f3g3 f5f4 g3f3
18&   1.408   0:03.56      1593721 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3f3 g6g5 f3g3 f5f4 g3f3 g5f5
18.   1.408   0:03.90      1742117 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3f3 g6g5 f3g3 f5f4 g3f3 g5f5
19&   1.726   0:06.17      2610184 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3f3 g6g5 f3g3 f5f4 g3f3 g5f5 f3f2
19.   1.726   0:06.50      2819071 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3f3 g6g5 f3g3 f5f4 g3f3 g5f5 f3f2
20&   2.197   0:10.43      4226312 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3f3 g6g5 f3g3 f5f4 g3f3 g5f5 f3f2 f5e4
20.   2.197   0:11.03      4518343 d5d4 f4e5 d4c3 e5e6 c3c2 e6e7 c2c1q e7e8q c1g5 g4f3 g5h5 e8h5 h6h5 f3f4 h5g6 f4e3 f6f5 e3f3 g6g5 f3g3 f5f4 g3f3 g5f5 f3f2 f5e4
21&   2.315   0:28.18      9801111 d5d4 c3d4 e5d4 f4f5 d4d3 g4f3 h6h5 f3e3 h5g4 e3d3 g4f5 d3d4 f5e6 d4e4 f6f5 e4f4 e6d5 f4f5 d5c4 f5e4 c4b3 e4d5 b3a3
21.   2.315   0:28.96     10192770 d5d4 c3d4 e5d4 f4f5 d4d3 g4f3 h6h5 f3e3 h5g4 e3d3 g4f5 d3d4 f5e6 d4e4 f6f5 e4f4 e6d5 f4f5 d5c4 f5e4 c4b3 e4d5 b3a3
22&   2.315   0:34.00     11864928 d5d4 c3d4 e5d4 f4f5 d4d3 g4f3 h6h5 f3e3 h5g4 e3d3 g4f5 d3d4 f5e6 d4e4 f6f5 e4f4 e6d5 f4f5 d5c4 f5e4 c4b3 e4d5 b3a3
22.   2.315   0:34.95     12429348 d5d4 c3d4 e5d4 f4f5 d4d3 g4f3 h6h5 f3e3 h5g4 e3d3 g4f5 d3d4 f5e6 d4e4 f6f5 e4f4 e6d5 f4f5 d5c4 f5e4 c4b3 e4d5 b3a3
23&   3.964   1:12.81     22885662 d5d4 c3d4 e5d4 f4f5 d4d3 g4f3 h6h5 f3e3 h5g4 e3d3 g4f5 d3d4 f5g4 d4e3 f6f5 e3f2 g4f4 f2g2 f4e3 g2g3 f5f4 g3g4 f4f3 g4g3 f3f2
23.   3.964   1:14.20     23671879 d5d4 c3d4 e5d4 f4f5 d4d3 g4f3 h6h5 f3e3 h5g4 e3d3 g4f5 d3d4 f5g4 d4e3 f6f5 e3f2 g4f4 f2g2 f4e3 g2g3 f5f4 g3g4 f4f3 g4g3 f3f2
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Roman Hartmann
Posts: 295
Joined: Wed Mar 08, 2006 8:29 pm

Re: Old Deep Fritz 1, 31 seconds

Post by Roman Hartmann »

kgburcham wrote:Gemtech sells.
I like the old German shape.
All of the old WWII movies had the German officers holding these. (I know you know this). ...
OT: Not sure which films you saw then but the German WWII officers in the films I saw had either the Luger P08 or the Walther P38. But maybe not all the directors care for (unimportant) details in their films ...

Roman
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AdminX
Posts: 6363
Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA

Re: interesting pawn race position

Post by AdminX »

Here are the evals from Mediocre Chess:

8/8/5p1k/1p1pp2P/pP3PK1/P1P5/8/8 b - - 0 1

Analysis by Mediocre v0.334:

1...d4 2.cxd4 exd4 3.Kf5 d3 4.Ke4 d2 5.Kd3
-/+ (-0.82) Depth: 6 00:00:00 2kN
-/+ (-1.05) Depth: 8 00:00:00 4kN

1...Kg7 2.f5
=/+ (-0.68) Depth: 9 00:00:00 30kN
=/+ (-0.65) Depth: 10 00:00:00 50kN

1...Kh7 2.f5
-/+ (-1.02) Depth: 11 00:00:00 95kN

1...Kg7 2.f5
=/+ (-0.36) Depth: 12 00:00:00 136kN

1...Kh7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4
=/+ (-0.36) Depth: 13 00:00:00 153kN
=/+ (-0.26) Depth: 14 00:00:00 310kN

1...Kg7 2.fxe5 fxe5 3.Kf5 e4 4.Kf4
=/+ (-0.26) Depth: 15 00:00:00 376kN

1...Kh7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 e3 5.Kxe3 d4+ 6.cxd4
= (-0.03) Depth: 16 00:00:00 587kN
= (-0.08) Depth: 17 00:00:01 835kN

1...Kg7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4 Kh6 5.Kg4 Kh7 6.Kf4 Kg7 7.Kg3 Kh8 8.Kf4 Kh7 9.Kg3 e3 10.Kf3 d4 11.cxd4
= (-0.08) Depth: 18 00:00:03 2075kN

1...Kh7 2.fxe5 fxe5 3.Kg5 e4 4.Kf4
= (-0.08) Depth: 19 00:00:03 2417kN
= (0.00) Depth: 20 00:00:17 11354kN

1...d4 2.fxe5 fxe5
= (-0.23) Depth: 21 00:00:28 19999kN
-/+ (-1.40) Depth: 25 00:07:55 318mN
"Good decisions come from experience, and experience comes from bad decisions."
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