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Subject: Re: The Pawn Game revisited...

Author: Sune Fischer

Date: 07:58:25 09/21/03

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On September 21, 2003 at 10:36:40, Tim Foden wrote:

>As others have pointed out... maybe you have a bug.
>
>GLC may also have a bug... but it thinks this one is a draw...
>
>Cheers, Tim.

Thanks for confirming the score was wrong too, I suspected it was more than a pv
problem but wasn't sure.

It's not so trivial without the kings, the pin-checker and move validater and
all sorts of functions needs to be rewired.
My guess is that some moves gets tossed out for being illegal when they are not.

-S.


>>fen 8/8/pppppppp/8/8/PPPPPPPP/8/8 w
>
>   abcdefgh      White to play
>  +--------+
> 8|░ ░ ░ ░ |8    ---- ------- -------
> 7| ░ ░ ░ ░|7
> 6|pppppppp|6
> 5| ░ ░ ░ ░|5
> 4|░ ░ ░ ░ |4
> 3|PPPPPPPP|3
> 2|░ ░ ░ ░ |2
> 1| ░ ░ ░ ░|1
>  +--------+
>   abcdefgh
>
>>hash 48
> Hash table size set to: 48.0MB
>>anal
> Game stage: Endgame
> Current eval: 0.000
> Ply   Time   Score   Nodes  Principal variation
>  7   0.020  +0.050   12684  a4 h5 2. b4 g5 3. c4 f5 4. h4
>  7   0.020  +0.050   14502  a4 h5 2. b4 g5 3. c4 f5 4. h4
>  8   0.030  +0.000   22679  a4 h5 2. b4 g5 3. c4 f5 4. h4 c5
>  8   0.040  +0.000   34323  a4 h5 2. b4 g5 3. c4 f5 4. h4 c5
>  9   0.050  +0.050   47039  a4 h5 2. b4 g5 3. c4 f5 4. g4 fxg4 5. hxg4 h4
>  9   0.060  +0.050   53548  a4 h5 2. b4 g5 3. c4 f5 4. g4 fxg4 5. hxg4 h4
> 10   0.120  +0.000  111129  a4 h5 2. b4 g5 3. c4 f5 4. g4 h4 5. gxf5 exf5 6.
>                               d4
> 10   0.230  +0.000  215100  a4 h5 2. b4 g5 3. c4 f5 4. g4 h4 5. gxf5 exf5 6.
>                               d4
> 11   0.511  +0.050  487820  a4 h5 2. b4 g5 3. h4 gxh4 4. gxh4 c5 5. d4 a5 6.
>                               dxc5 dxc5 7. b5
> 11   0.561  +0.050  533762  a4 h5 2. b4 g5 3. h4 gxh4 4. gxh4 c5 5. d4 a5 6.
>                               dxc5 dxc5 7. b5
> 12   0.791  +0.000  745253  a4 h5 2. b4 g5 3. h4 c5 4. hxg5 fxg5 5. d4 cxb4 6.
>                               cxb4 a5 7. bxa5 bxa5 8. e4
> 12   1.021  +0.000  965570  a4 h5 2. b4 g5 3. h4 c5 4. hxg5 fxg5 5. d4 cxb4 6.
>                               cxb4 a5 7. bxa5 bxa5 8. e4
> 13   1.943  +0.050 1831973  a4 h5 2. b4 g5 3. c4 f5 4. g4 hxg4 5. hxg4 fxg4 6.
>                               fxg4 c5 7. bxc5 dxc5 8. e4 a5
> 13   2.153  +0.050 2037207  a4 h5 2. b4 g5 3. c4 f5 4. g4 hxg4 5. hxg4 fxg4 6.
>                               fxg4 c5 7. bxc5 dxc5 8. e4 a5
> 14   2.854  +0.000 2694208  a4 h5 2. b4 g5 3. c4 f5 4. g4 fxg4 5. hxg4 h4 6.
>                               d4 c5 7. dxc5 dxc5 8. bxc5 bxc5 9. e4
> 14   3.645  +0.000 3437227  a4 h5 2. b4 g5 3. c4 f5 4. g4 fxg4 5. hxg4 h4 6.
>                               d4 c5 7. dxc5 dxc5 8. bxc5 bxc5 9. e4
> 15   5.458  +0.050 5123217  a4 h5 2. b4 g5 3. c4 f5 4. h4 gxh4 5. gxh4 c5 6.
>                               bxc5 bxc5 7. f4 a5 8. d4 cxd4 9. exd4 d5
> 15   6.359  +0.050 5942582  a4 h5 2. b4 g5 3. c4 f5 4. h4 gxh4 5. gxh4 c5 6.
>                               bxc5 bxc5 7. f4 a5 8. d4 cxd4 9. exd4 d5
> 16  11.737  +0.000  11000k  a4 f5 2. b4 a5 3. bxa5 bxa5 4. d4 c5 5. dxc5 dxc5
>                               6. h4 e5 7. e4 h5 8. c4 f4 9. gxf4 exf4 10. e5
> 16  15.081  +0.000  14195k  a4 f5 2. b4 a5 3. bxa5 bxa5 4. d4 c5 5. dxc5 dxc5
>                               6. h4 e5 7. e4 h5 8. c4 f4 9. gxf4 exf4 10. e5
> 17  22.532  +0.000  21498k  a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
>                               exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
>                               bxa5 bxa5
> 17  24.926  +0.000  23833k  a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
>                               exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
>                               bxa5 bxa5
> 18  29.422  +0.000  28246k  a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
>                               exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
>                               bxa5 bxa5
> 18  32.627  +0.000  31427k  a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
>                               exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
>                               bxa5 bxa5
> 19  39.677  +0.000  38435k  a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
>                               exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
>                               bxa5 bxa5
> 19  43.542  +0.000  42211k  a4 h5 2. h4 g5 3. f4 gxf4 4. gxf4 c5 5. e4 f5 6.
>                               exf5 exf5 7. d4 cxd4 8. cxd4 d5 9. b4 a5 10.
>                               bxa5 bxa5
> 20  53.136  +0.000  52064k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 f5 7. e4 c5 8. exf5 exf5 9. d4 cxb4 10.
>                               cxb4 d5
> 20  58.424  +0.000  57525k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 f5 7. e4 c5 8. exf5 exf5 9. d4 cxb4 10.
>                               cxb4 d5
> 21 1:11.37  +0.000  71193k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
> 21 1:25.44  +0.000  86243k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
> 22 1:40.17  +0.000 102444k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
> 22 1:50.78  +0.000 113744k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
> 23 2:09.01  +0.000 133539k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
> 23 2:18.89  +0.000 144727k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
> 24 2:35.21  +0.000 163889k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
> 24 2:45.86  +0.000 176177k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
> 25 3:03.07  +0.000 197208k  a4 h5 2. h4 g5 3. b4 gxh4 4. gxh4 b5 5. axb5 axb5
>                               6. f4 c5 7. e4 cxb4 8. cxb4 f5 9. exf5 exf5 10.
>                               d4 d5
>Analyse>exit
> local:  t=3:09.12  nps=1082051.0  n=204639647 (80.5% / 19.5%)
> total:  t=3:09.12  nps=1082051.0  n=204639647
> stats:  fh=87.2%/8.70%/2.881%  draws=44690
> trans:  probes=143474007  hits=41211377 (28.72%)  draft=30292904 (21.11%)
> tcuts:  exact=616 (0.00%)  upper=17237149 (12.01%)  lower=11185277 (7.80%)
> tstor:  exact=1068 (0.00%)  upper=80360157 (69.85%)  lower=34689716 (30.15%)
> ext:  check=0  recap=10795604  ppush=20398334  1rep=0  thrt=0
> q-moves:  gen=4910781  tested=4336036  made/un=964754  max-dep=8
> max eval diff:  part-1=15.650  part-2=0.000



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