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Subject: Re: A Report About Life on the Bottom

Author: Johan Melin

Date: 04:31:34 07/06/01

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On July 05, 2001 at 15:21:22, Randall Shane wrote:

>Just a little post to work off frustration with my program, FreeChecking.
>
>I know it's not very good (around 1700-1800 ICC blitz when not broken), and it
>makes up for lack of quality by being slow, and I've been rewriting parts of it
>to simplify the spaghetti mess it had become over a couple of years of very
>intermittent coding, but still...
>
>You know something's wrong somewhere when from the starting position, no book,
>your search gives something like this (fixed 9-ply search) :
>
>FreeChecking mode=test ply=9
>Vars : cp(W) ply(9) pos((null)) trace(trace.txt) hash(23) phash(21) spec(TEST)
> 1   0.00          plst         [-0.25,0.25] []
> 1   0.00[     21] plen    0.12 Pe2-e4 | Pe2-e4
> 2   0.00          plst         [-0.13,0.37] [Pe2-e4]
> 2   0.00[    101] plen    0.00 Pe2-e4 | Pe2-e4 Pe7-e5
> 3   0.00          plst         [-0.25,0.25] [Pe2-e4]
> 3   0.00[    721] plen    0.23 Pe2-e4 | Pe2-e4 Pe7-e5 Pd2-d3
> 4   0.01          plst         [-0.02,0.48] [Pe2-e4]
> 4   0.02[   3399] plen   -0.02 Ng1-f3 | Ng1-f3 Pf7-f5 Pd2-d4 Pe7-e5
> 5   0.02          plst         [-0.27,0.23] [Ng1-f3]
> 5   0.04[   5146] plen    0.23 Ng1-f3 | Ng1-f3 Pd7-d5 Nf3-d4 Bc8-d7 Nb1-c3
> 6   0.04          plst         [-0.02,0.48] [Ng1-f3]
> 6   0.32[  53609] plen   -0.02 Ng1-f3 | Ng1-f3 Nb8-c6 Pe2-e4 Ng8-f6 Bf1-d3
>Pd7-d5
> 7   0.32          plst         [-0.27,0.23] [Ng1-f3]
> 7   0.61[ 100688] plen    0.23 Ng1-f3 | Ng1-f3 Pd7-d5 Nf3-d4 Pe7-e5 Nd4-b5
>Pg7-g5 Nb1-c3
> 8   0.61          plst         [-0.02,0.48] [Ng1-f3]
> 8   6.30[1123379] plen   -0.02 Ng1-f3 | Ng1-f3 Pe7-e5 Pe2-e3 Nb8-c6 Pb2-b3
>Pd7-d5 Rh1-g1 Ng8-f6
> 9   6.30          plst         [-0.27,0.23] [Ng1-f3]
> 9  12.06[2139749] plen    0.23 Ng1-f3 | Ng1-f3 Pe7-e5 Nf3xe5 Pf7-f5 Pe2-e4
>Pd7-d6 Ne5-f3 Pf5xe4 Nb1-c3
> 9  12.06[2139749] move    0.23 Ng1-f3 | Ng1-f3 Pe7-e5 Nf3xe5 Pf7-f5 Pe2-e4
>Pd7-d6 Ne5-f3 Pf5xe4 Nb1-c3
>    [nps=177469] [reg=697723,qs=1442026,eval=1442026,ill=43503]
>    [pos hits=370312, cutoffs=741, misses=1452974]
>    [pawn hits=1255167, misses=186859]
>Move is Ng1-f3[0.23]
> Ng1-f3 Pe7-e5 Nf3xe5 Pf7-f5 Pe2-e4 Pd7-d6 Ne5-f3 Pf5xe4 Nb1-c3
>
>
>I can't believe the final PV that my program is generating.  I would suspect the
>new search, except the old search didn't do any better.  Probably something with
>hashing, evaluation, or something else. :-)


If I understand the output correctly, all the deeper results are unresolved
failhighs or faillows? Then you need the research the same depth with a new
window.

/Johan Melin




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