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Subject: Re: Testposition - Pawn ending

Author: Peter Berger

Date: 16:46:00 12/28/01

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On December 28, 2001 at 16:41:29, Dieter Buerssner wrote:

>
>I am sure, other programs will be much faster.

LOL, you must be joking. I think with this kind of position you'll beat most of
the ones that just beat Yace in the 1. g4 one.

I can't see how this could be solved fast without specific knowledge. It is
amazing how fast you get the fail low on Ke3.

Of the ones I tried the only program I found that was faster than Yace was
Shredder 6. A _very_ nice position as it is easy to understand - it would fit
well into the PET testsuite.

Some output of the latest published version of your program:

993191276 23:35.1  -1.40 20t  35.d5 exd5 36.e6+ Ke7 37.Ke3 c3 38.Kd3 d4
                               39.Kc2 Kd6 40.Kb3 Kc7 41.Kc2 Kd8 42.Kd3H c2H
                               43.Kxc2H g6H 44.fxg6H Kc8H 45.e7H d3+H 46.Kxd3H
                               Kc7H {HT}
1254396539 29:44.1  -1.40 20.  35.d5 exd5 36.e6+ Ke7 37.Ke3 c3 38.Kd3 d4
                               39.Kc2 Kd6 40.Kb3 Kc7 41.Kc2 Kd8 42.Kd3 c2
                               43.Kxc2 g6 44.fxg6 Kc8 45.e7 d3+ 46.Kxd3 Kc7
 +---+---+---+---+---+---+---+---+
8|   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
7|   |   |   | k |   |   | p |   |
 +---+---+---+---+---+---+---+---+
6| p |   |   |   | p | p |   |   |
 +---+---+---+---+---+---+---+---+
5| P | p |   |   | P | P |   |   |
 +---+---+---+---+---+---+---+---+
4|   | P | p | P |   |   | P |   |
 +---+---+---+---+---+---+---+---+
3|   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
2|   |   |   |   | K |   |   |   |
 +---+---+---+---+---+---+---+---+
1|   |   |   |   |   |   |   |   |
 +---+---+---+---+---+---+---+---+
   a   b   c   d   e   f   g   h
setboard 8/3P4/p3kQ2/Pp4p1/1P6/K7/3q4/6q1 b - - 1 49
hashmove c4c3
haskey 0x70cc32fa,0xc9b443b1
Warning table move 0x49a invalid, nodes 1757873796, rep -403
1844169091 43:56.1  -1.52 21t  35.d5 exd5 36.e6+ Ke7 37.Ke3 c3 38.Kd3 d4
                               39.Kc2 Kd6 40.Kb3 Kc7 41.Kc2 Kc6 42.Kd3 Kd6
                               43.Kc2 g6 44.Kd3 gxf5 45.gxf5 Kc7 46.Kc2 Kc6H
                               47.Kd3H Kb7H 48.e7H c2H 49.e8=QH c1=QH 50.Qd7+H
                               {HT} {-80}
2377345544 56:29.5  -1.52 21.  35.d5 exd5 36.e6+ Ke7 37.Ke3 c3 38.Kd3 d4
                               39.Kc2 Kd6 40.Kb3 Kc7 41.Kc2 Kc6 42.Kd3 Kd6
                               43.Kc2 g6 44.Kd3 gxf5 45.gxf5 Kc7 46.Kc2 Kc6
                               47.Kd3 Kb7 48.e7 c2 49.e8=Q c1=Q 50.Qd7+ {HT}
                               {-80}
input: exit
2674869187 1:03:48  -1.52 21f. 35.d5 exd5 36.e6+ Ke7 37.Ke3 c3 38.Kd3 d4
                               39.Kc2 Kd6 40.Kb3 Kc7 41.Kc2 Kc6 42.Kd3 Kd6
                               43.Kc2 g6 44.Kd3 gxf5 45.gxf5 Kc7 46.Kc2 Kc6
                               47.Kd3 Kb7 48.e7 c2 49.e8=Q c1=Q 50.Qd7+ {HT}
                               {-80}
2674869187 Nodes, 9.67% Leavenodes, 698606 Nodes/sec
979019062 eval, 89.60% score, 1907196160 genmoves, 17.14% captures le 679/723
ext: pawn 31517484, rcp 2472821, chk 15822, repchk 1951075, null 206925, prune
66267113
htable: 1618874064 store, 547 rejected, 2665949313 probe, 56.0% f/p, 92.3% f/s
entries 10666665 age 1 renew 0
hash_errors 1
egtb probes 448, found 302 max_depth 47
white (35): input: quit




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