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Subject: Re: Draw detection(crafty) (more info)

Author: Robert Hyatt

Date: 14:03:03 02/04/03

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On February 04, 2003 at 15:50:38, Jarkko Pesonen wrote:

>Crafty needs quite many plys to find draw.
>Many other engine sees draw in 1st ply
>

Ignore the "plies" and compare the "times".  It saw draw in .03
seconds.  How long does your favorite take?  Plies don't really
matter as much as "time".

>
>  clearing hash tables
>  time surplus   0.00  time limit 30.00 (3:30)
>  depth   time  score   variation (1)
>    1     0.00   4.31   1. Kd2
>    1->   0.00   4.31   1. Kd2
>    2     0.00     --   1. Kd2
>    2     0.00   3.64   1. Kd2 Rd3+ 2. Ke1
>    2     0.00   3.99   1. Kb1 d6
>    2->   0.00   3.99   1. Kb1 d6
>    3     0.00     --   1. Kb1
>    3     0.00   0.00   1. Kb1 Qd3+ 2. Kc1 Qc4+
>    3     0.00   2.97   1. Kd2 Qd3+ 2. Ke1 R8h4
>    3->   0.00   2.97   1. Kd2 Qd3+ 2. Ke1 R8h4
>    4     0.02   2.65   1. Kd2 Qd3+ 2. Ke1 Qe4+ 3. Kf2 Rf8
>    4->   0.02   2.65   1. Kd2 Qd3+ 2. Ke1 Qe4+ 3. Kf2 Rf8
>    5     0.02     --   1. Kd2
>    5     0.03 -Mat04   1. Kd2 Rd3+ 2. Ke1 Qe4+ 3. Kf2 Rh2+
>                        4. Kg1 Qh1#
>    5     0.03   0.00   1. Nc3 Rh1 2. Qf7+ Kd8 3. Qf6+ Ke8
>    5->   0.05   0.00   1. Nc3 Rh1 2. Qf7+ Kd8 3. Qf6+ Ke8
>    6     0.05  -0.27   1. Nc3 Rh1 2. Qf7+ Kd8 3. Qf6+ Kc8
>                        4. Kd2 R1h2+ 5. Kd1 bxc3 6. Qxc3 Qxc3
>                        7. bxc3
>    6     0.06   0.00   1. Kb1 Qd3+ 2. Kc1 Qc4+
>    6->   0.06   0.00   1. Kb1 Qd3+ 2. Kc1 Qc4+
>    7     0.11   0.00   1. Kb1 Qd3+ 2. Kc1 Qc4+
>    7->   0.13   0.00   1. Kb1 Qd3+ 2. Kc1 Qc4+



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