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

Author: Jarkko Pesonen

Date: 12:50:38 02/04/03

Go up one level in this thread


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


  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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