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Subject: Re: How long does it take your program to avoid this move?

Author: Miguel A. Ballicora

Date: 09:52:59 12/27/01

Go up one level in this thread


On December 26, 2001 at 18:01:35, Andrew Smith wrote:

>An interesting position, where the point is not to find some particular move,
>but to avoid one. Qxh6? is not right in this position. How long does your
>favourite program need to avoid it?
>
>6k1/p3b1np/6pr/6P1/1B2p2Q/K7/7P/8 w KQkq - 0 1
>
>Interesting to see gambit tiger 2.0 analysis after a while. The score is clearly
>dropping
>
>
>[D]6k1/p3b1np/6pr/6P1/1B2p2Q/K7/7P/8 w - - 0 1
>
>Analysis by Gambit Tiger 2.0:
>
>1.Qxh6 Nf5 2.Qh3 Bxg5 3.Qg4 Bc1+ 4.Kb3
>  +-  (4.08)   Depth: 6   00:00:00  3kN
>1.Qxh6 Nf5 2.Qh3 Bxg5 3.Qg4 Bc1+ 4.Ka2 a5 5.Bxa5
>  +-  (4.30)   Depth: 7   00:00:00  11kN
>1.Qxh6 Nf5 2.Qh3 Bxg5 3.Qg4 Bc1+ 4.Kb3 a5 5.Bxa5
>  +-  (4.90)   Depth: 8   00:00:01  28kN
>1.Qxh6 Nf5 2.Qh3 Bxg5
>  +-  (4.90)   Depth: 9   00:00:01  60kN
>1.Qxh6 Nf5 2.Qh3 Bxg5 3.Qb3+ Kg7 4.Qd5 Bf4 5.Qxe4 Bxh2 6.Qb7+ Kh6 7.Qxa7
>  +-  (4.80)   Depth: 10   00:00:02  106kN
>1.Qxh6 Nf5 2.Qh3 Bxg5 3.Qg4 a5 4.Bc5 Bc1+ 5.Kb3 Kf7 6.Qxe4 Kf6
>  +-  (5.00)   Depth: 11   00:00:07  482kN
>1.Qxh6
>  +-  (4.10)   Depth: 12   00:01:02  4288kN
>1.Qxh6
>  +-  (3.20)   Depth: 13   00:04:21  17331kN
>
>(only, MyTown 01.11.2001)


Gaviota 0.23 (unreleased version) PIII 800 mhz 8MB hash.
Takes 34 seconds to see problems and 366 seconds to finally chose another move.


    259825   9       2.2    +3.91  Qh4xh6   Ng7-f5   Qh6-h3   Be7xg5
                                   Qh3-g4   Bg5-c1   Ka3-a4   Kg8-f7
                                   Qg4xe4   Bc1-g5
    358255   9:      3.0    +3.91  Qh4xh6   Ng7-f5   Qh6-h3   Be7xg5
                                   Qh3-g4   Bg5-c1   Ka3-a4   Kg8-f7
                                   Qg4xe4   Bc1-g5
    574114  10       4.7      :-(  Qh4xh6
   1269099  10       9.9      :-(
   1484402  10      11.7    +3.34  Qh4xh6   Be7xb4   Ka3xb4   Ng7-h5
                                   Kb4-c4   a7-a5    Kc4-b3   e4-e3
                                   Kb3-c3   a5-a4    h2-h4    a4-a3
                                   Kc3-c4   <-transp
   1788503  10:     13.5    +3.34  Qh4xh6   Be7xb4   Ka3xb4   Ng7-h5
                                   Kb4-c4   a7-a5    Kc4-b3   e4-e3
                                   Kb3-c3   a5-a4    h2-h4    a4-a3
                                   Kc3-c4   <-transp
   2541114  11      19.5    +2.97  Qh4xh6   Be7xb4   Ka3xb4   Ng7-h5
                                   Kb4-c4   a7-a5    Kc4-b3   e4-e3
                                   Kb3-c3   a5-a4    Kc3-c2   a4-a3
                                   h2-h3    a3-a2    Kc2-b2
   4274392  11:     32.5    +2.97  Qh4xh6   Be7xb4   Ka3xb4   Ng7-h5
                                   Kb4-c4   a7-a5    Kc4-b3   e4-e3
                                   Kb3-c3   a5-a4    Kc3-c2   a4-a3
                                   h2-h3    a3-a2    Kc2-b2
   4491503  12      34.1      :-(  Qh4xh6
  10377841  12      79.1      :-(
  15967569  12     121.5      :-(
  44669935  12     366.6    -0.01  Qh4-f4   Rh6-h3   Ka3-a4   Be7xb4
                                   Ka4xb4   Ng7-f5   Kb4-c5   Rh3-c3
                                   Kc5-b4   Rc3-d3   Qf4-b8   Kg8-f7
                                   Qb8xa7   Nf5-e7   Qa7-f2   Kf7-e6
                                   Qf2-f6   Ke6-d7   Qf6-f2
  63121749  12     523.2    +0.32  Qh4-g3   Be7xb4   Ka3-a4   Rh6-h5
                                   Qg3-b3   Kg8-h8   Qb3xb4   Kh8-g8
                                   Qb4-b8   Kg8-f7   Qb8xa7   Kf7-g8
                                   Qa7-b8   Kg8-f7   Qb8-c7   Kf7-f8
                                   Qc7-d6   Kf8-f7   Qd6-f6   Kf7-g8
                                   Qf6-e5
  75526141  12     632.8    +1.15  Qh4xe4   Be7xb4   Ka3xb4   Rh6-h5
                                   Qe4-a8   Kg8-f7   Qa8xa7   Kf7-f8
                                   Qa7-b8   Kf8-e7   Qb8-b7   Ke7-f8
                                   Qb7-c8   Kf8-e7   Qc8-c7   Ke7-f8
                                   Qc7-d6   Kf8-e8   Qd6-c6   Ke8-f7
                                   Qc6-g2
  79654427  12:    668.7    +1.15  Qh4xe4   Be7xb4   Ka3xb4   Rh6-h5
                                   Qe4-a8   Kg8-f7   Qa8xa7   Kf7-f8
                                   Qa7-b8   Kf8-e7   Qb8-b7   Ke7-f8
                                   Qb7-c8   Kf8-e7   Qc8-c7   Ke7-f8
                                   Qc7-d6   Kf8-e8   Qd6-c6   Ke8-f7
                                   Qc6-g2




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