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Subject: Re: Forced Mate in 7......?

Author: Eelco de Groot

Date: 08:58:34 05/28/05

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On May 28, 2005 at 11:30:11, Rob Basham wrote:

>[D]6Bb/8/8/8/8/2nK4/2R5/1k6 w - - 0 1
>
>White plays Bh7 and mates in 7.
>
>
>1. Bh7....if Ka1,
>2.  Kc4 mates then in a forced win.
>
>I was wondering if any programs announce a mate (in any number of moves)
>at move one....
>thanks
>Rob

My current testversion Pro Deo 1.1 Vulcan Q1d8c sees a good eval for Bh7 after 2
seconds but not yet any forced mate after 1..Na2. TB's may make a difference,
certainly six piece tables will show it, but Pro Deo does not have TBs. I see it
is a mate in 17? Probably to deep for most programs, as that is 33 plies..

Pro deo 1.1 Vulcan Q1d8c - Tactical Engine

 00:00:00   1.00  1.02  1.Bc4
 00:00:00   1.02  1.14  1.Be6
 00:00:00   1.12  1.17  1.Rh2
 00:00:00   2.00  1.04  1.Rh2 Be5
 00:00:00   2.06  1.08  1.Ba2 Nxa2
 00:00:00   3.00  1.05  1.Ba2 Nxa2 2.Rc4 Nc1
 00:00:00   3.03  1.11  1.Rf2 Be5 2.Be6
 00:00:00   4.00  1.11  1.Rf2 Be5 2.Rf5 Bg7
 00:00:00   5.00  1.17  1.Rf2 Be5 2.Rf5 Bg7 3.Be6
 00:00:00   6.00  1.10  1.Rf2 Nb5 2.Rh2 Bf6 3.Rh1 Kb2 4.Bd5
 00:00:00   6.01  1.17  1.Rg2 Be5 2.Rg5 Bf6 3.Rf5 Bg7 4.Be6 Kb2 5.Rf2
 00:00:00   7.00  1.13  1.Rg2 Kc1 2.Bf7 Bf6 3.Be6 Nb5 4.Bd5
 00:00:00   7.01  1.17  1.Rf2 Nb5 2.Bh7 Nd4 3.Kc3 Ka1 4.Rf1 Ka2
 00:00:00   7.03  1.17  1.Bh7
 00:00:00   8.00  1.19  1.Rf2 Be5 2.Rf5 Bg7 3.Be6 Kb2 4.Rf2 Ka3 5.Rf1
                        Kb4
 00:00:00   8.02  1.30  1.Bh7 Na4 2.Ke3 Ka1 3.Rc8 Be5 4.Ra8
 00:00:00   9.00  1.68  1.Bh7 Na2 2.Kc4 Nc1 3.Rc3 Kb2 4.Rc2 Kb1 5.Rc3
                        Kb2 6.Rc2
 00:00:00  10.00  1.68  1.Bh7 Na2 2.Kc4 Nc1 3.Rc3 Kb2 4.Rc2 Kb1 5.Rc3
                        Kb2 6.Rc2
 00:00:01  11.00  1.69  1.Bh7 Na2 2.Kc4 Bb2 3.Rh2 Ka1 4.Rh6 Ba3 5.Rh1
                        Nc1 6.Be4 Kb2 7.Rh2
 00:00:02  12.00  4.70  1.Bh7 Na2 2.Kc4 Bb2 3.Rh2 Ka1 4.Rh6 Bc1 5.Ra6
                        Kb2 6.Rb6 Ka3 7.Bf5 Bd2 8.Rb3 Ka4
 00:00:03  13.00  4.54  1.Bh7 Na2 2.Kc4 Nc1 3.Kb5 Bb2 4.Rc6 Ka2 5.Kb4
                        Ba3 6.Ka4 Ka1 7.Kxa3 Ne2
 00:00:11  14.00  5.11  1.Bh7 Nb5 2.Rc8 Be5 3.Kc4 Kc1 4.Kxb5 Kd2 5.Re8
 00:00:46  15.00  5.16  1.Bh7 Na2 2.Kc4 Bb2 3.Rh2
 00:01:53  16.00  5.39  1.Bh7 Na2 2.Kc4 Bb2 3.Rh2
 00:03:12  17.00  5.39  1.Bh7 Na2 2.Kc4 Bb2 3.Be4 Ka1 4.Bd3 Nc1 5.Rf2
                        Nxd3 6.Rxb2
 00:08:21  18.00  5.45  1.Bh7 Na2 2.Kc4

 Eelco



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