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Subject: Re: A mate for Leonid

Author: Jonas Cohonas

Date: 10:30:06 10/10/01

Go up one level in this thread


On October 10, 2001 at 13:16:34, Sven Reichard wrote:

>Thought you might like this.
>
>Bernhard Gaerths, "Das Matt", 1942
>
>[D] 8/8/ppPP4/kp1Pp1P1/1p2P1pb/1K1P4/P4B11/8 w - -
>
>Please indicate your result! I'd also be interested in what other programs
>think.
>
>Alice fails to solve it in reasonable time.
>
>Sven.

Goliath Light 1.5 needs 5:41 min to see a mate in #12 on an Athlon 1.3 ghz
T-bird.

New position
8/8/ppPP4/kp1Pp1P1/1p2P1pb/1K1P4/P4Bpp/8 w - - 0 1

Analysis by Goliath Light 1.5:

1.d7 Bxf2
  -+  (-5.54)   Depth: 6/12   00:00:00
1.d7 Bxf2
  -+  (-5.54)   Depth: 6/12   00:00:00  6kN
1.d7 Bxf2
  -+  (-5.54)   Depth: 7/15   00:00:00  17kN
1.d7 Bxf2
  -+  (-5.97)   Depth: 7/17   00:00:00  20kN
1.d7 Bxf2 2.d8N g1Q 3.Nb7#
  -+  (-5.91)   Depth: 7/18   00:00:00  35kN
1.d7 Bxf2 2.d8N g1Q 3.Nb7#
  -+  (-5.91)   Depth: 8/27   00:00:00  90kN
1.d7 Bxf2 2.d8N g1Q 3.Nb7#
  -+  (-6.22)   Depth: 8/27   00:00:00  97kN
1.d7 g1Q 2.Bxg1 hxg1Q 3.Kc2 Qf2+ 4.Kd1 Qe1+ 5.Kc2
  -+  (-13.33)   Depth: 8/27   00:00:00  123kN
1.a3
  -+  (-13.19)   Depth: 8/27   00:00:00  190kN
1.a3 bxa3 2.d7 Bxf2 3.c7 g1Q 4.d8Q Qb1+ 5.Kxa3 Qxd3+ 6.Ka2
  -+  (-8.29)   Depth: 8/27   00:00:00  309kN
1.a3 bxa3 2.d7 Bxf2 3.c7 g1Q 4.d8Q Qb1+ 5.Kxa3 Qxd3+ 6.Ka2
  -+  (-8.29)   Depth: 9/27   00:00:00  346kN
1.a3 bxa3 2.d7 Bxf2 3.c7 g1Q 4.d8Q Qb1+ 5.Kxa3 Qxd3+ 6.Ka2
  -+  (-8.59)   Depth: 9/29   00:00:00  547kN
1.a3 bxa3 2.d7 Bxg5 3.c7 h1Q 4.Bg1 a2
  -+  (-8.57)   Depth: 9/29   00:00:00  558kN
1.Be1
  -+  (-8.44)   Depth: 9/29   00:00:00  759kN
1.Be1 Bxe1
  -+  (-7.41)   Depth: 9/29   00:00:00  779kN
1.Be1 Bxe1
  -+  (-7.41)   Depth: 10/29   00:00:00  779kN
1.Be1 Bxe1
  -+  (-7.02)   Depth: 10/29   00:00:00  827kN
1.Be1 Bxe1
  -+  (-6.21)   Depth: 10/29   00:00:01  831kN
1.Be1 Bxe1 2.d7 h1Q 3.d8N Qh7 4.g6 Qc7 5.Nb7+ Qxb7 6.cxb7 Bc3
  -+  (-4.31)   Depth: 10/29   00:00:01  890kN
1.Be1 Bxe1 2.d7 h1Q 3.d8N Qh7 4.g6 Qc7 5.Nb7+ Qxb7 6.cxb7 Bc3
  -+  (-4.31)   Depth: 11/29   00:00:01  1326kN
1.Be1 Bxe1 2.d7 h1Q 3.d8N Qh7 4.g6 Qc7 5.Nb7+ Qxb7 6.cxb7 Bc3
  -+  (-4.61)   Depth: 11/29   00:00:01  1463kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-5.05)   Depth: 11/29   00:00:04  6029kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-5.05)   Depth: 12/35   00:00:05  8560kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-4.74)   Depth: 12/35   00:00:06  9306kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-3.94)   Depth: 12/35   00:00:06  9353kN
1.Be1
  -+  (-3.94)   Depth: 12/35   00:00:06  9357kN
1.Be1
  -+  (-3.94)   Depth: 13/37   00:00:09  16184kN
1.Be1
  -+  (-3.64)   Depth: 13/37   00:00:10  18267kN
1.Be1
  -+  (-2.83)   Depth: 13/37   00:00:10  18516kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2
  -+  (-2.49)   Depth: 13/37   00:00:11  19333kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2
  -+  (-2.49)   Depth: 14/41   00:00:23  52965kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2
  -+  (-2.79)   Depth: 14/41   00:00:24  53854kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-4.61)   Depth: 14/41   00:02:15  242918kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-4.61)   Depth: 15/46   00:02:51  340649kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-4.61)   Depth: 15/46   00:02:51  340649kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-4.61)   Depth: 16/47   00:04:33  649064kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-4.31)   Depth: 16/47   00:04:51  692013kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2 4.Qxb6+ Kxb6 5.Kb2 Qc1+ 6.Kb3 Qb1#
  -+  (-3.51)   Depth: 16/47   00:04:54  696672kN
1.Be1 Bxe1 2.d7 h1Q 3.d8Q Bd2
  +-  (#12)   Depth: 16/47   00:05:41  769428kN

Regards
Jonas



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