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Subject: Re: Mate in 7 moves - diagram

Author: Eduard Nemeth

Date: 06:06:15 09/27/00

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On September 27, 2000 at 08:19:33, Mogens Larsen wrote:

>On September 27, 2000 at 04:45:38, Eduard Nemeth wrote:
>
>>[D]8/8/p3R3/1p5p/1P5p/6rp/5K1p/7k w - - 0 1
>
>Analysis by Gandalf 4.32f:
>
>1.Rxa6 Rg2+ 2.Kf3
>  -+  (-8.35)   Depth: 2   00:00:00
>1.Rxa6 Rg1 2.Kf3
>  -+  (-8.30)   Depth: 3   00:00:00
>1.Rxa6 Rg1 2.Rh6 Rg2+ 3.Kf3
>  -+  (-8.28)   Depth: 4   00:00:00
>1.Rxa6 Rg1 2.Rh6 Rg5 3.Kf3
>  -+  (-8.19)   Depth: 5   00:00:00  2kN
>1.Rxa6 Rg2+ 2.Kf3 Rg1 3.Ra2 Rb1 4.Rf2 Rxb4
>  -+  (-8.19)   Depth: 6   00:00:00  10kN
>1.Re1+
>  -+  (-8.15)   Depth: 6   00:00:00  10kN
>1.Re1+
>    (-0.87)   Depth: 7   00:00:00  13kN
>1.Re1+
>  -+  (-3.14)   Depth: 8   00:00:00  18kN
>1.Re1+
>  +-  (6.93)   Depth: 9   00:00:00  29kN
>1.Re1+ Rg1 2.Rf1 Rxf1+ 3.Kxf1 a5 4.bxa5 b4 5.a6 b3
>  +-  (#7)   Depth: 9   00:00:00  29kN
>
>
>Analysis by Crafty 17.13:
>
>1.Rxa6
>  -+  (-4.90)   Depth: 1/2   00:00:00
>1.Rxa6 Rd3
>  -+  (-4.94)   Depth: 2/5   00:00:00
>1.Rxa6 Rg2+ 2.Kf1 Rd2
>  -+  (-5.64)   Depth: 3/7   00:00:00
>1.Rxa6 Rg2+ 2.Kf1 Rd2
>  -+  (-5.24)   Depth: 4/8   00:00:00
>1.Rxa6 Rg1 2.Ra3 Rg2+ 3.Ke3
>  -+  (-4.80)   Depth: 4/8   00:00:00
>1.Rxa6 Rg1 2.Ra5 Rg2+ 3.Kf1 Rg5
>  -+  (-5.10)   Depth: 5/10   00:00:00
>1.Rxa6 Rg2+ 2.Kf1 Rg4 3.Rf6 Rxb4 4.Ke2
>  -+  (-5.65)   Depth: 6/13   00:00:00  11kN
>1.Rxa6 Rg2+ 2.Kf1 Rg4 3.Rf6 Rxb4 4.Rf3 Rb1+ 5.Ke2
>  -+  (-5.57)   Depth: 7/15   00:00:00  18kN
>1.Rxa6 Rg2+ 2.Kf1 Rg4 3.Rf6 Rxb4 4.Rf3 Rb1+ 5.Kf2 Rb2+ 6.Ke3
>  -+  (-5.47)   Depth: 8/15   00:00:00  23kN
>1.Re1+
>  -+  (-5.07)   Depth: 8/15   00:00:00  25kN
>1.Re1+ Rg1 2.Rf1 Rxf1+ 3.Kxf1 a5 4.bxa5 b4 5.a6 b3 6.a7 b2 7.a8Q#
>  +-  (#7)   Depth: 8/15   00:00:00  26kN
>
>Analysis by Fritz 6 Light:
>
>1.Rxa6 Rg2+ 2.Kf3
>  -+  (-4.97)   Depth: 1/3   00:00:00
>1.Rxa6 Rg2+ 2.Kf3
>  -+  (-4.97)   Depth: 2/5   00:00:00
>1.Rxa6 Rg2+ 2.Kf3 Rg1
>  -+  (-4.97)   Depth: 3/9   00:00:00
>1.Rxa6 Rg2+ 2.Kf3 Rg4 3.Ra1+ Rg1
>  -+  (-5.00)   Depth: 4/9   00:00:00  1kN
>1.Rxa6 Rg2+ 2.Kf3 Rg8 3.Rf6 Rg3+ 4.Kf2 Rg2+ 5.Kf3
>  -+  (-4.97)   Depth: 5/11   00:00:00  2kN
>1.Rxa6 Rg2+ 2.Kf3 Rg8 3.Ra5 Rf8+ 4.Ke3 Rf5
>  -+  (-5.06)   Depth: 6/15   00:00:00  7kN
>1.Rxa6 Rg2+ 2.Kf3 Rg8 3.Ra1+ Rg1 4.Ra5 Rf1+ 5.Ke3 Rf5
>  -+  (-5.06)   Depth: 7/17   00:00:00  17kN
>1.Rxa6 Rg2+ 2.Kf3 Rg8 3.Ra7 Rf8+ 4.Ke2 Rf4 5.Rh7 Rxb4
>  -+  (-5.12)   Depth: 8/16   00:00:00  41kN
>1.Re1+
>  -+  (-4.84)   Depth: 8/16   00:00:00  42kN
>1.Re1+ Rg1 2.Rf1 a5 3.bxa5 b4 4.a6 Rxf1+ 5.Kxf1 b3
>  -+  (-4.66)   Depth: 9/15   00:00:00  50kN
>1.Re1+--
>  -+  (-4.97)   Depth: 10/18   00:00:00  76kN
>1.Re1+
>  -+  (-4.97)   Depth: 10/18   00:00:00  76kN
>1.Re1+!
>  +-  (#7)   Depth: 11/14   00:00:00  134kN
>
>Best wishes...
>Mogens

Thanks for all analysis (Gandalf is good. Gandalf 4.32 I have shortly from
Gambit-Soft.)!

Yes, Fritz 6 Light and Fritz 6 old find this mate, bat not Fritz 6a (Engine
from 01.23.2000).

regards,
Eduard



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