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Subject: Re: Junior 9 (endgame weakness) part 4

Author: Rick Hagen

Date: 05:26:49 01/09/05

Go up one level in this thread


On January 09, 2005 at 04:02:14, Kurt Utzinger wrote:

>[D]6k1/R7/6p1/4K3/5P2/1r5p/8/8 w - - 0 63
>Junior 9 vs Ruffian 2.1.0 (11) 40'/40
>Here an example where Junior 9 lost a drawish
>rook ending with 63.Ra2? instead of 63.Kf6!
>Kurt
>
>
>

6k1/R7/6p1/4K3/5P2/1r5p/8/8 w - - 0 1

Analysis by Junior 9: (256 MB) (EGTB 256 MB)

[...]

63.Ra2 Kg7 64.Ke4 Kf7 65.Ra7+ Kf6 66.Ra6+ Kg7 67.Ra7+ Kh6 68.Ra2
  µ  (-1.37)   Depth: 12   00:00:01  825kN, tb=241
63.Ra2 Kg7 64.Rh2 Kf7 65.Ra2 Rb7 66.Rh2 Rb5+ 67.Ke4 Rh5 68.Kf3
  -+  (-1.41)   Depth: 15   00:00:13  6946kN, tb=3562
63.Ra2 Kg7 64.Rh2 Kf7 65.Rh1 Rf3 66.Ke4 Rc3 67.f5 gxf5+ 68.Kxf5 Ke7
  -+  (-1.41)   Depth: 17   00:00:48  24390kN, tb=17533
63.Ra2 Kg7 64.Ke4 Kh6 65.f5 g5 66.Rf2 Rb4+ 67.Ke5 Rb5+ 68.Ke4 Kg7 69.Rh2 Rb4+
70.Kd5 g4 71.Ke6
  -+  (-1.49)   Depth: 19   00:01:48  67246kN, tb=61996
63.Ra2 Kg7 64.Ke4 Kh6 65.f5 g5 66.Rf2 Rb4+ 67.Ke5 Kg7 68.f6+ Kf7 69.Rh2 Rb5+
70.Ke4 g4
  -+  (-1.62)   Depth: 20   00:02:43  114200kN, tb=112431
63.Kf6 h2 64.Ra1 Rb2 65.f5 Kh7 66.fxg6+ Kh6 67.Ke5 Re2+
  µ  (-1.20)   Depth: 20   00:04:04  180936kN, tb=199918
63.Kf6 h2 64.Ra1 Rb2 65.Rh1 Rg2 66.f5 g5 67.Kg6 Kf8 68.f6 g4 69.Re1 Re2
  -+  (-1.41)   Depth: 21   00:04:55  242962kN, tb=263807
63.Kf6 h2 64.Ra1 Rb2 65.Rh1 Rg2 66.f5 g5 67.Kg6 g4 68.Rb1 Kf8 69.Rb8+ Ke7 70.f6+
Ke6 71.f7 Rf2 72.Re8+
  µ  (-1.37)   Depth: 22   00:06:01  307023kN, tb=364665
63.Kf6 h2 64.Ra1 Rb2 65.Rh1 Rg2 66.f5 g5 67.Kg6 Kf8 68.Ra1 Ra2 69.Rc1 Rc2 70.Ra1
  µ  (-1.33)   Depth: 23   00:07:48  420876kN, tb=540853

================================================

6k1/R7/6p1/4K3/5P2/1r5p/8/8 w - - 0 1

Analysis by Junior 9: (256 MB) (EGTB 512 MB)

[...]
1.Ra2 Kg7 2.Ke4 Kf7 3.Ra7+ Kf6 4.Ra6+ Kg7 5.Ra7+ Kh6 6.Ra2
  µ  (-1.37)   Depth: 12   00:00:00  825kN, tb=241
1.Ra2 Kg7 2.Rh2 Kf7 3.Ra2 Rb7 4.Rh2 Rb5+ 5.Ke4 Rh5 6.Kf3
  -+  (-1.41)   Depth: 15   00:00:03  6946kN, tb=3562
1.Ra2 Kg7 2.Rh2 Kf7 3.Rh1 Ke7 4.f5 gxf5 5.Kxf5 Rg3 6.Kf4
  -+  (-1.43)   Depth: 18   00:00:18  33662kN, tb=26111
1.Ra2 Kg7 2.Ke4 Kh6 3.Ra8 Kh5 4.Rg8 Kh4 5.Rxg6 h2 6.Rh6+ Kg3 7.Rg6+ Kf2 8.Rh6
Rb4+ 9.Kf5 Kg2
  -+  (-1.57)   Depth: 20   00:01:17  125292kN, tb=115804
1.Kf6 h2 2.Ra1 Rb2 3.Rh1 Rg2 4.f5 g5 5.Kg6 g4 6.Rb1 Kf8 7.Rb8+ Ke7 8.f6+ Ke6
9.f7 g3 10.Re8+
  µ  (-1.31)   Depth: 20   00:02:06  199063kN, tb=204028
1.Kf6 h2 2.Ra1 Rb2 3.Rh1 Rg2 4.f5 g5 5.Kg6 Kf8 6.f6 g4 7.Re1 Re2
  -+  (-1.41)   Depth: 21   00:02:20  217949kN, tb=237543
1.Kf6 h2 2.Ra1 Rb2 3.Rh1 Rg2 4.f5 g5 5.Kg6 g4 6.Rb1 Kf8 7.Rb8+ Ke7 8.f6+ Ke6
9.f7 Rf2 10.Re8+
  µ  (-1.37)   Depth: 22   00:03:19  300816kN, tb=347750
1.Kf6 h2 2.Ra1 Rb2 3.Rh1 Rg2 4.f5 g5 5.Kg6 Kf8 6.Ra1 Ra2 7.Rc1 Rc2 8.Ra1
  µ  (-1.33)   Depth: 23   00:04:55  428885kN, tb=531729
1.Kf6 h2 2.Ra1 Rb2 3.Rh1 Rg2 4.f5 g5 5.Kg6 Kf8 6.Ra1 Ra2 7.Rc1 Rc2 8.Ra1
  µ  (-1.33)   Depth: 24   00:08:01  645858kN, tb=822336





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