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Subject: Re: Avoid 1.h7 (LG 2000 v3.9 ok)

Author: Kurt Utzinger

Date: 23:27:58 02/12/05

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On February 12, 2005 at 22:33:35, Rick Hagen wrote:

>
>[D] 3R2nk/r5p1/6PP/3NK3/8/8/8/8 w - - 0 2
>
>From the game Kramnik-Krasenkov (Wijk aan Zee 2003)
>The obvious 1.h7 leads to a draw (perpetual check with rook)
>Kramnik played Ne3 btw, and won.
>Engines that see the draw after h7 rather fast are Goliath Light 1.5
>and Anaconda 1.0
>Most engines have difficulties seeing the "crazy rook" concept.
>How does your engine(s) handle this?
>
>Rick



Neue Partie, 120'/40+60'/20+30'
3R2nk/r5p1/6PP/3NK3/8/8/8/8 w - - 0 1

Analysis by Little Goliath 2000 v3.9:

2.h7 Te7+ 3.Kf5 Te5+ 4.Kf4 Te4+ 5.Kf3 Tf4+ 6.Kg3 Tf3+ 7.Kg2 Tf2+ 8.Kg1 Tf1+
9.Kxf1
  +-  (6.85)   Tiefe: 6/11   00:00:00  5kN
  =  (0.00)   Tiefe: 11/24   00:00:00  1100kN
2.hxg7+ Kxg7 3.Td6 Se7 4.Sxe7 Txe7+ 5.Kf5 Tb7 6.Td5 Ta7 7.Tc5 Ta2 8.Tc7+ Kf8
  ²  (0.28)   Tiefe: 11/24   00:00:01  1657kN
  ±  (1.18)   Tiefe: 11/28   00:00:01  2533kN
2.Td6 gxh6
  +-  (1.49)   Tiefe: 11/28   00:00:01  2562kN
  +-  (1.48)   Tiefe: 11/28   00:00:02  2806kN
2.Sf4 gxh6 3.Se6 Ta5+ 4.Kf4 Ta4+ 5.Kf3 Ta3+ 6.Ke2 Ta6 7.Te8 h5
  +-  (1.65)   Tiefe: 11/29   00:00:02  3690kN
  +-  (1.88)   Tiefe: 11/29   00:00:03  4557kN
2.Sb4 gxh6 3.Sc6 Tg7 4.Kf5
  +-  (2.20)   Tiefe: 11/29   00:00:03  5055kN
  +-  (2.19)   Tiefe: 11/29   00:00:03  5514kN
2.Tb8 gxh6 3.Sf6 Ta5+ 4.Kd4 Ta4+ 5.Kd5 Ta5+ 6.Kc4 Kg7 7.Sxg8 Kxg6 8.Se7+ Kg5
9.Tb2 h5 10.Th2 Kf4 11.Sc6 Ta6 12.Kd5
  +-  (2.36)   Tiefe: 11/29   00:00:05  7218kN
  +-  (2.57)   Tiefe: 12/35   00:00:08  13356kN
2.Kf5 gxh6 3.Sf6 Ta5+ 4.Kf4 Ta4+ 5.Ke5 Ta5+ 6.Kd4 Ta4+ 7.Kc5 Kg7 8.Sxg8 Kxg6
9.Se7+ Kg5 10.Tg8+ Kf4 11.Sd5+ Kf3 12.Tf8+ Kg3 13.Th8
  +-  (2.73)   Tiefe: 12/35   00:00:11  17077kN
  +-  (2.60)   Tiefe: 14/35   00:00:19  31282kN

(Utzinger, MyTown 13.02.2005)




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