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Subject: Re: White to Move !!

Author: Ernst Walet

Date: 10:23:56 10/28/02

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On October 26, 2002 at 13:09:03, Terry Ripple wrote:

>On October 26, 2002 at 11:35:18, Mustafa wrote:
>
>>here chess tiger 14 played a strong move it sacrificed the rook to get the win
>>here it's the position can ur program find this.
>>[D]4r3/3brk1p/5pp1/1p1p4/p1qP1NPP/2P1RP2/1PQ3K1/4R3 w - - 0 35
>>
>>Chess Tiger 14 v's Chessica 2
>-----------------------------
>Using only a AMD K6-2, 266 Mhz, 64 Ram! Hiarcs 8 finds it using such a slow pc!
>
>New position
>4r3/3brk1p/5pp1/1p1p4/p1qP1NPP/2P1RP2/1PQ3K1/4R3 w - - 0 1
>
>Analysis by Hiarcs 8:
>
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7
>  ²  (0.29)   depth: 1   00:00:00
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7
>  ²  (0.29)   depth: 2/10   00:00:00
>1.Rxe7+ Rxe7
>  ²  (0.54)   depth: 3/11   00:00:00
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 a3 4.bxa3
>  ±  (1.07)   depth: 3/16   00:00:00
>1.Rxe7+ Rxe7
>  ±  (1.35)   depth: 4/16   00:00:00
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 gxh5 4.Qxh7+
>  +-  (1.53)   depth: 4/20   00:00:00
>1.Rxe7+ Rxe7
>  ±  (1.27)   depth: 5/20   00:00:00  5kN
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8
>  ±  (1.00)   depth: 5/21   00:00:00  11kN
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kg1 a3 5.bxa3
>  ±  (1.23)   depth: 6/24   00:00:01  27kN
>1.Rxe7+ Rxe7
>  ±  (0.98)   depth: 7/24   00:00:02  62kN
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kf2 b4 5.Qe2+ Qxe2+ 6.Kxe2 a3 7.hxg6 hxg6
>8.bxa3 bxa3 9.Nxd5+ Ke6
>  ²  (0.57)   depth: 7/29   00:00:04  102kN
>1.Rxe7+ Rxe7
>  ²  (0.32)   depth: 8/29   00:00:10  269kN
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Qc1 Kf7 5.Qb1 Kg7
>  ²  (0.31)   depth: 8/30   00:00:11  296kN
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kf2 b4 5.Qe2+ Qxe2+ 6.Kxe2 a3 7.bxa3 Bb5+
>8.Ke3 bxa3 9.Nxd5+ Ke6
>  ²  (0.41)   depth: 9/30   00:00:29  760kN
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kf2 b4 5.Qe2+ Qxe2+ 6.Kxe2 a3 7.bxa3 bxa3
>8.Nxd5+ Ke6 9.Nc7+ Kd7
>  ²  (0.55)   depth: 10/32   00:01:15  2003kN
>1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kf2 b4 5.Qe2+ Qxe2+ 6.Kxe2 a3 7.bxa3 bxa3
>8.Nxd5+ Kf7 9.Nb4 Bb5+ 10.Kd2
>  ²  (0.48)   depth: 11/35   00:03:17  5261kN
>1.h5 Rxe3
>  ±  (0.80)   depth: 11/37   00:05:41  8806kN
>1.h5 Rxe3 2.hxg6+ Kg7 3.gxh7 f5 4.Rxe3 Rxe3 5.gxf5 Re8 6.f6+ Kxf6 7.Qg6+ Ke7
>8.Qg7+ Kd6 9.h8Q Rxh8 10.Qxh8
>  +-  (1.51)   depth: 11/37   00:07:13  10867kN
>1.h5 Rxe3 2.hxg6+ Kg7 3.gxh7 f5 4.Rxe3 Rxe3 5.gxf5 Re8 6.f6+ Kxf6
>  +-  (1.51)   depth: 12/41   00:11:24  16416kN
>
>Regards,
>      Terry


And for comparison on a Celeron 1200:

New game
4r3/3brk1p/5pp1/1p1p4/p1qP1NPP/2P1RP2/1PQ3K1/4R3 w - - 0 1

Analysis by Hiarcs 8:

1.Rxe7+ Rxe7 2.Rxe7+ Kxe7
  ²  (0.29)   Depth: 1   00:00:00
1.Rxe7+ Rxe7
  ±  (1.35)   Depth: 4/16   00:00:00
1.Rxe7+ Rxe7
  ±  (1.35)   Depth: 4/16   00:00:00
1.Rxe7+ Rxe7
  ±  (1.35)   Depth: 4/16   00:00:00
1.Rxe7+ Rxe7
  ±  (1.35)   Depth: 4/16   00:00:00
1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 gxh5 4.Qxh7+
  +-  (1.53)   Depth: 4/20   00:00:00
1.Rxe7+ Rxe7
  ±  (1.27)   Depth: 5/20   00:00:00  5kN
1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8
  ±  (1.00)   Depth: 5/21   00:00:00  11kN
1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kg1 a3 5.bxa3
  ±  (1.23)   Depth: 6/24   00:00:00  27kN
1.Rxe7+ Rxe7
  ±  (0.98)   Depth: 7/24   00:00:00  62kN
1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kf2 b4 5.Qe2+ Qxe2+ 6.Kxe2 a3 7.hxg6 hxg6
8.bxa3 bxa3 9.Nxd5+ Ke6
  ²  (0.57)   Depth: 7/29   00:00:00  102kN
1.Rxe7+ Rxe7
  ²  (0.32)   Depth: 8/29   00:00:02  269kN
1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Qc1 Kf7 5.Qb1 Kg7
  ²  (0.31)   Depth: 8/30   00:00:02  296kN
1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kf2 b4 5.Qe2+ Qxe2+ 6.Kxe2 a3 7.bxa3 Bb5+
8.Ke3 bxa3 9.Nxd5+ Ke6
  ²  (0.41)   Depth: 9/30   00:00:05  760kN
1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kf2 b4 5.Qe2+ Qxe2+ 6.Kxe2 a3 7.bxa3 bxa3
8.Nxd5+ Ke6 9.Nc7+ Kd7
  ²  (0.55)   Depth: 10/32   00:00:14  2001kN
1.Rxe7+ Rxe7 2.Rxe7+ Kxe7 3.h5 Be8 4.Kf2 b4 5.Qe2+ Qxe2+ 6.Kxe2 a3 7.bxa3 bxa3
8.Nxd5+ Kf7 9.Nb4 Bb5+ 10.Kd2
  ²  (0.48)   Depth: 11/35   00:00:36  5188kN
1.h5 Rxe3
  ±  (0.80)   Depth: 11/37   00:00:54  7469kN
1.h5 Rxe3 2.hxg6+ Kg7 3.gxh7 f5 4.Rxe3 Rxe3 5.gxf5 Kh8 6.f6 Be8 7.Qd2
  +-  (1.41)   Depth: 11/37   00:01:09  9285kN
1.h5 Rxe3 2.hxg6+ Kg7 3.gxh7 f5 4.Rxe3 Rxe3 5.gxf5 Re8 6.f6+ Kxf6
  +-  (1.51)   Depth: 12/42   00:01:51  14157kN

(Celeron 1.2GHz, 512MB hash, 3, 4 and 5 piece EGTB's 28.10.2002)

Ernst.



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