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Subject: Re: Engine Test

Author: Brian Katz

Date: 22:11:07 04/06/05

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On April 06, 2005 at 11:07:09, Rob Basham wrote:

>[D]2qrr1n1/3b1kp1/2pBpn1p/1p2PP2/p2P4/1BP5/P3Q1PP/4RRK1 w - - 0 1
>
>In 1913, Dr. Alekhine announced "mate in 10" and played
>Qh5+...!
>
>Ruffian 1.0.1 finds it in just 13 seconds and also ann. mate in 10...!
>
>P3-850


Hello, I am using an AMD Athlon XP 2600+   I Gig of DDR Sdram.
Fritz 8 found 1.Qh5+ within 7 seconds, and announces mate in 10 after just 9
seconds of calculations........As shown below.

New game,
2qrr1n1/3b1kp1/2pBpn1p/1p2PP2/p2P4/1BP5/P3Q1PP/4RRK1 w - - 0 1

Analysis by Fritz 8:

1.exf6 Nxf6 2.fxe6+ Bxe6 3.Bxe6+ Qxe6 4.Be5 Kg8 5.Qf2
  ±  (1.13)   Depth: 7/23   00:00:00  73kN
1.exf6 Nxf6 2.fxe6+ Bxe6 3.Bxe6+ Qxe6 4.Be5 Kg8 5.Bxf6 Qxe2 6.Rxe2 gxf6
  ±  (0.97)   Depth: 8/24   00:00:00  200kN
1.exf6 Nxf6 2.fxe6+ Bxe6 3.Bxe6+ Qxe6 4.Be5 Kg8 5.Bxf6 Qxe2 6.Rxe2 gxf6 7.Rxe8+
  ±  (0.97)   Depth: 9/26   00:00:00  559kN
1.exf6 Nxf6 2.fxe6+ Bxe6 3.Bxe6+ Qxe6 4.Be5 Kg8 5.Bxf6 Qxe2 6.Rxe2 gxf6 7.Rxe8+
Rxe8 8.Rxf6
  ±  (0.97)   Depth: 10/29   00:00:01  1347kN
1.exf6!
  ±  (1.25)   Depth: 11/32   00:00:03  3155kN
1.exf6 Nxf6 2.fxe6+ Bxe6 3.Rxf6+ gxf6 4.Qh5+ Kg7 5.Re3 Rxd6 6.Rg3+ Kf8 7.Qxh6+
Ke7 8.Rg7+ Bf7 9.Bxf7 Rf8 10.Qf4 Rh8
  ±  (1.31)   Depth: 11/32   00:00:04  3628kN
1.Qh5+!
  ±  (1.34)   Depth: 11/34   00:00:07  6526kN
1.Qh5+!
  +-  (1.50)   Depth: 11/34   00:00:07  6534kN
1.Qh5+!
  +-  (1.81)   Depth: 11/34   00:00:07  6542kN
1.Qh5+!
  +-  (2.44)   Depth: 11/34   00:00:07  6557kN
1.Qh5+ Nxh5 2.fxe6+ Kg6 3.Bc2+ Kg5 4.Rf5+ Kg6 5.Rf6+ Kg5 6.Rg6+ Kh4 7.Re4+ Nf4
  +-  (#10)   Depth: 11/41   00:00:09  8297kN
1.Qh5+ Nxh5 2.fxe6+ Kg6 3.Bc2+ Kg5 4.Rf5+ Kg6 5.Rf6+ Kg5 6.Rg6+ Kh4 7.Re4+ Nf4
  +-  (#10)   Depth: 11/41   00:00:09  8341kN

(Katz, Eatontown 07.04.2005)



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