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Subject: Re: Mate Search - Shredder 8 Gambit

Author: m.d.hurd

Date: 14:23:31 11/24/04

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On November 24, 2004 at 08:54:45, Jason Kent wrote:

>How long does it take your engine to find a mate in 13?
>
>[D]8/5p1k/7P/7R/2pPp3/1nP5/1r3r1P/6RK b - - 0 54
>8/5p1k/7P/7R/2pPp3/1nP5/1r3r1P/6RK b - - 0 54
>
>CM 10th Edition Steadfast finds it in 2:14
>
>10thEd_SteadF  WB1 124 MB:
>3001   00:00  2.59   e3 Rg7+ Kh8 Rg1 f5
>4001   00:00  2.70   e3 d5 Rbd2 Rg7+ Kh8
>5001   00:00  2.76   e3 Rg7+ Kh8 Re5 Rxh2+ Kg1 Rxh6 Rxf7 Kg8
>6001   00:00  2.84   e3 Rg7+ Kh8 Re5 Rf1+ Rg1 e2 d5 Kh7 Re8 Rxg1+ Kxg1 Kxh6
>7001   00:01  4.26   e3 Re1 Rbc2 Rg1 Rxc3 Rg7+ Kh8 Re5 Rc1+ Rg1 Rxg1+ Kxg1
>8002   00:02  6.64   e3 Re1 Nd2 Rh3 Nf3 Rxf3 Rxf3 Kg1 Rd2 Rb1 Kxh6
>8002   00:02  6.75   Nd2 Rg7+ Kh8 h7 Rb1+ Rg1 Rxg1+ Kxg1 e3 Rh3 Rf1+ Kg2 e2 Re3
>e1Q Rxe1 Rxe1
>9002   00:03  9.59   Nd2 Rg7+ Kh8 h7 Rb1+ Rg1 Rxg1+ Kxg1 e3 Rh3 Nf3+ Rxf3 Rxf3
>Kg2 e2 Kxf3 e1Q d5 Qxc3+ Ke4 Kxh7
>10002   00:05  10.24   Nd2 Rg7+ Kh8 h7 Rb1+ Rg1 Rxg1+ Kxg1 e3 Rh3 Nf3+ Rxf3 Rxf3
>Kg2 e2 Kxf3 e1Q Kf4 Qxc3 Ke4 Qe1+ Kf4 Kxh7
>11003   00:09  13.28   Nd2 Rg7+ Kh8 h7 Rb1+ Rg1 Rxg1+ Kxg1 e3 Rh3 Nf3+ Rxf3 Rxf3
>Kg2 Rf6 Kg3 e2 Kg4 e1Q Kg5
>12003   00:16  14.32   Nd2 Rg7+ Kh8 h7 Rb1+ Rg1 Rxg1+ Kxg1 e3 Rh3 Nf3+ Rxf3 Rxf3
>Kg2 Rf6 Kg3 e2 Kg4 e1Q Kg5 Rg6+ Kf4 Qxc3
>13003   00:31  14.66   Nd2 Rg7+ Kh8 h7 Rb1+ Rg1 Rxg1+ Kxg1 e3 Rh3 Nf3+ Rxf3 Rxf3
>Kg2 Rf6 Kg3 e2 Kg4 e1Q Kg5 Rh6 Kf5 Qxc3
>14004   02:14  M13  Nd2 Rg7+ Kh8 h7 Rb1+ Rg1 Rxg1+ Kxg1 e3 Rh3 Nf3+ Rxf3 Rxf3
>Kg2 Rf6 Kg3 e2 Kg4 e1Q Kg5 Qf2 Kh5 Qxh2+ Kg4 Rf4+ Kg5 Qh4+


New game, Blitz:5' UK
8/5p1k/7P/7R/2pPp3/1nP5/1r3r1P/6RK b - - 0 1

Analysis by Shredder 8 Gambit:

1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.Kg2
Rf6 9.Kh3 e2 10.Kh4 e1Q+ 11.Kg5 Qf2 12.Kh5 Qf4 13.d5 Rf5#
-+  (-#13)    Depth: 21/45   00:01:45  61377kN
(Hurd, UK 24.11.2004)

Athlon 2400 5 man TB

Regards

Mike



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