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Subject: Re: Mate Search

Author: chandler yergin

Date: 15:58:17 11/25/04

Go up one level in this thread



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
8/5p1k/7P/7R/2pPp3/1nP5/1r3r1P/6RK b - - 0 1

Analysis by Shredder 8:

1...f5 2.Rg7+ Kh8 3.Rg1 f4
  -+  (-4.88)   Depth: 1/6   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 7/14   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00  24kN
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00  24kN
1...e3 2.Re1 Rfc2 3.Rf1 Rc1 4.Rxc1 Rxh2+ 5.Kxh2
  -+  (-5.95)   Depth: 8/8   00:00:00  24kN
1...e3 2.h3 Rh2#
  -+  (-6.03)   Depth: 8/18   00:00:00  38kN
1...e3 2.Re1 Rfc2 3.d5 Rxc3 4.Re5 Rd3 5.R1xe3 Rd1+ 6.Re1
  -+  (-6.04)   Depth: 9/16   00:00:00  59kN
1...e3 2.Re1 Rfc2 3.d5 Rc1 4.Rg1 Rxg1+ 5.Kxg1 Rb1+ 6.Kg2 e2 7.h3 e1Q
  -+  (-6.29)   Depth: 10/22   00:00:00  78kN
1...e3 2.Re1 Nd2 3.Rh3 Nf3 4.Rxe3 Rxh2+ 5.Rxh2 Rxh2#
  -+  (-6.79)   Depth: 10/22   00:00:00  109kN
1...e3 2.Re1 Nd2 3.Rh3 Nf3 4.Rxf3 Rxf3 5.Kg1 e2 6.d5 Kxh6
  -+  (-6.84)   Depth: 10/22   00:00:00  119kN
1...e3 2.Re1 Nd2 3.Rh3 Nf3 4.Rxf3 Rxf3 5.Kg1 Kxh6 6.Rb1
  -+  (-7.09)   Depth: 11/22   00:00:00  171kN
1...e3 2.Rg7+ Kh8 3.Re5 Rf1+ 4.Rg1 e2 5.Rxf1 exf1Q#
  -+  (-7.58)   Depth: 11/28   00:00:00  230kN
1...e3 2.Rg7+ Kh8 3.Re5 Rf1+ 4.Rg1 e2 5.h3 Kh7 6.Re8
  -+  (-7.83)   Depth: 12/28   00:00:01  340kN
1...e3 2.Rg7+ Kh8 3.Re5 Rf1+ 4.Rg1 e2 5.h4 Rbb1 6.Rxe2 Rxg1+ 7.Kh2 Kh7 8.Re7
Rbd1 9.Rxf7+ Kxh6
  -+  (-8.02)   Depth: 12/32   00:00:01  434kN
1...e3 2.Rg7+ Kh8 3.Re5 Rf1+ 4.Rg1 e2 5.h4 Rbb1 6.Rxe2 Rxg1+ 7.Kh2 Kh7 8.Re7
Rbd1 9.Rxf7+ Kxh6
  -+  (-8.14)   Depth: 13/31   00:00:01  647kN
1...e3 2.Rg7+ Kh8 3.Re5 Rf1+ 4.Rg1 e2 5.h4 Rbb1 6.Rxe2 Rxg1+ 7.Kh2 Kh7 8.Re7
Rbd1 9.Rxf7+ Kxh6 10.Rc7 Na5
  -+  (-8.05)   Depth: 14/37   00:00:02  1012kN
1...e3 2.Rg7+ Kh8 3.Re5 Rf1+ 4.Rg1 e2 5.h4 Rbb1 6.Rxe2 Rxg1+ 7.Kh2 Kh7 8.Re7
Rbd1 9.Rxf7+ Kxh6 10.Rc7 Na5 11.Kh3
  -+  (-8.19)   Depth: 15/34   00:00:03  1565kN, tb=2
1...Nd2 2.Re5 Nf3 3.Rxe4 Rxh2#
  -+  (-8.20)   Depth: 15/37   00:00:06  2535kN, tb=7
1...Nd2 2.Re5 Nf3 3.Rg7+ Kxh6 4.Rh7+ Kxh7 5.h3
  -+  (-8.55)   Depth: 15/37   00:00:06  2638kN, tb=7
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.d5 Nf3+ 7.Kh1 Rf1+ 8.Kg2 e2
9.Rf5 e1Q 10.Rxf7 Nxh2 11.Rxf1 Nxf1
  -+  (-10.99)   Depth: 15/38   00:00:11  5258kN, tb=14
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.d5 Nf3+ 7.Kh1 Rf1+ 8.Kg2 e2
9.Rf5 e1Q 10.Rxf3 Rxf3 11.d6 Qxc3 12.h3
  -+  (-11.24)   Depth: 16/34   00:00:12  6034kN, tb=15
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.d5 Nf3+ 7.Kh1 Rf1+ 8.Kg2 e2
9.Rf5 e1Q 10.Rxf3 Rxf3 11.h3 Qxc3
  -+  (-11.74)   Depth: 16/34   00:00:13  6240kN, tb=16
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.h3
e2 9.Kg2 Rf1 10.d5 e1Q 11.h4 Rg1+
  -+  (-16.53)   Depth: 16/41   00:00:15  7219kN, tb=28
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.h3
e2 9.d5 e1Q+ 10.Kg2 Qf2+ 11.Kh1 Rxh3#
  -+  (-16.78)   Depth: 17/36   00:00:17  8194kN, tb=39
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.h3
e2 9.Kh1 e1Q+ 10.Kg2 Qf2+ 11.Kh1 Rxh3#
  -+  (-17.28)   Depth: 17/38   00:00:18  8385kN, tb=39
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.d5
e2 9.Kg2 Rf6 10.d6 e1Q 11.d7 Rd6 12.h3 Rxd7
  -+  (-17.29)   Depth: 17/38   00:00:19  8974kN, tb=64
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.d5
e2 9.Kg2 Rf6 10.Kg1 e1Q+ 11.Kg2 Qxc3 12.d6 Rxd6
  -+  (-17.54)   Depth: 18/38   00:00:23  10740kN, tb=103
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.d5
e2 9.Kh1 e1Q+ 10.Kg2 Rxc3 11.d6
  -+  (-18.04)   Depth: 18/38   00:00:24  11194kN, tb=104
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.d5
e2 9.Kg2 Rf6 10.d6 e1Q 11.h4 Qxc3 12.d7 Qd2+ 13.Kh3
  -+  (-18.84)   Depth: 18/41   00:00:26  12541kN, tb=151
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.d5
e2 9.Kg2 Rf6 10.d6 e1Q 11.h3 Qf1+
  -+  (-19.09)   Depth: 19/40   00:00:31  14886kN, tb=217
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.d5
e2 9.Kg2 Rf6 10.d6 e1Q 11.Kh3 Qf1+
  -+  (-19.59)   Depth: 19/42   00:00:32  15380kN, tb=219
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.d5
e2 9.Kg2 Rf6 10.d6 e1Q 11.Kh3 Qf1+ 12.Kh4 Rh6+ 13.Kg4
  -+  (-#150)   Depth: 19/42   00:00:38  18396kN, tb=336
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.h3
e2 9.Kg2 Rf6 10.Kg1 e1Q+ 11.Kg2 Qf1+ 12.Kh2 Rf3 13.h4 Rh3#
  -+  (-#150)   Depth: 20/44   00:01:09  35227kN, tb=843
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.Kh1
Rf1+ 9.Kg2 Rf6 10.Kg3 e2 11.Kh4 e1Q+ 12.Kg5 Qf2 13.h3 Qf4+
  -+  (-#14)   Depth: 21/41   00:02:09  68447kN, tb=2122
1...Nd2 2.Rg7+ Kh8 3.h7 Rb1+ 4.Rg1 Rxg1+ 5.Kxg1 e3 6.Rh3 Nf3+ 7.Rxf3 Rxf3 8.Kh1
e2 9.Kg2 Rf6 10.h3 e1Q 11.d5 Qf1+ 12.Kh2 Rf3 13.h4 Rh3#
  -+  (-#13)   Depth: 22/43   00:03:17  105008kN, tb=4228

(Yergin, MyTown 25.11.2004)



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