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Subject: Re: Mate in one revisited

Author: Uri Blass

Date: 05:24:15 10/01/05

Go up one level in this thread


On October 01, 2005 at 08:13:00, Michael Diosi wrote:

>Hello,
>
>This has been posted before in both the Winboard and Exactachess fora. It is a
>mate in one. How long does an engine take to realise this? Some are instant,
>others (like Fritz 9) take hours. The problem is to do with what an engine looks
>at when it analyzes a position. Captures or looking for mate first.
>
>[d] 8/8/pppppppK/NBBR1NRp/nbbrqnrP/PPPPPPPk/8/6Q1 w - - 0 1
>
>
>Best,
>
>Michael

Here is some analysis by Shredder9 and by Fruit2.2
It is clear that Fruit2.2 extends too much and can be improved.New game,
8/8/pppppppK/NBBR1NRp/nbbrqnrP/PPPPPPPk/8/6Q1 w - - 0 1

Analysis by Shredder 9 UCI:

1.dxe4
  +-  (1.60)   Depth: 1/1   00:00:00
1.dxe4
  +-  (7.17)   Depth: 1/1   00:00:00
1.dxe4 Rxd5 2.exd5 axb5 3.axb4 bxa5 4.exf4 exf5 5.bxc4 fxg5 6.fxg4 dxc5 7.Kxg5
cxd5 8.cxd5 Nxc3
  +-  (10.85)   Depth: 1/30   00:00:01
1.Qh1#
  +-  (#1)   Depth: 1/30   00:00:02
1.Qh1#
  +-  (#1)   Depth: 1/30   00:00:02

(,  01.10.2005)



New game,
8/8/pppppppK/NBBR1NRp/nbbrqnrP/PPPPPPPk/8/6Q1 w - - 0 1

Analysis by Fruit 2.2:

1.Qh1#
  +-  (#1)   Depth: 1/33   00:04:03
1.Qh1#
  +-  (#1)   Depth: 2/33   00:04:03
1.Qh1#
  +-  (#1)   Depth: 3/33   00:04:03
1.Qh1#
  +-  (#1)   Depth: 4/33   00:04:03
1.Qh1#
  +-  (#1)   Depth: 5/33   00:04:03
1.Qh1#
  +-  (#1)   Depth: 6/33   00:04:03  253169kN
1.Qh1#
  +-  (#1)   Depth: 7/33   00:04:03  253169kN
1.Qh1#
  +-  (#1)   Depth: 8/33   00:04:04  253169kN
1.Qh1#
  +-  (#1)   Depth: 9/33   00:04:04  253169kN
1.Qh1#
  +-  (#1)   Depth: 10/33   00:04:04  253170kN
1.Qh1#
  +-  (#1)   Depth: 11/33   00:04:04  253170kN
1.Qh1#
  +-  (#1)   Depth: 12/33   00:04:04  253170kN
1.Qh1#
  +-  (#1)   Depth: 13/33   00:04:04  253170kN
1.Qh1#
  +-  (#1)   Depth: 14/33   00:04:04  253170kN
1.Qh1#
  +-  (#1)   Depth: 15/33   00:04:04  253170kN
1.Qh1#
  +-  (#1)   Depth: 16/33   00:04:05  253171kN
1.Qh1#
  +-  (#1)   Depth: 17/33   00:04:05  253171kN
1.Qh1#
  +-  (#1)   Depth: 18/33   00:04:05  253172kN
1.Qh1#
  +-  (#1)   Depth: 19/33   00:04:05  253173kN
1.Qh1#
  +-  (#1)   Depth: 20/33   00:04:05  253174kN
1.Qh1#
  +-  (#1)   Depth: 21/33   00:04:05  253176kN
1.Qh1#
  +-  (#1)   Depth: 22/33   00:04:05  253178kN
1.Qh1#
  +-  (#1)   Depth: 23/33   00:04:06  253182kN
1.Qh1#
  +-  (#1)   Depth: 24/33   00:04:06  253186kN
1.Qh1#
  +-  (#1)   Depth: 25/33   00:04:06  253195kN
1.Qh1#
  +-  (#1)   Depth: 26/33   00:04:06  253203kN
1.Qh1#
  +-  (#1)   Depth: 27/33   00:04:06  253219kN
1.Qh1#
  +-  (#1)   Depth: 28/33   00:04:06  253236kN
1.Qh1#
  +-  (#1)   Depth: 29/33   00:04:06  253269kN
1.Qh1#
  +-  (#1)   Depth: 30/33   00:04:07  253301kN
1.Qh1#
  +-  (#1)   Depth: 31/33   00:04:07  253367kN
1.Qh1#
  +-  (#1)   Depth: 32/33   00:04:07  253432kN
1.Qh1#
  +-  (#1)   Depth: 33/33   00:04:07  253564kN
1.Qh1#
  +-  (#1)   Depth: 34/33   00:04:08  253695kN
1.Qh1#
  +-  (#1)   Depth: 35/33   00:04:08  253957kN
1.Qh1#
  +-  (#1)   Depth: 36/33   00:04:08  254219kN
1.Qh1#
  +-  (#1)   Depth: 37/33   00:04:09  254743kN
1.Qh1#
  +-  (#1)   Depth: 38/33   00:04:10  255268kN
1.Qh1#
  +-  (#1)   Depth: 39/33   00:04:11  256316kN
1.Qh1#
  +-  (#1)   Depth: 40/33   00:04:13  257365kN
1.Qh1#
  +-  (#1)   Depth: 41/33   00:04:14  259462kN
1.Qh1#
  +-  (#1)   Depth: 42/33   00:04:16  261559kN
1.Qh1#
  +-  (#1)   Depth: 43/33   00:04:18  265754kN
1.Qh1#
  +-  (#1)   Depth: 44/33   00:04:19  269948kN
1.Qh1#
  +-  (#1)   Depth: 45/33   00:04:22  278337kN
1.Qh1#
  +-  (#1)   Depth: 46/33   00:04:27  286725kN
1.Qh1#
  +-  (#1)   Depth: 47/33   00:04:36  303503kN
1.Qh1#
  +-  (#1)   Depth: 48/33   00:04:46  320280kN

(,  01.10.2005)




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