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Subject: Re: Testposition- king attack

Author: Eelco de Groot

Date: 16:08:02 10/21/01

Go up one level in this thread


On October 21, 2001 at 17:57:10, Terry McCracken wrote:

>On October 21, 2001 at 17:53:03, Andrew Smith wrote:
>
>>I hope this diagram works...
>>
>>[D]r1bk3r/1pp2pp1/p2p1n1p/5q2/8/4BN2/PPPQ1PPP/3RR1K1 w - -
>>
>>How long does it take your program to find the strong move Bb6! ?

I think that is a nice challenge for one of Jeremiah Penery's modified Craftys
or a Chessmaster with extra high selectivity. But can they beat old Q5T? A
properly trained Rebel Q5T "T for Terminator" after having spent a few months in
a harsh trainingcamp in the Dutch mountains sees Bb6 in about 0.01 second. This
on a Celeron 500 Mhz. Approximately 1/100 of a second,that is if I assume that
every ply takes about three times longer than the previous one and seven plies
are reached in one second.

Thinking....

  +---+---+---+---+---+---+---+---+   -
8 | *R|   | *B| *K|   |   |   | *R|
  +---+---+---+---+---+---+---+---+  00:00:00      00:00:00
7 |   | *p| *p|   |   | *p| *p|   |
  +---+---+---+---+---+---+---+---+
6 | *p|   |   | *p|   | *N|   | *p|  Time
  +---+---+---+---+---+---+---+---+  Hash          512 Kb
5 |   |   |   |   |   | *Q|   |   |  Engine        Rebel Century 2.0
  +---+---+---+---+---+---+---+---+  Personality   "Q5T"
4 |   |   |   |   |   |   |   |   |
  +---+---+---+---+---+---+---+---+
3 |   |   |   |   | B | N |   |   |
  +---+---+---+---+---+---+---+---+
2 | p | p | p | Q |   | p | p | p |
  +---+---+---+---+---+---+---+---+
1 |   |   |   | R | R |   | K |   |
  +---+---+---+---+---+---+---+---+
    a   b   c   d   e   f   g   h

[D]r1bk3r/1pp2pp1/p2p1n1p/5q2/8/4BN2/PPPQ1PPP/3RR1K1 w - -

[Event ""]
[Site ""]
[Date "-9928.-54.-20"]
[Round ""]
[White ""]
[Black ""]
[Result "*"]
[BlackElo ""]
[WhiteElo ""]
[FEN "r1bk3r/1pp2pp1/p2p1n1p/5q2/8/4BN2/PPPQ1PPP/3RR1K1 w - - 0 1"]

1.*

00:00  01.00  -2.32   1.Bxh6 Rxh6
00:00  01.03  1.71   1.Bb6
00:00  02.00  0.32   1.Bb6 Be6
00:00  02.11  0.37   1.Nd4 Qd5 2.Bf4 Qxa2
00:00  03.00  0.01   1.Nd4 Qd5 2.Bf4 Re8 3.Rxe8+
00:00  03.01  0.01   1.Bb6
00:00  03.01  1.75   1.Bb6 Nd5 2.Qxd5 Qxd5
00:00  04.00  1.75   1.Bb6 Nd5 2.Qxd5 Qxd5 3.Bxc7+
00:00  05.00  1.75   1.Bb6 Nd5 2.Qxd5 Qxd5 3.Bxc7+ Kxc7
                       4.Rxd5  (0)

00:00  06.00  1.75   1.Bb6 Nd5 2.Qxd5 Qxd5 3.Bxc7+ Kxc7
                       4.Rxd5 Bd7  (0)

00:01  07.00  1.78   1.Bb6 Nd5 2.Nh4 Qh5 3.Qxd5 Qxd5
00:04  08.00  1.90   1.Bb6 Nd5 2.Qxd5 Qxd5 3.Rxd5 Be6
                       4.Rxd6+ Kc8  (3)

00:13  09.00  2.07   1.Bb6 Nd5 2.Ba5 b6
00:54  10.00  2.13   1.Bb6 cxb6 2.Qxd6+ Bd7 3.Qxb6+ Kc8
                       4.Re5 Qf4  (29)

02:44  11.00  2.15   1.Bb6 Nd5 2.Ba5 b6
11:13  12.00  2.36   1.Bb6 Nd5 2.Ba5 b6

Positions                :     517.422.149
Nodes per second         :         210.505




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