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Subject: Re: Another "avoid move" test position

Author: Mark Young

Date: 17:45:34 02/25/00

On February 25, 2000 at 19:20:36, Gerrit Reubold wrote:

>Hi all,
>
>here is another "avoid move" test position: which program is the best in
>avoiding the trap Nxd4?
>The main variation is ... Nxd4? Nxd4 Bxd4 Rxd4 Qxd4 Nxd5 Qd2 Nxb4.
>Many captures, many forced moves in this varaition, however, may program Bringer
>has no chance to avoid Nxd4? in reasonable time.
>
>[D]1kr2n2/q4p1r/bbn1p2p/p2pPP1P/Pp1P4/1Pp1NN1Q/2P2BB1/3RR1K1 b - - 0 1
>
>(this is a from one of my human-human games, it seems to be relatively easy for
>humans to avoid Nxd4, because they get suspicious...)
>
>I tried several engines, best so far is Hiarcs 6, it avoids the trap in about 1
>min @ PII-300
>
>Greetings,
>Gerrit

Hiarcs 7.32 was by far the best program in seeing the danger of Nxd4??.

New position
1kr2n2/q4p1r/bbn1p2p/p2pPP1P/Pp1P4/1Pp1NN1Q/2P2BB1/3RR1K1 b - - 0 1

Analysis by Hiarcs 7.32:

1...Nc6xd4
  ³  (-0.62)   Depth: 1   00:00:00
1...Nc6xd4 2.Nf3xd4 Bb6xd4 3.Qh3-g3
  ³  (-0.65)   Depth: 2/7   00:00:00
1...Nc6xd4 2.Nf3xd4 Bb6xd4 3.Qh3-g3
  ³  (-0.65)   Depth: 3/9   00:00:00
1...Nc6xd4 2.Nf3xd4 Bb6xd4 3.Qh3-g3 Bd4-c5
  ³  (-0.59)   Depth: 4/13   00:00:00
1...Nc6xd4 2.Nf3xd4 Bb6xd4 3.Qh3-h4 Bd4-c5 4.Qh4-f4 Nf8-d7
  ³  (-0.59)   Depth: 5/15   00:00:01  14kN
1...Nc6xd4 2.Nf3xd4 Bb6xd4 3.Qh3-h4 Bd4-c5 4.Qh4-f4 Nf8-d7 5.Ne3-g4 Bc5xf2+
6.Qf4xf2 Qa7xf2+ 7.Ng4xf2
  µ  (-0.71)   Depth: 6/21   00:00:03  45kN
1...Nc6xd4 2.Nf3xd4 Bb6xd4 3.Qh3-h4 Bd4-c5
  µ  (-0.71)   Depth: 7/23   00:00:05  108kN
1...Nc6xd4 2.Nf3xd4
  ³  (-0.46)   Depth: 8/25   00:00:09  208kN
1...Nc6xd4 2.Nf3xd4 Bb6xd4 3.Rd1xd4 Qa7xd4 4.Qh3-g3 Qd4-d2 5.Re1-d1 Qd2-e2
6.Bg2-f3 Rh7-g7 7.Qg3xg7 Qe2xf3 8.Qg7xf7
  ±  (0.86)   Depth: 8/27   00:00:34  1063kN
1...Rh7-g7 2.f5-f6 Rg7-h7 3.Qh3-g4 Nf8-d7 4.Bf2-g3 Kb8-a8 5.Qg4-f4
  ²  (0.27)   Depth: 8/27   00:00:40  1224kN
1...Rh7-g7 2.f5-f6 Rg7-h7 3.Qh3-g4 Nf8-d7 4.Qg4-f4 Rc8-h8 5.Ne3-g4 Qa7-c7
  =  (0.14)   Depth: 9/27   00:02:28  3919kN

(Young, 25.02.2000)

Re: Another "avoid move" test position Victor Valenzia 21:56:34 02/26/00
Re: yet another "avoid move" test position Mike S. 09:27:44 02/26/00
- Re: yet another "avoid move" test position - TOO EASY Mark Young 14:13:31 02/26/00
  - Re: even another "avoid move" test position! Mike S. 16:08:36 02/26/00
    - Re: even another "avoid move" test position! blass uri 16:21:28 02/26/00
      - Re: The problem is to find Bxg6 and not to avoid gxh5 blass uri 16:26:54 02/26/00
        
        Re: I am not sure if it is a good problem blass uri 16:34:58 02/26/00
        
        Re: I am not sure if it is a good problem Mark Young 09:12:10 02/27/00
        
        Re: I am not sure if it is a good problem Mike S. 10:57:28 02/27/00
        
        Re: I am not sure if it is a good problem Mike S. 05:29:40 02/27/00
        
        Re: I am not sure if it is a good problem Jeremiah Penery 05:12:29 02/27/00
- Re: yet another "avoid move" test position blass uri 11:59:06 02/26/00
  - Re: yet another "avoid move" test position Mike S. 12:44:22 02/26/00

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