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Subject: Hard position for Rybka

Author: Will Singleton

Date: 20:11:29 12/13/05

[d]7R/6p1/2R3kp/8/2PbN3/p6P/1q3PK1/8 b - - bm Bf6

Amateur on p4 2.8ghz:

13 211 3568 14761409 Kf5 Ng3 Kg5 Rf8 Bf6 Ne4 Kh4 Nxf6 a2 Nh7 Qb1 Rf4
13 506 6832 28742005 Bf6 Ra6 Qb7 Rxa3 Qxe4 Kg1 Qxc4 Ra8 Bd4 Ra6
14 510 10303 43789766 Bf6 Ra6 Qb7 Rxa3 Qxe4 Rf3

Many progs take about a minute (give or take) to find Bf6, with a +3
or greater score.  Amateur is typically optimistic, with a +5.

Rybka, however, can't seem to find it at all, at least on my system.
This might be an indicator of some pruning mechanism at work.

Will

Re: Hard position for Rybka Aaron Gordon 22:28:56 12/13/05
- Re: Hard position for Rybka Aaron Gordon 23:24:22 12/13/05
  - Aaron questions K. Burcham 00:32:24 12/14/05
    - Re: Aaron questions Aaron Gordon 01:33:20 12/14/05
      - 4 x cores K. Burcham 03:06:17 12/14/05
        
        Re: 4 x cores Aaron Gordon 05:47:22 12/14/05

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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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