Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Another Candidate for the Most Difficult Tactical Combo in the World

Author: Miguel A. Ballicora

Date: 14:45:04 02/08/02

Go up one level in this thread


On February 08, 2002 at 16:05:22, ALI MIRAFZALI wrote:

>Some of my previous posting on this Topic where solved By some programs;
>(Like Sjeng)(which I do not think is a good program) this time I am
>sure That no program in The WORLD will even Come close to Solving
>this.Theposition is from a game between an IM and a GM (with the GM winning).
>In my opinion the Position is More difficult than all of THE NOLOT famous
>test Positions.It should therefore serve an a benchmark.Needless to say finding
>such positions is no easy matter ;because it requires many hours (days;Months)
>of research.

It requires a couple of minutes for Gaviota on a PIV 1.4 Ghz.
I am not sure that it finds it for the right reasons, but that it is
irrelevant. It will play Rxg6+, in that case I am not sure this is such
a terrific test. Sorry to bust your bubble.

Regards,
Miguel

r1bq1r2/p2np1k1/3p2pR/3pP3/2pP4/5N2/PP2Q1P1/2KR1B2 w - - 0 1
+-----------------+
| r . b q . r . . |
| x . . n x . k . |
| . . . x . . x R |
| . . . x o . . . |
| . . x o . . . . |
| . . . . . N . . |
| o o . . Q . o . |
| . . K R . B . . |
+-----------------+

legal moves available = 36
       242   1:      0.0    -0.51  Qe2-e3   d6xe5    d4xe5
       509   2:      0.0    -0.68  Qe2-e3   Nd7-b8
      1583   3:      0.0    -0.51  Qe2-e3   d6xe5    d4xe5    <EMPTY>
                                   <-transp
      2632   4       0.0      :-(  Qe2-e3
      7871   4       0.1      :-(
      8681   4       0.1    -0.91  Qe2-e3   d6xe5    d4xe5    e7-e6
      8894   4:      0.1    -0.91  Qe2-e3   d6xe5    d4xe5    e7-e6
     11446   5       0.1    -0.85  Qe2-e3   d6xe5    d4xe5    Qd8-b6
                                   Qe3-d2
     26965   5       0.3    -0.70  Qe2-d2   d6xe5    d4xe5    Nd7-c5
                                   Kc1-b1   Bc8-f5   Kb1-a1
     52891   5:      0.5    -0.70  Qe2-d2   d6xe5    d4xe5    Nd7-c5
                                   Kc1-b1   Bc8-f5   Kb1-a1
     82450   6       0.8    -0.84  Qe2-d2   d6xe5    d4xe5    Ra8-b8
                                   Kc1-b1   Nd7-c5   <EMPTY>  <-transp
    169750   6       1.7    -0.82  e5xd6    e7xd6    Qe2-d2   Nd7-f6
                                   Kc1-b1   Bc8-f5   Kb1-a1   Kg7-g8
    207654   6:      2.0    -0.82  e5xd6    e7xd6    Qe2-d2   Nd7-f6
                                   Kc1-b1   Bc8-f5   Kb1-a1   Kg7-g8
    360474   7       3.3    -0.76  e5xd6    e7xd6    Qe2-d2   Nd7-f6
                                   Qd2-g5   Bc8-f5   Nf3-h4   Bf5-e4
                                   Nh4xg6   <EMPTY>  <-transp
    558989   7       5.3    -0.70  Qe2-e3   d6xe5    Rh6-h1   Rf8-h8
                                   Rh1xh8   Kg7xh8   Qe3-h6   Kh8-g8
                                   Qh6xg6   Kg8-h8   Qg6-h6   Kh8-g8
                                   d4xe5
    638597   7:      6.0    -0.70  Qe2-e3   d6xe5    Rh6-h1   Rf8-h8
                                   Rh1xh8   Kg7xh8   Qe3-h6   Kh8-g8
                                   Qh6xg6   Kg8-h8   Qg6-h6   Kh8-g8
                                   d4xe5
   1639723   8      16.4      :-)  Qe2-e3
   3809805   8      38.7    +0.00  Qe2-e3   d6xe5    Rh6xg6   Kg7xg6
                                   Qe3-g5   Kg6-f7   Qg5-h5   Kf7-g7
                                   Qh5-g5   Kg7-f7
   4395162   8:     44.1    +0.00  Qe2-e3   d6xe5    Rh6xg6   Kg7xg6
                                   Qe3-g5   Kg6-f7   Qg5-h5   Kf7-g7
                                   Qh5-g5   Kg7-f7
   5084664   9      51.0      :-(  Qe2-e3
  12767742   9     125.8    +0.04  Rh6xg6   Kg7xg6   Qe2-c2   Kg6-g7
                                   Nf3-g5   Nd7-f6   e5xf6    Kg7xf6
                                   Qc2-h7   e7-e5    d4xe5    d6xe5
                                   Ng5-e4   d5xe4    Qh7-h4   <EMPTY>
                                   <-transp
  13785366   9:    135.4    +0.04  Rh6xg6   Kg7xg6   Qe2-c2   Kg6-g7
                                   Nf3-g5   Nd7-f6   e5xf6    Kg7xf6
                                   Qc2-h7   e7-e5    d4xe5    d6xe5
                                   Ng5-e4   d5xe4    Qh7-h4   <EMPTY>
                                   <-transp


>[D]r1bq1r2/p2np1k1/3p2pR/3pP3/2pP4/5N2/PP2Q1P1/2KR1B2 w
>Important Note:the solution is not sensative to Extentions!!
>The solution as played in the actual game is:(in great style):19.Rxg6+!! Kxg6
>20.Nh4+ Kh6 21.Qe3+ Kh7 22.Bd3+!! cxb3 23.Qxd3+ Kh8 24.Rh1 Nf6 25.exf6 Qc7+
>26.Kb1 Rxf6 27.Nf3+ Kg8 28.Qh7+ Kf8 29.Qh8+ Kf7 30.Ng5+ Kg6.31.Qh5+ (1-0)
>What does your program say? For Comparison here is the line given by
>CM 8000 after 11 hours of furious Computation on a 500 MHZ Computer
>19.Qe3 Rxf3 20.gxf3 Nf8 21.Bh3 Qb6 22.exd6 Rb8 23.Rd2 Qxd6 (No Cigar).



This page took 0 seconds to execute

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

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.