Test position WCCC17 Rybka-Junior

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Yar
Posts: 298
Joined: Wed Mar 08, 2006 9:00 pm
Location: Moscow, Russia

Test position WCCC17 Rybka-Junior

Post by Yar »

Hello,

How long does it take for your engine to find Nb4 ?
[d] 2r5/2q5/6pk/4p3/2P1Pp2/p2Q1PbP/r1N3P1/1RR4K w - - 1 43

With best regards,
Yar
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bob
Posts: 20943
Joined: Mon Feb 27, 2006 7:30 pm
Location: Birmingham, AL

Re: Test position WCCC17 Rybka-Junior

Post by bob »

Yar wrote:Hello,

How long does it take for your engine to find Nb4 ?
[d] 2r5/2q5/6pk/4p3/2P1Pp2/p2Q1PbP/r1N3P1/1RR4K w - - 1 43

With best regards,
Yar
2 minutes on my 8-core box. Takes that long for Nxa3 to fail low. Nb4 is always high up the list but Nxa3 has to fail first...
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PauloSoare
Posts: 1335
Joined: Thu Mar 09, 2006 5:30 am
Location: Cabo Frio, Brasil

Re: Test position WCCC17 Rybka-Junior

Post by PauloSoare »

After 43. Nb4, it´s 43 ... Rb2 a draw?
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rightrook
Posts: 1452
Joined: Wed Mar 08, 2006 8:45 pm

Re: Test position WCCC17 Rybka-Junior

Post by rightrook »

Hiarcs 11.2 takes just 3 seconds to find the move..

Compaq Pesario...AMD 64 Athlon

regards

Robert
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michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: Test position WCCC17 Rybka-Junior

Post by michiguel »

rightrook wrote:Hiarcs 11.2 takes just 3 seconds to find the move..

Compaq Pesario...AMD 64 Athlon

regards

Robert
Gaviota sees it immediately (0.1 seconds, ply 4) and it does changes its mind at least for 10 min. I do not think there is anything special about this move

Miguel.

Code: Select all

         8   1       0.0    +0.56  22.Nxa3
        37   1       0.0    +0.62  22.Rb4
       103   1:      0.0    +0.62  22.Rb4
       166   2       0.0      :-(  22.Rb4
       499   2       0.0      :-(  
       540   2       0.0    -0.01  22.Rb4 Rd8
       848   2       0.0    -0.00  22.Nb4 Rd8 23.Qxd8 Qxd8 24.Nxa2
      1038   2:      0.0    -0.00  22.Nb4 Rd8 23.Qxd8 Qxd8 24.Nxa2
      1191   3       0.0    +0.10  22.Nb4 Rd8 23.Nd5
      1864   3       0.0    +0.19  22.Rb4 Rd8 23.Rb7 Rxd3 24.Rxc7
      2877   3       0.0    +0.20  22.Nxa3 Rd8 23.Nb5
      3531   3:      0.0    +0.20  22.Nxa3 Rd8 23.Nb5
      4584   4       0.0    +0.15  22.Nxa3 Rd8 23.Nb5 Qb6
      7993   4       0.1    +0.34  22.Rb4 Qd8 23.Qxd8 Rxd8 24.Rb6
     11237   4       0.1    +0.45  22.Nb4 Rd8 23.Qb3 Rad2 24.Qxa3
     14093   4:      0.1    +0.45  22.Nb4 Rd8 23.Qb3 Rad2 24.Qxa3
     18743   5       0.2    +0.72  22.Nb4 Rd8 23.Nd5 Qc5 24.Rc2 Rxc2
                                   25.Qxc2
     26308   5:      0.2    +0.72  22.Nb4 Rd8 23.Nd5 Qc5 24.Rc2 Rxc2
                                   25.Qxc2
     40622   6       0.3    +0.72  22.Nb4 Rd8 23.Nd5 Qc5 24.Rc2 Rxc2
                                   25.Qxc2
     51481   6:      0.4    +0.72  22.Nb4 Rd8 23.Nd5 Qc5 24.Rc2 Rxc2
                                   25.Qxc2
     90568   7       0.7    +0.95  22.Nb4 Rd8 23.Qc3 Rb2 24.Rxb2 axb2
                                   25.Qxb2 Kh7
    131651   7:      1.0    +0.95  22.Nb4 Rd8 23.Qc3 Rb2 24.Rxb2 axb2
                                   25.Qxb2 Kh7
    382168   8       2.3    +0.95  22.Nb4 Rf2 23.Qxa3 Qc5 24.Rb2 Rxb2
                                   25.Qxb2 Rb8 26.Nd3 Rxb2 27.Nxc5
    465695   8:      2.6    +0.95  22.Nb4 Rf2 23.Qxa3 Qc5 24.Rb2 Rxb2
                                   25.Qxb2 Rb8 26.Nd3 Rxb2 27.Nxc5
    863270   9       3.7    +0.74  22.Nb4 Rb2 23.Qxa3 Rxb1 24.Rxb1 Qxc4
                                   25.Qa7 Qc1+ 26.Rxc1 Rxc1+ 27.Qg1 Rxg1+
                                   28.Kxg1 Kg5 29.Nd5
   1671432   9:      6.1    +0.74  22.Nb4 Rb2 23.Qxa3 Rxb1 24.Rxb1 Qxc4
                                   25.Qa7 Qc1+ 26.Rxc1 Rxc1+ 27.Qg1 Rxg1+
                                   28.Kxg1 Kg5 29.Nd5
   5622804  10      18.7    +0.71  22.Nb4 Rf2 23.Qc3 a2 24.Ra1 Ra8 25.Rd1
                                   Re2 26.Nd5 Qg7 27.c5
   8020215  10:     25.9    +0.71  22.Nb4 Rf2 23.Qc3 a2 24.Ra1 Ra8 25.Rd1
                                   Re2 26.Nd5 Qg7 27.c5
  12332667  11      38.7    +0.73  22.Nb4 Rf2 23.Qxa3 Qc5 24.Rg1 Rd2
                                   25.Ra1 Bf2 26.Rgc1 Bd4 27.Rab1
  16568310  11:     51.1    +0.73  22.Nb4 Rf2 23.Qxa3 Qc5 24.Rg1 Rd2
                                   25.Ra1 Bf2 26.Rgc1 Bd4 27.Rab1
  32404052  12     100.0    +0.49  22.Nb4 Rf2 23.Qxa3 Qc5 24.Rg1 Rd2
                                   25.Ra1 Bf2 26.Qc3 Qd4 27.Qxd4 Bxd4
  74589885  12:    223.1    +0.49  22.Nb4 Rf2 23.Qxa3 Qc5 24.Rg1 Rd2
                                   25.Ra1 Bf2 26.Qc3 Qd4 27.Qxd4 Bxd4
 140957502  13     415.3    +0.62  22.Nb4 Rd8 23.Qc3 Re2 24.Nd5 Qc5 25.Rc2
                                   Rxc2 26.Qxc2 Ra8 27.Qc3 a2 28.Ra1 g5
                                   29.Qxe5 Qxc4
 222188086  13:    642.8    +0.62  22.Nb4 Rd8 23.Qc3 Re2 24.Nd5 Qc5 25.Rc2
                                   Rxc2 26.Qxc2 Ra8 27.Qc3 a2 28.Ra1 g5
                                   29.Qxe5 Qxc4
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swami
Posts: 6663
Joined: Thu Mar 09, 2006 4:21 am

Re: Test position WCCC17 Rybka-Junior

Post by swami »

It looks like Nb4 is obviously the only move, and not too difficult, it could make a good test position for the Knight Centralization/Repositioning test suite that I'm working on together with Dann. When I get back home, I'd have to see if this particular one can qualify as a challenging test position for engines rated <2800. :)
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diep
Posts: 1822
Joined: Thu Mar 09, 2006 11:54 pm
Location: The Netherlands

Re: Test position WCCC17 Rybka-Junior

Post by diep »

PauloSoare wrote:After 43. Nb4, it´s 43 ... Rb2 a draw?
Right,

Junior needed to win the game though, so draw wasn't an option.
A draw would've been the same thing like 1-0.

Russian chess school understands that very well.

Vincent
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