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Subject: Re: one example for the best program in the world (diagram)

Author: Uri Blass

Date: 11:53:02 12/05/05

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On December 05, 2005 at 05:06:27, Thomas Lagershausen wrote:

>[D]r1b1kn1r/2q2pb1/p1p3p1/2P1p2n/Pp2P2p/2N1BP2/1P1QBNPP/R4RK1 w kq - 0 17
>
>no program in the world found the killer 17. Nc3-d5 !! since the release of
>Rybka.
>
>This move is a onlymove according to GM Larry Christiansen in his amazing book
>"storming the barricades".
>
>Rybka v1.0 Beta.w32: Athlon 3800+
>   3	00:00	       1.010	60.837	+0,29	Sa2
>   4	00:00	       2.262	72.384	+0,24	Sa2
>   5	00:00	       4.310	68.960	+0,28	Sa2 Se6
>   6	00:00	       8.050	74.263	+0,24	Sa2 Se6 Sb4:
>   7	00:00	      19.698	85.469	+0,20	Sa2 a5 Dd6 Se6
>   8	00:00	      37.534	90.862	+0,11	Sa2 a5 Dd6 Se6 Sg4
>   9	00:01	      79.190	95.965	+0,19	Sa2 a5 Dd6 Se6 Lc4 Shf4
>  10	00:01	     131.486	97.850	+0,12	Sa2 a5 Dd6 Se6 Lc4 Shf4 Sd3
>  11	00:04	     360.506	97.198	+0,09	Sa2 a5 Tad1 Sf4 Lc4 h3 g3 Sg2
>  12	00:09	     879.488	99.359	-0,08	Sa2 a5 Tad1 Sf4 Sc1 S8e6 b3 Sd4 Db2
>  12	00:21	   1.909.618	95.480	-0,04	Sd5 cd5: ed5: h3 g3 Sf6 c6 S8h7 Tac1 Dd6
>  13	00:46	   3.574.942	81.248	-0,02	Sd5 cd5: ed5: h3 g3 Sf6 a5 S8h7 d6 Db7
>  14	01:32	   6.996.645	77.740	+0,06	Sd5 cd5: ed5: h3 g3 Sf6 c6 S8h7 Tac1 Dd6
>  15	03:08	  13.826.767	75.556	-0,02	Sd5 cd5: ed5: h3 gh3: Sf4 Lf4: ef4: Tfe1
>Le5
>  16	07:16	  30.990.543	72.747	-0,10	Sd5 cd5: ed5: h3 gh3: Sd7 d6 Dc6 Lc4 Lb7
>  17	13:27	  58.298.945	73.983	-0,03	Sd5 cd5: ed5: h3 gh3: Sd7 d6 Dc6 Lc4 Lb7
>
>Thx for this marvellous program. I have waited for such a chessprogram my whole
>lifetime. I hope i can support the author with all my abilitys.
>
>Thomas Lagershausen

There is only one problem with that analysis

My Rybka with 512 mbytes hash does not find it

New game,
[D]r1b1kn1r/2q2pb1/p1p3p1/2P1p2n/Pp2P2p/2N1BP2/1P1QBNPP/R4RK1 w kq - 0 1

Analysis by Rybka 1.0 Beta 32-bit:

1.Na2
  ²  (0.29)   Depth: 3   00:00:00
1.Na2
  =  (0.24)   Depth: 4   00:00:00
1.Na2 Ne6
  ²  (0.28)   Depth: 5   00:00:00
1.Na2 Ne6 2.Nxb4
  =  (0.24)   Depth: 6   00:00:00  8kN
1.Na2 a5 2.Qd6 Ne6
  =  (0.20)   Depth: 7   00:00:00  19kN
1.Na2 a5 2.Qd6 Ne6 3.Ng4
  =  (0.11)   Depth: 8   00:00:00  37kN
1.Na2 a5 2.Qd6 Ne6 3.Bc4 Nhf4
  =  (0.19)   Depth: 9   00:00:01  79kN
1.Na2 a5 2.Qd6 Ne6 3.Bc4 Nhf4 4.Nd3
  =  (0.12)   Depth: 10   00:00:01  132kN
1.Na2 a5 2.Qd6 Ne6 3.Bc4 Nhf4 4.Rad1 Ba6
  =  (0.20)   Depth: 11   00:00:04  309kN
1.Na2 a5 2.Qd6 Ne6 3.Bc4 Ba6 4.Bxa6 Rxa6 5.Qxc7 Nxc7
  =  (0.09)   Depth: 12   00:00:07  596kN
1.Na2 a5 2.Qd6 Ne6 3.Bc4 Ba6 4.Bxa6 Rxa6 5.Qxc7 Nxc7
  =  (0.07)   Depth: 13   00:00:16  1299kN
1.Na2 a5 2.Rad1 Ne6 3.Qd6 Qxd6 4.Rxd6 Nhf4 5.Bc4 Ba6
  =  (-0.09)   Depth: 14   00:00:49  3947kN
1.Na2 a5 2.Rfd1 Ne6 3.Qd6 Qxd6 4.Rxd6 Nhf4 5.Bc4 h3
  =  (0.04)   Depth: 15   00:02:53  12367kN
1.Na2 a5 2.Rfd1 Ne6 3.Qd6 Qxd6 4.Rxd6 Nhf4 5.Bc4 h3
  =  (0.00)   Depth: 16   00:03:59  17461kN
1.Na2 a5 2.Rad1 Nf4 3.Bc4 Be6 4.Qc2 Bxc4 5.Qxc4 N8e6
  =  (-0.05)   Depth: 17   00:08:56  39676kN

(,  05.12.2005)

Uri



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