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Subject: Re: How many engines select Qb4? (The Baron 1.5.0)

Author: Richard Pijl

Date: 11:20:20 11/14/04

Go up one level in this thread


On November 13, 2004 at 17:19:37, Kurt Utzinger wrote:

>On November 13, 2004 at 14:40:59, Cliff Sears wrote:
>
>>[d] 2r4k/pb2q2P/1p6/3Pp3/4p3/1P2R3/PBrQ2PP/5RK1 w - - 0 28
>>
>>wKg1,Qd2,Bb2,Re3,f1,Pa2,b3,d5,g2,h2,h7/bKh8,Qe7,Bb7,Rc2,c8,Pa7,b6,e4,e5
>>
>>Fritz 8 and Crafty 19.17 select this move, HIARCS 6 "d6", Anaconda 162 "Bb2-a3"
>>
>>
>>Zukertort,J (2600) - Blackburne,J (2570) [A13]
>>GCG_004 London, 1883
>>[Fritz 5.00 (30s)]
>>
>>1.c2-c4 e7-e6 Opening = A13 - Reti Eröffnung /Reti Opening 2.e2-e3 Ng8-f6
>>3.Ng1-f3 b7-b6 4.Bf1-e2 Bc8-b7 5.0-0 d7-d5N [5...Bf8-e7 6.d2-d4 c7-c5 7.Nb1-c3
>>c5xd4 8.Nf3xd4 0-0 9.b2-b3 a7-a6 10.Bc1-b2 Qd8-c7 11.Ra1-c1 d7-d6 12.Be2-f3
>>Nb8-d7 13.Bf3xb7 Qc7xb7 14.Qd1-f3 Qb7xf3 ½-½ Grathwohl,R-Wohlfahrt,H/BL2-S
>>1995/BL2] 6.d2-d4 Bf8-d6 [6...Bf8-d6] 7.Nb1-c3 0-0 8.b2-b3 Nb8-d7 9.Bc1-b2
>>Qd8-e7 10.Nc3-b5 Nf6-e4² [10...d5xc4 11.b3xc4 e6-e5 12.Nb5xd6 c7xd6 13.Bb2-a3=]
>>11.Nb5xd6= [11.c4xd5 e6xd5 12.Ra1-c1 c7-c5²] 11...c7xd6 12.Nf3-d2 Nd7-f6
>>13.f2-f3 Ne4xd2 14.Qd1xd2 d5xc4 15.Be2xc4 d6-d5 16.Bc4-d3 Rf8-c8 17.Ra1-e1
>>Rc8-c7 18.e3-e4 Ra8-c8 19.e4-e5 Nf6-e8 20.f3-f4 g7-g6 21.Re1-e3 f7-f5 22.e5xf6
>>Ne8xf6 23.f4-f5 Nf6-e4 [23...g6xf5? 24.Bd3xf5 Rc7-c6 25.Qd2-e1+-] 24.Bd3xe4
>>d5xe4 25.f5xg6³ [25.f5-f6!? Qe7-f7 26.Re3-c3=] 25...Rc7-c2 26.g6xh7+ Kg8-h8
>>27.d4-d5+ e6-e5 1-0
>
>
>FEN: 2r4k/pb2q2P/1p6/3Pp3/4p3/1P2R3/PBrQ2PP/5RK1 w - - 0 28
>
>The Baron 1.5.0: (P4 1.8/32 MB hash, Arena 1.092)
>   3	00:00	      10.150	10.150	-1.29	Qd2-d1 Rc2xb2 d5-d6
>   3	00:00	      10.705	10.705	-1.29	Qd2-d1 Rc2xb2 d5-d6
>   4	00:00	      12.689	12.689	-1.39	Qd2-d1 Rc2xb2 Qd1-g4 Rb2xa2
>   4	00:00	      22.662	22.662	-0.62	Rf1-f7 (Qe7xf7) (Bb2xe5) (Kh8xh7) (Re3-h3)
>   4	00:00	      24.448	24.448	-0.32	Rf1-f7 Qe7-e8 Qd2xc2 Rc8xc2 Rf7xb7
>   4	00:00	      35.413	35.413	-0.32	Rf1-f7 Qe7-e8 Qd2xc2 Rc8xc2 Rf7xb7
>   5	00:00	      44.827	44.827	-0.32	Rf1-f7 Qe7-e8 Qd2xc2 Rc8xc2 Rf7xb7 Rc2xb2
>(Rb7xa7)
>   5	00:00	      81.803	81.803	-0.32	Rf1-f7 Qe7-e8 Qd2xc2 Rc8xc2 Rf7xb7 Rc2xb2
>(Rb7xa7)
>   6	00:01	     114.868	114.868	-1.00	Rf1-f7 Rc2xd2 Rf7xe7 Rd2xb2 Re3-e1 Bb7xd5
>(Re7xa7)
>   6	00:01	     185.296	185.296	-0.35	Rf1-f8 Qe7xf8 Bb2xe5 Kh8xh7 Re3-h3 Kh7-g6
>Rh3-g3 Kg6-f7 Qd2-f4 Kf7-e8 Qf4xe4 (Rc2xa2)
>   6	00:01	     235.374	235.374	-0.35	Rf1-f8 Qe7xf8 Bb2xe5 Kh8xh7 Re3-h3 Kh7-g6
>Rh3-g3 Kg6-f7 Qd2-f4 Kf7-e8 Qf4xe4 (Rc2xa2)
>   7	00:02	     312.136	312.136	-2.83	Rf1-f8 Qe7xf8 Bb2xe5 Kh8xh7 Re3-h3 Kh7-g6
>Rh3-g3 Kg6-f7 Rg3-g7 Kf7-e8 Qd2-e1 Bb7xd5 (Rg7xa7)
>   7	00:02	     399.074	199.537	-1.00	Rf1-f7 Rc2xd2 Rf7xe7 Rd2xb2 Re3-e1 Bb7xd5
>Re7xa7
>   7	00:03	     556.653	185.551	-0.05	d5-d6 (Qe7-e6) (Rf1-f8) (Kh8xh7) (Qd2-d1)
>(Rc2xb2) (Qd1-h5) (Qe6-h6) (Qh5-f7)
>   7	00:03	     632.091	210.697	+0.62	d5-d6 Qe7-e6 Rf1-f8 Kh8xh7 Qd2-d1 Rc8xf8
>Qd1xc2 Qe6xd6
>   7	00:04	     773.930	165.369	+0.62	d5-d6 Qe7-e6 Rf1-f8 Kh8xh7 Qd2-d1 Rc8xf8
>Qd1xc2 Qe6xd6
>   8	00:06	   1.025.109	169.720	-0.30	d5-d6 Qe7-g7 Qd2xc2 Rc8xc2 Re3-g3 Qg7xg3
>h2xg3 Rc2xb2 Rf1-f8 Kh8xh7 (d6-d7)
>   8	00:09	   1.775.882	179.563	-0.30	d5-d6 Qe7-g7 Qd2xc2 Rc8xc2 Re3-g3 Qg7xg3
>h2xg3 Rc2xb2 Rf1-f8 Kh8xh7 (d6-d7)
>   9	00:12	   2.271.661	183.642	-0.30	d5-d6 Qe7-g7 Qd2xc2 Rc8xc2 Re3-g3 Qg7xg3
>h2xg3 Rc2xb2 Rf1-f8 Kh8xh7 (d6-d7)
>   9	00:18	   3.570.367	188.310	-0.30	d5-d6 Qe7-g7 Qd2xc2 Rc8xc2 Re3-g3 Qg7xg3
>h2xg3 Rc2xb2 Rf1-f8 Kh8xh7 (d6-d7)
>  10	00:25	   4.957.542	193.502	-0.53	d5-d6 Qe7-g7 Qd2xc2 Rc8xc2 Re3-g3 Qg7-d7
>Bb2xe5 Kh8xh7 Rg3-h3 Kh7-g6 Rh3-g3 Kg6-h5 Rg3-h3
>  10	00:41	   8.209.737	195.889	 0.00	Qd2-b4 (Rc2xg2) (Kg1xg2) (Rc8-c2) (Kg2-h1)
>(Qe7xb4) (Bb2xe5) (Kh8xh7) (Re3-h3) (Kh7-g6) (Rf1-g1) (Kg6-f7) (Rg1-g7) (Kf7-e8)
>(Rh3-h8)
>  10	00:49	   9.532.656	194.108	+1.25	Qd2-b4 (Rc2xg2) (Kg1xg2) (Rc8-c2) (Kg2-h1)
>(Qe7xb4) (Bb2xe5) (Kh8xh7) (Re3-h3) (Kh7-g6) (Rf1-g1) (Kg6-f7) (Rg1-g7) (Kf7-e8)
>(Rh3-h8)
>  10	00:57	  10.983.073	192.415	+3.56	Qd2-b4 Rc2xg2 Kg1xg2 Rc8-c2 Kg2-h1 Rc2xh2
>Kh1xh2 Qe7xb4 Bb2xe5 Kh8xh7 Re3-h3 Kh7-g6 Rf1-f6 Kg6-g7
>  10	01:02	  11.952.921	192.695	+3.56	Qd2-b4 Rc2xg2 Kg1xg2 Rc8-c2 Kg2-h1 Rc2xh2
>Kh1xh2 Qe7xb4 Bb2xe5 Kh8xh7 Re3-h3 Kh7-g6 Rf1-f6 Kg6-g7
>  11	01:31	  17.109.954	186.525	+4.12	Qd2-b4 (Rc2xg2) (Kg1xg2) (Rc8-c2) (Kg2-h1)
>(Rc2xh2) (Kh1xh2) (Qe7xb4) (Bb2xe5) (Kh8xh7) (Re3-h3) (Kh7-g6) (Rh3-g3) (Kg6-h5)
>(Rf1-h1)
>  11	02:03	  22.762.960	185.064	+6.47	Qd2-b4 (Rc2xg2) (Kg1xg2) (Rc8-c2) (Kg2-h1)
>(Rc2xh2) (Kh1xh2) (Qe7xb4) (Re3-h3) (Qb4-d2) (Kh2-h1) (Qd2xb2) (Rf1-f8)


Funny. I've tried this position with a slightly new version of the Baron of
which I thought that there would be no real improvement over 1.5.0 and it finds
the key move one ply earlier (P4-2.4, 100Mb hash):

  4( 8).   0:00.55     31200   -0.32  Rf1-f7 Qe7-e8 Qd2xc2 Rc8xc2 Rf7xb7
  5(12)&   0:00.60     39711   -0.32  Rf1-f7 Qe7-e8 Qd2xc2 Rc8xc2 Rf7xb7
                                      Rc2xb2 (Rb7xa7)
  5(12).   0:00.77     70708   -0.32  Rf1-f7 Qe7-e8 Qd2xc2 Rc8xc2 Rf7xb7
                                      Rc2xb2 (Rb7xa7)
  6(13)&   0:00.93     99524   -1.00  Rf1-f7 Rc2xd2 Rf7xe7 Rd2xb2 Re3-e1
                                      Bb7xd5 (Re7xa7)
  6(14)+   0:01.21    157268   -0.02  Qd2-b4 (Qe7xb4) (Bb2xe5) (Kh8xh7) (Re3-h3)

                                      (Kh7-g6) (Rh3-g3) (Kg6-h5) (Rf1-f5)
(Kh5-h4) (Be5-f6)
  6(14)&   0:01.26    168296   +0.00  Qd2-b4 Qe7xb4 Bb2xe5 Kh8xh7 Re3-h3
                                      Kh7-g6 Rf1-f6 Kg6-g5 Rh3-g3 Kg5-h5 Rg3-h3
                                      Kh5-g5 <rep>
  6(14).   0:01.48    211034   +0.00  Qd2-b4 Qe7xb4 Bb2xe5 Kh8xh7 Re3-h3
                                      Kh7-g6 Rf1-f6 Kg6-g5 Rh3-g3 Kg5-h5 Rg3-h3
                                      Kh5-g5 <rep>
  7(14)&   0:01.92    306134   -1.38  Qd2-b4 Rc2xg2 Kg1xg2 Qe7xb4 Bb2xe5
                                      Kh8xh7 Re3-h3 Kh7-g6 Rh3-g3 Kg6-h6 Rg3-h3
                                      Kh6-g5
  7(15)&   0:03.02    552484   -1.00  Rf1-f7 Rc2xd2 Rf7xe7 Rd2xb2 Re3-e1
                                      Bb7xd5 Re7xa7
  7(15)+   0:03.57    679283   +0.30  d5-d6 (Qe7-e6) (Rf1-f8) (Kh8xh7) (Qd2-d1)
                                      (Rc2xb2) (Qd1-h5) (Qe6-h6) (Rf8-f7)
  7(15)&   0:03.90    756048   +0.62  d5-d6 Qe7-e6 Rf1-f8 Kh8xh7 Qd2-d1
                                      Rc8xf8 Qd1xc2 Qe6xd6
  7(15).   0:04.06    785150   +0.62  d5-d6 Qe7-e6 Rf1-f8 Kh8xh7 Qd2-d1
                                      Rc8xf8 Qd1xc2 Qe6xd6
  8(16)&   0:05.60   1136896   -0.30  d5-d6 Qe7-g7 Qd2xc2 Rc8xc2 Re3-g3
                                      Qg7xg3 h2xg3 Rc2xb2 Rf1-f8 Kh8xh7
  8(16).   0:09.01   1904149   -0.30  d5-d6 Qe7-g7 Qd2xc2 Rc8xc2 Re3-g3
                                      Qg7xg3 h2xg3 Rc2xb2 Rf1-f8 Kh8xh7
  9(17)&   0:10.93   2350718   -0.68  d5-d6 Qe7-g7 Qd2xc2 Rc8xc2 Re3-g3
                                      Qg7-d7 Bb2xe5 Kh8xh7 Rg3-g7 Qd7xg7 Be5xg7
                                      e4-e3 Rf1-f7 (Rc2xg2)
  9(18)+   0:13.68   3001785   +0.00  Qd2-b4 (Qe7xb4) (Bb2xe5) (Kh8xh7) (Re3-h3)
                                      (Kh7-g6) (Rf1-f6) (Kg6-g5) (Rh3-g3)
(Kg5-h5) (Rf6-f5)
                                      (Kh5-h4) (Be5-f6)
  9(18)+   0:15.76   3484083   +1.25  Qd2-b4 (Qe7xb4) (Bb2xe5) (Kh8xh7) (Re3-h3)
                                      (Kh7-g6) (Rf1-f6) (Kg6-g5) (Rh3-g3)
(Kg5-h5) (Rf6-f5)
                                      (Kh5-h4) (Be5-f6)
  9(19)&   0:58.11  12941369   +4.74  Qd2-b4 Rc2xg2 Kg1xg2 Rc8-c2 Kg2-h1
                                      Qe7xb4 Bb2xe5 Kh8xh7 Re3-h3 Kh7-g6 Rf1-g1
                                      Kg6-f7 Rh3-h7 Kf7-e8 Rg1-g8



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