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Subject: Re: test position : N for linked passed pawns

Author: Dieter Buerssner

Date: 09:51:58 11/15/05

Go up one level in this thread


On November 14, 2005 at 11:25:28, Vincent Lejeune wrote:

>[d]6k1/1p1r1pp1/3p3p/NP1Pp1n1/P3P2n/8/5K1P/4RB2 w - - 0 34
>
>Nxb7!
>
>[Event "?"]
>[Site "?"]
>[Date "2005.11.06"]
>[Round "3.8"]
>[White "x"]
>[Black "y"]
>[Result "*"]
>[SetUp "1"]
>[FEN "6k1/1p1r1pp1/3p3p/NP1Pp1n1/P3P2n/8/5K1P/4RB2 w - - 0 34"]
>[PlyCount "13"]
>
>34. Nxb7 Rxb7 35. a5 Rc7 36. b6 Rc2+ 37. Re2 Nxe4+ 38. Kg1 Nf3+ 39. Kh1 Rc1 40.
>Rxe4 *

Yace finds the move after 26 minutes (Centrino 1.7), Shredder PB after 126
minutes (P4, 2.53). Interesting might be, that Shredder avoids Rxb7 after a long
time, Yace avoids it earlier, but then has it again in the PV.

Regards,
Dieter


6k1/1p1r1pp1/3p3p/NP1Pp1n1/P3P2n/8/5K1P/4RB2 w - -

Engine: Yace via ssh (700 MB)
von Dieter Buerssner

8/23   0:00   -1.21    1.Ld3 Sgf3 2.Te3 Sd4 3.b6 Sg6 4.Lb5 Te7 (404.986) 613

9/23   0:01   -1.15    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 Shg6
                       4.Tc8+ Kh7 5.Lc4 Se7 6.Tf8 (811.794) 744

9/25   0:01   -1.15    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 Shg6
                       4.Tc8+ Kh7 5.Lc4 Se7 6.Tf8 (1.264.548) 814

10/28  0:03   -1.15    1.Ld3 g6 2.Kg3 Shf3 3.Td1 Sd4 4.h4 Sgf3
                       5.Sb3 f5 6.Sxd4 (2.952.139) 924

10/28  0:04   -1.15    1.Ld3 g6 2.Kg3 Shf3 3.Td1 Sd4 4.h4 Sgf3
                       5.Sb3 f5 6.Sxd4 (3.879.786) 945

11/30  0:08   -1.00    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 Sf5+
                       4.exf5 Sxd3 5.Tc8+ Kh7 6.b6 Sc5
                       7.Tc7 Se4+ 8.Kg4 Sc3 (8.260.456) 985

11/30  0:09   -1.00    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 Sf5+
                       4.exf5 Sxd3 5.Tc8+ Kh7 6.b6 Sc5
                       7.Tc7 Se4+ 8.Kg4 Sc3 (9.715.648) 992

12/31  0:15   -0.94    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 g5 4.Tc8+ Kh7
                       5.Lc2 b6 6.Sc4 Sxd5 7.exd5+ f5 (16.371.082) 1034

12/31  0:19   -0.94    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 g5 4.Tc8+ Kh7
                       5.Lc2 b6 6.Sc4 Sxd5 7.exd5+ f5 (20.656.527) 1042

13/33  0:34   -0.92    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 Sxd3
                       4.Tc8+ Kh7 5.Kxh4 g5+ 6.Kg4 Sc5
                       7.Tb8 Kg6 8.b6 h5+ 9.Kf3 (36.448.396) 1056

13/34  0:56   -0.92    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 Sxd3
                       4.Tc8+ Kh7 5.Kxh4 g5+ 6.Kg4 Sc5
                       7.Tb8 Kg6 8.b6 h5+ 9.Kf3 (58.520.812) 1034

14/38  1:39   -1.01    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Tc1 Sxd3
                       4.Tc8+ Kh7 5.Kxh4 g5+ 6.Kg4 Sc5
                       7.Tb8 Kg6 8.Kf3 f5 9.Tg8+ Kf6 (100.252.872) 1006

14/38  2:09   -1.00++  1.b6 f5 2.exf5 Tf7 3.Ld3 Sxf5 4.Lxf5 Txf5+
                       5.Ke2 Sh3 6.Sxb7 Sf4+ 7.Ke3 Sxd5+
                       8.Ke4 Th5 9.Kxd5 Kf8 (130.024.842) 1003

14/39  3:02   -0.64    1.b6 f5 2.exf5 Tf7 3.Sxb7 Txb7 4.a5 (182.636.003) 1001

14/39  3:19   -0.64    1.b6 f5 2.exf5 Tf7 3.Sxb7 Txb7 4.a5 (200.444.959) 1003

15/42  5:33   -0.62    1.b6 f5 2.exf5 Sxf5 3.La6 bxa6 4.b7 Txb7
                       5.Sxb7 Kf8 6.a5 Ke7 7.Tc1 Sh3+ 8.Ke1 Sf4
                       9.Tc6 g5 10.Txa6 (335.793.908) 1008

15/42  8:08   -0.62    1.b6 f5 2.exf5 Sxf5 3.La6 bxa6 4.b7 Txb7
                       5.Sxb7 Kf8 6.a5 Ke7 7.Tc1 Sh3+ 8.Ke1 Sf4
                       9.Tc6 g5 10.Txa6 (496.774.932) 1017

16/45  13:12  -0.61    1.b6 f5 2.exf5 Sxf5 3.La6 bxa6 4.b7 Txb7
                       5.Sxb7 Kf8 6.Ke2 Ke7 7.Tf1 Sd4+
                       8.Ke3 g6 9.Sa5 Sf5+ 10.Ke2 Se4
                       11.Sc4 (793.362.121) 1001

16/47  26:33  -0.60++  1.Sxb7 Txb7 2.a5 Tc7 3.b6 Tc2+ 4.Te2 Sxe4+
                       5.Kg1 Sf3+ 6.Kg2 Se1+ 7.Kg1 Txe2
                       8.Lxe2 Sc5 9.b7 Sd7 10.a6 Kh7 (1.605.246.024) 1007

16/47  32:05  -0.48    1.Sxb7 Shf3 2.h4 Sxh4 3.Sa5 f5 4.b6 Sxe4+
                       5.Txe4 fxe4 6.b7 Td8 7.Sc6 Tf8+
                       8.Ke1 Sf3+ 9.Ke2 Sd4+ 10.Ke1 Kf7
                       11.b8D Txb8 12.Sxb8 (1.959.060.430) 1017

16/47  32:05  -0.48    1.Sxb7 Shf3 2.h4 Sxh4 3.Sa5 f5 4.b6 Sxe4+
                       5.Txe4 fxe4 6.b7 Td8 7.Sc6 Tf8+
                       8.Ke1 Sf3+ 9.Ke2 Sd4+ 10.Ke1 Kf7
                       11.b8D Txb8 12.Sxb8 (1.959.668.433) 1017

17/51  44:33  0.00     1.Sxb7 Txb7 2.a5 Tc7 3.b6 Tc2+ 4.Te2 Sxe4+
                       5.Kg1 Sf3+ 6.Kg2 Sed2 7.b7 Tb2 8.a6 Sh4+
                       9.Kg1 Sxf1 10.Txb2 Sxh2 (2.760.953.598) 1032

17/51  47:33  0.00     1.Sxb7 Txb7 2.a5 Tc7 3.b6 Tc2+ 4.Te2 Sxe4+
                       5.Kg1 Sf3+ 6.Kg2 Sed2 7.b7 Tb2 8.a6 Sh4+
                       9.Kg1 Sxf1 10.Txb2 Sxh2 (2.936.723.216) 1029

18/53  110:30 +0.02    1.Sxb7 Txb7 2.a5 Tc7 3.a6 Tc2+ 4.Ke3 Ta2
                       5.b6 Sg2+ 6.Lxg2 Txa6 7.Tb1 Ta8
                       8.Tc1 Ta3+ 9.Kf2 (2.668.518.732) 402

18/53  136:11 +0.02    1.Sxb7 Txb7 2.a5 Tc7 3.a6 Tc2+ 4.Ke3 Ta2
                       5.b6 Sg2+ 6.Lxg2 Txa6 7.Tb1 Ta8
                       8.Tc1 Ta3+ 9.Kf2 (4.204.317.180) 514

19/56  228:45 +0.42++  1.Sxb7 Txb7 2.a5 Tc7 3.a6 Tc2+ 4.Ke3 Ta2
                       5.b6 Sg2+ 6.Lxg2 Txa6 7.Tb1 Ta8
                       8.Tc1 Ta3+ 9.Kf2 Ta2+ 10.Kg1 Tb2
                       11.h4 Kh7 12.hxg5 hxg5 (1.161.031.349) 84

19/56  249:50 +0.42    1.Sxb7 Txb7 2.a5 Tc7 3.a6 Tc2+ 4.Ke3 Ta2
                       5.b6 Sg2+ 6.Lxg2 Txa6 7.Tb1 Ta8
                       8.Tc1 Kh7 9.b7 Ta3+ 10.Kf2 (2.482.119.407) 165

19/56  261:37 +0.42    1.Sxb7 Txb7 2.a5 Tc7 3.a6 Tc2+ 4.Ke3 Ta2
                       5.b6 Sg2+ 6.Lxg2 Txa6 7.Tb1 Ta8
                       8.Tc1 Kh7 9.b7 Ta3+ 10.Kf2 (3.155.677.990) 201

20/63  542:53 +0.46    1.Sxb7 Txb7 2.a5 Tc7 3.a6 Tc2+ 4.Ke3 Ta2
                       5.b6 Sg2+ 6.Lxg2 Txa6 7.Tb1 Ta8
                       8.Tc1 Kh7 9.b7 Ta3+ 10.Kf2 Tb3 11.h4 Tb2+
                       12.Kg3 Txb7 13.hxg5 hxg5 14.Tc6 (3.085.945.711) 94

20/63  584:57 +0.46    1.Sxb7 Txb7 2.a5 Tc7 3.a6 Tc2+ 4.Ke3 Ta2
                       5.b6 Sg2+ 6.Lxg2 Txa6 7.Tb1 Ta8
                       8.Tc1 Kh7 9.b7 Ta3+ 10.Kf2 Tb3 11.h4 Tb2+
                       12.Kg3 Txb7 13.hxg5 hxg5 14.Tc6 (1.246.940.209) 35


6k1/1p1r1pp1/3p3p/NP1Pp1n1/P3P2n/8/5K1P/4RB2 w - -

Engine: Shredder Paderborn (200 MB)
von Stefan Meyer-Kahlen

10/20  0:01   -0.89    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Lb1 Shg6
                       4.Sc4 Se7 5.a5 f5 6.Sb6 fxe4 7.Sxd7 Sexd5 (839.530) 436

10/20  0:02   -0.88++  1.Kg3 f5 2.Le2 Sg6 3.exf5 Kf7 (1.079.980) 440

10/20  0:03   -0.64    1.Kg3 Kf8 2.b6 Sgf3 3.Lb5 g6 4.Lxd7 Kg8 (1.473.572) 449

11/22  0:04   -0.89--  1.Kg3 f5 2.Le2 Sg6 3.exf5 Se7 4.Kg4 Se4
                       5.Ld3 Sc3 6.h3 Sxa4 (1.967.151) 452

11/22  0:04   -1.07    1.Kg3 Shf3 2.Te3 Sd4 3.Ld3 g6 4.Kg4 f5+
                       5.exf5 e4 6.fxg6 exd3 7.Txd3 (2.277.423) 456

11/22  0:05   -1.06++  1.Ld3 Sh3+ 2.Kg3 Sf4 3.Lb1 Shg6
                       4.Sc4 Se7 (2.642.067) 455

11/22  0:06   -0.97    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Lb1 Shg6
                       4.Sc4 Kf8 5.a5 Ke7 6.Tf1 Tc7 (2.875.138) 458

12/24  0:10   -0.91    1.Ld3 Sh3+ 2.Kg3 Sf4 3.Lb1 Shg6
                       4.Sc4 Kf8 5.a5 Ke7 6.Kg4 Tc7 7.Se3 (4.829.815) 458

12/24  0:13   -0.90++  1.b6 f5 2.exf5 Sxf5 3.La6 bxa6 4.b7 Kh7
                       5.b8D Sh3+ 6.Kf3 e4+ 7.Txe4 Sd4+
                       8.Txd4 Tf7+ 9.Ke3 (6.095.911) 456

12/24  0:14   -0.90    1.b6 f5 2.exf5 Tf7 3.Tc1 Sxf5 4.Le2 (6.492.987) 454

13/25  0:21   -1.04    1.b6 f5 2.exf5 Tf7 3.Ld3 Sxf5 4.Lxf5 Txf5+
                       5.Ke3 Tf3+ 6.Ke2 Tf7 7.Tf1 Te7 8.h4 Sh3 (9.753.154) 451

14/26  0:43   -0.88    1.b6 f5 2.exf5 Sxf5 3.La6 Sh3+ 4.Kf3 bxa6
                       5.b7 Td8 6.Kg4 Se7 7.Kxh3 Tb8 8.Td1 Kf7 (19.247.294) 445

15/27  1:16   -0.63++  1.b6 f5 2.exf5 Sxf5 3.La6 Sh3+ 4.Kf3 bxa6
                       5.b7 Td8 6.Sc6 Sd4+ 7.Kg3 Se2+
                       8.Txe2 Td7 (33.885.168) 444

15/27  1:29   -0.63    1.b6 f5 2.exf5 Tf7 3.La6 bxa6 4.Tb1 Sxf5
                       5.b7 Sd4+ 6.Kg2 Tf8 7.h4 Tb8 8.hxg5 (39.385.199) 442

16/28  2:34   -0.38++  1.b6 f5 2.exf5 Tf7 3.Tc1 Sxf5 4.Tc8+ Kh7
                       5.Tc7 Se7+ 6.Ke1 Se4 (68.671.164) 443

16/28  3:12   -0.27    1.b6 f5 2.exf5 Sxf5 3.La6 bxa6 4.b7 Txb7
                       5.Sxb7 g6 6.Tc1 Se4+ 7.Kf3 Sf6 (85.404.070) 444

17/29  5:25   -0.14    1.b6 f5 2.exf5 Sxf5 3.La6 Sh3+ 4.Kf3 bxa6
                       5.b7 Txb7 6.Sxb7 g6 7.Tb1 Sg5+ 8.Ke2 Se4
                       9.Kd3 (144.014.527) 441

18/30  9:43   -0.14    1.b6 f5 2.exf5 Sxf5 3.La6 Sh3+ 4.Kf3 bxa6
                       5.b7 Txb7 6.Sxb7 g6 7.Tb1 Sg5+ 8.Ke2 Se4 (256.840.742)
440

19/31  24:45  -0.10    1.b6 f5 2.exf5 Sxf5 3.La6 bxa6 4.b7 Txb7
                       5.Sxb7 Kf8 6.Tb1 Se4+ (648.943.303) 436

20/32  72:12  -0.12    1.b6 f5 2.exf5 Sxf5 3.La6 bxa6 4.b7 Txb7
                       5.Sxb7 Kf7 6.Tb1 Se4+ 7.Ke1 Sd4 (1.832.663.020) 422

20/32  126:10 -0.11++  1.Sxb7 Txb7 2.a5 f5 3.a6 Tf7 4.b6 Sxe4+
                       5.Txe4 fxe4+ 6.Ke2 Tf8 7.b7 Sg6 8.a7 (3.232.869.724) 427

20/32  162:09 +0.23    1.Sxb7 Shf3 2.h4 Txb7 3.hxg5 Sxe1
                       4.a5 Tc7 5.a6 g6 6.Kxe1 hxg5 7.b6 Tc8
                       8.b7 (4.180.107.523) 429

21/33  217:19 +0.48++  1.Sxb7 Shf3 2.h4 Txb7 3.hxg5 Sxe1
                       4.a5 Tc7 5.a6 g6 6.gxh6 Kf8 (5.619.588.768) 430

21/33  267:25 +0.62    1.Sxb7 Shf3 2.h4 Sxe1 3.hxg5 Sf3
                       4.Kxf3 Txb7 5.a5 f5 6.exf5 hxg5 (6.943.533.390) 432

22/34  363:00 +0.48    1.Sxb7 Shf3 2.h4 Sxe1 3.hxg5 Sf3
                       4.Kxf3 Txb7 5.a5 f5 6.exf5 hxg5 (9.459.790.611) 434




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