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Subject: Re: ruffian position Crafty 18.15

Author: Chessfun

Date: 09:54:22 09/23/02

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On September 23, 2002 at 12:28:14, Chessfun wrote:

>On September 23, 2002 at 12:25:01, Will Singleton wrote:
>
>>My first game with Amateur-Ruffian, and the following position arose.  10 secs
>>to find the win, looks like over a million nps (1.6ghz amd).  I tried Yace on
>>this, not even close.  I wonder what CT, Fritz or Crafty will do?
>>
>>Look at the speed at which it gets to 18 ply, with the score jumping to +5.
>>Looks pretty good to me.  btw, during the game (40 moves/4 min), using HT, I
>>think it found the move much quicker than 10 sec.
>>
>>[D]8/3R4/6p1/5n2/1K4p1/r2N1k2/5P2/8 b - - 0 1
>>
>>32406 <first : 11 157 688 8170317  Ra2 Rd8 Ra6 Kc4 Ra3 Ne5+ Kxf2 Nxg4+ Kg3 Nf6
>>34459 <first : 11 161 893 10645757  Ra1 Kc3 Ra6 Rf7 Ra3+ Kd2 Ra2+ Kc3 Ke4 Rf6
>>36041 <first : 11 163 1051 12528090  Ra8 Kc3 Ke2 Kb3 Rc8 Kb4 Rc6 Ne5 Re6 Rd5
>>36252 <first : 11 165 1071 12792218  Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Kf4 Kc3 g3
>>36492 <first : 12 167 1095 13100103  Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Kf4 Kc3 g3
>>36873 <first : 13 169 1133 13590317  Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Kf4 Kc3 g3
>>37664 <first : 14 204 1214 14638687 Rxd3
>>37674 <first : ++
>>38435 <first : 14 233 1291 15748916  Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Kf4 Rd1 g3
>>39647 <first : 15 255 1412 17401035  Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Kf4 Rd1 g3
>>41249 <first : 16 290 1572 19638104 Rxd3
>>41259 <first : ++
>>42631 <first : 16 515 1710 21654411  Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Kf4 Rd1 g3
>>46316 <first : 17 522 2078 26766445  Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Kf4 Rd1 g3
>>53026 <first : 18 522 2750 35978459  Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Kf4 Rd1 g3
>>Rg1 Kf3 Kc5 g2 Kd5 Kf2 Rxg2+ Kxg2 Ke5 Kf3 Kf6 Nh4 Kg5 Kg3
>>
>>(pv's are truncated for readability)
>>
>>Will
>
>
>ChessTiger 15 normal AMD 1400
>
>00:00:00.0	1.56	1	9	Rxd3 Rxd3+ Kxf2
>00:00:00.0	1.56	1	28	Rxd3 Rxd3+ Kxf2
>00:00:00.0	1.58	2	119	Rxd3 Rxd3+ Kxf2
>00:00:00.0	1.89	3	423	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3
>00:00:00.0	1.93	4	1223	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Rd8
>00:00:00.0	1.99	5	2786	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Kc3 g3
>00:00:00.0	1.93	6	5991	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Kc3 g3 Rd3+ Ke2
>00:00:00.2	2.07	7	16574	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Rg2 g3 Kc5 g5
>00:00:00.5	2.11	8	37520	Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rc2 g3 Rc3+ Kf2
>00:00:00.9	2.19	9	75165	Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Kc3 g3 Rd3+ Ke4 Rd2 Ke3 Rd3+
>Ke2
>00:00:01.8	2.29	10	139925	Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Kc3 g3 Rd3+ Ke4 Rd2 g5 Ra2
>Ke3
>00:00:03.8	2.35	11	302007	Rxd3 Rxd3+ Kxf2 Rd2+ Kf3 Rd3+ Ke4 Kc3 g3 Rd2 g5 Kb4
>Kf3 Rd5
>00:00:06.4	3.25	12	770973	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Rc2 g3 Rc6 g5 Rg6 Kf4 Kc5 g2
>00:00:07.3	4.26	12	1116030	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Kc3 g3 Rd3+ Ke2 Rd2+ Kf3
>Rd3+ Kf2 Rd2+ Kg1 Rd1+ Kh2 Rd7
>00:00:07.6	4.26	13	1186613	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Kc3 g3 Rd3+ Ke2 Rd2+ Kf3
>Rd3+ Kf2 Rd2+ Kg1 Rd1+ Kh2 Rd7
>00:00:08.7	4.26	14	1345247	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Kc3 g3 Rd3+ Ke2 Rd2+ Kf3
>Rd3+ Kf2 Rd2+ Kg1 Rd1+ Kh2 Rd7
>00:00:16.0	5.16	15	2432053	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Kc3 g3 Rd3+ Ke2 Rd2+ Kf3
>Rd3+ Ke4 Rd2 g5 Kb4 Kf3 Rd5 g2
>00:00:32.5	5.66	15	6084053	Rxd3 Rxd3+ Kxf2 Rd2+ Ke3 Rg2 g3 Kc5 Kf3 Rg1 g2 Ra1
>Ng3 Kd6 Nf1 Ra3+ Ke2 Ra2+ Kf3
>
>Sarah.

New game
8/3R4/6p1/5n2/1K4p1/r2N1k2/5P2/8 b - - 0 1

Analysis by Crafty 18.15:

1...Ra2
  -+  (-2.01)   Depth: 1/4   00:00:00
1...Ra2 2.Ne5+ Kxf2 3.Nxg4+
  -+  (-1.51)   Depth: 2/4   00:00:00
1...Ra2 2.Ne5+ Kxf2 3.Nxg4+ Kf3
  -+  (-1.81)   Depth: 3/6   00:00:00
1...Ra2 2.Ne5+ Kf4 3.Nd3+ Kg5 4.Kc5
  -+  (-1.81)   Depth: 4/7   00:00:00
1...Ra2 2.Ne5+ Kxf2 3.Nxg4+ Kg3 4.Kb3 Re2
  -+  (-1.84)   Depth: 5/10   00:00:00
1...Ra2 2.Kc3 Re2 3.Rd5 g3 4.fxg3 Kxg3
  -+  (-1.72)   Depth: 6/12   00:00:00  35kN
1...Ra2 2.Kc3 Ra5 3.Kc4 g3 4.fxg3 Kxg3 5.Rf7
  -+  (-1.63)   Depth: 7/14   00:00:00  73kN, tb=1
1...Ra2 2.Kc3 Ra5 3.Rf7 Ra3+ 4.Kc4 Ra4+ 5.Kc3 g3 6.fxg3 Kxg3
  -+  (-1.63)   Depth: 8/17   00:00:00  197kN, tb=1
1...Ra6 2.Rf7 Rd6 3.Kc3 g3 4.fxg3 Kxg3 5.Ne5 Ne3
  -+  (-1.69)   Depth: 8/17   00:00:01  613kN, tb=3
1...Ra6 2.Kc3 Ra5 3.Kc4 g3 4.fxg3 Kxg3 5.Nc5 g5 6.Kd5
  -+  (-1.63)   Depth: 9/19   00:00:02  1213kN, tb=31
1...Ra6 2.Ne5+ Kf4 3.Nd3+ Kg5 4.Nc5 Ra2 5.Kc3
  -+  (-1.54)   Depth: 10/21   00:00:05  2691kN, tb=141
1...Ra2 2.Rd8 Re2 3.Kc3 Re6 4.Kd2 g3 5.fxg3 Kxg3 6.Rg8 Ne3
  -+  (-1.56)   Depth: 10/21   00:00:10  5161kN, tb=378
1...Ra2 2.Ne5+ Kxf2 3.Nxg4+ Kg3 4.Ne5 g5 5.Rf7 Kf4 6.Nd3+ Ke4 7.Nc5+ Ke5 8.Nd7+
Kf4 9.Kc5
  -+  (-1.57)   Depth: 11/23   00:00:25  10975kN, tb=1209
1...Ra6 2.Kc4 Ra4+ 3.Kc3 Re4 4.Rd5 g3 5.fxg3 Kxg3 6.Nc5 Re1 7.Kd2 Ne3 8.Kxe1
Nxd5
  -+  (-1.59)   Depth: 11/23   00:00:34  15394kN, tb=1604
1...Ra8 2.Ne5+ Kxf2 3.Nxg4+ Kg3 4.Ne5 g5 5.Rf7 Nd4 6.Rg7 Kf4 7.Nd3+ Kf5 8.Kc3
  -+  (-1.62)   Depth: 11/23   00:00:42  20147kN, tb=2200
1...Ra8 2.Rf7 Ra6 3.Kc3 Ra3+ 4.Kd2 Ra2+ 5.Kc3 Ke4 6.Rd7
  -+  (-1.56)   Depth: 12/25   00:01:08  29403kN, tb=4368

Sarah.





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