Author: Andrew Williams
Date: 09:35:19 09/23/02
Go up one level in this thread
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
This might just be some piece of knowledge? PM gets Rxd3 at ply 1. However, PM's
score is nothing special and it's a lot slower than ruffian:
1b +1.31 00:00:00.00 19 1...Ra6
1b +1.37 00:00:00.00 41 1...Rxd3
1= +2.08 00:00:00.00 76 1...Rxd3 2.Rxd3 Kxf2
2> +2.08 00:00:00.00 80 1...Rxd3 2.Rxd3 Kxf2
2= +2.08 00:00:00.00 107 1...Rxd3 2.Rxd3 Kxf2
3> +2.08 00:00:00.00 127 1...Rxd3 2.Rxd3 Kxf2
3= +2.08 00:00:00.01 192 1...Rxd3 2.Rxd3 Kxf2
4> +1.72 00:00:00.01 542 1...Rxd3 2.Rxd3 Kxf2 3.Kc5
4= +1.75 00:00:00.01 584 1...Rxd3 2.Rxd3 Kxf2 3.Kc5
5> +1.75 00:00:00.01 724 1...Rxd3 2.Rxd3 Kxf2 3.Kc5
5= +1.75 00:00:00.01 1228 1...Rxd3 2.Rxd3 Kxf2 3.Kc5
6> +1.75 00:00:00.01 1452 1...Rxd3 2.Rxd3 Kxf2 3.Kc5
6= +1.75 00:00:00.03 4122 1...Rxd3 2.Rxd3 Kxf2 3.Kc5
7> +1.75 00:00:00.03 4700 1...Rxd3 2.Rxd3 Kxf2 3.Kc5
7= +1.75 00:00:00.05 9285 1...Rxd3 2.Rxd3 Kxf2 3.Kc5
8> +1.75 00:00:00.06 11461 1...Rxd3 2.Rxd3 Kxf2 3.Kc5 g3
8= +2.17 00:00:00.12 27523 1...Rxd3 2.Rxd3 Kxf2 3.Rd2 Kf3 4.Rd3 Ne3
5.Rd6 g3 6.Rf6 Nf5 7.Rxg6
9> +2.07 00:00:00.22 54067 1...Rxd3 2.Rxd3 Kxf2 3.Rd2 Kf3 4.Rd3 Ke2
5.Rd7 g3
9= +2.10 00:00:00.22 54599 1...Rxd3 2.Rxd3 Kxf2 3.Rd2 Kf3 4.Rd3 Ke2
5.Rd7 g3
10> +2.10 00:00:00.26 66661 1...Rxd3 2.Rxd3 Kxf2 3.Rd2 Kf3 4.Rd3 Ke2
5.Rd7 g3
10= +2.10 00:00:00.40 99948 1...Rxd3 2.Rxd3 Kxf2 3.Rd2 Kf3 4.Rd3 Ke2
5.Rd7 g3
11> +2.10 00:00:00.52 133960 1...Rxd3 2.Rxd3 Kxf2 3.Rd2 Kf3 4.Rd3 Ke2
5.Rd7 g3
...
Same score & PV all the way down to depth 18
Andrew
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