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Subject: Re: Engine test move ... not the same for Crafty 19.19 ... :-(

Author: Christos Gitsis

Date: 11:12:04 07/14/05

Go up one level in this thread


On July 14, 2005 at 11:30:24, Rob Basham wrote:

>[D]2r3k1/pb1pq1pp/1pn1p1r1/5p2/1PPNn3/P3P3/2Q2PPP/R2RBBK1 b - - 0 1
>
>Black....Dr. Colle....in 1930 played....Ng5..!
>
>Crafty 19.01  finds it in 1 second!
>
>P3-850
>
>Rob


Curiously Crafty 19.19 prefers 1...Nxd4 first (with a score of -1.52) after 1:11
on my Athlon XP.

FEN: 2r3k1/pb1pq1pp/1pn1p1r1/5p2/1PPNn3/P3P3/2Q2PPP/R2RBBK1 b - - 0 1

Crafty-19.19:
   6	00:01	     130.077	1.182.518	-0,48	1. ... Nxd4 2.exd4 Qg5 3.f3 Qe3+ 4.Kh1
Qf4 5.fxe4 Qxf1+
   6	00:01	     201.205	1.341.366	-0,48	1. ... Nxd4 2.exd4 Qg5 3.f3 Qe3+ 4.Kh1
Qf4 5.fxe4 Qxf1+
   7	00:01	     284.515	1.293.250	-0,50	1. ... Nxd4 2.exd4 Qg5 3.f3 Qe3+ 4.Kh1
Ng5 5.Bd2 Qf2
   7	00:01	     541.391	1.230.434	-0,51	1. ... Ne5 2.Qa4 a6 3.Qc2 Ng4 4.h3 Ne5
   7	00:01	     623.038	1.297.995	-0,51	1. ... Ne5 2.Qa4 a6 3.Qc2 Ng4 4.h3 Ne5
   8	00:02	   1.749.934	1.277.324	-0,72	1. ... Ne5 2.Qa4 a6 3.Qc2 d5 4.f3 Nf6
5.c5 bxc5
   8	00:02	   1.953.998	1.294.038	-0,72	1. ... Ne5 2.Qa4 a6 3.Qc2 d5 4.f3 Nf6
5.c5 bxc5
   9	00:04	   4.323.395	910.188	-0,72	1. ... Ne5 2.f3 Nd6 3.c5 bxc5 4.bxc5 Ndf7
5.c6 dxc6 6.Nb3
   9	00:05	   5.463.330	950.144	-0,72	1. ... Ne5 2.f3 Nd6 3.c5 bxc5 4.bxc5 Ndf7
5.c6 dxc6 6.Nb3
  10	00:08	   8.810.284	1.067.913	-0,66	1. ... Ne5 2.f3 Nd6 3.c5 Ndf7 4.f4 Ng4
5.Qb3 Be4 6.cxb6 axb6
  10	00:11	  12.404.930	1.127.720	-0,69	1. ... Nxd4 2.exd4 Ng5 3.Kh1 Nf3 4.Qc3
Qg5 5.d5 Nxe1 6.Qxe1 exd5 7.cxd5
  10	00:12	  14.279.463	1.165.670	-0,69	1. ... Nxd4 2.exd4 Ng5 3.Kh1 Nf3 4.Qc3
Qg5 5.d5 Nxe1 6.Qxe1 exd5 7.cxd5
  11	00:17	  21.080.244	1.239.285	-0,75	1. ... Nxd4 2.exd4 Ng5 3.Kh1 Nf3 4.Qd3
Nxe1 5.Rxe1 Qh4 6.f3 Rh6 7.h3 d6
  11	00:22	  29.217.998	1.328.090	-0,75	1. ... Nxd4 2.exd4 Ng5 3.Kh1 Nf3 4.Qd3
Nxe1 5.Rxe1 Qh4 6.f3 Rh6 7.h3 d6
  12	00:26	  35.084.349	1.349.398	-1,15	1. ... Nxd4
  12	00:36	  49.162.078	1.365.613	-1,52	1. ... Nxd4 2.exd4 Ng5 3.f4 Nf3+ 4.Kh1
Nxe1 5.Rxe1 Qh4 6.Kg1 Qxf4 7.Qf2 Bf3 8.c5 b5
  12	01:11	  93.424.255	1.315.834	-1,52	1. ... Nxd4 2.exd4 Ng5 3.f4 Nf3+ 4.Kh1
Nxe1 5.Rxe1 Qh4 6.Kg1 Qxf4 7.Qf2 Bf3 8.c5 b5

In the position after 1...Ng5 it takes 13 seconds and 11 plies, before it
realizes that Black is winning (-2.48).



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