Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: 2 tough positions: Avoid dxc4? and d5!! - shredder 8

Author: Joseph Tadeusz

Date: 16:09:29 05/18/05

Go up one level in this thread


On May 18, 2005 at 07:55:34, tomasz buchta wrote:

>FEN: rn1qk2r/pp3ppp/4b3/3p4/2PP1p2/B4N2/P3Q1PP/R4RK1 b kq - 0 1
>
>Shredder 8:
>  1/1+	00:00	           1	100	+0,62	d5xc4
>  1/1	00:00	           2	200	+0,62	d5xc4
>  2/4	00:00	          80	8.000	+0,63	d5xc4 Ra1c1
>  3/6	00:00	         383	38.300	+0,41	d5xc4 Qe2e5 Qd8f6
>  4/10	00:00	       1.463	73.150	+0,34	d5xc4 Qe2e5 Rh8g8 Ra1e1
>  5/11	00:00	       2.359	117.950	+0,30	d5xc4 Qe2e5 Rh8g8 Ra1e1 c4c3 Qe5xf4
>  6/12	00:00	       6.099	152.475	+0,15	d5xc4 Qe2e5 Rh8g8 Qe5xf4 Nb8c6 Ra1e1
>  7/15	00:00	      18.389	229.862	+0,32	d5xc4 Qe2e5 Rh8g8 Ra1e1 Nb8c6 Qe5c5 h7h6
>  8/17	00:00	      39.686	283.471	+0,15	d5xc4 Qe2e5 Rh8g8 Ra1c1 Nb8c6 Qe5xf4
>b7b5 Rc1e1
>  9/15	00:00	      70.576	306.852	+0,17	d5xc4 Qe2e5 Rh8g8 Ra1c1 Nb8c6 Qe5xf4
>b7b5 Ba3d6 Qd8f6
> 10/17	00:00	     190.204	321.834	+0,17	d5xc4 Qe2e5 Nb8d7 Qe5b5 Ra8b8 Ra1c1 a7a6
>Qb5a4 b7b5 Qa4xa6
> 11/24	00:01	     342.233	331.942	+0,34	d5xc4 Qe2e5 Nb8d7 Qe5b5 Qd8b6 Qb5g5 f7f6
>Qg5xg7 000 Ra1b1 Qb6c6 Ba3e7 Rd8e8
> 12/29+	00:02	     722.578	340.357	+0,59	d5xc4 Qe2e5 Nb8d7 Qe5b5 Qd8b6 Qb5g5
>f7f6 Qg5xg7 000 Ra1b1 Qb6c6 Ba3e7 Rd8g8
>
>Nf3e5 Rg8xg7
> 12/29	00:02	     900.012	355.174	+0,64	d5xc4 Qe2e5 Nb8d7 Qe5b5 Qd8b6 Qb5g5 f7f6
>Qg5xg7 000 Ra1b1 Qb6c6 Rf1e1 Kc8b8
>
>Ba3e7
> 13/29	00:04	   1.400.573	355.836	+0,42	d5xc4 Qe2e5 Nb8d7 Qe5b5 Qd8b6 Qb5g5 f7f6
>Qg5xg7 000 Ra1b1 Qb6c6 Rf1e1 c4c3
>
>Qg7e7 Be6xa2
> 14/35	00:07	   2.667.410	358.474	+0,66	d5xc4 Qe2e5 Nb8d7 Qe5b5 Qd8b6 Qb5g5 f7f6
>Qg5xf4 000 Ra1b1 Qb6c6 Ba3e7 Rd8e8
>
>Qf4d6 Qc6xd6
> 15/39	00:22	   7.492.169	334.740	+0,80	d5xc4 Ra1e1 Qd8d5 Qe2e5 Qd5xe5 Nf3xe5
>Nb8a6 Ne5xc4 000 Nc4d6+ Kc8b8 Re1e2
>
>Rd8d7 Rf1c1 Rh8d8 Re2c2 Rd7xd6 Ba3xd6+ Rd8xd6
> 16/37	00:38	  12.139.639	315.848	+0,62	d5xc4 Ra1e1 Qd8d5 Qe2e5 Qd5xe5 Nf3xe5
>Nb8a6 d4d5 Be6xd5 Ne5xc4+ Ke8d8 Rf1xf4
>
>Kd8c7 Nc4d6 Ra8d8 Nd6xf7 Bd5xf7
> 17/38	01:10	  23.733.198	335.442	+0,73	d5xc4 Ra1e1 Qd8d5 Qe2e5 Qd5xe5 Nf3xe5
>Nb8a6 d4d5 Be6xd5 Ne5xc4+ Ke8d7 Re1d1
>
>Na6c7 Rf1xf4 Kd7c8 Nc4d6+ Kc8b8
> 18/42	02:21	  48.735.030	345.068	+0,74	d5xc4 Ra1e1 Qd8d5 Qe2e5 Qd5xe5 Nf3xe5
>Nb8a6 d4d5 Be6xd5 Ne5xc4+ Ke8d7 Re1d1
>
>Na6c7 Rf1xf4 f7f6 Rf4d4 Rh8d8
> 19/45-	05:33	 115.853.874	347.190	+0,49	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5xa3 Nd4xe6 b7b6 Rf1xf4 Qa3xa2 Qe2xa2
>
>f7xe6 Rf4xc4 00 Rc4c1 Nb8c6
> 19/45-	06:26	 135.411.386	350.293	-0,01	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5b6 Kg1h1 Nb8d7 Rf1xf4 000 Nd4xe6
>
>Qb6xe6 Rf4e4 Qe6f5 Qe2xc4+ Kc8b8 Rd1f1 Qf5f4 Re4xf4
> 19/45	06:53	 145.354.128	351.543	-0,01	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5b6 Kg1h1 Nb8d7 Rf1xf4 000 Nd4xe6
>
>Qb6xe6 Rf4e4 Nd7e5 Rd1xd8+ Rh8xd8 Re4xe5 Qe6xe5 Qe2xc4+ Kc8b8 Qc4c8+ Rd8xc8
> 20/51	14:13	 304.953.419	357.508	-0,04	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5xa3 Nd4xe6 Qa3e3+ Qe2xe3 f4xe3 Ne6c7+
>
>Ke8e7 Rf1e1 Rh8c8 Re1xe3+ Ke7f8 Nc7xa8 Nb8c6 Re3e4 c4c3 Re4c4 Rc8xa8
> 21/49	24:28	 527.153.226	358.895	-0,15	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5xa3 Nd4xe6 Qa3e3+ Qe2xe3 f4xe3 Ne6c7+
>
>Ke8e7 Rf1e1 Rh8c8 Re1xe3+ Ke7f8 Nc7xa8 Nb8c6 Re3e4 c4c3 Re4c4 Rc8xa8 Rc4xc3
>Ra8e8
> 22/53	52:56	1.131.652.789	356.229	-0,03	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5xa3 Nd4xe6 Qa3e3+ Qe2xe3 f4xe3 Ne6c7+
>
>Ke8e7 Rf1e1 Rh8c8 Re1xe3+ Ke7f8 Nc7xa8 Nb8c6 Re3e4 Rc8xa8 Re4xc4 Ra8e8 Kg1f2
>Re8e7
> 23/57	1:35:07	2.039.699.843	357.372	-0,02	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5xa3 Nd4xe6 Qa3e3+ Qe2xe3 f4xe3 Ne6c7+
>
>Ke8e7 Rf1e1 Rh8c8 Re1xe3+ Ke7f8 Nc7xa8 Nb8c6 Re3e4 Rc8xa8 Re4xc4 Ra8e8 Kg1f2
>Re8e7
> 24/59	3:03:17	4.004.916 876	364.183	+0,11	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5xa3 Nd4xe6 Qa3e3+ Qe2xe3 f4xe3 Ne6c7+
>
>Ke8e7 Rf1e1 Rh8c8 Re1xe3+ Ke7f8 Nc7xa8 Nb8c6 Re3e4 Rc8xa8 Re4xc4 Ra8e8 Kg1f1
> 25/61	5:31:59	7.252.059 839	364.070	-0,11	d5xc4 d4d5 Qd8xd5 Ra1d1 Qd5a5 Nf3d4
>Qa5xa3 Nd4xe6 Qa3e3+ Qe2xe3 f4xe3 Rd1d8+ Ke8e7 Rd8xh8 Ke7xe6 Rh8e8+ Ke6d7 Re8xe3
>f7f6 Re3g3 g7g6 Rg3h3 Kd7e6 Rf1e1+ Ke6d5

Impressive depth. I wonder how it needs only 2 nodes for depth 1.
Must be some pruning logic like "these passive moves are not going to improve
alpha so skip them".
Crafty needs 265 nodes.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.