Author: Javier Ros Padilla
Date: 03:44:30 02/06/04
In the following position, White played 18.Ah6!! and won.
Shredder8 finds this move at ply 16/40 in time 00:03:36 in my slow K7-1800XP
(1530 Mhz), but when you choose two best lines, it finds it at ply 12/36
completing in aprox. 30 seconds, with 128 Mb Hash tables.
To avoid learning feature, I have deleted file shredder.plr between experiments.
what’s happened?
Javier Ros
Crawley,A - Tushev,A
[D] 2r2rk1/pp3pp1/3qb2p/1Bpn4/3p4/5N2/P2B1PPP/R1Q1R1K1 w - - 0 1
Analysis by Shredder 8:
18.Txe6 fxe6
-+ (-2.16) Profundidad: 1/2 00:00:00
18.Txe6 fxe6
µ (-1.35) Profundidad: 1/2 00:00:00
18.Dc2
= (-0.07) Profundidad: 1/2 00:00:00
18.Dc2
± (0.76) Profundidad: 1/2 00:00:00
18.Dc2
± (0.76) Profundidad: 1/2 00:00:00
18.Dc2 b6
² (0.60) Profundidad: 2/5 00:00:00
18.Dc2 Cc7 19.Aa4
± (0.86) Profundidad: 3/5 00:00:00
18.Dc2 Cf4 19.Ce5
± (0.90) Profundidad: 3/11 00:00:00
18.Dc2 a6 19.Ac4 Tfe8
² (0.70) Profundidad: 4/9 00:00:00
18.Ce5 f6 19.Cg6 Cb4
± (0.71) Profundidad: 4/10 00:00:00
18.Ce5 Ce3 19.fxe3 Dxe5 20.exd4 Dxd4+ 21.Ae3
± (0.78) Profundidad: 4/10 00:00:00
18.Ce5 b6 19.Dc2 f6 20.Cc4
± (0.80) Profundidad: 5/13 00:00:00
18.Ce5 a6 19.Ad3 b5 20.Da3 Tfe8
² (0.59) Profundidad: 6/13 00:00:00
18.Dc2 a6 19.Ad3 Cc3 20.Axc3 dxc3
² (0.60) Profundidad: 6/13 00:00:00
18.Dc2 Tfd8 19.Ce5 Ce3 20.fxe3 Dxe5 21.exd4 cxd4
± (0.86) Profundidad: 6/13 00:00:00
18.Dc2 c4 19.Cxd4 c3 20.Ac1 Cb4 21.De4 Axa2
± (0.87) Profundidad: 7/15 00:00:00 53kN
18.Ce5 a6 19.Ad3 Dxe5 20.Txe5 Tfe8
± (0.88) Profundidad: 7/15 00:00:00 63kN
18.Ce5 b6 19.Da3 Ce3 20.Axe3 c4 21.Dxd6
± (0.92) Profundidad: 7/15 00:00:00 73kN
18.Ce5 a6 19.Ad3 b5 20.Dc2 c4 21.Ah7+ Rh8 22.Tad1
² (0.67) Profundidad: 8/17 00:00:00 115kN
18.Ce5 a6 19.Ad3 b5 20.Dc2 c4 21.Ah7+ Rh8 22.Tad1
² (0.67) Profundidad: 8/17 00:00:00 128kN
18.Dc2 c4 19.Cxd4 c3 20.Ac1 a6 21.Cxe6 Dxh2+ 22.Rxh2
² (0.68) Profundidad: 8/17 00:00:00 138kN
18.Dc2 Cb6 19.Dd3 Cd7 20.Axd7 Axd7 21.Cxd4 cxd4 22.Dh7+ Rxh7
² (0.68) Profundidad: 8/17 00:00:00 175kN
18.Dc2 a6 19.Ad3 Cf6 20.Tac1 c4 21.Txe6 Dxe6 22.Axc4
² (0.53) Profundidad: 9/19 00:00:01 377kN
18.Ce5 a6 19.Ad3 b5 20.Dc2 c4 21.Ah7+ Rh8 22.Tad1
² (0.54) Profundidad: 9/19 00:00:01 391kN
18.Ce5 a6 19.Ad3 b5 20.Axh6 gxh6 21.Dxh6 Tfe8 22.Tad1
² (0.56) Profundidad: 9/19 00:00:01 413kN
18.a4 Af5 19.Da3 Tfd8 20.Ce5 a6 21.Ac4
² (0.57) Profundidad: 9/20 00:00:02 527kN
18.a4 Af5 19.Da3 Cb4 20.Axb4 cxb4 21.Ac4 bxa3 22.Axf7+ Txf7
² (0.57) Profundidad: 9/20 00:00:02 553kN
18.a4 a6 19.Ac4 Tfe8 20.Ce5 Cb6 21.Axe6 Txe6 22.Db1 Txe5 23.Dh7+ Rxh7
² (0.32) Profundidad: 10/20 00:00:03 809kN
18.a4 a6 19.Ac4 Tfe8 20.Tb1 Ag4 21.Tb3 Txe1+ 22.Cxe1 b6 23.Axd5 Dxh2+ 24.Rxh2
² (0.32) Profundidad: 10/22 00:00:03 880kN
18.Ce5 a6 19.Ad3 b5 20.Axh6 Dxe5 21.Txe5 gxh6
² (0.33) Profundidad: 10/22 00:00:04 956kN
18.Ce5 a6 19.Ad3 b5 20.Axh6 Tfe8 21.Dg5 c4
² (0.68) Profundidad: 10/22 00:00:04 1006kN
18.Ce5 Cf6 19.f3 a6 20.Cc4 Axc4 21.Axc4 Cd5 22.Dc2 b5 23.Ab3
² (0.69) Profundidad: 10/24 00:00:05 1386kN
18.Ce5 Cf6 19.Af4 Ch5 20.Axh6 gxh6 21.Dxh6 c4 22.Dxh5
² (0.64) Profundidad: 11/25 00:00:07 1951kN
18.Ce5 Cf6 19.a4 Af5 20.Af4 Ch5 21.Cc4 Dxf4 22.Ca3 Dxc1
² (0.65) Profundidad: 12/27 00:00:12 3068kN
18.Ce5 c4 19.Cxc4 De7 20.Da3 a6 21.Dxe7 Cxe7 22.Ad7 b5 23.Axc8 bxc4
± (0.89) Profundidad: 13/28 00:00:25 6703kN
18.Ce5 Af5 19.Da3 a6 20.Df3 axb5 21.Dxf5 f6 22.Cf3 Tfe8 23.Dg6 Txe1+ 24.Txe1
Dxh2+ 25.Rxh2 Ce7 26.Txe7
± (0.80) Profundidad: 14/31 00:00:52 14480kN
18.Ce5 Af5 19.Da3 a6 20.Df3 axb5 21.Dxf5 Ce7 22.Df3 b6 23.Af4 Dd5 24.Axh6 gxh6
25.Dxf7+ Txf7
² (0.59) Profundidad: 15/28 00:01:16 20911kN
18.Ad3 Tfe8 19.Da3 Cf6 20.Tab1 Db8 21.Ab5 Af5 22.Axe8 Txe8 23.Dxc5 Axb1 24.Txb1
² (0.60) Profundidad: 15/36 00:01:28 24221kN
18.Ad3 c4 19.Axh6 Dd8 20.Ae4 gxh6 21.Dxh6 Cf6 22.Cg5 a6 23.Axb7
± (0.94) Profundidad: 15/39 00:02:00 32656kN
18.Ad3 Tfe8 19.Axh6 Cb4 20.Ae4 Ad5 21.Af4 Dc6 22.Ce5 Txe5 23.Axe5 Axe4 24.Txe4
Dxe4 25.Df4
± (0.79) Profundidad: 16/40 00:03:15 50896kN
18.Axh6 gxh6 19.Dxh6 Df4 20.Cg5 Df5 21.Te5 Dxe5 22.Dh7#
± (0.80) Profundidad: 16/40 00:03:36 56578kN
18.Axh6 gxh6 19.Dxh6 Df4 20.Cg5 Df5 21.Te5 Cf6 22.Txf5 Cg4 23.Cxe6 Cxh6
± (1.15) Profundidad: 16/40 00:03:44 58727kN
(Ros, Sevilla 06.02.2004)
Crawley,A - Tushev,A
2r2rk1/pp3pp1/3qb2p/1Bpn4/3p4/5N2/P2B1PPP/R1Q1R1K1 w - - 0 1
Analysis by Shredder 8 ply 12/36 completed in aprox. 30 seconds
1. ± (1.39): 18.Axh6 Af5 19.Ag5 a6 20.Ac4 Tfe8 21.Da3 b5 22.Cxd4 Dh6 23.Axh6
Txe1+ 24.Txe1
2. ± (0.79): 18.Ce5 Cf6 19.Axh6 gxh6 20.Dxh6 Dd8 21.Cg6 fxg6 22.Dxg6+ Rh8
23.Txe6 c4 24.Tc1 d3 25.Dh6+ Rg8 26.Axc4
(Ros, Sevilla 06.02.2004)
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