Author: Ed Schröder
Date: 00:03:49 06/19/00
Go up one level in this thread
On June 18, 2000 at 19:46:03, Dave Gomboc wrote: >On June 18, 2000 at 18:21:01, Ed Schröder wrote: > >>On June 18, 2000 at 16:34:16, blass uri wrote: >> >>>On June 18, 2000 at 12:00:08, Ed Schröder wrote: >>> >>>>On June 18, 2000 at 10:36:40, Gian-Carlo Pascutto wrote: >>>> >>>>>On June 18, 2000 at 10:17:08, Ed Schröder wrote: >>>>> >>>>>>According Rebel it is a mate in 10. >>>>>> >>>>>>Ed >>>>>> >>>>>>00:00 07.00 0.81 1.Rxh5 gxh5 2.Rxh5 Kf8 3.Rxh7 Ke8 4.Rh8+ Kd7 5.Qf5+ Kc7 >>>>>>00:01 08.00 2.37 1.Rxh5 gxh5 2.Rxh5 Kf8 3.Rxh7 Ke8 4.Qf5 Kd8 5.Qxf7 Kc8 >>>>>>6.Qxe7 >>>>>>00:03 09.00 2.47 1.Rxh5 gxh5 2.Rxh5 Kf8 3.Rxh7 Ke8 4.Qf5 Kd8+ 5.Qxf7 Kc7 >>>>>>6.Qxe7+ Kc8 >>>>>>00:43 10.00 11.74 1.Rxh5 gxh5 2.Rxh5 Kf8 3.Rxh7 e6 4.Bf6 Ke8 5.dxe6 Qxc4+ >>>>>>6.Qxc4 >>>>>>02:35 11.00 Mate in 10 moves 1.Rxh5 Kf8 Rxh7 2.Ke8 Rxf7 3.Qxc4 Qxc4 4.g5 Rhh7 >>>>>>5.b5 Rxe7+ 6.Kd8 >>>>> >>>>>I find it interesting to notice that even Rebel has some trouble with this, >>>>>taking more than 10 times as much time to resolve the 10th ply. >>>> >>>>That's pretty normal whith such big score differences (2.47 -> 11.74) as >>>>search is confrontated with big score fluctuations which causes move >>>>ordering to collapse. I wouldn't bother too much about it, it's quite >>>>normal. >>> >>>Not for all programs. >> >>Of course. >> >>>Chessmaster6000(ss=10) can see a forced mate in only 4 seconds and does not have >>>a big branching factor >> >>Sure. Maybe not in this position. >> >>>This is normal for chessmaster to see mates clearly faster than other programs >>>and I think that this is because the other programs do some mistakes in their >>>search rules. >> >>Nope. Johan has special (mate) stuff in his search no program has. >> >>Ed > >Just curious... why don't you add it to Rebel too? :-) a) because I don't know "exactly" what it is; b) too much emphasis on mates loses too much elo points in games. Ed >Dave
This page took 0.01 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.