Author: Robert Hyatt
Date: 18:50:44 06/18/00
Go up one level in this thread
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. > >Chessmaster6000(ss=10) can see a forced mate in only 4 seconds and does not have >a big branching factor > >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. > >Uri \ Chessmaster finds some great forced mates. It also gets badly bogged down and gets smoked in other kinds of positions. Win some, lose some. There are way more positions where you _don't_ get mated...
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