Author: Ed Schröder
Date: 07:17:08 06/18/00
Go up one level in this thread
On June 18, 2000 at 07:14:20, Gian-Carlo Pascutto wrote: > >Hi all > >At the bottom of this post is a test position. The idea is not to check which >programs find the correct move (should be easy), but when the program first >spots it, with which score, when it fails high, how long it takes for the >fail-high to resolve and what score it gets back. > >The idea is to see how well the programs handle this kind of positions where >the extensions suddenly can get wild, just when the alpha-beta window opens. >Some can handle this very well, other have the search totally blow up... > >I've done a bit of testing already, and the results vary rather widely...so >I'd like to get as much data as possible on this one. If you are a programmer >yourself, _please_ indicate what extensions your program uses, or other >relevant info about your search. I'd like to get an idea of the do's/dont's >when extending. > >Also, if anyone has other positions like this (preferrably even harder/worse), >please share them. > >[D] rr4k1/pp2pp1p/q2p2p1/2pP3n/2P5/2BQP2R/PP3P2/2K4R w - - 0 19 > >PS. Is this a forced mate? If so, how many moves exactly? > >-- >GCP 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
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.