Author: Tim Foden
Date: 11:45:49 04/17/01
Go up one level in this thread
On April 17, 2001 at 11:13:02, Heiner Marxen wrote: >On April 17, 2001 at 07:43:30, leonid wrote: > >>Hello! >> >>If you like to solve very "regular" mate position, then you have one. >> >>[D]R7/4P1Pq/1rR5/2pb1rnk/1Q3B2/4Nn2/1PB2Np1/2K1b1Q1 w - - >> >>Please, indicate your result. >> >>Thanks, >>Leonid. > >According to Chest there are two key moves for mate in 7 moves: > >Qxg2 Bd2+ Qxd2 Bxc6 g8=Q Qxg8 Rxg8 Bd5 e8=Q+ Bf7 Nxf5 Nd4 Rxg5# >Rh8 Bd2+ Qxd2 Be4 e8=Q+ Rf7 Qxf7+ Nxf7 Qd5+ Bf5 Rxh7+ Nh6 Rhxh6# This is worrying to me, as Green Light thinks it finds another mate in 7, which begins with e8=Q+ As I understand it Chest finds all the mates, doesn't it? Here is a snippet of GLC's analysis (v2.14-pr7, hash 48M, Duron 880MHz): 8 26.25 320.983 16660k Bd1 Bd2+ Qxd2 Rxc6 Qh2+ Kg6 e8=Q+ Bf7 Qxh7+ Kxh7 g8=Q+ Bxg8 Qxg8+ Kh6 Nxf5+ Kh5 Qxg5# 8 51.62 320.987 38611k e8=Q+ Bf7 Qxg2 Rxc6 Qg4+ Kg6 Qxf5+ Kh5 Qexf7+ Rg6 Qg4+ Kh6 Nf5# <ht> 8 55.91 320.987 42689k e8=Q+ Bf7 Qxg2 Rxc6 Qg4+ Kg6 Qxf5+ Kh5 Qexf7+ Rg6 Qg4+ Kh6 Nf5# <ht> 9 1:00 320.987 47464k e8=Q+ Bf7 Qxg2 Rxc6 Qg4+ Kg6 Qxf5+ Kh5 Qexf7+ Rg6 Qg4+ Kh6 Nf5# <ht> 9 1:31 320.987 77248k e8=Q+ Bf7 Qxg2 Rxc6 Qg4+ Kg6 Qxf5+ Kh5 Qexf7+ Rg6 Qg4+ Kh6 Nf5# <ht> 10 1:51 320.987 96843k e8=Q+ Bf7 Qxg2 Rxc6 Qg4+ Kg6 Qxf5+ Kh5 Qexf7+ Rg6 Qg4+ Kh6 Nf5# <ht> Cheers, Tim.
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.