Author: Dann Corbit
Date: 13:49:07 07/30/01
Go up one level in this thread
On July 30, 2001 at 16:23:50, Otello Gnaramori wrote: >For my own curiosity I tried another wonderful problem from Krabbe' >Collection,the so called Diagram of the Century, available here with my faithful >computerized friend Fritz6 : > >http://www.xs4all.nl/~timkr/chess/babs.html > >Fritz6 mate search engine in a fraction of second erupts the correct solution , >a mate in 4 starting with 1. a7 ! : > >1.a7 threatening axb8Q(#3) 1...axb1Q [1...axb1R 2.axb8R threatening Rxf4#(#1) >2...Re1 (2...Rxb2 3.Rxb3) 3.Rxf4+ (3.Qc1; 3.Qb1; 3.Rxb3) ; >1...axb1B 2.axb8B threatening Rxf4+(#2) 2...Bc2 (2...Be4 3.Bxf4) 3.Rxf4+ (3.Qe1; >3.Bxf4; 3.Qc1; 3.Nd6; 3.Qh1) ; >1...axb1N 2.axb8N threatening Rxf4#(#1) 2...Nxd2 (2...Nc3 3.Rxf4+ (3.Qb1; 3.Bf3; >3.Bg2; 3.Bh1; 3.f3; 3.Qh1) ; 3.Qc1; >1...Qd6 2.Re1 threatening Re4#(#1) 2...Qe5 (2...Qc6 3.Rxf4+) 3.Qc1 (3.Nxe5) ; >1...Qe5 2.Bxe7 threatening Bxf6(#2) 2...axb1Q a)2...axb1N 3.Bxf6 (a)3.d8Q+; >a)3.d8R+) ; b)2...Qd6 3.Nxd6; c)2...Qb8+ 3.axb8N (c)3.axb8Q; c)3.axb8R; >c)3.axb8B) ; d)2...Qd5 3.Rxf4+ (d)3.Bxd5) ; 3.d8Q+; >1...Qxa8 2.Rxf4+ Qe4 3.a8Q; >1...Qxd8+ 2.Kg7 threatening Rxf4#(#1) 2...axb1Q a)2...Qc7 3.d8Q+ (a)3.d8R+) ; >b)2...Qb8 3.axb8R (b)3.axb8B; b)3.axb8N; b)3.d8Q+; b)3.d8R+; b)3.axb8Q) ; >c)2...Qf8+ 3.Kxf8; d)2...Qg8+ 3.Kxg8; e)2...Qh8+ 3.Kxh8; 3.Rxf4+] 2.axb8Q >threatening Qd6+(#2) 2...Qc2 [2...Qe4 3.Qxf4 (3.Rxf4) ; >2...Qxb2 3.Qxb3] 3.Qd6+ [3.Qxf4+; >3.Rxf4+] > >...Another surprising task achievement by this little monsters. Chest solves this problem (basically) instantly. Bq1B1K2/3PpN2/P3Pp2/P1p2P2/2Pk1b1R/1p6/pN1P1P2/QR6 w - - acn 13660; acs 0; bm a7; ce 32760; dm 4; pv a7 Qxd8+ Kg7 Qf8+ Kxf8 axb1=Q d8=Q#;
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.