Author: Roy Eassa
Date: 14:53:01 04/02/02
Go up one level in this thread
On April 02, 2002 at 16:37:41, José Antônio Fabiano Mendes wrote: > [D]8/p6R/k1K5/b4R2/8/7n/1P6/6n1 w > Source ==> http://www.chathurangam.com/problemcorner/article16.asp > > "In Rundlauf a piece has to describe a closed figure. In other words, the >piece which commences the de tour must complete by arriving at the starting >square. The five-mover below is an impressive example of a rectangular Rundlauf >which can be shown only in a problem of such length. There is white strategy in >forcing the bishop moves. The two white rooks are sacrificed en route and the >little white pawn has the last laugh. >Dr E Zepler, Schwalbe 1937 >White:Kc6 Rf5 Rh7 Pb2 Black: Ka6 Ba5 Ng1 Nh3 Pa7 >White to mate in five moves >Solution: 1.R(h)h5, Be1 2.Rh4!, Bxh4 3.b4, Bd8 4.Ra5+!, Bxa5 5.b5 mate." 1.Rhh5! threatening Rxa5# 1...Be1 [1...Bb4 2.Rf1 threatening Ra1+(#2) (2.Rh6 threatening Kc7+(#2) 2...Bd2 a)2...Bc5 3.Rxc5 threatening Kc7# (a)3.Kxc5+ Ka5 (a)3...Kb7 4.Rf7+) 4.Kc4+; 3...Nf4 4.b4 (a)4.Kc7+) ; b)2...Nf4 3.Kc7+ Ne6+ (b)3...Ng6 4.Rxg6+) 4.Rxe6+; 3.b4 threatening Ra5# 3...Bxb4 4.Kc7+; 2...Ba5 3.Ra1 threatening Raxa5# (3.b4 threatening b5# 3...Bxb4 4.Ra1+) 3...Ng5 4.b4 (4.Rxg5) ; 1...Ng5 2.Rhxg5 threatening Rxa5# 2...Bb4 a)2...Be1 3.Kc7 threatening Rf6# a1)3.Rf4 threatening Ra4+(#2) 3...Bd2 a11)3...Bc3 4.bxc3 (a11)4.Ra4+) ; a12)3...Bb4 4.Rxb4; 4.Ra4+; a2)3.Rg4 threatening Ra4+(#2) 3...Bd2 a21)3...Bc3 4.bxc3 (a21)4.Ra4+) ; a22)3...Bb4 4.Rxb4; 4.Ra4+; 3...Bg3+ a1)3...Bc3 4.bxc3 (a1)4.Rg6+) ; a2)3...Bb4 4.Rf6+ (a2)4.Rg6+) ; 4.Rxg3; b)2...Bb6 3.b4 threatening Ra5+(#2) b1)3.Rf4 threatening Ra4+(#2) 3...Ba5 b11)3...Bd4 4.Rxd4; b12)3...Bc7 4.Kxc7 (b12)4.Ra4+) ; 4.Ra4; b2)3.Rf1 threatening Ra1+(#2) 3...Ba5 (b2)3...Bc7 4.Kxc7 (b2)4.Ra1+) ; 4.Ra1; b3)3.Rg4 threatening Ra4+(#2) 3...Ba5 b31)3...Bd4 4.Rxd4; b32)3...Bc7 4.Kxc7 (b32)4.Ra4+) ; 4.Ra4; 3...Bc5 b1)3...Bc7 4.Kxc7 (b1)4.Ra5+) ; b2)3...Bd8 4.Ra5+; 4.Rxc5; 3.Rf1 threatening Ra1+(#2) 3...Ba3 a)3...Bc3 4.bxc3 (a)4.Ra1+) ; b)3...Be1 4.Rxe1; 4.Ra1] 2.Rh4! threatening Ra4+(#2) [or 2.Rh6 threatening Kc7# 2...Bf2 3.b4 threatening Ra5# 3...Bc5 (3...Bb6 4.Ra5+) 4.Rxc5] 2...Bxh4 [2...Nf4 3.Rhxf4 threatening Ra4+(#2) 3...Bd2 a)3...Bc3 4.bxc3 (a)4.Ra4+) ; b)3...Bb4 4.Rxb4; 4.Ra4+] 3.b4 threatening Ra5# 3...Bd8 4.Ra5+! Bxa5 5.b5#
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.