Wednesday, February 05, 2014

Amazing checkmate in 2!



By Lubomir Kavalek
Special to The Washington Post
Monday, April 20, 2009

Walther von Holzhausen (1876-1935), a German chess composer and player, wrote extensively on the theory of chess problems. In one of his compositions, white mates in two moves.

Can you find the solution?

37 comments:

Anonymous said...

nice, R-a8

Jairo said...

Ra8!

Anonymous said...

Ra1! Very nice!

KADAVER2008 said...

Ra8!

KADAVER2008 said...

Ra8!

Carlos Eduardo Moreira Costa said...

I thought about 40 second and saw where king would scape. Yes, amazing.

1.Ra8!!

A) 1...Rxa8
2.Qf3++
B) 1...Kc6
2.Qb5++
C) 1...move bishop for anywhere
2.Qa6++

Anonymous said...

probly ra8

Yancey Ward said...

I got this one in less than five seconds though it took me just a bit longer to be certain of all the variations. It was very easy to see that every king move was mate with either 2.Qf3 if black plays Kxa8, and 2.Qb5 if black plays either Kb6 or Kc6. Finally, if black moves the bishop anywhere other than b6, white mates with Qa6- if black plays Bb6, white mates with Qf3 again.

Oleg Mezjuev said...

1. Ra8!

a. 1. ... Bb6 (c5, d4, e3, f2, g1 or b8) 2. Qa6#

b. 1. ... Kxa8 2. Qf3#

c. 1. ... Kc6 2. Qb5#

Anonymous said...

Ra8!

Anonymous said...

Ra8

Anonymous said...

Ra8

Anonymous said...

Ra8,

Raghubar Tyagi said...

1.Ra8 if 1.-- KxR 2. Qf3#; if 1-- Kc6 2.Qb5# ; if 1. --- B~~ 2. Qa6#. However the problem is heavily made up and even a child can mate black given more moves. I prefer the problem posted by Judith which is more elegant.

José Moreno said...

Ta8

Anonymous said...

1Ra8 mate next move

clogic said...

Qb5+

clogic said...

Qb5+

SRB said...

Ra8 should seal the fate right?

SRB said...

Ra8 should seal the fate right?

Anand Gautam said...

I must admit I got lucky :)

1. Ra8!!
(threatening Qa6+#)

If Black tries to prevent Qa6+# threat, it gets mated by other means.
1. ... Bb6 2. Qf3+#
1. ... Kb6/c6 2.Qb5+#
1. ... Kxa8 Qf3+#

Tharder said...

ra8!!!!!!

Anonymous said...

Took me 1 minute, this one. I noticed the a-file problems to solve this if the B moves.
So, i would place my rook on a white square... ;-)

From the patzer said...

1. Ra8 Kxa8 2. Qf3#
If 1.... Kg6 or 1. Kf6 then 2. Qg5#
If 1.... Bmove 2. Ka6#

From the patzer said...

And if 1. Ra8 Bb6 2. Qf3#

bretislav said...

1.Ra8 !

Cortex said...

Easy!

White can mate after any black move except if the black bishop moves. So, let's try to have mates after any bishop move.

Here's the solution with some chess problem terminology.

1.Ra8! This is called an "ampliative key". Black has more moves after White's move, but nevertheless, this is the only first move (or "key") than before it.

Furthermore, White hasn't any threat to mate in one, but after any Black's move. There is mate. This is called, in problem terminology, a zugzwang. Black is forced to move, and all moves deteriorate his position.

Let's get into details:

1.Ra8! and zugzwang.
1...Kxa8 2.Qf3#
1...Kb6 2.Qc5#
1...Kc6 2.Qc5# (instructive mate pattern to store!)

1...B any 2.Qa6# (2.Qf3+? Kb6)
1...Bb6! (this is called a "correction") 2.Qa6+ doesn't work anymore, but 2.Qf3# x-ray checks and mates

Anonymous said...

Ra8

Anonymous said...

Ta8... no exit, i think

fajac said...

Amazing indeed!
1. Ra8! Zugzwang.
1. ... Kxa8 2. Qf3#
1. ... Kb6 2. Qb5#
1. ... Kc6 2. Qb5#
1. ... Bb6 2. Qf3#
2. ... Bb8/c5/d4/e3/f2/g1 2. Qa6#

Ian Consterdine said...

Ra8

if Kxa8, Qf3#
if Kc6, Qb5#
&c.

Anonymous said...

1. Ra8!!!
A 1....Kxa8 2. Qf3#
B 1....Kb/c6 2. Qb5#
C 1....Bb6...2. Qf3#
D 1..B-other 2. Qa6#

Harry

Jorge Moraes said...

Ra8!!! Win with Q(f3(Ka8 or Bb6), b5 and a6 (Bb8 or Bc5 etc)

Anonymous said...

Ra8..Qf3# Ra8..Qa6#

Anonymous said...

Ra8..Qf3#
Ra8..Qa6#

Anonymous said...

Ra8..Qf3#
Ra8..Qa6#

me said...

Ra8!