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Pawn
 
Joined: Mon Sep 03, 2007 5:25 pm
Posts: 6
 Post subject: Mate in two?
PostPosted: Sun Jan 08, 2012 11:41 am 
This is one of the "mate in two" puzzles on my cell phone. I've looked at this puzzle for hours :shock: , but do not see a way for white to mate in two moves.

Image

Someone please tell me what I am missing.

Thank you.

PS. To give credit where it is due, I used Fritz 5.32 to create and print the setup.


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Pawn
 
Joined: Sat Nov 20, 2004 8:23 am
Posts: 15
 Post subject: Re: Mate in two?
PostPosted: Sun Jan 08, 2012 1:19 pm 
Stockfish analysis:

100 M3 1.Qe6 Kd3 2.Rd1+ Kc2 3.Qa2#

So, it's a mate in three, not in two.


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Rook
 
Joined: Wed Nov 22, 2006 3:00 am
Posts: 81
 Post subject: Re: Mate in two?
PostPosted: Sun Jan 08, 2012 5:49 pm 
1. Qe6 Kd3
2. 0-0-0 #

Bill


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Pawn
 
Joined: Sat Nov 20, 2004 8:23 am
Posts: 15
 Post subject: Re: Mate in two?
PostPosted: Sun Jan 08, 2012 6:06 pm 
billwv wrote:
1. Qe6 Kd3
2. 0-0-0 #

Bill


Damn,you're right, Stockfish of course could not know, and it didn't occur to me, that castling is still possible... :oops:


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Pawn
 
Joined: Mon Sep 03, 2007 5:25 pm
Posts: 6
 Post subject: Re: Mate in two?
PostPosted: Sun Jan 08, 2012 9:02 pm 
I'm glad I asked. That's devilish. Castling never occurred to me.

Thanks, Bill.


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Site Admin
 
Joined: Thu Sep 04, 2003 12:42 am
Posts: 1430
Location: Utrecht, The Netherlands
 Post subject: Re: Mate in two?
PostPosted: Mon Jan 09, 2012 12:58 pm 
billwv wrote:
1. Qe6 Kd3
2. 0-0-0 #

Bill


That's clever! When setting up the position in Fritz I specifically unchecked the white castling opportunity..... Too bad it's impossible to add a "white still allowed to castle" instruction because that would give it away. Nice one.


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Pawn
 
Joined: Tue Jul 08, 2014 7:16 pm
Posts: 10
 Post subject: Re: Mate in two?
PostPosted: Tue Jul 08, 2014 7:56 pm 
marshach wrote:
This is one of the "mate in two" puzzles on my cell phone. I've looked at this puzzle for hours :shock: , but do not see a way for white to mate in two moves.

Image

Someone please tell me what I am missing.

Thank you.

PS. To give credit where it is due, I used Fritz 5.32 to create and print the setup.


Can White castle long?

http://enjoychesslearning.wordpress.com/


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King
 
Joined: Sat Aug 13, 2005 3:13 pm
Posts: 304
Location: Finland
 Post subject: Re: Mate in two?
PostPosted: Thu Jul 17, 2014 9:43 am 
enjoychess wrote:


As there is no way to prove that Ra1 or Ke1 has moved before this position, then ,yes, white can castle.


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