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		daj95376
 
 
  Joined: 23 Aug 2008 Posts: 3854
 
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				 Posted: Fri May 13, 2011 9:14 pm    Post subject: Puzzle 11/05/13: ~ XY | 
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				 	  | Code: | 	 		   +-----------------------+
 
 | . 4 9 | 8 . . | 6 7 . |
 
 | 7 . . | . 6 4 | . . . |
 
 | 3 . 8 | . . . | 4 . 2 |
 
 |-------+-------+-------|
 
 | 6 . . | 7 . . | . . . |
 
 | . 9 . | . 4 . | . . . |
 
 | . 5 . | . . 6 | 8 9 . |
 
 |-------+-------+-------|
 
 | 5 . 4 | . . 9 | 2 . 6 |
 
 | 2 . . | . . 7 | . . . |
 
 | . . 6 | . . . | 7 . . |
 
 +-----------------------+
 
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Play this puzzle online at the Daily Sudoku site | 
			 
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		peterj
 
 
  Joined: 26 Mar 2010 Posts: 974 Location: London, UK
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				 Posted: Sat May 14, 2011 7:57 am    Post subject:  | 
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				A w-wing-like chain with als...
 
 	  | Quote: | 	 		  | ant(389=1)r2c789 - r3c8=r3c6  - r5c6=r6c5 - (1=3)r6c9 ; r1c9<>3 | 	 
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		daj95376
 
 
  Joined: 23 Aug 2008 Posts: 3854
 
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				 Posted: Sat May 14, 2011 2:31 pm    Post subject:  | 
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				| Interesting find Peter ! | 
			 
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		tlanglet
 
 
  Joined: 17 Oct 2007 Posts: 2468 Location: Northern California Foothills
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				 Posted: Sun May 15, 2011 2:38 pm    Post subject:  | 
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				I could not resist looking at all the (13)s; it was impossible since that was by far the majority of the bivalue cells.
 
 
Flightless w-wing (13) r6c9|r7c4 with grouped strong link(1)r6789c5; r7c4=3
 
Transport: (3)r6c9-r12c9=r2c78-r2c4=(3)r7c4
 
 
Ted | 
			 
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		tlanglet
 
 
  Joined: 17 Oct 2007 Posts: 2468 Location: Northern California Foothills
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				 Posted: Sun May 15, 2011 2:48 pm    Post subject:  | 
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				 	  | peterj wrote: | 	 		  A w-wing-like chain with als...
 
 	  | Quote: | 	 		  | ant(389=1)r2c789 - r3c8=r3c6  - r5c6=r6c5 - (1=3)r6c9 ; r1c9<>3 | 	 
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Very nice find Peter    
 
 
I studying your solution, I realized that an ant(189=3) perspective also works.
 
 
Ted | 
			 
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		Marty R.
 
 
  Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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				 Posted: Sun May 15, 2011 9:53 pm    Post subject:  | 
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				| I used a flightless XY-Wing (351) and X-Wing (3). | 
			 
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