| Author | 
	Message | 
   
  
	   Topic: Need help understanding drawer's tip | 
   
  
	squirrel 
	   
	  Replies: 4 
	  Views: 53620 
	 | 
	 Forum: Other puzzles   Posted: Wed Aug 24, 2005 9:32 pm   Subject: Need help understanding drawer's tip | 
   
  
	Note to self: Next time, type faster.   | 
   
  
	   Topic: Need help understanding drawer's tip | 
   
  
	squirrel 
	   
	  Replies: 4 
	  Views: 53620 
	 | 
	 Forum: Other puzzles   Posted: Wed Aug 24, 2005 9:31 pm   Subject: Need help understanding drawer's tip | 
   
  
	There are hidden pairs {2,5} at r5c7 and r5c9. That means a 4 must appear in either r5c1 or r5c3 and thus cannot appear in r4c2 or r6c2.
  Also, since there's already a 4 in both r8 and c5, there must  ... | 
   
  
	   Topic: unsolved sudoku in our local newspaper | 
   
  
	squirrel 
	   
	  Replies: 20 
	  Views: 510831 
	 | 
	 Forum: Daily Sudoku puzzles   Posted: Wed Aug 24, 2005 9:03 pm   Subject: unsolved sudoku in our local newspaper | 
   
  
	There are also hidden pairs {4,5} in r3c2 and r3c3.
  After finding these I went looking for forced chains of 1, 2, etc. Fortunately I never got to "etc" because 2 had only one possible solution. After ... | 
   
  
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