squares1

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a  8.. | 75. | ..3        World Championship in March 2006 from NYT 060501                   
b  .3. | .48 | .2.           31:29.460 060510                                                
c  1.. | ... | ..6        Sig  333334569 014445777 244445556                                 
   ----+-----+----        Iteration counts       1  0  0                                     
d  34. | .7. | ..8    <-- Blank cell count      42                                           
e  79. | 48. | .31        Nonblank cell count  124                                           
f  2.8 | ... | .74          |                                                                
   ----+-----+----          |                                                                
g  5.. | 814 | ..7          V                                                                
h  .8. | 327 | .4.  
i  4.. | 569 | ..2

  Look at the 9's in columns 1 and 9.
  
       1         2         3          4         5         6          7         8         9       
  .---------.---------.---------..---------.---------.---------..---------.---------.---------.  
a |         | 2   6   | 2 4 6  9||         |         |12   6   ||1  4    9|1       9|         | a
b |     6  9|         |    567 9||1    6  9|         |         ||1   5 7 9|         |    5   9| b
c |         | 2  5 7  | 2 45 7 9|| 2      9|  3     9| 23      ||   45 789|    5  89|         | c
  |---------+---------+---------++---------+---------+---------++---------+---------+---------|  
d |         |         |1   56   ||12   6  9|         |12  56   || 2  56  9|    56  9|         | d
e |         |         |    56   ||         |         | 2  56   || 2  56   |         |         | e
f |         |1   56   |         ||1    6  9|  3     9|1 3 56   ||    56  9|         |         | f
  |---------+---------+---------++---------+---------+---------++---------+---------+---------|  
g |         | 2   6   | 23  6  9||         |         |         ||  3  6  9|     6  9|         | g
h |     6  9|         |1    6  9||         |         |         ||1   56  9|         |    5   9| h
i |         |1     7  |1 3   7  ||         |         |         ||1 3    8 |1      8 |         | i
  '---------'---------'---------''---------'---------'---------''---------'---------'---------'  
       1         2         3          4         5         6          7         8         9