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At Least Three Difference (Posted on 2010-08-04) Difficulty: 3 of 5
Place the numbers 1-9 in the boxes so that the difference of each pair of numbers joined by a line is at least three. The number 8 has already been placed.



No Solution Yet Submitted by Brian Smith    
Rating: 5.0000 (1 votes)

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Solution(s) | Comment 1 of 13

Rows from the top: 8-3-7  2-6-9  5-1-4

The two boxes in the center could be either 6,9 or 9,6; else these are the only solutions.

  

 


  Posted by ed bottemiller on 2010-08-04 13:33:44
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